CN217890003U

CN217890003U - Heat shield welding auxiliary device

Info

Publication number: CN217890003U
Application number: CN202221663569.2U
Authority: CN
Inventors: 王家龙; 陈宏宇; 黄明新
Original assignee: Chongqing Yuanzimei Automation Equipment Co ltd
Current assignee: Atomic Media (Chongqing) Intelligent Technology Co.,Ltd.
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2022-11-25
Anticipated expiration: 2032-06-30

Abstract

The application relates to a heat shield welding auxiliary device, which relates to the field of welding tools and comprises a positioning mechanism, a welding tool and a welding tool, wherein the positioning mechanism is used for fixing the position of an air inlet pipe; separate heat exchanger fixed establishment, separate heat exchanger fixed establishment and include power portion, first holder and second holder, first holder and/or second holder are connected with power portion, and power portion can make first holder and second holder be close to each other and will open the heat exchanger clamp that sets up and fix on the shell surface. The heat shield has the effect of fixing the heat shield which is oppositely arranged on the outer shell to prevent the separation of the seam in the welding process.

Description

Heat shield welding auxiliary device

Technical Field

The application relates to the field of welding tools, in particular to a heat shield welding auxiliary device.

Background

An automobile exhaust treatment system is a key device for reducing emission pollutants, wherein a DOC assembly is an important component of the exhaust treatment system.

The related art is disclosed in korean patent No. KR20120081371A, which discloses a diesel exhaust gas after-treatment device in which an intake pipe and an exhaust pipe are located at both ends of the device.

When the heat shield is added to the outer shell of the exhaust gas post-treatment device, the heat shield positioned at the end part can be directly sleeved at the end part of the outer shell, the heat shield positioned in the middle cannot be directly sleeved on the outer shell due to the blocking of the air inlet pipe or the exhaust pipe, and the heat shield in the middle part is generally oppositely arranged and then welded and fixed. During actual welding operation, the joints of the two oppositely-opened heat shields are easy to separate, and the welding quality is affected.

SUMMERY OF THE UTILITY MODEL

In order to improve and easily come off the problem that influences welding quality to the heat exchanger that separates that opens the setting seam crossing in welding process, this application provides a heat exchanger welding auxiliary device.

The application provides a pair of separate heat exchanger welding auxiliary device adopts following technical scheme:

a welding auxiliary device for a heat shield comprises a positioning mechanism, a welding mechanism and a welding mechanism, wherein the positioning mechanism is used for fixing the position of an air inlet pipe; the welding auxiliary device further comprises a heat shield fixing mechanism, the heat shield fixing mechanism comprises a power part, a first clamping piece and a second clamping piece, the first clamping piece and/or the second clamping piece are connected with the power part, and the power part can enable the first clamping piece and the second clamping piece to be close to each other and clamp the oppositely-arranged heat shield on the surface of the outer shell.

Through adopting above-mentioned technical scheme, place the shell body at work platform or subaerial to it is fixed to the intake pipe on the shell body with positioning mechanism, makes the shell body fixed position of difference unified. Then will run from opposite directions the heat exchanger that sets up and place shell body surface from both sides laminating, rethread power portion drives first holder and second holder and is close to each other and the butt is tight on the heat exchanger tightly, keeps the rigidity between the heat exchanger that runs from opposite directions and between heat exchanger and the shell body, can not break away from and influence welding quality because of the heat exchanger seam among the welding operation process.

Optionally, the positioning mechanism includes a positioning plate, and the positioning plate is provided with a positioning member matched with the end of the air inlet pipe.

Optionally, positioning mechanism still drives actuating cylinder, drives actuating cylinder and connects between locating plate and base, drives actuating cylinder and can drive the locating plate and be close to or keep away from the intake pipe removal.

Optionally, the welding auxiliary device further comprises a base, the power part and the second clamping piece are both fixed on the base, the first clamping piece is connected to the power part, and the power part drives the first clamping piece to move close to or away from the second clamping piece; or the power part is fixed on the base, and the first clamping piece and the second clamping piece can be driven by the power part to mutually approach or separate.

Optionally, the first clamping piece is detachably connected with the power part; and/or the second clamp is detachably connected with the base.

Optionally, the first clamping piece and the second clamping piece are provided with a groove for the air inlet pipe to pass through at the joint position.

Optionally, the welding auxiliary device further comprises an outer shell fixing mechanism, and the outer shell fixing mechanism and the heat shield fixing mechanism are distributed along the same straight line and used for fixing the outer shell.

Optionally, the outer casing fixing mechanism includes a support frame for supporting the outer casing.

Optionally, the outer casing fixing mechanism further comprises a pressing cylinder, the pressing cylinder is provided with a pressing arm, and the pressing cylinder can drive the pressing arm to move close to or far away from the support frame.

Optionally, the outer casing fixing mechanism further comprises a buffer assembly, the buffer assembly comprises an elastic piece and a pressing block, the elastic piece is connected between the pressing arm and the pressing block, and the pressing block is arranged close to the support frame.

To sum up, the application comprises the following beneficial technical effects: the heat shield is clamped and fixed through the first clamping piece and the second clamping piece of the heat shield fixing mechanism, the possibility of separation of the joint position of the heat shield is reduced, and the welding quality of the heat shield is improved.

Drawings

FIG. 1 is a schematic diagram of a heat shield mounting structure of a DOC assembly in an embodiment of the present application;

FIG. 2 is a schematic diagram of the overall structure of an embodiment of the present application;

FIG. 3 is a top view of FIG. 2;

FIG. 4 isbase:Sub>A cross-sectional view taken along the plane A-A in FIG. 3;

fig. 5 is a schematic structural diagram of an application state of the embodiment of the present application.

Description of reference numerals:

1. a base; 11. a support post; 111. a mounting frame; 12. a support;

2. a heat shield fixing mechanism; 21. a pressing cylinder; 211. a pressing arm; 22. a connecting arm; 23. a first clamping member; 231. a groove; 232. a weight-reducing opening; 24. a second clamping member;

3. a positioning mechanism; 31. a driving cylinder; 32. a slide base; 33. positioning a plate;

4. a housing fixing mechanism; 41. a support frame; 42. pressing and fixing the cylinder; 421. a pressing arm; 43. a buffer assembly; 431. briquetting; 432. a connecting rod; 433. an elastic member;

5. a DOC assembly; 51. an outer housing; 52. an air inlet pipe; 521. a flange; 53. a sensor seat; 54. a heat shield; 541. a first heat insulation plate; 5411. withdrawing the hole; 542. a second heat insulation plate; 543. folding edges; 544. and (6) withdrawing the groove.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

As shown in fig. 1, which is a schematic structural diagram of a heat shield installation of a DOC assembly, a DOC assembly 5 includes an outer casing 51, an intake pipe 52 and a heat shield 54, and an open end of the intake pipe 52 is provided with a flange 521. The outline of the heat shield 54 is matched with the external outline of the outer shell 51, wherein the outline of the outer shell 51 is cylindrical, the heat shield 54 is integrally in a circular tube shape, the heat shield 54 is divided into two parts by a plane formed by the axis of the outer shell 51 and the axis of the air inlet pipe 52, the two parts are respectively a first heat shield 541 and a second heat shield 542, the first heat shield 541 and the second heat shield 542 are bent to form a folded edge 543 close to a joint, the positions of the first heat shield 541 and the second heat shield 542 corresponding to the position of the air inlet pipe 52 are respectively provided with a yielding groove 544, and the two yielding grooves 544 jointly form a circular hole matched with the outline of the air inlet pipe 52. The outer shell 51 is further connected to a sensor base 53 corresponding to the heat shield 54, and the first heat shield 541 has a relief hole 5411 corresponding to the sensor base 53.

To weld the heat shield 54 of the DOC assembly, the present embodiment discloses a heat shield welding aid.

Referring to fig. 2, 3 and 4, the heat shield welding assistance device includes: a base 1; the positioning mechanism 3 is connected to the base 1 and used for fixing the position of the air inlet pipe 52; the welding auxiliary device further comprises a heat shield fixing mechanism 2 connected to the base 1, wherein the heat shield fixing mechanism 2 comprises a power part, a first clamping piece 23 and a second clamping piece 24, the first clamping piece 23 and/or the second clamping piece 24 are connected with the power part, and the power part can enable the first clamping piece 23 and the second clamping piece 24 to be close to each other and clamp the heat shield 54 arranged in a split mode on the surface of the outer shell 51.

The outer housing 51 is placed on the base 1, and the air intake duct 52 on the outer housing 51 is fixed by the positioning mechanism 3, so that the fixing positions of the different outer housings 51 are unified. Then the split heat shield 54 is attached to the surface of the outer shell 51 from two sides, the power part drives the first clamping piece 23 and the second clamping piece 24 to approach each other and abut against the heat shield 54 to clamp, the positions of the split heat shield 54 and the outer shell 51 are fixed, and the welding quality cannot be influenced due to the separation of seams of the heat shield 54 in the welding operation process.

The base 1 can be a rectangular plate structure, the power part can be a pressing cylinder 21, and the pressing cylinder 21 can be a strong welding clamping cylinder of commercially available Adam JCK series, and can also be other types of cylinders. The compressing cylinder 21 is fixed on the base 1 through a bolt, a piston rod of the compressing cylinder 21 is vertically arranged, the first clamping piece 23 is fixed with the piston rod of the compressing cylinder 21, the second clamping piece 24 is fixed with the base 1, the fixing mode can adopt an integrated fixing mode such as welding or detachable connection, the detachable connection is preferably adopted, and the detachable mode includes but is not limited to bolt connection. In this case, the second heat insulation board 542 may be placed on the second clamping member 24, then the outer housing 51 is placed, the first heat insulation board 541 is placed on the outer housing 51 to splice the second heat insulation board 542, and the pressing cylinder 21 is started to drive the first clamping member 23 to move towards the second clamping member 24 and press the first heat insulation board 541.

The first clamping piece 23 and the second clamping piece 24 are both in a semi-arc shape, and the cross-sectional profiles of the first clamping piece 23 and the second clamping piece 24 can also be in other shapes such as V-shaped. In order to reduce the overall weight, the first clamping piece 23 and the second clamping piece 24 are provided with lightening openings 232. In connection with fig. 3 and 5, in order to prevent the first clamping member 23 from interfering with the protruding sensor seat 53 when the first clamping member 23 is located at the position of the sensor seat 53, the lightening opening 232 may preferably be provided around the corresponding position of the sensor seat 53 so that the sensor seat 53 can be protruded from the lightening opening 232 when the first clamping member 23 is pressed against the heat shield 54.

In order to conveniently replace and mount the first clamping piece 23, a connecting arm 22 is further arranged between the first clamping piece 23 and the pressing cylinder 21, the pressing cylinder 21 is provided with a pressure arm 211, one end of the connecting arm 22 is connected with the pressure arm 211 through a bolt, and the other end of the connecting arm 22 is connected with the first clamping piece 23 through a bolt. The connecting arm 22 simultaneously increases the distance that the pressing cylinder 21 drives the first clamping piece 23, so that the pressing cylinder 21 can be arranged in the axial direction of the first clamping piece 23, and the possibility that the pressing cylinder 21 interferes with the end part of the outer shell 51 is reduced.

Referring to fig. 2 and 3, the positioning mechanism 3 includes a positioning plate 33, and the positioning plate 33 is provided with a positioning member engaged with the end of the air inlet pipe 52. The positioning piece can be a cylinder, and the cylinder corresponds to the through holes on the flange 521 at the end part of the air inlet pipe 52 one by one; or the positioning member may be a boss which is adapted to the inner diameter of the air inlet pipe 52, or the positioning plate 33 has both a boss and a cylinder. Thus, when the outer case 51 is placed, the position of the outer case 51 is adjusted so that the air intake duct 52 is aligned with the positioning plate 33, and the position of the outer case 51 placed at each time is uniform.

Positioning mechanism 3 still includes and drives actuating cylinder 31, drives actuating cylinder 31 and connects between locating plate 33 and base 1, drives actuating cylinder 31 and can drives locating plate 33 and be close to or keep away from intake pipe 52 and remove. It is fixed with base 1 that drive actuating cylinder 31 can pass through the bolt, and the piston rod level that drives actuating cylinder 31 sets up, and locating plate 33 is fixed at the tip of piston rod, and shell body 51 can be placed from top to bottom like this, then drives actuating cylinder 31 through the rethread and drives locating plate 33 butt at intake pipe 52 tip limit position.

A sliding seat 32 can be further arranged between the driving air cylinder 31 and the positioning plate 33, a guide rail is fixedly arranged on the base 1 and is arranged along the axis of the piston rod, and the sliding seat 32 can be matched with the guide rail and can slide, so that the stability of the positioning plate 33 during moving is improved.

In other embodiments of the embodiment of the present application, the piston rod of the driving cylinder 31 may also be vertically disposed, and the DOC assembly 5 is placed while the axis of the air inlet pipe 52 is vertically disposed. Accordingly, the first clamping member 23 and the second clamping member 24 are arranged left and right with horizontal axes. The piston rod of the pressing cylinder 21 is horizontally disposed. The pressing cylinder 21 may have one connected to one of the first holding member 23 or the second holding member 24, and the other is fixed to the base 1. The number of the pressing cylinders 21 can also be two, and the first clamping piece 23 and the second clamping piece 24 are respectively connected with one pressing cylinder 21.

In other embodiments of the embodiment of the present application, when the first clamping member 23 and the second clamping member 24 are disposed on the left and right sides, the power portion may also adopt other structures such as a linear stepping motor or a screw mechanism, as long as the first clamping member 23 and the second clamping member 24 can be driven to approach or separate from each other.

Referring to fig. 4, when the heat shield 54 is located at the air inlet tube 52, the first clamping member 23 and the second clamping member 24 are provided with a groove 231 for the air inlet tube 52 to pass through at the seam position, and the two grooves 231 enclose a circular hole, and the diameter of the circular hole is slightly larger than the outer diameter of the air inlet tube 52, so that the folded edge 543 of the heat shield 54 located at the air inlet tube 52 can be pressed.

Referring to fig. 2 and 3, the welding assistance device further includes an outer case fixing mechanism 4, and the outer case fixing mechanism 4 and the heat shield fixing mechanism 2 are located on the same line of the base 1, and are used for fixing the outer case 51.

The outer casing fixing mechanism 4 includes a support frame 41, the support frame 41 is connected to the base 1 in a manner including but not limited to bolting, plugging, clamping, or welding, and the support frame 41 is used for supporting the outer casing 51. The support frame 41 is formed in an arc shape as a whole so as to be adapted to the contour of the outer case 51, supports the outer case 51 from the bottom, and prevents the outer case 51 from rocking left and right in the horizontal plane to some extent. The support 41 may also be other shapes, such as V-shaped, T-shaped, etc. There are two support frames 41 distributed along the axis, and the number of the support frames 41 may be 1, 3 or more as required.

Referring to fig. 3 and 4, in order to further compress the outer casing 51 from above and increase the stability of the outer casing 51, the outer casing fixing mechanism 4 further includes a pressing cylinder 42, the pressing cylinder 42 is connected to the base 1, the pressing cylinder 42 is provided with a pressing arm 421, the pressing arm 421 is located above the supporting frame 41, and the pressing cylinder 42 can drive the pressing arm 421 to move toward or away from the supporting frame 41. The pressure-fixing air cylinder 42 can be connected with the base 1 through a bolt, and a piston rod of the pressure-fixing air cylinder 42 is vertically arranged. The pressing arm 421 is horizontally disposed here, and one end of the pressing arm 421 is fixedly connected or hinged with the piston rod.

In order to make the distance between the pressing arm 421 and the supporting frame 41 enough to place the outer shell 51, a mounting bracket 111 may be disposed between the pressing cylinder 42 and the base 1, the mounting bracket 111 is higher than the supporting frame 41, and the pressing cylinder 42 is fixed on the upper portion of the mounting bracket 111. The piston rod of the pressing cylinder 42 moves up and down to drive the pressing arm 421 to move up and down, and the pressing arm 421 presses the outer shell 51 when moving down.

When there are two support frames 41 and only one pressing arm 421, the pressing arm 421 is disposed between the two support frames 41 so that the pressing force is relatively equalized. The number of the pressing arms 421 can also be the same as that of the supporting frames 41, and in this case, the pressing arms 421 can correspond to the positions of the supporting frames 41 one by one. The number of pressing arms 421 may also be greater than the number of support brackets 41. The pressing arms 421 may be connected to one pressing cylinder 42, or two or more pressing arms 421 may be connected to the same pressing cylinder 42, and at this time, the pressing arms 421 may be fixedly connected to form a whole, and the pressing arms 421 are fixed to each other by a connecting rod.

Referring to fig. 4 and 5, in order to make the pressing arm 421 press on the outer housing 51 to reduce the impact on the product and reduce the possibility of deformation, the outer housing fixing mechanism 4 further includes a buffer assembly 43, the buffer assembly 43 includes an elastic member 433 and a pressing block 431, the elastic member 433 is connected between the pressing arm 421 and the pressing block 431, and the pressing block 431 is disposed near the supporting frame 41. The elastic member 433 may be a spring, or may be made of other elastic materials such as a rubber block or a sponge, and one end of the elastic member 433 is fixed to the pressing arm 421, and the other end of the elastic member 433 is fixed to the pressing block 431. The pressing block 431 is located right above the supporting frame 41, and is preferably arranged on the axial vertical plane of the supporting frame 41. The side of the pressure block 431 adjacent to the support 41 may be curved to conform to the surface contour of the outer shell 51. When the profile of the outer shell 51 at this position changes, the surface of the pressing piece 431 near the support frame 41 changes shape accordingly.

When elastic component 433 adopts the spring, in order to make briquetting 431 relatively stable when removing, buffering subassembly 43 still includes connecting rod 432, vertically is equipped with the through-hole on pressing arm 421, and connecting rod 432 passes the through-hole, and connecting rod 432 is located the upper portion of pressing arm 421 and can threaded connection have the nut to prevent that connecting rod 432 from dropping, the bottom and the briquetting 431 fixed connection of connecting rod 432. A spring may be fitted over the connecting rod 432 and the spring may be located above the pressing arm 421 or below the pressing arm 421. Here the spring is located below the pressing arm 421 and is arranged between the pressing arm 421 and the pressure piece 431.

After the pressing piece 431 abuts against the outer shell 51, the spring is compressed along with the further pressing of the pressing arm 421, and the pressing piece 431 is pressed, so that the outer shell 51 is gradually pressed and fixed. When the pressing arm 421 moves upward, the spring gradually returns to the initial state, the elastic potential energy is gradually released, and the pressing piece 431 is separated from the outer shell 51, so that the impact applied when the outer shell 51 is fixed is reduced.

In order to support the DOC assembly 5 away from the ground or a working table, a support column 11 and a support 12 are fixed on the base 1, the heat shield fixing mechanism 2 and the support frame 41 are both arranged on different support columns 11, and the positioning mechanism 3 is arranged on the support 12. The support 11 may be a hollow prism structure, and the support 12 may be a rectangular parallelepiped frame structure.

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

Claims

1. A heat shield welding auxiliary device comprises a positioning mechanism (3) for fixing the position of an air inlet pipe (52); the method is characterized in that: the welding auxiliary device further comprises a heat shield fixing mechanism (2), the heat shield fixing mechanism (2) comprises a power part, a first clamping piece (23) and a second clamping piece (24), the first clamping piece (23) and/or the second clamping piece (24) are connected with the power part, and the power part can enable the first clamping piece (23) and the second clamping piece (24) to be close to each other and clamp the heat shield (54) which is oppositely arranged on the surface of the outer shell (51).

2. The heat shield welding assist of claim 1, wherein: the positioning mechanism (3) comprises a positioning plate (33), and the positioning plate (33) is provided with a positioning piece matched with the end part of the air inlet pipe (52).

3. The heat shield welding assist of claim 2, wherein: positioning mechanism (3) still drive actuating cylinder (31), drive actuating cylinder (31) and connect in locating plate (33), drive actuating cylinder (31) and can drive locating plate (33) and be close to or keep away from intake pipe (52) and remove.

4. The heat shield welding assist device according to any one of claims 1 to 3, wherein: the welding auxiliary device further comprises a base (1), the power part and the second clamping piece (24) are fixed on the base (1), the first clamping piece (23) is connected to the power part, and the power part drives the first clamping piece (23) to move close to or far away from the second clamping piece (24);

or the power part is fixed on the base (1), and the first clamping piece (23) and the second clamping piece (24) can be driven by the power part to move close to or away from each other.

5. The heat shield welding assist of claim 4, wherein: the first clamping piece (23) is detachably connected with the power part; and/or the second clamping piece (24) is detachably connected with the base (1).

6. The heat shield welding assist device according to claim 1, 2, 3, or 5, wherein: the first clamping piece (23) and the second clamping piece (24) are provided with grooves (231) for the air inlet pipe (52) to pass through at the joint position.

7. The heat shield welding assist of claim 1, 2, 3 or 5, wherein: the welding auxiliary device further comprises an outer shell fixing mechanism (4), and the outer shell fixing mechanism (4) and the heat shield fixing mechanism (2) are distributed along the same straight line and used for fixing the outer shell (51).

8. The heat shield welding assist of claim 7, wherein: the outer casing fixing mechanism (4) comprises a support frame (41), and the support frame (41) is used for supporting the outer casing (51).

9. The heat shield welding assist of claim 8, wherein: the outer shell fixing mechanism (4) further comprises a pressing air cylinder (42), the pressing air cylinder (42) is provided with a pressing arm (421), and the pressing air cylinder (42) can drive the pressing arm (421) to move close to or far away from the supporting frame (41).

10. The heat shield welding assist of claim 9, wherein: the outer shell fixing mechanism (4) further comprises a buffer assembly (43), the buffer assembly (43) comprises an elastic piece (433) and a pressing block (431), the elastic piece (433) is connected between the pressing arm (421) and the pressing block (431), and the pressing block (431) is arranged close to the support frame (41).