Precise welding device for aluminum magnesium alloy material

Abstract

The invention discloses a precise welding device for an aluminum magnesium alloy material, which comprises a base, a bracket is mounted on the base, and a welding positioning assembly is mounted on the bracket; the welding positioning assembly comprises two clamping positioning assemblies, the clamping positioning assembly on the lower side is fixed to the support, and the clamping positioning assembly on the upper side is fixedly installed on the lifting control assembly. The clamping and positioning assembly comprises a shell, a welding seat is rotationally mounted on the shell, and a clamping assembly is arranged on the welding seat; the clamping assembly comprises a containing groove formed in the welding base, at least three sets of clamping heads are installed in the containing groove, each clamping head comprises a sliding groove formed in the top of the containing groove, a sliding block is installed in the sliding groove in a sliding mode, a first spring is fixed between the sliding groove and the sliding block, the sliding block is fixed to a connecting rod, and the connecting rod is connected with the clamping assembly. A first clamping rod and a second clamping rod are fixed to the connecting rod.

Description

Technical Field

[0001] The invention relates to the technical field of welding, and in particular to a precision welding device for aluminum-magnesium alloy materials. Background Art

[0002] Welding, also known as fusion, is a process of joining metal materials at high temperature and under heating. The welding precision requirements for non-ferrous metal materials, especially some new magnesium alloys and aluminum alloys, are particularly high.

[0003] Common magnesium-aluminum alloy material welding includes pipe-to-pipe welding, pipe-to-flange butt welding, and flange-to-flange butt welding. The existing welding workbench usually fixes one of the alloy materials by a three-jaw chuck, and the other is manually butt-positioned before welding. In the above welding process, the positioning effect is very unstable, and the welder needs to have rich experience to weld high-quality products. Summary of the invention

[0004] The object of the present invention is to provide a precision welding device for aluminum-magnesium alloy materials, so as to overcome the above-mentioned defects in the prior art.

[0005] A precision welding device for aluminum-magnesium alloy materials according to the present invention comprises a base, a bracket is mounted on the base, and a welding positioning assembly is mounted on the bracket; The welding positioning assembly includes two clamping positioning assemblies, the lower clamping positioning assembly is fixed to the bracket, and the upper clamping positioning assembly is fixedly mounted on the lifting control assembly; The clamping and positioning assembly comprises a housing, a welding seat is rotatably mounted on the housing, and a clamping assembly is arranged on the welding seat; The clamping assembly includes a receiving groove opened in the welding seat, at least three groups of clamping heads are installed in the receiving groove, the clamping head includes a slide groove arranged at the top of the receiving groove, a slider is slidably installed in the slide groove, a No. 1 spring is fixed between the slide groove and the slider, the slider is fixed to a connecting rod, a No. 1 clamping rod and a No. 2 clamping rod are fixed on the connecting rod, the No. 1 clamping rod and the No. 2 clamping rod both pass through the welding seat and are slidably connected to the welding seat, a No. 1 positioning head is fixed at the end of the No. 1 clamping rod, and a No. 2 positioning head is fixed at the end of the No. 2 clamping rod, and each of the clamping A pushing block is provided in the middle position of the head, and the pushing block is designed as a truncated cone-like inclined surface. A threaded rod is fixed at the bottom of the pushing block, and the threaded rod passes through the welding seat and is threadedly connected to the welding seat. A handle is fixed at the end of the threaded rod. After manually inserting the aluminum-magnesium alloy pipe into the outer shell, the handle is manually turned to drive the threaded rod to rotate, and the pushing block is driven to rotate and rise through the threaded connection between the threaded rod and the welding seat. After the pushing block rises, it will push each of the clamping heads to move outward, thereby driving the No. 2 positioning head and the No. 1 positioning head to resist the inner wall of the aluminum-magnesium alloy pipe to achieve clamping.

[0006] Preferably, an indicating mechanism is provided on each clamping head, and the indicating mechanism includes a No. 1 contact installed on the No. 1 positioning head and a No. 2 contact on the No. 2 positioning head. A power supply is fixedly installed in the storage groove, and an indicating light whose number is the same as that of the indicating mechanism is fixedly installed on the welding seat. Each of the indicating mechanisms forms a plurality of parallel circuits, and is powered uniformly by the power supply.

[0007] Preferably, a bearing is installed between the welding seat and the housing to achieve a rotational connection therebetween.

[0008] Preferably, the lifting control assembly includes a lifting slot provided on the bracket, a lifting seat is slidably installed in the lifting slot, the lifting seat is fixed to the shell on the upper side, a No. 2 spring is fixed on the lifting seat, the other end of the No. 2 spring is fixed to the pressure block, a push block is fixed on the pressure block, the pressure block is slidably installed in the lifting slot, at least one slot penetrating the bracket is provided on one side of the lifting slot, an insert block is slidably installed in the slot, and a locking slot is provided in the pressure block. When the two aluminum-magnesium alloy materials are against each other, the push block is grasped to push the pressure block so that the locking slot is aligned with the slot closest to the bottom, the No. 2 spring is compressed, and the corresponding insert block is pushed to be inserted into the locking slot to achieve locking. At this time, the compressed No. 2 spring applies pressure to the lifting seat and finally transmits it to the space between the two aluminum-magnesium alloy materials. At this time, manually rotating one of the handles can drive the welding seat and the two aluminum-magnesium alloy materials to rotate together, which is convenient for welding.

[0009] Preferably, a positioning table is fixed on the welding seat, and locking holes are provided on the positioning table with the same number as the No. 1 clamping rods. The No. 1 clamping rods pass through the locking holes. The positioning table can be used to place the aluminum-magnesium alloy flange, and each of the No. 1 positioning heads is used to clamp the inner diameter of the aluminum-magnesium alloy flange.

[0010] Preferably, a lifting plate is fixedly arranged on the upper shell.

[0011] The beneficial effects of the present invention are: 1. Divide the welding positioning assembly into two clamping positioning assemblies to make the positioning of the two aluminum-magnesium alloy materials more accurate.

[0012] 2. The clamping assembly includes a storage groove provided in the welding seat, in which at least three groups of clamping heads are installed, and the clamping head includes a slide groove provided at the top of the storage groove, in which a slider is slidably installed, and the slider is fixed to a connecting rod, and a No. 1 clamping rod and a No. 2 clamping rod are fixed on the connecting rod, and two-point fixation on one side is achieved by the No. 1 clamping rod and the No. 2 clamping rod, which is more stable when clamping and fixing the aluminum-magnesium alloy pipe fittings.

[0013] 3. An indicating mechanism is arranged on the clamping head, and the indicating mechanism includes a No. 1 contact installed on the No. 1 positioning head and a No. 2 contact on the No. 2 positioning head. A power supply is fixedly installed in the storage slot, and an indicating light with the same number as the indicating mechanism is fixedly installed on the welding seat. Each indicating mechanism forms a plurality of parallel circuits, which are uniformly powered by the power supply. The No. 1 contact and the No. 2 contact are the disconnecting parts of each parallel circuit. When the No. 1 positioning head and the No. 2 positioning head of one of the clamping heads contact the aluminum-magnesium alloy pipe fitting at the same time, the parallel circuit will be closed and energized, and the corresponding indicating light will light up, and the clamping head will be clamped relatively well on the inner wall of the aluminum-magnesium alloy pipe fitting. If an indicating light is not on, the aluminum-magnesium alloy pipe fitting needs to be manually pulled out to adjust the position to better realize the center positioning of the aluminum-magnesium alloy pipe fitting, thereby ensuring the accurate center positioning of the aluminum-magnesium alloy pipe fitting and ensuring the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a first schematic diagram of the appearance of the present invention; Figure 2 is a second schematic appearance diagram of the present invention; Figure 3 It is a schematic diagram of the structure inside the clamping and positioning component; Figure 4 It is a schematic diagram of the cross-sectional structure inside the clamping and positioning component; Figure 5 It is a circuit diagram of the indicating mechanism; Figure 6 It is a cross-sectional view of the internal structure of the pressure block.

[0015] In the figure: 11, base; 12, bracket; 13, handle; 14, threaded rod; 15, shell; 16, welding seat; 17, indicator light; 18, positioning platform; 19, locking mouth; 20, No. 1 clamping rod; 21, No. 1 positioning head; 22, lifting seat; 23, No. 2 spring; 24, pressure block; 25, push block; 26, insert block; 27, bearing; 28, No. 2 clamping rod; 29, No. 2 positioning head; 30, No. 2 contact; 31, No. 1 contact; 32, push block; 33, storage slot; 34, power supply; 35, slider; 36, slide slot; 37, connecting rod; 38, No. 1 spring; 39, lifting plate; 40, lifting slot; 50, clamping and positioning assembly; 60, lifting control assembly. DETAILED DESCRIPTION

[0016] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described in conjunction with the embodiments below. It should be understood that the following text is only used to describe one or several specific embodiments of the present invention, and does not strictly limit the scope of protection of the specific claims of the present invention. As used herein, the terms up, down and left, right are not limited to their strict geometric definitions, but include reasonable and inconsistent tolerances for machining or human errors. The specific features of the precision welding device for aluminum-magnesium alloy materials are described in detail below: Reference Figure 1-Figure 6 A precision welding device for aluminum-magnesium alloy materials comprises a base 11, a bracket 12 is mounted on the base 11, a welding positioning assembly is mounted on the bracket 12, and the welding positioning assembly is used for positioning two aluminum-magnesium alloy materials for subsequent welding operations; In order to make the positioning of the two aluminum-magnesium alloy materials more accurate, the welding positioning assembly is intentionally divided into two clamping positioning assemblies 50. The lower clamping positioning assembly 50 is fixed to the bracket 12, and the upper clamping positioning assembly 50 is fixedly installed on the lifting control assembly 60. Each clamping positioning assembly 50 is used to fix an aluminum-magnesium alloy material. The lifting control assembly 60 controls the lifting of the upper clamping positioning assembly 50 to adapt to aluminum-magnesium alloy materials of different sizes. In this application, there are three requirements for aluminum-magnesium alloy materials used for welding, one is aluminum-magnesium alloy tube to aluminum-magnesium alloy tube, another is aluminum-magnesium alloy tube to flange, and the other is flange to flange. In traditional welding processes, these three requirements require three different welding devices. Based on this requirement, in this application, the inventor designed a universal clamping and positioning assembly 50, the specific structure of which is: The clamping and positioning assembly 50 includes a shell 15, a welding seat 16 is rotatably mounted on the shell 15, a clamping assembly is arranged on the welding seat 16, and the upper and lower groups of the clamping assemblies are respectively used to fix one of the aluminum-magnesium alloy materials, thereby realizing double positioning and ensuring the precision of welding.

[0017] However, the conventional clamping assembly mostly adopts the form of single-side single-point positioning, which has poor clamping stability for the long aluminum-magnesium alloy tube required by this application. The clamping assembly is designed as a single-side two-point clamping form, specifically: The clamping assembly includes a receiving groove 33 provided in the welding seat 16, at least three groups of clamping heads are installed in the receiving groove 33, the clamping head includes a slide groove 36 arranged at the top of the receiving groove 33, a slider 35 is slidably installed in the slide groove 36, a No. 1 spring 38 is fixed between the slide groove 36 and the slider 35, the slider 35 is fixed to a connecting rod 37, a No. 1 clamping rod 20 and a No. 2 clamping rod 28 are fixed on the connecting rod 37, the No. 1 clamping rod 20 and the No. 2 clamping rod 28 both penetrate the welding seat 16 and are slidably connected to the welding seat 16, a No. 1 positioning head 21 is fixed at the end of the No. 1 clamping rod 20, and a No. 2 positioning head 29 is fixed at the end of the No. 2 clamping rod 28, A pushing block 32 is provided in the middle position of each clamping head. The pushing block 32 is designed as a truncated cone-like inclined surface. A threaded rod 14 is fixed at the bottom of the pushing block 32. The threaded rod 14 passes through the welding seat 16 and is threadedly connected with the welding seat 16. A handle 13 is fixed at the end of the threaded rod 14. After the aluminum-magnesium alloy pipe is manually inserted into the outer shell 15, the handle 13 is manually rotated to drive the threaded rod 14 to rotate. The threaded connection between the threaded rod 14 and the welding seat 16 drives the pushing block 32 to rotate and rise. After the pushing block 32 rises, it will push each of the clamping heads to move outward, thereby driving the No. 2 positioning head 29 and the No. 1 positioning head 21 to press against the inner wall of the aluminum-magnesium alloy pipe to achieve clamping.

[0018] Furthermore, the use of the above-mentioned single-side two-point clamping form certainly improves the clamping stability, but some magnesium-aluminum alloy pipes are very soft and are prone to have some bulges and depressions on the inner wall. If the clamping position happens to be at these defective positions, it is easy to cause inaccurate center positioning of the magnesium-aluminum alloy pipe. Based on this, an indicator mechanism is added; The indicating mechanism is arranged on each clamping head, and the indicating mechanism includes a first contact 31 installed on the first positioning head 21 and a second contact 30 installed on the second positioning head 29. A power supply 34 is fixedly installed in the receiving groove 33, and an indicator light 17 having the same number as the indicating mechanism is fixedly installed on the welding seat 16. Figure 5As shown, each of the indicating mechanisms forms a plurality of parallel circuits, and is uniformly powered by the power supply 34. The No. 1 contact 31 and the No. 2 contact 30 are disconnection parts of each parallel circuit. When the No. 1 positioning head 21 and the No. 2 positioning head 29 of one of the clamping heads simultaneously contact the aluminum-magnesium alloy pipe fitting, the parallel circuit will be closed and energized, and the corresponding indicator light 17 will light up, and the clamping head will be relatively well clamped on the inner wall of the aluminum-magnesium alloy pipe fitting. If the indicator light 17 is not on, the aluminum-magnesium alloy pipe fitting needs to be manually pulled out to adjust the position to better achieve the center positioning of the aluminum-magnesium alloy pipe fitting; The voltage and current provided by the power supply 34 are below the safety standards for the human body and will not cause any safety hazards; Among them, the lines of the above circuits and the specific installation of wires are not shown in this application, but the applicant believes that it is relatively simple for technical personnel in this field and hopes that it can be understood.

[0019] In addition, a bearing 27 is installed between the welding seat 16 and the housing 15 to achieve a rotational connection between them.

[0020] In addition, although the aluminum-magnesium alloy material is fixed by the two clamping and positioning components 50, the applicant hopes that the two materials can be rotated together during welding, which will be very convenient during welding. Based on this, the invention makes certain optimizations to the lifting control component 60, specifically: The lifting control assembly 60 includes a lifting slot 40 opened on the bracket 12, a lifting seat 22 is slidably installed in the lifting slot 40, the lifting seat 22 is fixed to the upper shell 15, a No. 2 spring 23 is fixed on the lifting seat 22, the other end of the No. 2 spring 23 is fixed to a pressure block 24, a push block 25 is fixed on the pressure block 24, the pressure block 24 is slidably installed in the lifting slot 40, at least one slot 42 penetrating the bracket 12 is opened on one side of the lifting slot 40, an insert block 26 is slidably installed in the slot 42, and a push block 25 is fixed in the pressure block 24. A locking groove 41 is opened. When the two aluminum-magnesium alloy materials are against each other, the push block 25 is grasped to push the pressure block 24, so that the locking groove 41 is aligned with the slot 42 closest to the bottom. The No. 2 spring 23 is compressed, and the corresponding plug block 26 is pushed to be inserted into the locking groove 41 to achieve locking. At this time, the compressed No. 2 spring 23 applies pressure to the lifting seat 22 and finally transmits it to the space between the two aluminum-magnesium alloy materials. At this time, manually turning one of the handles 13 can drive the welding seat 16 and the two aluminum-magnesium alloy materials to rotate together, which is convenient for welding.

[0021] In addition, a positioning platform 18 is fixed on the welding seat 16, and the positioning platform 18 is provided with locking openings 19 which are the same in number as the No. 1 clamping rods 20, and the No. 1 clamping rods 20 pass through the locking openings 19. The positioning platform 18 can be used to place the aluminum-magnesium alloy flange, and each of the No. 1 positioning heads 21 is used to clamp the inner diameter of the aluminum-magnesium alloy flange.

[0022] In addition, in order to facilitate the lifting and lowering of the upper housing 15 , a lifting plate 39 is fixedly provided on the upper housing 15 .

[0023] It will be clear to those skilled in the art that various modifications to the above embodiments may be made without departing from the overall spirit and concept of the present invention. All of these modifications fall within the scope of protection of the present invention. The protection scheme of the present invention shall be subject to the claims attached to the present invention.

Claims

1. A precision welding device for aluminum-magnesium alloy material, comprising a base (11), a bracket (12) mounted on the base (11), and a welding positioning assembly mounted on the bracket (12), characterized in that: The welding positioning assembly comprises two clamping positioning assemblies (50), wherein the lower clamping positioning assembly (50) is fixed to the bracket (12), and the upper clamping positioning assembly (50) is fixedly mounted on the lifting control assembly (60); The clamping and positioning assembly (50) comprises a housing (15), a welding seat (16) is rotatably mounted on the housing (15), and a clamping assembly is arranged on the welding seat (16); The clamping assembly comprises a receiving groove (33) provided in the welding seat (16), wherein at least three groups of clamping heads are installed in the receiving groove (33), wherein the clamping head comprises a slide groove (36) provided at the top of the receiving groove (33), wherein a slider (35) is slidably installed in the slide groove (36), wherein a spring (38) is fixed between the slide groove (36) and the slider (35), wherein the slider (35) is fixed to a connecting rod (37), wherein a clamping rod (20) and a clamping rod (28) are fixed to the connecting rod (37), wherein the clamping rod (20) and the clamping rod (28) both pass through the welding seat (16) and are slidably connected to the welding seat (16), wherein a positioning head (21) is fixed at the end of the clamping rod (20), and a positioning head (21) is fixed at the end of the clamping rod (28). 9), a pushing block (32) is provided at the middle position of each clamping head, the pushing block (32) is designed as a truncated cone-like inclined surface, a threaded rod (14) is fixed at the bottom of the pushing block (32), the threaded rod (14) passes through the welding seat (16) and is threadedly connected to the welding seat (16), and a handle (13) is fixed at the end of the threaded rod (14); after the aluminum-magnesium alloy pipe is manually inserted into the housing (15), the handle (13) is manually rotated to drive the threaded rod (14) to rotate, and the threaded connection between the threaded rod (14) and the welding seat (16) drives the pushing block (32) to rotate and rise, and after the pushing block (32) rises, it pushes each clamping head to move outward, thereby driving the second positioning head (29) and the first positioning head (21) to press against the inner wall of the aluminum-magnesium alloy pipe to achieve clamping.

2. A precision welding device for aluminum-magnesium alloy materials according to claim 1, characterized in that: An indicating mechanism is provided on each clamping head, the indicating mechanism comprising a first contact (31) mounted on the first positioning head (21) and a second contact (30) mounted on the second positioning head (29); a power source (34) is fixedly mounted in the storage groove (33); and indicator lights (17) whose number is the same as that of the indicating mechanisms are fixedly mounted on the welding seat (16); the indicating mechanisms form a plurality of parallel circuits and are uniformly powered by the power source (34).

3. The precision welding device for aluminum-magnesium alloy material according to claim 1, characterized in that: A bearing (27) is installed between the welding seat (16) and the housing (15) to achieve a rotational connection between them.

4. The precision welding device for aluminum-magnesium alloy material according to claim 1, characterized in that: The lifting control assembly (60) includes a lifting slot (40) opened on the bracket (12), a lifting seat (22) is slidably installed in the lifting slot (40), the lifting seat (22) is fixed to the upper shell (15), a No. 2 spring (23) is fixed on the lifting seat (22), the other end of the No. 2 spring (23) is fixed to a pressure block (24), a push block (25) is fixed on the pressure block (24), the pressure block (24) is slidably installed in the lifting slot (40), at least one slot (42) penetrating the bracket (12) is opened on one side of the lifting slot (40), an insert block (26) is slidably installed in the slot (42), and the A locking groove (41) is provided in the pressure block (24). When the two aluminum-magnesium alloy materials are pressed against each other, the push block (25) is grasped to push the pressure block (24) so ​​that the locking groove (41) is aligned with the slot (42) closest to the bottom. The second spring (23) is compressed and the corresponding insert block (26) is pushed to be inserted into the locking groove (41) to achieve locking. At this time, the compressed second spring (23) applies pressure to the lifting seat (22) and finally transmits the pressure to the space between the two aluminum-magnesium alloy materials. At this time, manually turning one of the handles (13) can drive the welding seat (16) and the two aluminum-magnesium alloy materials to rotate together, thereby facilitating welding.

5. The precision welding device for aluminum-magnesium alloy material according to claim 1, characterized in that: A positioning platform (18) is fixed on the welding seat (16), and the positioning platform (18) is provided with locking openings (19) which are the same in number as the number of the No. 1 clamping rods (20), and the No. 1 clamping rods (20) pass through the locking openings (19). The positioning platform (18) can be used to place an aluminum-magnesium alloy flange, and each of the No. 1 positioning heads (21) is used to clamp the inner diameter of the aluminum-magnesium alloy flange.

6. The precision welding device for aluminum-magnesium alloy material according to claim 1, characterized in that: A lifting plate (39) is fixedly arranged on the upper side of the housing (15).

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