CN214921359U

CN214921359U - Convertible location hold-down mechanism, frock clamp and friction stir welding machine system

Info

Publication number: CN214921359U
Application number: CN202120553669.9U
Authority: CN
Inventors: 陈友展; 宋明; 闫同刚
Original assignee: Ningbo Youzhi Machinery Technology Co ltd
Current assignee: Ningbo Youzhi Machinery Technology Co ltd
Priority date: 2021-03-17
Filing date: 2021-03-17
Publication date: 2021-11-30
Anticipated expiration: 2031-03-17

Abstract

The application relates to convertible location hold-down mechanism, frock clamp and friction stir welding machine system, wherein, convertible location hold-down mechanism includes the connecting plate, sets up in the turning device at connecting plate both ends and connect on same connecting plate and to two at least clamp plates that the equidirectional extends, adjacent the clamp plate is used for compressing tightly respectively in the both sides of treating the welding seam of weldment, the turning device drive one side that the connecting plate was kept away from to the clamp plate is the direction upset of treating the weldment for axial is kept away from to one side that is close to the connecting plate. This application can be better to the panel of long welding seam press from both sides tight fixed, reduces its skew that causes in welding process, and the yields of the work piece after the welding shaping is higher.

Description

Convertible location hold-down mechanism, frock clamp and friction stir welding machine system

Technical Field

The application relates to the field of welding fixtures, in particular to a turnover type positioning and pressing mechanism, a tool fixture and a friction stir welding machine system.

Background

Friction stir welding is characterized in that a welded material is locally melted by heat generated by friction between a welding tool rotating at a high speed and a to-be-welded part, and when the welding tool moves forwards along a welding interface, a plasticized material flows from the front part to the rear part of the welding tool under the action of the rotating friction force of the welding tool and forms a compact solid-phase welding seam under the extrusion of the welding tool. The friction stir welding machine is an apparatus for welding a workpiece to be welded by a friction stir welding technique, and generally, a tooling fixture on the friction stir welding machine is designed correspondingly according to the different workpieces to be welded.

Because of the superiority of friction stir welding in welding metal sheets, friction stir welding is generally applied to welding metal materials having long weld seams and large cross sections. Because the last unloading of waiting to weld usually adopts devices such as portal crane to carry out vertical loading and unloading, and the stirring head of friction stir welding machine also arranges the top of waiting to weld, therefore in order to avoid causing the interference to stirring head and last unloading, present frock clamp adopts a large amount of equipartitions to wait that the lever hydro-cylinder of welding week side carries out the centre gripping fixed to treating to weld to avoid waiting to weld to take place skew and dislocation in welding process.

However, the tool clamp has certain disadvantages when welding long welding seams. Because the parts to be welded are only fixed by the lever oil cylinders on the peripheral sides, the fixing strength of the part positioned at the central position of the long welding line is lower, and the rigid fixing required by the process can not be met sometimes, so that the conditions of deflection, height dislocation and the like of the two parts to be welded can often occur in the welding process, and the quality after forming is influenced.

SUMMERY OF THE UTILITY MODEL

In order to improve the clamping and fixing strength of a long welding seam to-be-welded part and reduce the dislocation phenomenon of the long welding seam in the welding process, the application provides a turnover type positioning and pressing mechanism, a tool clamp and a stirring friction welding machine system.

In a first aspect, the application provides a convertible location hold-down mechanism adopts following technical scheme:

the utility model provides a convertible location hold-down mechanism, includes the connecting plate, set up in the turning device at connecting plate both ends and connect on same connecting plate and to two at least clamp plates that the equidirectional extends, adjacent the clamp plate is used for compressing tightly respectively in the both sides of treating the welding seam of weldment, the turning device drive one side that the connecting plate was kept away from to the clamp plate is used for one side near the connecting plate to keep away from the direction upset of treating the weldment as the axial.

Through adopting above-mentioned technical scheme, the setting up of clamp plate makes the part of long welding seam both sides all can fix the welding piece through the effect of convertible location hold-down mechanism with treating, and then improves its stability in welding process, compares more stably with the fixed mode of the lever cylinder of week side, and presss from both sides tightly the effect better. And through the setting of tilting mechanism for the clamp plate can be opened or treat the weldment through the mode of upset and compress tightly, can not influence the normal unloading of treating the weldment on going up, also need not to set up too much spare part at the upside of treating the weldment simultaneously, can not influence the normal welding of friction stir welding machine.

Preferably, the turning device comprises a connecting seat, a connecting rod arranged on the connecting seat and a turning driving piece hinged on the connecting seat, the turning driving piece is located above the connecting rod and is rotatably connected with the connecting plate, a driving rod of the turning driving piece is rotatably connected with the connecting plate, and the turning driving piece drives the connecting plate to rotate by taking an axis hinged with the connecting rod as an axis.

Through adopting above-mentioned technical scheme, when the upset driving piece drive, can act on the connecting plate with the effort, and then make the connecting plate can be followed and take place to rotate with connecting rod articulated shaft to realize the function of the upset of clamp plate.

Preferably, the device also comprises lever oil cylinders used for pressing one side of the pressing plate, which is far away from the connecting plate, and each pressing plate corresponds to at least one lever oil cylinder.

Through adopting above-mentioned technical scheme, this kind of setting can improve the clamp plate and treat the compressing tightly effect of weldment time in the fixed, improves the compressive strength who treats the weldment in the vertical direction, further improves the stability of treating the weldment in welding process.

Preferably, the connecting plate below is provided with the drive connecting plate downstream in order to force the clamp plate to push down the driving piece that compresses tightly, it is fixed with the fixed plate in the drive shaft of driving piece to compress tightly, the below of connecting plate is provided with the articulated seat articulated with the fixed plate, set up on the fixed plate and supply the waist shape hole that slides with articulated shaft of articulated seat, the connecting rod is connected with the connecting seat is articulated.

Through adopting above-mentioned technical scheme, can further improve the fixed effect of treating the weldment through compressing tightly the fixed effect of driving piece and the mutually supporting of lever cylinder. In addition, the number of lever cylinders can be reduced in this way, and the purpose of simultaneously pressing a plurality of pressing plates can be achieved only by arranging a plurality of pressing driving pieces on the connecting plate.

Preferably, a hinge member for hinging the connecting rod is arranged below the connecting plate.

Preferably, a hinged plate for hinging the driving rod of the overturning driving piece is arranged above the connecting plate, and the vertical projection of the hinged plate and the hinged point of the overturning driving piece is positioned on one side, close to the connecting seat, of the connecting plate.

Through adopting above-mentioned technical scheme, this kind sets up simple structure, has made things convenient for connecting rod and connecting plate and upset driving piece and connecting plate to realize articulated, also can be with the arm of force dispersion on the connecting plate simultaneously, and then conveniently upset driving piece drive clamp plate opens.

Preferably, the pressing plate comprises a base plate connected with the connecting plate and a reinforcing plate fixed on the base plate.

Through adopting above-mentioned technical scheme, this kind of setting has made things convenient for the manufacturing and the equipment of clamp plate, and structural strength is also higher simultaneously to can improve to a certain extent and treat the compressing tightly effect of weldment.

Preferably, an abutting block for abutting against the to-be-welded part is arranged below the pressure plate.

Through adopting above-mentioned technical scheme, the thickness through changing the butt joint piece can be comparatively convenient adaptation clamp plate and treat the interval of treating difference between the welding piece, and the compatibility is better, and the debugging is comparatively convenient.

In a second aspect, the present application provides a tooling fixture, which adopts the following technical scheme:

a tool clamp comprises the turnover type positioning and pressing mechanism.

In a third aspect, the friction stir welding system provided by the present application adopts the following technical scheme:

a friction stir welding machine system comprises the tool clamp.

In summary, the present application includes at least one of the following beneficial technical effects:

1. parts on two sides of the long welding line can fix the to-be-welded part under the action of the turnover type positioning and pressing mechanism, so that the stability of the to-be-welded part in the welding process is improved, the clamping effect is better, and the qualified rate of the welded and formed product is higher;

2. structural strength is high, and operating procedure is simple, conveniently debugs.

Drawings

Fig. 1 is a schematic structural view of a tool holder according to an embodiment.

FIG. 2 is a top view of a tooling fixture in accordance with one embodiment.

Fig. 3 is a schematic structural diagram of the turnover positioning and pressing mechanism in one embodiment.

Fig. 4 is a schematic view of a hinge.

FIG. 5 is a schematic view of an embodiment of a compression driver and a retaining plate.

Fig. 6 is a front view of the flip positioning hold down mechanism of an embodiment, wherein the platen is in a hold down state.

Fig. 7 is a front view of the flip type positioning and pressing mechanism of an embodiment, wherein the pressing plate is in a flipped open state.

Description of reference numerals: 1. mounting a plate; 2. a turnover positioning and pressing mechanism; 3. placing a platform; 21. a connecting plate; 22. a turning device; 23. pressing a plate; 221. a connecting seat; 222. a connecting rod; 223. turning over the driving piece; 24. an articulation member; 25. a hinge plate; 241. a connecting portion; 242. an installation part; 243. hinging a shaft; 26. compressing the driving member; 27. a lever cylinder; 28. a fixing plate; 29. a hinged seat; 281. a kidney-shaped hole; 231. a substrate; 232. a reinforcing plate; 233. a butting block; a. and (7) welding seams.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

The embodiment of the application discloses a tool clamp. Referring to fig. 1 and 2, the tooling fixture includes a mounting plate 1, a turnover positioning and pressing mechanism 2 disposed on the mounting plate 1, and a placing platform 3 for placing a to-be-welded part. The turnover type positioning and pressing mechanism 2 is used for applying pressure in the vertical direction to the to-be-welded part so as to enable the to-be-welded part to be rigidly fixed on the placing platform 3. In this embodiment, the to-be-welded members are strip-shaped, and a joint seam formed by mutually splicing adjacent to-be-welded members is a to-be-welded seam a. For convenience of explanation, the weld seams a on the to-be-welded part are parallel to each other in the present application, but it should be noted that the weld seams a and the weld seams a are not necessarily designed in a completely parallel manner, and only need to be extended in substantially the same direction.

Referring to fig. 2 and 3, the turnover positioning and pressing mechanism 2 includes a connecting plate 21, turnover devices 22 disposed at two ends of the connecting plate 21, and at least two pressing plates 23 connected to the same connecting plate 21 and extending in the same direction, and the adjacent pressing plates 23 are respectively pressed on two sides of a weld a of a to-be-welded part. The number of the pressing plates 23 is related to the number of the welding seams a, and generally, the number of the pressing plates 23 is at least larger than the number of the welding seams a. The turnover device 22 is used for driving one side of the pressing plate 23, which is far away from the connecting plate 21, to turn in a direction which is far away from the piece to be welded by taking one side close to the connecting plate 21 as an axial direction, so that the pressing plate 23 is separated from the piece to be welded. When the turning device 22 drives the pressing plate 23 to be fully opened, the vertical projection of the to-be-welded part does not intersect with the pressing plate 23 and the connecting plate 21, and the to-be-welded part can vertically move upwards under the action of the loading and unloading mechanism to be separated from the circumferential positioning mechanism 3.

The turnover device 22 is disposed at two sides of the placing platform 3, and the turnover device 22 includes a connecting base 221 fixed relative to the mounting plate 1, a connecting rod 222 hinged to the connecting base 221 and rotatably connected to the connecting plate 21, and a turnover driving member 223 hinged to the connecting base 221. The tumble drive 223 is preferably a hydraulic cylinder in this embodiment, the tumble drive 223 is located above the connecting rod 222, and the drive rod of the tumble drive 223 is rotatably connected with the connecting plate 21. By extending and shortening the turnover driving member 223, the connecting plate 21 can be driven to rotate around the axis hinged to the connecting rod 222, so that the pressing plate 23 can be turned over.

Referring to fig. 3 and 4, specifically, a hinge 24 for the connection rod 222 to hinge is fixed below the connection plate 21, a hinge plate 25 for the driving rod of the turnover driving member 223 to hinge is fixed above the connection plate 21, and a vertical projection of a hinge point of the hinge plate 25 and the turnover driving member 223 is located on a side of the connection plate 21 close to the connection seat 221. The hinge 24 includes a connecting portion 241 fixed on the connecting plate 21, two parallel mounting portions 242 integrally disposed on the connecting portion 241 and extending to a side away from the connecting plate 21, and an articulated shaft 243, the connecting rod 222 is inserted between the mounting portions 242 of two adjacent sides, and the articulated shaft 243 sequentially penetrates through the mounting portions 242 and the connecting rod 222 and is axially limited and mounted on the mounting portions 242 so as to realize the rotational connection between the hinge 24 and the connecting rod 222.

Referring to fig. 2 and 3, a plurality of pressing driving members 26 fixed on the mounting plate 1 are arranged below the connecting plate 21, a plurality of lever cylinders 27 fixed opposite to the mounting plate 1 are arranged at one end of the pressing plate 23 away from the connecting plate 21, each pressing plate 23 corresponds to at least one lever cylinder 27, and the pressing plate 23 can be forced to press the to-be-welded piece downwards through the combined action of the lever cylinders 27 and the pressing driving members 26. Specifically, the driving end of the lever cylinder 27 is configured to press against the upper end surface of the pressing plate 23, and when the driving shaft of the lever cylinder 27 retracts, the driving end of the lever cylinder 27 tilts upward to be away from the rotation path of the pressing plate 23.

Referring to fig. 3 and 5, the compression driving members 26 are preferably hydraulic cylinders in this embodiment, a fixing plate 28 is fixedly connected to the driving shaft of each compression driving member 26, hinge seats 29 hinged to the fixing plate 28 in a one-to-one correspondence are disposed below the connecting plate 21, and a waist-shaped hole 281 for sliding a hinge shaft 243 hinged to the hinge seats 29 is formed in the fixing plate 28 along a horizontal direction. The specific structures of the hinge seat 29 and the hinge 24 are the same and will not be described herein. It should be noted that this arrangement reduces the number of cylinders and the pressure is applied to all of the pressure plates 23 by means of only a plurality of compression drives 26 which are evenly spaced, at a lower cost than the lever cylinders 27 on the other side.

Referring to fig. 6 and 7, when the pressing plate 23 is in a state of pressing the workpiece to be welded, the lever cylinder 27 presses the pressing plate 23, and the pressing driving member 26 is in a contracted state so that the two sides of the pressing plate 23 are synchronously stressed, and at this time, the upper side hole wall of the waist-shaped hole 281 on the fixing plate 28 abuts against the hinge shaft 243 to transmit the pulling force of the pressing driving member 26. When the roll-over type positioning pressing mechanism 2 is switched to the roll-over state, the lever cylinder 27 and the pressing driving member 26 first act to remove the pressure at the two ends of the pressing plate 23, at this time, the connecting plate 21 is lifted upwards under the action of the pressing driving member 26, the hinge shaft 243 on the hinge seat 29 slides on the fixing plate 28, and the roll-over driving member 223 and the connecting rod 222 correspondingly rotate by a certain amount under the synchronous action of the connecting plate 21. Thereafter, the inversion driving unit 223 is operated to rotate the connecting plate 21 about the axis hinged to the connecting rod 222, and the hinge base 29 is also rotated about the fixing plate 28. In synchronization with the rotation of the connecting plate 21, the pressing plate 23 also rotates about the hinge shaft 243 where the connecting rod 222 is hinged to the connecting plate 21, and is disengaged from the workpiece to be welded.

Preferably, when the pressing driving member 26 is contracted to the maximum stroke and the clamping driving member is contracted to the maximum stroke, the turning driving member 223 and the connecting rod 222 are parallel to each other and kept in a horizontal state, and a connecting line from a hinge point of the turning driving member 223 and the connecting seat 221 to a hinge point of the connecting rod 222 and the connecting seat 221 is parallel to a connection from the hinge point of the turning driving member 223 and the hinge plate 25 to a hinge point of the hinge 24 and the connecting rod 222. Thus, by this arrangement, the four hinge points are interconnected to form a parallelogram, and the four points can still form a parallelogram by the hinge shaft 243 of the hinge seat 29 sliding in the kidney-shaped hole 281 of the fixed plate 28 during the extension of the compression driving member 26.

Referring to fig. 3, the pressing plate 23 further includes a base plate 231 fixedly connected to the connecting plate 21 and a reinforcing plate 232 fixed above the base plate 231, and an abutment block 233 for abutting against a to-be-welded member is fixed below the base plate 231. Through changing the thickness of the abutting block 233, the pressing plate 23 can be adapted to various workpieces to be welded with different surface heights, so that the adjustment is more convenient and the efficiency is higher.

The implementation principle of a tooling fixture in the embodiment of the application is as follows: in the process of loading the to-be-welded parts, the turnover type positioning and pressing mechanism 2 is firstly turned over, the to-be-welded parts are gradually loaded onto the placing platform 4 according to a preset loading sequence, and then the turnover type positioning and pressing mechanism 2 clamps the to-be-welded parts to wait for welding of welding seams.

The embodiment of the application also discloses a friction stir welding system, which comprises a friction stir welding machine and the tooling clamp, wherein the tooling clamp can be fixed on the machine tool of the friction stir welding machine and can also be detachably connected with the machine tool of the friction stir welding machine, and the specific detachable connection mode is a conventional technical means of the technical personnel in the field, and is not repeated here.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a convertible location hold-down mechanism which characterized in that: including connecting plate (21), set up turning device (22) at connecting plate (21) both ends and connect on same connecting plate (21) and to two at least clamp plates (23) that the equidirectional extends, it is adjacent clamp plate (23) are used for compressing tightly respectively in the both sides of treating the welding seam (a) of weldment, turning device (22) drive one side that connecting plate (21) were kept away from in clamp plate (23) is used for the direction upset of axial keeping away from treating the weldment for one side of being close to connecting plate (21).

2. The roll-over positioning and pressing mechanism according to claim 1, wherein: the turnover device (22) comprises a connecting seat (221), a connecting rod (222) arranged on the connecting seat (221) and a turnover driving piece (223) hinged to the connecting seat (221), the turnover driving piece (223) is located above the connecting rod (222), the connecting rod (222) is rotatably connected with the connecting plate (21), a driving rod of the turnover driving piece (223) is rotatably connected with the connecting plate (21), and the turnover driving piece (223) drives the connecting plate (21) to rotate by taking an axis hinged to the connecting rod (222) as an axis.

3. The roll-over positioning and pressing mechanism according to claim 2, wherein: the pressing device also comprises lever oil cylinders (27) used for pressing one sides of the pressing plates (23) far away from the connecting plate (21), and each pressing plate (23) corresponds to at least one lever oil cylinder (27).

4. The roll-over positioning and compacting mechanism according to claim 3, wherein: the connecting plate (21) below is provided with the drive connecting plate (21) and moves down in order to force the clamp plate (23) to push down compresses tightly driving piece (26), be fixed with fixed plate (28) in compressing tightly the drive shaft of driving piece (26), the below of connecting plate (21) is provided with and articulates articulated seat (29) with fixed plate (28), set up on fixed plate (28) and supply with articulated shaft (243) articulated waist shape hole that slides of articulated seat (29), connecting rod (222) are connected with connecting seat (221) are articulated.

5. The roll-over positioning and pressing mechanism according to claim 2, wherein: and a hinge piece (24) for hinging the connecting rod (222) is arranged below the connecting plate (21).

6. The roll-over positioning and pressing mechanism according to claim 2, wherein: the hinge plate (25) for hinging the driving rod of the overturning driving piece (223) is arranged above the connecting plate (21), and the vertical projection of the hinge point of the hinge plate (25) and the overturning driving piece (223) is positioned on one side, close to the connecting seat (221), of the connecting plate (21).

7. The roll-over positioning and pressing mechanism according to claim 1, wherein: the pressure plate (23) comprises a base plate (231) connected with the connecting plate (21) and a reinforcing plate (232) fixed on the base plate (231).

8. The roll-over positioning and compacting mechanism according to claim 7, wherein: and an abutting block (233) used for abutting against a to-be-welded part is arranged below the pressure plate (23).

9. The utility model provides a frock clamp which characterized in that: comprises the turnover type positioning and pressing mechanism (2) as claimed in any one of claims 1-8.

10. A friction stir welding machine system, comprising: comprising a friction stir welding machine and a tooling fixture according to claim 9.