Quick connecting assembly for welding head of friction stir welding machine

Abstract

The utility model relates to the technical field of friction stir welding machine equipment, in particular to a quick connecting assembly for a welding head of a friction stir welding machine, the welding head is coaxially inserted into a friction welding main shaft, and the quick connecting assembly comprises a fixing block, a mounting cylinder, a cylinder cover, a locking rod, a sliding block and a connecting rod; the mounting cylinder is fixedly connected to the fixing block, the cylinder cover is connected to a cylinder opening of the mounting cylinder, the locking rod penetrates through the mounting cylinder, the mounting cylinder, the fixing block and the friction welding spindle are each provided with a through hole allowing the locking rod to penetrate through, the welding head is provided with a locking hole allowing the locking rod to be inserted in, and the sliding block is connected to the end, located in the mounting cylinder, of the locking rod. The connecting rods are connected to the sliding blocks, a sliding groove is formed in the mounting cylinder, and an adjusting assembly used for driving the locking rod to move is arranged between the two connecting rods. The friction stir welding head has the effects that the mode of fixing the friction stir welding head through screws is improved, and the efficiency of dismounting and replacing the friction stir welding head is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of friction stir welding machine equipment, especially to a quick connecting assembly for the welding head of a friction stir welding machine. BACKGROUND

[0002] Friction stir welding refers to the use of heat generated by the friction between a high-speed rotating welding tool and a workpiece to locally soften the plastic material, and when the welding tool moves forward along the welding interface, the plasticized material flows from the front to the rear under the rotating friction force of the welding tool, and forms a dense solid-phase welding seam under the extrusion of the welding tool.

[0003] The existing Chinese patent with publication number CN221603482U discloses a new type of friction stir welding device, which includes a friction stir welding machine spindle installation turntable, a friction stir welding machine spindle angle adjustment bolt is arranged on the side of the friction stir welding machine spindle installation turntable, a friction stir welding machine spindle box is fixedly installed on the friction stir welding machine spindle installation turntable, a friction stir welding machine spindle is arranged in the friction stir welding machine spindle box, and a friction stir welding head is arranged at the end of the friction stir welding machine spindle.

[0004] According to the above related technology, the inventors believe that the following problems exist: the above-mentioned device is provided with a plurality of adjusting and replacing screws in the circumferential direction of the friction stir welding machine spindle, and the friction stir welding head is fixed on the friction stir welding machine spindle by rotating the plurality of adjusting and replacing screws with an external tool, which causes the operator to operate complicatedly, time-consumingly and laboriously when disassembling and replacing the friction stir welding head. UTILITY MODEL CONTENTS

[0005] In order to improve the way of fixing the friction stir welding head by screws and improve the efficiency of disassembling and replacing the friction stir welding head, the present application provides a quick connecting assembly for the welding head of a friction stir welding machine.

[0006] The quick connecting assembly for the welding head of a friction stir welding machine provided by the present application adopts the following technical solution:

[0007] The utility model provides a kind of quick connection assembly of friction welding machine's welding head, and welding head is coaxially inserted in friction welding spindle, and friction welding spindle is provided with the insertion hole for the insertion of welding head, and it includes fixed block, installation cylinder, cylinder cover, locking rod, sliding block and connecting rod, the fixed block is fixedly connected on friction welding spindle, the fixed block is equipped with one on the opposite sides of friction welding spindle respectively, the installation cylinder is fixedly connected on fixed block, the installation cylinder is equipped with one on two fixed blocks respectively, the installation cylinder is arranged along the direction perpendicular to friction welding spindle, the cylinder cover is connected at the cylinder mouth of installation cylinder, the locking rod is inserted in installation cylinder, the through hole for the insertion of locking rod is formed in installation cylinder, fixed block and friction welding spindle, the locking hole for the insertion of locking rod is formed in welding head, the sliding block is connected at the end of locking rod in installation cylinder, the side wall of sliding block is slidably attached to the inner wall of installation cylinder, the connecting rod is connected to sliding block, the sliding slot for the insertion and movement of connecting rod is formed in installation cylinder, and the adjusting assembly for driving locking rod to move is arranged between two connecting rods.

[0008] Preferably, the adjusting assembly includes rotating block, threaded rod and nut base, the nut base is fixedly connected to the end of connecting rod, the nut base is equipped with one on two connecting rods respectively, the threaded rod is fixedly connected to rotating block, the threaded rod is equipped with one on the opposite sides of rotating block respectively, the axis of two threaded rods is arranged in line, the threaded grooves of two threaded rods are reversely arranged, and the threaded rod is threadedly connected in nut base.

[0009] Preferably, the threaded rod is connected with a limiting nut, and the limiting nut is located at the end of the threaded rod inserted in the nut base.

[0010] Preferably, a pushing spring is placed in the installation cylinder, one end of the pushing spring abuts against the cylinder cover, and the other end abuts against the sliding block, and the pushing spring is always in a compressed state.

[0011] Preferably, the welding head includes an insertion part, the insertion part is arranged in a column type, the side wall of the insertion part includes a circular arc surface and a limiting plane, the circular arc surface is arranged on the opposite sides of the insertion part, and the limiting plane is arranged on the other opposite sides of the insertion part.

[0012] Preferably, the locking rod is provided with a rounded corner, and the rounded corner is located at the end of the locking rod inserted in the locking hole.

[0013] In summary, the present application has the following beneficial technical effects:

[0014] The utility model provides a kind of quick connecting assembly for the welding head of friction stir welding machine, including fixed block, installation cylinder, cylinder cover, locking rod, sliding block and connecting rod, and setting adjusting assembly between two connecting rods, when disassembling welding head, only need to drive two locking rods to move and exit the locking hole of welding head by the simple operation of adjusting assembly, welding head can be directly extracted, when installing welding head, welding head is inserted into friction stir welding spindle, then by adjusting assembly drive two locking rods to move and insert into the locking hole of welding head, welding head can be fixed, to reach the effect that the mode of improving by screw fixed friction stir welding head, improve the efficiency of disassembling and replacing friction stir welding head. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the structure schematic diagram of quick connecting assembly for the welding head of friction stir welding machine in the embodiment of the application;

[0016] Figure 2 It is the schematic diagram for showing the internal structure of installation cylinder in the embodiment of the application;

[0017] Figure 3 It is the schematic diagram for showing welding head in the embodiment of the application.

[0018] Mark explanation: 1, welding head;2, friction stir welding spindle;3, fixed block;4, installation cylinder;41, push spring;5, cylinder cover;6, locking rod;7, sliding block;8, connecting rod;9, adjusting assembly;91, rotating block;92, threaded rod;921, limit nut;93, nut seat. DETAILED DESCRIPTION

[0019] In order to make the personnel of the prior art better understand the utility model scheme, below will be combined with the drawings to the scheme in the embodiment of the utility model is clearly and completely described, obviously, the described embodiment is only a part of the embodiment of the utility model, not all, based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without doing creative work premise, it should belong to the scope of protection of the utility model.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation or specific orientation structure and operation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly, 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 a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0021] This application discloses a quick-connect assembly for the welding head of a friction stir welding machine. (Refer to...) Figure 1 , Figure 2 and Figure 3 The welding head of the friction stir welding machine uses a quick-connect assembly. The welding head 1 is coaxially inserted into the friction welding spindle 2. The friction welding spindle 2 has an insertion hole for the welding head 1 to be inserted. The assembly includes a fixing block 3, a mounting cylinder 4, a cylinder cover 5, a locking rod 6, a slider 7, and a connecting rod 8. The fixing block 3 is fixedly connected to the friction welding spindle 2, and there is one fixing block 3 on each of the two opposite sides of the friction welding spindle 2. The mounting cylinder 4 is fixedly connected to the fixing block 3, and there is one mounting cylinder 4 on each of the two fixing blocks 3. The mounting cylinder 4 is perpendicular to the friction welding spindle 2. The cylinder cover 5 is connected to the opening of the mounting cylinder 4. The locking rod 6 passes through the mounting cylinder 4. The mounting cylinder 4, the fixing block 3, and the friction welding spindle 2 are all provided with through holes for the locking rod 6 to pass through. The welding head 1 is provided with a locking hole for the locking rod 6 to be inserted. The slider 7 is connected to the end of the locking rod 6 located inside the mounting cylinder 4. The side wall of the slider 7 slides against the inner wall of the mounting cylinder 4. The connecting rod 8 is connected to the slider 7. The mounting cylinder 4 is provided with a groove for the connecting rod 8 to pass through and move. An adjustment component 9 for driving the locking rod 6 to move is provided between the two connecting rods 8.

[0022] The adjusting assembly 9 includes a rotating block 91, a threaded rod 92, and a nut seat 93. The nut seat 93 is fixedly connected to the end of the connecting rod 8, and there is one nut seat 93 on each of the two connecting rods 8. The threaded rod 92 is fixedly connected to the rotating block 91, and there is one threaded rod 92 on each of the opposite sides of the rotating block 91. The axes of the two threaded rods 92 are collinear, and the thread grooves of the two threaded rods 92 are arranged in opposite directions. The threaded rods 92 are threadedly connected to the nut seat 93. When adjusting the movement of the two locking rods 6, the operator rotates the rotating block 91 in the forward or reverse direction to make the threaded rod 92 rotate. Since the connecting rod 8 slides against the groove, the nut seat 93 on the connecting rod 8 cannot rotate. Therefore, the nut seat 93 can move along the length direction of the threaded rod 92. Since the thread grooves of the two threaded rods 92 are arranged in opposite directions, the two nut seats 93 can move closer and further away from each other. The locking rods 6 are moved by the connecting rod 8 and the slider 7.

[0023] A limiting nut 921 is connected to the threaded rod 92. The limiting nut 921 is located at the end of the threaded rod 92 that passes through the nut seat 93. By setting the limiting nut 921, the threaded rod 92 is prevented from disengaging from the nut seat 93, thus ensuring the stability of the structure.

[0024] A push spring 41 is placed inside the mounting cylinder 4. One end of the push spring 41 abuts against the cylinder cover 5, and the other end abuts against the slider 7. The push spring 41 is always in a compressed state. By setting the push spring 41, the push spring 41 always has a thrust on the slider 7 to push the slider 7 toward the welding head 1. On the one hand, this thrust can ensure that the slider 7 and the locking rod 6 will not move due to centrifugal force during operation, thus ensuring the stability between the locking rod 6 and the welding head 1. On the other hand, this thrust acts between the threaded rod 92 and the nut seat 93, which can increase the friction between the threaded rod 92 and the nut seat 93 to ensure the stability of the structure.

[0025] The welding head 1 includes a plug-in portion, which is cylindrical in shape. The side wall of the plug-in portion includes an arc surface and a limiting plane. The arc surface is located on opposite sides of the plug-in portion, and the limiting plane is located on the other opposite sides of the plug-in portion. This arrangement ensures that the welding head 1 will not rotate relative to the friction welding spindle 2.

[0026] The locking rod 6 has a rounded corner, which is located at the end of the locking rod 6 that is inserted into the locking hole. This design makes it easier for the locking rod 6 to be inserted into the locking hole.

[0027] The implementation principle of the quick-connect assembly for the welding head of a friction stir welding machine according to an embodiment of this application is as follows: When disassembling the welding head 1, simply drive the threaded rod 92 to rotate by rotating the forward-rotating block 91, so that the two nut seats 93 move away from each other, drive the two locking rods 6 to move and exit the locking hole of the welding head 1, and the welding head 1 can be directly pulled out. When installing the welding head 1, insert the welding head 1 into the friction welding spindle 2, and then drive the threaded rod 92 to rotate by rotating the reverse-rotating block 91, so that the two nut seats 93 move closer to each other, drive the two locking rods 6 to move and insert them into the locking hole of the welding head 1, and the welding head 1 can be fixed. This achieves the effect of improving the method of fixing the friction stir welding head with screws and improving the efficiency of disassembling and replacing the friction stir welding head.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of this utility model, and the protection scope of this utility model is not limited to the above embodiments. All technical solutions within the scope of this utility model's concept are within the protection scope of this utility model. It should be pointed out that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A quick-connect assembly for the welding head of a friction stir welding machine, wherein the welding head (1) is coaxially inserted into the friction welding spindle (2), and the friction welding spindle (2) has an insertion hole for inserting the welding head (1), characterized in that: The assembly includes a fixing block (3), a mounting cylinder (4), a cylinder cover (5), a locking rod (6), a slider (7), and a connecting rod (8). The fixing block (3) is fixedly connected to the friction welding spindle (2), and there is one fixing block (3) on each of the opposite sides of the friction welding spindle (2). The mounting cylinder (4) is fixedly connected to the fixing block (3), and there is one mounting cylinder (4) on each of the two fixing blocks (3). The mounting cylinder (4) is arranged in a direction perpendicular to the friction welding spindle (2). The cylinder cover (5) is connected to the opening of the mounting cylinder (4). The locking rod (6) passes through the mounting cylinder (4). The mounting cylinder (4), the fixing block (3), and the friction welding spindle (2) are all provided with through holes for the locking rod (6) to pass through. The welding head (1) is provided with a locking hole for the locking rod (6) to be inserted. The slider (7) is connected to the end of the locking rod (6) located inside the mounting cylinder (4). The side wall of the slider (7) slides against the inner wall of the mounting cylinder (4). The connecting rod (8) is connected to the slider (7). The mounting cylinder (4) is provided with a sliding groove for the connecting rod (8) to pass through and move. An adjustment component (9) for driving the locking rod (6) to move is provided between the two connecting rods (8).

2. The quick-connect assembly for the welding head of a friction stir welding machine according to claim 1, characterized in that: The adjusting assembly (9) includes a rotating block (91), a threaded rod (92), and a nut seat (93). The nut seat (93) is fixedly connected to the end of the connecting rod (8). The nut seat (93) is provided on each of the two connecting rods (8). The threaded rod (92) is fixedly connected to the rotating block (91). The threaded rod (92) is provided on each of the opposite sides of the rotating block (91). The axes of the two threaded rods (92) are collinear. The thread grooves of the two threaded rods (92) are arranged in opposite directions. The threaded rod (92) is threadedly connected to the nut seat (93).

3. The quick-connect assembly for the welding head of a friction stir welding machine according to claim 2, characterized in that: A limiting nut (921) is connected to the threaded rod (92), and the limiting nut (921) is located at the end of the threaded rod (92) that passes through the nut seat (93).

4. The quick-connect assembly for the welding head of a friction stir welding machine according to claim 1, characterized in that: A push spring (41) is placed inside the mounting cylinder (4). One end of the push spring (41) abuts against the cylinder cover (5), and the other end abuts against the slider (7). The push spring (41) is always in a compressed state.

5. A quick-connect assembly for the welding head of a friction stir welding machine according to claim 1, characterized in that: The welding head (1) includes a plug-in portion, which is cylindrical in shape. The sidewall of the plug-in portion includes an arc surface and a limiting plane. The arc surface is located on opposite sides of the plug-in portion, and the limiting plane is located on the other opposite sides of the plug-in portion.

6. A quick-connect assembly for the welding head of a friction stir welding machine according to claim 1, characterized in that: The locking rod (6) is provided with a rounded corner, which is located at the end of the locking rod (6) that is inserted into the locking hole.

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