A double roller liner roll welding equipment

Abstract

This invention belongs to the field of automation equipment technology, specifically referring to a double-roller inner liner welding device, comprising: a machine base; a positioning fixture disposed on the machine base; and a welding mechanism disposed on the side of the overlapping area for fixing the lower ring and upper ring of the inner liner together; wherein, the welding mechanism includes a first welding wheel and a second welding wheel, the first welding wheel and the second welding wheel being located on the inner and outer sides of the overlapping area respectively; and a first drive assembly disposed in the machine base and connected to the first welding wheel and the second welding wheel, for driving the first welding wheel and the second welding wheel to move synchronously on the inner and outer sides of the overlapping area. This invention, through the synchronous operation of the first drive assembly and the second drive assembly, synchronously drives the first welding wheel and the second welding wheel to perform roll welding on both sides of the overlapping area, achieving double-sided welding of the oven inner liner, thereby eliminating internal weld seams, increasing overall aesthetics, and simultaneously reducing the difficulty of the enamel process.

Description

Technical Field

[0001] This invention belongs to the field of automation equipment technology, and specifically refers to a double roller inner liner welding device. Background Technology

[0002] The existing oven liner is made by welding an upper inner liner ring, a lower inner liner ring, and a bottom cover together. During welding, the upper inner liner ring and the lower inner liner ring are positioned and fixed by a clamp, then initially reinforced by spot welding equipment, and then finely processed by roll welding equipment.

[0003] Existing roll welding equipment only performs welding on the outer side of the oven's inner liner, such as... Figure 8 As shown, the existing lower ring of the inner liner has a placement groove for placing the outer end of the upper ring of the inner liner, and the existing roll welding equipment only sets a welding wheel on the outside of the inner liner for welding. Due to the forming and processing problems of the upper and lower rings of the inner liner, when the upper and lower rings of the inner liner are connected opposite each other, it is difficult for the placement groove and the outer end of the upper ring of the inner liner to fit together perfectly. This results in a weld seam 6 on the inner side of the inner liner, which makes the inner side of the inner liner formed by the welding machine uneven. In actual oven products, the inner side of the oven inner liner will be visible to the user when the oven is in use, thus affecting the aesthetics of the product and the quality of the oven. Moreover, after the inner liner of the oven is rolled and welded, it needs to undergo an enamel process, and the aforementioned weld seam 6 will affect the enamel process. Summary of the Invention

[0004] The purpose of this invention is to provide a double-roller inner liner welding device that can effectively improve the processing quality of the inner liner.

[0005] The objective of this invention is achieved as follows:

[0006] A double-roller inner liner welding device, comprising:

[0007] Base;

[0008] A positioning fixture, mounted on the machine base, is used to fix the lower inner liner ring and the upper inner liner ring, and to ensure that the lower inner liner ring and the upper inner liner ring are positioned opposite each other and abut against each other to form an overlapping area; and

[0009] A welding mechanism is located on the side of the overlapping area to fix the lower inner ring to the upper inner ring.

[0010] The welding mechanism includes,

[0011] A first welding wheel and a second welding wheel, the first welding wheel and the second welding wheel being located inside and outside the overlapping area, respectively; and

[0012] A first drive assembly is disposed in the base and connected to the first welding wheel and the second welding wheel, for driving the first welding wheel and the second welding wheel to move synchronously inside and outside the overlapping area.

[0013] Furthermore, the first driving component includes

[0014] The guide rail is vertically arranged on the lower side of the overlapping area;

[0015] A slider is disposed on the guide rail and is connected to a drive motor that drives the slider to move on the guide rail.

[0016] The first welding wheel and the second welding wheel are mounted on the slider portion, and a gap for forming the overlapping area is formed between the first welding wheel and the second welding wheel.

[0017] Furthermore, the first drive assembly also includes a first drive arm and a second drive arm, the lower ends of which are mounted on the slider portion, and the upper ends are respectively connected to the first welding wheel and the second welding wheel.

[0018] Furthermore, the lower ends of the first drive arm and the second drive arm are rotatably mounted on the slider portion, and a first swing rod and a second swing rod are respectively provided laterally on one side of the rotating end of the first drive arm and the second drive arm. A push motor for pushing the first swing rod and the second swing rod is connected to the first swing rod and the second swing rod.

[0019] Furthermore, both the first welding wheel and the second welding wheel include a second driving assembly that drives the first welding wheel and the second welding wheel to rotate. The second driving assembly includes a drive motor and a transmission gear driven by the drive motor. The transmission gear is connected to the first welding wheel / second welding wheel.

[0020] Furthermore, the positioning fixture includes:

[0021] Several positioning columns are set on the machine base to internally limit the lower ring and upper ring of the inner liner;

[0022] A positioning clamp is set on the outside of the positioning column to limit the lower ring and upper ring of the inner liner.

[0023] Furthermore, the positioning fixture includes:

[0024] The first clamp is located on the rear side of the positioning column and is used to push the lower ring of the inner liner, which is located between the first clamp and the positioning column, against the positioning column.

[0025] The second clamp is disposed on the upper side of the positioning column; the second clamp has an open state and a closed state, and when the second clamp is in the closed state, the second clamp is limited to the upper side of the lower ring of the inner liner;

[0026] The third clamp is set on the left and right sides of the positioning column to limit the left and right sides of the lower ring of the inner liner.

[0027] Furthermore, the base is provided with

[0028] The first slide rail assembly that moves laterally, and

[0029] A second slide rail assembly that moves longitudinally is disposed on the first slide rail assembly and is driven to move by the first slide rail assembly; the positioning clamp is provided on the second slide rail assembly.

[0030] Furthermore, a mounting bracket is provided on one side of the positioning column, the first clamp includes a first push rod provided at the bottom of the mounting bracket, and the second clamp includes a flip plate provided at the top of the mounting bracket.

[0031] The outstanding and beneficial technical effects of this invention compared to the prior art are:

[0032] The present invention achieves double-sided welding of the oven liner by synchronously driving the first and second driving components to perform roll welding on both sides of the overlapping area, thereby eliminating internal weld seams, increasing overall aesthetics, and reducing the difficulty of the enamel process.

[0033] Because the positioning columns are mounted on the second sliding plate, the distance between the two positioning columns can be changed by altering their lateral and longitudinal positions on the base to accommodate different sizes of inner liner lower rings. Simultaneously, since both the second and first clamps are mounted on the second sliding plate, they can move simultaneously with the positioning columns for adaptation. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0035] Figure 2 This is a structural diagram of the positioning fixture. Figure 1 .

[0036] Figure 3 This is a structural diagram of the positioning fixture. Figure 2 .

[0037] Figure 4 This is a schematic diagram of the positioning fixture.

[0038] Figure 5 This is a schematic diagram of the welding mechanism installation.

[0039] Figure 6 This is a schematic diagram of the overall welding mechanism.

[0040] Figure 7 This is a schematic diagram of the explosion of the first welding wheel.

[0041] Figure 8This is a schematic diagram of the inner liner assembly in the background art.

[0042] Figure 9 This is a schematic diagram of the overlapping area before the inner liner is welded.

[0043] Figure 10 This is a schematic diagram of the overlapping area after the inner liner is welded.

[0044] The meaning of the labels in the diagram:

[0045] 1. Base; 11. First slide rail assembly; 111. First slide rail; 112. First slide plate; 113. Through-hole; 12. Second slide rail assembly; 121. Second slide rail; 122. Second slide plate; 13. Mounting platform; 131. Opening; 21. Lower inner liner ring; 22. Upper inner liner ring; 23. Overlapping area; 3. Welding mechanism; 31. First welding wheel; 32. Second welding wheel; 33. First drive assembly; 331. Guide rail section; 332. Slider section; 333. First drive arm; 334. Second drive arm; 335, clearance; 336, first swing arm; 337, second swing arm; 338, push motor; 34, second drive assembly; 341, drive motor; 342, transmission gear; 343, control assembly; 344, bevel gear; 4, positioning column; 5, positioning fixture; 51, first fixture; 511, first push rod; 52, second fixture; 521, flip plate; 53, third fixture; 531, panel; 532, abutting push rod; 54, mounting bracket; 6, weld. Detailed Implementation

[0046] The present invention will be further described below with reference to specific embodiments:

[0047] A double-roller inner liner welding device, comprising:

[0048] Base 1;

[0049] A positioning fixture is set on the machine base 1 to fix the lower inner liner ring 21 and the upper inner liner ring 22, and to make the lower inner liner ring 21 and the upper inner liner ring 22 face each other to form an overlapping area 23.

[0050] as well as

[0051] Welding mechanism 3 is set on the side of overlapping area 23 to fix the lower inner ring 21 and the upper inner ring 22 of the inner liner together.

[0052] The welding mechanism 3 includes,

[0053] A first welding wheel 31 and a second welding wheel 32, the first welding wheel 31 and the second welding wheel 32 being located inside and outside the overlapping area 23, respectively; and

[0054] The first drive assembly 33 is disposed in the base 1 and connected to the first welding wheel 31 and the second welding wheel 32, and is used to drive the first welding wheel 31 and the second welding wheel 32 to move synchronously inside and outside the overlapping area 23.

[0055] like Figure 1 As shown, the base 1 is provided with a mounting platform 13, and the positioning fixture and welding mechanism 3 are provided on the mounting platform 13; an opening 131 is provided in the center of the mounting platform 13 for placing the welding mechanism 3, so that the welding mechanism 3 can move from bottom to top to connect the opposing and abutting lower inner liner ring 21 and upper inner liner ring 22.

[0056] Specifically, such as Figure 3 As shown, a first slide rail assembly 11 for lateral movement is provided on the mounting platform 13 of the base 1; wherein, the first slide rail assembly 11 includes a first slide rail 111 laterally arranged on the mounting platform 13, and two first slide plates 112 are installed on the first slide rail 111 with the opening 131 as the center. The first slide plates 112 are connected to a power source that drives them to move laterally on the first slide rail 111. The power source for lateral movement is generally a servo motor. The servo motor drives the first slide plates 112 to move through a lead screw and sleeve structure. A second slide rail assembly 12 for longitudinal movement is provided on the first slide plate 112. Specifically, the second slide rail assembly 12 includes two second slide rails 121 respectively disposed on the two first slide plates 112, and a second slide plate 122 respectively disposed on the two second slide rails 121, and a longitudinal motion power source for driving the second slide plate 122 to move. Similarly, the longitudinal motion power source is generally a servo motor, which drives the second slide plate 122 to move through a lead screw and sliding sleeve structure. The positioning fixtures are provided on the first slide plate 112 and the second slide plate 122. By adjusting the position of the second slide plate 122 and the first slide plate 112, the layout of each positioning fixture is adjusted, thereby obtaining an installation position that can accommodate different sizes of inner liner, thus adapting to inner liners of different sizes.

[0057] Specifically, the positioning fixture includes a positioning column 4, which is mounted on the machine base 1 and used to internally limit the lower inner ring 21 and the upper inner ring 22 of the inner liner; and

[0058] The positioning clamp 5 is set on the outside of the positioning column 4 and is used to limit the lower ring 21 and the upper ring 22 of the inner liner.

[0059] Combination Figure 2 , 3As shown, the lower inner liner ring 21 in this patent is formed by bending a flat plate into a U-shaped component using an inner liner ring 21 bending device. After being combined with the upper inner liner ring 22, it forms an approximately square annular component. The overlapping area 23 refers to the overlapping part where the side end of the lower inner liner ring 21 intersects with the corresponding side end of the upper inner liner ring 22 after the lower inner liner ring 21 and the upper inner liner ring 22 are connected to form an annular component. Since the lower inner liner ring 21 is U-shaped, there are two overlapping areas 23 on the entire annular component, and two welding mechanisms 3 are required for processing. Before performing the roll welding operation, the manufacturer will first perform a spot welding operation on the overlapping area 23 of the lower inner liner ring 21 and the upper inner liner ring 22, and then perform roll welding to achieve preliminary determination. In this embodiment, two positioning posts 4 are fixed to the second sliding plate 122. Specifically, each post 4 is a rectangular profile fixed to the second sliding plate 122 by bolts. The two positioning posts 4 are positioned near the inner liner lower ring 21, and the lateral distance between them is approximately equal to the inner width of the inner liner lower ring 21. This ensures that when the inner liner lower ring 21 is installed on the positioning posts 4, the two positioning posts 4 are positioned at the two corners of the inner liner lower ring 21 for internal positioning. In some embodiments, multiple positioning posts 4 can be provided, but two positioning posts 4 are sufficient to meet the usage requirements, and space is needed to install the welding mechanism 3 to perform internal and external welding on the outer end of the inner liner lower ring 21. Since the positioning posts 4 are located on the second sliding plate 122, the distance between the two positioning posts 4 can be changed by altering their lateral and longitudinal positions on the base 1 to accommodate inner liner lower rings 21 of different sizes.

[0060] Furthermore, the positioning fixture 5 includes:

[0061] The first clamp 51 is located on the rear side of the positioning column 4 and is used to push the lower inner ring 21 of the inner liner, which is located between the first clamp 51 and the positioning column 4, against the positioning column 4.

[0062] The second clamp 52 is disposed on the upper side of the positioning column 4; the second clamp 52 has an open state and a closed state. When the second clamp 52 is in the closed state, the second clamp 52 is limited to the upper side of the lower ring 21 of the inner liner.

[0063] The third clamp 53 is set on the left and right sides of the positioning column 4 to limit the left and right sides of the lower ring 21 of the inner liner.

[0064] Specifically, combined Figure 3 , 4As shown, a mounting bracket 54 is provided on the rear side of the positioning column 4. Specifically, the mounting bracket 54 is a mounting profile fixed to the second sliding plate 122. The first clamp 51 includes two sets of first push rods 511 disposed on the lower and upper sides of the mounting bracket 54. A cylinder for driving the first push rods 511 is disposed on the other side of the mounting profile. The first push rods 511 push the lower inner ring 21 towards the positioning column 4 to clamp and position the rear end of the lower inner ring 21. The second clamp 52 includes a mounting bracket on the top of the mounting bracket 54. A flip plate 521 is provided, and a flip cylinder is provided on the other side of the mounting bracket 54 to drive the flip plate 521 to flip. When the flip plate 521 is in the open state, it is longitudinally positioned on the upper rear side of the positioning column 4. At this time, the lower inner liner ring 21 can be placed outside the positioning column 4 from top to bottom. After placement, the flip cylinder operates to drive the flip plate 521 to flip downward and place it horizontally on the upper side of the positioning column 4, thereby upper-limiting the lower inner liner ring 21. Then, the first clamp 51 operates to perform rear limit. Since the second clamp 52 and the first clamp 51 are both set on the second slide plate 122, they can move simultaneously with the movement of the positioning column 4 for adaptation. Furthermore, the movable second clamp 52, first clamp 51, and positioning column 4 allow for an internal expansion installation when installing the lower inner liner ring 21. That is, the lower inner liner ring 21 is placed first, and then the positioning column 4 expands outward to abut against the inner side of the lower inner liner ring 21. The second clamp 52 and the first clamp 51 are then clamped against the outer side of the lower inner liner ring 21.

[0065] The third clamp 53 is also mounted on the second slide plate 122, located on the outer sides of the two positioning columns 4. It has a panel portion 531 that abuts against the left and right sides of the lower inner ring 21. The panel portion 531 is driven by a drive cylinder to move left and right, allowing it to be positioned against the left and right sides of the lower inner ring 21 for limiting its movement. A telescopic push rod 532 is also provided in the panel portion 531, with its front end facing the overlapping area 23. This push rod abuts against one side of the overlapping area 23 for limiting its movement, thereby making the roll welding more stable.

[0066] Furthermore, the first driving component 33 includes:

[0067] The guide rail 331 is vertically disposed on the lower side of the overlapping area 23;

[0068] The slider part 332 is disposed on the guide rail part 331 and is connected to a drive motor that drives the slider part 332 to move on the guide rail.

[0069] The first drive arm 333 and the second drive arm 334 are mounted on the slider part 332 at their lower ends and connected to the first welding wheel 31 and the second welding wheel 32 at their upper ends respectively. A gap 335 is provided between the first drive arm 333 and the second drive arm 334 for placing the overlapping area 23.

[0070] Combination Figure 1 , 5 6, 9, the guide rail 331 is fixed to the lower side of the first slide plate 112, and extends downward through the opening 131 on the mounting platform 13. The slider 332 is disposed at the bottom of the guide rail 331. The guide rail 331 is provided with a servo motor that drives the slider 332 to move on the guide rail 331. The first drive arm 333 and the second drive arm 334 are respectively disposed on the left and right sides of the slider 332, thereby forming the gap 335 between the first drive arm 333 and the second drive arm 334. The first welding wheel 31 and the second welding wheel 32 are respectively disposed on the top of the first drive arm 333 and the second drive arm 334. The first slide plate 112 is provided with an opening 113 for the first welding wheel 31 and the second welding wheel 32 to be exposed outward, and the first welding wheel 31 and the second welding wheel 32 are located on the left and right sides of the overlap area 23.

[0071] In fact, the lower ends of the first drive arm 333 and the second drive arm 334 are rotatably mounted on the slider portion 332. A first swing rod 336 and a second swing rod 337 are respectively laterally arranged on one side of the rotating end of the first drive arm 333 and the second drive arm 334. The first drive arm 333 and the first swing rod 336 are connected to form an L-shape. The first swing rod 336 and the second swing rod 337 extend towards the same side, and a double-headed push motor 338 is provided at their extended ends. When the push motor 338 is working, it drives the first swing rod... The lever 336 swings clockwise and drives the second swing lever 337 to swing counterclockwise, causing the first drive arm 333 and the second drive arm 334 to rotate around their own rotation point toward the overlapping area 23, so that the first welding wheel 31 and the second welding wheel 32 abut against the overlapping area 23; at this time, roll welding can be performed, the slider part 332 moves upward, and at the same time drives the first drive arm 333 and the second drive arm 334 to move from bottom to top, so that the first welding wheel 31 and the second welding wheel 32 fully contact the entire overlapping area 23.

[0072] Both the first welding wheel 31 and the second welding wheel 32 include a second drive assembly 34 that drives the first welding wheel 31 and the second welding wheel 32 to rotate. Figure 6 , 7As shown, taking the first welding wheel 31 as an example, a control component 343 providing welding capability to the first welding wheel 31 is connected to its rear side. The second drive component 34 includes a drive motor 341 disposed on the lower side of the first welding wheel 31. The drive motor 341 is equipped with a bevel gear 344. A transmission gear 342 is connected to the first welding wheel 31. The bevel gear 344 meshes with the transmission gear 342, thereby driving the first welding wheel 31 to rotate through the drive motor 341. It should be noted that the operating frequencies of the drive motors 341 on the first welding wheel 31 and the second welding wheel 32 should be the same, so as to drive the first welding wheel 31 and the second welding wheel 32 to rotate synchronously, thereby obtaining the best welding effect.

[0073] In this embodiment, two guide rails 331 are provided, corresponding to the two first sliding plates 112 and the left and right sides of the lower inner ring 21. They are used to drive two sets of first welding wheels 31 and second welding wheels 32 to simultaneously perform roll welding on the left and right sides of the lower inner ring 21. Figure 10 As shown, through the synchronous operation of the first drive component 33 and the second drive component 34, the first welding wheel 31 and the second welding wheel 32 are synchronously driven to perform roll welding on both sides of the overlapping area 23, thereby achieving double-sided welding of the oven liner, which can eliminate the internal weld seam 6, increase the overall aesthetics, and at the same time reduce the difficulty of the enamel process.

[0074] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A double-roller inner liner welding device, characterized in that, include: The base (1) is provided with a mounting platform (13) and an opening (131) is provided in the center of the mounting platform (13); A positioning fixture is provided on the mounting platform (13) to fix the lower inner liner ring (21) and the upper inner liner ring (22), and to make the lower inner liner ring (21) and the upper inner liner ring (22) face each other to form an overlapping area (23); and Welding mechanism (3) is set on the side of the overlapping area (23). The lower inner ring (21) and the upper inner ring (22) are welded from bottom to top by the welding mechanism (3). The welding mechanism (3) includes, The guide rail (331) is vertically arranged on the lower side of the overlapping area (23); The slider (332) is disposed on the guide rail (331) and is connected to a drive motor that drives the slider (332) to move on the guide rail; A first drive arm (333) and a second drive arm (334) are connected to the upper ends of the first drive arm (333) and the second drive arm (334) respectively. The lower ends of the first drive arm (333) and the second drive arm (334) are rotatably mounted on the slider part (332). A first swing rod (336) and a second swing rod (337) are provided laterally on one side of the rotating end of the first drive arm (333) and the second drive arm (334). A push motor (338) for pushing the first swing rod (336) and the second swing rod (337) is connected to the first swing rod (336) and the second swing rod (337). The first welding wheel (31) and the second welding wheel (32) are located inside and outside the overlapping area (23), respectively. The first welding wheel (31) and the second welding wheel (32) are driven by the slider (332) to move synchronously from bottom to top to weld the opposing and abutting lower inner ring (21) and upper inner ring (22).

2. The double-roller inner liner welding equipment according to claim 1, characterized in that: Both the first welding wheel (31) and the second welding wheel (32) include a second drive assembly (34) that drives the first welding wheel (31) / second welding wheel (32) to rotate. The second drive assembly (34) includes a drive motor (341) and a transmission gear (342) driven by the drive motor (341). The transmission gear (342) is connected to the first welding wheel (31) / second welding wheel (32).

3. A double-roller inner liner welding device according to any one of claims 1 and 2, characterized in that, The positioning fixture includes: Several positioning columns (4) are set on the base (1) to internally limit the lower ring (21) of the inner liner and the upper ring (22) of the inner liner; The positioning clamp (5) is set on the outside of the positioning column (4) to limit the lower ring (21) of the inner liner and the upper ring (22) of the inner liner.

4. The double-roller inner liner welding equipment according to claim 3, characterized in that, The positioning fixture (5) includes: The first clamp (51) is set on the rear side of the positioning column (4) and is used to push the lower ring (21) of the inner liner located between the first clamp (51) and the positioning column (4) against the positioning column (4); The second clamp (52) is disposed on the upper side of the positioning column (4); the second clamp (52) has an open state and a closed state. When the second clamp (52) is in the closed state, the second clamp (52) is limited to the upper side of the lower ring (21) of the inner liner. The third clamp (53) is set on the left and right sides of the positioning column (4) to limit the left and right sides of the lower ring (21) of the inner liner.

5. The double-roller inner liner welding equipment according to claim 3, characterized in that: The base (1) is provided with The first slide rail assembly (11) that moves laterally, and The second slide rail assembly (12) that moves longitudinally is disposed on the first slide rail assembly (11) and is driven to move by the first slide rail assembly (11); the positioning clamp (5) is provided on the second slide rail assembly (12).

6. The double-roller inner liner welding equipment according to claim 4, characterized in that: The positioning column (4) is provided with a mounting bracket (54) on one side. The first clamp (51) includes a first push rod (511) provided at the bottom of the mounting bracket (54). The second clamp (52) includes a flip plate (521) provided at the top of the mounting bracket (54).

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