A range hood oil screen smoke cover forming and welding device and a welding method

Abstract

The application discloses a range hood oil screen smoke cover forming welding device and a welding method, and particularly relates to the technical field of welding. The range hood oil screen smoke cover forming welding device comprises a welding base, further comprises a center stand which is vertically arranged at the center of the welding base, and a plurality of splicing units which are arranged in a circular array around the center stand. Under the control of the adjusting unit No. 1 adjusting part, the limiting part acts to clamp and position the smoke cover side plate, and synchronously controls the No. 2 adjusting part. The No. 2 adjusting part cooperatively controls the plurality of splicing units to be close to each other to splice the smoke cover into a whole. The construction process is optimized, and the staff need not repeatedly debug and assemble. Under the control of the adjusting unit, the welding device can synchronously clamp and position each smoke cover side plate and synchronously splice, improves the overall production efficiency, ensures the consistency of welding, and synchronously improves the overall welding quality.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of welding, in particular to an oil fume extractor oil screen cover forming and welding device and a welding method. BACKGROUND

[0002] The oil screen cover is a kind of oil fume extractor commonly used in the kitchen. The oil screen cover directly discharges the oil fume generated by the stove in the kitchen to the outdoor through the air extractor. It is a simple, economical and common oil fume extractor in the current kitchen configuration. However, there are various types of oil screen covers, which can be freely designed according to different working environments. However, most oil screen covers are composed of a top cover and multiple side plates, which are combined and welded together. Therefore, a welding device is needed to complete the welding and forming of the oil screen cover during production.

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

[0004] Currently, laser welding devices are used to complete the welding of oil screen covers. For example, the above-mentioned laser welding device also uses a laser welding head for welding and forming. However, the welding device currently used in welding mostly uses a clamping mechanism to clamp and position each part of the cover separately. After a single welding is completed, the subsequent combined welding of parts can be carried out. This makes the overall welding process complicated and cannot simultaneously integrate and position the parts of the cover, increasing the workload of the workers who need to repeatedly adjust the parts. This also leads to a decrease in welding efficiency and easily interferes with the quality of the welding of the cover during repeated adjustments, resulting in inconsistent welding and affecting the service life of the cover. SUMMARY

[0005] The present application aims to provide an oil fume extractor oil screen cover forming and welding device and a welding method to solve the above-mentioned technical problems.

[0006] To solve the above-mentioned technical problems, the present application is achieved by the following technical solutions.

[0007] The present application is an oil fume extractor oil screen cover forming and welding device, which comprises a welding base and further comprises:

[0008] A central column is vertically arranged at the center of the welding base, and a plurality of splicing units are arranged in a circular array around the central column, each splicing unit comprising a limiting member and a guide member, the limiting member being used to complete the limiting of the smoke hood, and the guide member being used to complete the positioning of the initial position of the smoke hood;

[0009] A 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 smoke hood;

[0010] An adjusting unit is arranged on the welding base for continuous control operation of the plurality of splicing units, the adjusting unit comprising a first adjusting member and a second adjusting member, the first adjusting member being used to synchronously control the plurality of limiting members to complete the clamping action, and the second adjusting member being used to control the plurality of limiting members to complete the synchronous gathering and splicing operation, the intermittent control of the plurality of splicing units being completed by the first adjusting member and the second adjusting member in cooperation;

[0011] A welding unit is arranged on the welding base to complete the movement welding operation in the circumferential direction.

[0012] Further, each limiting member comprises:

[0013] A telescopic sleeve is arranged on the side wall of the central column, a telescopic arm is slidingly clamped in the telescopic sleeve, and a push column is rotatably installed at the bottom of the telescopic arm close to one side of the central column;

[0014] A limiting spring is arranged between the telescopic arm and the telescopic sleeve, and the telescopic arm is controlled to reset in the telescopic sleeve by the limiting spring;

[0015] A fixing member is arranged at the front end of the telescopic arm for the fixing operation of the smoke hood.

[0016] Further, the fixing member comprises:

[0017] A concave clamp seat is arranged at the front end of the telescopic arm, a plurality of first rollers are rotatably arranged in a rectangular shape on the inner side of the concave clamp seat, and a profiled support frame is detachably and fixedly installed on the concave clamp seat;

[0018] A sliding seat is slidingly clamped on one side in the concave clamp seat, and a plurality of second rollers are rotatably arranged in a rectangular shape on the inner side of the sliding seat;

[0019] An extrusion cavity is arranged on one side of the concave clamp seat, a push arm connected with the sliding seat is slidingly and sealingly installed in the extrusion cavity, and a first spring is arranged between the push arm and the extrusion cavity.

[0020] Further, the first adjusting member comprises:

[0021] A gear ring is rotatably sleeved at the bottom of the central column, a first motor is installed on one side of the central column through a support, and a first gear meshing with the gear ring is installed at the output end of the first motor;

[0022] The jacking sleeve is arranged on one side of the top of the gear ring, a jacking arm is slidingly arranged in the jacking sleeve, and a guide roller is rotatably arranged on one side of the jacking arm towards the center column.

[0023] The guide rail is arranged on the side wall of the center column, the guide rail is composed of an arc-shaped lifting groove and a semi-annular groove, the arc-shaped lifting groove is arranged on the center column, the semi-annular groove is arranged on the center column and communicates with the arc-shaped lifting groove, the guide roller is slidingly and clamped into the guide rail, and the movement of the guide roller is controlled through the arc-shaped lifting groove and the semi-annular groove.

[0024] Further, the first adjusting member further comprises:

[0025] The annular temporary storage cavity is arranged on the center column, the extrusion ring is slidingly and sealingly arranged in the annular temporary storage cavity, the annular track is arranged at the bottom of the extrusion ring, and the top of the jacking arm is slidingly and clamped into the annular track.

[0026] A plurality of limiting rods are arranged in a circular array on the extrusion ring, each limiting rod slidingly passes through the annular temporary storage cavity, each limiting rod is sleeved with a second spring, and each second spring is arranged between the annular temporary storage cavity and the extrusion ring.

[0027] A plurality of conveying pipes are arranged in a circular array on the top of the annular temporary storage cavity and are in communication with the plurality of fixing members through pipelines.

[0028] Further, the second adjusting member comprises:

[0029] A first ring is concentrically arranged at the bottom of the center column, two moving areas are arranged on the first ring, a sliding member is slidingly and clamped in each moving area, and a third spring is arranged between each moving area and the sliding member.

[0030] A second ring is concentrically arranged above the first ring and is detachably fixedly connected with the two sliding members, a contact block is arranged on one side of the second ring, and a contact arm is arranged on one side of the jacking sleeve of the first adjusting member.

[0031] A third ring is concentrically arranged above the second ring through a support, a plurality of arc-shaped extrusion tables are arranged in a circular array on the inner wall of the third ring, each arc-shaped extrusion table is in contact with a plurality of limiting members to complete control, and the movement of the limiting members is controlled through a track line formed by the arc-shaped extrusion tables.

[0032] Further, the top cover unit comprises:

[0033] A lifting area is arranged at the top of the center column, a lifting column is slidingly arranged in the lifting area, and an electric push rod connected with the bottom of the lifting column is arranged in the lifting area.

[0034] A limiting ring is arranged at the top of the lifting column, and a limiting ring is concentrically and protrudingly arranged at the top of the limiting ring.

[0035] The limiting capsule belt is sleeved outside the limiting ring;

[0036] The annular area is arranged on the top of the limiting ring, the contact ring is slidably arranged in the annular area, and the annular area and the limiting capsule belt are communicated through the pipeline.

[0037] Further, each guide comprises:

[0038] The extension arm is arranged on the limiting member, two moving frames are symmetrically arranged at both ends of the extension arm, a lead screw is rotatably arranged in each moving frame, a lead screw nut is slidably clamped in each moving frame, the lead screw nut is sleeved outside the lead screw in a transmission mode, a clamping arm is arranged on each lead screw nut, and a positioning member is arranged at the tail of each clamping arm, so that the preliminary positioning of the smoke cover is completed through the two positioning members;

[0039] The synchronous shaft is rotatably arranged between the two moving frames and is in transmission connection with the two lead screws.

[0040] Further, the welding unit comprises:

[0041] The annular inner gear ring is rotatably arranged on the welding base, the No. 2 motor is arranged on the welding base in a hidden mode, and the No. 2 gear meshing with the annular inner gear ring is arranged on the output end of the No. 2 motor.

[0042] The welding arm is arranged on one side of the annular inner gear ring, and the circular track slidably clamped with the welding arm is arranged on the welding base, and the welding robot is arranged at the tail of the welding arm.

[0043] The oil fume machine oil screen smoke cover forming and welding method provided by the application also provides an oil fume machine oil screen smoke cover forming and welding method.

[0044] Step 1, a plurality of smoke cover side plates are assembled on a plurality of splicing units, and a smoke cover top plate is assembled on a top cover unit.

[0045] Step 2, the preliminary positioning operation of the smoke cover side plate is completed through the guide and the limiting member;

[0046] Step 3, under the control of the adjusting unit No. 1 adjusting member, the limiting member acts to complete the clamping and limiting of the smoke cover side plate;

[0047] Step 4, the adjusting unit No. 2 adjusting member cooperatively controls the plurality of splicing units to be close to each other to gather the smoke cover into a whole, and the construction process is optimized.

[0048] Step 5, the smoke cover top plate is completed synchronous splicing positioning through the control of the top cover unit, and then the welding unit is started to weld the connection parts of the spliced smoke cover.

[0049] Compared with the prior art, the present application has the following advantages:

[0050] The present application is provided with a splicing unit, first place each fume hood side plate on the concave clamp seat to complete the preliminary positioning, and at the same time, the contact with the fume hood side plate by the profiling support completes the inner support, thereby ensuring the stable state of the fume hood side plate and improving the support force. The two sides of the guide are in contact with the positioning member to complete the restriction, so that the fume hood side plate is placed on the concave clamp seat at a predetermined position, which is convenient for the construction personnel to freely adjust according to the construction requirements. The two positioning members are synchronously adjusted, which simplifies the adjustment steps and is convenient for operation.

[0051] The present application is provided with an adjusting unit, under the control of the first adjusting member of the adjusting unit, the limiting member acts to complete the clamping and positioning of the fume hood side plate. At the end of the control process of the first adjusting member, the second adjusting member is synchronously linked to control. The second adjusting member cooperates to control multiple splicing units to gather together to splice the fume hood into a whole, which optimizes the construction process, improves the overall production efficiency, ensures the consistency of welding, and synchronously improves the overall welding quality.

[0052] The present application is provided with a top cover unit. First, the fume hood top plate is placed on the limiting ring, and the air port position of the fume hood top plate is completed by the limiting ring extending to the fume hood top plate. Preliminary restriction is completed, and then the fume hood top plate is self-weighted to the contact ring, the contact ring is controlled to move down in the annular area, the medium in the annular area is pushed into the limiting capsule to make it expand, which can complete the self-adaptive expansion fixing of the fume hood top plate. Subsequently, only the electric push rod needs to be controlled, and the lifting column can be lowered in the lifting area to complete the splicing of the fume hood top plate.

[0053] Of course, any product implementing the present application does not necessarily need to achieve all the advantages described above. BRIEF DESCRIPTION OF DRAWINGS

[0054] Figure 1 It is the overall front view of the present application;

[0055] Figure 2 It is the installation schematic of the fume hood side plate on the splicing unit of the present application;

[0056] Figure 3 It is the distribution schematic of multiple splicing units of the present application;

[0057] Figure 4 It is the distribution schematic of the splicing unit and the top cover unit of the present application;

[0058] Figure 5 It is the schematic diagram of the welding unit of the present application;

[0059] Figure 6 It is the installation schematic of the guide in the splicing unit of the present application;

[0060] Figure 7 Distribution diagram of guide and profiling support frame of the present application;

[0061] Figure 8 Diagram of guide of the present application;

[0062] Figure 9 Diagram of installation of top cover unit of the present application on center column;

[0063] Figure 10 Diagram of top cover unit of the present application;

[0064] Figure 11 Diagram of installation of adjustment unit of the present application on center column;

[0065] Figure 12 Diagram of adjustment unit of the present application;

[0066] Figure 13 Diagram of No. 1 adjusting member of the present application;

[0067] Figure 14 Diagram of installation of guide rail of the present application on center column;

[0068] Figure 15 Diagram of installation of gear ring of the present application on center column.

[0069] In the figure: 1, welded base; 2, center column; 3, telescopic sleeve; 4, telescopic arm; 5, pushing column; 6, limiting spring; 7, concave clamping seat; 8, profiling support frame; 9, sliding seat; 10, extrusion cavity; 11, pushing arm; 12, gear ring; 13, No. 1 gear; 14, jacking sleeve; 15, jacking arm; 16, guide roller; 17, guide rail; 171, arc-shaped lifting groove; 172, semi-annular groove; 18, annular temporary storage cavity; 19, extrusion ring; 20, annular rail; 21, limiting rod; 22, conveying pipe; 23, No. 1 ring; 24, moving area; 25, sliding piece; 26, No. 3 spring; 27, No. 2 ring; 28, contact block; 29, contact arm; 30, No. 3 ring; 31, arc-shaped extrusion table; 32, lifting area; 33, lifting column; 34, electric push rod; 35, limiting ring; 36, limiting ring; 37, limiting capsule belt; 38, annular area; 39, contact ring; 40, sliding rod; 41, extension arm; 42, moving frame; 43, screw rod; 44, screw rod nut; 45, positioning member; 46, synchronous shaft; 47, annular inner gear ring; 48, No. 2 gear; 49, welding arm; 50, welding robot. DETAILED DESCRIPTION

[0070] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application.

[0071] In the description of the present application, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery" and the like indicate the orientation or positional relationship, only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, therefore cannot be understood as a limitation on the present application.

[0072] Embodiment one: the present application provides a technical solution: as shown in a kind of range hood oil screen smoke cover forming welding device, including welding base 1, still include: Figures 1 to 4

[0073] Center column 2, vertically arranged in the center of welding base 1, a plurality of splicing units are arranged in a circular array around center column 2, each splicing unit includes limiting member, guide, limiting member is used to complete the limitation of smoke cover, guide is used to complete the positioning of initial position of smoke cover;

[0074] Top cover unit, set in the top of center column 2 and a plurality of splicing units cooperate to complete the combined splicing of smoke cover;

[0075] Adjusting unit, set on welding base 1 for continuous control operation of a plurality of splicing units, adjusting unit includes No. 1 adjusting member, No. 2 adjusting member, No. 1 adjusting member is used for synchronous control a plurality of limiting members to complete clamping action, No. 2 adjusting member is used for controlling a plurality of limiting members to complete synchronous gathering splicing combination operation, intermittent control of a plurality of splicing units is completed by No. 1 adjusting member and No. 2 adjusting member;

[0076] Welding unit, set on welding base 1 to complete the movement welding operation in circumferential direction.

[0077] Among them, electric push rod 34, No. 1 motor, No. 2 motor and other electrical elements are connected with switch through wire, and the switch is electrically connected with controller, the specific structure of controller is not limited, absolute value encoder is installed on No. 1 motor and No. 2 motor, for accurate positioning of No. 1 motor and No. 2 motor.

[0078] Embodiment two: according to the splicing unit provided in embodiment one, the present embodiment provides further technical solutions of splicing unit.

[0079] Each limiting member includes:

[0080] Telescopic sleeve 3, set in the side wall of center column 2, telescopic arm 4 is slidingly engaged in telescopic sleeve 3, and the front end of telescopic arm 4 slides through telescopic sleeve 3, and push column 5 is rotatably installed on the side of center column 2 close to the bottom of telescopic arm 4;

[0081] ​Limiting spring 6 is arranged between telescopic arm 4 and telescopic sleeve 3, and telescopic arm 4 is reset in telescopic sleeve 3 through limiting spring 6;

[0082] Fixing part is arranged at the front end of telescopic arm 4 and is used for fixing operation of the smoke cover;

[0083] The fixing part comprises:

[0084] Concave clamping seat 7 is arranged at the front end of telescopic arm 4, a plurality of first rollers are arranged in the inside of concave clamping seat 7 in a rectangular rotating mode, and profiled support frame 8 is detachably and fixedly installed on concave clamping seat 7;

[0085] Sliding seat 9 is slidingly and clampingly arranged at one side in the inside of concave clamping seat 7, sliding groove matched with sliding seat 9 is formed on concave clamping seat 7, and a plurality of second rollers are arranged in the inside of sliding seat 9 in a rectangular rotating mode;

[0086] Extrusion cavity 10 is arranged at one side of concave clamping seat 7, push arm 11 connected with sliding seat 9 is slidingly and sealingly installed in extrusion cavity 10, and first spring is arranged between push arm 11 and extrusion cavity 10;

[0087] It is worth mentioning that when each smoke cover side plate is preliminarily positioned, the smoke cover side plate is placed on concave clamping seat 7 to complete preliminary positioning through the arranged splicing unit, and the inside support is completed by the contact between profiled support frame 8 and the smoke cover side plate, so that the stable state of the smoke cover side plate is ensured, the supporting force is improved, and when the smoke cover side plate is placed on concave clamping seat 7, the two sides thereof are in contact with positioning members 45 to complete limiting, so that the smoke cover side plate is placed on concave clamping seat 7 at a predetermined position, and the distance between the two positioning members 45 is controlled by operating synchronous shaft 46 to control two lead screws 43, so that the two positioning members 45 can be controlled to move close to each other or move away from each other under the limitation of moving frame 42, which is convenient for the construction personnel to freely adjust according to the construction demand, and the synchronous adjustment of the two positioning members 45 simplifies the adjustment steps and is convenient for operation;

[0088] As shown in Figure 6 , Figure 7 and Figure 8 , each guide member in the embodiment of the application comprises:

[0089] Extension arm 41 is arranged on telescopic sleeve 3 of limiting member, two moving frames 42 are symmetrically arranged at both ends of extension arm 41, lead screw 43 is rotatably installed in each moving frame 42, the screw thread directions of lead screws 43 on the two moving frames 42 are opposite, so that two lead screw nuts 44 can move close to each other or move away from each other, each moving frame 42 slidingly and clampingly has lead screw nut 44, lead screw nut 44 is correspondingly transmissionally arranged outside lead screw 43, each lead screw nut 44 has clamping arm, positioning member 45 is arranged at the tail of clamping arm, and preliminary positioning of the smoke cover is completed through two positioning members 45.

[0090] Synchronous shaft 46, rotationally arranged between the two moving frames 42, and in transmission connection with the two lead screws 43;

[0091] As shown in Figure 5 , the welding unit comprises:

[0092] Annular inner ring gear 47, rotationally arranged on the welding base 1, a No. 2 motor is hiddenly arranged on the welding base 1, and a No. 2 gear 48 meshing with the annular inner ring gear 47 is installed at the output end of the No. 2 motor;

[0093] Welding arm 49 is arranged on one side of the annular inner ring gear 47, and a circular track slidingly 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, and the welding of the smoke cover is completed through the welding robot 50, and the welding robot 50 is composed of a mechanical arm and a welding system, and the welding of the smoke cover is completed by the cooperation of the mechanical arm and the welding system. In order to improve the welding range, a three-axis electric adjusting table is added at the connection between the welding arm 49 and the welding robot 50, which improves the adjusting range of the welding robot 50, and at the same time, an electric rotating table can be installed on the three-axis electric adjusting table, which can control the welding robot 50 to perform overturning control, can expand the angle of the welding robot 50, and can ensure the welding precision of the welding robot 50, avoiding the occurrence of welding dead angle;

[0094] It is worth mentioning that: when welding the smoke cover: by providing a welding unit, after the smoke cover is spliced, only the No. 2 motor needs to be started, the annular inner ring gear 47 is driven to mesh transmission through the No. 2 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 position of each smoke cover side plate for welding construction, which optimizes the construction process, can continuously weld each splicing position of the smoke cover, improves the welding efficiency, and is convenient for production.

[0095] Embodiment three: according to the adjusting unit provided in embodiment one, the further technical scheme of the adjusting unit is provided.

[0096] As shown in Figure 11 , Figure 12 and Figure 13 , the No. 1 adjusting member comprises:

[0097] Gear ring 12, rotationally arranged at the bottom of the center column 2, a No. 1 motor is installed on one side of the center column 2 through a support, and a No. 1 gear 13 meshing with the gear ring 12 is installed at the output end of the No. 1 motor;

[0098] Jacking sleeve 14 is arranged on one side of the top of the gear ring 12, jacking arm 15 is slidingly installed in the jacking sleeve 14, and guide roller 16 is rotationally installed on one side of the jacking arm 15 towards the center column 2.

[0099] A guide rail 17 is arranged on the side wall of the center column 2, and the guide rail 17 is composed of an arc-shaped lifting groove 171 and a semi-ring-shaped groove 172. The arc-shaped lifting groove 171 is arranged on the center column 2 and winds along the arc-shaped plate on the center column 2. The starting point to the ending point of the arc-shaped lifting groove 171 gradually rises on the center column 2. The semi-ring-shaped groove 172 is arranged on the center column 2 and communicates with the arc-shaped lifting groove 171. The guide roller 16 is correspondingly slidingly engaged into the guide rail 17, and the movement of the guide roller 16 is controlled through the arc-shaped lifting groove 171 and the semi-ring-shaped groove 172.

[0100] As shown in Figure 14 and Figure 15 , the first adjusting member further comprises:

[0101] An annular temporary storage cavity 18 is arranged on the center column 2 and has an open bottom. A certain amount of medium is injected into the annular temporary storage cavity 18, and the medium is one of a liquid and a gas. An extrusion ring 19 is slidingly and sealingly arranged 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 slidingly engaged into the annular track 20.

[0102] A plurality of limiting rods 21 are arranged in a circular array on the extrusion ring 19. Each limiting rod 21 slidingly passes through the annular temporary storage cavity 18. Each limiting rod 21 is sleeved with a second spring. Each second spring is arranged between the annular temporary storage cavity 18 and the extrusion ring 19.

[0103] A plurality of conveying pipes 22 are arranged in a circular array on the top of the annular temporary storage cavity 18. The plurality of conveying pipes 22 respectively communicate with the extrusion cavities 10 of the plurality of fixing members through pipelines.

[0104] It is worth mentioning that: when clamping control is carried out on each fume hood side plate, a first adjusting part is arranged, a first motor is started, a gear 13 drives a gear ring 12 to rotate, and a jacking sleeve 14 rotates synchronously, because a jacking arm 15 is limited in a guide rail 17 through a guide roller 16, when the gear ring 12 rotates, the guide roller 16 gradually rises under the guidance of the arc-shaped lifting groove 171, so that the jacking arm 15 gradually rises in the jacking sleeve 14, in the process of rising of the jacking arm 15, the extrusion ring 19 rises in the annular temporary cavity 18, the medium in the annular temporary cavity 18 is sent into the extrusion cavity 10 of each fixing part through the pipeline, the push arm 11 is extended by overcoming the first spring, the sliding seat 9 moves in the concave clamping seat 7, the stable clamping and fixing of the fume hood side plate is completed through the sliding seat 9 and the concave clamping seat 7, the movement of the fume hood side plate is avoided, and the subsequent synchronous splicing operation is facilitated, and the annular track 20 is arranged, so that the jacking arm 15 can follow the movement of the gear ring 12 to complete follow-up, and movement interference is avoided.

[0105] In the embodiment of the application, the second adjusting part comprises:

[0106] A first ring 23 is concentrically arranged at the bottom of the center column 2, two movement areas 24 are formed in the first ring 23, a sliding part 25 is clamped in each movement area 24, and a third spring 26 is arranged between each movement area 24 and the sliding part 25.

[0107] A second ring 27 is concentrically arranged above the first ring 23 and is detachably connected with the two sliding parts 25, a contact block 28 is arranged on one side of the second ring 27, a contact arm 29 is arranged on one side of the jacking sleeve 14 of the first adjusting part, the contact arm 29 and the contact block 28 are contacted to trigger the pushing, when the guide roller 16 moves to the semi-annular groove 172, the contact arm 29 and the contact block 28 are contacted, and the contact block 28 and the contact arm 29 are designed to be separated in the normal state.

[0108] A third ring 30 is concentrically arranged above the second ring 27 through a support, a plurality of arc-shaped extrusion tables 31 are arranged in a circular array on the inner wall of the third ring 30, each arc-shaped extrusion table 31 is in contact with the pushing column 5 of the plurality of limiting parts to complete control, and the side surface of each arc-shaped extrusion table 31 is inclined, specifically, the distance between the starting position to the end position of the arc-shaped extrusion table 31 and the center column 2 gradually increases, and the track line formed by the arc-shaped extrusion table 31 completes the movement control of the limiting part.

[0109] It is worth mentioning that: when the side plates of each smoke hood are synchronously gathered and spliced, through the second adjusting part, when the guide roller 16 transitions from the arc-shaped lifting groove 171 to the semi-annular groove 172 during the rotation of the gear ring 12, the guide roller 16 and the jacking arm 15 no longer rise, and then the extrusion ring 19 no longer rises, at this time, the guide roller 16 moves in the semi-annular groove 172, at this time, the contact arm 29 on one side of the jacking sleeve 14 swings, and through the contact between the contact arm 29 and the contact block 28 and the pushing, it synchronously drives the second ring 27 and the third ring 30 to rotate, and through the multiple arc-shaped extrusion tables 31 arranged on the third ring 30, when the third ring 30 rotates, the arc-shaped extrusion tables 31 contact and extrude the pushing column 5, so that the pushing column 5 and the telescopic arm 4 move in the telescopic sleeve 3, and each smoke hood side plate is synchronously gathered and spliced into a whole, which is beneficial to subsequent welding, and since the guide is connected with the telescopic sleeve 3, the guide and the smoke hood side plate gradually separate when the fixing part and the smoke hood side plate gather and move, so that the relative position of the smoke hood side plate is kept stable in the early stage of splicing, and gradually separates in the splicing path, which is beneficial to the combination and splicing of each smoke hood side plate, improves the welding efficiency, and the subsequent first motor resets to control the gear ring 12 to reset, so that the first adjusting part and the second adjusting part can be reset, and through the design of the moving area 24 and the sliding part 25, the third ring 30 can be reset and reused;

[0110] As shown in Figure 9 and Figure 10 shown, in the embodiment of the application, the top cover unit comprises:

[0111] The lifting area 32 is provided at the top of the center column 2, and the lifting column 33 is slidably arranged in the lifting area 32. The electric push rod 34 is arranged in the lifting area 32 and connected to the bottom of the lifting column 33.

[0112] The limiting ring 35 is arranged at the top of the lifting column 33, and the limiting ring 36 is arranged in a concentric manner at the top of the limiting ring 35.

[0113] The limiting capsule belt 37 is arranged outside the limiting ring 36, and the size of the limiting ring 35 and the limiting ring 36 of the top cover unit is adjusted according to the size of the smoke hood air port.

[0114] The annular area 38 is arranged at the top of the limiting ring 35, and the contact ring 39 is sealingly arranged in the annular area 38. A certain amount of medium is injected into the annular area 38, and the medium is one of a liquid and a gas. The annular area 38 and the limiting capsule belt 37 are connected through a pipeline. A plurality of slide rods 40 are arranged in a circular array at the bottom of the contact ring 39. Each slide rod 40 passes through the limiting ring 35, and a fourth spring is arranged outside each slide rod 40. The fourth spring controls the contact ring 39 to protrude from the limiting ring 35.

[0115] It is worth mentioning that: when the smoke hood top plate is spliced: by providing a top cover unit, first place the smoke hood top plate on the limiting ring 35, extend to the tuyere position of the smoke hood top plate through the limiting ring 36 to complete the preliminary limitation, then the smoke hood top plate will itself under the action of gravity on the contact ring 39, control the contact ring 39 to move down in the annular area 38, push the medium in the annular area 38 into the limiting capsule belt 37 to make it expand, which can complete the self-adaptive expansion fixing of the smoke hood top plate, and then only need to control the electric push rod 34, so that the lifting column 33 moves down in the lifting area 32, which can complete the splicing of the smoke hood top plate.

[0116] Example four: an oil fume machine oil screen smoke hood forming welding method, which specifically comprises the following steps:

[0117] Step 1, assemble a plurality of smoke hood side plates to a plurality of splicing units, and assemble a smoke hood top plate to a top cover unit;

[0118] Step 2, complete the preliminary positioning operation of the smoke hood side plate through the guide and the limiting piece;

[0119] Step 3, under the control of the adjusting unit No. 1 adjusting piece, make the limiting piece act to clamp and limit the smoke hood side plate;

[0120] Step 4, adjust unit No. 2 adjusting piece cooperates to control multiple splicing units to gather and close to each other to splice the smoke hood into a whole, which optimizes the construction process;

[0121] Step 5, complete the synchronous splicing positioning of the smoke hood top plate under the control of the top cover unit, and then start the welding unit to weld the connection of the spliced smoke hood.

[0122] The oil fume machine oil screen smoke cover forming and welding device and the welding method have the following specific working principle: first, the smoke cover side plates and the smoke cover top plate are transferred to the vicinity of the welding base 1, then the plurality of smoke cover side plates are assembled on the plurality of splicing units, and the smoke cover top plate is assembled on the top cover unit; due to the design of the guide on each splicing unit, the preliminary positioning operation of the smoke cover side plate is completed through the guide and the limiting piece; then, under the control of the adjusting unit No. 1 adjusting piece, the limiting piece is actuated to clamp and position the smoke cover side plate; after the control process of the No. 1 adjusting piece, the No. 2 adjusting piece is controlled synchronously, the plurality of splicing units are moved close to each other to splice the smoke cover into a whole through the cooperative control of the No. 2 adjusting piece, the construction process is optimized, the staff need not repeatedly debug and assemble, the smoke cover top plate is positioned synchronously under the control of the top cover unit, then the welding unit is started to weld the connection of the spliced smoke cover, the welding device can clamp and position the smoke cover side plate synchronously and splice synchronously under the control of the adjusting unit, the overall production efficiency is improved, the consistency of welding is ensured, the problem of inconsistent joints affecting the welding quality during repeated debugging and splicing is avoided, the overall welding quality is improved, the quality of the smoke cover is ensured, and the yield of the smoke cover welding is improved.

[0123] In the description of the present specification, the description referring to the terms "one embodiment", "an example", "a specific example" and the like means 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 application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0124] The above disclosed preferred embodiments of the present application are only used to help explain the present application. The preferred embodiments do not describe all the details, nor limit the application to the specific embodiments described. Obviously, according to the content of the present specification, many modifications and changes can be made. The present specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present application, so that those skilled in the art can well understand and utilize the present application. The present application is limited only by the claims and their full scope and equivalents.

Claims

1. A welding device for forming and welding a range hood mesh hood, comprising a welding base (1), characterized in that, Also includes: The central column (2) is vertically set at the center of the welding base (1). Multiple splicing units are arranged in a circular array around the central column (2). Each splicing unit includes a limiting component and a guiding component. The limiting component is used to limit the smoke hood, and the guiding component is used to position the smoke hood at its initial position. The top cover unit is set on the top of the central column (2) and works with multiple splicing units to complete the assembly of the smoke hood; An adjustment unit is set on the welding base (1) for continuous control operation of multiple splicing units. The adjustment unit includes a first adjustment component and a second adjustment component. The first adjustment component is used to synchronously control multiple limiting components to complete the clamping action. The second adjustment component is used to control multiple limiting components to complete the synchronous gathering and splicing combination operation. The first adjustment component and the second adjustment component work together to complete the intermittent control of multiple splicing units. The welding unit is set on the welding base (1) to complete the circumferential moving welding operation; Each limiting component includes: Telescopic sleeve (3) is set on the side wall of the central column (2). Telescopic arm (4) is slidably engaged in the telescopic sleeve (3). A push column (5) is rotatably installed on the bottom of the telescopic arm (4) near the central column (2). A limiting spring (6) is set between the telescopic arm (4) and the telescopic sleeve (3) to control the telescopic arm (4) to reset within the telescopic sleeve (3); A fixing component is installed at the front end of the telescopic arm (4) for fixing the smoke hood; The fastener includes: A concave clamp (7) is set at the front end of the telescopic arm (4). Multiple No. 1 rollers are arranged in a rectangular shape on the inner side of the concave clamp (7). A contour support (8) is detachably and fixedly installed on the concave clamp (7). The sliding seat (9) is slidably engaged on one side of the concave clamp (7), and multiple No. 2 rollers are rotatably arranged in a rectangular shape on the inner side of the sliding seat (9); The extrusion chamber (10) is located on one side of the concave clamp (7). A push arm (11) connected to the sliding seat (9) is slidably and sealed inside the extrusion chamber (10). A first spring is provided between the push arm (11) and the extrusion chamber (10). The No. 1 adjustment component includes: A gear ring (12) is rotatably mounted on the bottom of the central column (2). A No. 1 motor is installed on one side of the central column (2) via a bracket. A No. 1 gear (13) that meshes with the gear ring (12) is installed at the output end of the No. 1 motor. A lifting sleeve (14) is set on one side of the top of the gear ring (12). A lifting arm (15) is slidably installed inside the lifting sleeve (14). A guide roller (16) is rotatably installed on the side of the lifting arm (15) facing the central column (2). The guide rail (17) is located on the side wall of the central column (2). The guide rail (17) consists of an arc-shaped lifting groove (171) and a semi-circular groove (172). The arc-shaped lifting groove (171) is located on the central column (2), and the semi-circular groove (172) is located on the central column (2) and communicates with the arc-shaped lifting groove (171). The guide roller (16) is correspondingly slidably engaged in the guide rail (17). The movement control of the guide roller (16) is completed through the arc-shaped lifting groove (171) and the semi-circular groove (172). The No. 1 adjustment component also includes: An annular temporary storage cavity (18) is set on the central column (2). A compression ring (19) is slidably and sealed in the annular temporary storage cavity (18). An annular track (20) is set at the bottom of the compression ring (19), and the top of the lifting arm (15) is correspondingly slidably engaged in the annular track (20). Multiple 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). Each limiting rod (21) is fitted with a second spring. Each second spring is correspondingly arranged between the annular temporary storage cavity (18) and the extrusion ring (19). Multiple delivery pipes (22) are arranged in a circular array and connected at the top of the annular temporary storage cavity (18). The multiple delivery pipes (22) are interconnected with multiple fixing parts through pipes. The second adjusting component includes: Ring No. 1 (23) is concentrically set at the bottom of the central column (2). Two moving areas (24) are opened on Ring No. 1 (23). Each moving area (24) is slidably engaged with a slider (25). A No. 3 spring (26) is set between each moving area (24) and the slider (25). The second ring (27) is concentrically set above the first ring (23) and is detachably fixedly connected to the two sliding parts (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 lifting sleeve (14) of the first adjusting part. The third ring (30) is concentrically set above the second ring (27) by a bracket. Multiple arc-shaped extrusion tables (31) are arranged in a circular array on the inner wall of the third ring (30). Each arc-shaped extrusion table (31) contacts multiple limiting parts to complete the control. The movement control of the limiting parts is completed by the trajectory line formed by the arc-shaped extrusion table (31). During the process of the lifting arm (15) rising, 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 sent into the extrusion cavity (10) of each fixed part through the pipeline, causing the push arm (11) to overcome the first spring and extend, so that the sliding seat (9) moves in the concave clamp (7); The guide roller (16) moves within the semi-annular groove (172), and the contact arm (29) on one side of the lifting sleeve (14) swings accordingly, contacting and pushing the contact block (28).

2. The oil mesh fume hood forming and welding device according to claim 1, characterized in that: The top cover unit includes: The lifting area (32) is located at the top of the central column (2). A lifting column (33) is slidably installed in the lifting area (32). An electric push rod (34) connected to the bottom of the lifting column (33) is installed in the lifting area (32). A limiting ring (35) is provided on the top of the lifting column (33), and a limit ring (36) is provided concentrically protruding on the top of the limiting ring (35). The limiting sling (37) is fitted over the limiting ring (36); An annular region (38) is formed at the top of the limiting ring (35). A contact ring (39) is slidably sealed within the annular region (38), and the annular region (38) and the limiting bladder band (37) are interconnected by a pipe.

3. The oil mesh fume hood forming and welding device according to claim 1, characterized in that: Each bootloader includes: An extension arm (41) is mounted on a limiting member. Two movable frames (42) are symmetrically arranged at both ends of the extension arm (41). A lead screw (43) is rotatably installed in each movable frame (42). A lead screw nut (44) is slidably engaged in each movable frame (42). The lead screw nut (44) is correspondingly sleeved on the outside of the lead screw (43). A clamping arm is installed on each lead screw nut (44). A positioning member (45) is provided at the tail of each clamping arm. The initial positioning of the smoke hood is completed by the two positioning members (45). Synchronous shaft (46) is rotatably positioned between two movable frames (42) and is connected to two lead screws (43) for transmission.

4. The oil mesh fume hood forming and welding device according to claim 1, characterized in that: The welding unit includes: An annular internal gear ring (47) is rotatably mounted on a welding base (1). A second motor is hidden on the welding base (1), and a second gear (48) that meshes with the annular internal gear ring (47) is installed at the output end of the second motor. A welding arm (49) is set on one side of an annular internal gear ring (47), and an annular track that slides and engages with the welding arm (49) is set on the welding base (1). A welding robot (50) is set at the tail of the welding arm (49).

5. A method for forming and welding a range hood mesh hood, using a range hood mesh hood forming and welding device as described in any one of claims 1-4, characterized in that, The welding method specifically includes the following steps: Step 1: Assemble multiple side panels of the smoke hood onto multiple splicing units, and assemble the top panel of the smoke hood onto the top cover unit; Step 2: Complete the initial positioning of the side panel of the fume hood using guides and restrictors; Step 3: Under the control of the adjusting component of unit one, the limiting component is activated to clamp and limit the side panel of the smoke hood. Step 4: By adjusting the No. 2 adjustment component of the unit, multiple splicing units are brought closer together to form a whole, thus optimizing the construction process. Step 5: Under the control of the top cover unit, the top plate of the fume hood is synchronously spliced ​​and positioned. Then, the welding unit is started to weld the joints of the spliced ​​fume hood.

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