Pressing device and friction stir additive manufacturing equipment and method

Abstract

The invention relates to the technical field of solid phase additive materials, and particularly provides a material pressing device and friction stir additive manufacturing equipment and method.The material pressing device comprises a first base and a material pressing part, the material pressing part is arranged on the first base, and the working states of the material pressing part comprise the first state and the second state; when the material pressing piece is in the first state, the material pressing piece can stretch into a target channel, and the target channel is used for containing a bar; and when the material pressing piece is in the second state, the material pressing piece can rotate and avoid relative to the first seat body, so that the bar material enters the target channel. According to the material pressing device and the friction stir additive manufacturing equipment and method, the space utilization rate of the device is high, and the additive quality is high.

Description

Technical Field

[0001] The present invention relates to the field of solid-phase additive manufacturing, and in particular to a material pressing device, a friction stir additive manufacturing device and a method. Background Art

[0002] Friction stir additive manufacturing generates friction heat with the stacked thin plates through the rotation and movement of the stirring head, causing the materials to undergo plastic deformation and fuse together. It has the advantages of high manufacturing efficiency and excellent performance, and is suitable for additive manufacturing of larger volume components. Compared with traditional manufacturing technology, the friction stir additive manufacturing process has less heat input and a narrower heat-affected zone. In addition, ultrafine grains can be obtained based on the friction stir dynamic recrystallization process, which effectively reduces the defects in traditional manufacturing technology. Therefore, the friction stir additive manufacturing process has become one of the hot research in additive manufacturing.

[0003] Rod stock is one of the commonly used materials for friction stir additive manufacturing. When using rod stock for friction stir additive manufacturing, the rod stock is usually fed into the channel of the stirring spindle so that it rotates at the same speed as the stirring spindle. At the same time, the rod stock in the channel is pushed by the press piece to provide a forging force for the rod stock. The front end of the spindle is partially cooled, so that the front end of the rod stock is frictionally coated and formed. When a rod stock is completely used, or the press piece reaches the limit position of the press piece, the press piece is retracted. When dealing with rod stock with a rectangular structure, it is necessary to manually place the square rod stock into the channel of the spindle and align the spindle phase, and then the press piece is pressed down to start welding.

[0004] In order to facilitate the loading of materials by the staff, the existing material pressing parts need to move a large distance to avoid the material. This results in a relatively loose structure and low space utilization. In addition, the time required for the material pressing parts to avoid and reset is long, which increases the waiting time of the equipment, easily leading to cooling defects in the additive body and affecting the quality of the additive. Summary of the invention

[0005] The pressing device, stir friction additive manufacturing equipment and method provided by the embodiments of the present invention at least solve the problem that the existing pressing device has low space utilization and easily affects the quality of the additive body. It has high space utilization and high additive quality.

[0006] In the first aspect, the present invention provides a pressing device, comprising a first seat body; and a pressing piece, wherein the pressing piece is arranged on the first seat body, and the working state of the pressing piece comprises a first state and a second state, and when the pressing piece is in the first state, the pressing piece can extend into a target channel, and the target channel is used to accommodate rod material; when the pressing piece is in the second state, the pressing piece can rotate relative to the first seat body to avoid the rod material, so that the rod material enters the target channel.

[0007] In one embodiment of the present invention, an open cavity is provided on the first seat body, and an axis body is provided in the open cavity; the pressing piece is at least partially provided in the open cavity, and a strip hole is provided on the pressing piece, and the axis body is movably provided in the strip hole; wherein, when the axis body is at one end of the strip hole, the cavity wall of the open cavity abuts against the pressing piece to prevent the pressing piece from rotating around the axis body, and the pressing piece enters the first state; when the axis body is at the other end of the strip hole, the pressing piece enters the second state.

[0008] In one embodiment of the present invention, a limiting portion is disposed on the first seat body, and the limiting portion is used to limit the rotation angle of the pressing member when it is in the second state.

[0009] In one embodiment of the present invention, it also includes a second seat body, which is sleeved on the first seat body, and the first seat body is rotatable relative to the second seat body; the second seat body is configured to be movable along a first direction to drive the pressing piece to extend into or exit the target channel.

[0010] In one embodiment of the present invention, it also includes a locking piece, which is arranged on the second seat body, and the locking piece includes a locking driving piece and a locking component, the driving end of the locking driving piece is connected to the locking component, and the locking driving piece is used to drive the locking component to move along the first direction, and a locking portion corresponding to the locking portion is arranged on the first seat body; wherein, when the pressing piece extends into the target channel, the locking piece is separated from the locking portion; when the pressing piece withdraws from the target channel, the locking piece is engaged with the locking portion.

[0011] In one embodiment of the present invention, the material pressing member includes a push rod, and the push rod is clearance-matched with the target channel; along an axial direction perpendicular to the push rod, the cross-sectional shapes of the push rod and the target channel are both set to be polygonal.

[0012] In the second aspect, the present invention also provides a friction stir additive manufacturing device, comprising a pressing device as described in any one of the above items, the pressing device being configured to be movable along a first direction; and a loading device, the loading device being used to set a rod material, the loading device being arranged on one side of the pressing device, and the loading device being movable relative to the pressing device; wherein, when the loading device moves to above a target channel, the loading device pushes the pressing piece, and the pressing piece rotates relative to the first seat to avoid the rod material, so that the rod material enters the target channel.

[0013] In one embodiment of the present invention, the loading device includes a material box, which is configured to be movable along a second direction, and a accommodating space is arranged in the material box, and the accommodating space is used to arrange the rod material, and the axial direction of the rod material is parallel to the first direction. When multiple rod materials are provided, the multiple rod materials are arranged in sequence along the second direction; a pushing member, which is arranged on the material box, and the pushing member includes a pushing driving member and a pushing component, and the driving end of the pushing driving member is connected to the pushing component, and the pushing driving member is used to drive the pushing component to move along the second direction so that the pushing component drives the rod material to move to the discharge port of the material box; and a discharging member, which is arranged on the material box, and the discharging member includes a discharging driving member and a discharging component, and the driving end of the discharging driving member is connected to the discharging component, and the discharging driving member is used to drive the discharging component to move to open or close the discharge port.

[0014] In one embodiment of the present invention, the feeding device includes a material tightening member, which is arranged on the material box, and the material tightening member includes a material tightening driving member and a material tightening component, the driving end of the material tightening driving member is connected to the material tightening component, and the material tightening component is used to drive the material tightening component to move along a third direction to loosen or compress and position the rod material; and a material blocking member, which is arranged on the material box, and the material blocking member and the material pushing member are respectively arranged on both sides of the rod material along the second direction; the material blocking member includes a material blocking driving member and a material blocking component, the driving end of the material blocking driving member is connected to the material blocking component, and the material blocking driving member is used to drive the material blocking component to move to loosen or block and position the rod material.

[0015] In one embodiment of the present invention, a stirring device is further included, wherein a guide member and the target channel are disposed on the stirring device, the guide member is disposed around the channel opening of the target channel, and a guide slope is disposed on the guide member.

[0016] In a third aspect, the present invention further provides a friction stir additive manufacturing method, comprising the following steps:

[0017] The bar material is transported to the top of the target channel by the loading device; the loading device pushes the pressing piece of the pressing device, and the pressing piece rotates relative to the first seat of the pressing device to avoid the bar material, so that the bar material enters the target channel;

[0018] The feeding device moves away from the pressing device, and the pressing member rotates relative to the first seat and resets;

[0019] The material pressing device provides an upsetting force to the bar material in the target channel to perform friction stir material addition.

[0020] The above technical solution of the present invention has the following beneficial effects compared with the prior art:

[0021] The press device, the friction stir additive manufacturing equipment and the method described in the present invention, the press device includes a first seat body and a press piece, and the press piece can rotate relative to the first seat body. When the rod material in the target channel is exhausted, or the press piece reaches the press limit position, the press piece can be rotated relative to the first seat body to free up a certain space to avoid the rod material, so that the rod material can enter the target channel. On the one hand, the space required for the rotation of the press piece is small, compared with the displacement avoidance structure, it can effectively improve the space utilization rate of the device and make the structure of each component more compact. On the other hand, the time required for the rotation avoidance and reset action is relatively short, which can effectively reduce the waiting time required for the stirring device during loading, reduce the probability of cooling defects in the additive body, and ensure high additive quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0023] Figure 1 It is one of the partial structural schematic diagrams of the material pressing device in the preferred embodiment of the present invention.

[0024] Figure 2 This is the second schematic diagram of the partial structure of the material pressing device in the preferred embodiment of the present invention.

[0025] Figure 3 It is one of the partial cross-sectional structural schematic diagrams of the pressing device in the preferred embodiment of the present invention.

[0026] Figure 4 This is the second schematic diagram of the partial cross-sectional structure of the material pressing device in the preferred embodiment of the present invention.

[0027] Figure 5 It is a schematic structural diagram of a material pressing device in a preferred embodiment of the present invention.

[0028] Figure 6 It is one of the structural schematic diagrams of the friction stir additive manufacturing equipment in the preferred embodiment of the present invention.

[0029] Figure 7 This is the second structural schematic diagram of the friction stir additive manufacturing equipment in the preferred embodiment of the present invention.

[0030] Figure 8 This is the third structural schematic diagram of the friction stir additive manufacturing equipment in the preferred embodiment of the present invention.

[0031] Fig. 9 It is a schematic diagram of the structure of the material box in the preferred embodiment of the present invention.

[0032] Fig.10 It is a schematic cross-sectional structural diagram of a material box in a preferred embodiment of the present invention.

[0033] Fig.11 It is a schematic diagram of the cross-sectional structure of the spindle cover body in the preferred embodiment of the present invention.

[0034] The above drawings include the following reference numerals:

[0035] D1, first direction; D2, second direction; D3, third direction; 10, first seat; 11, opening cavity; 12, shaft; 13, limiting inclined plane; 14, limiting member; 15, locking part; 20, pressing member; 21, ejector; 22, pressing seat; 221, strip hole; 30, second seat; 312, locking member; 40, bar material; 51, material box; 511, accommodating space; 5111, discharge port; 5112 , feed port; 5113, limit groove; 5121, push seat; 5122, push screw; 52, push member; 521, push drive member; 522, push member; 532, discharge member; 54, tightening member; 541, tightening drive member; 542, tightening member; 552, blocking member; 56, box drive member; 61, spindle cover; 611, target channel; 612, guide member; 6121, guide slope. DETAILED DESCRIPTION

[0036] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0037] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0038] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0039] Reference Figure 1 and Figure 2 As shown, the present invention provides a material pressing device, including a first seat body 10 and a material pressing piece 20.

[0040] The first seat body 10 is used to install the pressing piece 20 and realize the connection with other components. Those skilled in the art can set its shape and structure according to actual needs; preferably, the first seat body 10 is set as an axial structure.

[0041] The binder 20 is used to provide a forging force for the bar 40 to cooperate with the stirring head to realize friction stir additive manufacturing. The binder 20 is arranged on the first base body 10, and the binder 20 is rotatably connected to the first base body 10. Those skilled in the art can set a specific rotation connection method according to actual needs, such as hinged connection, etc.

[0042] The working state of the pressing piece 20 includes a first state and a second state. When the pressing piece 20 is in the first state, the pressing piece 20 can extend into the target channel 611. The target channel 611 is arranged on the stirring device, which is used to accommodate the bar stock 40. The stirring device belongs to the prior art, which includes a stirring spindle, on which the target channel 611 and a stirring head are arranged. When performing stir friction additive manufacturing, the pressing piece 20 extends into the target channel 611, contacts and pushes the bar stock 40, and provides a forging force for the bar stock 40 to cooperate with the stirring head for additive manufacturing.

[0043] When the pressing piece 20 is in the second state, the pressing piece 20 can rotate and avoid relative to the first seat body 10. Those skilled in the art can set the pressing piece 20 according to actual needs, so that the pressing piece 20 can actively realize rotation and avoidance, or passively realize rotation and avoidance.

[0044] Exemplarily, when the previous bar 40 is exhausted or the pressing piece 20 reaches the pressing limit position, the stirring device stops rotating and the pressing piece 20 is withdrawn from the target channel 611. Then, the pressing piece 20 only needs to enter the second state and rotate relative to the first seat 10 to make a certain space to avoid the bar 40 and facilitate the bar 40 to enter the target channel 611. After the loading is completed, the pressing piece 20 is rotated and reset to enter the first state, and then the pressing piece 20 is extended into the target channel 611 to abut the bar 40. Then, the friction stir additive can continue.

[0045] The pressing device of the present invention comprises a first seat body 10 and a pressing piece 20, and the pressing piece 20 can rotate relative to the first seat body 10. When the rod 40 in the target channel 611 is exhausted, or the pressing piece 20 reaches the pressing limit position, the pressing piece 20 can be rotated relative to the first seat body 10 to free up a certain space to avoid the rod 40, so that the rod 40 can enter the target channel 611. On the one hand, the space required for the rotation of the pressing piece 20 is small, which can effectively improve the space utilization rate of the device compared to the displacement avoidance structure, making the structure of each component more compact. On the other hand, the time required for the rotation avoidance and reset action is relatively short, which can effectively reduce the waiting time required for the stirring device during loading, reduce the probability of cooling defects in the additive body, and ensure high additive quality.

[0046] Reference Figure 3 and Figure 4 As shown, in some embodiments of the pressing device of the present invention, an open cavity 11 is provided on the first seat body 10, and an axle body 12 is provided in the open cavity 11. The pressing piece 20 is at least partially arranged in the open cavity 11. Preferably, the pressing piece 20 includes a pressing seat 22 and a push rod 21 that are detachably connected. When the pressing piece 20 is assembled with the first seat body 10, a part of the pressing seat 22 extends into the open cavity 11, and the push rod 21 is arranged at one end of the pressing seat 22 away from the first seat body 10, so as to press the material and provide a top forging force for the bar 40. By setting a split structure, production, processing and maintenance are facilitated. Preferably, the pressing seat 22 is provided with a flange structure to facilitate abutment against the first seat body 10 and achieve positioning.

[0047] The pressing seat 22 is provided with a strip hole 221, and the shaft body 12 is movably arranged in the strip hole 221. Exemplarily, the pressing seat 22 can rotate around the shaft body 12, and the pressing seat 22 can move relative to the shaft body 12 so that the shaft body 12 slides between the two ends of the strip hole 221.

[0048] When the shaft body 12 is at one end of the strip hole 221, the cavity wall of the open cavity 11 abuts against the pressing seat 22 to prevent the pressing piece 20 from rotating around the shaft body 12, and the pressing piece 20 enters the first state. Preferably, the portion of the pressing seat 22 extending into the open cavity 11 and the open cavity 11 are both configured as a square structure, which can effectively prevent rotation and not affect the sliding of the shaft body 12 along the strip hole 221. Preferably, when the pressing piece 20 is in the first state, the shaft body 12 does not contact the hole wall of the strip hole 221.

[0049] When the shaft body 12 is at the other end of the strip hole 221, the pressing piece 20 enters the second state. At this time, the pressing piece 20 can rotate relatively around the shaft body 12 to achieve the action of avoiding the bar 40 or the reset action. By setting this structure, the limiting, rotation avoidance and reset actions of the pressing piece 20 relative to the first seat body 10 can be well achieved, the structure is simple, reliable, and the space utilization rate is high.

[0050] Reference Figure 3 and Figure 4 As shown, in some embodiments of the material pressing device of the present invention, a limiting portion is provided on the first seat body 10. The limiting portion is used to limit the rotation angle of the material pressing member 20 when it is in the second state, so as to achieve accurate positioning of the ejector rod 21.

[0051] Preferably, the limiting portion includes a limiting slope 13, and the limiting slope 13 is arranged at the opening of the opening cavity 11. By setting the limiting slope 13, when the pressing piece 20 rotates to avoid, the pressing seat 22 will abut the limiting slope 13, thereby limiting the maximum rotation avoidance angle of the pressing piece 20. Preferably, a limiting member 14 is also provided on the first seat body 10, and the limiting member 14 and the limiting slope 13 are respectively arranged on both sides of the shaft body 12. By setting the limiting member 14, when the pressing piece 20 rotates to reset, the pressing seat 22 will abut the limiting member 14, thereby preventing the pressing piece 20 from rotating to the other side when resetting, so as to accurately position, quickly switch states, and improve work efficiency.

[0052] Reference Figure 5 As shown, the material pressing device of the present invention, in some embodiments, further includes a second seat body 30. The second seat body 30 is sleeved on the first seat body 10, and the first seat body 10 is rotatable relative to the second seat body 30. Those skilled in the art can set a specific rotating connection structure according to actual needs. For example, the two are rotatably connected by setting components such as bearings and keys.

[0053] The second seat body 30 is configured to be movable along the first direction D1 to drive the pressing piece 20 to extend into or exit the target channel 611. Preferably, the second seat body 30 is connected to a driving member such as a cylinder. Taking the cylinder as an example, during operation, the cylinder drives the second seat body 30 to move along the first direction D1, thereby driving the first seat body 10 connected to the second seat body 30 and the pressing piece 20 connected to the first seat body 10 to move together, extending into or exiting the target channel 611. When the ejector rod 21 extends into the target channel 611 for stir friction additive manufacturing, and the ejector rod 21 is required to rotate synchronously, the first seat body 10 can also rotate relative to the second seat body 30 so that the ejector rod 21 rotates synchronously.

[0054] Further, see Figure 5 As shown, the material pressing device of the present invention, in some embodiments, further includes a locking member. By providing the locking member, when using a bar material 40 such as a square bar material 40 that requires the ejector rod 21 to rotate synchronously with the stirring device for additive manufacturing, it can be ensured that after the ejector rod 21 and the target channel 611 are separated, the phases of the two are accurate and the ejector rod 21 can smoothly enter the target channel 611.

[0055] Specifically, the locking member is arranged on the second seat body 30, and the locking member includes a locking driving member and a locking component 312. Exemplarily, the locking driving member is arranged as a cylinder; the locking driving member is not shown in the figure. The driving end of the locking driving member is connected to the locking component 312, and the locking driving member is used to drive the locking component 312 to move along the first direction D1. The first seat body 10 is provided with a locking portion 15 corresponding to the locking component 312.

[0056] When the pressing piece 20 extends into the target channel 611, the locking component 312 is separated from the locking portion 15. At this time, the first seat body 10 can rotate relative to the second seat body 30, meeting the requirement for synchronous rotation of the ejector rod 21 when the square bar 40 is used for material addition.

[0057] When the pressing piece 20 exits the target channel 611, the locking component 312 is engaged with the locking portion 15 to avoid the problem of the first base body 10 rotating relative to the second base body 30 due to external interference, resulting in phase shift, and effectively prevent the push rod 21 from being damaged due to phase difference when moving along the first direction D1 close to the target channel 611. Preferably, the locking portion 15 is configured as a locking groove. Preferably, two locking grooves are provided opposite to each other for easy positioning.

[0058] Reference Figure 1 As shown, in some embodiments of the material pressing device of the present invention, the push rod 21 is clearance-matched with the target channel 611. Along the axial direction perpendicular to the push rod 21, the cross-sectional shapes of the push rod 21 and the target channel 611 are both set to polygonal shapes. Preferably, both are set to square shapes to meet the requirements of friction stir additive for square bar 40.

[0059] When performing friction stir additive manufacturing of the square bar 40, the stirring device rotates, and the wall of the target channel 611 applies a force to the push rod 21, so that the push rod 21 can achieve synchronous rotation while moving along the first direction D1, thereby providing the upsetting force required for additive manufacturing and ensuring a good additive effect.

[0060] Reference Figure 6 , Figure 7 and Figure 8 As shown, the present invention also provides a friction stir additive manufacturing device, including a material pressing device as described in any one of the above embodiments, and a material feeding device. Since the friction stir additive manufacturing device described in the present invention includes the material pressing device described in the above embodiments, the beneficial effects thereof are also possessed by the friction stir additive manufacturing device, which will not be described in detail.

[0061] The feeding device is used to set the bar material 40. The feeding device is arranged on one side of the pressing device and is movable relative to the pressing device. Those skilled in the art can set the way in which the feeding device moves according to actual needs, such as setting a cylinder.

[0062] When the loading device moves to the top of the target channel 611, the loading device pushes the pressing piece 20, and the pressing piece 20 rotates relative to the first base body 10 to avoid, so that the bar 40 enters the target channel 611. After the loading is completed, the loading device moves away from the target channel 611, and the pressing piece 20 loses the force of the loading device and returns to its original position under the action of gravity, so as to carry out the subsequent pressing and friction stirring.

[0063] During friction stir additive manufacturing, a large amount of heat will be generated at the target channel 611. If the staff directly loads the materials, it is easy to cause mechanical damage or high temperature burns to the staff who loads the materials. By setting up this structure, firstly, it is convenient for the staff to safely load the materials away from the target channel 611, which greatly improves the safety of the equipment. Secondly, it saves the space and observation holes required for manual loading, improves the structural strength of the equipment, and ensures high additive accuracy. Finally, semi-continuous solid-state additive can be achieved, effectively improving the additive efficiency. In addition, it is also convenient for the press 20 to perform passive rotation avoidance and resetting to improve space utilization and shorten the time required to perform the corresponding action.

[0064] Preferably, the feeding device is provided with a pushing member to push the ejector rod 21 to rotate and avoid. Preferably, the pushing member is set as a pushing screw 5122. Preferably, the feeding device is also provided with a pushing seat 5121, and the pushing screw 5122 is threadedly connected with the pushing seat 5121 so that the positions of the two can be relatively adjusted to meet different feeding avoidance requirements.

[0065] In the friction stir additive manufacturing equipment described in the present invention, in some embodiments, the loading device includes a material box 51, a material pushing member 52 and a material placing member.

[0066] The material box 51 is used to place the bar material 40. Figure 6 and Figure 7 As shown, the material box 51 is configured to be movable along the second direction D2. Preferably, the first direction D1 and the second direction D2 are perpendicular. Preferably, the material box 51 is connected to the driving end of the box driving member 56, and the material box 51 is driven to reciprocate along the second direction D2 by the box driving member 56. Preferably, the box driving member 56 is configured as a cylinder. Preferably, a guide rail is also provided on the material box 51 to provide guidance for the movement of the material box 51. Preferably, a position sensor is also provided to detect the position of the material box 51 to ensure its movement accuracy. Preferably, an interlocker is also provided, and the interlocker is used to lock the box driving member 56 and the driving member connected to the second seat body 30. When the ejector 21 extends into the target channel 611, the box driving member 56 is locked and cannot approach the target channel 611 to feed; when the material box 51 is feeding, the ejector 21 is locked and cannot approach the target channel 611, which effectively improves the safety and reliability of the equipment.

[0067] Reference Fig. 9 and Fig.10 As shown, a storage space 511 is provided in the material box 51, and the storage space 511 is used to set the bar 40. The storage space 511 is provided with a discharge port 5111 and a feed port 5112, so that the staff can fill the bar 40 from the feed port 5112, and the bar 40 can be discharged from the discharge port 5111 and enter the target channel 611. Preferably, the axial direction of the bar 40 is parallel to the first direction D1. When multiple bars 40 are provided, the multiple bars 40 are arranged in sequence along the second direction D2 to improve space utilization. By setting this structure, the one-time working time of the equipment can be effectively extended.

[0068] The pusher 52 is used to push the bar 40 in the accommodating space 511. Specifically, the pusher 52 is arranged on the material box 51, and the pusher 52 includes a pusher driving member 521 and a pusher component 522. Exemplarily, the pusher driving member is set as a cylinder. The driving end of the pusher driving member 521 is connected to the pusher component 522, and the pusher driving member 521 is used to drive the pusher component 522 to move along the second direction D2, so that the pusher component 522 drives the bar 40 to move to the discharge port 5111 of the material box 51.

[0069] The discharge member is used to open or close the discharge port 5111. Specifically, the discharge member is arranged on the material box 51, and the discharge member includes a discharge drive member and a discharge member 532. Exemplarily, the discharge drive member is arranged as a cylinder; the discharge drive member is not shown in the figure. The driving end of the discharge drive member is connected to the discharge member 532, and the discharge drive member is used to drive the discharge member 532 to move to open or close the discharge port 5111. When the discharge port 5111 is closed, the rod 40 cannot be discharged from the discharge port 5111. At this time, the rod 40 can be driven to move into place by the push member 52; after the material box 51 reaches the loading position, the discharge member opens the discharge port 5111, and the rod 40 is discharged from the discharge port 5111 and enters the target channel 611, and then the corresponding stir friction additive manufacturing can be carried out.

[0070] Preferably, a residual material detector is also provided on the material box 51. The residual material detector belongs to the prior art, and when the bar material 40 in the material box 51 is used up, it sends a signal to remind the staff to refill.

[0071] Further, see Fig. 9 and Fig.10 As shown, in the friction stir additive manufacturing equipment described in the present invention, in some embodiments, the feeding device includes a material tightening member 54 and a material blocking member.

[0072] The material tightening member 54 is used to compress and position the bar stock 40. Specifically, the material tightening member 54 is disposed on the material box 51, and the material tightening member 54 includes a material tightening driving member 541 and a material tightening component 542. Exemplarily, the material tightening driving member 541 is configured as a cylinder. The driving end of the material tightening driving member 541 is connected to the material tightening component 542, and the material tightening component 542 is used to drive the material tightening component 542 to move along the third direction D3 to loosen or compress the positioning bar stock 40. Preferably, the third direction D3 is perpendicular to the first direction D1 and the second direction D2, respectively.

[0073] Exemplarily, when loading, the tightening component 542 is used to press the bars 40 other than the first bar 40 so that these bars 40 are separated from the first bar 40, ensuring that after the first bar 40 is discharged from the discharge port 5111, the remaining bars 40 will not fall over; in other cases, the tightening component 542 is separated from the bars 40 to facilitate the movement of the bars 40.

[0074] Preferably, two limiting grooves 5113 are further provided in the material box 51, and the two limiting grooves 5113 are arranged opposite to each other along the first direction D1, and the axial ends of the bar material 40 are respectively arranged in the corresponding limiting grooves 5113. When the material tightening component 542 is separated from the bar material 40, the bar material 40 can slide along the limiting grooves 5113 under the push of the material pushing member 52; when the material tightening component 542 is in contact with the bar material 40, the bar material 40 is pressed and positioned.

[0075] The material blocking member is used to block the bar material 40 in place and realize positioning so that it can accurately fall into the target channel 611, thereby improving the accuracy of loading. Specifically, the material blocking member is arranged on the material box 51, and the material blocking member and the material pushing member 52 are respectively arranged on both sides of the bar material 40 along the second direction D2. The material blocking member includes a material blocking driving member and a material blocking component 552. Preferably, the material blocking driving member is arranged as a cylinder; the material blocking driving member is not shown in the figure. The driving end of the material blocking driving member is connected to the material blocking component 552, and the material blocking driving member is used to drive the material blocking component 552 to move to loosen or block the positioning bar material 40.

[0076] By setting the material blocking member, when releasing the bar 40, the material blocking member 552 can be separated from the first bar 40, so that the bar 40 can smoothly enter the target channel 611, thereby improving the feeding efficiency; when it is not necessary to release, the material blocking member 552 blocks and positions the first bar 40, thereby cooperating with the material pushing member 52 to achieve the positioning and limiting of the bar 40. Preferably, the material blocking member and the material releasing member are driven synchronously. Preferably, a plurality of material blocking members are provided, and the plurality of material blocking members are sequentially spaced along the first direction D1.

[0077] By integrating the above functional parts on the material box 51, modular installation can be facilitated, the installation and debugging process can be simplified, the position accuracy of the bar material 40 can be well achieved, and the equipment failure rate can be reduced.

[0078] Reference Figure 6 and Fig.11 As shown, the stir friction additive manufacturing device described in the present invention, in some embodiments, further includes a stirring device for stir friction. Preferably, the stirring device includes a spindle cover 61, and the spindle cover 61 is provided with a guide member 612 and a target channel 611. The guide member 612 is arranged around the channel opening of the target channel 611. The guide member 612 is provided with a guide bevel 6121, and the guide bevel 6121 is inclined so that the ejector 21 can easily extend into the target channel 611, thereby improving the working efficiency.

[0079] The present invention also provides a friction stir additive manufacturing method, comprising the following steps:

[0080] The bar 40 is transported to the target channel 611 by the loading device. The loading device pushes the pressing member 20 of the pressing device, and the pressing member 20 rotates relative to the first seat 10 of the pressing device to avoid the bar 40 entering the target channel 611.

[0081] The feeding device moves away from the pressing device, and the pressing member 20 rotates relative to the first base body 10 to reset.

[0082] The material pressing device provides an upsetting force to the bar material 40 in the target channel 611 to perform friction stir material addition.

[0083] Working principle:

[0084] Reference Figure 6 , Figure 7 and Figure 8 As shown, during operation, a worker puts a corresponding number of square bars 40 into the accommodating space 511 of the material box 51 from the feed port 5112. The axial ends of the bars 40 are respectively arranged in the limiting grooves 5113.

[0085] The pressing device moves along the first direction D1 and away from the stirring device, so that the push rod 21 is separated from the target channel 611. At the same time, the locking drive drives the locking component 312 to engage with the locking part and lock the first base 10 to prevent the first base 10 from rotating relative to the second base 30 due to external interference and avoid phase shift.

[0086] The material box 51 is driven by the box driving member 56 to move along the second direction D2 and approach the stirring device. During the movement, the pushing screw 5122 on the material box 51 pushes the push rod 21, so that the push rod 21 in the second state rotates relative to the first seat body 10 to avoid and vacate a certain space to avoid the bar material 40, so that the bar material 40 can enter the target channel 611.

[0087] When the discharge port 5111 of the material box 51 reaches the top of the target channel 611, the first bar 40 in the accommodating space 511 has been pushed into place by the pushing member 52, and the remaining bars 40 are pressed by the tightening member 54. The discharge drive member and the blocking drive member are simultaneously activated, so that the discharge member 532 and the blocking member 552 are separated from the first bar 40, eliminating the friction between the first bar 40 and the second bar 40, and the first bar 40 is discharged from the discharge port 5111 and falls into the target channel 611.

[0088] After the bar 40 falls into the target channel 611, the material box 51 moves along the second direction D2 and away from the stirring device under the drive of the box driving member 56. During the movement, the material discharge member and the material blocking member are reset to prepare for the next bar 40 to be limited; the material tightening member 54 is separated from the bar 40 to facilitate the movement of the bar 40. The remaining bar 40 moves to the position along the limiting groove 5113 under the drive of the material pushing member 52. The material box 51 completes a loading action.

[0089] During the process of the material box 51 moving away, the push rod 21, which loses the force of the push screw 5122, is reset under the action of gravity, and its axial direction is parallel to the axial direction of the target channel 611. Driven by the corresponding driving member, the pressing device moves along the first direction D1 and approaches the stirring device. Under the action of the locking member, the push rod 21 is aligned with and enters the target channel 611, and abuts against the bar material 40.

[0090] After the locking drive element drives the locking component 312 to separate from the locking portion, the stirring device starts to rotate to perform friction stir additive manufacturing. During the manufacturing process, the pressing device keeps moving to provide a forging force for the bar 40.

[0091] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used herein are interpreted accordingly.

[0092] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0093] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A material pressing device, characterized in that: include: The first seat; as well as A pressing piece, wherein the pressing piece is arranged on the first seat body, and the working state of the pressing piece includes a first state and a second state. When the pressing piece is in the first state, the pressing piece can extend into a target channel, and the target channel is used to accommodate the rod material; when the pressing piece is in the second state, the pressing piece can rotate relative to the first seat body to avoid the rod material, so that the rod material enters the target channel.

2. The pressing device according to claim 1, characterized in that: The first seat body is provided with an open cavity, and the open cavity is provided with a shaft body; The material pressing piece is at least partially arranged in the open cavity, a strip hole is arranged on the material pressing piece, and the shaft body is movably arranged in the strip hole; Wherein, when the shaft body is at one end of the strip hole, the cavity wall of the open cavity abuts against the pressing piece to prevent the pressing piece from rotating around the shaft body, and the pressing piece enters the first state; when the shaft body is at the other end of the strip hole, the pressing piece enters the second state.

3. The pressing device according to claim 1, characterized in that: A limiting portion is disposed on the first seat body, and the limiting portion is used to limit the rotation angle of the pressing member when the pressing member is in the second state.

4. The pressing device according to claim 1, characterized in that: Also includes: A second seat body, wherein the second seat body is sleeved on the first seat body, and the first seat body is rotatable relative to the second seat body; The second seat body is configured to be movable along a first direction to drive the pressing member to extend into or withdraw from the target channel.

5. The pressing device according to claim 4, characterized in that: Also includes: A locking member, the locking member is arranged on the second seat body, the locking member comprises a locking driving member and a locking component, the driving end of the locking driving member is connected to the locking component, the locking driving member is used to drive the locking component to move along the first direction, and the first seat body is provided with a locking portion corresponding to the locking component; Wherein, when the pressing member extends into the target channel, the locking component is separated from the locking portion; When the pressing piece exits the target channel, the locking component is engaged with the locking portion.

6. The pressing device according to claim 1, characterized in that: The material pressing piece comprises a push rod, and the push rod is loosely matched with the target channel; along an axial direction perpendicular to the push rod, the cross-sectional shapes of the push rod and the target channel are both set to be polygonal.

7. A friction stir additive manufacturing device, characterized in that: include: The pressing device according to any one of claims 1 to 6, wherein the pressing device is configured to be movable along a first direction; as well as A feeding device, the feeding device is used to set the bar material, the feeding device is arranged on one side of the pressing device, and the feeding device is movable relative to the pressing device; Wherein, when the feeding device moves to above the target channel, the feeding device pushes the pressing piece, and the pressing piece rotates relative to the first seat to avoid, so that the bar material enters the target channel.

8. The friction stir additive manufacturing device according to claim 7, characterized in that: The feeding device comprises: A material box, the material box is configured to be movable along a second direction, a receiving space is provided in the material box, the receiving space is used to arrange the bar material, the axial direction of the bar material is parallel to the first direction, and when a plurality of the bar materials are provided, the plurality of the bar materials are arranged in sequence along the second direction; A material pushing member, the material pushing member is arranged on the material box, the material pushing member comprises a material pushing driving member and a material pushing component, the driving end of the material pushing driving member is connected to the material pushing component, the material pushing driving member is used to drive the material pushing component to move along the second direction, so that the material pushing component drives the bar material to move to the material outlet of the material box; and A discharge piece, wherein the discharge piece is arranged on the material box, and the discharge piece comprises a discharge driving piece and a discharge component, wherein the driving end of the discharge driving piece is connected to the discharge component, and the discharge driving piece is used to drive the discharge component to move so as to open or close the discharge port.

9. The friction stir additive manufacturing device according to claim 8, characterized in that: The feeding device comprises: A material tightening member, the material tightening member is arranged on the material box, the material tightening member comprises a material tightening driving member and a material tightening component, the driving end of the material tightening driving member is connected to the material tightening component, and the material tightening component is used to drive the material tightening component to move along a third direction to loosen or compress and position the bar stock; and A material blocking member, wherein the material blocking member is arranged on the material box, and the material blocking member and the material pushing member are respectively arranged on both sides of the bar material along the second direction; the material blocking member includes a material blocking driving member and a material blocking component, the driving end of the material blocking driving member is connected to the material blocking component, and the material blocking driving member is used to drive the material blocking component to move so as to loosen or block the positioning of the bar material.

10. The friction stir additive manufacturing device according to claim 7, characterized in that: Also includes: A stirring device is provided with a guide member and the target channel, the guide member is arranged around the channel opening of the target channel, and the guide member is provided with a guide slope.

11. A friction stir additive manufacturing method, characterized in that: The following steps are involved: The bar material is transported to the top of the target channel by the loading device; The feeding device pushes the pressing piece of the pressing device, and the pressing piece rotates relative to the first seat of the pressing device to avoid the rod material, so that the rod material enters the target channel; The feeding device moves away from the pressing device, and the pressing member rotates relative to the first seat and resets; The material pressing device provides an upsetting force to the bar material in the target channel to perform friction stir material addition.

Images