A rod material conveying device for friction stir additive and friction stir additive equipment

Abstract

The present invention discloses a rod conveying device for stir friction additive manufacturing, which belongs to the field of additive manufacturing. It includes a bracket, a first receiving member, a second receiving member and a third receiving member. The first receiving member is hollow to form a feed channel, the second receiving member is hollow to form a receiving channel, and the third receiving member is hollow to form a feeding channel. The second receiving member is slidably installed on the bracket along the axis of the feed channel so that the feed channel, the receiving channel and the feeding channel can be selectively connected. In this structure, the second receiving member can cooperate with the first limiting groove provided by the first receiving member through the first limiting protrusion provided thereon, so that the receiving channel and the feed channel are connected, so that the rod can enter the receiving channel from the feed channel, and the second receiving member can also cooperate with the second limiting groove provided by the third receiving member through the second limiting protrusion provided thereon, so that the rod can enter the feeding channel provided on the third receiving member from the receiving channel, thereby realizing continuous feeding of the rod.

Description

Technical Field

[0001] The present invention relates to the technical field of additive manufacturing, and in particular to a rod material conveying device and a friction stir additive equipment for friction stir additive manufacturing. Background Art

[0002] Friction stir additive manufacturing has rod feeding, wire feeding and other methods, but in rod feeding additive manufacturing, continuous additive manufacturing has certain difficulties in rod feeding. Rods are directional and need to be fed into the equipment at a fixed angle. Moreover, when rods are added, the rods keep rotating, making centering and transportation difficult. A new rod feeding device is needed to achieve continuous transportation and centering of rods. 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 propose a rod material conveying device for stir friction additive manufacturing, comprising a bracket, a first receiving member, a second receiving member and a third receiving member, the axes of the first receiving member, the second receiving member and the third receiving member are collinear; the first receiving member is hollow to form a feed channel, the second receiving member is hollow to form a receiving channel, and the third receiving member is hollow to form a feeding channel, the first receiving member, the second receiving member and the third receiving member are arranged in sequence along the axis of the feed channel at intervals, and the second receiving member is slidably mounted on the bracket along the axis of the feed channel so that the feed channel, the receiving channel and the feeding channel can be selectively connected; the second receiving member includes a sliding seat, the bracket includes a slide rail extending along the axial direction, the sliding seat and the slide rail are slidably matched, the first receiving member is provided with a first limiting groove, the second receiving member is provided with a first limiting protrusion and a second limiting protrusion, the third receiving member is provided with a second limiting groove, the first limiting protrusion is suitable for snapping into the first limiting groove, and the second limiting protrusion is suitable for snapping into the second limiting groove.

[0005] According to the above-mentioned technical means, the second receiving member of the present invention can cooperate with the first limiting groove provided on the first receiving member through the first limiting protrusion, so that the receiving channel and the feeding channel are connected, so that the rod material can enter the receiving channel from the feeding channel. Further, the second receiving member can also cooperate with the second limiting groove provided on the third receiving member through the second limiting protrusion, so that the rod material can enter the feeding channel provided on the third receiving member from the receiving channel, thereby realizing continuous feeding of the rod material.

[0006] Optionally, in one embodiment of the present invention, the second receiving member and the third receiving member are rotatably mounted on the bracket.

[0007] Optionally, in one embodiment of the present invention, the second receiving member further includes a rotating portion, the rotating portion is rotatably mounted on the sliding seat, and the rotating portion is hollow to form a receiving channel.

[0008] Optionally, in one embodiment of the present invention, the bracket also includes a first mounting plate and a second mounting plate, the first mounting plate and the second mounting plate are axially spaced apart, the slide rail is installed between the first mounting plate and the second mounting plate, a first through hole is provided on the first mounting plate, a second through hole is provided on the second mounting plate, the first through hole is empty outside the first receiving member, and the second through hole is empty outside the third receiving member.

[0009] Optionally, in one embodiment of the present invention, it further includes an elastic reset member, which is stopped between the second mounting plate and the sliding seat to keep the second limiting protrusion out of the second limiting groove under normal conditions.

[0010] Optionally, in one embodiment of the present invention, the side wall of the feed channel is provided with a first guide portion extending axially toward the second receiving member, a first limiting protrusion is formed on the side wall of the second receiving member, the first guide portion is formed as a ratchet extending axially, and a first limiting groove is formed at the root of the ratchet tooth of the first guide portion.

[0011] Optionally, in one embodiment of the present invention, a second guide portion extending axially toward the second receiving member is provided on the side wall of the feeding channel, a second limiting protrusion is formed on the side wall of the second receiving member, the second guide portion is formed as a ratchet extending axially, and a second limiting groove is formed at the root of the ratchet teeth of the second guide portion.

[0012] Optionally, in one embodiment of the present invention, a rotating bearing is provided on both the first limiting protrusion and the second limiting protrusion, the axis of the rotating bearing is perpendicular to the axis of the first receiving member, and the rotating bearing is suitable for sliding along the inclined surface of the corresponding ratchet tooth.

[0013] Optionally, in one embodiment of the present invention, the tooth shape of the ratchet teeth of the first receiving member is opposite to that of the ratchet teeth of the third receiving member.

[0014] Optionally, in one embodiment of the present invention, the first receiving member is rotatably mounted on the bracket.

[0015] Another object of the present invention is to propose a friction stir additive device, comprising the above-mentioned rod conveying device and a main shaft, wherein the main shaft has a accommodating channel for accommodating rods; the main shaft is suitable for being fixedly connected to a third supporting component so that the accommodating channel is connected to the feeding channel. The application of the rod conveying device in the friction stir additive device can realize continuous feeding of the friction stir additive device, thereby realizing continuous additive manufacturing.

[0016] 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

[0017] 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:

[0018] Figure 1 It is a structural schematic diagram of a bar material conveying device according to an embodiment of the present invention;

[0019] Figure 2 is a schematic structural diagram of a bar material conveying device according to another embodiment of the present invention;

[0020] Figure 3 Schematic diagram of the structure of a bar material conveying device according to another embodiment of the present invention.

[0021] Reference numerals:

[0022] A first mounting plate 7, a second mounting plate 8, and a slide rail 9;

[0023] A first receiving member 10, a feeding channel 11, and a first limiting groove 12;

[0024] A second receiving member 20, a first limiting protrusion 22-1, a second limiting protrusion 22-2, and a sliding seat 23;

[0025] A third receiving member 30 , a feeding channel 31 , and a second limiting groove 32 . DETAILED DESCRIPTION

[0026] 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.

[0027] like Figure 1 and Figure 2 As shown, the bar material conveying device includes a bracket, a first receiving member 10, a second receiving member 20 and a third receiving member 30, and the axes of the first receiving member 10, the second receiving member 20 and the third receiving member 30 are collinear. In the present invention, one or more of the first receiving member 10, the second receiving member 20 and the third receiving member 30 can be metal parts, which is conducive to improving the life of the bar material conveying device.

[0028] The first receiving member 10 is hollow to form a feed channel 11, the second receiving member 20 is hollow to form a receiving channel, and the third receiving member 30 is hollow to form a feeding channel 31. The first receiving member 10, the second receiving member 20 and the third receiving member 30 are sequentially spaced apart along the axis of the feed channel 11, and the second receiving member 20 is slidably mounted on the bracket along the axis of the feed channel 11 so that the feed channel 11, the receiving channel and the feeding channel 31 can be selectively connected; for example, when the second receiving member 20 slides toward the direction of the third receiving member 30, it can cooperate with the third receiving member 30 to connect the receiving channel and the feeding channel 31. When the second receiving member 20 slides in the direction of the first receiving member 10, it can cooperate with the first receiving member 10 so that the receiving channel and the feed channel 11 are connected. Furthermore, the second receiving member 20 includes a sliding seat 23, and the bracket includes a slide rail 9 extending axially. The sliding seat 23 and the slide rail 9 are slidably cooperated, so that the second receiving member 20 can slide along the axis of the feed channel 11.

[0029] Furthermore, the first receiving member 10 is provided with a first limiting groove 12, the second receiving member 20 is provided with a first limiting protrusion 22-1 and a second limiting protrusion 22-2, and the third receiving member 30 is provided with a second limiting groove 32, the first limiting protrusion 22-1 is suitable for snapping into the first limiting groove 12, and the second limiting protrusion 22-2 is suitable for snapping into the second limiting groove 32.

[0030] It can be understood that the second receiving member 20 is inserted into the first limiting groove 12 through the first limiting protrusion 22-1, so that the receiving channel is connected to the feeding channel 11, and the rod enters the receiving channel through the feeding channel 11. The slidable second receiving member 20 can also be inserted into the second limiting groove 32 through the second limiting protrusion 22-2, so that the receiving channel and the feeding channel 31 are connected, and the rod can enter the feeding channel 31 through the receiving channel. When the feeding channel 31 is connected to the main shaft of the stir friction additive device, it can well realize the continuous transportation of the rod.

[0031] In one embodiment of the present invention, the second receiving member 20 and the third receiving member 30 are both rotatably mounted on the bracket.

[0032] It is understandable that the rod conveying device of the present invention is applied to stir friction additive manufacturing. The equipment for stir friction additive manufacturing, such as stir friction additive manufacturing equipment, is provided with a main shaft, and the main shaft is provided with a accommodating channel for accommodating rods. The rod conveying device can convey the rods into the accommodating channel. The main shaft can rotate to drive the rods in the accommodating channel to rotate. The rotating rods can continuously stir and rub with the substrate to generate heat, thereby achieving plastic softening to achieve stir friction additive manufacturing. The third receiving member 30 that is rotatably arranged is conducive to being installed on the main shaft to continuously feed the main shaft. In order to connect the receiving channel set by the second receiving member 20 with the feeding channel 31 set by the rotating third receiving member 30, the second receiving member 20 also needs to be rotated, so that the second limiting protrusion 22-2 is clamped into the second limiting groove 32, so that the second receiving member 20 and the third receiving member 30 rotate at the same time, and the receiving channel is connected with the feeding channel 31, so that the rods can enter the feeding channel 31 from the receiving channel to achieve feeding.

[0033] Furthermore, the shape of the bar stock can be circular or other shapes, such as square, triangle and other polygonal shapes. Especially for polygonal bar stock, the above structure can well align the polygonal bar stock in the receiving channel with the feeding channel 31, that is, by the simultaneous rotation of the second receiving member 20 and the third receiving member 30, the posture of the receiving channel is consistent with the posture of the feeding channel 31, so that the bar stock can enter the feeding channel 31 set on the third receiving member 30 in a rotating state from the receiving channel.

[0034] Furthermore, when it is necessary to fill the rod material, the second receiving member 20 slides toward the first receiving member 10 along the axis of the feed channel 11. During the sliding process, the first limiting protrusion 22-1 can be inserted into the first limiting groove 12, so that the posture of the receiving channel is consistent with the posture of the feed channel 11, that is, the receiving channel and the feed channel 11 are connected, so that the rod material can enter the receiving channel from the feed channel 11.

[0035] In this way, after the bar material of the present invention, for example, has a rectangular cross-sectional shape, it enters the receiving channel from the feed channel 11, and one end of the bar material moves together with the second receiving member 20 toward the direction of the third receiving member 30. Under the action of the second limiting protrusion 22-2 and the second limiting groove 32, the receiving channel and the feeding channel 31 are connected. When the bar material is polygonal and the bar material is long enough, the first receiving member 10, the second receiving member 20 and the third receiving member 30 will rotate simultaneously under the action of the bar material. In the above case, the first receiving member 10 can be rotatably arranged. In a specific embodiment, a guide portion can be arranged upstream of the feed channel 11, for example, the upper part of the guide portion is circular, the lower part of the guide portion is rectangular, and there is a transition section between the circular and rectangular, so that no matter what posture the rectangular bar material is, it can be guided into the feed channel 11 by the action of the guide portion to realize automatic loading.

[0036] When the bar is polygonal and relatively short, that is, when the bar is separated from the feed channel 11 after entering the receiving channel, the first receiving member 10 can be set without rotation. The second receiving member 20 and the bar separate from the first receiving member 10 and move toward the third receiving member 30, and then under the action of the second limiting protrusion 22-2 and the second limiting groove 32, the receiving channel and the feed channel 31 are connected to allow the bar to enter the feed channel 31. At this time, the second receiving member 20 and the third receiving member 30 rotate at the same time, but will not drive the first receiving member 10 to rotate. In this way, the first receiving member 10 does not need to rotate, and the first receiving member 10 does not rotate, and the posture of its feed channel 11 can be fixed, which is convenient for automatic loading.

[0037] Furthermore, the power for the second receiving member 20 to move toward the third receiving member 30 can be that the bar material freely falls under gravity and drives the second receiving member 20 to move through friction. At this time, an elastic reset member can be set between the second receiving member 20 and the third receiving member 30 to reset the second receiving member 20. This structure will be described in detail later. Alternatively, a second receiving member driving structure, such as a driving cylinder, is used to drive the second receiving member 20 to slide on the bracket.

[0038] In one embodiment of the present invention, the side wall of the feed channel 11 is provided with a first guide extending in the axial direction toward the second receiving member 20, the first limiting protrusion 22-1 is formed on the side wall of the second receiving member 20, the first guide is formed as a ratchet extending in the axial direction, and the first limiting groove 12 is formed at the root of the ratchet teeth of the first guide; the second limiting protrusion 22-2 is formed on the side wall of the second receiving member 20, the side wall of the feed channel 31 is provided with a second guide extending in the axial direction toward the second receiving member 20, the second guide is formed as a ratchet extending in the axial direction, and the second limiting groove 32 is formed at the root of the ratchet teeth of the second guide. The first limiting protrusion 22-1 and the second limiting protrusion 22-2 are both provided with a rotating bearing, the axis of the rotating bearing is perpendicular to the axis of the first receiving member 10, and the rotating bearing is suitable for sliding along the inclined surface of the ratchet. Preferably, the tooth shape of the ratchet provided on the first receiving member 10 is opposite to that of the ratchet provided on the third receiving member 30.

[0039] like Figure 1 and 2 As shown, even if the third receiving member 30 is rotated, the limiting protrusion can slide along the inclined surface of the ratchet tooth, thereby guiding the limiting protrusion to cooperate with the limiting groove.

[0040] In one embodiment of the present invention, Figure 3 As shown, the second receiving member 20 includes a sliding seat 23 and a rotating part, the rotating part is rotatably mounted on the sliding seat 23, the rotating part is hollow to form a receiving channel, the bracket includes a slide rail 9 extending along the axial direction, and the sliding seat 23 is slidably matched with the slide rail 9. For example, the slide rail 9 is a guide column, and a sliding sleeve (not shown in the figure) is provided on the sliding seat 23, and the sliding seat 23 can slide reliably by sliding the sliding sleeve on the guide column.

[0041] In one embodiment of the present invention, the bracket also includes a first mounting plate 7 and a second mounting plate 8, the first mounting plate 7 and the second mounting plate 8 are axially spaced apart, the slide rail 9 is installed between the first mounting plate 7 and the second mounting plate 8, the first mounting plate 7 is provided with a first through hole, the second mounting plate 8 is provided with a second through hole, the first through hole is empty outside the first receiving member 10, the second through hole is empty outside the third receiving member 30, and the slide rail 9 is installed between the first mounting plate 7 and the second mounting plate 8.

[0042] In one embodiment of the present invention, an elastic reset member (not shown in the figure) may be further provided, and the elastic reset member may stop between the second mounting plate 8 and the sliding seat 23 to keep the second limiting protrusion 22-2 out of the second limiting groove 32 under normal conditions. That is, under normal conditions, the first receiving member 10 and the second receiving member 20 are in a matched state, so that when feeding is required, the bar material can directly enter the receiving channel through the feeding channel 11, and the structure is simple and reliable, and the operation efficiency is high.

[0043] The present invention also proposes a friction stir additive device, which includes the rod conveying device described above. The friction stir additive device includes a main shaft, and the main shaft has a receiving channel for receiving rods. The main shaft is fixedly connected to the third receiving member 30, that is, when the main shaft rotates, it can drive the third receiving member 30 to rotate, and the receiving channel provided on the main shaft is connected to the feeding channel 31 provided on the third receiving member 30, so that the rod can enter the receiving channel through the feeding channel 31. The fixed connection between the main shaft and the third receiving member 30 is conducive to the corresponding communication between the receiving channel provided on the main shaft and the feeding channel 31 provided on the third receiving member 30. For example, when the rod is a polygon, the polygonal rod can easily enter the receiving channel through the feeding channel 31 to realize continuous feeding for the main shaft. Further, the main shaft can rotate to drive the rod in the receiving channel to rotate, and the rotating rod can continuously stir and rub with the substrate to generate heat, thereby realizing plastic softening, so as to realize friction stir additive manufacturing.

[0044] 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.

[0045] 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.

[0046] 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 rod conveying device for stir friction additive manufacturing, characterized in that: include: The bracket, the first receiving member, the second receiving member and the third receiving member, wherein the axes of the first receiving member, the second receiving member and the third receiving member are collinear; The first receiving member is hollow to form a feed channel, the second receiving member is hollow to form a receiving channel, and the third receiving member is hollow to form a feeding channel. The first receiving member, the second receiving member and the third receiving member are sequentially arranged at intervals along the axis of the feed channel, and the second receiving member is slidably mounted on the bracket along the axis of the feed channel so that the feed channel, the receiving channel and the feeding channel can be selectively connected. The second receiving member includes a sliding seat, and the bracket includes a slide rail extending in the axial direction, and the sliding seat is slidably matched with the slide rail. The first receiving member is provided with a first limiting groove, the second receiving member is provided with a first limiting protrusion and a second limiting protrusion, the third receiving member is provided with a second limiting groove, the first limiting protrusion is suitable for snapping into the first limiting groove, and the second limiting protrusion is suitable for snapping into the second limiting groove; The side wall of the feed channel is provided with a first guide portion extending axially toward the second receiving member, the first limiting protrusion is formed on the side wall of the second receiving member, the first guide portion is formed as a ratchet extending axially, and the first limiting groove is formed at the root of the ratchet of the first guide portion. 2 . The bar material conveying device according to claim 1 , wherein the second receiving member and the third receiving member are rotatably mounted on the bracket. 3 .

3. The bar material conveying device according to claim 2, characterized in that: The second receiving member further includes a rotating portion, which is rotatably mounted on the sliding seat, and the rotating portion is hollow to form the receiving channel.

4. The bar material conveying device according to claim 3, characterized in that: The bracket also includes a first mounting plate and a second mounting plate, the first mounting plate and the second mounting plate are axially spaced apart, the slide rail is installed between the first mounting plate and the second mounting plate, the first mounting plate is provided with a first through hole, the second mounting plate is provided with a second through hole, the first through hole is hollowly sleeved outside the first receiving member, and the second through hole is hollowly sleeved outside the third receiving member.

5. The bar material conveying device according to claim 4, characterized in that: It also includes an elastic reset member, which is stopped between the second mounting plate and the sliding seat to keep the second limiting protrusion away from the second limiting groove under normal conditions.

6. The bar material conveying device according to claim 1, characterized in that: A second guide portion extending axially toward the second receiving member is provided on the side wall of the feeding channel, the second limiting protrusion is formed on the side wall of the second receiving member, the second guide portion is formed as a ratchet extending axially, and the second limiting groove is formed at the root of the ratchet of the second guide portion.

7. The bar material conveying device according to claim 6, characterized in that: The first limiting protrusion and the second limiting protrusion are both provided with a rotating bearing, the axis of the rotating bearing is perpendicular to the axis of the first receiving member, and the rotating bearing is suitable for sliding along the corresponding inclined surface of the ratchet tooth.

8. The bar material conveying device according to claim 7, characterized in that: The ratchet teeth of the first receiving member and the ratchet teeth of the third receiving member have tooth shapes opposite to each other.

9. The bar material conveying device according to any one of claims 1 to 8, characterized in that: The first receiving member is rotatably mounted on the bracket.

10. A friction stir additive device, characterized in that: include: The bar conveying device according to any one of claims 1 to 9; A main shaft, wherein the main shaft has a receiving passage for receiving the bar material; The main shaft is suitable for being fixedly connected with the third receiving member so that the accommodating channel is communicated with the feeding channel.

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