Silencer welding tool and method thereof

Abstract

The invention belongs to the technical field of welding equipment, and discloses a silencer welding tool and a method thereof.The silencer welding tool comprises a supporting frame, an electrode column, a welding gun annularly arranged outside the electrode column, a first mold, a lower mold, a second mold, a cleaning mechanism, a welding mechanism, a welding mechanism, a first welding mechanism, a second welding mechanism and a control mechanism, and the welding gun, the first mold, the lower mold and the second mold are annularly arranged outside the electrode column; comprising a clamping assembly, a positioning assembly and first supporting rods symmetrically installed on a supporting frame, servo motors are fixedly installed on the outer walls of the first supporting rods, output shafts of the servo motors penetrate through the first supporting rods to be provided with second gears, and the upper sides of the second gears are engaged with first gears; grinding wheels are mounted on the sides, away from the servo motor, of the first gear and the second gear; when the feeding plate drives the metal plate to move, the clamping assembly firstly clamps the metal plate, the positioning assembly further positions the metal plate, and meanwhile the grinding wheel cleans the to-be-welded area of the metal plate. The problem that a welding spot is not firm due to the fact that an existing device cannot automatically clean a welding area is solved.

Description

Technical Field

[0001] The invention relates to the technical field of welding equipment, in particular to a muffler welding tool and a method thereof. Background Art

[0002] A muffler is a device that blocks sound transmission but allows airflow to pass through. It is an important measure to eliminate aerodynamic noise. Mufflers are usually made of metal materials (such as stainless steel, aluminum alloy or other corrosion-resistant alloys). In the production process of mufflers, welding technology is an important link that determines the welding quality and durability of the muffler.

[0003] However, since the muffler material is located inside the factory, the outer wall is easily contaminated by oil or dust. During welding, if it is not cleaned in time, it will affect the current conduction, resulting in uneven and loose welding points, and ultimately may cause the muffler to crack, leak and other problems during use. To address the above problems, the present invention proposes a muffler welding tool and method. Summary of the invention

[0004] The object of the present invention is to provide a muffler welding tool and method thereof, which solves the problem that the existing equipment cannot automatically clean the welding area, resulting in loose welding points.

[0005] To achieve the above object, the present invention provides the following technical solution: a muffler welding tool, comprising a support frame and an electrode column, a welding gun annularly arranged outside the electrode column, a first mold, a lower mold and a second mold, the support frame is provided with a feeding plate for conveying a metal plate, and further comprising:

[0006] The cleaning mechanism comprises a clamping assembly, a positioning assembly and a first support rod symmetrically mounted on the support frame, a servo motor is fixedly mounted on the outer wall of the first support rod, an output shaft of the servo motor passes through the first support rod and is mounted with a second gear, a first gear is meshed on the upper side of the second gear, and a grinding wheel is mounted on the first gear and the second gear away from the servo motor; when the feeding plate drives the metal plate to move, the clamping assembly first clamps the metal plate, the positioning assembly further positions the metal plate, and at the same time the grinding wheel cleans the area of ​​the metal plate to be welded;

[0007] The positioning assembly includes two protrusions and a translation assembly, wherein the protrusions are symmetrically arranged on the outer wall of the feeding plate, and the translation assembly includes a slide rod, and an extrusion rod is rotatably mounted on the upper end surface of the slide rod; when the feeding plate drives the protrusion to move and no longer extrudes the translation assembly, the slide rod drives the extrusion rod to position the metal plate;

[0008] The clamping assembly includes two cylinders and a lifting assembly. The cylinders are symmetrically mounted on the upper end surface of a feeding plate. A first sliding groove is provided on the outer wall of the cylinder. A second round rod is slidably mounted on the inner wall of the first sliding groove. An extrusion wheel is rotatably mounted on the outer wall of the second round rod. When the lifting assembly drives the second round rod to move in the first sliding groove, the extrusion wheel clamps the metal plate.

[0009] Preferably, the translation assembly includes a second support rod, the lower end surface of the second support rod is installed on the support frame, the outer wall of the support frame is installed with a first tension spring, the first tension spring is fixedly connected to the sliding rod away from the second support rod, and the first roller is rotatably installed on one side of the sliding rod that passes through the second support rod.

[0010] Preferably, the lifting assembly includes a first round rod, which is slidably installed inside the cylinder, a second tension spring is installed on the upper end surface of the first round rod, and the second tension spring is installed on the inner wall of the cylinder away from the first round rod. A pull rod is rotatably installed on the lower end surface of the first round rod, and the pull rod passes through the feeding plate on the side away from the first round rod and is symmetrically rotatably installed with a second roller.

[0011] Preferably, a second slide groove is provided on the upper end surface of the support frame corresponding to the second roller, and the inner wall of the second slide groove abuts against the second roller.

[0012] Preferably, a retaining ring is symmetrically mounted on the upper end surface of the feeding plate for rotation.

[0013] Preferably, an electric telescopic rod is installed on the outer wall of the support frame, and a ring is fixedly installed on the output shaft of the electric telescopic rod. The ring is sleeved on the outer wall of the electrode column, and the lower end surface of the ring is fixedly installed on the feeding plate.

[0014] Preferably, a slide rail is symmetrically mounted on the upper end surface of the support frame, a slide seat is slidably mounted on the outer wall of the slide rail, and the upper end surface of the slide seat is fixedly mounted on the feeding plate.

[0015] Preferably, a control panel is installed on the upper end surface of the support frame.

[0016] Preferably, the extrusion wheel is made of rubber.

[0017] Preferably, the muffler welding method comprises the following steps:

[0018] Step 1: When the metal plate is placed on the feeding plate, the feeding plate drives the metal plate to move toward one side of the electrode column. First, the clamping assembly clamps the metal plate to prevent it from moving along the axis direction of the electrode column.

[0019] Step 2: After the clamping assembly completes clamping the metal plate, the positioning assembly moves the metal plate along the radial direction of the electrode column, thereby adjusting the position of the metal plate;

[0020] Step 3: After the clamping assembly and the positioning assembly complete the clamping and positioning of the metal plate, the grinding wheel will grind and clean the edge of the metal plate. After cleaning, the lower mold will make the metal plate abut against the lower end face of the electrode column, and then the first mold will extrude the side of the metal plate, followed by the second mold to extrude the other side of the metal plate, and finally the welding gun will weld it.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The present invention is provided with a clamping assembly, and the cylinder drives the second roller below to slide in the second slide groove through the first round rod and the pull rod. At this time, the second roller moves downward, and drives the second round rod to slide downward in the first slide groove through the pull rod and the first round rod. At this time, the second round rod will drive the extrusion wheel to rotate 90 degrees and then descend, and squeeze on the end surface of the metal plate to clamp it to prevent the metal plate from moving along the axial direction of the electrode column.

[0023] 2. The present invention is provided with a positioning component. When the protrusion no longer squeezes the first roller, the first tension spring contracts, driving the slide rod to move to one side of the feed plate, and the slide rod drives the extrusion rod to move. At this time, the extrusion rod adjusts the position of the metal plate on the feed plate, and the metal plate moves along the radial direction of the electrode column under the extrusion wheel until the first roller abuts against the outer wall of the feed plate. At this time, the metal plate is positioned, which can ensure the accuracy of subsequent forming and welding.

[0024] 3. The present invention is provided with a grinding wheel. When the metal plate is clamped and positioned, the grinding wheel can accurately grind and clean the welding part of the metal plate to prevent the current conduction from being affected during welding, resulting in loose and uneven welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the structure of the present invention without the metal plate;

[0027] Figure 3 for Figure 2 The enlarged schematic diagram of point A in the middle;

[0028] Figure 4 for Figure 2 The enlarged schematic diagram of point B in the middle;

[0029] Figure 5 It is another perspective schematic diagram of the present invention;

[0030] Figure 6 for Figure 5 Schematic diagram of removing the support frame;

[0031] Figure 7 This is a schematic diagram of the second chute of the present invention;

[0032] Figure 8 It is a cross-sectional view of a cylinder of the present invention.

[0033] In the figure: 1. support frame; 2. first mold; 3. electrode column; 4. welding gun; 5. second mold; 6. metal plate; 7. feed plate; 8. control panel; 9. servo motor; 10. first support rod; 11. slide rod; 12. first tension spring; 13. cylinder; 14. extrusion wheel; 15. retaining ring; 16. first roller; 17. bump; 18. second support rod; 19. grinding wheel; 20. first gear; 21. second gear; 22. extrusion rod; 23. first slide groove; 24. lower mold; 25. electric telescopic rod; 26. slide seat; 27. slide rail; 28. ring; 29. ​​second slide groove; 30. second tension spring; 31. first round rod; 32. pull rod; 33. second roller; 34. second round rod. DETAILED DESCRIPTION

[0034] In order to more clearly understand the purpose, technical solutions and advantages of the present application, the present application is described and illustrated below in conjunction with the accompanying drawings and embodiments.

[0035] See also Figures 1 to 8 The present invention provides a technical solution: a muffler welding tool, comprising a support frame 1 and an electrode column 3, a welding gun 4 annularly arranged outside the electrode column 3, a first mold 2, a lower mold 24 and a second mold 5, wherein a feeding plate 7 for conveying a metal plate 6 is arranged on the support frame 1, and further comprising:

[0036] The cleaning mechanism includes a clamping assembly, a positioning assembly and a first support rod 10 symmetrically mounted on the support frame 1, a servo motor 9 is fixedly mounted on the outer wall of the first support rod 10, an output shaft of the servo motor 9 passes through the first support rod 10 and is mounted with a second gear 21, a first gear 20 is meshed on the upper side of the second gear 21, and a grinding wheel 19 is mounted on the first gear 20 and the second gear 21 away from the servo motor 9; when the feeding plate 7 drives the metal plate 6 to move, the clamping assembly first clamps the metal plate 6, the positioning assembly further positions the metal plate 6, and at the same time the grinding wheel 19 cleans the area of ​​the metal plate 6 to be welded;

[0037] The positioning assembly includes two protrusions 17 and a translation assembly, wherein the protrusions 17 are symmetrically arranged on the outer wall of the feeding plate 7, and the translation assembly includes a slide bar 11, and an extrusion rod 22 is rotatably mounted on the upper end surface of the slide bar 11; when the feeding plate 7 drives the protrusion 17 to move and no longer extrudes the translation assembly, the slide bar 11 drives the extrusion rod 22 to position the metal plate 6;

[0038] The clamping assembly includes two cylinders 13 and a lifting assembly. The cylinders 13 are symmetrically installed on the upper end surface of the feeding plate 7. The outer wall of the cylinder 13 is provided with a first sliding groove 23. A second round rod 34 is slidably installed on the inner wall of the first sliding groove 23. An extrusion wheel 14 is rotatably installed on the outer wall of the second round rod 34. When the lifting assembly drives the second round rod 34 to move in the first sliding groove 23, the extrusion wheel 14 clamps the metal plate 6.

[0039] The welding gun 4, the first mold 2, the lower mold 24 and the second mold 5 all belong to the prior art.

[0040] Further, such as Figure 3 As shown, the translation assembly includes a second support rod 18, the lower end surface of the second support rod 18 is installed on the support frame 1, the outer wall of the support frame 1 is installed with a first tension spring 12, the first tension spring 12 is fixedly connected to the slide rod 11 away from the second support rod 18, and the slide rod 11 passes through the second support rod 18 and is rotatably installed with a first roller 16 on one side;

[0041] The first tension spring 12 drives the slide bar 11 to return to its original position, so that the first roller 16 is always in contact with the protrusion 17 or the outer wall of the feeding plate 7 .

[0042] Further, such as Figure 7 and Figure 8 As shown, the lifting assembly includes a first round rod 31, which is slidably mounted inside the cylinder 13, a second tension spring 30 is mounted on the upper end surface of the first round rod 31, and the second tension spring 30 is mounted on the inner wall of the cylinder 13 away from the first round rod 31. A pull rod 32 is rotatably mounted on the lower end surface of the first round rod 31, and the pull rod 32 penetrates the feeding plate 7 and symmetrically rotates to mount a second roller 33 away from the first round rod 31. The pull rod 32 is square, and a second slide groove 29 is opened at the upper end surface of the support frame 1 corresponding to the second roller 33, and the inner wall of the second slide groove 29 abuts against the second roller 33;

[0043] When the second roller 33 slides in the second slide groove 29, the second tension spring 30 ensures that the second roller 33 is always in contact with the second slide groove 29 through the first round rod 31 and the pull rod 32. When the first round rod 31 moves, it drives the second round rod 34 to slide and rotate in the first slide groove 23. Since the pull rod 32 is square, the pull rod 32 will not rotate, so that the second roller 33 maintains one direction.

[0044] Further, such as Figure 4 As shown, a retaining ring 15 is symmetrically mounted on the upper end surface of the feeding plate 7;

[0045] When the metal plate 6 needs to be placed, the retaining ring 15 can limit its position first to facilitate subsequent position adjustment.

[0046] Further, such as Figure 2 and Figure 6 As shown, an electric telescopic rod 25 is installed on the outer wall of the support frame 1, and a ring 28 is fixedly installed on the output shaft of the electric telescopic rod 25. The ring 28 is sleeved on the outer wall of the electrode column 3, and the lower end surface of the ring 28 is fixedly installed on the feeding plate 7;

[0047] When the electric telescopic rod 25 is working, it drives the ring 28 to move, and the ring 28 drives the feeding plate 7 to move. The feeding plate 7 loads the metal plate 6, and the ring 28 can push the formed metal plate 6 off the electrode column 3 to complete the unloading.

[0048] Further, such as Figure 6 As shown, a slide rail 27 is symmetrically mounted on the upper end surface of the support frame 1, a slide seat 26 is slidably mounted on the outer wall of the slide rail 27, and the upper end surface of the slide seat 26 is fixedly mounted on the feeding plate 7;

[0049] The feeding plate 7 slides on the slide rail 27 via the slide seat 26 .

[0050] Further, such as Figure 1 As shown, a control panel 8 is installed on the upper end surface of the support frame 1 for setting relevant parameters.

[0051] Furthermore, the extrusion wheel 14 is made of rubber material to prevent scratches on the metal plate 6 and increase friction to prevent the metal plate 6 from moving.

[0052] Further, such as Figure 2 As shown, the outer wall of the feeding plate 7 is provided with an opening, through which the lower die 24 can pass to squeeze the metal plate 6 onto the electrode column 3 .

[0053] In this embodiment, the muffler welding method comprises the following steps:

[0054] Step 1: After the external power supply is connected, the metal plate 6 is placed on the feeding plate 7, and one side of the metal plate 6 is abutted against the outer wall of the retaining ring 15, and then the electric telescopic rod 25 is contracted, driving the ring 28 to move toward the side of the electrode column 3, and the ring 28 drives the feeding plate 7 to move. At this time, the feeding plate 7 first drives the cylinder 13 to move, and the cylinder 13 drives the second roller 33 below to slide in the second slide groove 29 through the first round rod 31 and the pull rod 32. At this time, the second roller 33 moves downward, and drives the second round rod 34 to slide downward in the first slide groove 23 through the pull rod 32 and the first round rod 31. At this time, the second round rod 34 will drive the extrusion wheel 14 to rotate 90 degrees and then descend, and squeeze the upper end surface of the metal plate 6 to clamp it. At this time, the metal plate 6 can move in the radial direction of the electrode column 3, but cannot move in the axial direction of the electrode column 3;

[0055] Step 2: As the feeding plate 7 continues to move, the protrusion 17 no longer squeezes the first roller 16. At this time, the first tension spring 12 contracts, driving the slide bar 11 to move to the side of the feeding plate 7. The slide bar 11 drives the squeezing rod 22 to move. At this time, the squeezing rod 22 adjusts the position of the metal plate 6 on the feeding plate 7. The metal plate 6 moves under the squeezing wheel 14 until the first roller 16 abuts against the outer wall of the feeding plate 7, and the metal plate 6 completes the positioning.

[0056] Step 3: After the metal plate 6 is clamped and positioned, the servo motor 9 drives the second gear 21 to rotate, the second gear 21 drives the first gear 20 to rotate, the second gear 21 and the first gear 20 drive the grinding wheel 19 to rotate, and when the feeding plate 7 drives the metal plate 6 to move, the metal plate 6 passes between the grinding wheels 19 to complete the grinding and cleaning.

[0057] Step 4: When the electric telescopic rod 25 is completely retracted, the second slide groove 29 no longer squeezes the second roller 33, and the second tension spring 30 drives the first round rod 31 to rise, and the first round rod 31 drives the second round rod 34 to rise in the first slide groove 23, and the second round rod 34 drives the extrusion wheel 14 to rise, and no longer squeezes the metal plate 6. At this time, the lower mold 24 pushes the metal plate 6 upward to make the metal plate 6 abut against the outer wall of the electrode column 3, and then the first mold 2 pushes the metal plate 6 from one side to abut against the electrode column 3, and then the second mold 5 pushes the metal plate 6 from the other side to abut against the electrode column 3 to form the metal plate 6, and finally the welding gun 4 welds the cleaned interface.

[0058] Step 5: After the metal plate 6 is welded, the electric telescopic rod 25 extends to drive the ring 28 to move, and the ring 28 drives the feeding plate 7 to move. At this time, the ring 28 pushes the welded metal plate 6 off the electrode column 3 to complete the unloading.

[0059] In this article, relational terms such as first and second, etc. are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0060] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A muffler welding tool, comprising a support frame (1) and an electrode column (3), a welding gun (4) arranged in an annular shape outside the electrode column (3), a first mold (2), a lower mold (24) and a second mold (5), wherein a feeding plate (7) for conveying a metal plate (6) is arranged on the support frame (1), characterized in that: Also includes: The cleaning mechanism comprises a clamping assembly, a positioning assembly and a first support rod (10) symmetrically mounted on a support frame (1); a servo motor (9) is fixedly mounted on the outer wall of the first support rod (10); an output shaft of the servo motor (9) passes through the first support rod (10) and is mounted with a second gear (21); a first gear (20) is meshed on the upper side of the second gear (21); a grinding wheel (19) is mounted on the side of the first gear (20) and the second gear (21) away from the servo motor (9); when the feeding plate (7) drives the metal plate (6) to move, the clamping assembly first clamps the metal plate (6), the positioning assembly further positions the metal plate (6), and at the same time the grinding wheel (19) cleans the area of ​​the metal plate (6) to be welded; The positioning assembly comprises two protrusions (17) and a translation assembly, wherein the protrusions (17) are symmetrically arranged on the outer wall of the feeding plate (7), and the translation assembly comprises a slide bar (11), and an extrusion rod (22) is rotatably mounted on the upper end surface of the slide bar (11); when the feeding plate (7) drives the protrusions (17) to move and no longer squeezes the translation assembly, the slide bar (11) drives the extrusion rod (22) to position the metal plate (6); The clamping assembly comprises two cylinders (13) and a lifting assembly, wherein the cylinders (13) are symmetrically mounted on the upper end surface of a feeding plate (7), a first sliding groove (23) is provided on the outer wall of the cylinder (13), a second round rod (34) is slidably mounted on the inner wall of the first sliding groove (23), and an extrusion wheel (14) is rotatably mounted on the outer wall of the second round rod (34); when the lifting assembly drives the second round rod (34) to move in the first sliding groove (23), the extrusion wheel (14) clamps the metal plate (6).

2. The muffler welding tool according to claim 1, characterized in that: The translation assembly includes a second support rod (18), the lower end surface of the second support rod (18) is installed on the support frame (1), the outer wall of the support frame (1) is installed with a first tension spring (12), the first tension spring (12) is fixedly connected to the sliding rod (11) on the side away from the second support rod (18), and the first roller (16) is rotatably installed on one side of the sliding rod (11) that passes through the second support rod (18).

3. The muffler welding tool according to claim 1, characterized in that: The lifting assembly includes a first round rod (31), which is slidably installed inside the cylinder (13); a second tension spring (30) is installed on the upper end surface of the first round rod (31); the second tension spring (30) is installed on the inner wall of the cylinder (13) away from the first round rod (31); a pull rod (32) is rotatably installed on the lower end surface of the first round rod (31); and a second roller (33) is symmetrically rotatably installed on the pull rod (32) that passes through the feeding plate (7) away from the first round rod (31).

4. The muffler welding tool according to claim 3, characterized in that: A second sliding groove (29) is provided on the upper end surface of the support frame (1) corresponding to the second roller (33), and the inner wall of the second sliding groove (29) abuts against the second roller (33).

5. The muffler welding tool according to claim 1, characterized in that: A retaining ring (15) is symmetrically mounted on the upper end surface of the feeding plate (7).

6. The muffler welding tool according to claim 1, characterized in that: An electric telescopic rod (25) is mounted on the outer wall of the support frame (1); a circular ring (28) is fixedly mounted on the output shaft of the electric telescopic rod (25); the circular ring (28) is sleeved on the outer wall of the electrode column (3); and the lower end surface of the circular ring (28) is fixedly mounted on the feeding plate (7).

7. The muffler welding tool according to claim 1, characterized in that: A slide rail (27) is symmetrically mounted on the upper end surface of the support frame (1), a slide seat (26) is slidably mounted on the outer wall of the slide rail (27), and the upper end surface of the slide seat (26) is fixedly mounted on the feeding plate (7).

8. The muffler welding tool according to claim 1, characterized in that: A control panel (8) is mounted on the upper end surface of the support frame (1).

9. The muffler welding tool according to claim 1, characterized in that: The extrusion wheel (14) is made of rubber.

10. A muffler welding method, using the muffler welding tool according to claim 1, characterized in that: The following steps are involved: Step 1: When the metal plate (6) is placed on the feeding plate (7), the feeding plate (7) drives the metal plate (6) to move toward one side of the electrode column (3). First, the clamping assembly clamps the metal plate (6) to prevent it from moving along the axial direction of the electrode column (3); Step 2: After the clamping assembly has completed clamping the metal plate (6), the positioning assembly moves the metal plate (6) along the radial direction of the electrode column (3), thereby adjusting the position of the metal plate (6); Step 3: After the clamping assembly and the positioning assembly have completed clamping and positioning of the metal plate (6), the grinding wheel (19) is used to grind and clean the edge of the metal plate (6). After the cleaning is completed, the lower mold (24) makes the metal plate (6) abut against the lower end surface of the electrode column (3), and then the first mold (2) squeezes the side of the metal plate (6), and then the second mold (5) squeezes the other side of the metal plate (6), and finally the welding gun (4) welds it.

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