Automatic assembling system for seat backrest

Abstract

The utility model relates to the technical field of furniture assembly equipment, and provides an automatic assembly system for a seat backrest, which comprises a manipulator and a workbench, and a welding mechanism is arranged at the movable end of the manipulator; the seat backrest comprises a U-shaped frame and a reinforcing pipe, and a tool is arranged on the workbench; the tool can be used for positioning an upright seat backrest and an inverted seat backrest; after the seat backrest is right placed in the tool to be positioned, the manipulator drives the welding mechanism to weld one side of the reinforcing pipe to the U-shaped frame; after the seat backrest is inversely placed into the tool to be positioned, the mechanical arm drives the welding mechanism to weld the other side of the reinforcing pipe to the U-shaped frame. According to the system, automatic welding is carried out based on the mechanical arm, a worker can rapidly position a part of the seat backrest through the tool on the workbench, and can also position the upright and inverted seat backrests, so that a complete welding seam is welded, and the welding is firmer compared with spot welding.

Description

Technical Field

[0001] This utility model relates to the field of furniture assembly equipment technology, specifically an automated assembly system for seat backrests. Background Technology

[0002] With technological advancements, welding technology has been widely applied in furniture manufacturing. While traditional nailing and screw connections offer a certain level of sturdiness, they are somewhat insufficient in terms of load-bearing capacity and seismic resistance. Welding, on the other hand, enables tight connections between metal components, significantly improving the overall structural strength and stability. Furthermore, the smooth surface of welded surfaces facilitates subsequent surface treatments, which is a significant advantage in terms of product aesthetics.

[0003] CN220127908U discloses a stool frame welding device, comprising: a welding mechanism including a welding robot and a welding torch mounted on the welding robot; and a positioning mechanism including two worktables and two clamps respectively mounted on the two worktables, the clamps being used to clamp workpieces, the two worktables being located on both sides of the welding robot, the welding torch sequentially welding the workpieces on the two clamps, each clamp including a base plate, a support seat mounted on the base plate, and a quick clamp, the base plate being mounted on the worktables, the support seat being used to support and position the workpieces, and the quick clamp being used to clamp the workpieces. However, the above patent only uses the quick clamp to fix the workpieces, and it is unclear how it positions the various components that make up the stool frame.

[0004] Based on this, the technical problem to be solved by this application is: how to quickly locate parts and further improve the efficiency of automatic welding. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides an automated assembly system for seat backrests. This system is based on robotic arm automatic welding. The tooling on the workbench enables the operator to quickly position the components of the seat backrest, and can also position the seat backrests in both upright and inverted positions, thereby welding a complete weld, which is more robust than spot welding.

[0006] The technical solution of this utility model is:

[0007] An automated assembly system for a seat back includes a robotic arm and a worktable. The movable end of the robotic arm is equipped with a welding mechanism. The seat back includes a U-shaped frame and a reinforcing tube. The worktable is equipped with a tooling. The tooling is capable of positioning an upright seat back and an inverted seat back.

[0008] After the seat back is placed upright in the tooling and positioned, the robot arm drives the welding mechanism to weld one side of the reinforcing tube to the U-shaped frame;

[0009] After the seat back is placed upside down into the tooling for positioning, the robotic arm drives the welding mechanism to weld the other side of the reinforcing tube to the U-shaped frame.

[0010] In the aforementioned automated assembly system for seat backrests, the tooling is provided with a plurality of first protrusions and a plurality of second protrusions; the plurality of first protrusions cooperate with each other to position the U-shaped frame; the plurality of second protrusions cooperate with each other to position the reinforcing tube.

[0011] In the aforementioned automated assembly system for seat backrests, the tooling includes a base plate and multiple positioning rods; the multiple positioning rods are arranged side by side and are all used to support the U-shaped frame or reinforcing tube.

[0012] In the aforementioned automated assembly system for seat backrests, the tooling further includes a support crossbar stacked on a positioning rod; the support crossbar is provided with a plurality of third protrusions; the plurality of third protrusions cooperate with each other to position the legs of the U-shaped frame.

[0013] The aforementioned automated assembly system for seat backrests also includes a clamping mechanism for pressing the seat backrests onto the tooling.

[0014] In the aforementioned automated assembly system for seat backrests, the clamping mechanism consists of multiple quick clamps or pneumatic clamps.

[0015] In the aforementioned automated assembly system for seat backrests, the tooling is detachably mounted on the worktable via multiple C-clamps.

[0016] The aforementioned automated assembly system for seat backrests also includes a panel for blocking the strong light generated during the welding process.

[0017] One of the above-described technical solutions of this utility model has at least one of the following advantages or beneficial effects:

[0018] This invention utilizes a robotic arm to automate welding, reducing the labor intensity of workers. The robotic arm also ensures standardized operation, preventing incomplete welds and guaranteeing welding quality. Simultaneously, the tooling on the worktable allows workers to quickly position the seat back components, including both upright and inverted seat backs, thus enabling the welding of complete welds that are more robust than spot welding. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of Embodiment 1 of the present invention;

[0020] Figure 2 This is a schematic diagram of the seat back being positioned upright in Embodiment 1 of this utility model;

[0021] Figure 3This is a schematic diagram of the inverted positioning of the seat back in Embodiment 1 of this utility model;

[0022] Figure 4 This is a schematic diagram of the seat back of Embodiment 1 of this utility model.

[0023] The correspondence between the labels in the diagram is as follows:

[0024] Workbench 1; Fixture 2; Base plate 21; Positioning rod 22; Support crossbar 23; First positioning rod 221; Second positioning rod 222; Third positioning rod 223; Fourth positioning rod 224; Fifth positioning rod 225; Sixth positioning rod 226; Seventh positioning rod 227; Robotic arm 3; Quick clamp 4; Enclosure 5; First protrusion 101; Second protrusion 102; Third protrusion 103; Seat backrest a; U-shaped frame 1a; Reinforcing tube 2a; Support leg 3a. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1

[0027] refer to Figures 1-4 An automated assembly system for a seat back includes a robotic arm 3 and a worktable 1. The movable end of the robotic arm 3 is equipped with a welding mechanism 31. The worktable 1 is equipped with a tooling 2. The tooling 2 is capable of positioning an upright seat back a and an inverted seat back a. The seat back a includes a U-shaped frame 1a and a reinforcing tube 2a. In this embodiment, specifically, both the U-shaped frame 1a and the reinforcing tube 2a are circular steel pipes. During welding, arc welding is used to completely weld the connection gap between the U-shaped frame 1a and the reinforcing tube 2a.

[0028] In practical application, after the worker places the seat back a upright into the fixture 2 for positioning, the robot arm 3 drives the welding mechanism 31 to weld one side of the reinforcing tube 2a onto the U-shaped frame 1a; then, the worker flips the seat back a over, places it upside down into the fixture 2 for positioning, and the robot arm 3 drives the welding mechanism 31 to weld the other side of the reinforcing tube 2a onto the U-shaped frame 1a.

[0029] This embodiment achieves automated welding through robotic arm 3, reducing the labor intensity of workers. Furthermore, robotic arm 3 can operate in a standardized manner, preventing incomplete welds and ensuring welding quality. Simultaneously, the tooling 2 on the workbench 1 allows workers to quickly position components of the seat back a, including both upright and inverted seat back a, thereby welding a complete weld that is more robust than spot welding.

[0030] In this embodiment, specifically, the tooling 2 is provided with a plurality of first protrusions 101 and a plurality of second protrusions 102; the plurality of first protrusions 101 cooperate with each other to position the U-shaped frame 1a; the plurality of second protrusions 102 cooperate with each other to position the reinforcing tube 2a. More specifically, a first protrusion 101 is provided on each side of the U-shaped frame 1a, and a first protrusion 101 is provided inside the bend of the U-shaped frame 1a, thereby completely positioning the U-shaped frame 1a. As for the second protrusions 102, they are provided according to the welding position of the reinforcing tube 2a, and the second protrusions 102 are arranged in pairs on both sides of the reinforcing tube 2a to achieve a limiting function.

[0031] In this embodiment, specifically, the tooling 2 includes a base plate 21 and multiple positioning rods 22; the multiple positioning rods 22 are arranged side by side and are all used to support the U-shaped frame 1a or the reinforcing tube 2a. A first protrusion 101 is provided on the positioning rod 22. More specifically, there are a first positioning rod 221, a second positioning rod 222, a third positioning rod 223, a fourth positioning rod 224, a fifth positioning rod 225, a sixth positioning rod 226, and a seventh positioning rod 227; the gap between the first positioning rod 221 and the second positioning rod 222 and the gap between the sixth positioning rod 226 and the seventh positioning rod 227 are sufficient to support the U-shaped frame 1a.

[0032] In this embodiment, the legs 3a of the U-shaped frame 1a extend obliquely outward; the tooling 2 also includes a support crossbar 23 stacked on the positioning rod 22; the support crossbar 23 is provided with a plurality of third protrusions 103; the plurality of third protrusions 103 cooperate with each other to position the legs 3a of the U-shaped frame 1a. Under this design, when the seat back a is inverted and placed into the tooling 2 for positioning, the position of the legs 3a can still be positioned.

[0033] In practical applications, to prevent the seat backrest a from moving during welding and thus ensure welding quality, a clamping mechanism is also included to press the seat backrest a firmly onto the tooling 2. Preferably, in this embodiment, the clamping mechanism consists of three quick-clamping clamps 4. The three quick-clamping clamps 4 are respectively arranged on one side of the U-shaped frame 1a. Of course, this embodiment does not limit the number or arrangement of the quick-clamping clamps 4, as long as the clamping function is satisfied.

[0034] In a preferred embodiment, the tooling 2 is detachably mounted on the worktable 1 using a C-clamp. For practical production considerations, detachable mounting of the tooling 2 improves production flexibility. It should be noted that the C-clamp is not shown in the figure.

[0035] In practical applications, in order to block the strong light generated during the welding process from harming the eyesight of workers, a partition 5 is also included.

[0036] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An automated assembly system for a seat backrest, comprising a robot and a worktable, a welding mechanism being provided on a movable end of the robot; the seat backrest comprising a U-shaped frame and a reinforcing pipe, characterized in that, The workbench is provided with a tooling; the tooling can position the upright seat backrest and the inverted seat backrest; The tooling is provided with a plurality of first protrusions and a plurality of second protrusions; the plurality of first protrusions cooperate with each other to position the U-shaped frame; the plurality of second protrusions cooperate with each other to position the reinforcing pipe; the tooling comprises a bottom plate and a plurality of positioning rods; the plurality of positioning rods are arranged side by side and are used to support the U-shaped frame or the reinforcing pipe; the tooling further comprises a supporting crossbar stacked on the positioning rods; the supporting crossbar is provided with a plurality of third protrusions; the plurality of third protrusions cooperate with each other to position the leg of the U-shaped frame; When the seat backrest is positioned in the tooling in an upright manner, a welding mechanism is driven by a mechanical hand to weld one side of the reinforcing pipe to the U-shaped frame; When the seat backrest is positioned in the tooling in an inverted manner, the welding mechanism is driven by the mechanical hand to weld the other side of the reinforcing pipe to the U-shaped frame.

2. The automated assembly system of seat backs according to claim 1, wherein, Further comprising a pressing mechanism for pressing the seat backrest to the tooling.

3. The automated assembly system of seat backs according to claim 2, wherein, The pressing mechanism is composed of a plurality of quick clamps or pneumatic clamps.

4. The automated assembly system of seat backs of claim 1, wherein, The tooling is detachably arranged on the workbench through a plurality of C-shaped clamps.

5. The automated assembly system of seat backs of claim 1, wherein, Further comprising a coaming for blocking the strong light generated in the welding process.

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