An automatic wire feeding brazing apparatus for an inner tube and cover plate assembly of a compressor

Abstract

The utility model discloses a kind of for the automatic wire feeding brazing equipment of inner row pipe and cover plate assembly of compressor, including chain conveyer, robot welding assembly, automatic wire feeding unit, high-frequency heater and binocular camera, chain conveyer top is conveyed with the tooling plate for installing cover plate assembly;Robot welding assembly includes manipulator and welding torch, floating mechanism is installed at the end of manipulator, welding torch is installed on the floating mechanism, makes welding torch and the linear movement buffer between the end of manipulator;Automatic wire feeding unit is used to pull and convey welding wire to welding torch.The utility model realizes the full automation of compressor inner row pipe and cover plate assembly welding process by intelligent automatic wire feeding and welding torch floating compensation technology, adopts high-frequency heating process and silver-containing welding wire, realizes efficient, stable welding process, and can adapt to different welding process requirement, improves welding efficiency and product quality.Reduces manual operation risk simultaneously, with extensive popularization and application value.

Description

Technical Field

[0001] This utility model relates to the field of welding equipment technology, and in particular to an automatic wire feeding brazing device for the inner pipe and cover plate assembly of a compressor. Background Technology

[0002] Currently, in the compressor manufacturing process, such as Figure 5 The welding of the compressor's inner pipe 01 and cover plate assembly 02 relies heavily on manual operation or semi-automatic equipment, resulting in problems such as large operational errors, low efficiency, unstable welding quality, and insufficient precision in controlling welding parameters. Existing technologies have limitations in functions such as automatic wire feeding, welding position positioning, and welding head height adjustment, making it difficult to meet the demands of high-precision, high-efficiency production of new compressors.

[0003] Therefore, it is necessary to research and develop an automatic wire feeding brazing equipment for the internal pipe and cover plate assembly of a compressor. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an automatic wire feeding brazing equipment for the inner pipe and cover plate assembly of a compressor, which addresses the shortcomings of the prior art and achieves an efficient and stable welding process that can adapt to different welding process requirements.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] An automatic wire feeding brazing device for an inner pipe and cover plate assembly of a compressor, comprising:

[0007] Chain conveyor, with tooling plates for mounting cover plate assemblies conveyed at the top;

[0008] A robotic welding assembly includes a robotic arm and a welding torch, wherein a floating mechanism is mounted on the end of the robotic arm, and the welding torch is mounted on the floating mechanism to provide linear movement buffer between the welding torch and the end of the robotic arm;

[0009] An automatic wire feeding unit is used to pull and feed welding wire to the welding torch;

[0010] A high-frequency heater is installed at the output port of the welding torch, and the heating end of the high-frequency heater is designed as a clamp.

[0011] Preferably, the floating mechanism includes a compression spring and a pair of linear guide rails, a connecting plate one is installed at the end of the manipulator, a connecting plate two is installed at the bottom of the welding torch, and the connecting plate one and the connecting plate two are slidably connected by the linear guide rails.

[0012] The second connecting plate has an insertion hole. Two parallel linear guide rails are fixedly connected to the connecting plate. A compression spring is fixed to a limiting block welded to the first connecting plate, and an insertion block is fixedly connected to the other end of the compression spring. The insertion block is inserted into the insertion hole and is slidably connected to the first connecting plate.

[0013] Preferably, the chain conveyor is driven by a stepper motor.

[0014] The automatic wire feeding brazing equipment also includes a binocular camera (5) for acquiring the weld position after the inner pipe (01) and the cover plate assembly (02) are combined.

[0015] Preferably, a positioning block is detachably installed on the top of the tooling plate, and a locking plate with positioning holes is provided on the outside of the cover plate assembly, and the cover plate assembly is installed by positioning and insertion through the positioning block and the positioning hole.

[0016] Preferably, the bottom of the welding station of the chain conveyor is equipped with a frame, and the top of the frame is equipped with a side push assembly for positioning the cover plate assembly on the welding station. The frame is made of high-strength aluminum profile.

[0017] Preferably, the side-push assembly includes a cylinder and a push block. The cylinder's connecting end is provided with a pneumatic mechanism for providing kinetic energy, and the cylinder's output end is connected to the push block in a transmission manner. The cylinder is made of rubber.

[0018] Preferably, the connection end of the automatic wire feeding unit is provided with a temperature sensor for sensing the temperature of the welding wire during the wire feeding process.

[0019] Preferably, the automatic wire feeding unit is equipped with a wire feeding speed sensor to monitor the wire feeding speed during the welding process, and the automatic wire feeding unit and the high-frequency heater form a closed-loop control system.

[0020] The automatic wire feeding brazing equipment also includes a control host, and the control host is electrically connected to a control panel.

[0021] This utility model has the following beneficial effects:

[0022] By employing intelligent automatic wire feeding and welding torch floating compensation technology, the welding process between the compressor's internal pipe assembly and the cover plate assembly is fully automated. Utilizing high-frequency heating and silver-containing welding wire, a highly efficient and stable welding process is achieved, adaptable to different welding requirements, thus improving welding efficiency and product quality. Simultaneously, it reduces the risks associated with manual operation and has broad application value.

[0023] By combining visual positioning, high welding precision and stable weld quality are achieved; automatic wire feeding and high-frequency heating closed-loop control ensure continuous stability of the welding process; the welding torch is mounted on a floating mechanism, which finely adjusts the weld position, and the weld position is collected in real time by a binocular camera, which can work with the control system to guide the robot to adjust the welding head position to ensure the best welding angle and distance; it meets the needs of different production processes, supports fully automated production, and is also easy for manual intervention and debugging. Attached Figure Description

[0024] Figure 1 A first-view perspective perspective view of the overall structure of the brazing equipment provided by this utility model.

[0025] Figure 2 A second-view perspective perspective view of the overall structure of the brazing equipment provided by this utility model.

[0026] Figure 3 This is a partial structural diagram of the front end of the robot welding assembly in this utility model.

[0027] Figure 4 This is an exploded view of the welding torch and floating mechanism in this utility model.

[0028] Figure 5 This is a schematic diagram of the combined structure of the compressor workpiece and tooling plate in this utility model.

[0029] Figure 6 for Figure 5 Cross-sectional view of the structure at point A in the middle.

[0030] Figure 7 This is a schematic diagram of the automatic wire feeding system and high-frequency heating closed-loop control in this utility model.

[0031] Among them are:

[0032] Inner pipe -01; Cover plate assembly -02; Lock plate -03;

[0033] welding wire a; molten pool b;

[0034] Chain conveyor-1; Robot welding assembly-2; Automatic wire feeding unit-3; High-frequency heater-4; Binocular camera-5; Tooling plate-6; Control host-7; Positioning block-8; Frame-9; Side push assembly-10;

[0035] Robotic arm-21; Welding torch-22; Floating mechanism-23;

[0036] Compression spring - 231; Linear guide rail - 232; Connecting plate one - 233; Connecting plate two - 234; Socket - 235; Insert block - 236;

[0037] Cylinder-101; Push block-102. Detailed Implementation

[0038] The present invention will now be described in further detail with reference to the accompanying drawings and specific preferred embodiments.

[0039] In the description of this utility model, it should be understood that the terms "left side," "right side," "upper part," "lower part," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. "First," "second," etc., do not indicate the importance of the components, and therefore should not be construed as a limitation of this utility model. The specific dimensions used in this embodiment are only for illustrating the technical solution and do not limit the protection scope of this utility model.

[0040] like Figure 1-7 As shown, an automatic wire feeding brazing device for the inner pipe and cover plate assembly of a compressor includes a chain conveyor 1, a robotic welding assembly 2, an automatic wire feeding unit 3, a high-frequency heater 4, and a binocular camera 5, wherein:

[0041] The top of the chain conveyor 1 carries a tooling plate 6 for installing the cover plate assembly 02; specifically, the chain conveyor 1 is driven by a stepper motor.

[0042] The robot welding assembly 2 includes a manipulator 21 and a welding torch 22. The manipulator 21 is equipped with a floating mechanism 23 at its end, and the welding torch 22 is mounted on the floating mechanism 23, so that the welding torch 22 and the end of the manipulator 21 move and buffer in a straight line. During the welding process, the position of the weld can be finely adjusted to compensate for the error caused by the slight deviation of the workpiece position.

[0043] As a preferred embodiment of the floating mechanism 23 provided in this application, it includes a compression spring 231 and a pair of linear guide rails 232. A connecting plate 233 is installed at the end of the robot arm 21, and a connecting plate 234 is installed at the bottom of the welding torch 22. The connecting plate 233 and the connecting plate 234 are slidably connected through the linear guide rails 232.

[0044] The connecting plate 234 has an insertion hole 235. Two parallel linear guide rails 232 are fixedly connected to the connecting plate. A compression spring 231 is fixed to a limiting block welded to the connecting plate 233. The other end of the compression spring 231 is fixedly connected to an insertion block 236. The insertion block 236 is inserted into the insertion hole 235 and is slidably connected to the connecting plate 233.

[0045] The automatic wire feeding unit 3 is used to pull and feed the welding wire to the welding gun 22; in the embodiments of this application, the welding wire is a silver-containing welding wire.

[0046] The high-frequency heater 4 is installed at the output port of the welding torch 22, and the heating end of the high-frequency heater 4 is configured as a clamp. This equipment uses high-frequency heating for brazing. During welding, the clamp-shaped heating end is sleeved on the outside of the inner pipe 01, and a gap of 2-5mm is reserved between the inner wall of the clamp and the inner pipe 01.

[0047] The automatic wire feeding brazing equipment also includes a binocular camera 5, which is used to collect the relative position information of the weld after the inner pipe 01 and the cover plate assembly 02 are combined, so as to achieve accurate identification of the welding position.

[0048] Specifically, in the above technical solution, a positioning block 8 is detachably installed on the top of the tooling plate 6, and a locking plate 03 with positioning holes is provided on the outside of the cover plate assembly 02. The cover plate assembly 02 is installed by positioning and insertion with the positioning block 8 and the positioning hole.

[0049] Specifically, in the above technical solution, a frame 9 is installed at the bottom of the welding station of the chain conveyor 1, and a side push assembly 10 is installed on the top of the frame 9 for positioning the cover plate assembly 02 on the welding station. The frame 9 is made of high-strength aluminum profile. By utilizing the lightweight and high-strength characteristics of aluminum profile, the overall structure achieves high rigidity and good vibration resistance. At the same time, multiple installation interfaces are reserved to facilitate the modular adjustment of the left and right and up and down structures, achieving a balance between lightweight and high rigidity, and facilitating the overall modular adjustment of the equipment.

[0050] In a preferred embodiment of the side-push assembly 10 provided in this application, it includes a cylinder 101 and a pusher block 102. The connecting end of the cylinder 101 is provided with a pneumatic mechanism for providing kinetic energy, and the output end of the cylinder 101 is drively connected to the pusher block 102. The cylinder 101 is made of rubber. When the tooling plate 6 reaches the welding station, the stepper motor stops. At this time, the tooling plate 6 is in position, positioning the compressor component. The cylinder 101 pushes the pusher block 102 to press it against the outside of the cover plate assembly 02, making it tend to a stable state and ensuring the stability of the workpiece position during the welding process.

[0051] Furthermore, in order to better achieve welding positioning, a lifting and positioning mechanism can be selectively installed at the bottom of the tooling plate 6. After the tooling plate 6 enters the welding station and is blocked in place, the lifting and positioning mechanism completes the initial alignment. Subsequently, the output end of the cylinder 101 extends from one side of the double-speed chain of the chain conveyor 1, so that the push block 102 abuts against the side of the compressor, ensuring that the workpiece will not be displaced during the welding process.

[0052] Specifically, in the above technical solution, the connection end of the automatic wire feeding unit 3 is equipped with a temperature sensor to sense the temperature of the welding wire during the wire feeding process. The temperature sensor is communicatively connected to the control host 7.

[0053] Specifically, in the above technical solution, the automatic wire feeding unit 3 is equipped with a wire feeding speed sensor to monitor the wire feeding speed during welding. The automatic wire feeding unit 3 and the high-frequency heater 4 form a closed-loop control system, and the wire feeding speed sensor is communicatively connected to the control host 7. Welding temperature and wire feeding parameters can be monitored and adjusted in real time. Using closed-loop control, the automatic wire feeding unit 3 can achieve precise adjustment of temperature, wire feeding speed, and wire feeding amount. The welding wire is a special silver-containing welding wire, which, in conjunction with the high-frequency heating device, ensures a stable and sufficient molten pool b during the welding process. The wire feeding speed sensor typically generates electrical signals by sensing the movement of the welding wire; these signals are then converted into speed data. For example, some wire feeding speed sensors use a rotary encoder to detect the rotation of the drive gear and calculate the wire feeding speed accordingly. The wire feeding amount is indirectly calculated by accumulating the wire feeding speed and wire feeding time. This method is based on a simple physical formula: Wire feeding amount = Wire feeding speed × Time.

[0054] In practical applications, wire feeding quantity is often monitored and managed through an integrated control system combined with data from wire feed speed sensors. These sensors and systems typically need to work in conjunction with the control system of the welding equipment to achieve precise welding process control. The automatic wire feeding unit 3, in conjunction with its drive mechanism, enables automatic adjustment of wire feeding speed and quantity to adapt to different welding process requirements.

[0055] The automatic wire feeding brazing equipment also includes a control host 7, which is electrically connected to a control panel. The equipment is designed with multiple operating modes, and the parameters of the equipment can be adjusted through the control panel. It can also control the operation or stop of the equipment, meeting the requirements of full automation for mass production, while facilitating manual debugging and troubleshooting.

[0056] When using this equipment:

[0057] The compressor's inner pipe is pre-connected to the cover plate assembly and installed on the tooling plate 6. It is then transported by the chain conveyor 1. When it reaches the welding station, it is stopped. The side push assembly 10 is used to pre-position the compressor component to make it tend to a stable state, ensuring that the workpiece position is stable during the welding process.

[0058] During welding, the binocular camera 5 acquires the relative position information of the weld seam after the inner pipe 01 and the cover plate assembly 02 are combined, and transmits the welding coordinate data to the control host 7. This controls the welding torch 22 and its end-mounted high-frequency heater 4 to move along the running trajectory to the area to be welded, and adjusts the position of the welding torch 22 tip in real time to ensure that the optimal welding angle and distance are maintained throughout the welding process. The welding equipment and control system work together to achieve precise welding process control. The automatic wire feeding unit 3's drive mechanism automatically adjusts the wire feeding speed and amount, forming a weld seam at the contact point between the inner pipe 01 and the cover plate assembly 02, thus completing the welding work.

[0059] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and all such equivalent transformations fall within the protection scope of the present invention.

Claims

1. An automatic wire feeding brazing device for the inner pipe and cover plate assembly of a compressor, characterized in that: include: Chain conveyor (1), top conveyor with tooling plate (6) for mounting cover plate assembly (02); The robot welding assembly (2) includes a manipulator (21) and a welding torch (22), wherein a floating mechanism (23) is installed at the end of the manipulator (21), and the welding torch (22) is mounted on the floating mechanism (23) to allow the welding torch (22) and the end of the manipulator (21) to move and buffer in a straight line. An automatic wire feeding unit (3) is used to pull and feed welding wire to the welding torch (22); A high-frequency heater (4) is installed at the output port of the welding torch (22), and the heating end of the high-frequency heater (4) is configured as a clamp.

2. The automatic wire feeding brazing equipment for the inner pipe and cover plate assembly of a compressor according to claim 1, characterized in that: The floating mechanism (23) includes a compression spring (231) and a pair of linear guide rails (232). The end of the manipulator (21) is equipped with a connecting plate 1 (233), and the bottom of the welding torch (22) is equipped with a connecting plate 2 (234). The connecting plate 1 (233) and the connecting plate 2 (234) are slidably connected through the linear guide rails (232). The second connecting plate (234) has an insertion hole (235). Two parallel linear guide rails (232) are fixedly connected to the first connecting plate (233). A compression spring (231) is fixed on a limiting block welded to the first connecting plate (233). The other end of the compression spring (231) is fixedly connected to an insertion block (236). The insertion block (236) is inserted into the insertion hole (235) and is slidably connected to the first connecting plate (233).

3. The automatic wire feeding brazing equipment for the inner pipe and cover plate assembly of a compressor according to claim 1, characterized in that: The chain conveyor (1) is driven by a stepper motor.

4. The automatic wire feeding brazing equipment for the inner pipe and cover plate assembly of a compressor according to claim 1, characterized in that: It also includes a binocular camera (5) for acquiring the weld position after the inner pipe (01) and the cover plate assembly (02) are combined.

5. The automatic wire feeding brazing equipment for the inner pipe and cover plate assembly of a compressor according to claim 1, characterized in that: The tooling plate (6) is detachably mounted with a positioning block (8), and the cover plate assembly (02) is provided with a locking plate (03) with a positioning hole on the outside. The cover plate assembly (02) is installed by positioning and plugging into the positioning hole through the positioning block (8).

6. The automatic wire feeding brazing equipment for the inner pipe and cover plate assembly of a compressor according to claim 1, characterized in that: The bottom of the welding station of the chain conveyor (1) is equipped with a frame (9), and the top of the frame (9) is equipped with a side push assembly (10) for positioning the cover plate assembly (02) on the welding station. The frame (9) is made of high-strength aluminum profile.

7. The automatic wire feeding brazing equipment for the inner pipe and cover plate assembly of a compressor according to claim 6, characterized in that: The side-push assembly (10) includes a cylinder (101) and a push block (102). The cylinder (101) is provided with a pneumatic mechanism for providing kinetic energy at its connection end, and the output end of the cylinder (101) is connected to the push block (102) in a transmission manner. The cylinder (101) is made of rubber.

8. The automatic wire feeding brazing equipment for the inner pipe and cover plate assembly of a compressor according to claim 1, characterized in that: The connection end of the automatic wire feeding unit (3) is equipped with a temperature sensor to sense the temperature of the welding wire during the wire feeding process.

9. The automatic wire feeding brazing equipment for the inner pipe and cover plate assembly of a compressor according to claim 1, characterized in that: The automatic wire feeding unit (3) is equipped with a wire feeding speed sensor to monitor the wire feeding speed during the welding process, and the automatic wire feeding unit (3) and the high-frequency heater (4) form a closed-loop control system.

10. An automatic wire feeding brazing device for an inner pipe and cover plate assembly of a compressor according to claim 1, characterized in that: It also includes a control host (7), and the connection end of the control host (7) is electrically connected to a control panel.

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