Forming and welding device and welding method for oil screen and smoke hood of range hood

Abstract

The invention discloses a forming and welding device and method for an oil screen and a smoke hood of a range hood, and particularly relates to the technical field of welding, the forming and welding device for the oil screen and the smoke hood of the range hood comprises a welding base, and further comprises a central stand column which is vertically arranged at the center of the welding base, and a plurality of splicing units are arranged on the periphery of the central stand column in a circular array mode. Under the control of the first adjusting part of the adjusting unit, the limiting part acts to clamp and limit the side plate of the smoke hood, the second adjusting part is synchronously linked for control, the second adjusting part cooperatively controls the splicing units to be close to each other and gather together to splice the smoke hood into a whole, the construction technology is optimized, and the construction efficiency is improved. According to the welding device, repeated debugging and assembling of workers are not needed, under the control of the adjusting unit, clamping, positioning and synchronous splicing operation of all the smoke hood side plates can be synchronously completed, the overall production efficiency is improved, welding consistency is guaranteed, and the overall welding quality is synchronously improved.

Description

Technical Field

[0001] The present invention relates to the technical field of welding, and particularly to a welding device and a welding method for forming an oil mesh smoke hood of a range hood. Background Art

[0002] ‌The oil mesh smoke hood is a commonly used oil fume exhaust device in the kitchen. The oil mesh smoke hood directly exhausts the oil fume generated by the stove in the kitchen to the outside through an exhaust fan. It is a relatively simple, economical, and commonly used oil fume exhaust device in the current kitchen configuration. However, there are various types of oil mesh smoke hoods, which are freely designed according to different working environments. Most oil mesh smoke hoods are composed of a top cover and multiple side plates, and are formed by combining and welding the top cover and multiple side plates. Therefore, in the production of oil mesh smoke hoods, a welding device is required to complete the welding and forming process of the oil mesh smoke hood.

[0003] Referring to a 360° flipping laser welding device for a range hood outer cover disclosed in a patent application with a publication number of CN108723589A, the laser welding device is equipped with a 360° flipping laser welding head, which can ensure that the object to be welded receives welding in all directions of 360°. The device is also equipped with a range hood outer cover, which can timely and reasonably discharge the smoke generated by the device outside the device without polluting the air, fully ensuring the physical health of the welding workers and meeting the needs of modern production.

[0004] Currently, a laser welding device is mostly used to complete the welding process for the oil mesh smoke hood. For example, the above-mentioned laser welding device also uses a laser welding head for welding and forming. However, when the current welding device is welding, a clamping mechanism is mostly used to separately clamp and position each part of the smoke hood. After a single welding is completed, the subsequent combined welding of other parts can be carried out. This makes the overall welding process relatively cumbersome, and it is impossible to perform synchronous integrated combination splicing and stable limiting operations on the structures of each part of the smoke hood, increasing the workload of the staff for repeated adjustment. At the same time, it leads to a decrease in welding efficiency, and during the repeated debugging process, it is extremely easy to interfere with the welding quality of the smoke hood product, resulting in problems such as inconsistent welding, affecting the subsequent service life of the smoke hood. Summary of the Invention

[0005] The purpose of the present invention is to provide a welding device and a welding method for forming an oil mesh smoke hood of a range hood to solve the above technical problems.

[0006] To solve the above technical problems, the present invention is realized through the following technical solutions.

[0007] The present invention is a welding device for forming an oil mesh smoke hood of a range hood, including a welding base, and further including: The central column is vertically arranged at the center of the welding base. A plurality of splicing units are arranged in a circular array around the central column. Each splicing unit includes a limiting member and a guiding member. The limiting member is used to complete the limitation of the hood, and the guiding member is used to complete the positioning of the initial position of the hood; The top cover unit is arranged at the top of the central column and cooperates with the plurality of splicing units to complete the combined splicing of the hood; The adjustment unit is arranged on the welding base for the continuous control operation of the plurality of splicing units. The adjustment unit includes a first adjusting member and a second adjusting member. The first adjusting member is used to synchronously control a plurality of limiting members to complete the clamping action, and the second adjusting member is used to control a plurality of limiting members to complete the synchronous gathering and splicing combination operation. The intermittent control of the plurality of splicing units is completed through the cooperation of the first adjusting member and the second adjusting member; The welding unit is arranged on the welding base to complete the circumferential movement welding operation.

[0008] Furthermore, each limiting member includes: The telescopic sleeve is arranged on the side wall of the central column. A telescopic arm is slidably engaged in the telescopic sleeve. A pushing column is rotatably installed on the bottom of the telescopic arm near the central column; The limiting spring is arranged between the telescopic arm and the telescopic sleeve, and the telescopic arm is controlled to reset in the telescopic sleeve through the limiting spring; The fixing member is arranged at the front end of the telescopic arm for the fixing operation of the hood.

[0009] Furthermore, the fixing member includes: The concave clamping seat is arranged at the front end of the telescopic arm. A plurality of first rollers are rotatably arranged in a rectangle on the inner side of the concave clamping seat. A profiling support frame is detachably and fixedly installed on the concave clamping seat; The sliding seat is slidably engaged and arranged on one side inside the concave clamping seat. A plurality of second rollers are rotatably arranged in a rectangle on the inner side of the sliding seat; The extrusion cavity is arranged on the upper side of the concave clamping seat. A push arm connected to the sliding seat is slidably and sealingly installed in the extrusion cavity. A first spring is arranged between the push arm and the extrusion cavity.

[0010] Furthermore, the first adjusting member includes: The gear ring is rotatably sleeved on the bottom of the central column. A first motor is installed on one side of the central column through a bracket. A first gear meshing with the gear ring is installed at the output end of the first motor; The jacking sleeve is arranged on one side of the top of the gear ring. A jacking arm is slidably installed in the jacking sleeve. A guiding roller is rotatably installed on the side of the jacking arm facing the central column; The guiding track is opened on the side wall of the central column. The guiding track is composed of an arc-shaped lifting groove and a semi-circular groove. The arc-shaped lifting groove is opened on the central column, and the semi-circular groove is opened on the central column and communicates with the arc-shaped lifting groove. And the guiding roller is correspondingly slidably engaged into the guiding track, and the movement control of the guiding roller is completed through the arc-shaped lifting groove and the semi-circular groove.

[0011] Furthermore, the first adjusting member further includes: An annular temporary storage cavity is arranged on the central column. An extrusion ring is slidably and sealingly installed in the annular temporary storage cavity. An annular track is arranged at the bottom of the extrusion ring, and the top of the jacking arm is correspondingly slidably engaged into the annular track; A plurality of limiting rods are arranged in a circular array on the extrusion ring. Each limiting rod slides through the annular temporary storage cavity. A second spring is sleeved outside each limiting rod, and each second spring is correspondingly arranged between the annular temporary storage cavity and the extrusion ring; A plurality of conveying pipes are connected in a circular array and arranged on the top of the annular temporary storage cavity. The plurality of conveying pipes communicate with the plurality of fixing members through pipes respectively.

[0012] Furthermore, the second adjusting member includes: A first ring is concentrically arranged at the bottom of the central column. Two moving areas are opened on the first ring. A sliding member is slidably engaged in each moving area. A third spring is arranged between each moving area and the sliding member; A second ring is concentrically arranged above the first ring and is detachably and fixedly connected to the two sliding members. A contact block is installed on one side of the second ring, and a contact arm is installed on one side of the jacking sleeve of the first adjusting member; A third ring is concentrically arranged above the second ring through a bracket. A plurality of arc-shaped extrusion platforms are arranged in a circular array on the inner wall of the third ring. Each arc-shaped extrusion platform contacts with the plurality of limiting members respectively to complete the control, and the movement control of the limiting members is completed through the track line formed by the arc-shaped extrusion platforms.

[0013] Furthermore, the top cover unit includes: A lifting area is opened at the top of the central column. A lifting column slides through the lifting area. An electric push rod connected to the bottom of the lifting column is arranged in the lifting area; A limiting ring is arranged at the top of the lifting column. A limiting ring protrudes concentrically from the top of the limiting ring; A limiting bladder belt is sleeved outside the limiting ring; An annular area is opened at the top of the limiting ring. A contact ring is slidably and sealingly installed in the annular area, and the annular area communicates with the limiting bladder belt through a pipe.

[0014] Furthermore, each guiding member includes: An extension arm is arranged on the limiting piece. Two moving frames are symmetrically arranged at both ends of the extension arm. A lead screw is rotatably installed in each moving frame. A lead screw nut is slidably engaged in each moving frame, and the lead screw nut is correspondingly sleeved outside the lead screw. A clamping arm is installed on each lead screw nut. Positioning pieces are arranged at the tails of the clamping arms. The initial positioning of the smoke hood is completed through the two positioning pieces. A synchronous shaft is rotatably arranged between the two moving frames and is in transmission connection with the two lead screws.

[0015] Furthermore, the welding unit includes: An annular internal gear ring is rotatably arranged on the welding base. A second motor is hidden on the welding base, and a second gear meshing with the annular internal gear ring is installed at the output end of the second motor. A welding arm is arranged on one side of the annular internal gear ring. A circular ring track slidably engaged with the welding arm is arranged on the welding base. A welding robot is arranged at the tail of the welding arm.

[0016] The present invention also provides a forming and welding method for the oil mesh smoke hood of an oil fume machine. The welding method specifically includes the following steps: Step 1: Assemble multiple smoke hood side plates to multiple splicing units correspondingly, and assemble the smoke hood top plate to the top cover unit. Step 2: Complete the preliminary positioning operation of the smoke hood side plates through the guiding piece and the limiting piece. Step 3: Under the control of the adjusting unit's first adjusting piece, make the limiting piece act to clamp and limit the smoke hood side plates. Step 4: Coordinate and control multiple splicing units to move closer to each other through the adjusting unit's second adjusting piece to splice the smoke hoods into a whole, optimizing the construction process. Step 5: Complete the synchronous splicing and positioning of the smoke hood top plate under the control of the top cover unit, and then start the welding unit to perform welding construction on the joints of the spliced smoke hoods.

[0017] Compared with the prior art, the beneficial effects of the present invention are: By providing a splicing unit, the present invention first places each smoke hood side plate on the concave clamping seat to complete preliminary positioning. At the same time, with the help of the profiling support frame contacting the smoke hood side plate to complete internal support, thus ensuring the stable state of the smoke hood side plate and improving the supporting force. By providing a guiding piece, its two sides contact the positioning piece to complete the limitation, so that the smoke hood side plate is placed on the concave clamping seat at a predetermined position, which is convenient for construction personnel to freely adjust according to construction requirements. The method of synchronously adjusting the two positioning pieces simplifies the adjustment steps and is convenient for operation. The present invention is provided with an adjustment unit. Under the control of the first adjustment member of the adjustment unit, the limiting member is actuated to clamp and limit the side plate of the smoke hood. At the end of the control process of the first adjustment member, the second adjustment member is synchronously linked for control. Through the collaborative control of the second adjustment member, multiple splicing units approach and gather together to splice the smoke hood into a whole, optimizing the construction process, eliminating the need for repeated debugging and assembly by workers, improving the overall production efficiency, ensuring the consistency of welding, and simultaneously enhancing the overall welding quality. The present invention is provided with a top cover unit. First, the top plate of the smoke hood is placed on the limiting ring, and preliminary limitation is completed by the limiting ring extending to the air outlet position of the top plate of the smoke hood. Then, the top plate of the smoke hood exerts its own weight on the contact ring, controlling the contact ring to move downward within the annular area, pushing the medium within the annular area into the limiting bladder belt to cause it to expand, enabling self-adaptive expansion and fixation of the top plate of the smoke hood. Subsequently, by simply controlling the electric push rod, the lifting column can be moved downward within the lifting area to complete the splicing of the top plate of the smoke hood.

[0018] Of course, it is not necessary for any product implementing the present invention to simultaneously achieve all the above-mentioned advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the overall front view of the present invention; Figure 2 is the installation schematic diagram of the side plate of the smoke hood of the present invention on the splicing unit; Figure 3 is the distribution schematic diagram of multiple splicing units of the present invention; Figure 4 is the distribution schematic diagram of the splicing unit and the top cover unit of the present invention; Figure 5 is the schematic diagram of the welding unit of the present invention; Figure 6 is the installation schematic diagram of the guiding member of the present invention on the splicing unit; Figure 7 is the distribution schematic diagram of the guiding member and the profiling support frame of the present invention; Figure 8 is the schematic diagram of the guiding member of the present invention; Figure 9 is the installation schematic diagram of the top cover unit of the present invention on the central column; Figure 10 is the schematic diagram of the top cover unit of the present invention; Figure 11 is the installation schematic diagram of the adjustment unit of the present invention on the central column; Figure 12 is the schematic diagram of the adjustment unit of the present invention; Figure 13 is the schematic diagram of the first adjustment member of the present invention; Figure 14Schematic diagram of the guiding track of the present invention opened on the central column; Figure 15 Schematic diagram of the installation of the toothed ring of the present invention on the central column.

[0020] In the figure: 1, welding base; 2, central column; 3, telescopic sleeve; 4, telescopic arm; 5, pushing column; 6, limiting spring; 7, concave clamp seat; 8, profiling support; 9, sliding seat; 10, extrusion cavity; 11, pushing arm; 12, toothed ring; 13, first gear; 14, jacking sleeve; 15, jacking arm; 16, guiding roller; 17, guiding track; 171, arc-shaped lifting groove; 172, semi-circular groove; 18, annular temporary storage cavity; 19, extrusion ring; 20, annular track; 21, limiting rod; 22, conveying pipe; 23, first ring; 24, moving area; 25, sliding part; 26, third spring; 27, second ring; 28, contact block; 29, contact arm; 30, third ring; 31, arc-shaped extrusion table; 32, lifting area; 33, lifting column; 34, electric push rod; 35, limiting ring; 36, limiting ring; 37, limiting bladder belt; 38, annular area; 39, contact ring; 40, sliding rod; 41, extension arm; 42, moving frame; 43, lead screw; 44, lead screw nut; 45, positioning part; 46, synchronous shaft; 47, annular internal toothed ring; 48, second gear; 49, welding arm; 50, welding robot. Detailed implementation mode

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0022] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery", etc. indicating the orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0023] Embodiment 1: The present invention provides a technical solution: As Figures 1 to 4 shown, an oil fume machine oil mesh smoke hood forming and welding device includes a welding base 1, and further includes: A central column 2, vertically arranged at the center of the welding base 1, and a plurality of splicing units are arranged in a circular array around the central column 2. Each splicing unit includes a limiting part and a guiding part. The limiting part is used to complete the limitation of the smoke hood, and the guiding part is used to complete the positioning of the initial position of the smoke hood; A top cover unit, arranged at the top of the central column 2 and cooperating with the plurality of splicing units to complete the combined splicing of the smoke hood; An adjustment unit is arranged on the welding base 1 for continuous control operations of multiple splicing units. The adjustment unit includes a first adjustment member and a second adjustment member. The first adjustment member is used to synchronously control multiple limiting members to complete the clamping action, and the second adjustment member is used to control multiple limiting members to complete the synchronous gathering and splicing combination operation. The intermittent control of multiple splicing units is completed through the cooperation of the first adjustment member and the second adjustment member; A welding unit is arranged on the welding base 1 to complete the circumferential movement welding operation.

[0024] Among them, electrical components such as the electric push rod 34, the first motor, and the second motor are all connected with switches through wires, and the switches are electrically connected with a controller. The specific structure of the controller is not limited. Absolute encoders are installed on the first motor and the second motor for accurate positioning of the first motor and the second motor.

[0025] Embodiment 2: Based on the splicing unit provided in Embodiment 1, this embodiment provides a further technical solution for the splicing unit.

[0026] Each limiting member includes: A telescopic sleeve 3 is arranged on the side wall of the central column 2. A telescopic arm 4 is slidably engaged in the telescopic sleeve 3, and the front end of the telescopic arm 4 slides through the telescopic sleeve 3. A pushing column 5 is rotatably installed on one side of the bottom of the telescopic arm 4 close to the central column 2; A limiting spring 6 is arranged between the telescopic arm 4 and the telescopic sleeve 3, and the telescopic arm 4 is controlled to reset in the telescopic sleeve 3 through the limiting spring 6; A fixing member is arranged at the front end of the telescopic arm 4 for fixing the smoke hood; This fixing member includes: A concave clamping seat 7 is arranged at the front end of the telescopic arm 4. A plurality of first rollers are rotatably arranged in a rectangular shape on the inner side of the concave clamping seat 7, and a profiling support 8 is detachably and fixedly installed on the concave clamping seat 7; A sliding seat 9 is slidably engaged and arranged on one side inside the concave clamping seat 7. A slideway matching the sliding seat 9 is opened on the concave clamping seat 7, and a plurality of second rollers are rotatably arranged in a rectangular shape on the inner side of the sliding seat 9; An extrusion cavity 10 is arranged on one side of the concave clamping seat 7. A push arm 11 connected to the sliding seat 9 is slidably and hermetically installed in the extrusion cavity 10, and a first spring is arranged between the push arm 11 and the extrusion cavity 10; It should be noted that when initially positioning each side plate of the fume hood: by providing a splicing unit, first place each side plate of the fume hood on the concave clamp seat 7 to complete the initial positioning. At the same time, with the help of the profiling support 8 in contact with the side plate of the fume hood to complete the internal support, thus ensuring the stable state of the side plate of the fume hood and improving the supporting force. By providing a guiding member, when the side plate of the fume hood is placed on the concave clamp seat 7, its two sides come into contact with the positioning members 45 to complete the restriction, so that the side plate of the fume hood is placed on the concave clamp seat 7 at a predetermined position. And the distance between the two positioning members 45 controls the two lead screws 43 by operating the synchronous shaft 46. Under the restriction of the moving frame 42, the two positioning members 45 can be controlled to approach each other and move away from each other, which is convenient for construction workers to freely adjust according to the construction requirements. Adopting the synchronous adjustment method of the two positioning members 45 simplifies the adjustment steps and is convenient for operation; As Figure 6 , Figure 7 and Figure 8 shown, in the embodiment of the present invention, each guiding member includes: An extension arm 41 is arranged on the telescopic sleeve 3 of the limiting member. Two moving frames 42 are symmetrically arranged at both ends of the extension arm 41. A lead screw 43 is rotatably installed in each moving frame 42. The thread directions of the lead screws 43 on the two moving frames 42 are opposite, so that the two lead screw nuts 44 can approach each other and move away from each other. A lead screw nut 44 is slidably engaged in each moving frame 42, and the lead screw nut 44 is correspondingly sleeved outside the lead screw 43. A clamping arm is installed on each lead screw nut 44, and a positioning member 45 is arranged at the tail of the clamping arm. The initial positioning of the fume hood is completed by the two positioning members 45; A synchronous shaft 46 is rotatably arranged between the two moving frames 42 and is in transmission connection with the two lead screws 43; As Figure 5 shown, the welding unit includes: An annular internal gear ring 47 is rotatably arranged on the welding base 1. A second motor is hidden on the welding base 1, and a second gear 48 meshing with the annular internal gear ring 47 is installed at the output end of the second motor; A welding arm 49 is arranged on one side of the annular internal gear ring 47, and a circular ring track slidably engaged with the welding arm 49 is arranged on the welding base 1. A welding robot 50 is arranged at the tail of the welding arm 49. The welding processing of the fume hood is completed by the welding robot 50, and the welding robot 50 is composed of a robotic arm and a welding system. The welding processing of the fume hood is completed by the cooperation of the robotic arm and the welding system. In order to increase the welding range, a three-axis electric adjustment table is added at the connection between the welding arm 49 and the welding robot 50 to increase the adjustment range of the welding robot 50. At the same time, an electric rotary table can be installed on the three-axis electric adjustment table to control the welding robot 50 to perform flipping control, which can expand the angle of the welding robot 50 and ensure the welding accuracy of the welding robot 50 to avoid welding dead angles; It should be noted that when welding the smoke hood: by providing a welding unit, after the smoke hood is spliced, only the second motor needs to be started, and the ring internal gear 47 is driven to engage and rotate through the second gear 48, so that the welding arm 49 and the welding robot 50 thereon move in a circle, and the welding robot 50 is controlled to move to the splicing joints of each side plate of the smoke hood for welding construction, optimizing the construction process, enabling continuous welding treatment of each splicing joint of the smoke hood, improving the welding efficiency, and facilitating production.

[0027] Embodiment 3: Based on the adjustment unit provided in Embodiment 1, this embodiment provides a further technical solution for the adjustment unit.

[0028] As Figure 11 、 Figure 12 and Figure 13 shown, the first adjusting member includes: A gear ring 12, rotatably sleeved on the bottom of the central column 2. A first motor is installed on one side of the central column 2 through a bracket, and a first gear 13 meshing with the gear ring 12 is installed at the output end of the first motor; A jacking sleeve 14, arranged on one side of the top of the gear ring 12. A jacking arm 15 is slidably installed in the jacking sleeve 14, and a guiding roller 16 is rotatably installed on the side of the jacking arm 15 facing the central column 2; A guiding track 17 is opened on the side wall of the central column 2. The guiding track 17 is composed of an arc-shaped lifting groove 171 and a semi-circular groove 172. The arc-shaped lifting groove 171 is opened on the central column 2, and the arc-shaped lifting groove 171 is spirally opened on the central column 2 along an arc, and the starting point to the ending point of the arc-shaped lifting groove 171 gradually rises on the central column 2. The semi-circular groove 172 is opened on the central column 2 and communicates with the arc-shaped lifting groove 171, and the guiding roller 16 is correspondingly slidably clamped into the guiding track 17, and the movement control of the guiding roller 16 is completed through the arc-shaped lifting groove 171 and the semi-circular groove 172; As Figure 14 and Figure 15 shown, the first adjusting member further includes: An annular temporary storage cavity 18, arranged on the central column 2, and the bottom is open. A quantitative medium is injected into the annular temporary storage cavity 18. The medium is specifically one of liquid and gas. A pressing ring 19 is slidably and sealedly installed in the annular temporary storage cavity 18. An annular track 20 is arranged at the bottom of the pressing ring 19, and the top of the jacking arm 15 is correspondingly slidably clamped into the annular track 20; A plurality of limiting rods 21 are arranged in a circular array on the pressing ring 19. Each limiting rod 21 slides through the annular temporary storage cavity 18, and a second spring is sleeved outside each limiting rod 21. Each second spring is correspondingly arranged between the annular temporary storage cavity 18 and the pressing ring 19; A plurality of conveying pipes 22 are arranged in a circular array and communicated with the top of the annular temporary storage cavity 18. The plurality of conveying pipes 22 are respectively communicated with the extrusion cavities 10 of the plurality of fixing members through pipelines; It should be noted that when clamping and controlling each side plate of the smoke hood: by providing a first adjusting member, starting the first motor, driving the gear ring 12 to rotate via the first gear 13, and jointly controlling the lifting sleeve 14 to rotate accordingly. Since the lifting arm 15 is restricted in the guiding track 17 by the guiding roller 16, during the rotation of the gear ring 12, the guiding roller 16 gradually rises under the guidance of the arc-shaped lifting groove 171, so that the lifting arm 15 gradually rises in the lifting sleeve 14. During the rising process of the lifting arm 15, the extrusion ring 19 is pushed to rise in the annular temporary storage cavity 18, and the medium in the annular temporary storage cavity 18 is respectively sent into the extrusion cavities 10 of the respective fixing members through pipelines, prompting the push arm 11 to extend against the first spring, enabling the sliding seat 9 to move in the concave clamping seat 7, and stably clamping and fixing the side plate of the smoke hood through the sliding seat 9 and the concave clamping seat 7, preventing the side plate of the smoke hood from moving, facilitating subsequent synchronous splicing operations. At the same time, by providing an annular track 20, the lifting arm 15 can follow the movement of the gear ring 12 to complete follow-up movement, avoiding movement interference; In the embodiment of the present invention, the second adjusting member includes: A first ring 23 is concentrically arranged at the bottom of the central column 2. Two moving areas 24 are opened on the first ring 23. A sliding member 25 is slidably engaged in each moving area 24. A third spring 26 is provided between each moving area 24 and the sliding member 25; A second ring 27 is concentrically arranged above the first ring 23 and is detachably fixedly connected to the two sliding members 25. A contact block 28 is installed on one side of the second ring 27. A contact arm 29 is installed on one side of the lifting sleeve 14 of the first adjusting member. Triggering and pushing are completed through the contact between the contact arm 29 and the contact block 28. When the guiding roller 16 moves to the semi-circular groove 172, the contact arm 29 contacts the contact block 28. Under normal conditions, the contact block 28 and the contact arm 29 are separated; A third ring 30 is concentrically arranged above the second ring 27 through a bracket. A plurality of arc-shaped extrusion platforms 31 are arranged in a circular array on the inner wall of the third ring 30. Each arc-shaped extrusion platform 31 contacts and controls the pushing column 5 of each limiting member respectively. The side surface of each arc-shaped extrusion platform 31 is inclined for transition. Specifically, the distance between the starting position and the ending position of the arc-shaped extrusion platform 31 and the central column 2 gradually increases. The movement control of the limiting member is completed through the trajectory line formed by the arc-shaped extrusion platform 31; It should be noted that when the side plates of each hood are synchronously gathered and spliced: by providing a second adjusting member, when the toothed ring 12 rotates, when the guiding roller 16 transitions from the arc-shaped lifting groove 171 to the semi-circular groove 172, at this time, the guiding roller 16 and the lifting arm 15 no longer rise, and thus no longer control the extrusion ring 19 to rise. At this time, the guiding roller 16 moves in the semi-circular groove 172. At this time, the contact arm 29 on one side of the lifting sleeve 14 swings accordingly. Through the contact and push between the contact arm 29 and the contact block 28, the second ring 27 and the third ring 30 are synchronously driven to rotate. By providing a plurality of arc-shaped extrusion platforms 31 on the third ring 30, when the third ring 30 rotates, the arc-shaped extrusion platforms 31 contact and extrude the push column 5, so that the push column 5 and the telescopic arm 4 move in the telescopic sleeve 3, and the side plates of each hood are synchronously gathered and spliced into a whole, which is beneficial to subsequent welding. At the same time, since the guiding member is connected to the telescopic sleeve 3, when the fixing member and the hood side plate gather and move, the guiding member is gradually separated from the hood side plate. Such a design makes the relative position of the hood side plate stable in the early stage of splicing and gradually separates in the splicing path, which is beneficial to the combined splicing of each hood side plate, improves the welding efficiency. Subsequently, the first motor is reset, and controlling the toothed ring 12 to reset can complete the reset of the first adjusting member and the second adjusting member. At the same time, through the design of the moving area 24 and the sliding member 25, it is beneficial to the reset of the third ring 30 and can be reused; As Figure 9 and Figure 10 shown, in the embodiment of the present invention, the top cover unit includes: A lifting area 32 is opened at the top of the central column 2. A lifting column 33 is slidably inserted in the lifting area 32, and an electric push rod 34 connected to the bottom of the lifting column 33 is arranged in the lifting area 32; A limiting ring 35 is arranged at the top of the lifting column 33, and a limiting ring 36 protrudes concentrically from the top of the limiting ring 35; A limiting bladder belt 37 is sleeved outside the limiting ring 36, and the sizes of the limiting ring 35 and the limiting ring 36 on the top cover unit are adaptively adjusted according to the size of the hood air outlet; An annular area 38 is opened at the top of the limiting ring 35. A contact ring 39 is slidably and sealingly installed in the annular area 38. A quantitative medium is injected into the annular area 38. The medium is specifically one of liquid and gas. And the annular area 38 and the limiting bladder belt 37 are communicated through a pipeline. A plurality of sliding rods 40 are arranged in a circular array at the bottom of the contact ring 39. Each sliding rod 40 slides through the limiting ring 35, and a fourth spring is sleeved outside each sliding rod 40. The contact ring 39 is controlled to protrude from the limiting ring 35 through the fourth spring; It should be noted that when splicing the top plate of the smoke hood: by providing a top cover unit, first place the top plate of the smoke hood on the limiting ring 35, and extend through the limiting ring 36 to the air outlet position of the top plate of the smoke hood to complete the preliminary limitation. Then, the top plate of the smoke hood acts on the contact ring 39 with its own weight, controls the contact ring 39 to move downward in the annular area 38, and pushes the medium in the annular area 38 into the limiting bladder belt 37 to make it expand, so as to complete the self-adaptive expansion and fixation of the top plate of the smoke hood. Subsequently, only need to control the electric push rod 34 to make the lifting column 33 move downward in the lifting area 32 to complete the splicing of the top plate of the smoke hood.

[0029] Embodiment 4: A forming and welding method for the oil mesh smoke hood of an oil fume machine. The welding method specifically includes the following steps: Step 1: Assemble multiple smoke hood side plates to multiple splicing units correspondingly, and assemble the top plate of the smoke hood to the top cover unit; Step 2: Complete the preliminary positioning operation of the smoke hood side plates through the guiding member and the limiting member; Step 3: Under the control of the adjusting unit No. 1 adjusting member, make the limiting member act to complete the clamping and limiting of the smoke hood side plates; Step 4: Cooperatively control multiple splicing units to approach and gather together through the adjusting unit No. 2 adjusting member to splice the smoke hood into a whole, optimizing the construction process; Step 5: Complete the synchronous splicing and positioning of the top plate of the smoke hood under the control of the top cover unit, and then start the welding unit to perform welding construction on the joints of the spliced smoke hood.

[0030] The present invention provides a forming and welding device and a welding method for the oil mesh smoke hood of an oil fume machine. The specific working principle is as follows: First, transfer the formed smoke hood side plates and the top plate of the smoke hood to the vicinity of the welding base 1. Subsequently, assemble multiple smoke hood side plates to multiple splicing units correspondingly, and assemble the top plate of the smoke hood to the top cover unit. Due to the design of the guiding members on each splicing unit, complete the preliminary positioning operation of the smoke hood side plates through the guiding member and the limiting member. Immediately, under the control of the adjusting unit No. 1 adjusting member, make the limiting member act to complete the clamping and limiting of the smoke hood side plates. At the same time, after the end of the control process of the No. 1 adjusting member, synchronously link and control the No. 2 adjusting member. Through the cooperative control of the No. 2 adjusting member, make multiple splicing units approach and gather together to splice the smoke hood into a whole, optimizing the construction process, without the need for workers to repeatedly debug and assemble. At the same time, complete the synchronous splicing and positioning of the top plate of the smoke hood under the control of the top cover unit. Then start the welding unit to weld the joints of the spliced smoke hood. Under the control of the adjusting unit, this welding device can synchronously complete the clamping and positioning and synchronous splicing operations of each smoke hood side plate, improving the overall production efficiency, ensuring the consistency of welding, avoiding problems that the seams are inconsistent during repeated debugging and splicing, affecting the welding quality, synchronously improving the overall welding quality, ensuring the quality of the smoke hood, and increasing the qualified rate of the smoke hood welding.

[0031] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0032] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. An oil fume machine oil net and smoke hood forming and welding device, comprising a welding base (1), characterized in that, Further included are: A central column (2), vertically arranged at the center of the welding base (1). A plurality of splicing units are arranged in a circular array around the central column (2). Each splicing unit includes a restricting member and a guiding member. The restricting member is used to complete the restriction of the fume hood, and the guiding member is used to complete the positioning of the initial position of the fume hood; A top cover unit, arranged at the top of the central column (2) and cooperating with the plurality of splicing units to complete the combined splicing of the fume hood; An adjusting unit, arranged on the welding base (1) for continuous control operations of the plurality of splicing units. The adjusting unit includes a first adjusting member and a second adjusting member. The first adjusting member is used to synchronously control a plurality of restricting members to complete the clamping action, and the second adjusting member is used to control a plurality of restricting members to complete the synchronous gathering and splicing combination operation. The intermittent control of the plurality of splicing units is completed through the cooperation of the first adjusting member and the second adjusting member; A welding unit, arranged on the welding base (1) to complete the circumferential movement welding operation.

2. The oil fume machine oil mesh smoke hood forming and welding device according to claim 1, characterized in that: Each restricting member includes: A telescopic sleeve (3), arranged on the side wall of the central column (2). A telescopic arm (4) is slidably engaged inside the telescopic sleeve (3). A pushing column (5) is rotatably installed on one side of the bottom of the telescopic arm (4) close to the central column (2); A restricting spring (6), arranged between the telescopic arm (4) and the telescopic sleeve (3), and the telescopic arm (4) is controlled to reset inside the telescopic sleeve (3) through the restricting spring (6); A fixing member, arranged at the front end of the telescopic arm (4) for the fixing operation of the fume hood.

3. The oil fume machine oil mesh and smoke hood forming and welding device according to claim 2, wherein: This fixing member includes: A concave clamping seat (7), arranged at the front end of the telescopic arm (4). A plurality of first rollers are rotatably arranged in a rectangular shape on the inner side of the concave clamping seat (7). A profiling support (8) is detachably and fixedly installed on the concave clamping seat (7); A sliding seat (9), slidably engaged and arranged on one side inside the concave clamping seat (7). A plurality of second rollers are rotatably arranged in a rectangular shape on the inner side of the sliding seat (9); An extrusion cavity (10), arranged on one side above the concave clamping seat (7). A push arm (11) connected to the sliding seat (9) is slidably and sealingly installed inside the extrusion cavity (10). A first spring is arranged between the push arm (11) and the extrusion cavity (10).

4. A welding device for forming an oil mesh smoke hood of an oil fume machine according to claim 1, characterized in that: This first adjusting member includes: A gear ring (12), rotatably sleeved on the bottom of the central column (2). A first motor is installed on one side of the central column (2) through a bracket. A first gear (13) meshing with the gear ring (12) is installed at the output end of the first motor; A jacking sleeve (14), arranged on one side above the gear ring (12). A jacking arm (15) is slidably installed inside the jacking sleeve (14). A guiding roller (16) is rotatably installed on the side of the jacking arm (15) facing the central column (2); The guiding track (17) is opened on the side wall of the central column (2). The guiding track (17) is composed of an arc-shaped lifting groove (171) and a semi-circular groove (172). The arc-shaped lifting groove (171) is opened on the central column (2), and the semi-circular groove (172) is opened on the central column (2) and communicates with the arc-shaped lifting groove (171). And the guiding roller (16) is correspondingly slidably engaged into the guiding track (17), and the movement control of the guiding roller (16) is completed through the arc-shaped lifting groove (171) and the semi-circular groove (172).

5. A welding device for forming an oil net and smoke hood of an oil fume machine according to claim 4, characterized in that: The first adjusting member further includes: The annular temporary storage cavity (18) is arranged on the central column (2). An extrusion ring (19) is slidably and sealingly installed in the annular temporary storage cavity (18). An annular track (20) is arranged at the bottom of the extrusion ring (19), and the top of the jacking arm (15) is correspondingly slidably engaged into the annular track (20); A plurality of limiting rods (21) are arranged in a circular array on the extrusion ring (19). Each limiting rod (21) slides through the annular temporary storage cavity (18). A second spring is sleeved outside each limiting rod (21), and each second spring is correspondingly arranged between the annular temporary storage cavity (18) and the extrusion ring (19); A plurality of conveying pipes (22) are arranged in a circular array and communicated with the top of the annular temporary storage cavity (18). The plurality of conveying pipes (22) are respectively communicated with a plurality of fixing members through pipelines.

6. The oil fume machine oil mesh and smoke hood forming and welding device according to claim 5, characterized in that: The second adjusting member includes: The first ring (23) is concentrically arranged at the bottom of the central column (2). Two moving areas (24) are opened on the first ring (23). A sliding member (25) is slidably engaged in each moving area (24). A third spring (26) is arranged between each moving area (24) and the sliding member (25); The second ring (27) is concentrically arranged above the first ring (23) and is detachably fixedly connected to the two sliding members (25). A contact block (28) is installed on one side of the second ring (27), and a contact arm (29) is installed on one side of the jacking sleeve (14) of the first adjusting member; The third ring (30) is concentrically arranged above the second ring (27) through a bracket. A plurality of arc-shaped extrusion platforms (31) are arranged in a circular array on the inner wall of the third ring (30). Each arc-shaped extrusion platform (31) is respectively in contact with a plurality of limiting members to complete the control, and the movement control of the limiting members is completed through the trajectory line formed by the arc-shaped extrusion platforms (31).

7. A welding device for forming an oil mesh and smoke hood of an oil fume machine according to claim 1, characterized in that: The top cover unit includes: The lifting area (32) is opened at the top of the central column (2). A lifting column (33) is slidably penetrated in the lifting area (32). An electric push rod (34) connected to the bottom of the lifting column (33) is arranged in the lifting area (32); The limiting ring (35) is arranged at the top of the lifting column (33). A limiting ring (36) protrudes concentrically from the top of the limiting ring (35); The limiting bladder belt (37) is sleeved outside the limiting ring (36); The annular area (38) is opened at the top of the limiting ring (35). A contact ring (39) is slidably and sealingly installed in the annular area (38), and the annular area (38) communicates with the limiting bladder belt (37) through a pipeline.

8. The oil fume machine oil mesh and fume hood forming and welding device according to claim 1, characterized in that: Each guiding member includes: An extension arm (41) is arranged on the limiting member. Two moving frames (42) are symmetrically arranged at both ends of the extension arm (41). A lead screw (43) is rotatably installed in each moving frame (42). A lead screw nut (44) is slidably engaged in each moving frame (42), and the lead screw nut (44) is correspondingly sleeved outside the lead screw (43). A clamping arm is installed on each lead screw nut (44), and a positioning member (45) is arranged at the tail of each clamping arm. The preliminary positioning of the smoke hood is completed through the two positioning members (45). A synchronizing shaft (46) is rotatably arranged between the two moving frames (42) and is in transmission connection with the two lead screws (43).

9. The oil fume machine oil mesh and smoke hood forming and welding device according to claim 1, wherein: The welding unit includes: An annular internal gear ring (47) is rotatably arranged on the welding base (1). A second motor is hidden on the welding base (1), and a second gear (48) engaged with the annular internal gear ring (47) is installed at the output end of the second motor. A welding arm (49) is arranged on one side of the annular internal gear ring (47). A circular ring track slidably engaged with the welding arm (49) is arranged on the welding base (1), and a welding robot (50) is arranged at the tail of the welding arm (49).

10. A method for forming and welding the oil mesh smoke hood of an oil fume machine, which uses an oil mesh smoke hood forming and welding device according to any one of claims 1-9, characterized in that, The welding method specifically includes the following steps: Step 1: Assemble multiple smoke hood side plates to multiple splicing units correspondingly, and assemble the smoke hood top plate to the top cover unit. Step 2: Complete the preliminary positioning operation of the smoke hood side plates through the guiding member and the limiting member. Step 3: Under the control of the adjusting unit's first adjusting member, make the limiting member act to clamp and limit the smoke hood side plates. Step 4: Coordinate and control multiple splicing units to move closer to each other to assemble the smoke hood into a whole through the adjusting unit's second adjusting member, optimizing the construction process. Step 5: Complete the synchronous splicing and positioning of the smoke hood top plate under the control of the top cover unit, and then start the welding unit to perform welding construction on the joints of the assembled smoke hood.

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