A welding device and method for producing metal bellows

Abstract

The present invention discloses a welding device and method for the production of metal bellows, which relates to the technical field of metal pipe production. The present invention includes a base, a slide rail is arranged on the top of the base, a collection box is arranged on one side of the back of the slide rail, two linkage plates are symmetrically arranged inside the slide rail, an L-shaped plate is arranged at the edge of the top of the base, and an annular track is arranged on the side of the L-shaped plate close to the axis of the base. A welding assembly is arranged inside the annular track; two anti-deviation devices are symmetrically arranged on the top of the base, and an anti-falling device is arranged inside the anti-deviation device. The present invention relies on the inclined plate and the round roller to ensure that the pipe entering the inside of the limit ring is always located at the center of the inside of the limit ring, avoiding a slight deviation during the alignment process of the pipes, and it is necessary for the staff to observe the deviated direction with the naked eye and then manually adjust it, effectively improving the alignment accuracy between the two pipes and shortening the welding preparation time.

Description

Technical Field

[0001] The present invention relates to the technical field of metal pipe production, and specifically to a welding device and method for producing metal bellows. Background Art

[0002] A metal bellows is a pipe with a regular wavy shape, which is widely used in high-tech fields such as semiconductor manufacturing, national defense research, and aerospace. Welding devices are commonly used in the processing and production of metal bellows. Usually, two metal bellows are aligned and then welded by the welding device. With the development of production technology, the welding quality has been continuously improved.

[0003] The patent with the patent announcement number CN218193540U discloses a welding device for producing metal bellows, belonging to the technical field of bellows processing. The patent includes a chassis and a welding assembly. A vertical plate is fixedly connected to the chassis, and a driving mechanism is fixedly connected to the surface of the vertical plate; A pair of sliding rods are fixedly connected to the chassis. One end of the sliding rod is fixedly connected to a fixing plate, and a clamping seat for clamping and fixing the metal bellows is fixedly connected to the fixing plate; A sliding plate is slidably connected to the sliding rod, and a clamping seat for clamping and fixing another metal bellows is fixedly connected to the sliding plate. A fixing rod is fixedly connected to the side of the sliding plate. One end of the fixing rod is movably connected to a connecting block, and a spring is connected to the surface of the fixing rod; A pushing cylinder is fixedly connected to the chassis, and the piston rod of the pushing cylinder is fixedly connected to the connecting block; This patent makes the two metal bellows closely aligned through the elastic force of the spring, solving the problem that the metal bellows cannot be closely aligned during welding.

[0004] However, there are still deficiencies in the current device: The device can closely align two metal bellows for welding, but during the alignment process of the pipes, there is a slight deviation phenomenon. It is necessary for the staff to observe the deviation direction with the naked eye and manually adjust it, which is difficult to ensure the alignment accuracy between the two pipes to a certain extent and prolongs the preparation time before welding, easily leading to a decrease in welding efficiency. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides a welding device and method for producing metal bellows, solving the problems raised in the above background art.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions: A welding device for producing metal bellows, including a base, a slide rail is arranged on the top of the base, a collection box is arranged on one side of the back of the slide rail, two linkage plates are symmetrically arranged inside the slide rail, an L-shaped plate is arranged at the edge of the top of the base, an annular track is arranged on the side of the L-shaped plate close to the axis of the base, and a welding assembly is arranged inside the annular track;

[0007] Two anti-deviation devices are symmetrically arranged on the top of the base. An anti-falling device is arranged inside the anti-deviation device, and an anti-obstruction device is arranged inside the anti-falling device;

[0008] The anti-deviation device includes two U-shaped groove plates. The bottoms of the inner walls of the two U-shaped groove plates are fixedly installed on the top of the linkage plate. The bottom of the U-shaped groove plate is in contact with the top of the base. A limit ring is fixedly installed on the top of the U-shaped groove plate. A number of elastic telescopic rods are equidistantly installed inside the limit ring. One side of the elastic telescopic rod close to the center of the limit ring is fixedly installed with an arc-shaped clamping plate. A rubber block is fixedly installed inside the square groove of the arc-shaped clamping plate. A number of inclined plates are equidistantly and hingedly installed on one side of the limit ring away from the center of the base, and a U-shaped groove is opened at one end of the inclined plate away from the limit ring. A round roller is rotatably installed inside the U-shaped groove of the inclined plate. A heating component is fixedly installed on one side of the U-shaped groove plate away from the axis of the base.

[0009] According to the above technical solution, the fixed ends of the plurality of elastic telescopic rods are equidistantly distributed inside the limit ring. A square groove is opened on one side of the arc-shaped clamping plate close to the center of the limit ring. A torsion spring is arranged between each of the plurality of inclined plates and the limit ring. First, the metal bellows is placed inside the limit ring. At this time, the U-shaped groove plate limits and stabilizes the limit ring. During the process of the pipe moving horizontally from the outside to the inside of the limit ring close to the center of the base, the outer wall of the pipe first contacts the outer wall of the round roller. The outer wall of the round roller generates a rotating force through the force of the pipe movement and the friction force on its outer wall. When the round roller rotates inside the inclined plate, it is convenient for the pipe to enter the inside of the inclined plate close to the center of the limit ring. At the same time, the resistance forces generated by pipes with different diameters against the inclined plate are different. When the inclined plate receives the resistance force, its hinge shaft starts to rotate, and drives the inclined plate to flip away from the center of the limit ring. At the same time, the inclined plate makes the round roller always fit the outer wall of the pipe through the limitation of the torsion spring. At the same time, the heating component on the outer wall of the U-shaped groove plate is pre-activated to emit heat. Subsequently, the slide rail drives the two U-shaped groove plates on both sides to move towards the center of the base through the linkage plate, and the U-shaped groove plate drives the heating component to move synchronously to expand the heating range. When the welding parts of the two pipes are butted inside the annular track, the annular track drives the welding component to perform a circular motion inside itself and welds the pipes in a circular motion; after the pipe enters the inside of the limit ring and contacts the arc surface of the outer wall of the arc-shaped clamping plate, during the movement of the pipe, it will resist the arc-shaped clamping plate to move away from the center of the limit ring. The arc-shaped clamping plate resists the telescopic end of the elastic telescopic rod to contract synchronously, and through the setting of the spring inside the elastic telescopic rod, it is ensured that the concave surface of the arc-shaped clamping plate always closely adheres to the outer wall of the pipe, that is, the rubber block always fits the outer wall of the pipe to increase the friction force between the arc-shaped clamping plate and the pipe.

[0010] According to the above technical solution, the anti-falling device includes a transmission plate, a circular slotted frame, a sliding plate and a telescopic arc plate. The bottom of the transmission plate is hinged to the side of the heating component close to the center of the base through a torsion spring. The bottom of the circular slotted frame is fixedly installed at the top edge of the base. Both sides of the sliding plate are slidably installed inside the circular slotted frame. The telescopic end of the telescopic arc plate is hinged to the side of the sliding plate close to the axis of the base away from the axis of the base.

[0011] According to the above technical solution, the sliding plate is hinged on the top of the transmission plate at one side away from the center of the base, and a torsion spring is arranged between the telescopic end of the telescopic arc plate and the sliding plate, and the telescopic end of the telescopic arc plate is located inside the circular slotted frame. When the heating component moves toward the center of the base, it drives the transmission plate to move synchronously, and the top of the transmission plate is limited by the sliding plate, causing its own hinge axis to start rotating, and the transmission plate drives the sliding plate to slide upward along the inner wall of the circular slotted frame, and the sliding plate drives the telescopic arc plate to move upward, and the concave surface of the fixed end of the telescopic arc plate contacts the outer wall of the pipe and applies an upward pulling force to it, and when the diameter of the pipe is too large, a resistance force will be generated between the telescopic arc plate and the telescopic arc plate, and at this time, the hinge axis of the telescopic arc plate starts to rotate and causes the telescopic end of the telescopic arc plate to start extending.

[0012] According to the above technical scheme, the anti-falling device also includes a heat-conducting component, a hot air gun, a spiral hose and a semicircular guide plate. The heat-conducting component is fixedly installed on the outer wall of the sliding plate near the center of the base, and the hot air gun is fixedly installed inside the heat-conducting component at one end away from the axis of the base. The spiral hose is connected and fixedly installed between the heat-conducting component and the heating component. The bottom of the semicircular guide plate is fixedly installed on the top of the heat-conducting component. When the sliding plate moves upward, it drives the heat-conducting component to move synchronously. The heat-conducting component drives the hot air gun to move synchronously and pulls the spiral hose to deform synchronously. The heating component directly inputs heat into the heat-conducting component through the spiral hose. At this time, the heat-conducting component is centered through the hot air gun to be closer to the end of the pipe to be welded, and the centered heating range of the pipe is expanded when the heat-conducting component moves, and the semicircular guide plate guides the heat in a ring through its own concave surface to reduce the heat loss rate.

[0013] According to the above technical solution, the anti-obstruction device includes a U-shaped plate, a rotating rod, a cam and a U-shaped retractable brush plate. The top of the U-shaped plate is fixedly installed on the bottom of the semicircular guide plate, the bottom of the rotating rod is rotatably installed on the top of the base, the cam passes through and is fixedly installed on the outer wall of the bottom end of the rotating rod, and the U-shaped retractable brush plate is slidably installed on the top of the base near the bottom of one end of the rotating rod through a spring.

[0014] The U-shaped retractable brush plate is located at the bottom of one end of the slide rail and scrapes the bottom of the inner wall of the slide rail. When the cam no longer contacts the arc surface of the U-shaped retractable brush plate, the U-shaped retractable brush plate is reset by the spring force and reciprocates like this. At the same time, the U-groove plate contacts the retractable end of the U-shaped retractable brush plate during the movement.

[0015] According to the above technical solution, the anti-obstruction device also includes a telescopic column, a plurality of arc panels, an activated carbon plate and a resistance plate. The bottom of the telescopic column is fixedly mounted on the top of the rotating rod. The outer wall of the telescopic end of the telescopic column movably passes through the top of the U-shaped plate. The plurality of arc panels are equidistantly and fixedly mounted on the outer wall of the telescopic end of the telescopic column. The outer wall of the activated carbon plate is slidably mounted on the inner wall of the semicircular guide plate through a spring. The resistance plate is fixedly mounted on the inner wall of the activated carbon plate away from the telescopic column. The arc surface of the resistance plate is located on the movement trajectory of the arc panel. When the rotating rod rotates, it drives the telescopic column to rotate, and in the process of the U-shaped plate moving upward, an upward impact is generated on the arc panel. The thrust of the arc panel pulls the telescopic end of the telescopic column to move synchronously, and the telescopic end of the telescopic column drives the arc panel to rotate. During the rotation of the arc panel, the semicircular guide plate drives the activated carbon plate to move upward synchronously, and the activated carbon plate drives the resistance plate to move synchronously, so that the resistance plate is always located on the movement trajectory of the arc panel. Therefore, during the rotation of the arc panel, its own arc surface contacts the arc surface of the resistance plate to promote its movement. At this time, the resistance plate pulls the activated carbon plate to slide along the concave surface of the semicircular guide plate. As the arc guide angle between the resistance plate and the arc panel gradually increases, the arc panel will pass over the resistance plate. At this time, the activated carbon plate is reset by the spring force, and this process repeats.

[0016] A method for using a welding device for producing a metal bellows comprises the following steps:

[0017] S1: First, put the metal bellows into the limiting ring. At this time, the U-groove plate limits and stabilizes the limiting ring. When the pipe moves horizontally from the outside to the center of the base to the inside of the limiting ring, the outer wall of the pipe first contacts the outer wall of the roller. The outer wall of the roller generates a rotational force through the force of the pipe movement and the friction force of its outer wall.

[0018] S2: When the round roller rotates within the inclined plate, it facilitates the entry of the pipe into the inner side of the inclined plate near the center of the limit ring. At the same time, the resistance forces generated by pipes of different diameters against the inclined plate are different. When the inclined plate is subjected to the resistance force, its hinge shaft starts to rotate, driving the inclined plate to flip away from the center of the limit ring. Meanwhile, due to the restriction of the torsion spring, the round roller always adheres to the outer wall of the pipe.

[0019] S3: Meanwhile, the heating components on the outer wall of the U-groove plate are pre-activated to emit heat. Subsequently, the slide rail drives the two U-groove plates on both sides to move towards the center of the base through the linkage plate. The U-groove plate drives the heating components to move synchronously, thereby expanding the heating range. When the welding parts of the two pipes are butted inside the annular track, the annular track drives the welding component to perform circular motion inside itself and welds the pipes in a circular motion.

[0020] S4: After the pipe enters the limit ring, it comes into contact with the arc surface of the outer wall of the arc-shaped clamping plate. During the movement of the pipe, it will resist the arc-shaped clamping plate and move away from the center of the limit ring. The arc-shaped clamping plate resists the telescopic end of the elastic telescopic rod to contract synchronously. And due to the setting of the spring inside the elastic telescopic rod, the concave surface of the arc-shaped clamping plate always closely adheres to the outer wall of the pipe, that is, the rubber block always adheres to the outer wall of the pipe, thereby increasing the friction force between the arc-shaped clamping plate and the pipe.

[0021] The present invention provides a welding device and method for the production of metal bellows. It has the following beneficial effects:

[0022] (1) Through the setting of the anti-deviation device, the present invention cooperates with the U-groove plate, limit ring, elastic telescopic rod, arc-shaped clamping plate, rubber block, inclined plate, round roller and heating components. Relying on the heating components to uniformly preheat the welding area, at the same time, the inclined plate and the round roller ensure that the pipe entering the limit ring is always located at the center inside the limit ring, avoiding the phenomenon of slight deviation during the alignment of the pipes, and eliminating the need for workers to visually observe the deviation direction and manually adjust it. It effectively improves the alignment accuracy between the two pipes and shortens the welding preparation time; and enables the arc-shaped clamping plate inside the limit ring to adaptively clamp pipes of different diameters, and the rubber block enhances the clamping stability of the arc-shaped clamping plate on the pipe. At the same time, it cooperates with the round roller to expand the contact range with the outer wall of the pipe, further improving the stability during the horizontal welding of the pipe and effectively preventing the pipe from shaking during welding and resulting in butt joint misalignment.

[0023] (2) The present invention realizes the adaptive lifting of pipes of different diameters by the telescopic arc plate through the setting of the anti-falling device, through the cooperation of the heating component, the transmission plate, the circular slotted frame, the sliding plate, the telescopic arc plate, the heat conducting component, the hot air gun, the spiral hose and the semicircular guide plate, so as to prevent the pipes from falling due to one end being too heavy, thereby improving the practicability of the equipment and broadening the scope of application, avoiding the force of the pipes being offset due to the vibration of the equipment during the welding process, and further improving the docking stability of the pipes; at the same time, the hot air gun is used to perform rapid heat treatment on the pipes to ensure that the welded parts of the pipes are evenly heated, avoiding the increase of stress concentration at the pipe welding parts during the direct cold welding process, thereby increasing the probability of cracks in the weld, and preventing the flatness of the weld from being reduced due to stress concentration.

[0024] (3) The present invention sets an anti-obstruction device, and cooperates with a semicircular guide plate, a U-shaped plate, a rotating rod, a cam, a U-shaped telescopic brush plate, a telescopic column, a curved plate, an activated carbon plate and a contact plate to enable the U-shaped telescopic brush plate to push the welding debris or external dirt that falls from the inside of the slide rail to the inside of the collection box on the outer wall of the slide rail, thereby ensuring the cleanliness of the inside of the slide rail and realizing centralized collection of dirt, thereby preventing dirt from accumulating and solidifying inside the slide rail to interfere with the horizontal stable movement of the U-groove plate, preventing solidified dirt from affecting the stability of the U-groove plate during movement, and preventing the pipe from deviating from the center of the limit ring; and relying on the reciprocating sliding of the activated carbon plate on the inner wall of the semicircular guide plate to effectively expand the range of movement of the activated carbon plate, relying on the activated carbon plate to purify the harmful gas accumulated inside the semicircular guide plate due to welding smoke before and after the processing, thereby preventing the untreated harmful gas from deteriorating the processing environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the present invention as a whole;

[0026] Figure 2 It is a schematic diagram of the internal structure of the present invention as a whole;

[0027] Figure 3 It is a schematic diagram of the anti-deviation device of the present invention;

[0028] Figure 4 It is a schematic diagram showing the overall structure of the anti-deviation device of the present invention;

[0029] Figure 5 It is a schematic diagram of the anti-falling device of the present invention;

[0030] Figure 6 It is a schematic diagram of the right side perspective of the anti-falling device of the present invention;

[0031] Figure 7 It is a schematic diagram of the anti-obstruction device of the present invention;

[0032] Figure 8 It is a schematic diagram of the anti-obstruction device of the present invention from the back view.

[0033] In the figure: 1. Base; 2. Slide rail; 21. Linking plate; 3. L-shaped plate; 31. Annular track; 32. Welding assembly; 4. Anti-deviation device; 41. U-groove plate; 42. Limiting ring; 43. Elastic telescopic rod; 44. Arc-shaped clamping plate; 45. Rubber block; 46. Inclined plate; 47. Round roller; 48. Heating assembly; 5. Anti-falling device; 51. Transmission plate; 52. Square-grooved frame; 53. Sliding plate; 54. Telescopic arc plate; 55. Heat conduction assembly; 56. Hot air gun; 57. Spiral hose; 58. Semi-circular guide plate; 6. Anti-obstruction device; 61. U-shaped plate; 62. Rotating rod; 63. Cam; 64. U-shaped telescopic brush plate; 65. Telescopic column; 66. Arc-shaped panel; 67. Activated carbon plate; 68. Contact plate. Specific embodiments

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0035] Please refer to Figures 1 - 8 , an embodiment of the present invention is: A welding device for the production of metal bellows, including a base 1, a slide rail 2 is arranged on the top of the base 1, a collection box is arranged on one side of the back of the slide rail 2, two linking plates 21 are symmetrically arranged inside the slide rail 2, an L-shaped plate 3 is arranged at the edge of the top of the base 1, an annular track 31 is arranged on the side of the L-shaped plate 3 close to the axis of the base 1, and a welding assembly 32 is arranged inside the annular track 31;

[0036] Two anti-deviation devices 4 are symmetrically arranged on the top of the base 1, an anti-falling device 5 is arranged inside the anti-deviation device 4, and an anti-obstruction device 6 is arranged inside the anti-falling device 5;

[0037] The anti-deviation device 4 includes two U-groove plates 41, the bottoms of the inner walls of the two U-groove plates 41 are fixedly installed on the top of the linking plate 21, the bottom of the U-groove plate 41 is in contact with the top of the base 1, a limiting ring 42 is fixedly installed on the top of the U-groove plate 41, a number of elastic telescopic rods 43 are equidistantly installed inside the limiting ring 42, an arc-shaped clamping plate 44 is fixedly installed on the side of the elastic telescopic rod 43 close to the center of the limiting ring 42, a rubber block 45 is fixedly installed inside the square groove of the arc-shaped clamping plate 44, a number of inclined plates 46 are equidistantly and hingedly installed on the side of the limiting ring 42 away from the center of the base 1, and a U-shaped groove is opened at one end of the inclined plate 46 away from the limiting ring 42, a round roller 47 is rotatably installed inside the U-shaped groove of the inclined plate 46, and a heating assembly 48 is fixedly installed on the side of the U-groove plate 41 away from the axis of the base 1.

[0038] The fixed ends of several elastic telescopic rods 43 are equidistantly distributed inside the limit ring 42. A square groove is formed on one side of the arc-shaped clamping plate 44 close to the center of the limit ring 42. A torsion spring is arranged between several inclined plates 46 and the limit ring 42. Through the above cooperation, the welding area is evenly preheated by the heating component 48. At the same time, the inclined plate 46 and the round roller 47 ensure that the pipe entering the inside of the limit ring 42 is always located at the center inside the limit ring 42, avoiding slight deviation during the alignment of the pipes. And it is necessary for the staff to observe the deviation direction with the naked eye and manually adjust it, effectively improving the alignment accuracy between the two pipes and shortening the welding preparation time; through the above cooperation, the arc-shaped clamping plate 44 inside the limit ring 42 adaptively clamps pipes with different diameters, and the rubber block 45 enhances the clamping stability of the arc-shaped clamping plate 44 on the pipe. At the same time, it cooperates with the round roller 47 to expand the contact range with the outer wall of the pipe, further improving the stability during the horizontal welding of the pipe, effectively preventing the pipe from shaking during welding and causing butt joint misalignment.

[0039] During use, first place the metal bellows inside the limit ring 42. At this time, the U-groove plate 41 limits and stabilizes the limit ring 42. During the process of the pipe moving horizontally from the outside towards the center of the base 1 and into the limit ring 42, the outer wall of the pipe first contacts the outer wall of the round roller 47. The outer wall of the round roller 47 generates a rotational force through the force of the pipe's movement and the friction force on its outer wall. When the round roller 47 rotates within the inclined plate 46, it facilitates the pipe to enter the inner side of the inclined plate 46 closer to the center of the limit ring 42. At the same time, the resistance forces generated by pipes of different diameters against the inclined plate 46 are different. When the inclined plate 46 receives the resistance force, its hinge axis starts to rotate, and the inclined plate 46 is driven to flip away from the center of the limit ring 42. At the same time, the inclined plate 46, through the restriction of the torsion spring, causes the round roller 47 to always fit the outer wall of the pipe. At the same time, the heating component 48 on the outer wall of the U-groove plate 41 is pre-activated to emit heat. Subsequently, the slide rail 2 drives the U-groove plates 41 on both sides towards the center of the base 1 through the linkage plate 21. The U-groove plate 41 drives the heating component 48 to move synchronously, thereby expanding the heating range. When the welding parts of the two pipes are butted inside the annular track 31, the annular track 31 drives the welding component 32 to perform a circular motion inside itself and welds the pipes in a circular motion. Through the above cooperation, the heating component 48 is relied on to uniformly preheat the welding area. At the same time, the inclined plate 46 and the round roller 47 ensure that the pipe entering the limit ring 42 is always located at the center of the limit ring 42, avoiding slight deviation during the pipe alignment process, and requiring the operator to observe the deviation direction with the naked eye and manually adjust it, effectively improving the alignment accuracy between the two pipes and shortening the welding preparation time; after the pipe enters the limit ring 42, it contacts the arc surface of the outer wall of the arc-shaped clamping plate 44. During the movement of the pipe, it will resist the arc-shaped clamping plate 44 to move away from the center of the limit ring 42. The arc-shaped clamping plate 44 resists the telescopic end of the elastic telescopic rod 43 to contract synchronously, and through the setting of the spring inside the elastic telescopic rod 43, the concave surface of the arc-shaped clamping plate 44 is always tightly attached to the outer wall of the pipe, that is, the rubber block 45 always fits the outer wall of the pipe, thereby increasing the friction force between the arc-shaped clamping plate 44 and the pipe. Through the above cooperation, the arc-shaped clamping plate 44 inside the limit ring 42 adaptively clamps pipes of different diameters, and the rubber block 45 enhances the clamping stability of the arc-shaped clamping plate 44 on the pipe. At the same time, it cooperates with the round roller 47 to expand the contact range with the outer wall of the pipe, further improving the stability during the horizontal welding of the pipe and effectively preventing the pipe from shaking during welding and causing butt joint misalignment.

[0040] Please refer to Figures 1 - 8 , on the basis of the above embodiment, in another embodiment of the present invention, an anti-falling device 5 is further included;

[0041] The anti-falling device 5 includes a transmission plate 51, a rectangular slotted frame 52, a sliding plate 53 and a telescopic arc plate 54. The bottom of the transmission plate 51 is hinged to the side of the heating assembly 48 close to the center of the base 1 through a torsion spring. The bottom of the rectangular slotted frame 52 is fixedly installed at the top edge of the base 1. Both sides of the sliding plate 53 are slidably installed inside the rectangular slotted frame 52. The telescopic end of the telescopic arc plate 54 is hinged to the side of the sliding plate 53 close to the axis of the base 1 on the side away from the axis of the base 1.

[0042] The side of the sliding plate 53 away from the center of the base 1 is hinged to the top of the transmission plate 51. A torsion spring is provided between the telescopic end of the telescopic arc plate 54 and the sliding plate 53. The telescopic end of the telescopic arc plate 54 is located inside the rectangular slotted frame 52. Through the above cooperation, the telescopic arc plate 54 realizes the adaptive lifting work for pipes with different diameters, prevents the phenomenon of falling due to excessive weight at one end, improves the practicability of the equipment and broadens the application range, avoids the force of pipe deviation caused by the vibration of the equipment during the welding process, and further improves the butt joint stability of the pipes.

[0043] The anti-falling device 5 further includes a heat conduction assembly 55, a hot air gun 56, a spiral hose 57 and a semi-circular guide plate 58. The side of the heat conduction assembly 55 close to the center of the base 1 is fixedly installed on the outer wall of the sliding plate 53. One end of the hot air gun 56 away from the axis of the base 1 is fixedly installed inside the heat conduction assembly 55. The spiral hose 57 is connected and fixedly installed between the heat conduction assembly 55 and the heating assembly 48. The bottom of the semi-circular guide plate 58 is fixedly installed on the top of the heat conduction assembly 55. Through the above cooperation, the hot air gun 56 is relied on to quickly heat-treat the pipe, ensuring that the welding area of the pipe is evenly heated, avoiding the increase in stress concentration during the direct cold welding of the welding area of the pipe during the welding process, which increases the probability of cracks in the weld, and preventing the flatness of the weld from being reduced due to stress concentration.

[0044] When in use, the heating component 48 moves toward the center of the base 1, driving the transmission plate 51 to move synchronously. The top of the transmission plate 51 is limited by the sliding plate 53, causing its own hinge axis to start to rotate. The transmission plate 51 drives the sliding plate 53 to slide upward along the inner wall of the circular slotted frame 52, and the sliding plate 53 drives the telescopic arc plate 54 to move upward. After the concave surface of the fixed end of the telescopic arc plate 54 contacts the outer wall of the pipe, an upward pulling force is applied to it. When the diameter of the pipe is too large, a resistance force will be generated between the telescopic arc plate 54. At this time, the hinge axis of the telescopic arc plate 54 starts to rotate and causes the telescopic end of the telescopic arc plate 54 to start to extend. Through the above cooperation, the telescopic arc plate 54 can achieve adaptive pulling of pipes of different diameters, prevent one end from falling due to excessive weight, improve the practicability of the equipment and broaden the scope of application, avoid the force of the pipe being offset due to equipment vibration during welding, and further improve The docking stability of the pipes; when the sliding plate 53 moves upward, it drives the heat-conducting component 55 to move synchronously, and the heat-conducting component 55 drives the hot air gun 56 to move synchronously and pulls the spiral hose 57 to deform synchronously. The heating component 48 directly inputs heat into the heat-conducting component 55 through the spiral hose 57. At this time, the heat-conducting component 55 is centered through the hot air gun 56 to be closer to the end of the pipe to be welded, and the heat-conducting component 55 expands the centered heating range of the pipe when it moves, and the semicircular guide plate 58 guides the heat in a ring shape through its own concave surface to reduce the heat loss rate. Through the above cooperation, the hot air gun 56 is used to quickly heat treat the pipe to be welded, ensuring that the pipe to be welded is evenly heated, avoiding the increase of stress concentration at the pipe welding point during direct cold welding during welding, thereby increasing the probability of cracks in the weld, and preventing stress concentration from reducing the flatness of the weld.

[0045] See also Figures 1 - 8 , based on the above embodiment, another embodiment of the present invention further includes an anti-obstruction device 6;

[0046] The anti-obstruction device 6 includes a U-shaped plate 61, a rotating rod 62, a cam 63 and a U-shaped telescopic brush plate 64. The top of the U-shaped plate 61 is fixedly installed on the bottom of the semicircular guide plate 58, the bottom of the rotating rod 62 is rotatably installed on the top of the base 1, the cam 63 passes through and is fixedly installed on the outer wall of the bottom end of the rotating rod 62, and the U-shaped telescopic brush plate 64 is slidably installed on the top of the base 1 near the bottom of one end of the rotating rod 62 through a spring.

[0047] The outer wall of the top end of the rotating rod 62 passes through and is threadedly connected to the inside of the U-shaped plate 61, the bottom of the cam 63 contacts the top of the base 1, and the arc surface of the outer wall of the fixed end of the U-shaped telescopic brush plate 64 is located on the movement trajectory of the cam 63. The bottom of the U-shaped telescopic brush plate 64 away from the rotating rod 62 contacts the bottom of the inner wall of the slide rail 2. Through the above cooperation, the U-shaped telescopic brush plate 64 pushes the welding debris or external dirt dropped from the inside of the slide rail 2 to the inside of the collection box on the outer wall of the slide rail 2, thereby ensuring the cleanliness of the inside of the slide rail 2 and realizing the centralized collection of dirt, avoiding the accumulation of dirt and solidification inside the slide rail 2 to interfere with the horizontal stable movement of the U-slot plate 41, avoiding the solidified dirt affecting the stability of the U-slot plate 41 during movement, and preventing the pipe from deviating from the center of the limit ring 42.

[0048] The anti-obstruction device 6 also includes a telescopic column 65, a plurality of arc panels 66, an activated carbon plate 67 and a resistance plate 68. The bottom of the telescopic column 65 is fixedly mounted on the top of the rotating rod 62, and the outer wall of the telescopic end of the telescopic column 65 moves through the top of the U-shaped plate 61. A plurality of arc panels 66 are equidistant and fixedly mounted on the outer wall of the telescopic end of the telescopic column 65. The outer wall of the activated carbon plate 67 is slidably mounted on the inner wall of the semicircular guide plate 58 through a spring, and the resistance plate 68 is fixedly mounted on the inner wall of the activated carbon plate 67 away from the telescopic column 65. The arc surface of the resistance plate 68 is located on the movement trajectory of the arc panel 66. Through the above cooperation, the activated carbon plate 67 slides back and forth on the inner wall of the semicircular guide plate 58 to effectively expand the range of movement of the activated carbon plate 67. The activated carbon plate 67 is relied on to purify the harmful gas accumulated inside the semicircular guide plate 58 due to welding smoke before and after the processing, so as to avoid the untreated harmful gas from deteriorating the processing environment.

[0049] When in use, the semicircular guide plate 58 moves upward and drives the U-shaped plate 61 to move synchronously. During the upward movement of the U-shaped plate 61, the bottom end of the U-shaped plate drives the threaded rotating rod 62 to generate a rotating force, and the rotating rod 62 starts to rotate along the top of the base 1. The rotating rod 62 drives the cam 63 to rotate. When the cam 63 rotates, it resists the arc surface of the U-shaped telescopic brush plate 64. The U-shaped telescopic brush plate 64 slides along the top of the base 1 toward its back due to the resistance force. The U-shaped telescopic brush plate 64 is located at the bottom of one end of the inner side of the slide rail 2 and scrapes the bottom of the inner wall of the slide rail 2. When the cam 63 no longer resists the arc surface of the U-shaped telescopic brush plate 64, The U-shaped telescopic brush plate 64 is reset by the spring force and reciprocates like this. At the same time, the U-groove plate 41 resists the contraction of the telescopic end of the U-shaped telescopic brush plate 64 during the movement. Through the above cooperation, the U-shaped telescopic brush plate 64 pushes the welding debris or external dirt dropped from the inside of the slide rail 2 to the inside of the collection box on the outer wall of the slide rail 2, ensuring the cleanliness of the inside of the slide rail 2 and realizing the centralized collection of dirt, avoiding the accumulation of dirt and solidification inside the slide rail 2 to interfere with the horizontal stable movement of the U-groove plate 41, avoiding the solidified dirt from affecting the stability of the U-groove plate 41 during movement, and preventing the pipe from deviating from the center of the limit ring 42; the rotating rod 6 2 rotates, driving the telescopic column 65 to rotate, and in the process of the U-shaped plate 61 moving upward, an upward thrust is generated on the arc panel 66, and the arc panel 66 pulls the telescopic end of the telescopic column 65 to move synchronously, and the telescopic end of the telescopic column 65 drives the arc panel 66 to rotate. In the process of the arc panel 66 rotating, the semicircular guide plate 58 drives the activated carbon plate 67 to move upward synchronously, and the activated carbon plate 67 drives the resistance plate 68 to move synchronously, so that the resistance plate 68 is always located on the movement track of the arc panel 66. Therefore, in the process of the arc panel 66 rotating, its own arc surface contacts the arc surface of the resistance plate 68 to promote its movement. At this time, the resistance plate 68 Plate 68 pulls the activated carbon plate 67 to slide along the concave surface of the semicircular guide plate 58. As the arc guide angle between the resistance plate 68 and the arc panel 66 gradually increases, the arc panel 66 will go over the resistance plate 68. At this time, the activated carbon plate 67 is reset by the spring force, and this process is repeated. Through the above cooperation, the activated carbon plate 67 slides back and forth on the inner wall of the semicircular guide plate 58, which effectively expands the activity range of the activated carbon plate 67. The activated carbon plate 67 is used to purify the harmful gases accumulated inside the semicircular guide plate 58 due to welding smoke before and after the processing, so as to avoid the untreated harmful gases from deteriorating the processing environment.

[0050] A method for using a welding device for producing a metal bellows comprises the following steps:

[0051] S1: First, put the metal bellows into the limiting ring 42. At this time, the U-groove plate 41 limits and stabilizes the limiting ring 42. When the pipe moves horizontally from the outside to the center of the base 1 to the inside of the limiting ring 42, the outer wall of the pipe first contacts the outer wall of the roller 47. The outer wall of the roller 47 generates a rotational force through the force of the pipe movement and the friction force of its outer wall.

[0052] S2: When the round roller 47 rotates within the inclined plate 46, it facilitates the entry of the pipe into the inner side of the inclined plate 46 near the center of the limit ring 42. At the same time, the resistance forces generated by pipes of different diameters against the inclined plate 46 are different. When the inclined plate 46 is subjected to the resistance force, its hinge axis starts to rotate, driving the inclined plate 46 to flip away from the center of the limit ring 42. Meanwhile, the inclined plate 46, restricted by the torsion spring, causes the round roller 47 to always adhere to the outer wall of the pipe.

[0053] S3: Meanwhile, the heating component 48 on the outer wall of the U-groove plate 41 is pre-activated to emit heat. Subsequently, the slide rail 2 drives the U-groove plates 41 on both sides to move towards the center of the base 1 through the linkage plate 21. The U-groove plate 41 drives the heating component 48 to move synchronously, thereby expanding the heating range. When the welding parts of the two pipes are butted inside the annular track 31, the annular track 31 drives the welding component 32 to perform a circular motion inside itself and welds the pipes in a circular motion.

[0054] S4: After the pipe enters the limit ring 42, it comes into contact with the arc surface of the outer wall of the arc-shaped clamping plate 44. During the movement of the pipe, it will resist the arc-shaped clamping plate 44 to move away from the center of the limit ring 42. The arc-shaped clamping plate 44 resists the telescopic end of the elastic telescopic rod 43 to contract synchronously. And through the setting of the spring inside the elastic telescopic rod 43, it is ensured that the concave surface of the arc-shaped clamping plate 44 always closely adheres to the outer wall of the pipe, that is, the rubber block 45 always adheres to the outer wall of the pipe, thereby increasing the friction between the arc-shaped clamping plate 44 and the pipe.

[0055] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A welding device for producing metal bellows, comprising a base (1), characterized in that: A slide rail (2) is arranged on the top of the base (1), a collection box is arranged on the back side of the slide rail (2), two linkage plates (21) are symmetrically arranged inside the slide rail (2), an L-shaped plate (3) is arranged at the top edge of the base (1), a circular track (31) is arranged on the side of the L-shaped plate (3) close to the axis of the base (1), and a welding assembly (32) is arranged inside the circular track (31); Two anti-deviation devices (4) are symmetrically arranged on the top of the base (1); an anti-falling device (5) is arranged inside the anti-deviation device (4); and an anti-obstruction device (6) is arranged inside the anti-falling device (5); The anti-deviation device (4) comprises two U-groove plates (41), the bottoms of the inner walls of the two U-groove plates (41) are fixedly mounted on the top of the linkage plate (21), the bottoms of the U-groove plates (41) are in contact with the top of the base (1), a limit ring (42) is fixedly mounted on the top of the U-groove plate (41), a plurality of elastic telescopic rods (43) are equidistantly mounted inside the limit ring (42), an arc-shaped clamping plate (44) is fixedly mounted on the side of the elastic telescopic rod (43) close to the center of the limit ring (42), a rubber block (45) is fixedly mounted inside the square groove of the arc-shaped clamping plate (44), a plurality of inclined plates (46) are equidistantly and hingedly mounted on the side of the limit ring (42) away from the center of the base (1), and a U-shaped groove is formed at one end of the inclined plate (46) away from the limit ring (42), a round roller (47) is rotatably mounted inside the U-shaped groove of the inclined plate (46), and a heating component (48) is fixedly mounted on the side of the U-groove plate (41) away from the axis of the base (1); The anti-falling device (5) comprises a transmission plate (51), a circular slotted frame (52), a sliding plate (53) and a telescopic arc plate (54); the bottom of the transmission plate (51) is hinged to a side of the heating component (48) close to the center of the base (1) through a torsion spring; the bottom of the circular slotted frame (52) is fixedly mounted on the top edge of the base (1); both sides of the sliding plate (53) are slidably mounted inside the circular slotted frame (52); and the telescopic end of the telescopic arc plate (54) is hinged to a side of the sliding plate (53) close to the axis of the base (1) at a side away from the axis of the base (1).

2. A welding device for producing metal bellows according to claim 1, characterized in that: The fixed ends of the plurality of elastic telescopic rods (43) are equidistantly distributed inside the limiting ring (42), a square groove is provided on one side of the arc-shaped clamping plate (44) close to the center of the limiting ring (42), and a torsion spring is provided between the plurality of inclined plates (46) and the limiting ring (42).

3. A welding device for producing metal bellows according to claim 2, characterized in that: The sliding plate (53) is hinged to the top of the transmission plate (51) at one side away from the center of the base (1), a torsion spring is provided between the telescopic end of the telescopic arc plate (54) and the sliding plate (53), and the telescopic end of the telescopic arc plate (54) is located inside the circular slotted frame (52).

4. A welding device for producing metal bellows according to claim 3, characterized in that: The anti-falling device (5) further comprises a heat-conducting component (55), a hot air gun (56), a spiral hose (57) and a semicircular guide plate (58); the heat-conducting component (55) is fixedly mounted on the outer wall of the sliding plate (53) at one side close to the center of the base (1); the hot air gun (56) is fixedly mounted inside the heat-conducting component (55) at one end away from the axis of the base (1); the spiral hose (57) is connected to and fixedly mounted between the heat-conducting component (55) and the heating component (48); and the bottom of the semicircular guide plate (58) is fixedly mounted on the top of the heat-conducting component (55).

5. A welding device for producing metal bellows according to claim 4, characterized in that: The anti-obstruction device (6) comprises a U-shaped plate (61), a rotating rod (62), a cam (63) and a U-shaped telescopic brush plate (64); the top of the U-shaped plate (61) is fixedly mounted on the bottom of the semicircular guide plate (58); the bottom of the rotating rod (62) is rotatably mounted on the top of the base (1); the cam (63) penetrates through the inside and is fixedly mounted on the outer wall of the bottom end of the rotating rod (62); and the bottom of the U-shaped telescopic brush plate (64) is slidably mounted on the top of the base (1) near one end of the rotating rod (62) via a spring.

6. A welding device for producing metal bellows according to claim 5, characterized in that: The outer wall at the top end of the rotating rod (62) passes through and is threadedly connected to the inside of the U-shaped plate (61); the bottom of the cam (63) contacts the top of the base (1); the arc surface of the outer wall of the fixed end of the U-shaped telescopic brush plate (64) is located on the movement trajectory of the cam (63); and the bottom of the end of the U-shaped telescopic brush plate (64) away from the rotating rod (62) contacts the bottom of the inner wall of the slide rail (2).

7. A welding device for producing metal bellows according to claim 6, characterized in that: The anti-obstruction device (6) further comprises a telescopic column (65), a plurality of arc panels (66), an activated carbon plate (67) and a resistance plate (68); the bottom of the telescopic column (65) is fixedly mounted on the top of the rotating rod (62); the outer wall of the telescopic end of the telescopic column (65) movably passes through the top of the U-shaped plate (61); the plurality of arc panels (66) are equidistantly and fixedly mounted on the outer wall of the telescopic end of the telescopic column (65); the outer wall of the activated carbon plate (67) is slidably mounted on the inner wall of the semicircular guide plate (58) via a spring; the resistance plate (68) is fixedly mounted on the inner wall of the activated carbon plate (67) on a side away from the telescopic column (65); and the arc surface of the resistance plate (68) is located on the movement trajectory of the arc panel (66).

8. A method for using a welding device for producing a metal bellows, using the welding device for producing a metal bellows according to claim 7, characterized in that: The following steps are involved: S1: First, the metal bellows is placed inside the limiting ring (42). At this time, the U-groove plate (41) limits and stabilizes the limiting ring (42). When the pipe moves horizontally from the outside to the center of the base (1) to the inside of the limiting ring (42), the outer wall of the pipe first contacts the outer wall of the round roller (47). The outer wall of the round roller (47) generates a rotational force through the force of the movement of the pipe and the friction force of its outer wall. S2: When the round roller (47) rotates inside the inclined plate (46), it is convenient for the pipe to enter the inside of the inclined plate (46) near the center of the limiting ring (42). At the same time, the resistance forces generated by pipes of different diameters on the inclined plate (46) are different. When the inclined plate (46) is subjected to the resistance force, its hinge shaft starts to rotate and drives the inclined plate (46) to flip in a direction away from the center of the limiting ring (42). At the same time, the inclined plate (46) is restricted by the torsion spring to force the round roller (47) to always fit the outer wall of the pipe. S3: At the same time, the heating component (48) on the outer wall of the U-groove plate (41) is pre-activated to emit heat, and the slide rail (2) subsequently drives the U-groove plates (41) on both sides to move toward the center of the base (1) through the linkage plate (21). The U-groove plates (41) drive the heating component (48) to move synchronously to expand the heating range. When the welding parts of the pipes on both sides are butted inside the annular track (31), the annular track (31) drives the welding component (32) to make an annular movement inside itself, and performs an annular movement welding on the pipes; S4: After the pipe enters the limiting ring (42), it contacts the outer wall arc surface of the arc clamping plate (44). During the movement of the pipe, it will resist the arc clamping plate (44) and move away from the center of the limiting ring (42). The arc clamping plate (44) resists the telescopic end of the elastic telescopic rod (43) and shrinks synchronously. The spring built into the elastic telescopic rod (43) is set to make the concave surface of the arc clamping plate (44) always close to the outer wall of the pipe, that is, the rubber block (45) always fits the outer wall of the pipe, thereby increasing the friction between the arc clamping plate (44) and the pipe.

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