Full-automatic rapid welding device and method for circular seam of special-shaped guide pipe

Abstract

The invention provides a full-automatic rapid welding device for a circular seam of a special-shaped guide pipe. The full-automatic rapid welding device comprises a base; the gantry bracket is arranged on the base; the gantry cross beam is arranged on the gantry bracket; the gantry sliding rail is arranged on the gantry bracket and the gantry cross beam; the automatic welding gun assembly lifting motor is arranged on a gantry sliding rail on the gantry cross beam; the automatic welding gun assembly is connected with the automatic welding gun assembly lifting motor; the flexible clamping and displacement device is arranged on the base, and the flexible clamping and displacement device is used for clamping and displacing the special-shaped guide pipe; the control box assembly is arranged on the base in a sliding mode, and the control box assembly is used for controlling the automatic welding gun assembly lifting motor, the automatic welding gun assembly and the flexible clamping and displacement device; meanwhile, the invention further provides a full-automatic rapid welding method for the circular seam of the special-shaped guide pipe.

Description

Technical Field

[0001] The present application belongs to the field of aviation assembly technology, and in particular relates to a device and method for fully automatic rapid welding of annular seams of special-shaped catheters. Background Art

[0002] The special-shaped duct parts produced in aviation equipment generally have a welding process. During the circumferential seam welding process, they are generally clamped and fixed by means of pressure plates, tooling, etc. and then welded. However, the pressure plates can only fix smaller special-shaped ducts. The parts need to be flipped over many times during welding after fixation. For some parts with too large turning angles, the pressure plates cannot be used to fix them and require manual support. In addition, the welding process is manual and discontinuous, and the breakpoints are prone to cause the welds to be too high or not fully welded. The tooling is specially used and has poor substitutability. The commonly used positioners on the market cannot meet the clamping requirements of special-shaped ducts.

[0003] Therefore, the existing clamping and fixing devices and welding techniques cannot meet the production requirements of small batches, multiple varieties, and various shapes of catheters in aviation equipment. Summary of the invention

[0004] Purpose of the invention: The present invention provides a fully automatic rapid welding device and method for the annular seam of a special-shaped catheter. The device is used for the fixation, displacement and automatic welding of various types of special-shaped parts. The operation is convenient, and the clamping and displacement processes are stable. Except for manual positioning, the entire process can complete automatic displacement and welding through a numerical control program.

[0005] In a first aspect, the present application provides a fully automatic rapid welding device for annular seams of special-shaped catheters, the device comprising:

[0006] Base 1;

[0007] A gantry support 2, arranged on the base;

[0008] A gantry beam 4 is arranged on the gantry support;

[0009] Gantry slide rail 3, arranged on the gantry bracket and the gantry crossbeam;

[0010] An automatic welding gun assembly lifting motor 5 is arranged on the gantry slide rail on the gantry crossbeam;

[0011] An automatic welding gun assembly 6, connected to the automatic welding gun assembly lifting motor;

[0012] A flexible clamping and displacement device 7 is arranged on the base, and is used for clamping and displacing the special-shaped catheter;

[0013] A control box assembly 8 is slidably disposed on the base, and the control box assembly is used to control the automatic welding gun assembly lifting motor 5, the automatic welding gun assembly 6, and the flexible clamping and displacement device 7.

[0014] Preferably, the flexible clamping and displacement device comprises:

[0015] A base, comprising a bottom frame and a vertical plate vertically arranged on the bottom frame, wherein the bottom frame is arranged on the base;

[0016] A position changing motor is arranged on one side of the vertical plate;

[0017] A transmission gear 13 is arranged on the other side of the vertical plate, and the transmission gear is connected to the position changing motor;

[0018] An external gear slewing support bearing 12 is arranged on the other side of the vertical plate, and the external gear slewing support bearing is meshed with the transmission gear;

[0019] A flexible clamping assembly mounting plate 11 is mounted on the external gear slewing support bearing;

[0020] A flexible clamping assembly movement mechanism 10 is mounted on the flexible clamping assembly mounting plate 11;

[0021] The flexible clamping assembly 9 is installed on the flexible clamping assembly movement mechanism, and the flexible clamping assembly is used to clamp the special-shaped catheter.

[0022] Preferably, a guide rail is provided on the bottom frame; the control box assembly 8 comprises:

[0023] A control box 15 is arranged on the guide rail;

[0024] The positioning device 14 is arranged on one side of the control box 15 .

[0025] Preferably, the automatic welding gun assembly 6 consists of an automatic wire feeding welding gun and a fixing rod, and the automatic wire feeding welding gun can start and stop welding through a numerical control program.

[0026] Preferably, the positioning device 14 is composed of a synchronous belt 14 - 1 and a positioning block 14 - 2 , and the positioning block can be positioned and returned to zero position by a numerical control program through the synchronous belt.

[0027] Preferably, the flexible clamping assembly 9 comprises:

[0028] The profiling needle fixing box 9-1 has a long side plate and a groove-shaped frame, and a round hole is opened on the back of the groove-shaped frame;

[0029] A profiling needle fixing pad 9-2 is arranged on the inner side of the bottom of the groove-shaped frame;

[0030] A profiling needle fixing cylinder 9-3 is arranged outside the bottom of the grooved frame;

[0031] The profiling needle cluster 9-4 is arranged in the groove-shaped frame. The profiling needle cluster is composed of a certain number of profiling needles 9-5. The ends of the profiling needles have notches that match the round holes on the back of the groove-shaped frame.

[0032] Preferably, the contoured needle 9 - 5 is composed of a shaft with a notch, a spring and a needle body. The needle body is a hollow structure, and the shaft with a notch can be inserted into the needle body to form an automatic rebound structure through the spring.

[0033] Preferably, the flexible clamping assembly motion mechanism 10 is composed of two sets of worm gears driven by motors and two sets of lead screws, which are installed on the flexible clamping assembly mounting plate 11 through a fixed block. The two sets of lead screws are equipped with flexible clamping assemblies 9, and the movement of the flexible clamping assembly on the two sets of lead screws is controlled by a CNC program.

[0034] In a second aspect, the present application also provides a method for fully automatic rapid welding of annular seams of special-shaped catheters, the method comprising:

[0035] Determine whether each component is at zero position, that is, the gantry beam is at the rear end, the welding gun of the automatic welding gun assembly is flush with the lower end of the lifting motor of the automatic welding gun assembly, the control box assembly is at the front end of the slide rail on the flexible clamping and displacement device, farthest from the flexible clamping assembly, and the positioning device on the control box assembly is at the bottom;

[0036] According to the shape of the part and the area to be processed, the part clamping position is determined, the part is placed in the area to be clamped, and the CNC program is started. The control box assembly is moved forward by the screw at the bottom of the flexible clamping and displacement device, so that the positioning device on the control box assembly reaches the circumferential welding position of the part to be welded. The positioning device rises to ensure that its positioning block is concentric with the displacement circle center of the flexible clamping assembly, and the part circumferential seam is fitted with the positioning block. The flexible clamping assembly movement mechanism begins to tighten the flexible clamping assembly, and the contour of the catheter is contoured and clamped by the contouring needle on the flexible clamping assembly. While clamping the part, the contouring needles up, down, left, and right are used to limit the position, ensuring that the part is clamped firmly and does not shake.

[0037] After the parts are fixed, the positioning device descends to zero position, the control box assembly returns to zero position, and welding work begins. The gantry beam is controlled by the CNC program to reach the top of the weld position, and the automatic welding gun assembly lifting motor controls the automatic welding gun assembly to descend to the weld to be welded. The transmission gear drives the external gear slewing support bearing to rotate, thereby driving the part weld to shift position, and the automatic welding gun assembly starts CNC welding at the same time;

[0038] After welding is completed, the automatic welding gun assembly rises to the zero position through the automatic welding gun assembly lifting motor, and the flexible clamping assembly movement mechanism drives the flexible clamping assembly to move to both sides, the parts are released from the clamping state, and the parts are taken out.

[0039] Beneficial technical effects of this application:

[0040] The CNC contoured clamping structure is used to clamp parts of different shapes. During the clamping process, it is only necessary to put the part to be clamped into the clamping area to realize CNC clamping, and then the external gear slewing support bearing is used for CNC displacement. The automatic wire feeding welding gun is in place through the CNC program for synchronous welding. In the whole process, except for manual support of parts, the clamping, displacement and welding of parts are automatically completed through the control program. The labor intensity is low, the speed is adjustable, the operation is stable, and it can be applied to catheters of different diameters and other parts of different shapes, with strong versatility. After the program is set, it can be called at any time through the operating table, and the whole process can be completed by a single person. The operation process is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic diagram of the structure of the device of the present invention during welding;

[0042] Figure 2 It is a schematic diagram of the flexible clamping assembly of the present invention;

[0043] Figure 3 It is a schematic diagram of the main frame and displacement mechanism of the flexible clamping and displacement device of the present invention;

[0044] Figure 4 It is a schematic diagram of the main frame of the flexible clamping and displacement device and the back of the displacement mechanism of the present invention;

[0045] Figure 5 It is a schematic diagram of the control box assembly of the present invention;

[0046] Figure 6 It is a schematic diagram of the zero position of the device of the present invention;

[0047] Figure 7 It is a schematic diagram of the flexible clamping device of the present invention;

[0048] Figure 8 It is a schematic diagram of a profiling needle on a flexible clamping device of the present invention;

[0049] Fig. 9 It is a schematic diagram of the positioning device of the present invention;

[0050] Fig.10 It is a schematic diagram of the clamping state of the present invention;

[0051] Among them, 1-base, 2-gantry bracket, 3-gantry slide rail, 4-gantry beam, 5-automatic welding gun assembly lifting motor, 6-automatic welding gun assembly, 7-flexible clamping and displacement device, 8-control box assembly, 9-flexible clamping assembly, 9-1 is the profiling needle fixing box, 9-2 is the profiling needle fixing pad, 9-3 is the profiling needle fixing cylinder, 9-4 is the profiling needle cluster, 9-5 is the profiling needle, 10-flexible clamping assembly motion mechanism, 11-flexible clamping assembly mounting plate, 12-external gear slewing support bearing, 13-transmission gear, 13-1 is the transmission gear motor, 14-positioning device, 14-1 synchronous belt and 14-2 positioning block, 15-control box. DETAILED DESCRIPTION

[0052] See also Figure 1 The present application provides a fully automatic rapid welding device for annular seams of special-shaped catheters, including a base 1, a gantry bracket 2, a gantry slide rail 3, a gantry beam 4, an automatic welding gun assembly lifting motor 5, an automatic welding gun assembly 6, a flexible clamping and displacement device 7, a control box assembly 8, a flexible clamping assembly 9, a profiling needle fixing box 9-1, a profiling needle fixing pad 9-2, a profiling needle fixing cylinder 9-3, a profiling needle cluster 9-4, a profiling needle 9-5, a flexible clamping assembly motion mechanism 10, a flexible clamping assembly mounting plate 11, an external gear slewing support bearing 12, a transmission gear 13, a transmission gear motor 13-1, a positioning device 14, a synchronous belt 14-1, a positioning block 14-2, and a control box 15.

[0053] Among them, the base 1 is the foundation of the device, on which a universal gantry and a flexible clamping and displacement device 7 are installed. The universal gantry consists of a gantry bracket 2, a gantry slide rail 3, and a gantry beam 4. The gantry beam 4 moves back and forth on the gantry bracket through a motor; in addition, the slide rail types on the device are all universal slide rails of the gantry slide rail 3 style.

[0054] Among them, the automatic welding gun assembly lifting motor 5 realizes the welding gun lifting function by a synchronous belt. It is installed on the gantry slide rail on the gantry beam 4 and moves left and right through the motor.

[0055] Among them, the automatic welding gun assembly 6 is composed of an automatic wire feeding welding gun and a fixed rod, and the fixed rod is installed on the synchronous belt of the automatic welding gun assembly lifting motor 5. The automatic wire feeding welding gun can start and stop welding through a numerical control program.

[0056] The flexible clamping and displacement device 7 is composed of a flexible clamping component 9 ( Figure 2 As shown), a flexible clamping assembly movement mechanism 10, a flexible clamping assembly mounting plate 11, an external gear slewing support bearing 12, and a transmission gear 13 are installed on a base ( Figure 3The flexible clamping assembly 9 and the flexible clamping assembly movement mechanism 10 are installed on the flexible clamping assembly mounting plate 11, and then fixed on the external gear slewing support bearing 12. The transmission gear 13 is installed under the external gear slewing support bearing 12, and the transmission gear motor 13-1 ( Figure 4 The transmission gear 13 (as shown) realizes the rotation of the external gear slewing support bearing 12.

[0057] Among them, the flexible clamping component 9 ( Figure 7 The profiling needle cluster 9-4 is composed of a certain number of profiling needles 9-5 ( Figure 8 The bottom circular groove of the profiling needle 9-5 is inserted into the back opening of the profiling needle fixing box 9-1, and then the profiling needle fixing pad 9-2 is installed on the inner side of the bottom of the profiling needle fixing box 9-1, and the profiling needle fixing cylinder 9-3 is installed on the outer side. The pneumatic top shaft of the profiling needle fixing cylinder 9-3 controls the tightening and loosening of the profiling needle cluster 9-4 through the CNC program. Among them, the control box component 8 ( Figure 5 The positioning device 14 (shown in FIG. 1 ) is composed of a positioning device 14 and a control box 15, which is installed on the slide rail of the bottom frame of the flexible clamping and displacement device 7, and moves forward and backward through the lead screw and motor assembly on the bottom frame of the flexible clamping and displacement device 7. Fig. 9 As shown in the figure, it is composed of a synchronous belt 14-1 and a positioning block 14-2. The positioning block 14-2 can be replaced according to the diameter of the catheter. The control box 15 is the control console of the whole system.

[0058] In other embodiments of the present application, the present invention provides a fully automatic and rapid welding device and method for annular seams of special-shaped catheters. The device comprises a base 1, a gantry bracket 2, a gantry slide rail 3, a gantry beam 4, an automatic welding gun assembly lifting motor 5, an automatic welding gun assembly 6, a flexible clamping and displacement device 7, a control box assembly 8, a flexible clamping assembly 9, a flexible clamping assembly movement mechanism 10, a flexible clamping assembly mounting plate 11, an external gear slewing support bearing 12, a transmission gear 13, a positioning device 14, and a control box 15. The specific operation and welding method are as follows:

[0059] First, determine whether each component is at zero position ( Figure 6 As shown), that is, the gantry beam 4 is at the rear end, the welding gun of the automatic welding gun assembly 6 is flush with the lower end of the automatic welding gun assembly lifting motor 5, the control box assembly 8 is at the front end of the slide rail on the flexible clamping and displacement device 7 (the farthest end from the flexible clamping assembly 9), and the positioning device 14 on the control box assembly 8 is at the bottom.

[0060] Then, according to the shape of the part and the part to be processed, the part clamping position is determined, the part is placed in the area to be clamped, and the CNC program is started. The control box assembly 8 is moved forward by the screw at the bottom of the flexible clamping and displacement device 7, so that the positioning device 14 on the control box assembly 8 reaches the annular welding position of the part to be welded. The positioning device 14 is raised to ensure that its positioning block is concentric with the displacement circle center of the flexible clamping assembly 9, and the annular seam of the part is fitted with the positioning block. The flexible clamping assembly movement mechanism 10 begins to tighten the flexible clamping assembly 9, and the contour of the catheter is contoured and clamped by the contouring needle on the flexible clamping assembly 9. While clamping the part, the contouring needles up, down, left and right are used to limit the position, ensuring that the part is clamped firmly and does not shake.

[0061] After the parts are fixed, the positioning device 14 is lowered to zero position, the control box assembly 8 returns to zero position, and the welding work starts. The gantry beam 4 is controlled by the CNC program to reach the position just above the weld, the automatic welding gun assembly lifting motor 5 controls the automatic welding gun assembly 6 to descend to the weld to be welded, the transmission gear 13 drives the external gear slewing support bearing 12 to rotate, thereby driving the part weld to shift position, and the automatic welding gun assembly 6 starts CNC welding.

[0062] After welding is completed, the automatic welding gun assembly 6 is raised to the zero position by the automatic welding gun assembly lifting motor 5, and the flexible clamping assembly movement mechanism 10 drives the flexible clamping assembly 9 to move to both sides, the parts are released from the clamping state, and the parts are taken out.

[0063] In other embodiments of the present application, the present invention provides a device and method for fully automatic and rapid clamping and displacement of annular seams of special-shaped catheters. The device comprises a flexible clamping and displacement device 7, a control box assembly 8, a flexible clamping assembly 9, a profiling needle fixing box 9-1, a profiling needle fixing pad 9-2, a profiling needle fixing cylinder 9-3, a profiling needle cluster 9-4, a profiling needle 9-5, a flexible clamping assembly movement mechanism 10, a flexible clamping assembly mounting plate 11, an external gear slewing support bearing 12, a transmission gear 13, a transmission gear motor 13-1, a positioning device 14, a synchronous belt 14-1 and a positioning block 14-2, and a control box 15. The specific operation and clamping method are as follows:

[0064] Determine whether all devices are at zero position, that is, the control box assembly 15 is at the leftmost side of the device slide rail, and the centering block 14-2 is at the bottom end of the synchronous belt 14-1.

[0065] Then according to the shape of the weld position of the part ( Fig.10The center positioning block is selected, and the CNC program is set after the center position is determined. After the control box assembly 15 drives the centering block 14-2 to move to the appropriate position according to the CNC program, the centering device 14-2 rises to the position to be clamped, and the operator fits the part annular seam to the positioning block, and the other end of the part is inserted into the flexible clamping and displacement device 7. The CNC tightens the flexible clamping assembly 9, and the spring in the contour needle cluster 9-4 is squeezed by the part to shrink, thereby forming the outer contour of the part. After the part is fixed and does not shake, the centering block 14-2 descends. During the descent, observe whether the part moves. If there is no movement, the clamping is completed. If there is movement, repeat the above steps. After the clamping is completed, the control box assembly 15 returns to its position.

[0066] Finally, pre-displacement is performed, and the transmission gear 13 is controlled to rotate through the CNC program, and then the external gear slewing support bearing 12 is rotated to check whether the part is loose during rotation and whether it can rotate 360°. If the requirements are met, subsequent welding work can be carried out.

Claims

1. A fully automatic rapid welding device for annular seams of special-shaped catheters, characterized in that: The device comprises: Base (1); A gantry support (2) is arranged on the base; A gantry crossbeam (4), arranged on the gantry support; A gantry slide rail (3) is arranged on the gantry support and the gantry crossbeam; An automatic welding gun assembly lifting motor (5) is arranged on a gantry slide rail on the gantry crossbeam; An automatic welding gun assembly (6), connected to the automatic welding gun assembly lifting motor; A flexible clamping and displacement device (7) is arranged on the base, and is used for clamping and displacing the special-shaped catheter; A control box assembly (8) is slidably arranged on the base, and the control box assembly is used to control the automatic welding gun assembly lifting motor (5), the automatic welding gun assembly (6), and the flexible clamping and displacement device (7).

2. The device according to claim 1, characterized in that The flexible clamping and displacement device comprises: A base, comprising a bottom frame and a vertical plate vertically arranged on the bottom frame, wherein the bottom frame is arranged on the base; A position changing motor is arranged on one side of the vertical plate; A transmission gear (13) is arranged on the other side of the vertical plate, and the transmission gear is connected to the position changing motor; An external gear slewing support bearing (12) is arranged on the other side of the vertical plate, and the external gear slewing support bearing is meshed with the transmission gear; A flexible clamping assembly mounting plate (11) mounted on the external gear slewing support bearing; A flexible clamping assembly movement mechanism (10) mounted on the flexible clamping assembly mounting plate (11); A flexible clamping assembly (9) is mounted on the flexible clamping assembly movement mechanism, and the flexible clamping assembly is used to clamp a special-shaped catheter.

3. The device according to claim 2, characterized in that The bottom frame is provided with a guide rail; the control box assembly (8) comprises: A control box (15) is arranged on the guide rail; A positioning device (14) is arranged on one side of the control box (15).

4. The device according to claim 3, characterized in that The automatic welding gun assembly (6) consists of an automatic wire feeding welding gun and a fixing rod. The automatic wire feeding welding gun can start and stop welding through a numerical control program.

5. The device according to claim 3, characterized in that The positioning device (14) is composed of a synchronous belt (14-1) and a positioning block (14-2), and the positioning block can start positioning and return to zero position according to a numerical control program through the synchronous belt.

6. The device according to claim 3, characterized in that The flexible clamping assembly (9) comprises: A profiling needle fixing box (9-1) has a long side plate and a groove-shaped frame, and a round hole is opened on the back of the groove-shaped frame; A profiling needle fixing pad (9-2) is arranged on the inner side of the bottom of the groove-shaped frame; A profiling needle fixing cylinder (9-3) is arranged outside the bottom of the groove-shaped frame; A profiling needle cluster (9-4) is arranged in the groove-shaped frame. The profiling needle cluster is composed of a certain number of profiling needles (9-5). The ends of the profiling needles are provided with notches to match the round holes at the back of the groove-shaped frame.

7. The device according to claim 3, characterized in that The profiling needle (9-5) is composed of a shaft with a notch, a spring and a needle body. The needle body is a hollow structure. The shaft with the notch can be inserted into the needle body to form an automatic rebound structure through the spring.

8. The device according to claim 3, characterized in that The flexible clamping assembly movement mechanism (10) is composed of two groups of worm gears driven by motors and two groups of lead screws, which are installed on the flexible clamping assembly mounting plate (11) through a fixing block. The two groups of lead screws are equipped with flexible clamping assemblies (9), and the movement of the flexible clamping assembly on the two groups of lead screws is controlled by a numerical control program.

9. A method for fully automatic rapid welding of annular seams of special-shaped catheters, characterized in that: The method comprises: Determine whether each component is at zero position, that is, the gantry beam is at the rear end, the welding gun of the automatic welding gun assembly is flush with the lower end of the lifting motor of the automatic welding gun assembly, the control box assembly is at the front end of the slide rail on the flexible clamping and displacement device, farthest from the flexible clamping assembly, and the positioning device on the control box assembly is at the bottom; According to the shape of the part and the part to be processed, the part clamping position is determined, the part is placed in the area to be clamped, and the CNC program is started. The control box assembly is moved forward by the lead screw at the bottom of the flexible clamping and displacement device, so that the positioning device on the control box assembly reaches the annular seam welding position of the part to be welded. The positioning device rises to ensure that its positioning block is concentric with the displacement circle center of the flexible clamping assembly, and the annular seam of the part is fitted with the positioning block. The flexible clamping assembly movement mechanism begins to tighten the flexible clamping assembly, and the contour of the catheter is contoured and clamped by the contouring needle on the flexible clamping assembly. While clamping the part, the contouring needles up, down, left, and right are used to limit the position, ensuring that the part is clamped firmly and does not shake. After the parts are fixed, the positioning device descends to zero position, the control box assembly returns to zero position, and welding work begins. The gantry beam is controlled by the CNC program to reach the top of the weld position, and the automatic welding gun assembly lifting motor controls the automatic welding gun assembly to descend to the weld to be welded. The transmission gear drives the external gear slewing support bearing to rotate, thereby driving the part weld to shift position, and the automatic welding gun assembly starts CNC welding at the same time; After welding is completed, the automatic welding gun assembly rises to the zero position through the automatic welding gun assembly lifting motor, and the flexible clamping assembly movement mechanism drives the flexible clamping assembly to move to both sides, the parts are released from the clamping state, and the parts are taken out.

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