Multi-batten chair back welding tool and multi-batten chair back automatic welding forming method

Abstract

The invention provides a multi-batten chair back structure welding tool and a multi-batten chair back automatic welding forming method.The multi-batten chair back structure welding tool comprises a mounting seat body, a tool platform body and a positioning tool assembly arranged on the tool platform body, and the tool platform body is rotationally connected with the mounting seat body; the positioning tool assembly is provided with a main positioning assembly and an auxiliary tool positioning assembly, the main positioning assembly and the auxiliary tool positioning assembly are both connected to the tool platform body, and the main positioning assembly comprises a first positioning mechanism and a second positioning mechanism; the first positioning mechanism and the second positioning mechanism form a first positioning space on the tool platform body; according to the chair back structure welding tool, a welding workpiece of a multi-batten structure can be automatically formed and positioned, positioning is stable, automatic welding integration is achieved, and the welding efficiency is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of environmental equipment production, and in particular to a welding tool for a chair back with multiple slats and an automatic welding method for a chair back with multiple slats. Background Art

[0002] As we all know, in the field of industrial automatic production, the trend of industrial automation and intelligent production is becoming more and more common. With the continuous updating and advancement of production technology, the requirements for intelligent processing equipment used in various fields are also getting higher and higher. For example, in the field of welding processing and production, in order to ensure the welding effect and welding efficiency, the workpiece needs to be positioned on the tooling platform before welding. In the welding process of some workpieces with special structures, manual positioning or semi-automatic positioning is usually adopted, and then welding is carried out by manual welding methods to ensure the welding effect of each welding surface on the special workpiece. For example, when welding workpieces with a multi-slat seat back structure, the welding tooling used for the seat back has a simple positioning tooling structure and cannot be positioned in every direction because it needs to be positioned. There are many slats to be welded, and there must be no deviation in the distance between each slat and the connection between the head and the tail. In addition, the structure must be stable during welding. Some tooling needs to be manually flipped to adjust the welding surface when double-sided welding is performed after positioning. Simple positioning tooling is only suitable for positioning small workpieces. When positioning workpieces with larger areas, the set positioning structure is not stable enough and cannot be positioned independently, resulting in low production efficiency. The average daily output can only reach about three. At the same time, if manual welding is used, the worker's skin is easily burned and injured, leading to skin diseases and causing certain harm to the body. Therefore, a multi-slat chair back welding tool is needed that can perform self-forming and positioning for the welding of cylindrical structures, has stable positioning, achieves self-welding integration, and ensures welding efficiency. Summary of the invention

[0003] Based on this, it is necessary for the present invention to provide a multi-slat chair back welding tool that can independently position when welding a multi-slat structure, has a stable structure, and ensures welding efficiency.

[0004] In order to solve the above technical problems, the present invention provides a multi-slat chair back structure welding tool, including a mounting seat body, a tooling platform body and a positioning tooling assembly arranged on the tooling platform body, the tooling platform body is rotatably connected to the mounting seat body, the positioning tooling assembly is provided with a main positioning assembly and an auxiliary tooling positioning assembly, the main positioning assembly and the auxiliary tooling positioning assembly are both connected to the tooling platform body, the main positioning assembly includes a first positioning mechanism and a second positioning mechanism, the first positioning mechanism and the second positioning mechanism form a first positioning space on the tooling platform body, the first positioning space is used to position the workpiece for welding on a first orientation plane, the auxiliary tooling positioning assembly includes an auxiliary positioning mechanism, the auxiliary positioning mechanism forms a second positioning space between the first positioning mechanism and the second positioning mechanism on the tooling platform body, the second positioning space is used to assist the main positioning assembly to position the workpiece for welding on a second orientation plane.

[0005] Preferably, a first platform welding surface and a second platform welding surface are provided on the tooling platform body, the main positioning component is arranged on the first platform welding surface, and the auxiliary tooling positioning component is arranged on the second platform welding surface, and the first platform welding surface and the second platform welding surface are adjacent surfaces arranged on the front and back.

[0006] Preferably, the first positioning mechanism and the second positioning mechanism are respectively arranged at the upper and lower ends of the first platform welding surface, and the structure of the first positioning mechanism is the same as that of the second positioning structure, and are respectively used to position the upper and lower ends of the workpiece. The first positioning mechanism includes a long rod positioning member and a welding rod positioning member, and the long rod positioning member and the welding rod positioning member are spaced apart. The long rod positioning member is used to press and position the workpiece, and the welding rod positioning member is used to position the workpiece with interval limiting.

[0007] Preferably, the long rod positioning member includes a clamping long rod body and a power driving member, both ends of the clamping long rod body are connected to the power driving member through a connecting seat block, one end of the connecting seat block is provided with a connecting notch, and the connecting notch is used to connect the clamping long rod body, and the other end face of the connecting seat block is connected with one end of a connecting shaft, and the other end of the connecting shaft is connected to the power output end of the power driving member, and threaded deep holes are evenly distributed on the surface of the clamping long rod body, and there are multiple threaded deep holes.

[0008] Preferably, the welding rod positioning member includes a welding rod spacing sub-column and a lever cylinder positioning unit group, the welding rod spacing sub-column is arranged at a position close to the lever cylinder positioning unit group, the welding rod spacing sub-column includes welding rod spacing sub-column individuals, and there are multiple welding rod spacing sub-column individuals. Every two welding rod spacing sub-column individuals are arranged at intervals on the same horizontal line to form a plate strip spacing position, and there are multiple welding rod spacing positions for spacing and positioning welding plates.

[0009] Preferably, the lever cylinder positioning unit group includes a lever cylinder positioning member, and a plurality of the lever cylinder positioning members are provided, each of the lever cylinder positioning members is arranged at intervals, and the lever cylinder positioning member is provided with a locking lever and a cylinder element, and the bottom of the cylinder element is connected to the end position of one end of the first platform welding surface through a connecting main board member, and the connecting main board member includes a connecting main board and a positioning seat block, and the bottom surface of the positioning seat block is connected to the connecting main board, and the cylinder element and the positioning seat block are arranged adjacent to each other, and an arc-shaped groove is provided on the upper surface of the positioning seat block, and the arc-shaped groove is used to correspond to the accommodation of part of the plate strip welding body.

[0010] Preferably, the lever cylinder positioning member is also provided with a T-seat block, the locking lever is connected to the cylinder element through one end of the lever lock, a connecting port is provided on one end of the lever lock, a connecting space is formed on the connecting port, the connecting space is used to correspond to the top body of the T-seat block, a limiting through hole is provided on the outer surface of the connecting space, and the lever lock is used to form a locking support force below the middle position of the locking lever.

[0011] Preferably, the auxiliary positioning mechanism includes a first auxiliary positioning member and a second auxiliary positioning member, the first auxiliary positioning member and the second auxiliary positioning member are spaced apart on both sides of the second platform welding surface, the first positioning auxiliary member includes an auxiliary round rod body and a pushing power member, and the two ends of the auxiliary round rod body are connected to the output end of the pushing power member through a connecting seat plate.

[0012] Preferably, a circular countersunk hole is opened on the middle plate surface of the connecting seat plate, and the circular countersunk hole is used for interference fit connection of the auxiliary round rod body. One end of the connecting seat plate is an abutment positioning surface, and the other end is provided with a connecting circular hole for connecting the power output shaft end of the driving power member.

[0013] Preferably, a middle pressure rod is provided between the first auxiliary positioning member and the second auxiliary positioning member, and the middle pressure rod is connected to the middle position of the second platform welding surface through a connecting plate. Side positioning members are also provided at both ends of the tooling platform body, and the side positioning members include a telescopic positioning rod and a cylinder driving member, one end of the telescopic positioning rod is a positioning contact surface, and the other end is connected to the power output end of the cylinder driving member.

[0014] Preferably, the present invention also provides a method for automatic welding and forming a multi-slat chair back, comprising a chair back structure welding tool, a robot automatic device, an automatic welding device, a bending machine device and a controller, wherein the controller is electrically connected to the robot automatic device, the automatic welding device and the bending machine device, and comprises the following steps:

[0015] S1. Start the robot automatic equipment to position the multi-slat chair back structure on the chair back structure welding tooling in sequence before welding:

[0016] S2. After the multi-slat chair back structure is positioned on the chair back structure welding fixture, the welding program is set on the automatic welding equipment, and the welding program is debugged on the panel of the robot automatic equipment to weld the first side of the chair back structure;.

[0017] S3, level the first welded surface of the seat back structure, check whether the welded surface is flat and whether there is any gap, and then turn the seat back structure over to the second welded surface for welding;

[0018] S4. After the second welding surface of the seat back structure is completed, the entire seat back structure is moved to the bending machine by a robot automatic device, the R1 curved surface mold is installed on the bending machine, and the equipment parameters are adjusted;

[0019] S5. Bend the seat surface of the welded chair back structure into an integral R1 curved surface at the knee position, replace the R2 curved surface forming mold, adjust the bending parameters on the bending machine, and bend the seat surface of the R1 curved surface into an integral R2 seat back curved surface for the second time. The entire chair back structure is bent twice to complete the forming, and the automatic welding forming of the chair back structure is completed;

[0020] The chair back structure welding tool is the multi-slat chair back structure welding tool mentioned above, and the set bending parameters include the bending angle of the seat surface, and the bending angle range of the seat surface is set to 120-135°.

[0021] The beneficial effects of the present invention are as follows: the present invention provides a multi-slat chair back structure welding tool, which is provided with a mounting seat body, a tool platform body and a positioning tool assembly, the positioning tool assembly is provided with a main positioning assembly and an auxiliary tool positioning assembly, the main positioning assembly includes a first positioning mechanism and a second positioning mechanism, the first positioning mechanism and the second positioning mechanism form a first positioning space on the tool platform body, the first positioning space is used to position the workpiece for welding on a first orientation plane, the auxiliary tool positioning assembly includes an auxiliary positioning mechanism, the auxiliary positioning mechanism forms a second positioning space between the first positioning mechanism and the second positioning mechanism on the tool platform body, the second positioning space is used to assist the main positioning assembly to position the workpiece for welding on a second orientation plane, the chair back structure welding tool provided by the present invention can perform autonomous forming and positioning of welding workpieces with a multi-slat body structure, the positioning is stable, autonomous welding integration is achieved, and the multi-slat chair back welding tool with high welding efficiency is ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and other purposes, features and advantages of the present invention will become more clear by more specific description of the preferred embodiments of the present invention shown in the accompanying drawings. The same reference numerals indicate the same parts in all the accompanying drawings, and the accompanying drawings are not deliberately scaled to the actual size, and the focus is on illustrating the main purpose of the present invention.

[0023] Figure 1 It is a schematic diagram of a preferred embodiment of a welding tool for a multi-slat chair back structure of the present invention;

[0024] Figure 2 It is a schematic plan view of a welding tool for a multi-slat chair back structure of the present invention;

[0025] Figure 3 It is a schematic diagram of another angle of the welding tooling of the multi-slat chair back structure of the present invention;

[0026] Figure 4 It is a schematic diagram of the reverse side of the welding tool for the multi-slat chair back structure of the present invention;

[0027] Figure 5 It is a schematic diagram of the chair back molding after the multi-slat chair back structure welding tooling of the present invention is implemented.

[0028] In the figure: 1. mounting seat; 2. tooling platform body; 21. first platform welding surface; 22. second platform welding surface; 3. first positioning mechanism; 31. long rod positioning member; 32. welding rod positioning member; 33. pressing long rod body; 330. threaded deep hole; 34. connecting seat block; 35. connecting shaft; 36. power drive member; 37. welding rod spacing column; 38. welding rod spacing column individual; 380. plate spacing position; 4. second positioning mechanism; 5. first positioning space; 6. auxiliary positioning mechanism; 60. second positioning space; 61. auxiliary round rod body; 62. pushing power member; 63. connecting seat plate 7. rod cylinder positioning; 71. locking lever; 72. lever lock; 73. 8. connecting main board; 9. positioning seat block; 90. arc groove; 10. T-shaped seat block; 11. middle pressure rod; 12. telescopic positioning rod; 13. cylinder drive member. DETAILED DESCRIPTION

[0029] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings.

[0030] It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to another element and integrated therewith, or there may be an intermediate element at the same time. The terms "installed", "one end", "the other end" and similar expressions used herein are for illustrative purposes only.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art. The terms used in the specification herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0032] refer to Figure 1-4 The preferred embodiment of the present invention provides a multi-slat chair back structure welding tool, including a mounting seat body 1, a tool platform body 2 and a positioning tool assembly arranged on the tool platform body 2, the tool platform body 2 is rotatably connected to the mounting seat body 1, the tool platform body 2 can be turned over 360 degrees on the mounting seat body, the positioning tool assembly is provided with a main positioning assembly and an auxiliary tool positioning assembly, the main positioning assembly and the auxiliary tool positioning assembly are both connected to the tool platform body 2, the main positioning assembly includes a first positioning mechanism 3 and a second positioning mechanism 4, the first positioning mechanism 3 and the second positioning mechanism 4 are on the tool platform body 2 A first positioning space 5 is formed on it, and the first positioning space is used to position the workpiece for welding on a first azimuth plane. The auxiliary tooling positioning assembly includes an auxiliary positioning mechanism 6. The auxiliary positioning mechanism 6 forms a second positioning space 60 between the first positioning mechanism and the second positioning mechanism on the tooling platform body. The second positioning space 60 is used to assist the main positioning assembly to position the workpiece for welding on a second azimuth plane, which is equivalent to positioning on both sides of the plate body to be welded before welding, ensuring that the welding surface on the multiple welds formed by the multiple plates has a good welding effect, and the positioning structure before welding is stable, ensuring a good welding effect.

[0033] refer to Figure 1-4 In a further preferred embodiment, a first platform welding surface 21 and a second platform welding surface 22 are provided on the tooling platform body 2, the main positioning component is arranged on the first platform welding surface 21, and the auxiliary tooling positioning component is arranged on the second platform welding surface 22. The first platform welding surface 21 and the second platform welding surface 22 are adjacent surfaces arranged on the front and back sides. Specifically, the tooling platform body is arranged to be flippable for welding on both sides, thereby realizing autonomous and automatic welding of multi-slat workpieces without manual operation.

[0034] refer to Figure 1-4As a further preferred embodiment, the first positioning mechanism 3 and the second positioning mechanism 4 are respectively arranged at the upper and lower ends of the first platform welding surface 21, that is, a first positioning surface space is formed on the front of the tooling platform body 2, and the multi-slat welding body in the shape of a chair back is firmly positioned to improve the welding effect. The structure of the first positioning mechanism 3 is the same as that of the second positioning mechanism 4, which are respectively used to position the upper and lower ends of the workpiece. Specifically, when performing welding work, the workpieces to be faced are all multi-slat park chair back structures. Specifically, the park chair back structure has 28 slats and many welding points. There are more than 210 welds formed, so the slats are positioned in sections at the upper and lower ends of the chair back. The first positioning mechanism 3 includes a long rod positioning member 31 and a welding rod positioning member 32. The long rod positioning member 31 and the welding rod positioning member are arranged at intervals. The long rod positioning member 31 is used to press and position the workpiece, and the welding rod positioning member 32 is used to position the workpiece at intervals. Because there are many slats to be welded, the long rod positioning member 31 and the welding rod positioning member 32 are arranged at the head or tail of multiple slat bodies to form pre-welding positioning at two points to ensure that each slat body is firmly positioned.

[0035] refer to Figure 1-4 As a further preferred embodiment, the long rod positioning member 31 includes a clamping long rod body 33 and a power driving member. The two ends of the clamping long rod body 33 are connected to the power driving member through a connecting seat block 34. When a plurality of slats are arranged in sequence and spaced in a well-positioned position on the tooling platform, the clamping long rod body 33 forms a tight clamping on the head or tail of the slat body on the tooling platform body 2 to prevent the slats from shifting, ensure that no weld appears on the welding surface, and ensure the welding effect. A connecting notch is provided at one end of the connecting seat block 34. The connecting notch is used to connect the clamping long rod body. The clamping long rod body and the connecting seat block 34 can be interference fit connection or sealing connection. The connecting seat block One end of a connecting shaft 35 is connected to the other end face of 34, and the other end of the connecting shaft 35 is connected to the power output end of a power driving member 36. The power driving member 36 can be a cylinder-type driving member. Before positioning the slats, the clamping long rod body 33 is lifted from the tooling platform by the cylinder to facilitate the placement of the slat body. After each slat body is positioned at the corresponding position, threaded deep holes 330 are evenly distributed on the surface of the clamping long rod body 33. There are multiple threaded deep holes 330. The threaded deep holes 330 are used to insert shaft nails or screws, and further form a point surface on the head or tail of each slat body on the clamping long rod body 33 for clamping and positioning.

[0036] refer to Figure 1-4As a further preferred embodiment, the welding rod positioning member 32 includes a welding rod spacing sub-column 37 and a lever cylinder positioning unit group. The welding rod spacing sub-column 37 is arranged at a position close to the lever cylinder positioning unit group. The welding rod spacing sub-column includes a welding rod spacing sub-column individual 38. There are multiple welding rod spacing sub-column individuals 38. Every two welding rod spacing sub-column individuals are arranged on the same horizontal line to form a plate spacing position 380. There are multiple welding rod spacing positions for spacing and positioning welding strips. In the specific implementation, a manipulator can be enabled to automatically place each plate strip body in correspondence. The multiple plate strip bodies to be welded are placed on each corresponding plate strip spacing position 380. The entire chair back is composed of 28 plate strip bodies. Generally, more than 210 welds will be formed after the multiple plate strip bodies of a chair are spaced and positioned. The setting of the plate strip spacing position 380 is to allow each plate strip body to be evenly spaced and positioned, to ensure the stability of the positioning structure, and then to smoothly perform welding, realize autonomous positioning welding, reduce manual operation, and improve welding efficiency.

[0037] refer to Figure 1-4 As a preferred embodiment, the lever cylinder positioning unit group includes a lever cylinder positioning member 7, and a plurality of lever cylinder positioning members 7 are provided, each lever cylinder positioning member 7 is arranged at intervals, and the arranged lever cylinder positioning member 7 is used to position the columnar slats. The head and tail of the chair back structure are connected with columnar slats, and the arranged lever cylinder positioning member 7 can just firmly position the columnar slats on multiple plates, connect each slat with the columnar slat, and the connected welding surface is flat without gaps, and displacement during welding is also prevented. The lever cylinder positioning member 7 is provided with a locking lever 71 and a cylinder element 72. The arranged locking rod 71 is the main positioning element, which performs downward pressure on the surface of the cylindrical slat body to tighten it. The cylindrical strip body fits tightly against the plate body, which is convenient for welding and makes the welding surface seamless. The bottom of the cylinder element 72 is connected to the end position of one end of the first platform welding surface through the connecting main board component. The connecting main board component includes a connecting main board 8 and a positioning seat block 9. The bottom surface of the positioning seat block 9 is connected to the connecting main board 8. The connecting main board 8 and the positioning seat block 9 are set to ensure the stability of the connection structure and the overall positioning structure is more solid and convenient for positioning. The cylinder element 72 is arranged adjacent to the positioning seat block 9. The upper surface of the positioning seat block 9 is provided with an arc-shaped groove 90. The arc-shaped groove 90 is used to correspond to the accommodation of part of the strip welding body. The arc-shaped groove 90 can just accommodate part of the cylindrical strip body, so that the cylindrical strip body is firmly positioned.

[0038] refer to Figure 1-4As a further preferred embodiment, the lever cylinder positioning member 7 is further provided with a T-seat block 10. The locking lever 71 is connected to the cylinder element through one end of the lever lock 73. A connecting port is provided on one end of the lever lock 73. A connecting space is formed on the connecting port. The connecting space is used to correspond to the top body of the T-seat block 10. The setting of the T-seat block 10 is used to strengthen the connection structure of the lever lock. A limited through hole is provided on the outer surface of the connecting space. The lever lock 73 is used to form a locking support force below the middle position of the locking lever, thereby strengthening the stability of the overall locking structure of the locking lever 71, firmly locking and positioning the cylindrical strip body, facilitating welding connection, and improving the welding effect.

[0039] refer to Figure 1-4 In another embodiment, the auxiliary positioning mechanism 6 includes a first auxiliary positioning member and a second auxiliary positioning member. The first auxiliary positioning member and the second auxiliary positioning member are spaced apart and arranged on both sides of the second platform welding surface. The first auxiliary positioning member and the second auxiliary positioning member have the same structure. The first positioning auxiliary member includes an auxiliary round rod body 61 and a pushing power member 62. The two ends of the auxiliary round rod body 61 are connected to the output end of the pushing power member through a connecting seat plate 63. The auxiliary round rod body 61 forms a clamping positioning on the back side of the tooling platform body 2. The pushing power member can be a hydraulic cylinder or a telescopic cylinder.

[0040] refer to Figure 1-4 In a preferred embodiment, a circular countersunk hole is opened on the middle plate surface of the connecting seat plate 63, and the circular countersunk hole is used to connect the auxiliary round rod body by interference fit. The circular countersunk hole is used to connect the auxiliary round rod body more firmly. One end of the connecting seat plate 63 is abutting positioning surface, and the other end is provided with a connecting circular hole for connecting the power output shaft end of the driving power member 62. When the hydraulic cylinder or the telescopic cylinder is in operation, the power can be transmitted to the auxiliary round rod body 61, pushing the auxiliary round rod body 61 toward the surface of the plate strip body to be welded, and performing a pressing and positioning operation.

[0041] refer to Figure 1-4In a further preferred embodiment, a middle pressure rod 11 is provided between the first auxiliary positioning member and the second auxiliary positioning member, and the middle pressure rod 11 is connected to the middle position of the second platform welding surface through a connecting plate. The middle pressure rod 11 is used to cooperate with the first auxiliary positioning member and the second auxiliary positioning member to comprehensively compress and position the plurality of plate strips as a whole. Side positioning members are also provided at both ends of the tooling platform body 2, and the side positioning members include a telescopic positioning rod 12 and a cylinder driving member 13. One end of the telescopic positioning rod 12 is a positioning contact surface, and the other end is connected to the power output end of the cylinder driving member. Under the action of the cylinder driving member 13, the telescopic positioning rod 12 extends the positioning rod and then acts on the two ends of the cylindrical plate strip body. The telescopic positioning rods 12 on both sides position the cylindrical plate strip body in a limited manner to prevent the cylindrical plate strip body from slipping on the plate strip body during welding, resulting in gaps in the welding surface or an uneven welding surface, which affects the welding effect.

[0042] refer to Figure 1-4 In a further preferred embodiment, a bending machine is also included. The bending machine is used to bend the chair back structure into a seat shape after the welding of the entire chair back structure is completed. Specifically, the R1 curved surface mold is first installed on the bending machine, and the equipment parameters are adjusted. The welded chair surface is integrally bent to the R1 curved surface at the knee position, and the R2 curved surface forming mold is replaced, and the bending parameters are adjusted. The chair surface that has been bent with the R1 curved surface is integrally bent to the R2 seat back curved surface for the second time. The entire chair surface is bent twice to complete the forming. After the overall chair back is formed, a support structure is installed at the bottom of the chair back.

[0043] The preferred embodiment of the present invention also provides a method for automatic welding and forming a multi-slat chair back, comprising a chair back structure welding tool, a robot automatic device, an automatic welding device, a bending machine device, an R1 curved surface forming mold, an R2 curved surface forming mold and a controller, wherein the controller is electrically connected or signal-connected to the robot automatic device, the automatic welding device and the bending machine device, and comprises the following steps:

[0044] S1. Start the robot automatic equipment to position the multi-slat chair back structure on the chair back structure welding tooling in sequence before welding:

[0045] S2. After the multi-slat chair back structure is positioned on the chair back structure welding tooling, the welding program is set on the automatic welding equipment, and the welding program is debugged on the panel of the robot automatic equipment to weld the first side of the chair back structure;

[0046] S3, level the first welded surface of the seat back structure, check whether the welded surface is flat and whether there is any gap, and then turn the seat back structure over to the second welded surface for welding;

[0047] S4. After the second welding surface of the seat back structure is completed, the entire seat back structure is moved to the bending machine by a robot automatic device, the R1 curved surface mold is installed on the bending machine, and the equipment parameters are adjusted;

[0048] S5. Bend the seat surface of the welded chair back structure into an integral R1 curved surface at the knee position, replace the R2 curved surface forming mold, adjust the bending parameters on the bending machine, and bend the seat surface of the R1 curved surface into an integral R2 seat back curved surface for the second time. The entire chair back structure is bent twice to complete the forming, and the automatic welding forming of the chair back structure is completed;

[0049] S6. After the chair back structure is welded and formed, the robot manipulator is further turned on to start the welding equipment to weld the chair armrests, chair support legs and other subsequent chair structures;

[0050] The chair back structure welding tool is a multi-slat chair back structure welding tool provided in the above preferred embodiment. The set bending parameters include the bending angle of the chair surface. The bending angle range of the chair surface is set to 120-135°. Specifically, when performing welding work, the bending angle of the chair surface is set according to the specific size setting. The R1 curved surface mold is used for bending the curved surface at the knee position on the chair surface, and the R2 curved surface mold is used for forming the curved surface of the seat back. The R1 curved surface mold and the R2 curved surface mold are molds made of hard steel, which are existing press-bending molds. The size of the mold can refer to the finished product schematic diagram of the embodiment, as shown in the schematic diagram. Figure 5 As shown, Figure 5 A schematic diagram of a finished product provided for a preferred embodiment.

[0051] The beneficial effects of the present invention are as follows: the present invention provides a multi-slat chair back structure welding tool, which is provided with a mounting seat body, a tool platform body and a positioning tool assembly, the positioning tool assembly is provided with a main positioning assembly and an auxiliary tool positioning assembly, the main positioning assembly includes a first positioning mechanism and a second positioning mechanism, the first positioning mechanism and the second positioning mechanism form a first positioning space on the tool platform body, the first positioning space is used to position the workpiece for welding on a first orientation plane, the auxiliary tool positioning assembly includes an auxiliary positioning mechanism, the auxiliary positioning mechanism forms a second positioning space between the first positioning mechanism and the second positioning mechanism on the tool platform body, the second positioning space is used to assist the main positioning assembly to position the workpiece for welding on a second orientation plane, the chair back structure welding tool provided by the present invention can perform autonomous forming and positioning of welding workpieces with a multi-slat body structure, the positioning is stable, autonomous welding integration is achieved, and welding efficiency is ensured.

[0052] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0053] In the description of this specification, the description with reference to the terms "preferred embodiment", "further embodiment", "other embodiments" or "specific example" 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 application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0054] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A multi-slat chair back structure welding tool, characterized in that: It includes a mounting seat body, a tooling platform body and a positioning tooling assembly arranged on the tooling platform body, the tooling platform body is rotatably connected to the mounting seat body, the positioning tooling assembly is provided with a main positioning assembly and an auxiliary tooling positioning assembly, the main positioning assembly and the auxiliary tooling positioning assembly are both connected to the tooling platform body, the main positioning assembly includes a first positioning mechanism and a second positioning mechanism, the first positioning mechanism and the second positioning mechanism form a first positioning space on the tooling platform body, the first positioning space is used to position the workpiece for welding on a first azimuth plane, the auxiliary tooling positioning assembly includes an auxiliary positioning mechanism, the auxiliary positioning mechanism forms a second positioning space between the first positioning mechanism and the second positioning mechanism on the tooling platform body, the second positioning space is used to assist the main positioning assembly to position the workpiece for welding on a second azimuth plane.

2. The multi-slat chair back structure welding tool as claimed in claim 1, characterized in that: The tooling platform body is provided with a first platform welding surface and a second platform welding surface, the main positioning component is arranged on the first platform welding surface, and the auxiliary tooling positioning component is arranged on the second platform welding surface, and the first platform welding surface and the second platform welding surface are adjacent surfaces arranged on the front and back.

3. The multi-slat chair back structure welding tool as claimed in claim 1, characterized in that: The first positioning mechanism and the second positioning mechanism are respectively arranged at the upper and lower ends of the first platform welding surface. The structure of the first positioning mechanism is the same as that of the second positioning structure, and they are respectively used to position the upper and lower ends of the workpiece. The first positioning mechanism includes a long rod positioning member and a welding rod positioning member. The long rod positioning member and the welding rod positioning member are spaced apart. The long rod positioning member is used to press and position the workpiece, and the welding rod positioning member is used to position the workpiece with interval limiting.

4. The multi-slat chair back structure welding tool as claimed in claim 3, characterized in that: The long rod positioning component includes a clamping long rod body and a power driving component. Both ends of the clamping long rod body are connected to the power driving component through a connecting seat block. One end of the connecting seat block is provided with a connecting notch, and the connecting notch is used to connect the clamping long rod body. The other end surface of the connecting seat block is connected with one end of a connecting shaft, and the other end of the connecting shaft is connected to the power output end of the power driving component. Threaded deep holes are evenly distributed on the surface of the clamping long rod body, and a plurality of threaded deep holes are provided.

5. The multi-slat chair back structure welding tool as claimed in claim 3, characterized in that: The welding rod positioning part includes a welding rod spacing sub-column and a lever cylinder positioning unit group. The welding rod spacing sub-column is arranged at a position close to the lever cylinder positioning unit group. The welding rod spacing sub-column includes welding rod spacing sub-column individuals. There are multiple welding rod spacing sub-column individuals. Every two welding rod spacing sub-column individuals are arranged on the same horizontal line to form a plate strip spacing position. There are multiple welding rod spacing positions for spacing and positioning welding plates.

6. The multi-slat chair back structure welding tool as claimed in claim 5, characterized in that: The lever cylinder positioning unit group includes a lever cylinder positioning part, and there are multiple lever cylinder positioning parts. Each lever cylinder positioning part is arranged at intervals. The lever cylinder positioning part is provided with a locking lever and a cylinder element. The bottom of the cylinder element is connected to the end position of one end of the first platform welding surface through a connecting main board component. The connecting main board component includes a connecting main board and a positioning seat block. The bottom surface of the positioning seat block is connected to the connecting main board. The cylinder element and the positioning seat block are arranged adjacent to each other. The upper surface of the positioning seat block is provided with an arc-shaped groove, and the arc-shaped groove is used to correspond to the accommodation of part of the plate strip welding body.

7. The multi-slat chair back structure welding tool as claimed in claim 6, characterized in that: The lever cylinder positioning piece is also provided with a T-seat block, and the locking lever is connected to the cylinder element through one end of the lever lock buckle. A connecting port is provided on one end of the lever lock buckle, and a connecting space is formed on the connecting port. The connecting space is used to correspond to the top body of the T-seat block, and a limiting through hole is provided on the outer surface of the connecting space. The lever lock buckle is used to form a locking support force below the middle position of the locking lever.

8. The multi-slat chair back structure welding tool as claimed in claim 1, characterized in that: The auxiliary positioning mechanism includes a first auxiliary positioning member and a second auxiliary positioning member. The first auxiliary positioning member and the second auxiliary positioning member are spaced apart and arranged on both sides of the second platform welding surface. The first positioning auxiliary member includes an auxiliary round rod body and a pushing power member. Both ends of the auxiliary round rod body are connected to the output end of the pushing power member through a connecting seat plate.

9. The multi-slat chair back structure welding tool as claimed in claim 8, characterized in that: A circular countersunk hole is provided on the middle plate surface of the connecting seat plate, and the circular countersunk hole is used for interference fit connection of the auxiliary round rod body. One end of the connecting seat plate is an abutment positioning surface, and the other end is provided with a connecting circular hole, which is used to connect the power output shaft end of the pushing power member. A middle pressure rod is provided between the first auxiliary positioning member and the second auxiliary positioning member, and the middle pressure rod is connected to the middle position of the second platform welding surface through a connecting plate. Side positioning members are also provided at both ends of the tooling platform body, and the side positioning members include a telescopic positioning rod and a cylinder driving member. One end of the telescopic positioning rod is a positioning contact surface, and the other end is connected to the power output end of the cylinder driving member.

10. A method for automatically welding and forming a multi-slat chair back, comprising a chair back structure welding tool, a robot automatic device, an automatic welding device, a bending machine device and a controller, wherein the controller is electrically connected to the robot automatic device, the automatic welding device and the bending machine device, and characterized in that: The following steps are involved: S1. Start the robot automatic equipment to position the multi-slat chair back structure on the chair back structure welding tooling in sequence before welding: S2. After the multi-slat chair back structure is positioned on the chair back structure welding fixture, the welding program is set on the automatic welding equipment, and the welding program is debugged on the panel of the robot automatic equipment to weld the first side of the chair back structure;. S3, level the first welded surface of the seat back structure, check whether the welded surface is flat and whether there is any gap, and then turn the seat back structure over to the second welded surface for welding; S4. After the second welding surface of the seat back structure is completed, the entire seat back structure is moved to the bending machine by a robot automatic device, the R1 curved surface mold is installed on the bending machine, and the equipment parameters are adjusted; S5. Bend the seat surface of the welded chair back structure into an integral R1 curved surface at the knee position, replace the R2 curved surface forming mold, adjust the bending parameters on the bending machine, and bend the seat surface of the R1 curved surface into an integral R2 seat back curved surface for the second time. The entire chair back structure is bent twice to complete the forming, and the automatic welding forming of the chair back structure is completed; The chair back structure welding tool is the multi-slat chair back structure welding tool described in claims 1 to 9 above, and the set bending parameters include the bending angle of the seat surface, and the bending angle range of the seat surface is set to 120-135°.

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