Welding device for metal furniture processing

Abstract

The invention discloses a welding device for metal furniture processing, which comprises a first conveying mechanism for conveying a stand column, a second conveying mechanism for conveying a connecting piece, and an upper welding device and a lower welding device for welding the joint of the stand column and the connecting piece, the first conveying mechanism is composed of an upper conveying line and a lower conveying line which are symmetrically distributed up and down, each of the upper conveying line and the lower conveying line comprises two side plates which are distributed in parallel, the two sets of second conveying mechanisms are symmetrically arranged relative to the first conveying mechanism, and mounting strips are connected with fixing seats through adjusting structures; and the fixed seat is used for placing a connecting piece. The connecting piece conveying device is provided with the first conveying mechanism and the second conveying mechanism at the same time, connecting pieces can be continuously conveyed, in this way, continuous operation can be achieved on the whole, and the operation efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of welding processing, and in particular to a welding device for processing metal furniture. Background Art

[0002] Metal furniture is widely used in homes, offices and public places because of its durability, modern appearance and features. This type of furniture usually uses metal pipes and plates as the main structure, and the overall frame is formed by welding metal columns and beams to achieve the necessary structural strength and stability. The welding process is a crucial link in the production of metal furniture. The welding quality directly affects the strength, durability and aesthetics of the finished product. Especially in mass production, welding efficiency and accuracy have become key issues that manufacturers are concerned about.

[0003] At present, the welding of metal furniture mainly relies on semi-automatic or automatic welding devices. These devices are usually suitable for small-scale production and are mainly used for welding single pieces or small batches of metal components. For example, patent CN118060683A discloses a metal furniture column welding device, which uses multiple brackets to fix the connectors and then uses a servo motor to drive the welding device for synchronous welding. This type of equipment can improve the welding efficiency of a single column to a certain extent, but its design and existing technology still have obvious deficiencies in practical applications, which are specifically reflected in the following aspects:

[0004] Lack of continuous production capacity and low production efficiency: Most existing equipment adopts a single-piece operation mode, that is, only one column can be welded at a time. After welding, the workpiece needs to be manually unloaded and the next workpiece needs to be reinstalled. This process leads to strong intermittent production, making it difficult to achieve continuous production and not suitable for high-efficiency, mass production needs. Especially on modern production lines, the demand for metal furniture is large, requiring welding equipment to have the ability of continuous automatic welding to meet the requirements of efficient production.

[0005] The operation process is cumbersome, time-consuming and labor-intensive: After welding, the operator of the existing equipment needs to manually remove the welded workpiece and then re-place the new component to be welded. This process is highly repetitive, time-consuming and labor-intensive, which not only increases the complexity and labor cost of manual operation, but also leads to low overall production efficiency. The limitations of this equipment operation process are particularly evident in high-frequency production scenarios and are not suitable for large-scale production needs.

[0006] Insufficient welding positioning accuracy affects the quality of finished products: Existing welding equipment usually uses a simple mechanical clamping method to fix the workpiece, but this type of fixing method has low positioning accuracy. Metal columns and connectors are prone to offset during welding, resulting in uneven welding or inaccurate angles, which in turn affects the structural strength and appearance of the finished product. In addition, the lack of multi-angle welding design during the welding process makes it difficult to meet the precise welding requirements of metal furniture parts with complex structures. Therefore, improving positioning accuracy and welding angle adaptability places higher requirements on welding equipment.

[0007] Unstable welding quality and complicated subsequent processing: Due to unstable positioning and limited welding process, the welding quality of existing equipment is easily affected by the external environment and the accuracy of the equipment itself, which may cause problems such as uneven welds and insufficient welding strength. This not only affects the structural performance of metal furniture, but also increases subsequent processing steps such as grinding and calibration, further reducing production efficiency and increasing production costs.

[0008] In summary, the current metal furniture welding equipment has deficiencies in continuous production capacity, ease of operation, positioning accuracy and welding quality, and it is difficult to meet the requirements of the modern metal furniture industry for large-scale, high-quality production. Summary of the invention

[0009] The present invention aims to provide an improved metal furniture welding device that can realize automatic transportation, precise positioning, and multi-angle welding of columns and connecting parts, so as to improve production efficiency, welding accuracy and product quality, so as to better adapt to large-scale production needs, simplify the operating process and improve the reliability and stability of welding operations, so as to solve the problems in the background technology.

[0010] To achieve the above-mentioned purpose, the present invention provides a welding device for metal furniture processing, including a first conveying mechanism for conveying columns, a second conveying mechanism for conveying connecting parts, and an upper welding device and a lower welding device for welding the joints between the columns and the connecting parts.

[0011] The first conveying mechanism is composed of an upper conveying line and a lower conveying line which are symmetrically distributed up and down.

[0012] The upper conveyor line and the lower conveyor line each include two parallel side plates and a conveying wheel located between the two side plates. There are a plurality of conveying wheels distributed at equal intervals. Both ends of the conveying wheel are movably connected to the side plate bearings. The bottoms of the two sides of the side plates on the upper conveyor line are bolted with limiting plates.

[0013] The second conveying mechanism is symmetrically arranged with two groups about the first conveying mechanism. The second conveying mechanism includes a driving wheel and a driven wheel. Two sprockets are fixed on the driving wheel and the driven wheel with a pin. The sprockets on the driving wheel and the driven wheel are both covered with meshing transmission chains.

[0014] A plurality of mounting bars are fixedly welded on the two transmission chains. The mounting bars are connected with a fixing seat through an adjusting structure, and the fixing seat is used for placing a connecting piece.

[0015] As a preferred technical solution:

[0016] For a welding device for metal furniture processing as described above, two upper welding devices and two lower welding devices are symmetrically arranged with respect to the first conveying mechanism. The two upper welding devices are distributed in a "V" shape, and the two lower welding devices are distributed in an inverted "V" shape. The upper welding device and the lower welding device are arranged one in front of the other.

[0017] Through the above technical solution, the distribution design of the upper welding device and the lower welding device makes the upper welding device and the lower welding device both arranged obliquely. This design enables the upper welding device and the lower welding device to better contact the joint of the column and the connecting piece, improving the welding quality.

[0018] For a welding device for metal furniture processing as described above, the upper welding device is bolted to one end of the upper fixing plate, and the other end of the upper fixing plate is bolted to the side plate on the upper conveying line.

[0019] The lower welding device is bolted to one end of the lower fixing plate, and the other end of the lower fixing plate is bolted to the side plate on the lower conveying line.

[0020] Through the above technical solution, the setting of the upper fixing plate and the lower fixing plate can fix the upper welding device on the upper conveying line and the lower welding device on the lower conveying line, so that the upper welding device and the lower welding device can maintain a fixed state, thereby ensuring the subsequent welding accuracy and quality.

[0021] For a welding device for metal furniture processing as described above, driving rollers connected by bearings penetrate through the two side plates on the upper conveying line and the lower conveying line, and meshing transmission gears are fixed by pinning at one end of the driving rollers on the upper conveying line and the lower conveying line.

[0022] The head and tail ends of the side plates on the upper conveying line and the side plates on the lower conveying line are welded and connected through a connecting plate. The connecting plate is in a "C" shape, and the bottom surface of the connecting plate is fixedly welded to the base through a metal rod.

[0023] Through the above technical solution, the setting of the connecting plate can dock the side plates on the upper conveying line and the lower conveying line, and the two groups of side plates can be kept in a fixed state through the metal rod, so that the column can be continuously and smoothly conveyed during the subsequent operation process.

[0024] When the column and the connecting piece are welded, the column will drive the connecting pieces on both sides thereof to pass through the connecting plate. The shape design of the connecting plate prevents the connecting plate from colliding with the connecting piece, and the structure is reasonable.

[0025] As described above, in a welding device for metal furniture processing, the conveying wheel between the two side plates and one end of the driving roller are connected by chain transmission, one end of the driving roller on the upper conveying line is connected by chain transmission to the output shaft of the driving motor, and the driving motor is fixed on the connecting plate at the head end of the side plate.

[0026] Through the above technical solution, a linkage structure is formed between the conveying wheel and the driving roller. When the driving roller rotates under the drive of the driving motor, multiple conveying wheels can rotate synchronously to complete the conveying operation of the column.

[0027] In the welding device for metal furniture processing as described above, the limit plate is in an inverted "L" shape, and a plurality of limit plates are evenly distributed on the side of the side plate on the upper conveyor line, and the vertical end side surfaces of the limit plates are in contact with the two sides of the column.

[0028] Through the above technical solution, the setting of the limiting plate allows the conveying wheel to limit the column when the conveying column moves, avoiding the column from shifting in the horizontal direction, thereby ensuring that the column can fit tightly with the connecting piece, which is beneficial to the subsequent welding effect.

[0029] In the welding device for metal furniture processing as described above, both ends of the driving wheel and the driven wheel are movably connected to the support plate bearings, and the bottom end of the support plate is vertically welded and fixed to the base.

[0030] The driving wheels and the driven wheels on the two second conveying mechanisms are connected by flanges.

[0031] Through the above technical solution, when it is necessary to weld connecting parts on both sides of the column, the driving wheel and the driven wheel can be connected through the flange, so that when the driving wheel and the driven wheel rotate, the two transmission chains can be driven to rotate synchronously. When it is only necessary to weld connecting parts on one side of the column, the two driving wheels and the driven wheels can be separated, so that only the driving wheel and the driven wheel on one side can rotate.

[0032] In this way, the two second conveying mechanisms can work together synchronously or separately.

[0033] A welding device for metal furniture processing as described above, wherein the adjusting structure includes a first lead screw and a first guide rod passing through the mounting strip. The top end of the first lead screw is movably connected to the bottom wall of the adjusting seat by a bearing, and the top end of the first guide rod is welded to the bottom wall of the adjusting seat. The top end of the adjusting seat is fitted with a movable plate. The adjusting seat is hollow, and the top end of the adjusting seat is open. A convex block extends vertically downward from the bottom surface of the movable plate, and the convex block extends into the adjusting seat. A second lead screw and a second guide rod passing through the convex block are arranged in the adjusting seat.

[0034] The first lead screw is threadedly connected to the mounting strip, and the second lead screw is threadedly connected to the convex block. Both ends of the second lead screw are connected to the side wall of the adjusting seat by bearings. The first guide rod is slidably connected to the mounting strip, and the second guide rod is slidably connected to the convex block. Both ends of the second guide rod are welded to the side wall of the adjusting seat. The first lead screw and the second lead screw are perpendicular to each other, and the first lead screw is vertical.

[0035] Through the above technical solution, the first lead screw can drive the movable plate to move in the vertical direction, and the second lead screw can drive the movable plate to move in the horizontal direction. Furthermore, the position of the fixed seat can be adjusted through the movable plate, so as to ensure that the fixed seat can be fitted to the designated position on the side of the column according to the design requirements.

[0036] A welding device for metal furniture processing as described above, wherein the top surface of the movable plate is fixedly bonded to the bottom surface of the fixed seat. The longitudinal section of the fixed seat is in a "U" shape, and the whole fixed seat is made of rubber material.

[0037] Through the above technical solution, the shape design of the fixed seat makes a "U"-shaped card slot formed on the surface of the fixed seat. By inserting the connecting piece into the card slot, the placement and fixation of the connecting piece can be completed. This method is simple to operate and convenient for continuous placement of the connecting piece.

[0038] Compared with the prior art, the present invention has at least the following beneficial effects:

[0039] (1) Realize continuous and efficient welding operation and improve production efficiency: Through the combined design of the first conveying mechanism and the second conveying mechanism, the present invention can continuously convey the metal column and the connecting piece at the same time. The column is conveyed by the upper and lower conveying lines, and the connecting piece is driven to move by the chain mechanism. This continuous conveying and welding design avoids the cumbersome operation of frequently disassembling and assembling the connecting piece in the traditional device, realizes the automation and high efficiency of the production process, and greatly improves the processing efficiency.

[0040] (2) Double welding structure to ensure welding quality and stability: The device is equipped with two sets of upper and lower welding devices, and is tilted forward and backward to ensure that the welding devices are in full contact with the mating surfaces of the column and the connector. The upper welding device performs the first welding on the upper side of the joint between the connector and the column. After the connector is fixed, the second welding is performed at the lower welding device. This double welding mechanism can ensure the firmness and welding quality of the joint, making the welding effect uniform and stable, which is suitable for metal furniture processing scenarios with high quality requirements.

[0041] (3) Automatic separation mechanism simplifies the operation process and improves safety: The fixing seat in the second conveying mechanism is made of elastic rubber material and is designed to be automatically separated. During the welding process, the fixing seat and the connecting piece remain in contact. When the welding is completed, the fixing seat automatically separates from the connecting piece through its own elastic deformation without manual operation. This design greatly simplifies the operation steps, reduces the need for human intervention, reduces the safety risks of operators, and improves the continuity and automation of the overall operation.

[0042] (4) Flexible adjustment mechanism to adapt to workpieces of various sizes: The fixed seat is equipped with an adjustable structure. Through the screw adjustment system in both vertical and horizontal directions, the position of the fixed seat can be flexibly adjusted according to the size of the connecting piece. This design ensures the applicability of the device under conditions of different workpiece sizes, so that the connecting piece always fits accurately with the column, ensures the accuracy of the welding position, and enhances the scope of application and versatility of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which

[0044] Figure 1 is a side view of the present invention;

[0045] Figure 2 A top view of the present invention;

[0046] Figure 3 It is a front view of the present invention;

[0047] Figure 4 It is a front view of the upper welding device and the lower welding device of the present invention;

[0048] Figure 5 A top view of the side plate and the driving roller of the present invention;

[0049] Figure 6 A three-dimensional diagram of the side panels and the connecting panels of the present invention;

[0050] Figure 7 It is a three-dimensional diagram of the adjustment seat and the movable plate of the present invention;

[0051] Figure 8 It is a schematic diagram of the separation of the connecting piece and the fixing seat of the present invention.

[0052] In the figure: 1. column; 2. connecting piece; 3. upper welding device; 4. lower welding device; 5. side plate; 6. conveying wheel; 7. driving roller; 8. transmission gear; 9. connecting plate; 10. driving motor; 11. limiting plate; 12. driving wheel; 13. driven wheel; 14. transmission chain; 15. mounting bar; 16. fixing seat; 17. first screw rod; 18. first guide rod; 19. adjusting seat; 20. second screw rod; 21. second guide rod; 22. movable plate; 23. bump; 24. base; 25. upper fixing plate; 26. lower fixing plate; 27. supporting plate. DETAILED DESCRIPTION

[0053] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0054] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0055] See also Figure 1-3 The present invention provides a technical solution: a welding device for metal furniture processing, comprising a first conveying mechanism for conveying a column 1, a second conveying mechanism for conveying a connecting piece 2, and an upper welding device 3 and a lower welding device 4 for welding the joint between the column 1 and the connecting piece 2.

[0056] The first conveying mechanism is composed of an upper conveying line and a lower conveying line which are symmetrically distributed up and down.

[0057] Both the upper conveyor line and the lower conveyor line include two parallel side panels 5, and a conveying wheel 6 located between the two side panels 5. There are multiple conveying wheels 6 distributed at equal intervals, and both ends of the conveying wheel 6 are movably connected to the bearings of the side panels 5. The bottom of the side panels 5 on the upper conveyor line are bolted with limiting plates 11, and the limiting plates 11 are inverted "L"-shaped structure. There are multiple limiting plates 11 distributed at equal intervals on the side surfaces of the side panels 5 on the upper conveyor line, and the vertical end sides of the limiting plates 11 are in contact with the two sides of the column 1.

[0058] There are two sets of the second conveying mechanism symmetrically arranged with respect to the first conveying mechanism. The second conveying mechanism includes a driving wheel 12 and a driven wheel 13. Two sprockets are fixed on both the driving wheel 12 and the driven wheel 13 by snap pins. The sprockets on the driving wheel 12 and the driven wheel 13 are both sleeved with meshing drive chains 14. Both ends of the driving wheel 12 and the driven wheel 13 are movably connected to the support plate 27 by bearings. The bottom end of the support plate 27 is perpendicularly welded and fixed to the base 24. The driving wheels 12 and the driven wheels 13 on the two second conveying mechanisms are flange-connected.

[0059] A plurality of mounting bars 15 are welded and fixed on the two drive chains 14. The mounting bars 15 are connected with fixing seats 16 through adjusting structures. The fixing seats 16 are used for placing the connecting pieces 2.

[0060] The longitudinal section of the fixing seat 16 is in a "U" shape, and the fixing seat 16 is made of rubber as a whole.

[0061] During operation, the column 1 can be sent between the upper conveying line and the lower conveying line. When both the top surface and the bottom surface of the column 1 are in contact with the conveying wheels 6, under the action of the conveying wheels 6, the column 1 can move linearly between the upper conveying line and the lower conveying line. During the movement, when the two side surfaces of the column 1 are in contact with the limiting pieces 11, this can ensure that the column 1 can move linearly and avoid deviation in the moving direction.

[0062] A motor is fixed to the support plate 27 by bolts. The output shaft of the motor is butted against the driving wheel 12. Thus, while conveying the column 1, the motor is powered on and runs. The motor drives the driving wheel 12 to rotate axially. The sprockets on the driving wheel 12 and the driven wheel 13 cooperate with each other, and then form a chain drive structure with the drive chain 14. The drive chain 14 can continuously rotate under the drive of the driving wheel 12 and the driven wheel 13. At this time, the connecting piece 2 can be placed into the "U"-shaped groove on the fixing seat 16.

[0063] When the drive chain 14 rotates, it can drive the mounting bars 15 thereon to rotate. In this way, the mounting bars 15 drive the connecting piece 2 to move through the fixing seats 16. When the connecting piece 2 and the column 1 move linearly together, at this time, the connecting piece 2 is in a fitting state with the column 1. When the fitting part of the connecting piece 2 and the column 1 passes through the upper welding device 3, the upper welding device 3 can weld the upper side of the fitting part.

[0064] As Figure 8 shown, after welding, the connecting piece 2 has been fixed to the column 1. The column 1 will continue to move linearly, while the drive chain 14 will drive the fixing seat 16 to rotate downward through the mounting bar 15. During the downward rotation of the fixing seat 16, it will gradually tilt from the horizontal state.

[0065] Since the fixing seat 16 is made of rubber elastic material, the connector 2 and the fixing seat 16 are plug-in fixed, and the connector 2 and the fixing seat 16 are not fixedly connected. The column 1 will apply a horizontal force to the connector 2, and as the inclination angle of the fixing seat 16 increases, the connector 2 gradually separates from the fixing seat 16 until it is completely separated from the fixing seat 16.

[0066] After the connector 2 is separated from the fixing seat 16 , it will continue to move linearly with the column 1 . At this time, the joint between the connector 2 and the column 1 passes through the lower welding device 4 , and the lower welding device 4 can weld the lower side of the joint.

[0067] A plurality of mounting bars 15 are arranged on the transmission chain 14 , so that a plurality of connectors 2 can be placed, which means that a plurality of connectors 2 can be welded on the column 1 .

[0068] The distance between two adjacent mounting strips 15 is also the welding distance of the connector 2. By placing the connector 2 on the fixing seat 16 with one mounting strip 15 between them, the welding distance of the connector 2 can be increased, thereby improving the application range of the device.

[0069] like Figure 1 and Figure 4 As shown, two upper welding devices 3 and two lower welding devices 4 are symmetrically arranged about the first conveying mechanism, the two upper welding devices 3 are distributed in a "V" shape, and the two lower welding devices 4 are distributed in an inverted "V" shape. The upper welding devices 3 and the lower welding devices 4 are arranged one after the other.

[0070] The upper welding device 3 is fixed to one end of the upper fixing plate 25 by bolts, and the other end of the upper fixing plate 25 is fixed to the side plate 5 on the upper conveyor line by bolts.

[0071] The lower welding device 4 is fixed to one end of the lower fixing plate 26 by bolts, and the other end of the lower fixing plate 26 is fixed to the side plate 5 on the lower conveyor line by bolts.

[0072] The distribution design of the upper welding device 3 and the lower welding device 4 allows both to be set at an angle, so that when the connecting piece 2 passes the fitting part of the column 1, the ends of the upper welding device 3 and the lower welding device 4 will not touch the connecting piece 2 and the column 1, and can be welded accurately.

[0073] The upper welding device 3 and the lower welding device 4 can use laser welding guns. Laser welding achieves welding through highly concentrated and focused energy, so that the surface of the workpiece is quickly melted and welded. Therefore, when welding the connecting piece 2 and the column 1, there is no need to use welding wire or solder, which further simplifies the operation process.

[0074] The upper welding device 3 and the lower welding device 4 are arranged one after the other, enabling two welding operations that can be carried out separately. This design can prevent interference between the lower welding device 4 and the second conveying mechanism, ensuring that the second conveying mechanism can smoothly convey the connecting member 2. Meanwhile, the upper welding device 3 can first weld the connecting member 2 and the column 1, allowing the connecting member 2 to be separated from the fixed seat 16 subsequently.

[0075] As Figure 1 , Figure 5 and Figure 6 As shown, two side plates 5 on the upper conveying line and the lower conveying line are both penetrated by driving rollers 7 connected by bearings. One end of the driving rollers 7 on the upper conveying line and the lower conveying line is fixed with meshing transmission gears 8 by snap pins. The head and tail ends of the side plates 5 on the upper conveying line and the side plates 5 on the lower conveying line are welded and connected by connecting plates 9. The connecting plates 9 are in a "C" shape, and the bottom surface of the connecting plates 9 is welded and fixed to the base 24 by metal rods.

[0076] The conveying wheels 6 between the two side plates 5 and one end of the driving rollers 7 are connected by chain drive. One end of the driving rollers 7 on the upper conveying line is connected to the output shaft of the driving motor 10 by chain drive, and the driving motor 10 is fixed to the connecting plate 9 at the head end of the side plate 5.

[0077] When it is necessary to convey the column 1, the driving motor 10 can be powered on and run. The driving motor 10 drives the driving rollers 7 on the upper conveying line to rotate. At this time, the driving rollers 7 can drive the conveying wheels 6 on the upper conveying line to start rotating synchronously.

[0078] Under the meshing action of the transmission gears 8, the driving rollers 7 on the upper conveying line will drive the driving rollers 7 on the lower conveying line to rotate synchronously, but the rotation directions of the two driving rollers 7 are opposite, that is, the driving rollers 7 on the upper conveying line rotate clockwise, and the driving rollers 7 on the lower conveying line rotate counterclockwise.

[0079] The driving rollers 7 on the lower conveying line will drive the conveying wheels 6 thereon to rotate synchronously. At this time, the conveying wheels 6 on the upper conveying line rotate clockwise, and the conveying wheels 6 on the lower conveying line rotate counterclockwise. When the column 1 is located between the upper conveying line and the lower conveying line, the column 1 can be linearly conveyed by the conveying wheels 6.

[0080] As Figure 3 and Figure 7 As shown, the adjusting structure includes a first lead screw 17 and a first guide rod 18 penetrating through the mounting strip 15. The top end of the first lead screw 17 is movably connected to the bottom wall of the adjusting seat 19 by a bearing, and the top end of the first guide rod 18 is welded to the bottom wall of the adjusting seat 19. The top of the adjusting seat 19 is attached to the movable plate 22, and the top surface of the movable plate 22 is fixedly bonded to the bottom surface of the fixed seat 16.

[0081] The adjusting seat 19 is hollow, and the top of the adjusting seat 19 is open. The bottom surface of the movable plate 22 extends vertically downward to form a protrusion 23, which extends into the adjusting seat 19. The adjusting seat 19 is provided with a second screw rod 20 and a second guide rod 21 that penetrates the protrusion 23.

[0082] The first screw rod 17 is threadedly connected to the mounting bar 15 , the second screw rod 20 is threadedly connected to the protrusion 23 , and both ends of the second screw rod 20 are connected to the side wall bearings of the adjustment seat 19 .

[0083] The first guide rod 18 is slidably connected to the mounting bar 15, the second guide rod 21 is slidably connected to the protrusion 23, both ends of the second guide rod 21 are welded to the side walls of the adjustment seat 19, the first screw rod 17 and the second screw rod 20 are perpendicular to each other, and the first screw rod 17 is vertical.

[0084] Before the operation, the position of the fixing seat 16 can be adjusted according to the size of the connecting member 2 to ensure that when the connecting member 2 is placed on the fixing seat 16, the fixing seat 16 can drive the connecting member 2 to fit the side of the column 1, thereby completing the subsequent welding operation.

[0085] The specific adjustment process is as follows: when it is necessary to adjust the position of the fixed seat 16 in the vertical direction, the first screw rod 17 can be screwed, and the first guide rod 18 can move along its axial direction on the mounting strip 15. During the rotational movement, the first screw rod 17 can drive the adjustment seat 19 to move along the axial direction of the first guide rod 18, and the adjustment seat 19 can adjust the position of the fixed seat 16 through the movable plate 22.

[0086] When it is necessary to adjust the position of the fixed seat 16 in the horizontal direction, the second screw rod 20 can be screwed, and the second screw rod 20 can drive the protrusion 23 to move along the second guide rod 21 in the adjustment seat 19, and the movable plate 22 can move synchronously with the protrusion 23, and then the movable plate 22 can adjust the position of the fixed seat 16.

[0087] In the description of this specification, "connection", "installation", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0088] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation 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.

[0089] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A welding device for metal furniture processing, comprising a first conveying mechanism for conveying a column (1), a second conveying mechanism for conveying a connecting piece (2), and an upper welding device (3) and a lower welding device (4) for welding the joint between the column (1) and the connecting piece (2), characterized in that: The first conveying mechanism is composed of an upper conveying line and a lower conveying line which are symmetrically distributed up and down; Both the upper conveying line and the lower conveying line include two side plates (5) distributed in parallel, and conveying wheels (6) located between the two side plates (5). A plurality of the conveying wheels (6) are equally spaced. Both ends of the conveying wheels (6) are movably connected to the side plates (5) by bearings. Limiting pieces (11) are bolted and fixed to the bottoms of both sides of the side plates (5) on the upper conveying line; There are two groups of the second conveying mechanisms symmetrically arranged with respect to the first conveying mechanism. The second conveying mechanism includes a driving wheel (12) and a driven wheel (13). Two sprockets are fixed to both the driving wheel (12) and the driven wheel (13) by snap pins. The sprockets on the driving wheel (12) and the driven wheel (13) are both sleeved with meshing transmission chains (14); A plurality of mounting bars (15) are welded and fixed to the two transmission chains (14). The mounting bars (15) are connected to a fixed seat (16) through an adjusting structure. The fixed seat (16) is used to place the connecting piece (2).

2. A welding device for metal furniture processing according to claim 1, characterized in that: There are two upper welding devices (3) and two lower welding devices (4) symmetrically arranged with respect to the first conveying mechanism. The two upper welding devices (3) are distributed in a "V" shape, and the two lower welding devices (4) are distributed in an inverted "V" shape. The upper welding devices (3) and the lower welding devices (4) are arranged one in front of the other; 3. A welding device for metal furniture processing according to claim 2, characterized in that: The upper welding device (3) is bolted and fixed to one end of the upper fixing plate (25), and the other end of the upper fixing plate (25) is bolted and fixed to the side plate (5) on the upper conveying line; The lower welding device (4) is bolted and fixed to one end of the lower fixing plate (26), and the other end of the lower fixing plate (26) is bolted and fixed to the side plate (5) on the lower conveying line.

4. A welding device for metal furniture processing according to claim 1, characterized in that: Driving rollers (7) connected by bearings penetrate through the two side plates (5) on the upper conveying line and the lower conveying line. Meshing transmission gears (8) are fixed to one ends of the driving rollers (7) on the upper conveying line and the lower conveying line by snap pins; The head and tail ends of the side plates (5) on the upper conveying line and the side plates (5) on the lower conveying line are welded and connected by connecting plates (9). The connecting plates (9) are in a "C" shape, and the bottom surface of the connecting plates (9) is welded and fixed to the base (24) by metal rods.

5. A welding device for metal furniture processing according to claim 4, characterized in that: One ends of the conveying wheels (6) and the driving rollers (7) between the two side plates (5) are connected by chain drive. One end of the driving roller (7) on the upper conveying line is connected to the output shaft of the driving motor (10) by chain drive. The driving motor (10) is fixed to the connecting plate (9) at the head end of the side plate (5).

6. A welding device for metal furniture processing according to claim 1, characterized in that: The limiting piece (11) is in an inverted "L" shape. A plurality of the limiting pieces (11) are equally spaced on the side surface of the side plate (5) on the upper conveying line. The side surfaces of the vertical ends of the limiting pieces (11) are in contact with both sides of the column (1); 7. A welding device for metal furniture processing according to claim 1, characterized in that: Both ends of the driving wheel (12) and the driven wheel (13) are movably connected to the support plate (27) by bearings. The bottom end of the support plate (27) is perpendicularly welded and fixed to the base (24); The driving wheels (12) and the driven wheels (13) on the two second conveying mechanisms are flange-connected.

8. A welding device for metal furniture processing according to claim 1, characterized in that: The adjusting structure includes a first lead screw (17) and a first guide rod (18) passing through the mounting strip (15). The top end of the first lead screw (17) is movably connected to the bottom wall of the adjusting seat (19) by a bearing, and the top end of the first guide rod (18) is welded to the bottom wall of the adjusting seat (19). The top end of the adjusting seat (19) is attached to a movable plate (22). The adjusting seat (19) is hollow, and the top end of the adjusting seat (19) is open. A convex block (23) is formed by vertically extending downward from the bottom surface of the movable plate (22), and the convex block (23) extends into the adjusting seat (19). A second lead screw (20) and a second guide rod (21) passing through the convex block (23) are arranged in the adjusting seat (19).

9. A welding device for metal furniture processing according to claim 8, characterized in that: The first lead screw (17) is threadedly connected to the mounting strip (15), the second lead screw (20) is threadedly connected to the convex block (23), and both ends of the second lead screw (20) are connected to the side wall of the adjusting seat (19) by bearings. The first guide rod (18) is slidably connected to the mounting strip (15), the second guide rod (21) is slidably connected to the convex block (23), and both ends of the second guide rod (21) are welded to the side wall of the adjusting seat (19). The first lead screw (17) and the second lead screw (20) are perpendicular to each other, and the first lead screw (17) is vertical.

10. A welding device for metal furniture processing according to claim 9, characterized in that: The top surface of the movable plate (22) is fixedly bonded to the bottom surface of the fixed seat (16). The longitudinal section of the fixed seat (16) is in a "U" shape, and the fixed seat (16) is made of rubber as a whole.

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