Novel butt joint process for corrugated pipes

Abstract

The invention discloses a novel butt joint technology of corrugated pipes, the technology uses butt joint equipment, the equipment comprises a main body unit, a welding unit and a cleaning unit, the main body unit comprises a base and a clamping butt joint mechanism fixedly connected with the top of the base, the fixing ring is located above the base, the connecting rings are fixedly connected with the left end and the right end of the fixing ring, the outer gear ring is movably arranged in the fixing ring, the driving assembly is used for driving the outer gear ring to rotate, the outer gear ring and the fixing ring fixedly rotate, and a first hydraulic cylinder is fixedly installed on the inner top wall of the outer gear ring; the piston end of the first hydraulic cylinder is fixedly connected with a welding gun, and the cleaning unit comprises a spiral swing sweeping mechanism and a spiral swing starting mechanism. The cleaning brush can rotate along with the welding gun and move left and right, the cleanliness of a welding connector is ensured in a composite cleaning mode, the welding quality is improved, and in addition, the service life of the cleaning brush can be prolonged in a circulating cleaning mode.

Description

Technical Field

[0001] The invention relates to the technical field of bellows welding, and in particular to a novel butt joint process for bellows. Background Art

[0002] In the manufacturing and application of bellows, the butt joint process is a key link to ensure the connection strength and service life of bellows. The traditional bellows butt joint method usually relies on adding steel rings at the welding joints to enhance the stability of the connection. Although this process guarantees the connection strength of the bellows to a certain extent, it also significantly increases the production cost. In addition, the welding between the steel ring and the bellows body may introduce additional stress concentration points, and long-term use may cause safety hazards such as leakage or breakage, thereby affecting the overall product quality and reliability. In view of this, the current butt joint process has been innovated to directly adopt a welding butt joint method between corrugations. This change not only abandons the traditional butt joint requirements that rely on steel rings, effectively reduces production costs, but also avoids the various adverse effects that may be caused by the use of steel rings.

[0003] In the process of bellows welding, the cleanliness of the welding interface directly affects the quality of the weld. To ensure the welding quality, it is usually necessary to clean the surface of the welding interface to remove grease, oxides and other impurities.

[0004] At present, the common bellows welding devices on the market are usually equipped with a cleaning brush, which can rotate and clean around the bellows welding interface. The cleaning method is mainly to contact the welding interface with the bristles and complete a circle of cleaning. However, this cleaning method only relies on rotational motion and lacks the left and right swing function of the cleaning brush, resulting in limited cleaning effect on stubborn stains on the interface surface. The cleaning effect is difficult to meet the requirements of high-quality welding, which in turn affects the welding accuracy and weld strength. In addition, it only relies on rotational motion for cleaning, and the cleaning brush always uses a fixed area for cleaning during cleaning, which can easily accelerate the wear rate of the cleaning brush and affect the service life of the cleaning brush. Summary of the invention

[0005] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a new type of butt joint process for a corrugated pipe, the process uses a butt joint device, the device includes a main unit, a welding unit and a cleaning unit, the process includes the following steps:

[0007] Step 1: First, place the two bellows on the two lower semicircular clamps respectively, and ensure that the lower semicircular convex strips on the inner wall of the lower semicircular clamps are engaged with the troughs of the bellows. At the same time, it should be noted that a lower semicircular convex strip adjacent to the welding gun needs to be engaged with the trough next to the interface of the bellows; then, the upper semicircular clamp is driven by the second hydraulic cylinder to lower the upper semicircular clamp, and the upper semicircular convex strips on the inner wall are engaged with the top trough of the bellows, so as to achieve a stable fixation of the bellows;

[0008] Step 2: Then, start the second drive motor, which drives the forward and reverse screws to rotate, and a pair of movable plates move toward each other along the forward and reverse screws under the guidance and limiting action of the guide rails, driving the two clamped bellows to gradually approach each other until the interfaces of the two bellows are completely fitted;

[0009] Step 3: Then, the welding gun is slowly lowered by driving the first hydraulic cylinder until the welding gun muzzle is close to the interface of the bellows. During this process, the connecting sleeve, the bracket plate and the push rod also move synchronously until the arc surface at the bottom of the push rod is located between the two adjacent spiral swing starting surfaces, and at the same time, the No. 1 cleaning area at the bottom of the cleaning brush is movably fitted with the interface of the two bellows;

[0010] Step 4: Finally, start the first drive motor, the output end of the first drive motor drives the gear to rotate, and then drives the outer gear ring meshing with it to rotate. The outer gear ring drives the welding gun to rotate and weld around the bellows interface through the first hydraulic cylinder. During the rotation welding process, the connecting sleeve, the bracket plate and the push rod in the cleaning unit also rotate accordingly. The push rod continuously contacts the spiral swing starting surface during the rotation process, that is, the push rod continuously slides from the bottom of one side of the spiral swing starting surface to the top, and then slides to the bottom of the other side; when the push rod slides from the bottom to the top, the push rod is driven by the force and transmitted to the inclined surface, and the inclined surface The force is applied to the moving rod to move through the push rod, and the moving rod drives the cleaning brush to move and clean. At this time, the first spring is compressed, and when the cleaning brush moves and cleans, the No. 1 cleaning area, the No. 2 cleaning area and the No. 3 cleaning area at the bottom of the cleaning brush clean the interface of the bellows in turn; when the push rod slides from the top of the spiral swing starting surface to the bottom of the other side, the push rod is gradually reset under the action of the rebound force of the second spring, and at the same time, the inclined surface, the push rod and the moving rod are also gradually reset under the action of the first spring. During the reset process, the moving rod drives the cleaning brush to gradually reset, and the cleaning brush returns in reverse order, forming a complete cleaning cycle;

[0011] Wherein, the main unit comprises a base and a clamping docking mechanism fixedly connected to the top of the base;

[0012] The welding unit is located in the middle of the base and is fixedly connected to the base. The welding unit includes a fixing ring located above the base, supporting legs fixedly connected to the front and rear sides of the fixing ring, a connecting ring fixedly connected to the left and right ends of the fixing ring, an outer gear ring movably arranged inside the fixing ring, and a driving assembly for driving the outer gear ring to rotate. The bottom end of the supporting leg is fixedly connected to the upper surface of the base, the outer gear ring is fixedly rotated with the fixing ring, a first hydraulic cylinder is fixedly installed on the inner top wall of the outer gear ring, and a welding gun is fixedly connected to the piston end of the first hydraulic cylinder;

[0013] The cleaning unit is connected to the welding gun and the clamping and docking mechanism. The cleaning unit includes a spiral swing cleaning mechanism fixedly connected to the welding gun and a spiral swing starting mechanism fixedly connected to the clamping and docking mechanism and the spiral swing cleaning mechanism.

[0014] As a preferred scheme of the new docking process of the corrugated pipe described in the present invention, the clamping docking mechanism includes a pair of side plates symmetrically fixed to the upper surface of the base, positive and negative screw rods rotatably connected to the pair of side plates, a pair of movable plates symmetrically threadedly connected to the positive and negative screw rods, a guide slide rail fixedly connected to the upper surface of the base, a lower semicircular clamping plate fixedly connected to the top of the movable plate, and a pressing assembly located directly above the lower semicircular clamping plate, a plurality of lower semicircular convex strips are fixedly connected to the inner wall of the lower semicircular clamping plate, the lower semicircular convex strips are adapted to the troughs of the corrugated pipe, and the distance between the plurality of lower semicircular convex strips is an integer multiple of the distance between two adjacent troughs of the corrugated pipe, a second drive motor is fixedly installed on one of the side plates, and the output end of the second drive motor is fixedly connected to one end of the positive and negative screw rods.

[0015] As a preferred solution of the novel docking process of the corrugated pipe of the present invention, a pair of movable plates are provided with guide grooves at the bottom, and the guide grooves are adapted to slide with the guide rails.

[0016] As a preferred solution of the new docking process of the bellows described in the present invention, the pressing assembly includes a gantry fixedly connected to the top of the front and rear sides of the movable plate, a second hydraulic cylinder fixedly connected to the top of the gantry, and an upper semicircular clamp fixedly connected to the bottom piston end of the second hydraulic cylinder, the upper semicircular clamp and the lower semicircular clamp are symmetrically arranged up and down, the inner wall of the upper semicircular clamp is fixedly connected with an upper semicircular convex strip at the corresponding position of the lower semicircular convex strip, and the upper semicircular convex strip is adapted to the trough of the bellows.

[0017] As a preferred solution of the new docking process of the corrugated pipe described in the present invention, the driving assembly includes a fixing plate fixedly connected to the front side of the fixing ring, a first driving motor fixedly connected to the fixing plate, and a gear fixedly connected to the output end of the first driving motor, and the gear is meshedly connected to one side of the outer gear ring.

[0018] As a preferred solution of the novel butt joint process of the bellows described in the present invention, a through groove is provided on the front side of the fixing ring, and the gear movably passes through the through groove.

[0019] As a preferred solution of the new docking process of the corrugated pipe described in the present invention, wherein: the spiral swinging cleaning mechanism includes a connecting sleeve fixedly connected to the front side of the welding gun, the bottom and left side of the connecting sleeve are both open structures, a moving rod is slidably connected inside the connecting sleeve, the bottom end of the moving rod movably passes through the connecting sleeve and is fixedly connected to a cleaning brush, a first spring is fixedly connected between the moving rod and the right inner wall of the connecting sleeve, a guide slide rod is fixedly connected to the right side of the moving rod, and the end of the guide slide rod away from the moving rod is slidably connected to the right side of the connecting sleeve; a push rod is fixedly connected to the left side of the moving rod, and the end of the push rod away from the moving rod is set as a downward inclined slope.

[0020] As a preferred solution of the new docking process of the bellows described in the present invention, the lower surface of the cleaning brush is divided into cleaning area No. 1, cleaning area No. 2 and cleaning area No. 3 from left to right. When the cleaning brush rotates around the two bellows interfaces and simultaneously performs spiral swings, cleaning area No. 1 first cleans the interface, followed by cleaning area No. 2 and cleaning area No. 3 in sequence, and then returns in reverse order, and this is repeated continuously, and contact with the interface is always maintained during the cleaning stage of each area.

[0021] As a preferred solution of the new docking process of the corrugated pipe described in the present invention, the spiral swing starting mechanism includes a spiral swing pushing assembly fixedly connected to the bottom of the left side of the connecting sleeve and a spiral swing starting assembly fixedly connected to the upper semicircular clamping plate and the lower semicircular clamping plate on one side, and the bottom end of the spiral swing pushing assembly is connected to the spiral swing starting assembly.

[0022] As a preferred solution of the new type of docking process of the bellows described in the present invention, the spiral swing pushing assembly includes a bracket plate fixedly connected to the bottom of the left side of the connecting sleeve, a pushing rod is slidably penetrated on the horizontal plate of the bracket plate, a connecting plate is fixedly connected to the push rod below the bracket plate, a second spring is fixedly connected between the connecting plate and the bottom of the bracket plate, the second spring is movably sleeved on the outside of the push rod, the upper and lower surfaces of the push rod are both set as arc surfaces, and the arc surface at the upper end of the push rod is in active contact with the inclined surface;

[0023] The spiral swing starting assembly includes a pair of semicircular rings symmetrically arranged in the upper and lower parts, and the pair of semicircular rings are fixedly connected to the upper semicircular clamping plate and the lower semicircular clamping plate respectively, and when a pair of bellows are docked, the outer side surfaces of the semicircular rings are in active contact with the arc surface of the bottom end of the push rod, and when the bellows are clamped and fixed, the pair of semicircular rings are merged into a complete circular structure, and a spiral swing starting surface is fixedly connected to the outer side surface of the circular structure in a ring array, and the spiral swing starting surface is an arc-shaped convex structure, and each time the arc surface of the bottom end of the push rod passes through the spiral swing starting surface, the cleaning area No. 1, the cleaning area No. 2 and the cleaning area No. 3 on the cleaning brush will perform cleaning operations in sequence, and then return in the opposite order to form a complete cleaning cycle.

[0024] Beneficial effects of the present invention:

[0025] 1. The cleaning brush in the present invention can rotate synchronously with the rotation of the welding gun, so that the interface of the bellows can be effectively cleaned. In addition, while the cleaning brush rotates for cleaning, the cleaning brush can be moved back and forth left and right for cleaning through the coordinated use of the spiral swing starting surface, the push rod, the inclined surface, the moving rod, the first spring, the second spring, etc. This composite cleaning method can further improve the cleaning effect of the cleaning brush, ensure the cleanliness of the welding interface, and thus improve the welding quality.

[0026] 2. In the present invention, each time the arc surface at the bottom end of the push rod passes through the spiral swing starting surface, the No. 1 cleaning area, the No. 2 cleaning area and the No. 3 cleaning area on the cleaning brush will perform cleaning operations in sequence, and then return in the opposite order to form a complete cleaning cycle. This design not only ensures the comprehensiveness of the cleaning, but also effectively avoids excessive wear of a certain part of the cleaning brush due to long-term continuous friction. Through this cyclic cleaning method, the service life of the cleaning brush can be extended, and the replacement frequency and maintenance cost can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0028] Figure 1 The present invention is a flowchart of a novel butt-jointing process for a corrugated pipe.

[0029] Figure 2 The present invention is a schematic diagram of the overall structure of a docking device used in a new type of docking process for a corrugated pipe.

[0030] Figure 3It is a structural schematic diagram of a clamping docking mechanism of a new docking process for a corrugated pipe of the present invention.

[0031] Figure 4 The diagram is a partial cross-sectional structural diagram of a clamping butt joint mechanism of a novel butt joint process for a corrugated pipe according to the present invention.

[0032] Figure 5 The present invention is a schematic diagram of the connection structure of a welding unit and a cleaning unit in a new type of butt-jointing process for a bellows.

[0033] Figure 6 The present invention is a schematic diagram of the connection structure of a cleaning unit and a welding gun in a new type of butt-jointing process for a bellows.

[0034] Figure 7 It is a structural schematic diagram of a cleaning unit of a new type of butt joint process for a bellows according to the present invention.

[0035] Figure 8 It is a structural schematic diagram of a spiral swing starting assembly of a new type of butt joint process of a bellows according to the present invention.

[0036] Fig. 9 The present invention is a schematic diagram of the connection structure of a spiral swing cleaning mechanism and a spiral swing pushing component in a new type of docking process of a bellows.

[0037] Fig.10 for Fig. 9 Schematic diagram of the cross-sectional structure.

[0038] Fig.11 The present invention is a schematic diagram of the structure of a cleaning brush at the interface of a bellows in a new type of docking process of the bellows.

[0039] Fig.12 It is a structural schematic diagram of a new type of butt joint process of a bellows according to the present invention.

[0040] In the figure: 100, main unit; 101, base; 102, clamping docking mechanism; 102-1, side plate; 102-2, positive and negative screw rods; 102-3, moving plate; 102-4, guide rail; 102-5, lower semicircular clamping plate; 102-6, pressing assembly; 102-61, gantry; 102-62, second hydraulic cylinder; 102-63, upper semicircular clamping plate; 102-64, upper semicircular convex strip; 102-7, lower semicircular convex strip; 102-8, second drive motor; 200, welding unit; 201, fixing ring; 202, supporting leg; 203, connecting ring; 204, outer gear ring; 205, first hydraulic cylinder; 206, welding gun; 207, fixing plate; 208, first drive motor; 209, gear Wheel; 210, through groove; 300, cleaning unit; 301, spiral swing cleaning mechanism; 301-1, connecting sleeve; 301-2, moving rod; 301-3, cleaning brush; 301-31, cleaning area No. 1; 301-32, cleaning area No. 2; 301-33, cleaning area No. 3; 301-4, first spring; 301-5, guide slide rod; 301-6, push rod; 301-7, inclined plane; 302, spiral swing starting mechanism; 302-1, spiral swing pushing assembly; 302-11, bracket plate; 302-12, pushing rod; 302-13, connecting plate; 302-14, second spring; 302-2, spiral swing starting assembly; 302-21, semicircular ring; 302-22, spiral swing starting surface. DETAILED DESCRIPTION

[0041] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0042] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0043] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0044] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0045] Reference Figure 2-10 , as an embodiment of the present invention, provides a new butt joint process for a corrugated pipe, the process uses a butt joint device, such as Figure 2 The device includes a main unit 100, a welding unit 200 and a cleaning unit 300.

[0046] Among them, Figure 2 , the main unit 100 includes a base 101 and a clamping docking mechanism 102 fixedly connected to the top of the base 101;

[0047] like Figure 3-4 The clamping docking mechanism 102 includes a pair of side plates 102-1 symmetrically fixed to the upper surface of the base 101, positive and negative screw rods 102-2 rotatably connected to the pair of side plates 102-1, a pair of movable plates 102-3 symmetrically threadedly connected to the positive and negative screw rods 102-2, a guide slide rail 102-4 fixedly connected to the upper surface of the base 101, a lower semicircular clamping plate 102-5 fixedly connected to the top of the movable plate 102-3, and a pressing component 102-6 located directly above the lower semicircular clamping plate 102-5, and a plurality of lower semicircular convex strips 102-7 are fixedly connected to the inner wall of the lower semicircular clamping plate 102-5. 2-7 is adapted to the trough of the bellows, and the distance between the plurality of lower semicircular convex strips 102-7 is an integer multiple of the distance between two adjacent troughs of the bellows, a second drive motor 102-8 is fixedly mounted on one of the side plates 102-1, and the output end of the second drive motor 102-8 is fixedly connected to one end of the forward and reverse screw rods 102-2, and a pair of movable plates 102-3 are provided with guide grooves at the bottom, and the guide grooves are adapted to slide with the guide rails 102-4, and the movement of the movable plate 102-3 can be guided by the cooperation of the guide rails 102-4 and the guide grooves, so that the movable plate 102-3 can move smoothly;

[0048] like Figure 4The pressing assembly 102-6 includes a gantry 102-61 fixedly connected to the top of the front and rear sides of the moving plate 102-3 by bolts, a second hydraulic cylinder 102-62 fixedly connected to the top of the gantry 102-61 by bolts, and an upper semicircular clamping plate 102-63 fixedly connected to the bottom piston end of the second hydraulic cylinder 102-62 by bolts. The upper semicircular clamping plate 102-63 and the lower semicircular clamping plate 102-5 are symmetrically arranged up and down, and the inner wall of the upper semicircular clamping plate 102-63 is fixedly connected with an upper semicircular convex strip 102-64 at the corresponding position of the lower semicircular convex strip 102-7, and the upper semicircular convex strip 102-64 is adapted to the trough of the corrugated pipe. By providing the upper semicircular convex strip 102-64 and the lower semicircular convex strip 102-7, the upper semicircular clamping plate 102-63 and the lower semicircular clamping plate 102-5 can better clamp and fix the bellows. In addition, after the upper semicircular clamping plate 102-63 and the lower semicircular clamping plate 102-5 are clamped and fixed, they are combined into a complete circular structure, and the center of the circle is on the same horizontal line as the center of the outer gear ring 204 and the fixing ring 201.

[0049] When in use, first place the two bellows on the two lower semicircular clamps 102-5 respectively, and ensure that the lower semicircular convex strips 102-7 on the inner wall of the lower semicircular clamps 102-5 are engaged with the troughs of the bellows. At the same time, it should be noted that a lower semicircular convex strip 102-7 adjacent to the welding gun 206 needs to be engaged with the trough next to the bellows interface (the advantage of this arrangement is that the position of the spiral swing starting assembly 302-2 can be positioned. When the two bellows interfaces are completely fitted together, the spiral swing starting assembly 302-2 corresponds to the push rod 302-12); then, the upper semicircular clamp 102-63 is driven by the second hydraulic cylinder 102-62 to lower it, and the upper semicircular convex strips 102-64 on its inner wall are engaged with the top trough of the bellows, thereby achieving a firm fixation of the bellows.

[0050] like Figure 5-6 The welding unit 200 is located in the middle of the base 101 and is fixedly connected to the base 101. The welding unit 200 includes a fixing ring 201 located above the base 101, a supporting leg 202 fixedly connected to the front and rear sides of the fixing ring 201, a connecting ring 203 fixedly connected to the left and right ends of the fixing ring 201, an outer gear ring 204 movably arranged inside the fixing ring 201, and a driving assembly for driving the outer gear ring 204 to rotate. The bottom end of the supporting leg 202 is fixedly connected to the upper surface of the base 101 by bolts, and the outer gear ring 204 is fixedly rotated with the fixing ring 201 by a bearing. A first hydraulic cylinder 205 is fixedly installed on the inner top wall of the outer gear ring 204 by bolts, and a welding gun 206 is fixedly connected to the piston end of the first hydraulic cylinder 205 by bolts;

[0051] The driving assembly includes a fixing plate 207 fixedly connected to the front side of the fixing ring 201, a first driving motor 208 fixedly connected to the fixing plate 207 by bolts, and a gear 209 fixedly connected to the output end of the first driving motor 208 by bolts. The gear 209 is meshedly connected to one side of the outer gear ring 204. A through slot 210 is provided on the front side of the fixing ring 201, and the gear 209 is movable through the through slot 210.

[0052] When the interfaces of the two fixed bellows need to be fitted together, the second drive motor 102-8 is started, and the second drive motor 102-8 drives the forward and reverse screw rods 102-2 to rotate. A pair of movable plates 102-3 move toward each other along the forward and reverse screw rods 102-2 under the guidance and limiting action of the guide rails 102-4, driving the two clamped bellows to gradually approach until the interfaces of the two bellows are completely fitted.

[0053] Cleaning unit 300, such as Figure 6 The cleaning unit 300 is connected to the welding gun 206 and the clamping and docking mechanism 102. The cleaning unit 300 includes a spiral swing cleaning mechanism 301 fixedly connected to the welding gun 206 and a spiral swing starting mechanism 302 fixedly connected to the clamping and docking mechanism 102 and the spiral swing cleaning mechanism 301.

[0054] Specifically, Fig.10 The spiral swing cleaning mechanism 301 includes a connecting sleeve 301-1 fixedly connected to the front side of the welding gun 206, the bottom and left side of the connecting sleeve 301-1 are both open structures, the connecting sleeve 301-1 is adapted to slide with a moving rod 301-2 inside, the bottom end of the moving rod 301-2 movably passes through the connecting sleeve 301-1 and is fixedly connected with a cleaning brush 301-3, a first spring 301-4 is fixedly connected between the moving rod 301-2 and the right inner wall of the connecting sleeve 301-2, a guide slide rod 301-5 is fixedly connected to the right side of the moving rod 301-2, and the end of the guide slide rod 301-5 away from the moving rod 301-2 slides with the right side of the connecting sleeve 301-1 The connection is made by setting a guide slide rod 301-5, which can improve the stability of the moving rod 301-2 and enable it to move smoothly when subjected to force; a push rod 301-6 is fixedly connected to the left side of the moving rod 301-2, and the push rod 301-6 extends to the outside of the connecting sleeve 301-1 at one end away from the moving rod 301-2 and is set to a downwardly inclined slope 301-7. When the slope 301-7 is subject to a driving force, the moving rod 301-2 can be pushed to move by the push rod 301-6, so that the cleaning brush 301-3 can be moved for cleaning during rotation cleaning, which can improve the cleaning effect and ensure the cleanliness of the bellows interface, thereby improving the welding quality.

[0055] Specifically, Fig.11The lower surface of the cleaning brush 301-3 is divided into cleaning area No. 1 301-31, cleaning area No. 2 301-32 and cleaning area No. 3 301-33 from left to right. When the cleaning brush 301-3 rotates around the two bellows interfaces and performs spiral swing at the same time, cleaning area No. 1 301-31 cleans the interfaces first, followed by cleaning area No. 2 301-32 and cleaning area No. 3 301-33 in sequence, and then returns in reverse order, and repeats this process continuously, and keeps in contact with the interfaces at all times during the cleaning stage of each area. This design not only ensures the comprehensiveness of cleaning, but also effectively avoids excessive wear of a certain part of the cleaning brush 301-3 due to long-term continuous friction. Through this cyclic cleaning method, the service life of the cleaning brush can be extended, and the replacement frequency and maintenance cost can be reduced.

[0056] Specifically, Figure 7 The spiral swing starting mechanism 302 includes a spiral swing pushing component 302-1 fixedly connected to the bottom left side of the connecting sleeve 301-1 and a spiral swing starting component 302-2 fixedly connected to the upper semicircular clamping plate 102-63 and the lower semicircular clamping plate 102-5 on one side. The bottom end of the spiral swing pushing component 302-1 is connected to the spiral swing starting component 302-2. Through the coordinated use of the spiral swing pushing component 302-1 and the spiral swing starting component 302-2, a driving force can be applied to the inclined surface 301-7 during the rotational cleaning process, so that the cleaning brush 301-3 can also perform spiral swing cleaning during rotational cleaning.

[0057] Furthermore, Fig. 9 The spiral swing pushing assembly 302-1 includes a bracket plate 302-11 fixedly connected to the left bottom of the connecting sleeve 301-1, a pushing rod 302-12 is slidably penetrated on the horizontal plate of the bracket plate 302-11, and a connecting plate 302-13 is fixedly connected to the pushing rod 302-12 below the bracket plate 302-11, and a second spring 302-14 is fixedly connected between the connecting plate 302-13 and the bottom of the bracket plate 302-11, and the second spring 302-14 is movably sleeved on the outside of the pushing rod 302-12, and the upper and lower surfaces of the pushing rod 302-12 are both set to arc surfaces, and the arc surface at the upper end of the pushing rod 302-12 is movably in contact with the inclined surface 301-7.

[0058] like Figure 8The spiral swing starter assembly 302-2 includes a pair of semicircular rings 302-21 symmetrically arranged in an upper and lower manner, and the pair of semicircular rings 302-21 are respectively fixedly connected to the upper semicircular clamping plate 102-63 and the lower semicircular clamping plate 102-5, and when the pair of bellows are docked, the outer side surface of the semicircular ring 302-21 is in active contact with the arc surface at the bottom end of the push rod 302-12, and when the bellows are clamped and fixed, the pair of semicircular rings 302-21 are combined into a complete circular structure, and the spiral swing starter surface is fixedly connected to the outer side surface of the circular structure in a circular array. 302-22, the spiral swing start surface 302-22 is an arc-shaped convex structure. By setting the arc-shaped convex structure, when the push rod 302-12 slides down from the top of the arc, the push rod 302-12 can be gradually reset under the action of the second spring 302-14, so that the inclined surface 301-7 is gradually reset under the action of the rebound force of the first spring 301-4, and then the cleaning brush 301-3 is pushed by the moving rod 301-2 to move and clean, and can also be reset after moving back, thus laying the foundation for the cleaning brush 301-3 to move back and forth continuously. When the arc surface at the bottom end of the push rod 302-12 passes through the spiral swing start surface 302-22 each time, the cleaning area No. 1 301-31, the cleaning area No. 2 301-32 and the cleaning area No. 3 301-33 on the cleaning brush 301-3 will perform cleaning operations in sequence, and then return in the opposite order to form a complete cleaning cycle.

[0059] The process steps for butt jointing bellows using the above equipment are as follows (such as Figure 1 and Fig.12 ):

[0060] Step 1: First, place the two bellows on the two lower semicircular clamping plates 102-5 respectively, and ensure that the lower semicircular convex strips 102-7 on the inner wall of the lower semicircular clamping plates 102-5 are engaged with the troughs of the bellows. At the same time, it should be noted that a lower semicircular convex strip 102-7 adjacent to the welding gun 206 needs to be engaged with the trough next to the interface of the bellows; then, the upper semicircular clamping plate 102-63 is driven by the second hydraulic cylinder 102-62 to lower it, and the upper semicircular convex strips 102-64 on its inner wall are engaged with the top trough of the bellows, so as to achieve a stable fixation of the bellows;

[0061] Step 2: Then, start the second drive motor 102-8, which drives the forward and reverse screw rods 102-2 to rotate, and a pair of movable plates 102-3 move toward each other along the forward and reverse screw rods 102-2 under the guidance and limiting action of the guide rail 102-4, driving the two clamped bellows to gradually approach each other until the interfaces of the two bellows are completely fitted;

[0062] Step 3: Then, the welding gun 206 is slowly lowered by driving the first hydraulic cylinder 205 until the muzzle of the welding gun 206 is close to the interface of the bellows. During this process, the connecting sleeve 301-1, the bracket plate 302-11, and the push rod 302-12 also move synchronously until the arc surface at the bottom end of the push rod 302-12 is located between the two adjacent spiral swing starting surfaces 302-22, and at the same time, the No. 1 cleaning area 301-31 at the bottom of the cleaning brush 301-3 is movably fitted with the interface of the two bellows;

[0063] Step 4: Finally, start the first drive motor 208, and the output end of the first drive motor 208 drives the gear 209 to rotate, thereby driving the outer gear ring 204 meshing with it to rotate, and the outer gear ring 204 drives the welding gun 206 to rotate and weld around the bellows interface through the first hydraulic cylinder 205. During the rotation welding process, the connecting sleeve 301-1, the bracket plate 302-11, and the push rod 302-12 in the cleaning unit 300 also rotate accordingly. The push rod 302-12 continuously contacts the spiral swing starting surface 302-22 during the rotation process, that is, the push rod 302-12 continuously slides from the bottom of one side of the spiral swing starting surface 302-22 to the top, and then slides to the bottom of the other side; when the push rod 302-12 slides from the bottom to the top, the push rod 302-12 is driven by the driving force and transmitted to the inclined surface 301-7, and the inclined surface 301-7 is driven by the push rod 301-6 The movable moving rod 301-2 moves, and the movable rod 301-2 drives the cleaning brush 301-3 to move and clean. At this time, the first spring 301-4 is compressed, and when the cleaning brush 301-3 moves and cleans, the No. 1 cleaning area 301-31, the No. 2 cleaning area 301-32 and the No. 3 cleaning area 301-33 at the bottom of the cleaning brush 301-3 clean the bellows interface in turn; when the push rod 302-12 slides from the top of the spiral swing starting surface 302-22 to the bottom of the other side, the push rod 302-12 is gradually reset under the action of the rebound force of the second spring 302-14. At the same time, the inclined surface 301-7, the push rod 301-6 and the movable rod 301-2 are also gradually reset under the action of the first spring 301-4. During the resetting process, the movable rod 301-2 drives the cleaning brush 301-3 to gradually reset, and the cleaning brush 301-3 returns in reverse order to form a complete cleaning cycle.

[0064] It is worth noting that the entire device is controlled by a controller. Since the controller is a commonly used device and belongs to the existing mature technology, its electrical connection relationship and specific circuit structure will not be described in detail here.

[0065] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A new type of butt joint process for bellows, characterized in that: The process uses a docking device, which includes a main unit (100), a welding unit (200) and a cleaning unit (300). The process includes the following steps: Step 1: First, place the two bellows on the two lower semicircular clamps (102-5) respectively, and ensure that the lower semicircular convex strips (102-7) on the inner wall of the lower semicircular clamp (102-5) are engaged with the trough of the bellows. At the same time, it should be noted that a lower semicircular convex strip (102-7) adjacent to the welding gun (206) needs to be engaged with the trough next to the interface of the bellows; then, the upper semicircular clamp (102-63) is driven by the second hydraulic cylinder (102-62) to lower the upper semicircular clamp (102-63), and the upper semicircular convex strips (102-64) on the inner wall are engaged with the top trough of the bellows, so as to achieve a stable fixation of the bellows; Step 2: Then, the second drive motor (102-8) is started, and the second drive motor (102-8) drives the forward and reverse screw rods (102-2) to rotate, and a pair of movable plates (102-3) move toward each other along the forward and reverse screw rods (102-2) under the guidance and limiting action of the guide rail (102-4), driving the two clamped bellows to gradually approach each other until the interfaces of the two bellows are completely fitted; Step 3: Then, the welding gun (206) is slowly lowered by driving the first hydraulic cylinder (205) until the muzzle of the welding gun (206) is close to the interface of the bellows. During this process, the connecting sleeve (301-1), the bracket plate (302-11), and the push rod (302-12) also move synchronously until the arc surface at the bottom end of the push rod (302-12) is located between two adjacent spiral swing starting surfaces (302-22), and at the same time, the No. 1 cleaning area (301-31) at the bottom of the cleaning brush (301-3) is movably fitted with the interface of the two bellows; Step 4: Finally, the first drive motor (208) is started, and the output end of the first drive motor (208) drives the gear (209) to rotate, thereby driving the outer gear ring (204) meshed with the first drive motor (208) to rotate. The outer gear ring (204) drives the welding gun (206) to rotate and weld around the bellows interface through the first hydraulic cylinder (205). During the rotation welding process, the connecting sleeve (301-1), the bracket plate (302-11), and the push rod (302-12) in the cleaning unit (300) are ) also rotates accordingly, and the push rod (302-12) continuously contacts the spiral swing starting surface (302-22) during the rotation process, that is, the push rod (302-12) continuously slides from the bottom of one side of the spiral swing starting surface (302-22) to the top, and then slides to the bottom of the other side; when the push rod (302-12) slides from the bottom to the top, the push rod (302-12) receives the driving force and transmits it to the inclined surface (301-7), and the inclined surface (301-7) receives the force through the push rod (301-6) to carry The movable rod (301-2) moves, and the movable rod (301-2) drives the cleaning brush (301-3) to move and clean. At this time, the first spring (301-4) is compressed, and when the cleaning brush (301-3) moves and cleans, the first cleaning area (301-31), the second cleaning area (301-32) and the third cleaning area (301-33) at the bottom of the cleaning brush (301-3) sequentially clean the interface of the bellows; when the push rod (302-12) moves from the spiral swing starting surface (302- 22) When the top slides to the bottom of the other side, the push rod (302-12) gradually resets under the action of the rebound force of the second spring (302-14), and at the same time, the inclined surface (301-7), the push rod (301-6) and the moving rod (301-2) also gradually reset under the action of the first spring (301-4). During the reset process, the moving rod (301-2) drives the cleaning brush (301-3) to gradually reset, and the cleaning brush (301-3) returns in reverse order, forming a complete cleaning cycle; Wherein, the main unit (100) comprises a base (101) and a clamping docking mechanism (102) fixedly connected to the top of the base (101); The welding unit (200) is located in the middle of the base (101) and is fixedly connected to the base (101). The welding unit (200) comprises a fixing ring (201) located above the base (101), a supporting leg (202) fixedly connected to the front and rear sides of the fixing ring (201), a connecting ring (203) fixedly connected to the left and right ends of the fixing ring (201), an outer gear ring (204) movably arranged inside the fixing ring (201), and a driving assembly for driving the outer gear ring (204) to rotate. The bottom end of the supporting leg (202) is fixedly connected to the upper surface of the base (101), the outer gear ring (204) is fixedly rotated with the fixing ring (201), and a first hydraulic cylinder (205) is fixedly installed on the inner top wall of the outer gear ring (204), and a welding gun (206) is fixedly connected to the piston end of the first hydraulic cylinder (205); The cleaning unit (300) is connected to the welding gun (206) and the clamping and docking mechanism (102), and comprises a spiral oscillating cleaning mechanism (301) fixedly connected to the welding gun (206) and a spiral oscillating starting mechanism (302) fixedly connected to the clamping and docking mechanism (102) and the spiral oscillating cleaning mechanism (301).

2. The novel butt joint process of the corrugated pipe according to claim 1 is characterized in that: The clamping docking mechanism (102) comprises a pair of side plates (102-1) symmetrically fixed to the upper surface of the base (101), forward and reverse screw rods (102-2) rotatably connected to the pair of side plates (102-1), a pair of movable plates (102-3) symmetrically threadedly connected to the forward and reverse screw rods (102-2), a guide slide rail (102-4) fixedly connected to the upper surface of the base (101), a lower semicircular clamping plate (102-5) fixedly connected to the top of the movable plate (102-3), and a guide rail (102-4) located directly above the lower semicircular clamping plate (102-5). A pressing assembly (102-6) is provided, the inner wall of the lower semicircular clamping plate (102-5) is fixedly connected with a plurality of lower semicircular convex strips (102-7), the lower semicircular convex strips (102-7) are adapted to the troughs of the corrugated pipe, and the distance between the plurality of lower semicircular convex strips (102-7) is an integer multiple of the distance between two adjacent troughs of the corrugated pipe, a second drive motor (102-8) is fixedly mounted on one of the side plates (102-1), and the output end of the second drive motor (102-8) is fixedly connected with one end of the forward and reverse screw rods (102-2).

3. The novel butt joint process of the corrugated pipe as claimed in claim 2 is characterized in that: A pair of movable plates (102-3) are each provided with a guide slide groove at the bottom, and the guide slide groove is adapted to slide with the guide slide rail (102-4).

4. The novel butt joint process of the corrugated pipe according to claim 2 is characterized in that: The pressing assembly (102-6) comprises a gantry (102-61) fixedly connected to the top of the front and rear sides of the moving plate (102-3), a second hydraulic cylinder (102-62) fixedly connected to the top of the gantry (102-61), and an upper semicircular clamping plate (102-63) fixedly connected to the bottom piston end of the second hydraulic cylinder (102-62), the upper semicircular clamping plate (102-63) and the lower semicircular clamping plate (102-5) are symmetrically arranged up and down, and the inner wall of the upper semicircular clamping plate (102-63) is fixedly connected with an upper semicircular convex strip (102-64) at the corresponding position of the lower semicircular convex strip (102-7), and the upper semicircular convex strip (102-64) is adapted to the trough of the corrugated pipe.

5. The novel butt joint process of the corrugated pipe according to claim 1 is characterized in that: The driving assembly comprises a fixing plate (207) fixedly connected to the front side of the fixing ring (201), a first driving motor (208) fixedly connected to the fixing plate (207), and a gear (209) fixedly connected to the output end of the first driving motor (208), wherein the gear (209) is meshingly connected to one side of the outer gear ring (204).

6. The novel butt joint process of the corrugated pipe according to claim 5 is characterized in that: A through slot (210) is provided on the front side of the fixing ring (201), and the gear (209) is movably arranged to pass through the through slot (210).

7. The novel butt joint process of the corrugated pipe according to claim 1 is characterized in that: The spiral swing cleaning mechanism (301) comprises a connecting sleeve (301-1) fixedly connected to the front side of the welding gun (206); the bottom and left side of the connecting sleeve (301-1) are both open structures; a moving rod (301-2) is slidably connected inside the connecting sleeve (301-1); the bottom end of the moving rod (301-2) movably passes through the connecting sleeve (301-1) and is fixedly connected to a cleaning brush (301-3); the moving rod (301-2) and the right side of the connecting sleeve (301-2) are connected to each other. A first spring (301-4) is fixedly connected between the walls; a guide slide bar (301-5) is fixedly connected to the right side of the moving rod (301-2); an end of the guide slide bar (301-5) away from the moving rod (301-2) is slidably connected to the right side of the connecting sleeve (301-1); a push rod (301-6) is fixedly connected to the left side of the moving rod (301-2); an end of the push rod (301-6) away from the moving rod (301-2) is arranged as a downwardly inclined inclined surface (301-7).

8. The novel butt joint process of the corrugated pipe according to claim 7 is characterized in that: The lower surface of the cleaning brush (301-3) is divided into a first cleaning area (301-31), a second cleaning area (301-32) and a third cleaning area (301-33) from left to right. When the cleaning brush (301-3) rotates around the two bellows interfaces and simultaneously performs spiral swinging, the first cleaning area (301-31) first cleans the interfaces, followed by the second cleaning area (301-32) and the third cleaning area (301-33) in sequence, and then returns in reverse order, and this process is repeated continuously, and the cleaning brush always keeps in contact with the interfaces during the cleaning stage of each area.

9. The novel butt joint process of the corrugated pipe according to claim 1 is characterized in that: The spiral swing starting mechanism (302) comprises a spiral swing pushing component (302-1) fixedly connected to the bottom of the left side of the connecting sleeve (301-1) and a spiral swing starting component (302-2) fixedly connected to an upper semicircular clamping plate (102-63) and a lower semicircular clamping plate (102-5) on one side, and the bottom end of the spiral swing pushing component (302-1) is connected to the spiral swing starting component (302-2).

10. The novel butt joint process of the corrugated pipe according to claim 9, characterized in that: The spiral swing pushing component (302-1) comprises a support plate (302-11) fixedly connected to the left bottom of the connecting sleeve (301-1); a push rod (302-12) is slidably penetrated on the horizontal plate of the support plate (302-11); a connecting plate (302-13) is fixedly connected to the push rod (302-12) below the support plate (302-11); a second spring (302-14) is fixedly connected between the connecting plate (302-13) and the bottom of the support plate (302-11); the second spring (302-14) is movably sleeved on the outside of the push rod (302-12); the upper and lower surfaces of the push rod (302-12) are both arranged as arc surfaces; the arc surface at the upper end of the push rod (302-12) is in movably contact with the inclined surface (301-7); The spiral swing starting assembly (302-2) comprises a pair of semicircular rings (302-21) symmetrically arranged in the upper and lower parts, the pair of semicircular rings (302-21) are respectively fixedly connected to the upper semicircular clamping plate (102-63) and the lower semicircular clamping plate (102-5), and when the pair of bellows are butt-jointed, the outer side surface of the semicircular ring (302-21) is in active contact with the arc surface of the bottom end of the push rod (302-12), and when the bellows are clamped and fixed, the pair of semicircular rings (302-21) are combined into a complete circular structure, and in the circular The outer side surface of the structure is fixedly connected with a spiral swing starting surface (302-22) in a circular array, and the spiral swing starting surface (302-22) is an arc-shaped convex structure. When the arc surface at the bottom end of the push rod (302-12) passes through the spiral swing starting surface (302-22) each time, the first cleaning area (301-31), the second cleaning area (301-32) and the third cleaning area (301-33) on the cleaning brush (301-3) will perform cleaning operations in sequence, and then return in the opposite order to form a complete cleaning cycle.

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