CN218225139U - Sheet metal welding jig - Google Patents

Abstract

The utility model relates to a welding jig technical field especially relates to a sheet metal welding jig. The welding device comprises a welding bottom plate, a welding cover plate, a compression pull rod and a driving unit, wherein the welding bottom plate is used for bearing a metal sheet to be welded, and a first compression hole is formed in the welding bottom plate; the welding cover plate is arranged at the top of the welding bottom plate, and the welding bottom plate is matched with the welding cover plate to clamp the metal sheet; one end of the compression pull rod penetrates through the welding cover plate and the welding bottom plate, and the bottom surface of the other end of the compression pull rod is abutted to the welding cover plate; the driving unit is arranged at the bottom of the welding bottom plate and connected with the pressing pull rod, and the driving unit is configured to drive the pressing pull rod to move downwards or upwards. The driving unit is located at the bottom of the welding bottom plate, interference to the laser welding head can not be generated in the moving process, the laser welding head can be arranged and moved according to actual welding needs, and the difficulty of arranging the laser welding head is reduced. The drive unit can make the compression pull rod compress tightly the welding apron with compressing tightly the pull rod cooperation.

Description

Sheet metal welding jig

Technical Field

The utility model relates to a welding jig technical field especially relates to a sheet metal welding jig.

Background

Laser welding is a method of welding using a focused laser beam as an energy source to bombard a weldment with the heat generated. Because the laser has optical properties such as refraction and focusing, the laser welding is very suitable for welding miniature parts and parts with poor accessibility. Laser welding also has the characteristics of low heat input, small welding deformation, no influence of electromagnetic field and the like. In view of the influence of factors such as cost reduction, weight reduction, efficiency improvement and the like, thin-wall parts are increasingly widely applied, and particularly, welded structures on automobiles are mostly thin-wall structural parts. For the welding of thin-wall parts, a laser welding method is used, so that not only can a high-strength continuous and smooth welding seam be obtained, but also the tensile strength of a welded part can be increased, and the effects of reducing weight, saving materials and improving performance are achieved.

However, the metal sheet is easy to deform during welding due to the characteristics of large area and thin thickness, and the welding quality is affected. Although the sheet metal welding and positioning device in the prior art can position the sheet metal clamp, the sheet metal welding and positioning device occupies a large space and is not easy to arrange a laser welding head.

Therefore, a welding fixture for thin metal plates is needed to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sheet metal welding jig, it is little to occupy sheet metal top space, easily arranges the laser bonding tool.

To achieve the purpose, the utility model adopts the following technical proposal:

a sheet metal welding fixture, comprising:

the welding bottom plate is used for bearing a metal sheet to be welded;

the welding cover plate is arranged at the top of the welding bottom plate, and the welding bottom plate is matched with the welding cover plate to clamp the metal sheet;

one end of the compression pull rod penetrates through the welding cover plate and the welding bottom plate, and the bottom surface of the other end of the compression pull rod is abutted to the welding cover plate;

the driving unit is arranged at the bottom of the welding bottom plate and connected with the compression pull rod, and the driving unit is configured to drive the compression pull rod to move downwards or upwards.

As a preferable technical solution of the above metal sheet welding jig, the driving unit includes an air cylinder, and the air cylinder is fixedly connected to one end of the pressing pull rod.

As a preferable technical solution of the above metal sheet welding jig, the driving unit further includes a floating pin, one end of the floating pin is connected to the pressing pull rod, and the other end of the floating pin is connected to a cylinder rod of the cylinder.

As an optimal technical scheme of the metal sheet welding clamp, the compression pull rod comprises a pulling rod and a pressing block, one end of the pulling rod is fixedly connected with the pressing block, the other end of the pulling rod is connected with the driving unit, and the bottom surface of the pressing block can be abutted to the welding cover plate.

As an optimal technical scheme of the metal sheet welding clamp, the metal sheet welding clamp further comprises a jig positioning pin, and one end of the jig positioning pin penetrates through the welding cover plate and then penetrates into the welding bottom plate.

As an optimal technical scheme of the metal sheet welding clamp, the metal sheet welding clamp further comprises a material positioning pin, and one end of the material positioning pin penetrates through the welding cover plate, the metal sheet and the welding bottom plate.

As a preferred technical scheme of the metal sheet welding fixture, a material boss is further arranged on the welding bottom plate and is opposite to a position to be welded of the metal sheet.

As a preferable technical solution of the above metal sheet welding jig, the welding bottom plate is provided with a shielding gas channel, and the shielding gas channel is disposed on at least one side of the material boss.

As a preferred technical solution of the above sheet metal welding jig, a first welding region through groove is provided on the welding cover plate, and the first welding region through groove can expose a to-be-welded portion of the sheet metal.

As a preferable technical solution of the above sheet metal welding jig, the sheet metal welding jig further includes a base, the bottom plate is disposed on a top of the base, and the driving unit is disposed in a space formed by the base.

The utility model discloses beneficial effect:

the driving unit is located at the bottom of the welding bottom plate, so that the space above the metal sheet cannot be occupied, interference cannot be generated in the moving process of the laser welding head, the laser welding head can be arranged and moved according to actual welding needs, and the difficulty of arranging the laser welding head is reduced. The driving unit can enable the compression pull rod to compress the welding cover plate by matching with the compression pull rod, and the welding cover plate can be compressed without moving in the welding process, so that the aim of clamping the metal sheet by the welding cover plate and the welding bottom plate is fulfilled. Because sheet metal is compressed tightly by the welding apron when the welding, the deflection of sheet metal is less after the welding like this, satisfies the design requirement of angularity.

Because this sheet metal welding jig mainly used sheet metal stitch welding, consequently, this sheet metal welding jig's setting can make sheet metal closely laminate, effectively guarantees welded quality and effect.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a sheet metal welding jig according to an embodiment of the present invention;

fig. 2 is a stepped cross-sectional view of a sheet metal welding jig according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a welded cover plate according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a welding baseplate provided in an embodiment of the present invention;

fig. 5 is a schematic view illustrating a connection between the pressing rod and the driving unit according to an embodiment of the present invention.

In the figure:

1. welding a bottom plate; 11. a material boss; 12. a first bottom plate positioning pin hole; 13. a second bottom plate positioning pin hole; 14. a first compression hole; 2. welding a cover plate; 21. a second compression hole; 22. a first cover plate positioning pin hole; 23. a second cover plate positioning pin hole; 24. a first welding area through groove; 3. compressing the pull rod; 31. pulling a rod; 32. briquetting; 4. a cylinder; 5. a floating pin; 6. a supporting base; 7. a support column; 8. a metal thin plate; 9. and (4) laser welding heads.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected", "connected" and "fixed" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

In the prior art, a pressing device is usually arranged above a metal sheet to be welded, the pressing device acts to press the metal sheet, but the arrangement position of the pressing device can cause most of the space above the metal sheet to be occupied, and when the welding area of the metal sheet is large, the arrangement of a laser welding head has certain difficulty.

Therefore, the embodiment of the present invention provides a metal thin plate welding fixture to solve the above technical problems.

As shown in fig. 1 and 2, the sheet metal welding jig includes a welding base plate 1, a welding cover plate 2, a pressing pull rod 3, and a driving unit, wherein the welding base plate 1 is used for carrying a sheet metal 8 to be welded; the welding cover plate 2 is arranged at the top of the welding base plate 1, and the welding base plate 1 is matched with the welding cover plate 2 to clamp the metal sheet 8; one end of the compression pull rod 3 penetrates through the welding cover plate 2 and the welding bottom plate 1, the bottom surface of the other end of the compression pull rod is abutted to the welding cover plate 2, and the compression pull rod 3 can compress the welding cover plate 2 to clamp the metal sheet 8; the driving unit is connected with the pressing pull rod 3 and is configured to be capable of pulling the pressing pull rod 3 downwards or pushing the pressing pull rod 3 upwards.

The driving unit is located at the bottom of the welding bottom plate 1, so that the space above the metal sheet 8 cannot be occupied, interference to the laser welding head 9 cannot be generated in the moving process, the laser welding head 9 can be arranged and moved according to actual welding needs, and the difficulty of arranging the laser welding head 9 is reduced. The driving unit and the compression pull rod 3 are matched to enable the compression pull rod 3 to compress the welding cover plate 2, the welding cover plate 2 can be compressed without moving in the welding process, and therefore the purpose that the welding cover plate 2 and the welding bottom plate 1 clamp the metal sheet 8 is achieved. Because sheet metal 8 is compressed tightly by welding apron 2 when the welding, the deflection of sheet metal 8 is less after the welding like this, satisfies the design requirement of angularity.

The metal sheet welding fixture further comprises a base, the welding bottom plate 1 is arranged at the top of the base, and the driving unit is arranged in a space formed by the base. The base includes supporting seat 6 and support column 7, wherein 7 both ends of support column respectively with welded bottom plate 1 and 6 fixed connection of supporting seat, supporting seat 6 is located welded bottom plate 1's bottom, and support column 7 sets up at four edges of supporting seat 6, has formed the space that holds drive unit between support column 7, supporting seat 6 and the welded bottom plate 1, can accomodate drive unit to the space in like this, avoids drive unit to expose, makes sheet metal welding jig's structure more compact.

Because this sheet metal welding jig mainly used sheet metal 8 stitch welding's clamping, consequently, this sheet metal welding jig's setting can make sheet metal 8 closely laminate, effectively guarantees welded quality and effect.

Specifically, in the present embodiment, as shown in fig. 2, 3 and 4, the welding base plate 1 is provided with a first pressing hole 14, the welding cover plate 2 is provided with a second pressing hole 21, and after the welding base plate 1 and the welding cover plate 2 are covered, the first pressing hole 14 and the second pressing hole 21 are coaxially arranged; one end of the compression pull rod 3 passes through the second compression hole 21 and the first compression hole 14 and then is connected with the driving unit. Wherein the diameter of the second pressing hole 21 is the same as the diameter of the first pressing hole 14, which facilitates the processing of the welding base plate 1 and the welding cover plate 2.

Optionally, the driving unit comprises a cylinder 4, and the cylinder 4 is fixedly connected with one end of the pressing pull rod 3. The cylinder 4 provides driving force for compressing the pull rod 3, so that the welding cover plate 2 can be compressed, and the aim of clamping the metal sheet 8 is fulfilled. Of course, in other embodiments, the drive unit may also comprise a linear motor.

For example, the pressing pull rod 3 comprises a pull rod 31 and a pressing block 32, one end of the pull rod 31 is fixedly connected with the pressing block 32, the other end of the pull rod 31 is connected with the driving unit, and the length or width of the bottom surface of the pressing block 32 is greater than the diameter of the second pressing hole 21. It can be understood that the pressing pull rod 3 is in a T-shaped structure, so that the purpose that the pressing pull rod 3 can move downwards under the action of the driving unit to press the welding cover plate 2 can be achieved.

Sheet metal welding jig still includes the tool locating pin, and the effect of tool locating pin is with welding apron 2 and 1 location of welding baseplate to compressing tightly the installation of pull rod 3, tool locating pin one end penetrates after welding apron 2 and penetrates in welding baseplate 1. Specifically, be provided with first apron location pinhole 22 on the welding apron 2, be provided with first bottom plate location pinhole 12 on the welding baseplate 1, after welding baseplate 1 closed with the welding apron 2 lid, first apron location pinhole 22 and the coaxial setting of first bottom plate location pinhole 12, the one end of tool locating pin can pass and stretch into in first bottom plate location pinhole 12 behind the first apron location pinhole 22.

The metal sheet welding fixture further comprises a material positioning pin, and the material positioning pin is used for positioning the metal sheet 8, the welding cover plate 2 and the welding bottom plate 1 and preventing the metal sheet 8 from moving relative to the welding cover plate 2 and the welding bottom plate 1. One end of the material positioning pin penetrates through the welding cover plate 2 and the metal sheet 8 and then penetrates into the welding bottom plate 1. Specifically, the welding cover plate 2 is provided with a second cover plate positioning pin hole 23, the welding base plate 1 is provided with a second base plate positioning pin hole 13, the welding base plate 1 and the welding cover plate 2 are covered and closed, the second cover plate positioning pin hole 23 and the second base plate positioning pin hole 13 are coaxially arranged, and one end of the material positioning pin can penetrate through the second cover plate positioning pin hole 23 and the metal thin plate 8 and then extend into the second base plate positioning pin hole 13.

Further, in this embodiment, the welding base plate 1 is further provided with a material boss 11, and the material boss 11 is directly opposite to the to-be-welded position of the metal sheet 8. Because the material boss 11 is over against the to-be-welded part of the metal sheet 8, the material boss 11 is matched with the driving unit for use, and the material boss and the driving unit are in gapless fit, so that the welding positions are in close contact, and the phenomenon of false welding caused by sinking of the metal sheet 8 positioned below is prevented. Optionally, the material boss 11 is in a strip-shaped structure. This is suitable for the need of welding a long weld seam to the metal sheet 8.

The welding bottom plate 1 is provided with a protective gas channel which is arranged on one side or two sides of the material boss 11. And protective gas is introduced to the welding part of the metal sheet 8 in the welding process, so that the phenomenon of yellowing or welding breakage after welding can be prevented.

For the convenience of welding, it should be noted that the welding cover plate 2 is provided with a first welding area through groove 24, and the first welding area through groove 24 can expose the to-be-welded part of the metal sheet 8, so as to facilitate the welding of the laser welding head 9.

Further, as shown in fig. 5, the driving unit further includes a floating pin 5, one end of the floating pin 5 is connected to the compression link 3, and the other end of the floating pin 5 is connected to a cylinder rod of the cylinder 4. After the compression pull rod 3 descends to the position of the welding cover plate 2, due to the existence of the floating pin 5, the floating pin 5 plays a role in buffering in the descending process of the air cylinder rod, so that hard impact between the compression pull rod 3 and the welding cover plate 2 can be prevented, and the compression pull rod 3 and the welding cover plate 2 are prevented from colliding to cause deformation of the metal sheet 8 by the arrangement of the floating pin 5.

The metal sheet welding fixture is used for stacking at least two metal sheets 8 together, a single-mode laser is used, the laser power is 350-400W, the welding speed is 300-700 mm/s, and the welding is carried out by process parameters with protective gas on the back surface, and the welded effect can show that the grain of a welding area is finer than that of a base material in terms of microstructure. Therefore, the utility model discloses when guaranteeing welding quality and welding effect, realized sheet metal 8's effective welding.

In addition, the foregoing is only the preferred embodiment of the present invention and the technical principles applied thereto. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims (10)

1. A sheet metal welding jig, comprising:

a welding bottom plate (1) for carrying a metal sheet (8) to be welded;

the welding cover plate (2) is arranged at the top of the welding bottom plate (1), and the welding bottom plate (1) is matched with the welding cover plate (2) to clamp the metal sheet (8);

one end of the compression pull rod (3) penetrates through the welding cover plate (2) and the welding bottom plate (1), and the bottom surface of the other end of the compression pull rod is abutted to the welding cover plate (2);

the driving unit is arranged at the bottom of the welding bottom plate (1), connected with the pressing pull rod (3) and configured to drive the pressing pull rod (3) to move downwards or upwards.

2. Sheet metal welding fixture according to claim 1, characterized in that the drive unit comprises a cylinder (4), and the cylinder (4) is fixedly connected to one end of the hold-down tie rod (3).

3. Sheet metal welding fixture according to claim 2, characterized in that the drive unit further comprises a floating pin (5), one end of the floating pin (5) being connected to the hold-down tie rod (3), the other end of the floating pin (5) being connected to the cylinder rod of the cylinder (4).

4. The sheet metal welding fixture according to claim 1, characterized in that the hold-down pull rod (3) comprises a pull rod (31) and a pressing block (32), one end of the pull rod (31) is fixedly connected with the pressing block (32), the other end of the pull rod (31) is connected with the driving unit, and the bottom surface of the pressing block (32) can abut against the welding cover plate (2).

5. The sheet metal welding fixture of claim 1, further comprising a jig positioning pin, wherein one end of the jig positioning pin penetrates into the welding bottom plate (1) after penetrating through the welding cover plate (2).

6. The sheet metal welding fixture according to claim 1, further comprising a material positioning pin, one end of which passes through the welding cover plate (2), the sheet metal (8) and the welding base plate (1).

7. The sheet metal welding fixture according to claim 1, characterized in that a material boss (11) is further arranged on the welding base plate (1), and the material boss (11) is directly opposite to the position to be welded of the sheet metal (8).

8. The sheet metal welding fixture according to claim 7, characterized in that a shielding gas channel is provided on the welding base plate (1), said shielding gas channel being provided on at least one side of said material boss (11).

9. Sheet metal welding jig according to claim 1, characterized in that the welding cover plate (2) is provided with a first welding area through slot (24), the first welding area through slot (24) being capable of exposing a to-be-welded portion of the sheet metal (8).

10. Sheet metal welding fixture according to claim 1, characterized in that it further comprises a base, the welding baseplate (1) being arranged on top of said base, the drive unit being arranged in a space formed by said base.

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