Double-head cooling stirring head device

Abstract

The utility model relates to the technical field of friction stir welding equipment, in particular to a double-head cooling stirring head device. The double-head cooling stirring head device comprises a cutter handle, a cooling assembly and a double-head stirring head, a mounting blind hole matched with the double-head stirring head is formed in one end of the cutter handle, the double-head stirring head comprises a limiting base and stirring columns coaxially arranged at the two ends of the limiting base, friction heads are arranged at the ends of the stirring columns, and the friction heads are arranged on the limiting base. Any stirring column of the double-end stirring head is inserted into the mounting blind hole and locked and fixed through a locking structure arranged at one end of the cutter handle, and the cooling assembly is used for cooling the double-end stirring head. The device has the advantages of simple and reasonable structural design and easiness in installation and maintenance; the problem that the temperature of a traditional stirring head rises in the stirring process can be effectively solved, and the product quality and the process stability are improved; meanwhile, the use efficiency of the double-head stirring head is improved, and the purposes of energy conservation and environmental protection are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of friction stir welding equipment, in particular to a double-head cooling stirring head device. Background Art

[0002] Friction welding is a method that uses the heat generated by the mutual movement and friction of the end faces of the workpieces to make the ends reach a thermoplastic state, and then quickly forges them to complete the welding. Friction welding can easily connect the same or different materials, including metals, some metal-based composite materials, ceramics and plastics. The friction welding method has been widely used in engineering due to its high productivity and good quality (currently mainly used in the welding of parts or components in the manufacturing process of new energy, aviation, aerospace, etc., and the objects of welding mainly include rotating parts, flat parts butt joints, etc.). Although other forms of friction welding technology have emerged to overcome the limitations of the geometric shape of the workpieces to be welded or to improve productivity, such as phase friction welding, radial friction welding, linear friction welding, etc., they are rarely used in practice.

[0003] At present, traditional friction welding uses a single-head stirring device. Since the stirring welding unit is a consumable component, the single head makes the stirring unit's utilization rate low, resulting in high consumables costs. In addition, during the welding process, since there is no cooling of the stirring welding unit, the performance of the stirring welding unit is easily affected by the friction temperature rise and reduced, greatly affecting its service life. In addition, during the welding process, since the current friction welding needs to be applied to the welding of metal alloys with low melting points, temperature control during welding is also relatively important, which affects the performance of the weld after welding. However, the existing single-head stirring device does not have the function of temperature control.

[0004] Based on this, it is necessary to develop a new double-head cooling and stirring device to overcome the defects of the above-mentioned prior art. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a double-head cooling stirring head device, which effectively overcomes the defects of the prior art.

[0006] The technical solution of the utility model to solve the above technical problems is as follows:

[0007] A double-headed cooling stirring head device comprises a tool handle, a cooling assembly and a double-headed stirring head, wherein one end of the tool handle is provided with a mounting blind hole adapted to the double-headed stirring head, the double-headed stirring head comprises a limit seat and stirring columns coaxially arranged at both ends of the limit seat, the ends of the stirring columns are provided with friction heads, any one of the stirring columns of the double-headed stirring head is inserted into the mounting blind hole and is locked and fixed by a locking structure arranged at one end of the tool handle, and the cooling assembly is used to cool the double-headed stirring head.

[0008] On the basis of the above technical solution, the present invention can also be improved as follows.

[0009] Furthermore, the tool holder cooling assembly includes a cooling fixing sleeve, a cylindrical connecting portion is provided at one end of the tool holder, the mounting blind hole is coaxially provided at the end of the connecting portion, the cooling fixing sleeve is coaxially sleeved outside the connecting portion and sealedly connected to the connecting portion, a liquid inlet channel and a liquid outlet channel which are respectively connected to both ends of the mounting blind hole are provided in the connecting portion, a cooling ring groove which is respectively connected to the liquid inlet channel and the liquid outlet channel is provided on the inner side of the cooling fixing sleeve, and a liquid inlet and a liquid outlet which are respectively connected to the cooling ring groove are provided on the surface of the cooling fixing sleeve.

[0010] Furthermore, a cavity between the end of the stirring column and the bottom of the mounting blind hole forms a cooling cavity, and the two ends of the cooling cavity are respectively provided with the liquid inlet channel and the liquid outlet channel.

[0011] Furthermore, sealing rings which are in sealing contact with the connecting portion are respectively embedded on the inner walls of the two ends of the cooling fixing sleeve and the portion between the liquid inlet channel and the liquid outlet channel.

[0012] Furthermore, the liquid inlet and the liquid outlet are located on the same side of the cooling fixed sleeve.

[0013] Furthermore, a fixing bracket is installed on the other side of the cooling fixing sleeve.

[0014] Furthermore, the fixing bracket is connected with an arc plate, which is fitted on the surface of the cooling fixing sleeve and is threadedly connected and fixed to the cooling fixing sleeve via bolts passing through the arc plate.

[0015] Furthermore, the above-mentioned liquid inlet channels are provided in plurality and are distributed at intervals along the circumference of the above-mentioned connecting portion, and the above-mentioned liquid outlet channels are provided in plurality and are distributed at intervals along the circumference of the above-mentioned connecting portion.

[0016] Furthermore, the locking structure includes a set screw, a screw hole is penetrated through the side wall of the blind installation hole, the set screw is screwed into the screw hole and vertically abuts against the stirring column.

[0017] Furthermore, the ends of the stirring columns are all configured to be frustum-shaped.

[0018] The beneficial effects of the utility model are: simple and reasonable structural design, easy installation and maintenance; it can effectively solve the problem of temperature increase of the traditional mixing head during the mixing process, and improve product quality and process stability; at the same time, the double-head mixing head increases the use efficiency of the mixing head and achieves the goal of energy saving and environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1It is a structural elevation view of the double-head cooling stirring head device of the utility model;

[0020] Figure 2 It is a structural side view of the double-head cooling stirring head device of the utility model;

[0021] Figure 3 It is a structural sectional view of the double-head cooling stirring head device of the utility model.

[0022] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0023] 1. Tool handle; 2. Cooling assembly; 3. Double-head stirring head; 4. Locking structure; 5. Fixed bracket; 11. Mounting blind hole; 12. Connecting part; 21. Cooling fixed sleeve; 31. Limit seat; 32. Stirring column; 33. Friction head; 121. Liquid inlet channel; 122. Liquid outlet channel; 211. Cooling ring groove; 212. Sealing ring. DETAILED DESCRIPTION

[0024] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0025] Example: Figure 1 , 2 As shown in Figure 3, the double-headed cooling stirring head device of this embodiment includes a tool handle 1, a cooling component 2 and a double-headed stirring head 3. The one end of the tool handle 1 is provided with a mounting blind hole 11 adapted to the double-headed stirring head 3. The double-headed stirring head 3 includes a limit seat 31 and stirring columns 32 coaxially arranged at both ends of the limit seat 31. The ends of the stirring columns 32 are provided with friction heads 33. Any one of the stirring columns 32 of the double-headed stirring head 3 is inserted into the mounting blind hole 11 and is locked and fixed by a locking structure 4 arranged at one end of the tool handle 1. The cooling component 2 is used to cool the double-headed stirring head 3.

[0026] The usage process is as follows:

[0027] The other end of the handle 1 is connected to the rotating drive device of the equipment. During welding, the equipment drives the entire double-head cooling stirring head device to move. At the same time, the rotating drive device drives the handle 1 and the double-head stirring head 3 connected to the handle 1 to rotate. In coordination with the movement of the equipment, the friction head 33 at one end of the double-head stirring head 3 is inserted into the gap between the two parts to be welded. Through rotating friction, the parts to be welded between the two parts are melted and welded. During the welding process, the double-head stirring head 3 can be cooled and cooled by the cooling component 2, so that its good welding performance can be maintained for a longer time. At the same time, during the cooling process of the double-head stirring head 3, the temperature of the double-head stirring head 3 can be adjusted, that is, the temperature of the friction head 33 is indirectly adjusted to adjust the welding temperature. For welding of metal alloys with low melting points (such as aluminum alloys), the temperature is kept at about 500°C to ensure good performance after welding. On the whole, the device structure is simple and reasonable, easy to install and maintain; it can effectively solve the problem of temperature increase of the traditional stirring head during the stirring process, improve product quality and process stability; at the same time, the double-head stirring head increases the use efficiency of the stirring head and achieves the goal of energy saving and environmental protection.

[0028] As a preferred embodiment, the tool handle 1 cooling assembly 2 includes a cooling fixing sleeve 21, a cylindrical connecting portion 12 is provided at one end of the tool handle 1, the end of the connecting portion 12 is coaxially provided with the mounting blind hole 11, the cooling fixing sleeve 21 is coaxially sleeved outside the connecting portion 12 and is sealed with the connecting portion 12, a liquid inlet channel 121 and a liquid outlet channel 122 which are respectively connected with the two ends of the mounting blind hole 11 are provided in the connecting portion 12, a cooling ring groove 211 which is respectively connected with the liquid inlet channel 121 and the liquid outlet channel 122 is provided on the inner side of the cooling fixing sleeve 21, and a liquid inlet and a liquid outlet which are respectively connected with the cooling ring groove 211 are provided on the surface of the cooling fixing sleeve 21.

[0029] In the above-mentioned implementation scheme, one end of the tool handle 1 is designed to be cylindrical (connecting portion 12), and can achieve a good coaxial connection with the double-headed stirring head 3 which is also cylindrical through the installation blind hole 11, so as to ensure the welding accuracy. At the same time, the cooling component 2 adopts a cooling fixing sleeve 21 which is a sealing sleeve arranged outside the connecting portion 12. During operation, the connecting portion 12 rotates with the tool handle 1 relative to the cooling fixing sleeve 21 (that is, the cooling fixing sleeve 21 does not rotate), and the coolant enters and exits through the liquid inlet (denoted by a in the figure) and the liquid outlet (denoted by b in the figure) of the cooling fixing sleeve 21 respectively. The coolant then enters the liquid inlet channel 121 and the liquid outlet channel 122 through the cooling ring groove 211, and cools the stirring column 32 of the double-headed stirring head 3 extending into the installation blind hole 11, so as to achieve the cooling of the double-headed stirring head 3 as a whole. Its structural design is reasonable, the flow channel design of the coolant is ingenious and smooth, and the cooling effect is good.

[0030] It should be noted that before operation, the liquid inlet pipeline and the liquid outlet pipeline are connected at the liquid inlet and the liquid outlet respectively, and then the liquid inlet pipeline and the liquid outlet pipeline are connected to the coolant source respectively, and a delivery pump is set on the liquid inlet pipeline to realize the circulating flow cooling of the coolant.

[0031] As a preferred embodiment, the cavity between the end of the stirring column 32 and the bottom of the mounting blind hole 11 forms a cooling cavity, and the two ends of the cooling cavity are respectively provided with the liquid inlet channel 121 and the liquid outlet channel 122.

[0032] In the above embodiment, the distribution of the liquid inlet channel 121 and the liquid outlet channel 122 is relatively reasonable, and the coolant flows smoothly, which can achieve good cooling of the stirring column 32 in the cooling chamber.

[0033] As a preferred embodiment, sealing rings 212 that are in sealing contact with the connecting portion 12 are respectively embedded on both ends of the cooling fixing sleeve 21 and on the inner wall of the portion between the liquid inlet channel 121 and the liquid outlet channel 122 .

[0034] In the above implementation scheme, dynamic sealing between the connecting portion 12 and the cooling fixed sleeve 21 is achieved by sealing rings 212 at both ends and in the middle. At the same time, the area between the flow channels for the coolant to enter and exit is also sealed by the sealing ring 212 to ensure the effective circulation of the coolant in the internal flow channels.

[0035] In this embodiment, the liquid inlet and the liquid outlet are located on the same side of the cooling fixed sleeve 21. When connecting the inlet and outlet pipelines of the cooling liquid, it is sufficient to connect the pipes on one side of the cooling fixed sleeve 21, and the pipeline connection and arrangement are relatively regular and simple.

[0036] As a preferred embodiment, a fixing bracket 5 is installed on the other side of the cooling fixing sleeve 21 .

[0037] In the above implementation scheme, by setting a fixing bracket 5 on the other side of the cooling fixing sleeve 21, and then connecting and fixing the fixing bracket 5 with the equipment, a stable relative rotation assembly structure between the cooling fixing sleeve 21 and the tool handle 1 can be achieved, ensuring the smooth operation of the entire device.

[0038] As a preferred embodiment, the fixing bracket 5 is connected with an arc plate, which is attached to the surface of the cooling fixing sleeve 21 and is threadedly connected and fixed to the cooling fixing sleeve 21 via bolts passing through the arc plate.

[0039] In the above embodiment, the design of the arc plate allows the fixing bracket 5 to have a better surface fit with the cooling fixing sleeve 21 , thereby achieving a compact and firm assembly between the two.

[0040] As a preferred embodiment, a plurality of the liquid inlet channels 121 are provided and are spaced apart along the circumference of the connecting portion 12 , and a plurality of the liquid outlet channels 122 are provided and are spaced apart along the circumference of the connecting portion 12 .

[0041] In the above embodiment, a plurality of liquid inlet channels 121 and a plurality of liquid outlet channels 122 are respectively provided to ensure that the coolant flowing through the cooling ring groove 211 and the mounting blind hole 11 has a relatively moderate flow rate.

[0042] As a preferred embodiment, the locking structure 4 includes a set screw. A screw hole is formed through the side wall of the blind mounting hole 11 . The set screw is screwed into the screw hole and vertically abuts against the stirring column 32 .

[0043] In the above embodiment, the diameter of the stirring column 32 is consistent with the diameter of the installation blind hole 11. After the two are inserted, they are fastened with the set screws on the side wall to achieve synchronous rotation linkage between the stirring column 32 and the handle 1. The assembly structure is also relatively simple, and the operation is relatively convenient and quick.

[0044] In this embodiment, the ends of the stirring column 32 are all set to be in a frustum shape, and a friction head 33 is set at the small end, so that the friction head 33 can be easily inserted into the gap between two parts to be welded.

[0045] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0046] 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 utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0047] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0049] 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 utility model. 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.

[0050] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A double-head cooling stirring head device, characterized in that: The invention comprises a tool handle (1), a cooling component (2) and a double-headed stirring head (3); one end of the tool handle (1) is provided with a mounting blind hole (11) adapted to the double-headed stirring head (3); the double-headed stirring head (3) comprises a limit seat (31) and stirring columns (32) coaxially arranged at both ends of the limit seat (31); the ends of the stirring columns (32) are provided with friction heads (33); any one of the stirring columns (32) of the double-headed stirring head (3) is inserted into the mounting blind hole (11) and is locked and fixed by a locking structure (4) arranged at one end of the tool handle (1); the cooling component (2) is used to cool the double-headed stirring head (3).

2. A double-head cooling stirring head device according to claim 1, characterized in that: The tool handle (1) cooling assembly (2) comprises a cooling fixing sleeve (21), one end of the tool handle (1) is provided with a cylindrical connecting portion (12), the end of the connecting portion (12) is coaxially provided with the mounting blind hole (11), the cooling fixing sleeve (21) is coaxially sleeved outside the connecting portion (12) and is sealedly connected to the connecting portion (12), the connecting portion (12) is respectively provided with a liquid inlet channel (121) and a liquid outlet channel (122) which are connected to both ends of the mounting blind hole (11), the inner side of the cooling fixing sleeve (21) is provided with a cooling ring groove (211) which is connected to the liquid inlet channel (121) and the liquid outlet channel (122), respectively, and the surface of the cooling fixing sleeve (21) is provided with a liquid inlet and a liquid outlet which are connected to the cooling ring groove (211).

3. A double-head cooling stirring head device according to claim 2, characterized in that: The cavity between the end of the stirring column (32) and the bottom of the mounting blind hole (11) forms a cooling cavity, and the two ends of the cooling cavity are respectively provided with the liquid inlet channel (121) and the liquid outlet channel (122).

4. A double-head cooling stirring head device according to claim 3, characterized in that: Sealing rings (212) which are in sealing contact with the connecting portion (12) are respectively embedded on the inner walls of the two ends of the cooling fixed sleeve (21) and the portion between the corresponding liquid inlet channel (121) and the liquid outlet channel (122).

5. A double-head cooling stirring head device according to claim 2, characterized in that: The liquid inlet and the liquid outlet are located on the same side of the cooling fixing sleeve (21).

6. A double-head cooling stirring head device according to claim 5, characterized in that: A fixing bracket (5) is installed on the other side of the cooling fixing sleeve (21).

7. A double-head cooling stirring head device according to claim 6, characterized in that: The fixing bracket (5) is connected to an arc plate, which is attached to the surface of the cooling fixing sleeve (21) and is threadedly connected and fixed to the cooling fixing sleeve (21) via bolts passing through the arc plate.

8. A double-head cooling stirring head device according to claim 2, characterized in that: A plurality of liquid inlet channels (121) are provided and are spaced apart along the circumference of the connecting portion (12); a plurality of liquid outlet channels (122) are provided and are spaced apart along the circumference of the connecting portion (12).

9. A double-head cooling stirring head device according to claim 1, characterized in that: The locking structure (4) comprises a set screw, and a screw hole is provided through the side wall of the mounting blind hole (11). The set screw is screwed into the screw hole and vertically abuts against the stirring column (32).

10. A double-head cooling stirring head device according to any one of claims 1 to 9, characterized in that: The ends of the stirring column (32) are all configured in a frustum shape.

Images