CN112440066A

CN112440066A - a tooling fixture

Info

Publication number: CN112440066A
Application number: CN202011471033.6A
Authority: CN
Inventors: 陈友展; 陈翔
Original assignee: Ningbo Youzhi Machinery Technology Co ltd
Current assignee: Ningbo Youzhi Machinery Technology Co ltd
Priority date: 2020-12-14
Filing date: 2020-12-14
Publication date: 2021-03-05

Abstract

The invention relates to the technical field of tooling fixtures, and specifically provides a tooling fixture, comprising a fixture body and a lifting device, the fixture body comprising a bottom plate, a pressing mechanism and a magnetic suction device, and the magnetic suction device and the pressing mechanism are arranged on On the bottom plate, the pressing mechanism is used to press the workpiece, and the magnetic suction device is used to support the bottom of the workpiece; the lifting device includes an upper pressing plate and a rotating lifting mechanism, and the upper pressing plate is used for the cover It is arranged on the top of the workpiece and is adsorbed by the magnetic attraction device. The upper pressing plate is detachably connected to the rotating lifting mechanism, and the rotating lifting mechanism is used to drive the upper pressing plate to move. The tooling fixture of the present invention can effectively ensure that the workpiece is kept flat and not deformed during the welding process by using the magnetic suction device to suck the upper pressure plate through the workpiece.

Description

Work fixture

Technical Field

The invention relates to the technical field of tool fixtures, in particular to a tool fixture.

Background

In the process of friction stir welding or other welding of the workpiece, the workpiece needs to be compressed and fixed by using a tool clamp. The existing tool clamp is generally positioned by two pin holes, a supporting block is arranged below a welding line of a workpiece for supporting, and an oil cylinder is arranged above the welding line for pressing.

But when welding to the great and thin work piece of area, current frock clamp has many drawbacks: during welding, the workpiece is easy to deform; because the work piece size is great, the position far away from the frame can not be compressed tightly effectively.

Disclosure of Invention

In order to solve at least one aspect of the above technical problem, the present invention provides a tool holder.

The tool clamp comprises a clamp main body and a lifting device, wherein the clamp main body comprises a bottom plate, a pressing mechanism and a magnetic suction device, the magnetic suction device and the pressing mechanism are arranged on the bottom plate, the pressing mechanism is used for pressing a workpiece, and the magnetic suction device is used for jacking at the bottom of the workpiece;

the lifting device comprises an upper pressure plate and a rotating lifting mechanism, the upper pressure plate is used for covering the top of the workpiece and magnetically adsorbing the magnetic attraction device, the upper pressure plate is detachably connected with the rotating lifting mechanism, and the rotating lifting mechanism is used for driving the upper pressure plate to move.

According to the tool clamp, the upper pressing plate is adsorbed by the magnetic attraction device such as the electromagnet through the workpiece, so that the flatness of the workpiece is guaranteed, and particularly for the workpiece with a large area or a thin area, the workpiece can be effectively guaranteed to be flat and not to deform in the welding process. Moreover, the upper pressure plate and the rotary lifting mechanism can be detachably connected, so that the upper pressure plate and the rotary lifting mechanism are separated during welding, and the work of a welding machine is not influenced; when the upper pressing plate is connected with the rotary lifting mechanism, the upper pressing plate can be separated from the clamp main body, so that the workpiece can be conveniently taken and placed.

Optionally, the rotary lifting mechanism includes a base, a fifth driving device, a rotary arm, a sixth driving device and a lifting arm, the fifth driving device is connected to the base, one end of the rotary arm is hinged to an output end of the fifth driving device, and the other end of the rotary arm is hinged to the base;

the sixth driving device and the lifting arm are arranged on the rotating arm, the sixth driving device is in driving connection with the lifting arm, one end of the lifting arm is in sliding connection with the rotating arm, and the other end of the lifting arm is used for being connected with the upper pressure plate.

Optionally, the lifting device further comprises a mounting plate, an expansion mechanism and a lifting flange, wherein the mounting plate is connected with the lifting arm, the lifting flange is connected with the upper pressure plate, the expansion mechanism is arranged on the mounting plate, and one end of the expansion mechanism is used for extending into a central hole of the lifting flange and is connected with the lifting flange in an expansion mode.

Optionally, the expansion mechanism comprises a seventh driving device, a pin cylinder, an internal expansion pin and a pin, and the seventh driving device and the pin cylinder are both connected with the mounting plate;

the inner expansion pin is in driving connection with the seventh driving device, the pin barrel is sleeved on the outer wall of the inner expansion pin, one end of the pin is used for abutting against the inner expansion pin, and the other end of the pin is used for abutting against the inner wall of the center hole of the lifting flange.

Optionally, the anchor clamps main part still includes plug locating pin mechanism, plug locating pin mechanism includes first drive arrangement, uide bushing and plug pin, the uide bushing lateral wall through the locating pin seat with the bottom plate is connected, first drive arrangement sets up the uide bushing bottom, the uide bushing cover is established plug pin outer wall, the plug pin with a drive arrangement drive is connected.

Optionally, the fixture main body further comprises a sliding positioning pin mechanism, the sliding positioning pin mechanism comprises a sliding pin seat and a sliding pin, the sliding pin seat is arranged on the bottom plate, the sliding pin is connected with the sliding pin seat in a sliding mode, and a connecting line between the sliding pin and the plug pin is parallel to the sliding direction of the sliding pin.

Optionally, two lugs arranged oppositely are arranged at the top of the sliding pin seat, opposite surfaces of the two lugs are provided with opposite sliding grooves, and a boss is arranged at the bottom of the sliding pin and located in the sliding groove.

Optionally, the fixture main body further includes a casting supporting mechanism, the casting supporting mechanism includes an installation block, a third driving device, a conveying plate, a fourth driving device and a supporting block, the installation block is disposed on the bottom plate, the conveying plate and the third driving device are both disposed on the installation block, the conveying plate is slidably connected to the installation block, the third driving device is drivingly connected to the conveying plate, the fourth driving device is disposed on the conveying plate, the fourth driving device is drivingly connected to the supporting block, and the supporting block is used for supporting the casting of the workpiece.

Optionally, the casting supporting mechanism further includes a supporting seat and at least two auxiliary driving supporting devices, the supporting seat is disposed on the conveying plate, the auxiliary driving supporting devices are disposed on the supporting seat and are respectively disposed on two sides of the fourth driving device, and the auxiliary driving supporting devices are used for supporting the bottom of the supporting block.

Optionally, the clamp body further comprises a pressing mechanism, and the pressing mechanism comprises a pressing plate, a lever arm, a supporting rod, a second driving device and a travel switch;

one end of the lever arm is connected with the pressure plate, the pressure plate is used for pressing a welding seam of the workpiece, the other end of the lever arm is in driving connection with the second driving device, the lever arm is hinged with the supporting rod, and the travel switch is used for detecting the position of the lever arm.

Optionally, the pressing mechanism further comprises a movable joint, the bottom of the movable joint is connected with the pressing plate, a cylindrical structure is arranged at the top of the movable joint, the lever arm is provided with a cylindrical groove, and the cylindrical structure of the movable joint is clamped into the cylindrical groove of the lever arm.

Drawings

Fig. 1 is a schematic front view of a battery tray according to an embodiment of the present invention;

FIG. 2 is a schematic view of a back side weld of a battery tray according to an embodiment of the present invention;

FIG. 3 is a view showing the structure of a main body of the jig according to the embodiment of the present invention;

FIG. 4 is a block diagram of a lifting device according to an embodiment of the present invention;

FIG. 5 is a partial block diagram of a lifting device according to an embodiment of the present invention;

fig. 6 is a partially enlarged view of a portion a in fig. 5.

FIG. 7 is another partial block diagram of a lifting device according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of the lifting flange and the tightening mechanism of the embodiment of the present invention;

FIG. 9 is a block diagram of a locating pin insertion and removal mechanism according to an embodiment of the present invention;

FIG. 10 is a schematic diagram of the engagement between the plug pin and the guide sleeve according to the embodiment of the present invention;

FIG. 11 is a block diagram of a slide detent mechanism according to an embodiment of the present invention;

FIG. 12 is a block diagram of a casting support mechanism according to an embodiment of the invention;

FIG. 13 is a structural view of a pressing mechanism of the embodiment of the present invention;

figure 14 is a partial cross-sectional view of a hold-down mechanism from another perspective of an embodiment of the present invention.

Description of reference numerals:

1-a bottom plate; 11-a magnetic attraction device; 12-the workpiece jacking block; 13-a weld support block;

2-inserting and pulling the positioning pin mechanism; 21-positioning pin seat; 211-a first connection plate; 212-a second connecting plate; 22-a first gasket; 25-a guide sleeve; 26-a plug pin; 27-a first drive;

3-a sliding positioning pin mechanism; 31-a reference block; 32-a second gasket; 33-a sliding pin seat; 331-a lug; 332-kidney-shaped hole; 34-a sliding pin;

4-a pressing mechanism; 41-a pressing plate; 42-living joint; 43-lever arm; 431-limiting screw holes; 45-limit screws; 46-a second drive; 47-support bars; 48-a travel switch;

5-a casting support mechanism; 51-a mounting block; 511-a first slide rail; 52-third drive means; 54-a transport plate; 541-a first slider; 55-a fourth drive; 56-a support seat; 57-auxiliary drive support means; 58-a support block;

61-an upper platen; 62-a lifting plate; 63-lifting the flange;

7-rotating the lifting mechanism; 701-a base; 702-a fifth drive; 703-a swivel arm; 704-a sixth drive; 705-lifting arm; 706-a second slider; 707-a second slide rail; 708-a cross-lift; 709-mounting plate; 710-an adjustment seat; 711-adjusting screw; 714-a pedestal bearing; 715-rotation pin; 716-rotating the cylinder block; 717-hinge pin; 718-a push rod pin boss; 719-push rod pin;

8-a tensioning mechanism; 82-seventh drive means; 83-inner expansion pin; 84-a pin barrel; 85-pin; 851-limit protrusions; 86-a spring; 87-steel balls; 88-a retainer ring;

9-a battery tray; 91-welding a seam; 92-casting, 93-large pallet.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

In the drawings of the specification of the present invention, the X direction represents the right direction, and the direction opposite to the X direction represents the left direction; the Y direction represents the rear, and the direction opposite to the Y direction represents the front; the Z direction indicates the upward direction, and the direction opposite to the Z direction indicates the downward direction.

If there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

In the process of friction stir welding or other welding of the workpiece, the workpiece needs to be compressed and fixed by using a tool clamp. However, when welding a workpiece with a large area and a thin area, the conventional tool clamp has many disadvantages, such as that the workpiece is easy to deform during welding; because the work piece size is great, the position far away from the frame can not be compressed tightly effectively.

Referring to fig. 1 and 2, a workpiece of the battery tray 9 is taken as an example. The battery tray 9 includes a large support plate 93 with a large area and a casting 92 surrounding the edge of the large support plate 93, and when the large support plate 93 and the casting 92 are welded (here, friction welding, or welding, brazing, or other bonding for other workpieces) together, four weld seams 91 are formed. Because the large supporting plate 93 is large in area and thin, the existing fixture is adopted for fixing, the part far away from the frame cannot be effectively compressed, the large supporting plate 93 is very easy to deform during welding, and finally the quality of finished products of workpieces is poor and more unqualified products are produced.

As shown in fig. 3 and 4, in order to solve the above technical problems to some extent, the present invention provides a tool holder. The tool clamp comprises a clamp main body and a lifting device.

The clamp main body comprises a bottom plate 1, a pressing mechanism 4 and a magnetic suction device 11. The bottom plate 1 is a flat plate, and the magnetic suction device 11 and the pressing mechanism 4 are fixedly arranged on the bottom plate 1. The pressing mechanism 4 is used for pressing the workpiece, and the magnetic attraction device 11 is used for lifting at the bottom of the workpiece. The number and the positions of the pressing mechanism 4 and the magnetic suction device 11 are set according to the actual requirements of the workpiece.

The lifting device comprises an upper pressing plate 61 and a rotating lifting mechanism 7, wherein the upper pressing plate 61 is used for covering the top of the workpiece and magnetically adsorbing the workpiece with the magnetic attraction device 11, so that the workpiece is clamped and fixed, and the workpiece is prevented from deforming during welding. The upper pressure plate 61 is detachably connected with the rotary lifting mechanism 7, and the rotary lifting mechanism 7 is used for driving the upper pressure plate 61 to move. The detachable connection here means: the rotary lifting mechanism 7 can be connected with the upper pressure plate 61, so that the rotary lifting mechanism 7 drives the upper pressure plate 61 to be separated from the clamp main body, and a workpiece is convenient to take and place; the rotary lifting mechanism 7 can also be disengaged from the upper platen 61 so that the welding equipment can normally perform welding operations on the workpiece without obstruction.

For example, the magnetic attraction device 11 may be an electromagnet, and the top surface of the electromagnet is a plane and can be attached to the bottom surface of the workpiece. The magnetic attraction device 11 may also be a permanent magnet with a plate-shaped structure, such as a neodymium iron boron magnet, a samarium cobalt magnet, an alnico magnet, etc. in a metal alloy magnet.

In the present embodiment, the battery tray 9 is used as a workpiece (hereinafter, the battery tray 9 is used as a welding workpiece unless otherwise specified). The magnetic suction device 11 comprises 11 pieces, wherein 10 pieces are distributed in a rectangular shape, and 1 piece is arranged in the middle of the rectangular shape. The number of the pressing mechanisms 4 is 16, and the pressing mechanisms are evenly distributed around the workpieces to be welded. The upper press plates 61 are 5 pieces in total and are arranged in parallel with each other. The upper press plate 61 is made of 45 # steel (of course, other materials meeting the requirement of magnetic attraction) and has a hollow structure. Thus, the weight of the upper platen 61 can be reduced as much as possible, and the contact effect with the workpiece can be ensured. During welding, the battery tray 9 is buckled on the magnetic attraction device 11, the pressing mechanism 4 presses the welding line 91, welding equipment walks along the welding line 91 for welding, and the pressing mechanism 4 is opened in sequence for the welding equipment to pass through.

The frock clamp of this embodiment sees through the work piece through magnetism device 11 and tightly holds top board 61 to the level and smooth of guarantee work piece, especially to the great or thin work piece of area, can effectively ensure the work piece and keep leveling indeformable by welded in-process. Moreover, because the upper pressure plate 61 and the rotary lifting mechanism 7 can be detachably connected, when welding, the upper pressure plate 61 and the rotary lifting mechanism 7 are separated, and the work of a welding machine is not influenced; when the upper pressing plate 61 is connected with the rotating lifting mechanism 7, the upper pressing plate 61 can be separated from the clamp main body, so that the workpiece can be conveniently taken and placed.

The upper surface of the bottom plate 1 is also fixedly provided with a workpiece jacking block 12 and a welding seam supporting block 13. The weld supporting block 13 is used for supporting the lower surface of the weld 91, and the workpiece jacking block 12 is used for jacking the workpiece when the workpiece is taken down after the workpiece is welded. In this embodiment, the total number of the weld supporting blocks 13 is eight, and the eight weld supporting blocks are respectively located on the peripheral frame of the workpiece and under the weld seam 91; the number of the workpiece jacking blocks 12 is four, and the workpiece jacking blocks are distributed on the bottom plate 1 in a rectangular mode.

As shown in fig. 5, preferably, the rotary lifting mechanism 7 includes a base 701, a fifth driving device 702, a rotary arm 703, a sixth driving device 704, and a lifting arm 705.

Specifically, in this embodiment, the fifth driving device 702 and the sixth driving device 704 are both hydraulic cylinders, and in other embodiments, air cylinders, motors, and the like may be used. A rotary cylinder block 716 is fixedly mounted on the base 701, and a housing of the fifth driving device 702 is hinged to the rotary cylinder block 716 by a hinge pin 717. Two opposite bearing blocks 714 are fixedly mounted on the base 701, the rotating arm 703 is arranged between the two bearing blocks 714, and one end of the rotating arm 703 is hinged with the two bearing blocks 714 through a rotating pin 715. The other end of the rotating arm 703 is fixedly mounted with a push rod pin seat 718 facing one side of the rotating cylinder seat 716, and the end of the output push rod of the fifth driving device 702 is hinged with the push rod pin seat 718 through a push rod pin 719. The fifth driving device 702 is used for driving the rotating arm 703 to rotate.

A second slide rail 707 and another cylinder seat are fixedly mounted on the side wall of the rotating arm 703, and the cylinder seat is located below the second slide rail 707. The housing of the sixth driving device 704 is hinged to the cylinder base, the end of the output push rod of the sixth driving device 704 is hinged to the second slider 706, and the second slider 706 is slidably connected to the second sliding rail 707. The sixth driving device 704 is used for driving the second slider 706 to slide relative to the second sliding rail 707. One end of the lifting arm 705 is fixedly connected to the second slider 706. The other end of the lifting arm 705 is used for connection with the upper platen 61.

As shown in fig. 6, preferably, an adjusting seat 710 is fixedly mounted on the base 701, and a screw hole is formed on the adjusting seat 710, and an adjusting screw 711 is screwed into the screw hole. One side of the rotary cylinder seat 716 is provided with a T-shaped groove, and the screw head of the adjusting screw 711 is clamped in the T-shaped groove. The perpendicularity of the rotating arm 703 can be adjusted by screwing the adjusting screw 711 with a wrench. The rotary cylinder base 716 is provided with a kidney-shaped hole, so that the position of the rotary cylinder base 716 can be conveniently adjusted.

As shown in fig. 7 and 8, the upper surface of the upper press plate 61 is fixedly connected with the lifting plate 62, the lifting plate 62 has a rectangular frame structure, and the upper press plate 61 is parallel to one edge frame of the lifting plate 62. A plurality of lifting flanges 63 are fixedly mounted on the lifting plate 62. The rotary lifting mechanism 7 further comprises a cross-shaped lifting frame 708, and the cross-shaped lifting frame 708 comprises two bridge plates which are vertically crossed and fixedly connected. The middle of the cross-lift bracket 708 is fixedly attached to one end of the lift arm 705. Four ends of the cross-shaped lifting frame 708 are respectively connected with a mounting plate 709, and two expansion mechanisms 8 are fixedly mounted on each mounting plate 709. One lifting flange 63 for each tightening mechanism 8. One end of the expansion mechanism 8 is fixedly connected with the rotary lifting mechanism 7, and the other end of the expansion mechanism 8 is used for extending into the central hole of the lifting flange 63 and is connected with the lifting flange 63 in an expansion mode. The expansion mechanism 8 and the lifting flange 63 are detachably connected in an expansion manner, so that the detachable connection of the upper pressure plate 61 and the rotary lifting mechanism 7 is realized.

As shown in fig. 8, specifically, the expansion mechanism 8 includes a seventh driving device 82, an inner expansion pin 83, and a pin barrel 84. The seventh driving device 82 is a hydraulic cylinder, the seventh driving device 82 is fixedly mounted on the upper surface of the mounting plate 709, and the pin cylinder 84 is fixedly mounted on the lower surface of the mounting plate 709. The mounting plate 709 is provided with a through hole penetrating its upper and lower surfaces, through which an output push rod of the seventh driving means 82 passes and is connected to the top end of the inner expansion pin 83. A first through hole and a second through hole which are mutually communicated are arranged in the pin cylinder 84, the axial lead of the first through hole is overlapped with the axial lead of the through hole on the mounting plate 709, and the axial lead of the second through hole is vertical to the axial lead of the first through hole. The inner expansion pin 83 is located in the first through hole and can move up and down in the first through hole under the driving of the seventh driving device 82.

And a pin 85 is arranged in the second through hole, one end of the pin 85 is used for abutting against the bottom end of the inner expansion pin 83, and the other end of the pin 85 is used for abutting against the inner wall of the central hole of the lifting flange 63. For the convenience of the following description, we define the end of the pin 85 that abuts against the inner expansion pin 83 as the first end of the pin 85; the end on the pin 85 that abuts the lifting flange 63 is the second end of the pin 85. The bottom end of the inner expansion pin 83 is of an inverted conical or circular truncated cone-shaped structure, and the end face of the first end of the pin 85 is provided with an inclined surface matched with the bottom end of the inner expansion pin 83.

A retainer ring 88 is arranged in the second through hole, and the retainer ring 88 is connected with the inner wall of the second through hole. The circumferential outer wall of the first end of the stud 85 is provided with a limit projection 851. The outer wall of the pin 85 is sleeved with a spring 86, one end of the spring 86 is abutted to the retainer ring 88, and the other end of the spring 86 is abutted to the limit protrusion 851.

Preferably, the second end of the pin 85 is provided with a steel ball 87, and the steel ball 87 is used for abutting against the inner wall surface of the central hole of the lifting flange 63.

Preferably, the inner diameter of the central hole of the lifting flange 63 is gradually reduced from bottom to top. The lifting flange 63 can be effectively prevented from dropping off from the expansion mechanism 8 in the lifting process of the expansion mechanism 8.

When the workpiece is taken and placed before or after welding, the rotary lifting mechanism 7 needs to lift the upper pressure plate 61, and at this time, the inner expansion pin 83 of the expansion mechanism 8 is driven by the seventh driving device 82 to move downwards to eject the pin 85, so that the steel ball 87 is tightly pressed on the inner wall of the central hole of the lifting flange 63, and the connection between the upper pressure plate 61 and the rotary lifting mechanism 7 is realized. When welding is started, the seventh driving device 82 drives the inner expanding pin 83 to move upwards, the pin 85 retracts into the pin cylinder 84 under the action of the spring 86, and the lifting flange 63 is separated from the rotary lifting mechanism 7.

As shown in fig. 3, 9 and 10, the fixture main body further includes a plug positioning pin mechanism 2, and the plug positioning pin mechanism 2 is used for positioning the workpiece. The plug positioning pin mechanism 2 includes a positioning pin holder 21 and a first spacer 22. The positioning pin base 21 comprises a first connecting plate 211 and a second connecting plate 212 which are vertically connected, and the bottoms of the first connecting plate 211 and the second connecting plate 212 are fixedly connected with the bottom plate 1. A guide sleeve 25 is provided in the space enclosed by the first connecting plate 211 and the second connecting plate 212. The guide sleeve 25 is connected to the dowel seat 21 by means of screws.

The bottom of the guide sleeve 25 is fixedly connected with a first driving device 27, and the first driving device 27 can be a hydraulic oil cylinder. The guide sleeve 25 is provided with an insertion pin 26 therein, that is, the guide sleeve 25 is sleeved on the outer wall of the insertion pin 26, and the insertion pin 26 can slide up and down relative to the guide sleeve 25. The bottom of the plug pin 26 is fixedly connected with an output push rod of the first driving device 27, the top of the plug pin 26 is used for being inserted into a positioning hole of a workpiece, and a guide structure is arranged at the top of the plug pin 26.

Optionally, to facilitate adjustment of the position of the guide sleeve 25 in the horizontal plane (the plane of the coordinate axis X, Y in fig. 3), a number of first spacers 22 of different thicknesses may be provided between the first connecting plate 211 and the guide sleeve 25 and between the second connecting plate 212 and the guide sleeve 25. Of course, in some cases, the first spacer 22 may be provided only between the first connection plate 211 and the guide sleeve 25, or the first spacer 22 may be provided only between the second connection plate 212 and the guide sleeve 25.

As shown in fig. 3 and 11, the jig main body further includes a slide positioning pin mechanism 3, and the slide positioning pin mechanism 3 is also used for positioning the workpiece. The slide positioning pin mechanism 3 includes a reference block 31, a slide pin holder 33, and a slide pin 34. The reference block 31 is fixedly connected with the bottom plate 1, and the side wall of the sliding pin seat 33 is connected with the reference block 31 through a screw. Optionally, a second spacer 32 is disposed between the reference block 31 and the sliding pin seat 33, and the number of the second spacers 32 can be flexibly selected according to the requirement of adjusting the position of the sliding pin seat 33.

Two lugs 331 which are oppositely arranged are arranged at the top of the sliding pin seat 33, and opposite sliding grooves are arranged at the bottoms of opposite surfaces of the two lugs 331. The bottom of the sliding pin 34 is circumferentially provided with a boss matched with the sliding groove, the sliding pin 34 is located between the two lugs 331, and the boss is located in the sliding groove, so that the sliding pin 34 can slide relative to the sliding pin seat 33.

The sliding pin seat 33 is further provided with two kidney-shaped screw holes which are arranged in parallel and are respectively positioned in front of and behind the sliding pin 34. By screwing the screw into the two kidney-shaped screw holes, the screw head can limit the sliding stroke of the sliding pin 34, so that the boss of the sliding pin 34 is limited in the sliding slot of the lug 331.

The line between the slide pin 34 and the plug pin 26 is parallel to the sliding direction of the slide pin 34, so that the slide pin 34 and the plug pin 26 can position the workpiece together. Alternatively, the line connecting the slide pin 34 and the plug pin 26 is located in the sliding direction of the slide pin 34. Before the workpiece is placed in the clamp body, the plug pin 26 is ejected out, the workpiece is positioned together with the sliding pin 34, and after the workpiece is welded, the plug pin 26 retracts, so that the workpiece can be conveniently taken.

The structural arrangement of the plug positioning pin mechanism 2 and the slide positioning pin mechanism 3 in the above embodiment can effectively solve the problem that the slide pin 34 or the plug pin 26 of the clamp main body cannot be positioned due to the fact that the machining precision cannot meet the requirement, and also effectively solve the problem that the positioning cannot be performed due to the machining error of the workpiece positioning hole.

As shown in fig. 3 and 12, the main body of the jig further includes a casting support mechanism 5, and the casting support mechanism 5 is used for supporting a casting portion of the workpiece. Referring to fig. 1, the casting 92 of the battery tray 9 needs to be friction welded to the large pallet 93, and because the casting 92 is hollow inside, if the casting 92 is unsupported, the friction welding will collapse the casting 92, and support must be provided inside the casting 92.

The casting support mechanism 5 includes a mounting block 51, a third drive device 52, a transfer plate 54, a fourth drive device 55, and a support block 58. The mounting block 51 is fixedly mounted on the base plate 1. The mounting block 51 is fixedly mounted with a first slide rail 511 and a third driving device 52 on the upper surface. Third drive 52 may be a hydraulic ram. The output ram of the third drive 52 is fixedly connected to a connecting head by means of a thread, which is fixedly connected to the transport plate 54 by means of a cylindrical joint. The bottom of the conveying plate 54 is fixedly connected with a first sliding block 541 through a screw, and the first sliding block 541 is connected with the first sliding rail 511 in a sliding manner. The conveying plate 54 can slide relative to the mounting block 51 under the drive of the third drive device 52.

The conveying plate 54 is fixedly provided with a fourth driving device 55 and two supporting seats 56, and the two supporting seats 56 are respectively arranged at two sides of the fourth driving device 55. An auxiliary driving support device 57 is fixedly installed on each support seat 56, and the auxiliary driving support device 57 is arranged below the support block 58. The fourth driving means 55 and the auxiliary driving support means 57 are both jacking cylinders. The output push rods of the fourth driving means 55 and the auxiliary driving support means 57 are connected to the bottom of the supporting block 58. The connecting screws of the auxiliary driving supporting device 57 and the supporting block 58 are not locked, so that a certain shaking gap of the supporting block 58 is ensured.

When the casting supporting mechanism 5 works, the third driving device 52 firstly pushes the conveying plate 54 to slide so that the supporting block 58 moves to the position below the part of the workpiece to be supported, then the fourth driving device 55 jacks up the supporting block 58 to enable the supporting block 58 to be in self-adaptive fit with the workpiece, and finally the output end of the auxiliary driving supporting device 57 is locked after being jacked up and touching the supporting block 58, so that the casting 92 is effectively supported in a fit manner. After the welding of the workpieces is completed, the auxiliary driving support device 57, the fourth driving device 55 and the third driving device 52 are sequentially restored to the initial state.

As shown in fig. 3, 13 and 14, the fixture main body further includes a pressing mechanism 4, and the pressing mechanism 4 is used for pressing the welding seam 91 of the workpiece frame. The pressing mechanism 4 includes a pressing plate 41, a lever arm 43, a support rod 47, a second driving device 46, and a stroke switch 48. The second driving device 46 is fixedly installed on the base plate 1, and the second driving device 46 may be a hydraulic cylinder or an air cylinder. The travel switch 48 is mounted on a sensor carrier which is fixedly mounted on the second drive means 46.

The lever arm 43 includes a first acting arm, a second acting arm, and a connecting section. First effect arm and the mutual parallel arrangement of second effect arm, first effect arm and second effect arm are connected to the linkage segment, and the linkage segment all has certain contained angle with first effect arm and second effect arm. The end of the first actuation arm is connected to a pressure plate 41, the pressure plate 41 being used to compress the weld seam 91. The end of the second actuation arm is hinged to the output of the second drive means 46. The bottom of the support bar 47 is hinged to the outer housing of the second drive means 46 and the top of the support bar 47 is hinged to the connecting section of the lever arm 43.

The travel switch 48 is used to detect the position of the lever arm 43. Specifically, the second driving device 46 can drive the lever arm 43 to rotate, when a welding head walks over during welding of a workpiece, the lever arm 43 drives the pressure plate 41 to lift, the joint of the first acting arm and the connecting section is in contact with the detection part of the travel switch 48, the welding equipment can continue to walk forwards after receiving a signal, and otherwise, the welding equipment is stopped to alarm. Since the jig main body generally includes the plurality of pressing mechanisms 4, normally, the lever arms 43 of the plurality of pressing mechanisms 4 are sequentially lifted up in accordance with the traveling direction of the bonding head.

Preferably, the pressing mechanism 4 further comprises a hinge 42, the bottom of the hinge 42 is fixedly connected with the pressing plate 41, and the top of the hinge 42 is connected with the lever arm 43. The top of the swivel joint 42 is of cylindrical configuration and the end of the first actuating arm of the lever arm 43 is provided with a cylindrical slot into which the cylindrical configuration of the top of the swivel joint 42 snaps. The end of the first actuation arm is further provided with a stop screw hole 431 which extends through to the cylindrical slot, the stop screw hole 431 being used for screwing in a stop screw 45 to press the movable joint 42. The movable joint 42 is adopted to connect the pressure plate 41 and the lever arm 43, so that the position of the pressure plate 41 relative to the lever arm 43 along the welding seam direction of the workpiece can be conveniently adjusted, and a better pressing effect is achieved. Optionally, the movable joint 42 is provided with a limiting groove at the top, and the screw head of the limiting screw hole 431 can extend into the limiting groove, so that the movable joint 42 can adapt to the workpiece, and the movable joint 42 can be prevented from sliding out of the cylindrical groove at the end of the first acting arm.

In conclusion, the invention effectively solves the technical problems that a large-area workpiece deforms in welding, the workpiece cannot be positioned due to insufficient manufacturing precision of the workpiece or a tool fixture, a workpiece casting cannot be well supported, and the like.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to be within the scope of the present disclosure.

Claims

1. A tooling fixture, characterized in that it comprises a fixture body and a lifting device, the fixture body comprising a bottom plate (1), a pressing mechanism (4) and a magnetic attraction device (11), the magnetic attraction device (11) and the pressing mechanism (4) is arranged on the bottom plate (1), the pressing mechanism (4) is used for pressing the workpiece, and the magnetic attraction device (11) is used to support the bottom of the workpiece ;

The lifting device includes an upper pressing plate (61) and a rotating lifting mechanism (7). The upper pressing plate (61) is used to cover the top of the workpiece and magnetically attract the magnetic attraction device (11). The pressing plate (61) is detachably connected to the rotating lifting mechanism (7), and the rotating lifting mechanism (7) is used to drive the upper pressing plate (61) to move.

2. The fixture according to claim 1, characterized in that, the rotating lifting mechanism (7) comprises a base (701), a fifth driving device (702), a rotating arm (703), a sixth driving device ( 704) and a lifting arm (705), the fifth driving device (702) is connected to the base (701), and one end of the rotating arm (703) is connected to the output end of the fifth driving device (702) hinged, the other end of the rotating arm (703) is hinged with the base (701);

The sixth driving device (704) and the lifting arm (705) are both arranged on the rotating arm (703), and the sixth driving device (704) is drivingly connected with the lifting arm (705), so One end of the lifting arm (705) is slidably connected with the rotating arm (703), and the other end of the lifting arm (705) is used for connecting the upper pressing plate (61).

3. The fixture according to claim 2, wherein the lifting device further comprises a mounting plate (709), an expansion mechanism (8) and a lifting flange (63), and the mounting plate (709) is connected to The lifting arm (705), the lifting flange (63) are connected to the upper pressing plate (61), the expansion and tightening mechanism (8) is provided on the mounting plate (709), and the expansion and tightening mechanism One end of (8) is used to extend into the central hole of the lifting flange (63) for expansion and tight connection with the lifting flange (63).

4. The fixture according to claim 3, characterized in that, the expansion mechanism (8) comprises a seventh drive device (82), a pin cylinder (84), an inner expansion pin (83) and a column pin (85) ), the seventh driving device (82) and the pin cylinder (84) are both connected with the mounting plate (709), and the inner expansion pin (83) is drivingly connected with the seventh driving device (82) , the pin cylinder (84) is sleeved on the outer wall of the inner expansion pin (83), one end of the column pin (85) is used to collide with the inner expansion pin (83), and the other end of the column pin (85) One end is used to interfere with the inner wall of the central hole of the lifting flange (63).

5. The tooling fixture according to claim 1, characterized in that, the fixture main body further comprises a plug-in positioning pin mechanism (2), and the plug-in positioning pin mechanism (2) comprises a first driving device (27), A guide sleeve (25) and a plug-in pin (26), the side wall of the guide sleeve (25) is connected with the bottom plate (1) through a positioning pin seat (21), and the first driving device (27) is provided at the The bottom of the guide sleeve (25) is sleeved on the outer wall of the plugging pin (26), and the plugging pin (26) is drivingly connected with the first driving device (27).

6. The tooling fixture according to claim 5, characterized in that, the fixture body further comprises a sliding positioning pin mechanism (3), and the sliding positioning pin mechanism (3) comprises a sliding pin seat (33) and a sliding pin ( 34), the sliding pin seat (33) is arranged on the bottom plate (1), the sliding pin (34) is slidably connected with the sliding pin seat (33), and the sliding pin (34) is connected with the The connecting line between the plugging pins (26) is parallel to the sliding direction of the sliding pins (34).

7. The tooling fixture according to claim 6, characterized in that, the top of the sliding pin seat (33) is provided with two oppositely arranged lugs (331), and the opposite surfaces of the two lugs (331) There are opposite sliding grooves, the bottom of the sliding pin (34) is provided with a boss, and the boss is located in the sliding groove.

8. The tooling fixture according to claim 1, characterized in that, the fixture body further comprises a casting support mechanism (5), and the casting support mechanism (5) comprises a mounting block (51), a third driving device (52) ), a conveying plate (54), a fourth driving device (55) and a support block (58), the mounting block (51) is arranged on the bottom plate (1), the conveying plate (54) and the first Three driving devices (52) are all arranged on the mounting block (51), the conveying plate (54) is slidably connected to the mounting block (51), and the third driving device (52) is connected to the conveying plate (54) Driving connection, the fourth driving device (55) is arranged on the conveying plate (54), the fourth driving device (55) is drivingly connected with the supporting block (58), the supporting block (58) Casting (92) for supporting the workpiece.

9. The fixture according to claim 8, characterized in that, the casting support mechanism (5) further comprises a support seat (56) and at least two auxiliary drive support devices (57), two of the auxiliary drive support A device (57) is arranged on the support seat (56) and is located on both sides of the fourth drive device (55), and the auxiliary drive support device (57) is used to support the support block (57). 58) Bottom.

10. The tooling fixture according to claim 1, characterized in that, the fixture body further comprises a pressing mechanism (4), and the pressing mechanism (4) comprises a pressing plate (41), a lever arm (43), a support a rod (47), a second drive device (46) and a travel switch (48);

One end of the lever arm (43) is connected with the pressing plate (41), and the pressing plate (41) is used for pressing the welding seam (91) of the workpiece, and the other end of the lever arm (43) is connected to the pressing plate (41). The second driving device (46) is drivingly connected, the lever arm (43) is hinged with the support rod (47), and the travel switch (48) is used to detect the position of the lever arm (43).

11. The fixture according to claim 10, characterized in that, the pressing mechanism (4) further comprises a hinge (42), the bottom of the hinge (42) is connected with the pressing plate (41), so The top of the hinge (42) is provided with a cylindrical structure, the lever arm (43) is provided with a cylindrical groove, and the cylindrical structure of the hinge (42) is inserted into the cylindrical groove of the lever arm (43). Inside.