Automobile elbow welding device and using method

Abstract

The invention relates to the field of automobile elbow welding, in particular to an automobile elbow welding device and a using method.The automobile elbow welding device comprises a supporting seat, supporting cushion frames are fixedly connected to the two sides of the lower portion of the supporting seat, and supporting cushion telescopic rods are symmetrically and fixedly connected to the middle of the lower portion of the supporting seat; the two supporting cushion telescopic rods are arranged between the two supporting cushion frames, and an electric telescopic rod is fixedly connected to the upper portion of the supporting base. The automobile elbow welding device is composed of a positioning mechanism, a clamping mechanism and a buffering mechanism. After an automobile bent pipe is placed on the tops of the two supporting cushion frames, an electric telescopic rod is started to drive an adjusting frame to move downwards to clamp the automobile bent pipe, under the action of a positioning mechanism, the upper ends of two L-shaped positioning plates move relatively to press and pre-position the end of the automobile bent pipe, and at the moment, the automobile bent pipe is arranged between the two supporting cushion frames in the middle; and in the simultaneous welding process of the two ends of the automobile elbow, the placement position precision of the automobile elbow is ensured, and the welding quality is improved.

Description

Technical Field

[0001] The present invention relates to the field of automobile elbow welding, and in particular to an automobile elbow welding device and a use method thereof. Background Art

[0002] During the welding process of automobile elbows, due to the uniqueness of the shape of the elbow and the shape of the bent plate welded with it, the stability of the elbow clamping and positioning is one of the important factors to ensure the quality of the elbow welding.

[0003] An existing patent (publication number: CN106514104A) discloses an automotive pipe elbow welding device, comprising a frame, a workbench mounted in the middle of the frame, a welding gun assembly mounted on top of the frame, and a welding positioning fixture mounted on the workbench. During the implementation of this solution, the inventors discovered the following unresolved issues in the prior art: 1. To improve welding efficiency, after the automotive pipe elbow is fixed, two manipulators are typically used to simultaneously weld both ends of the elbow. However, this device struggles to effectively center the two ends of the elbow during welding, impacting the quality of the simultaneous weld. Summary of the Invention

[0004] The purpose of the present invention is to provide an automobile pipe bend welding device and method of use to solve the problems raised in the above-mentioned background technology: 1. During use, some existing automobile pipe bend welding devices have difficulty effectively centering the ends of the pipe bend in the center of the welding device. To achieve the above-mentioned purpose, the present invention provides the following technical solutions: An automobile pipe bend welding device includes a support base, wherein both sides of the lower portion of the support base are fixedly connected to support brackets, and the middle position of the lower portion of the support base is symmetrically fixedly connected to support telescopic rods, and the two support telescopic rods are arranged between the two support brackets; The upper part of the support base is fixedly connected to the electric telescopic rod, the upper part of the support base is vertically provided with a slide groove, the upper part of the inner wall of the slide groove is slidably connected to the main slider, the front end of the main slider is fixedly connected to the adjustment frame, and one end of the adjustment frame is fixedly connected to the telescopic end of the electric telescopic rod; A positioning mechanism is movably connected between the surface of the support frame and the surface of the support seat, and the two ends of the upper part of the positioning mechanism correspond one to one with the left and right sides of the adjustment frame. A clamping mechanism is movably connected between the lower part of the main slider and the support telescopic rod; The bottom of the electric telescopic rod is movably connected to a buffer mechanism, and the buffer mechanism includes a through hole, which is vertically opened at the movable end of the electric telescopic rod. The interior of the through hole is slidably connected to an upper clamping rod, and the upper part of the upper clamping rod is movably sleeved with a buffer spring, and the top of the buffer spring overlaps the surface of the electric telescopic rod.

[0005] Preferably, the positioning mechanism includes an adjustment frame, the adjustment frame is movably sleeved on the lower part of the support frame, and the bottom of the adjustment frame is slidably connected to the top surface of the lower part of the support seat; Both sides of the lower part of the support seat are fixedly connected with an articulated frame, and the upper part of the articulated frame is hinged with an L-shaped positioning plate, and the two L-shaped positioning plates correspond to the two adjustment frames one by one. The lower part of the L-shaped positioning plate is provided with a positioning groove, and the lower part of the L-shaped positioning plate is movably connected to the side wall of the adjacent adjustment frame through the positioning groove; Both sides of the lower part of the support seat are provided with through slots, and the interior of the through slots is slidably connected to a U-shaped slide, the front end of the U-shaped slide is fixedly connected to a connecting rod, one end of the connecting rod is fixedly connected to a linkage plate, and the two linkage plates correspond to the two adjustment frames one by one, and the linkage plates are arranged between the bottom of the adjustment frame and the surface of the support seat, and a linkage oblique slot is provided on the top of the linkage plate, and the bottom of the adjustment frame is fixedly connected to a linkage pin, and the bottom of the adjustment frame is slidably connected to the interior of the corresponding linkage oblique slot through the linkage pin; Both sides of the upper part of the support seat are vertically provided with movable grooves, and the two movable grooves correspond to the two through grooves one by one. A vertical hole is provided between the inner bottom surface of the movable groove and the top of the corresponding through groove. A T-shaped pad rod is vertically slidably connected to the inside of the movable groove, and a compression spring is movably connected between the upper part of the T-shaped pad rod and the inner bottom surface of the movable groove. The bottom of the T-shaped pad rod passes through the corresponding vertical holes and extends to the middle position of the U-shaped slide plate. The lower part of the T-shaped pad rod is symmetrically fixedly connected with a sliding pin, and the surface of the U-shaped slide plate is provided with a pin groove that matches the sliding pin; Z-shaped guide grooves are provided on both sides of the inner wall of the movable groove, and a guide block is slidably connected between the two Z-shaped guide grooves. The bottom of the guide block is overlapped on the top of the corresponding T-shaped pad rod. A groove is provided on the top of the guide block, and a pressure block is rotatably connected between the two sides of the inner wall of the groove. The two pressure blocks correspond one to one to the left and right sides of the adjustment frame.

[0006] Preferably, waist-shaped grooves are provided on both sides of the inner wall of the positioning groove, and positioning slide bars are fixedly connected to the opposite sides of the two adjustment frames, and one end of the positioning slide bar is slidably connected to the inside of the adjacent waist-shaped groove.

[0007] Preferably, the groove is configured as a ninety-degree groove, and a torsion spring is fixedly connected between the inner wall of the groove and the side wall of the pressing block.

[0008] Preferably, one end of the L-shaped positioning plate away from the adjustment frame is fixedly connected to a toothed plate.

[0009] Preferably, the clamping mechanism includes a pressure rod, which is vertically slidably connected to the inside of the slide groove, the top of the pressure rod is fixedly connected to the bottom of the main slider, the lower part of the inner wall of the slide groove is slidably connected to a slave slider that cooperates with the pressure rod, the front end of the slave slider is fixedly connected to an adjusting rod, and both ends of the adjusting rod are fixedly connected to hinge blocks, and the two hinge blocks correspond one to one to the two support pad telescopic rods; The top of the support telescopic rod is fixedly connected to the lower clamping rod, and the movable end of the support telescopic rod is symmetrically fixedly connected to the connecting pin, and a U-shaped connecting frame is hinged between the two connecting pins. One end of the U-shaped connecting frame is hinged to the inside of the corresponding hinge block, and the middle part of the U-shaped connecting frame is hinged to a support rod, and the bottom of the support rod is fixedly connected to the lower surface of the support seat.

[0010] Preferably, a hinge groove is formed at the top of the support rod, a hinge rod is fixedly connected between the two sides of the inner wall of the hinge groove, and the middle part of the U-shaped connecting frame is rotatably connected to the middle part of the hinge rod; The U-shaped connecting frame is symmetrically provided with a connecting groove at one end close to the supporting telescopic rod, and the U-shaped connecting frame is slidably connected to the surface of the connecting pin through the connecting groove; The hinge block is configured as a U-shaped block, with transverse grooves on both sides of the hinge block. One end of the U-shaped connecting frame away from the support telescopic rod is symmetrically fixedly connected to a transverse rod, and the U-shaped connecting frame is slidably connected to the inside of the corresponding transverse groove through the transverse rod.

[0011] A method for using an automobile elbow welding device comprises the following steps: When the car is in use, the two L-shaped positioning plates at the bottom of the support seat are rotated on the surface of the hinged frame with the hinged L-shaped positioning plates at the end of the adjusting frame. At this time, the two L-shaped positioning plates at the lower part of the support seat are synchronously deflected relative to each other and pressed against the two end positions of the car bend pipe, thereby pre-positioning the car bend pipe at the top of the two support seats. At the same time, the upper clamping rod at the bottom of the electric telescopic rod also moves downward and presses against the top of the car bend pipe. S2. As the adjustment frame continues to move downward with the pressure block and the guide block, the guide block moves to the middle position of the Z-shaped guide groove. At this time, the guide block moves the pressure block toward the inside of the movable groove, so that the pressure block releases the contact with the end of the adjustment frame. At this time, the compression spring moves upward with the T-shaped pad to reset, so that the U-shaped slide pulls the linkage plate to reset through the connecting rod. Then, the adjustment frame and the linkage plate cooperate to reset and release the clamping of the automobile elbow with the L-shaped positioning plate. S3. Then the main slider with the pressure rod continues to move downward inside the slide and presses against the top of the slave slider, so that the slave slider is pressed and moves the adjustment rod and the hinge block downward. Under the action of the lever principle, the U-shaped connecting frame rotates with the middle of the support rod as the axis point. The U-shaped connecting frame and the movable end of the supporting telescopic rod rise, so that the lower clamping rod moves toward the direction of the automobile elbow. The automobile elbow is clamped during the cooperation between the upper clamping rod and the lower clamping rod. Then the electric telescopic rod is turned off to maintain the current state. Finally, the welding robot performs welding operations on both ends of the elbow.

[0012] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, through the coordinated use of components such as the support frame, the adjustment frame and the positioning mechanism, after the automobile bent pipe is placed on the top of the two support frames, the electric telescopic rod is started to move the adjustment frame downward to clamp the automobile bent pipe. Under the action of the positioning mechanism, the upper ends of the two L-shaped positioning plates are moved relative to each other to press and pre-position the end of the automobile bent pipe. At this time, the automobile bent pipe is centrally arranged between the two support frames, ensuring the position accuracy of the automobile bent pipe during the simultaneous welding process of the two ends of the automobile bent pipe, thereby improving the welding quality.

[0013] In the present invention, through the coordinated use of components such as the Z-shaped guide groove, the guide block and the compression spring, when the position accuracy of the automobile bend is automatically adjusted, the upper clamping rod moves downward along with the electric telescopic rod and presses against the top of the automobile bend for pre-fixation. At this time, under the action of the Z-shaped guide groove, the downward-moving guide block brings the pressure block to release the contact with the adjustment frame, and the compression spring brings the T-shaped pad rod to rise, so that the L-shaped positioning plate automatically resets and releases the pressing state, thereby facilitating the welding operation at the positioned end position of the automobile bend.

[0014] In the present invention, through the coordinated use of components such as the main slider, the positioning mechanism and the clamping mechanism, when the electric telescopic rod moves downward with the adjustment frame and the main slider to adjust the position of the automobile bent pipe, under the action of the clamping mechanism, the upper clamping rod and the lower clamping rod cooperate to clamp the automobile bent pipe between the two support frames. During the entire welding and clamping process, the position adjustment, pre-fixing and clamping operations are realized in sequence, thereby improving the convenience of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front view of the support base and the L-shaped positioning plate of the present invention; Figure 2A side view of the support base and the L-shaped positioning plate of the present invention; Figure 3 A side sectional view of a partial position of the support seat and the through slot of the present invention; Figure 4 For the present invention Figure 3 A magnified view of the structure at center A; Figure 5 For the present invention Figure 3 A magnified view of the structure at B in the middle; Figure 6 It is a left sectional view of the partial position of the through groove and the movable groove of the present invention; Figure 7 It is a side sectional view of the local position of the support seat and the pressure rod of the present invention; Figure 8 A three-dimensional diagram of the partial positions of the U-shaped slide and the linkage plate of the present invention; Figure 9 It is a left sectional view of the local position of the movable groove and the Z-shaped guide groove of the present invention; Figure 10 It is a cross-sectional view of the local position of the upper clamping rod and the electric telescopic rod of the present invention.

[0016] In the figure: 1. Support base; 2. Support frame; 3. Support telescopic rod; 4. Electric telescopic rod; 5. Slide; 6. Main slide; 7. Adjustment frame; 8. Positioning mechanism; 801. Adjustment frame; 802. Articulated frame; 803. L-shaped positioning plate; 804. Positioning slot; 805. Through slot; 806. U-shaped slide; 807. Connecting rod; 808. Linkage plate; 809. Linkage inclined slot; 810. Linkage pin; 811. Movable slot; 812. Vertical hole; 813. T-shaped pad Rod; 814, compression spring; 815, sliding pin; 816, pin groove; 817, Z-shaped guide groove; 818, guide block; 819, groove; 820, pressure block; 9, clamping mechanism; 901, pressure rod; 902, slave slider; 903, adjustment rod; 904, hinge block; 905, lower clamping rod; 906, connecting pin; 907, U-shaped connecting frame; 908, support rod; 10, buffer mechanism; 101, through hole; 102, upper clamping rod; 103, buffer spring. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0018] See also Figures 1 to 10The present invention provides a technical solution: a device for welding automobile elbow pipes, comprising a support base 1, with support frames 2 fixedly connected to both sides of the lower portion of the support base 1, and support telescopic rods 3 symmetrically fixedly connected to the middle position of the lower portion of the support base 1, with the two support telescopic rods 3 being arranged between the two support frames 2. It should be noted that a rubber strip is provided on the top of the support frame 2, which has a certain damping effect to ensure the stability of the automobile elbow when placed on the support frame 2; the support telescopic rod 3 is configured as a spring telescopic rod, which extends through the support telescopic rod 3 and clamps the bottom of the automobile elbow with a lower clamping rod 905.

[0019] The upper portion of the support base 1 is fixedly connected to an electric telescopic rod 4. A slide groove 5 is vertically defined in the upper portion of the support base 1. A main slider 6 is slidably connected to the upper portion of the inner wall of the slide groove 5. The front end of the main slider 6 is fixedly connected to an adjustment frame 7. One end of the adjustment frame 7 is fixedly connected to the telescopic end of the electric telescopic rod 4. It should be noted that the adjustment frame 7 is configured as a T-shaped frame, and one end of the middle portion of the adjustment frame 7 is fixedly connected to a mounting ring. The adjustment frame 7 is fixedly connected to the telescopic end of the electric telescopic rod 4 via the mounting ring.

[0020] A positioning mechanism 8 is movably connected between the surface of the support frame 2 and the surface of the support seat 1. The two ends of the upper part of the positioning mechanism 8 correspond one to one to the left and right sides of the adjustment frame 7. A clamping mechanism 9 is movably connected between the lower part of the main slider 6 and the support telescopic rod 3.

[0021] The bottom of the electric telescopic rod 4 is movably connected to a buffer mechanism 10. The buffer mechanism 10 includes a through hole 101, which is vertically defined at the movable end of the electric telescopic rod 4. An upper clamping rod 102 is slidably connected to the interior of the through hole 101. A buffer spring 103 is movably sleeved on the upper portion of the upper clamping rod 102, and the top of the buffer spring 103 overlaps the surface of the electric telescopic rod 4. It should be noted that the buffer spring 103 cooperates with the upper clamping rod 102, allowing the upper clamping rod 102 to cooperate with the positioning mechanism 8 to pre-fix the vehicle elbow after the adjusted position as the upper clamping rod 102 moves downward with the electric telescopic rod 4. The elasticity of the compressed buffer spring 103 ensures the stability of the upper clamping rod 102 as it presses against the vehicle elbow.

[0022] In this embodiment, Figures 1 to 10 As shown, the positioning mechanism 8 includes an adjustment frame 801, which is movably sleeved on the lower portion of the support frame 2. The bottom of the adjustment frame 801 is slidably connected to the top surface of the lower portion of the support base 1. It should be noted that a movable groove is formed on the top surface of the lower portion of the support base 1, and a movable block is fixedly connected to the bottom of the adjustment frame 801. The adjustment frame 801 is slidably connected to the interior of the movable groove via the movable block. The movable groove and the movable block cooperate to ensure the stability of the adjustment frame 801 during translation.

[0023] Both sides of the lower part of the support base 1 are fixedly connected with an articulated frame 802, and the upper part of the articulated frame 802 is hinged with an L-shaped positioning plate 803. The two L-shaped positioning plates 803 correspond to the two adjustment frames 801 one by one. The lower part of the L-shaped positioning plate 803 is provided with a positioning groove 804, and the lower part of the L-shaped positioning plate 803 is movably connected to the side wall of the adjacent adjustment frame 801 through the positioning groove 804. It should be noted that the two L-shaped positioning plates 803 are symmetrically arranged with respect to the axis position of the support base 1. When the two L-shaped positioning plates 803 are synchronously deflected, the two ends of the automobile elbow can be positioned to ensure the welding position accuracy of the two ends of the automobile elbow. The welding of the automobile elbow and the straight pipe is usually performed by a welding robot. The welding robot here is a prior art and will not be described in detail.

[0024] Both sides of the lower portion of the support base 1 are provided with through slots 805, and a U-shaped slide 806 is slidably connected inside the through slots 805. A connecting rod 807 is fixedly connected to the front end of the U-shaped slide 806, and a linkage plate 808 is fixedly connected to one end of the connecting rod 807. The two linkage plates 808 correspond one to one with the two adjustment frames 801. The linkage plates 808 are arranged between the bottom of the adjustment frame 801 and the surface of the support base 1. A linkage bevel 809 is provided on the top of the linkage plates 808. A linkage pin 810 is fixedly connected to the bottom of the adjustment frame 801. The bottom of the adjustment frame 801 is slidably connected to the inside of the corresponding linkage bevel 809 via the linkage pin 810. It should be noted that a ball bearing is fixedly connected to the bottom of the linkage plate 808, and the bottom of the linkage plate 808 overlaps with the surface of the support base 1 through the ball bearing. The ball bearing is provided to reduce the friction resistance of the linkage plate 808 when it moves on the surface of the support base 1.

[0025] Both sides of the upper portion of the support base 1 are vertically provided with movable slots 811, and the two movable slots 811 correspond one-to-one with the two through slots 805. A vertical hole 812 is provided between the inner bottom surface of the movable slot 811 and the top of the corresponding through slot 805. A T-shaped pad 813 is vertically slidably connected inside the movable slot 811. A compression spring 814 is movably connected between the upper portion of the T-shaped pad 813 and the inner bottom surface of the movable slot 811. The bottom of the T-shaped pad 813 passes through the corresponding vertical hole 812 and extends to the middle position of the U-shaped slide 806. The lower portion of the T-shaped pad 813 is symmetrically fixedly connected to a sliding pin 815. The surface of the U-shaped slide 806 is provided with a pin slot 816 that cooperates with the sliding pin 815. It should be noted that when the T-shaped pad 813 moves downward, the sliding pin 815 and the pin slot 816 cooperate and slide, causing the U-shaped slide 806 to move toward the corresponding adjustment frame 801.

[0026] Z-shaped guide grooves 817 are provided on both sides of the inner wall of the movable groove 811. A guide block 818 is slidably connected between the two Z-shaped guide grooves 817. The bottom of the guide block 818 overlaps the top of the corresponding T-shaped pad 813. A groove 819 is provided on the top of the guide block 818. A pressure block 820 is rotatably connected between the two sides of the inner wall of the groove 819. The two pressure blocks 820 correspond to the left and right sides of the adjustment frame 7. It should be noted that when the adjustment frame 7 moves downward, the left and right ends of the adjustment frame 7 contact the two pressure blocks 820, and the pressure blocks 820 and the guide blocks 818 slide inside the Z-shaped guide groove 817. When the guide block 818 is about to move to the middle inclined position of the Z-shaped guide groove 817, the lower end of the T-shaped pad moves downward with the guide block 818 and slides with the U-shaped slide 806, so that the U-shaped slide 806 slides with the linkage plate 808 and the adjustment frame 801. At this time, the adjustment frame 801 carries the hinged L-shaped positioning plate. 803 flips over to press and position the end of the automobile bend pipe between the two support frames 2. At the same time, as the telescopic rod moves downward, the upper clamping rod 102 presses on the top of the automobile bend pipe after the end is positioned under the action of the buffer mechanism 10, and pre-clamps the automobile bend pipe; and after the guide block 818 moves to the middle inclined position of the Z-shaped guide groove 817, the guide block 818 moves with the pressing block 820 to the inside of the movable groove 811 and releases the contact with the adjustment frame 7. At this time, the compression spring 814 brings the T-shaped pad 813 up and resets.

[0027] In this embodiment, Figures 1 to 10 As shown, waist-shaped grooves are formed on both sides of the inner wall of the positioning groove 804. Positioning slide bars are fixedly connected to the opposite sides of the two adjustment frames 801, and one end of the positioning slide bar is slidably connected to the interior of the adjacent waist-shaped groove. It should be noted that when the adjustment frame 801 slides on the top of the support base 1, the positioning slide bar slides in conjunction with the waist-shaped groove, causing the positioning slide bar to pull the L-shaped positioning plate 803 on the surface of the articulated frame 802 to deflect and press the end of the bent pipe into position.

[0028] In this embodiment, Figures 1 to 10 As shown, the groove 819 is configured as a 90-degree groove, and a torsion spring is fixedly connected between the inner wall of the groove 819 and the side wall of the pressure block 820. It should be noted that the torsion spring is configured to position the pressure block 820 at a 90-degree angle to the movable groove 811, ensuring that the pressure block 820 can be pressed and moved synchronously during the downward movement of the adjustment frame 7; when the adjustment frame 7 at the lower position of the support seat 1 rises, the guide block 818 is reset and positioned at the upper position of the inner wall of the movable groove 811. During this process, the adjustment frame 7 presses against the bottom position of the pressure block 820, causing the pressure block 820 to flip into the groove 819 and release the obstruction to the adjustment frame 7, thereby avoiding interference with the upward movement of the adjustment frame 7.

[0029] In this embodiment, Figures 1 to 10As shown, the end of the L-shaped positioning plate 803 away from the adjustment frame 801 is fixedly connected with a tooth plate. It should be noted that the setting of the tooth plate ensures the stability of the L-shaped positioning plate 803 pressing against the end of the automobile elbow, and the tooth plate can be set as a rubber pad.

[0030] In this embodiment, Figures 1 to 10 As shown, the clamping mechanism 9 includes a pressure rod 901, which is vertically slidably connected to the interior of the chute 5. The top of the pressure rod 901 is fixedly connected to the bottom of the main slider 6. The lower portion of the inner wall of the chute 5 is slidably connected to a slave slider 902 that cooperates with the pressure rod 901. The front end of the slave slider 902 is fixedly connected to an adjustment rod 903. Both ends of the adjustment rod 903 are fixedly connected to hinge blocks 904. The two hinge blocks 904 correspond one-to-one with the two support telescopic rods 3. It should be noted that when the guide block 818 moves along the inner wall of the Z-shaped guide groove 817 to the middle inclined surface position, the downward-moving adjustment frame 7, carrying the main slider 6 and the pressure rod 901, presses against the top of the slave slider 902, causing the slave slider 902 to move downward within the chute 5.

[0031] The top of the support telescopic rod 3 is fixedly connected to a lower clamping rod 905, and the movable end of the support telescopic rod 3 is symmetrically fixedly connected to a connecting pin 906. A U-shaped connecting frame 907 is hinged between the two connecting pins 906. One end of the U-shaped connecting frame 907 is hinged inside the corresponding hinge block 904. A support rod 908 is hinged in the middle of the U-shaped connecting frame 907. The bottom of the support rod 908 is fixedly connected to the lower surface of the support base 1. It should be noted that when the pressure rod 901 releases the pressure on the slider 902, the spring inside the support telescopic rod 3 can move the movable end of the support telescopic rod 3 downward and reset.

[0032] In this embodiment, Figures 1 to 10 As shown, a hinge groove is provided at the top of the support rod 908, a hinge rod is fixedly connected between the two sides of the inner wall of the hinge groove, and the middle part of the U-shaped connecting frame 907 is rotatably connected to the middle part of the hinge rod.

[0033] A connecting groove is symmetrically provided at one end of the U-shaped connecting frame 907 close to the supporting telescopic rod 3 , and the U-shaped connecting frame 907 is slidably connected to the surface of the connecting pin 906 through the connecting groove.

[0034] The hinge block 904 is set as a U-shaped block, and horizontal grooves are provided on both sides of the hinge block 904. The U-shaped connecting frame 907 is symmetrically fixedly connected to a horizontal bar at one end away from the support telescopic rod 3, and the U-shaped connecting frame 907 is slidably connected to the inside of the corresponding horizontal groove through the horizontal bar.

[0035] In this embodiment, Figures 1 to 10 As shown, a method for using an automobile elbow welding device includes the following steps: S1. When in use, first place the automobile elbow between the two support brackets 2, then start the electric telescopic rod 4 and move the main slider 6 downward inside the slide groove 5, so that the main slider 6 and the adjustment frame 7 are pressed against the surface of the pressure block 820, so that the pressure block 820 is pressed and the guide block 818 slides inside the corresponding Z-shaped guide groove 817, and then the downward-moving guide block 818 presses the T-shaped pad rod 813 downward, so that the lower part of the T-shaped pad rod 813 slides inside the pin groove 816 on the surface of the U-shaped slide plate 806 through the sliding pin 815. At this time, the U-shaped slide plate 806 moves toward the support bracket 2 with the connecting rod 807, so that the connecting rod 807 and the linkage plate 808 translates at the bottom of the adjustment frame 801. During this process, the linkage inclined slot 809 on the top of the linkage plate 808 slides in conjunction with the linkage pin 810 at the bottom of the adjustment frame 801, causing the adjustment frame 801 to translate at the top of the support base 1. The end of the adjustment frame 801 drives the hinged L-shaped positioning plate 803 to rotate on the surface of the hinged frame 802. At this time, the two L-shaped positioning plates 803 at the lower part of the support base 1 synchronously deflect relative to each other and press against the two ends of the automobile elbow, pre-positioning the automobile elbow on the top of the two support brackets 2. At the same time, the upper clamping rod 102 at the bottom of the electric telescopic rod 4 also moves downward and presses against the top of the automobile elbow. S2. As the adjusting frame 7 continues to move downward with the pressing block 820 and the guide block 818, the guide block 818 moves to the middle position of the Z-shaped guide groove 817. At this time, the guide block 818 moves the pressing block 820 toward the inside of the movable groove 811, so that the pressing block 820 releases the contact with the end of the adjusting frame 7. At this time, the compression spring 814 moves upward with the T-shaped pad 813 to reset, so that the U-shaped slide 806 pulls the linkage plate 808 to reset through the connecting rod 807. Then, the adjusting frame 801 and the linkage plate 808 cooperate to reset and release the clamping of the automobile elbow with the L-shaped positioning plate 803. S3. Then the main slider 6 continues to move downward inside the slide groove 5 with the pressure rod 901 and presses on the top of the slave slider 902, so that the slave slider 902 is pressed and moves the adjustment rod 903 and the hinge block 904 downward. Under the action of the lever principle, the U-shaped connecting frame 907 rotates with the middle part of the support rod 908 as the axis point, and the U-shaped connecting frame 907 brings the movable end of the support telescopic rod 3 to rise, so that the lower clamping rod 905 moves toward the direction of the automobile bend. During the cooperation between the upper clamping rod 102 and the lower clamping rod 905, the automobile bend is clamped, and then the electric telescopic rod 4 is turned off to maintain the current state. Finally, the welding robot performs welding operations on the two ends of the bend.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An automobile elbow welding device, comprising a support seat (1), characterized in that: Both sides of the lower part of the support seat (1) are fixedly connected to support pad frames (2), and the middle position of the lower part of the support seat (1) is symmetrically fixedly connected to support pad telescopic rods (3), and the two support pad telescopic rods (3) are arranged between the two support pad frames (2); The upper portion of the support seat (1) is fixedly connected to an electric telescopic rod (4), a slide groove (5) is vertically provided on the upper portion of the support seat (1), a main slider (6) is slidably connected to the upper portion of the inner wall of the slide groove (5), an adjustment frame (7) is fixedly connected to the front end of the main slider (6), and one end of the adjustment frame (7) is fixedly connected to the telescopic end of the electric telescopic rod (4); A positioning mechanism (8) is movably connected between the surface of the support frame (2) and the surface of the support seat (1), and the two ends of the upper portion of the positioning mechanism (8) correspond one to one to the left and right sides of the adjustment frame (7). A clamping mechanism (9) is movably connected between the lower portion of the main slider (6) and the support telescopic rod (3); The bottom of the electric telescopic rod (4) is movably connected to a buffer mechanism (10), and the buffer mechanism (10) includes a through hole (101). The through hole (101) is vertically opened at the movable end of the electric telescopic rod (4). The interior of the through hole (101) is slidably connected to an upper clamping rod (102). The upper part of the upper clamping rod (102) is movably sleeved with a buffer spring (103), and the top of the buffer spring (103) overlaps the surface of the electric telescopic rod (4).

2. The automobile elbow welding device according to claim 1, characterized in that: The positioning mechanism (8) comprises an adjustment frame (801), the adjustment frame (801) is movably sleeved on the lower part of the support frame (2), and the bottom of the adjustment frame (801) is slidably connected to the top surface of the lower part of the support seat (1); Both sides of the lower portion of the support seat (1) are fixedly connected with an articulated frame (802), the upper portion of the articulated frame (802) is hinged with an L-shaped positioning plate (803), the two L-shaped positioning plates (803) correspond one to one with the two adjustment frames (801), the lower portion of the L-shaped positioning plate (803) is provided with a positioning groove (804), and the lower portion of the L-shaped positioning plate (803) is movably connected to the side wall of the adjacent adjustment frame (801) through the positioning groove (804); Both sides of the lower part of the support seat (1) are provided with through grooves (805), the interior of the through grooves (805) is slidably connected to a U-shaped slide plate (806), the front end of the U-shaped slide plate (806) is fixedly connected to a connecting rod (807), one end of the connecting rod (807) is fixedly connected to a linkage plate (808), the two linkage plates (808) correspond to the two adjustment frames (801) one by one, the linkage plates (808) are arranged between the bottom of the adjustment frame (801) and the surface of the support seat (1), the top of the linkage plate (808) is provided with a linkage inclined groove (809), the bottom of the adjustment frame (801) is fixedly connected to a linkage pin (810), and the bottom of the adjustment frame (801) is slidably connected to the interior of the corresponding linkage inclined groove (809) through the linkage pin (810); Both sides of the upper portion of the support seat (1) are vertically provided with movable grooves (811), the two movable grooves (811) correspond one to one with the two through grooves (805), a vertical hole (812) is provided between the inner bottom surface of the movable groove (811) and the top of the corresponding through groove (805), the interior of the movable groove (811) is vertically slidably connected with a T-shaped pad rod (813), a compression spring (814) is movably connected between the upper portion of the T-shaped pad rod (813) and the inner bottom surface of the movable groove (811), the bottom of the T-shaped pad rod (813) passes through the corresponding vertical hole (812) and extends to the middle position of the U-shaped slide plate (806), the lower portion of the T-shaped pad rod (813) is symmetrically fixedly connected with a sliding pin (815), and the surface of the U-shaped slide plate (806) is provided with a pin groove (816) that matches the sliding pin (815); Z-shaped guide grooves (817) are provided on both sides of the inner wall of the movable groove (811), and a guide block (818) is slidably connected between the two Z-shaped guide grooves (817). The bottom of the guide block (818) is overlapped on the top of the corresponding T-shaped pad rod (813), and a groove (819) is provided on the top of the guide block (818). A pressure block (820) is rotatably connected between the two sides of the inner wall of the groove (819), and the two pressure blocks (820) correspond one to one to the left and right sides of the adjustment frame (7).

3. The automobile elbow welding device according to claim 2, characterized in that: Both sides of the inner wall of the positioning groove (804) are provided with waist-shaped grooves, and the opposite sides of the two adjustment frames (801) are fixedly connected with positioning slide rods, and one end of the positioning slide rod is slidably connected to the inside of the adjacent waist-shaped groove.

4. The automobile elbow welding device according to claim 3, characterized in that: The groove (819) is configured as a ninety-degree groove, and a torsion spring is fixedly connected between the inner wall of the groove (819) and the side wall of the pressing block (820).

5. The automobile elbow welding device according to claim 4, characterized in that: One end of the L-shaped positioning plate (803) away from the adjustment frame (801) is fixedly connected to a toothed plate.

6. The automobile elbow welding device according to claim 5, characterized in that: The clamping mechanism (9) includes a pressure rod (901), the pressure rod (901) is vertically slidably connected to the inside of the slide groove (5), the top of the pressure rod (901) is fixedly connected to the bottom of the main slider (6), the lower part of the inner wall of the slide groove (5) is slidably connected to a slave slider (902) that matches the pressure rod (901), the front end of the slave slider (902) is fixedly connected to an adjustment rod (903), both ends of the adjustment rod (903) are fixedly connected to hinge blocks (904), and the two hinge blocks (904) correspond one to one to the two support pad telescopic rods (3); The top of the support telescopic rod (3) is fixedly connected to a lower clamping rod (905), the movable end of the support telescopic rod (3) is symmetrically fixedly connected to a connecting pin (906), a U-shaped connecting frame (907) is hinged between the two connecting pins (906), one end of the U-shaped connecting frame (907) is hinged to the inside of the corresponding hinge block (904), the middle of the U-shaped connecting frame (907) is hinged to a support rod (908), and the bottom of the support rod (908) is fixedly connected to the lower surface of the support base (1).

7. The automobile elbow welding device according to claim 6, characterized in that: A hinge groove is provided at the top of the support rod (908), a hinge rod is fixedly connected between the two sides of the inner wall of the hinge groove, and the middle part of the U-shaped connecting frame (907) is rotatably connected to the middle part of the hinge rod; The U-shaped connecting frame (907) is symmetrically provided with a connecting groove at one end close to the support telescopic rod (3), and the U-shaped connecting frame (907) is slidably connected to the surface of the connecting pin (906) through the connecting groove; The hinge block (904) is configured as a U-shaped block, with transverse grooves being provided on both sides of the hinge block (904). One end of the U-shaped connecting frame (907) away from the support telescopic rod (3) is symmetrically fixedly connected to a transverse rod, and the U-shaped connecting frame (907) is slidably connected to the inside of the corresponding transverse groove via the transverse rod.

8. The method for using the automobile elbow welding device according to claim 7, comprising the following steps: S1. When in use, first place the automobile elbow between the two support brackets (2), then start the electric telescopic rod (4) and move the main slider (6) downward inside the slide groove (5), so that the main slider (6) and the adjustment frame (7) are pressed against the surface of the pressure block (820), so that the pressure block (820) is pressed and the guide block (818) slides inside the corresponding Z-shaped guide groove (817), and then the downward-moving guide block (818) presses the T-shaped pad rod (813) downward, so that the lower part of the T-shaped pad rod (813) slides inside the pin groove (816) on the surface of the U-shaped slide plate (806) through the sliding pin (815). At this time, the U-shaped slide plate (806) moves toward the support bracket (2) with the connecting rod (807), so that the connecting rod (807) and the guide block (818) are pressed and moved downward. The linkage plate (808) translates at the bottom of the adjustment frame (801). During this process, the linkage inclined slot (809) at the top of the linkage plate (808) and the linkage pin (810) at the bottom of the adjustment frame (801) slide in cooperation, so that the adjustment frame (801) translates at the top of the support seat (1). The end of the adjustment frame (801) carries the hinged L-shaped positioning plate (803) to rotate on the surface of the hinge frame (802). At this time, the two L-shaped positioning plates (803) at the lower part of the support seat (1) are synchronously deflected relative to each other and pressed against the two ends of the automobile bend, and the automobile bend on the top of the two support frames (2) is pre-positioned. At the same time, the upper clamping rod (102) at the bottom of the electric telescopic rod (4) also moves downward and presses against the top of the automobile bend. S2, as the adjustment frame (7) continues to move downward with the pressure block (820) and the guide block (818), the guide block (818) moves to the middle position of the Z-shaped guide groove (817), and the guide block (818) moves toward the inside of the movable groove (811), so that the pressure block (820) releases the contact with the end of the adjustment frame (7), and the compression spring (814) moves upward with the T-shaped pad (813) to reset, so that the U-shaped slide plate (806) pulls the linkage plate (808) to reset through the connecting rod (807), and then the adjustment frame (801) and the linkage plate (808) cooperate to reset and release the clamping of the automobile elbow with the L-shaped positioning plate (803); S3, then the main slider (6) with the pressure rod (901) continues to move down inside the slide (5) and presses against the top of the slave slider (902), so that the slave slider (902) is pressed and moves down with the adjustment rod (903) and the hinge block (904). Under the action of the lever principle, the U-shaped connecting frame (907) rotates with the middle of the support rod (908) as the axis point, and the U-shaped connecting frame (907) and the movable end of the support telescopic rod (3) rise, so that the lower clamping rod (905) moves toward the direction of the automobile bend. During the cooperation process between the upper clamping rod (102) and the lower clamping rod (905), the automobile bend is clamped, and then the electric telescopic rod (4) is turned off to maintain the current state. Finally, the welding robot performs welding operation on the two ends of the bend.

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