Welding tool dismounting device for backfill friction stir spot welding

Abstract

The utility model belongs to the technical field of friction stir spot welding, and particularly relates to a welding tool dismounting device for backfill friction stir spot welding. The dismounting device comprises a force applying mechanism for applying thrust to the stirring sleeve welding tool and a pulling mechanism for applying pulling force to the stirring pin welding tool, and the thrust direction of the force applying mechanism is opposite to the pulling direction of the pulling mechanism. By arranging the pulling mechanism and the force application mechanism which are opposite in force application direction, the friction stir spot welding tool can be quickly disassembled, a stirring needle / stirring sleeve can be conveniently replaced, and the disassembling efficiency of the welding tool is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of friction stir spot welding, especially relates to a backfilling friction stir spot welding tool dismounting device. BACKGROUND

[0002] The backfilling friction stir spot welding is a new type of solid-phase welding technology, which re-presses the hot plastic material generated in the friction process into the welding spot through the relative movement of the stirring sleeve and the stirring needle, eliminates the spoon hole defects generated in the traditional friction stir spot welding process, increases the effective load area of the joint, and thus improves the mechanical properties of the joint, and is widely applied to the aluminum alloy connection field.

[0003] At present, the assembly gap between the stirring needle and the stirring sleeve of the backfilling friction stir spot welding tool is filled with aluminum material generated during work after welding, so that the stirring needle and the stirring sleeve are difficult to dismount. When the stirring needle or the stirring sleeve needs to be replaced, the existing dismounting method is to immerse the tool in lye to corrode the aluminum material, and the tool can be dismounted only after the aluminum material is corroded. This process often takes 1-3 days, which not only increases the cost, but also seriously affects the production efficiency. UTILITY MODEL CONTENTS

[0004] In order to overcome the defects in the prior art, the utility model provides a backfilling friction stir spot welding tool dismounting device. The dismounting efficiency of the utility model dismounting device is high.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A backfilling friction stir spot welding tool dismounting device is used for dismounting a stirring sleeve tool and a stirring needle tool, the stirring needle tool is sleeved in the middle part of the stirring sleeve tool, the dismounting device comprises a force applying mechanism for applying a pushing force to the stirring sleeve tool and a pulling mechanism for applying a pulling force to the stirring needle tool, and the pushing force direction of the force applying mechanism is opposite to the pulling force direction of the pulling mechanism.

[0007] Preferably, the force applying mechanism comprises a power source, a stirring sleeve support and a top cylinder which are connected in sequence, and the shape of the end of the top cylinder away from the stirring sleeve support is matched with the stirring sleeve tool.

[0008] Preferably, the pulling mechanism comprises a stirring needle support, a guide column and a shackle which are arranged in sequence from top to bottom, and the shackle is connected with the stirring needle tool through a pin.

[0009] Preferably, the stirring sleeve support is in inverted "U" shape, the closed end of the stirring sleeve support is connected with the output end of the power source, the open end of the stirring sleeve support is fixedly connected with the top cylinder through a top cylinder mounting plate, and the top cylinder is used for pushing the stirring sleeve tool.

[0010] Preferably, the stirring needle support is in the shape of "U", the open end of the stirring needle support is fixed on the mounting frame, the closed end of the stirring needle support is provided with a through hole, and the top end of the guide column is hung on the stirring needle support through the through hole.

[0011] Preferably, the other end of the guide column is connected with a lifting ring, and the shackle is hung on the lifting ring.

[0012] Preferably, the mounting frame comprises a bottom plate and a bottom plate support fixed at the bottom of the bottom plate, the power source is installed on the bottom plate through a cushion block, the output end of the power source is transmissionally connected with the stirring sleeve support through the bottom plate, and the stirring needle support is fixedly connected with the bottom plate.

[0013] Preferably, the stirring sleeve support and the stirring needle support are arranged in a cross shape.

[0014] Preferably, the power source is a knock-off cylinder.

[0015] Preferably, the stirring needle welding tool and the shackle are both provided with through holes for the insertion of the pin.

[0016] The utility model discloses the advantages are:

[0017] (1) the utility model discloses a pulling mechanism and force applying mechanism that the force applying direction is opposite can be quickly disassembled stirring friction spot welding tool, and the replacement of stirring needle / stirring sleeve is convenient, and the disassembly efficiency of the tool is greatly improved.

[0018] (2) the stirring sleeve support and the stirring needle support of the utility model are arranged in a cross shape, so that the structure is more simple.

[0019] (3) the force applying mechanism and the pulling mechanism of the utility model also have the characteristics of simple structure, convenient operation and good function. DRAWINGS

[0020] Figure 1 It is the whole structure schematic diagram of the utility model.

[0021] Figure 2 It is the front structure schematic diagram of the utility model.

[0022] Figure 3 It is Figure 2 the A-A section structure schematic diagram of.

[0023] Figure 4 It is the stirring sleeve support structure schematic diagram of the utility model.

[0024] Figure 5 It is Figure 4 the B-B section structure schematic diagram of.

[0025] Figure 6 It is the stirring needle support structure schematic diagram of the utility model.

[0026] Figure 7 C-C profile structure diagram. Figure 6

[0027] Figure 8 The utility model discloses a bottom plate structure diagram.

[0028] The meaning of the symbol in the figure is as follows:

[0029] 1 - stirring sleeve welding tool, 2 - stirring needle welding tool, 3 - stirring sleeve support, 4 - force applying mechanism, 5 - pulling mechanism, 6 - stirring needle support, 7 - top cylinder mounting plate, 8 - top cylinder, 9 - mounting frame, 10 - bottom plate support, 11 - cushion block, 12 - bottom plate, 13 - guide column, 14 - lifting ring, 15 - unloading buckle, 16 - perforation, 17 - pin. DETAILED DESCRIPTION

[0030] Figures 1-3 The utility model discloses an external structure diagram and internal section view, containing stirring sleeve welding tool 1 and stirring needle welding tool 2, force applying mechanism 4 and pulling mechanism 5;Stirring needle welding tool 2 is set in the middle part of stirring sleeve welding tool 1. Force applying mechanism 4 includes the power source ( can be the sword cylinder) that connects from top to bottom in proper order, stirring sleeve support 3 and top cylinder 8, and the shape of the end of top cylinder 8 away from stirring sleeve support 3 is adapted to stirring sleeve welding tool 1. Pulling mechanism 5 includes stirring needle support 6, guide column 13 and unloading buckle 15 that are arranged in sequence from top to bottom, and unloading buckle 15 is connected with stirring needle welding tool 2 through pin 17.

[0031] Figures 4-5 It is external structure diagram and internal section view after deleting pulling mechanism 5, and bottom plate 12 and bottom plate support 10 are combined into mounting frame 9, and mounting frame 9 can be installed on a fixed plane at will, and is used for fixing the whole device. The sword cylinder is installed on bottom plate 12 through cushion block 11, and stirring sleeve support 3 is inverted " U " character shape, and the closed end of stirring sleeve support 3 is connected with the piston rod of the sword cylinder, and the other end is connected with top cylinder mounting plate 7, and the other side of top cylinder mounting plate 7 is connected with top cylinder 8 again, and the bottom of top cylinder 8 can be in full contact with stirring sleeve welding tool 1, so that top cylinder 8 can exert a downward thrust to stirring sleeve welding tool 1 when the sword cylinder works.

[0032] The cushion block 11 can reduce the vibration force influence generated when the power source works, and the damping effect of the device is improved.

[0033] Figures 6-7 ​For the external structure diagram and internal cross-sectional view after the removal of the stirring sleeve support 3, the top cylinder mounting plate 7 and the top cylinder 8, the stirring needle support 6, the guide column 13, the lifting ring 14, the shackle 15, the hole pin 17, the stirring sleeve welding tool 1 and the stirring needle welding tool 2 are contained, the through hole on the hole pin 17 is used for penetrating a pin, which can prevent the hole pin 17 from falling when not installed in place; the stirring needle support 6 is in a "U" shape, the stirring sleeve support 3 and the stirring needle support 6 are arranged in a cross shape, the open end of the stirring needle support 6 is fixed on the bottom plate 12, a through hole 16 is formed in the middle of the closed end of the stirring needle support 6, the top of the guide column 13 penetrates through the through hole 16 and is hung on the stirring needle support 6; the bottom of the guide column 13 is connected with the lifting ring 14, the shackle 15 is hung on the lifting ring 14, and the stirring needle welding tool 2 is also provided with a through hole, the hole pin 17 is inserted into the through hole and connected with the through hole on the shackle 15, and then the stirring needle welding tool 2 is pulled. The pulling direction of the pulling mechanism 5 is opposite to the force applying direction of the force applying mechanism 4, the pulling mechanism 5 can pull the stirring needle welding tool 2, and the stirring needle welding tool 2 is prevented from moving with the stirring sleeve welding tool 1 when the stirring sleeve welding tool 1 moves.

[0034] Further, the output distance of the force applying mechanism 4 is greater than the connection length of the stirring sleeve welding tool 1 and the stirring needle welding tool 2, which ensures that the stirring sleeve welding tool 1 can be smoothly pushed out when the force applying mechanism 4 works, so that the stirring sleeve welding tool 1 and the stirring needle welding tool 2 are separated.

[0035] The working process of the device will be described in detail below with reference to the accompanying drawings in the embodiments.

[0036] When the friction stir spot welding tool is used to weld aluminum, the tool needs to be disassembled:

[0037] ①The hole pin 17 is removed, the shackle 15 is placed in the stirring needle welding tool 2, and then the hole pin 17 is inserted into the through hole on the shackle 15 and the stirring needle welding tool 2, thereby completing the installation of the aluminum welding tool;

[0038] ②The punch cylinder is driven to move the piston rod of the punch cylinder downward, the piston rod pushes the stirring sleeve support 3 downward, and then pushes the top cylinder 8 connected with the stirring sleeve support 3, and the top cylinder 8 pushes the stirring sleeve welding tool 1 to move downward; when the stirring sleeve welding tool 1 moves downward, the stirring needle welding tool 2 is fixed on the mounting frame 9 by the pulling mechanism 5, so the stirring needle welding tool 2 does not move downward, and then the stirring sleeve welding tool 1 and the stirring needle welding tool 2 are separated.

[0039] The above is only a preferred embodiment of the present application, and is not used to limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A backfill friction stir spot welding tool dismounting device for dismounting a stir cup tool (1) and a stir pin tool (2) which is sleeved in the middle of the stir cup tool (1), characterized in that, The dismounting device comprises a force applying mechanism (4) for applying pushing force to the stirring sleeve welding tool (1) and a pulling mechanism (5) for applying pulling force to the stirring needle welding tool (2), the pushing force direction of the force applying mechanism (4) is opposite to the pulling force direction of the pulling mechanism (5).

2. A backfill friction stir spot welding tool dismounting device according to claim 1, characterized in that: The force applying mechanism (4) comprises a power source, a stirring sleeve support (3) and a top cylinder (8) connected in sequence, the shape of the top cylinder (8) at the end away from the stirring sleeve support (3) is matched with the stirring sleeve welding tool (1).

3. A backfill friction stir spot welding tool dismounting device according to claim 2, characterized in that: The pulling mechanism (5) comprises a stirring needle support (6), a guide column (13) and a shackle (15) arranged in sequence from top to bottom, the shackle (15) is connected with the stirring needle welding tool (2) through a pin (17).

4. The backfill friction stir spot welding tool dismounting device according to claim 2, characterized in that: The stirring sleeve support (3) is in inverted "U" shape, the closed end of the stirring sleeve support (3) is connected with the output end of the power source, the open end of the stirring sleeve support (3) is fixedly connected with the top cylinder (8) through a top cylinder mounting plate (7), and the top cylinder (8) is used for pushing the stirring sleeve welding tool (1).

5. The backfill friction stir spot welding tool dismounting device according to claim 3, characterized in that: The stirring needle support (6) is in "U" shape, the open end of the stirring needle support (6) is fixed on a mounting bracket (9), the closed end of the stirring needle support (6) is provided with a through hole (16), and the top end of the guide column (13) is hung on the stirring needle support (6) through the through hole (16).

6. A backfill friction stir spot welding tool dismounting device according to claim 5, characterized in that: The other end of the guide column (13) is connected with a lifting ring (14), and the shackle (15) is hung on the lifting ring (14).

7. The backfill friction stir spot welding tool dismounting device according to claim 5, characterized in that: The mounting bracket (9) comprises a bottom plate (12) and a bottom plate support (10) fixed at the bottom of the bottom plate (12), the power source is mounted on the bottom plate (12) through a cushion block (11), the output end of the power source is transmissionally connected with the stirring sleeve support (3) through the bottom plate (12), and the stirring needle support (6) is fixedly connected with the bottom plate (12).

8. The backfill friction stir spot welding tool dismounting device according to claim 3, characterized in that: The stirring sleeve support (3) and the stirring needle support (6) are arranged in cross shape.

9. A backfill friction stir spot welding tool dismounting device according to claim 2 or 7, characterized in that: The power source is a tool pulling cylinder.

10. The backfill friction stir spot welding tool dismounting device according to claim 3, characterized in that: The stirring needle welding tool (2) and the shackle (15) are both provided with through holes for the pin (17) to insert.

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