CN218874080U

CN218874080U - Friction stir welding tool

Info

Publication number: CN218874080U
Application number: CN202223161721.XU
Authority: CN
Inventors: 薛松平; 钟俊颖; 李丰源; 廖浩延; 宾炜; 杨征天
Original assignee: Guangdong Hesheng New Energy Technology Co ltd
Current assignee: Guangdong Hesheng New Energy Technology Co ltd
Priority date: 2022-11-25
Filing date: 2022-11-25
Publication date: 2023-04-18
Anticipated expiration: 2032-11-25

Abstract

The utility model discloses a friction stir welding frock, it includes: the base is provided with a workpiece bearing table; the main pressing device is arranged on the base and comprises a covering type pressing piece and a first pressing driving mechanism, the covering type pressing piece can move up and down in a translation mode relative to the base, the covering type pressing piece is used for pressing a workpiece arranged on the workpiece bearing table, and the first pressing driving mechanism is used for providing pressing force for the covering type pressing piece; the secondary pressing device is arranged on the base and comprises a pressing piece and a second pressing driving mechanism, the pressing piece is used for being abutted against the covering type pressing piece, and the second pressing driving mechanism is used for providing vertical downward force for the pressing piece to press the covering type pressing piece. Foretell friction stir welding frock, the work piece plane degree improves the effect better.

Description

Friction stir welding tool

Technical Field

The utility model relates to a welding auxiliary production instrument, in particular to friction stir welding frock.

Background

The existing friction stir welding tool is generally only provided with a pressing point around the peripheral edge of a workpiece which is spliced side by side, and because the middle area of the spliced part (welding seam) of the workpiece is not clamped, a gap exists between the welding seam and the table surface of the tool, and in the welding process, the phenomena of abnormal quality such as welding seam cracking, local concave-convex deformation and the like often occur. In order to overcome the problems, some friction stir welding tools are provided in the prior art, and the workpieces are integrally compressed by arranging covering pressing parts which stretch across different positions of the workpieces, so that the workpieces can be fully and tightly attached to the table surface of the tool from the edge to the middle, and the quality problems are reduced. However, although the problem of weld cracking is well improved, the existing friction stir welding tool still has a defect in improving the product flatness.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a friction stir welding frock, the work piece plane degree improves the effect better.

According to the utility model discloses friction stir welding frock, it includes: the base is provided with a workpiece bearing table; the main pressing device is arranged on the base and comprises a covering type pressing piece and a first pressing driving mechanism, the covering type pressing piece can move up and down in a translation mode relative to the base, the covering type pressing piece is used for pressing a workpiece arranged on the workpiece bearing table, and the first pressing driving mechanism is used for providing pressing force for the covering type pressing piece; the secondary pressing device is arranged on the base and comprises a pressing piece and a second pressing driving mechanism, the pressing piece is used for being abutted against the covering type pressing piece, and the second pressing driving mechanism is used for providing a force which vertically downwards presses the covering type pressing piece for the pressing piece.

According to the utility model discloses friction stir welding frock has following beneficial effect at least: when the tool is used, a workpiece to be welded is placed on the workpiece bearing table, then the workpiece is pressed on the workpiece bearing table through the covering type pressing piece and the first pressing driving mechanism, and then downward pressure is further applied to the covering type pressing piece through the pressurizing piece and the second pressing driving mechanism, so that the workpiece is further pressed on the workpiece bearing table. Foretell friction stir welding frock owing to adopted the pressurized structure of secondary, and the work piece can be compressed tightly in the work piece plummer more firmly, corrects its deformation more easily, and the flatness improves the effect better to promote product quality.

According to the utility model discloses a some embodiments, first actuating mechanism configuration of pushing down is configured for can for the left and right sides of overlay type press part provides the overdraft respectively, the pressure is provided with two sets ofly, two sets of the pressure is used for respectively with both sides butt cooperation around the overlay type press part.

According to the utility model discloses a some embodiments, first actuating mechanism pushes down includes the first up-and-down drive that sets up in pairs, two in pairs the first up-and-down drive respectively with the left and right sides of overlay type press part is connected, first up-and-down drive is used for the drive overlay type press part moves from top to bottom.

According to some embodiments of the present invention, the first up-down driver is provided with at least two pairs and arranged along the front-rear direction.

According to some embodiments of the present invention, in each of the pressurizing members, at least two pressurizing members are provided and arranged in a left-right direction; the second pressing driving mechanism comprises second upper and lower drivers which are connected with the pressurizing pieces in a one-to-one correspondence mode, and the second upper and lower drivers are used for driving the pressurizing pieces to move up and down.

According to some embodiments of the utility model, main closing device can be relative along linear direction the base removes, the overlay type press part can move to the upside of work piece plummer and follow the upside of work piece plummer is putd aside.

According to some embodiments of the utility model, the overlay type press part includes the first layering that sets up in pairs, in pairs the first layering sets up side by side, two in pairs with the welding route hole of stepping down being formed with between the first layering.

According to some embodiments of the utility model, two in pairs connect through the second layering between the tip of first layering, the second layering perpendicular to first layering, add the pressure member be used for with the cooperation of second layering butt one-to-one.

According to some embodiments of the utility model, the work piece plummer with the second layering is provided with locating pin and locating pin hole correspondingly, overlay type press part press to during the work piece plummer, the locating pin can with the cooperation of pegging graft of locating pin hole.

According to some embodiments of the invention, the cover press may be detachably arranged.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

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

FIG. 1 is a schematic perspective view of an embodiment of the present invention before a workpiece to be welded is placed;

FIG. 2 is a schematic perspective view of the embodiment of the present invention with a workpiece to be welded placed thereon;

FIG. 3 is a schematic perspective view illustrating the pressing of a workpiece onto a workpiece stage according to an embodiment of the present invention;

fig. 4 is a top view of an overlay press according to an embodiment of the present invention;

fig. 5 is a schematic perspective view of a workpiece supporting table according to an embodiment of the present invention;

fig. 6 is a schematic perspective view of the embodiment of the present invention after the main pressing device and the workpiece supporting platform are removed.

Reference numerals:

a workpiece 1;

the device comprises a base 100, a workpiece bearing table 110, a positioning pin 111, a yielding hole 112 and a guide rail 120;

the welding device comprises a covering type pressing part 210, a first pressing strip 211, a welding path abdicating hole 212, a connecting part 213, a second pressing strip 214, a positioning pin hole 2141 and a first upper and lower driver 220;

a pressing member 310, a second up-down driver 320;

a positioning block 410, a pushing mechanism 420;

a first clamping mechanism 510, a second clamping mechanism 520;

ejection cylinder 610.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the directional descriptions, such as the directions or positional relationships indicated by upper, lower, front, rear, left, right, etc., are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but not for indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If there is a description of first and second for the purpose of distinguishing technical features only, this is not to be understood as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1 to 3, a friction stir welding tool includes: base 100, main closing device and secondary closing device. The base 100 is provided with a workpiece bearing platform 110, the main pressing device is arranged on the base 100, the main pressing device comprises a covering type pressing piece 210 and a first pressing driving mechanism, the covering type pressing piece 210 can move in a vertical translation mode relative to the base 100, the covering type pressing piece 210 is used for pressing a workpiece arranged on the workpiece bearing platform 110, and the first pressing driving mechanism is used for providing pressing force for the covering type pressing piece 210. The secondary pressing device is disposed on the base 100, and includes a pressing member 310 and a second pressing driving mechanism, the pressing member 310 is configured to abut against the covering pressing member 210, and the second pressing driving mechanism is configured to provide a force, which vertically presses the covering pressing member 210 downward, to the pressing member 310.

When the tool is used, the workpiece 1 to be welded is placed on the workpiece bearing table 110, then the workpiece 1 is pressed against the workpiece bearing table 110 through the covering pressing piece 210 and the first pressing driving mechanism, and then downward pressure is further applied to the covering pressing piece 210 through the pressing piece 310 and the second pressing driving mechanism, so that the workpiece 1 is further pressed against the workpiece bearing table 110. The friction stir welding tool adopts a secondary pressurizing structure, so that the workpiece 1 can be tightly pressed on the workpiece bearing table 110, the deformation of the workpiece is corrected more easily, the flatness improving effect is better, and the product quality is improved.

In an embodiment, the first pressing driving mechanism is configured to provide pressing force to the left and right sides of the covering pressing member 210, and two sets of pressing members 310 are provided, and the two sets of pressing members 310 are respectively configured to be in abutting engagement with the front and rear sides of the covering pressing member 210. By adopting the structure, the covering type pressing piece 210 is applied with downward pressure on the peripheral sides, so that the workpiece can be pressed more uniformly, each part of the workpiece can be attached to the workpiece bearing table 110 more tightly, the deformation can be corrected better, and the improvement effect on the flatness of the product is better.

In an embodiment, the first downward-pressing driving mechanism includes a pair of first upward and downward drivers 220, the pair of first upward and downward drivers 220 are respectively connected to the left and right sides of the covering pressing member 210, and the first upward and downward drivers 220 are configured to drive the covering pressing member 210 to move upward and downward. By adopting the above structure, the left and right sides of the covering type pressing member 210 are independently provided with the first up-down drivers 220 to provide downward pressure, and the downward pressure is strong and uniform. In an embodiment, the first up-down driver 220 may specifically employ an air cylinder, an electric cylinder, or a hydraulic cylinder, etc. In the embodiment, the first up-down drivers 220 are provided in two pairs and arranged in the front-rear direction, but may be provided in other numbers, for example, one pair or more than two pairs, as needed. When the number of the first up-down drivers 220 is two pairs or more, the effect of pressing the workpiece is better.

In the embodiment, in each set of the pressing members 310, six pressing members 310 are provided and arranged in the left-right direction so as to be pressed uniformly. It is conceivable that the number of the pressing members 310 in each group may be specifically configured according to the actual situation, and at least one pressing member 310 in each group is allowed to be provided.

In an embodiment, the second downward-pressing driving mechanism includes second upper and lower drivers 320 connected to the pressing members 310 in a one-to-one correspondence, and the second upper and lower drivers 320 are configured to drive the pressing members 310 to move up and down. By providing the separate second up-down drivers 320 for the respective pressing members 310, the down-pressure chamber, the down-pressure is uniform. In an embodiment, the second up-down driver 320 may specifically adopt an air cylinder, an electric cylinder, a hydraulic cylinder, or the like.

In an embodiment, the main pressing device is movable in a linear direction relative to the base 100, and the cover press 210 can be moved to and from the upper side of the workpiece carrier table 110. By adopting the structure, the workpiece to be welded can be conveniently placed and the welded workpiece can be conveniently taken away. In an embodiment, the base 100 is provided with two parallel rails 120 spaced apart from each other, and the main pressing device is disposed on the two rails 120 so as to be movable. Specifically, in the embodiment, the first upper and lower drivers 220 on the same side are connected through a connecting rod, and the lower end of the first upper and lower drivers 220 is provided with a roller, and the roller is disposed on the guide rail 120, so that the first upper and lower drivers 220 can move along the guide rail 120 and drive the cover press 210 to move synchronously. It is envisioned that the main compression unit may be moved relative to the base 100 by other structures; there are many structures in the art for achieving movement of one component relative to another, and those skilled in the art can configure the structure according to actual situations.

Referring to fig. 4, in an embodiment, the covering press member 210 includes first pressing bars 211 arranged in pairs, the first pressing bars 211 are arranged side by side at intervals, and a welding path avoiding hole 212 is formed between the first pressing bars 211 in the pair. The first pressing strip 211 can be pressed against the workpiece 1 along the length direction thereof, so that the workpiece 1 is pressed in a covering manner. The weld path relief hole 212 allows the weld head to extend into and move along the joint between the workpieces 1.

In the embodiment, the first pressing strips 211 are arranged in six pairs and arranged in a row, and each pair of the first pressing strips 211 are connected by a connecting portion 213. It is conceivable that the number of the first pressing beads 211 is not limited to the above-described embodiment, and may be matched according to the number of the splices to be welded between the workpieces 1.

In the embodiment, the ends of the two paired first pressing strips 211 are connected by the second pressing strip 214, the second pressing strip 214 is perpendicular to the first pressing strips 211, and the pressing members 310 are used for being in one-to-one abutting fit with the second pressing strips 214. With the structure, the force application position of the pressing member 310 is on the second pressing strip 214, so that the downward pressure can be more uniformly transmitted to the first pressing strip 211, and the workpiece can be pressed better.

Referring to fig. 4 and 5, in the embodiment, the workpiece carrier table 110 and the second pressing bar 214 are respectively provided with the positioning pin 111 and the positioning pin hole 2141, and when the covering pressing member 210 is pressed against the workpiece carrier table 110, the positioning pin 111 can be inserted into and fitted with the positioning pin hole 2141. By adopting the structure, the covering type pressing piece 210 can be positioned, and the workpiece can be more accurately and stably pressed. In the embodiment, the positioning pins 111 are specifically disposed on the workpiece carrier 110, and the positioning pin holes 2141 are disposed on the second bead 214, but it is also conceivable that the positioning pins 111 may be disposed on the second bead 214, and the positioning pin holes 2141 may be disposed on the workpiece carrier 110.

In the embodiment, the covering pressing member 210 is detachably provided, so that different covering pressing members 210 can be replaced according to the actually welded workpiece 1, and the adaptability is high.

In an embodiment, the friction stir welding apparatus further includes a workpiece positioning device, a workpiece fixing device, and a workpiece ejecting device, the workpiece positioning device, the workpiece fixing device, and the workpiece ejecting device are disposed on the base 100, the workpiece positioning device is used for positioning the workpiece 1 placed on the workpiece bearing table 110, the workpiece fixing device is used for fixing the workpiece 1 placed on the workpiece bearing table 110, and the workpiece ejecting device is used for ejecting the workpiece 1 that is welded.

Referring to fig. 5 to 6, in detail, the workpiece positioning device includes a positioning block 410 and a pushing mechanism 420, the positioning block 410 is disposed on one side of the workpiece supporting stage 110, and the pushing mechanism 420 is disposed on the other side of the workpiece supporting stage 110 and is used for pushing the workpiece 1 placed on the workpiece supporting stage 110 toward the positioning block 410. The pushing mechanism 420 comprises a pushing cylinder and a pushing block, and the pushing block is arranged on a piston rod of the pushing cylinder. When the workpiece 1 is placed on the workpiece bearing table 110, one end of the workpiece 1 may be abutted against the positioning block 410, and then the workpiece 1 is abutted against the positioning block 410 by the urging mechanism 420, so as to achieve positioning.

Specifically, the workpiece fixing device includes a first clamping mechanism 510 and two second clamping mechanisms 520, the first clamping mechanism 510 is used for clamping all the side-by-side workpieces 1 to be welded, and the two second clamping mechanisms 520 are respectively used for clamping and fixing the workpieces 1 to be welded on two sides. The first clamping mechanism 510 includes paired first clamping cylinders, piston rods of the first clamping cylinders are provided with first clamping portions, the paired first clamping cylinders are located on two sides of the workpiece bearing table, and piston rods of the two first clamping cylinders can move in opposite directions or directions, so that the workpiece 1 is clamped or loosened. The second clamping mechanism 520 includes a pair of second clamping portions, at least one of which is driven by a second clamping cylinder so that the pair of second clamping portions can be moved toward or away from each other to clamp or loosen the workpiece 1.

Specifically, the workpiece ejection device includes a plurality of ejection cylinders 610, the ejection cylinders 610 are located at the lower side of the workpiece bearing table 110, a piston rod of the ejection cylinder 610 is provided with an ejection portion, and the workpiece bearing table 110 is provided with an abdicating hole 112 for the ejection portion to penetrate through.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. The utility model provides a friction stir welding frock which characterized in that includes:

a base (100) provided with a workpiece bearing table (110);

the main pressing device is arranged on the base (100) and comprises a covering type pressing piece (210) and a first pressing driving mechanism, the covering type pressing piece (210) can move up and down in a translation mode relative to the base (100), the covering type pressing piece (210) is used for pressing a workpiece arranged on the workpiece bearing table (110), and the first pressing driving mechanism is used for providing pressing force for the covering type pressing piece (210);

the secondary pressing device is arranged on the base (100) and comprises a pressing piece (310) and a second pressing driving mechanism, the pressing piece (310) is used for being abutted against the covering type pressing piece (210), and the second pressing driving mechanism is used for providing a force which vertically downwards presses the covering type pressing piece (210) for the pressing piece (310).

2. The friction stir welding tool according to claim 1, wherein: the first downward pressing driving mechanism is configured to provide downward pressing force to the left side and the right side of the covering type pressing piece (210) respectively, two groups of pressing pieces (310) are arranged, and the two groups of pressing pieces (310) are used for being in butt fit with the front side and the rear side of the covering type pressing piece (210) respectively.

3. The friction stir welding tool according to claim 2, wherein: the first downward pressing driving mechanism comprises first upper and lower drivers (220) which are arranged in pairs, the two first upper and lower drivers (220) in pairs are respectively connected with the left side and the right side of the covering type pressing piece (210), and the first upper and lower drivers (220) are used for driving the covering type pressing piece (210) to move up and down.

4. The friction stir welding tool according to claim 3, wherein: the first up-down drivers (220) are provided in at least two pairs and arranged in a front-rear direction.

5. The friction stir welding tool according to claim 2, wherein: in each group of the pressurizing pieces (310), at least two pressurizing pieces (310) are arranged and arranged along the left-right direction; the second pressing driving mechanism comprises second upper and lower drivers (320) which are connected with the pressing pieces (310) in a one-to-one correspondence mode, and the second upper and lower drivers (320) are used for driving the pressing pieces (310) to move up and down.

6. The friction stir welding tool according to claim 1, wherein: the main pressing device can move relative to the base (100) along a straight line direction, and the covering pressing piece (210) can move to the upper side of the workpiece bearing platform (110) and move away from the upper side of the workpiece bearing platform (110).

7. The friction stir welding tool according to claim 1, wherein: the covering type press piece (210) comprises first pressing strips (211) arranged in pairs, the first pressing strips (211) in pairs are arranged side by side at intervals, and a welding path yielding hole (212) is formed between every two first pressing strips (211) in pairs.

8. The friction stir welding tool according to claim 7, wherein: the ends of the two paired first pressing strips (211) are connected through a second pressing strip (214), the second pressing strip (214) is perpendicular to the first pressing strips (211), and the pressing pieces (310) are in one-to-one corresponding abutting fit with the second pressing strips (214).

9. The friction stir welding tool according to claim 8, wherein: the workpiece bearing table (110) and the second pressing strip (214) are correspondingly provided with a positioning pin (111) and a positioning pin hole (2141), and when the covering type pressing piece (210) presses the workpiece bearing table (110), the positioning pin (111) can be in inserted connection with the positioning pin hole (2141).

10. The friction stir welding tool according to claim 1, wherein: the covering type pressing piece (210) is detachably arranged.