CN113263734A - Steel-plastic composite pipe forming processing method - Google Patents
Steel-plastic composite pipe forming processing method Download PDFInfo
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- CN113263734A CN113263734A CN202110532633.7A CN202110532633A CN113263734A CN 113263734 A CN113263734 A CN 113263734A CN 202110532633 A CN202110532633 A CN 202110532633A CN 113263734 A CN113263734 A CN 113263734A
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- composite pipe
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/52—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
- B29C65/7841—Holding or clamping means for handling purposes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
- B29C66/022—Mechanical pre-treatments, e.g. reshaping
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/03—After-treatments in the joint area
- B29C66/032—Mechanical after-treatments
- B29C66/0322—Post-pressing without reshaping, i.e. keeping the joint under pressure after joining
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/03—After-treatments in the joint area
- B29C66/034—Thermal after-treatments
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/52—Joining tubular articles, bars or profiled elements
- B29C66/522—Joining tubular articles
- B29C66/5221—Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/74—Joining plastics material to non-plastics material
- B29C66/742—Joining plastics material to non-plastics material to metals or their alloys
- B29C66/7428—Transition metals or their alloys
- B29C66/74283—Iron or alloys of iron, e.g. steel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
The invention provides a steel-plastic composite pipe forming and processing method, which comprises a bottom plate, an inner support attaching device, an angle plate, an air pump, a support plate, a locking piece and a clamp, wherein the operation is completed by matching, the single pressurization can be realized by solving the problem that all areas of a PVC pipe are difficult to be matched with the inner surface of a steel pipe in all directions, the pressurization is generally realized by inputting hot air at one side of a pipeline and gradually reducing the temperature when the hot air enters the pipe, so that the temperature is reduced when the hot air is conveyed to the other side of the pipeline, the bonding effect is reduced after heating, the pressurization effect is poorer at one side of the pipeline far away from the hot air input than at one side close to the hot air input, partial depressions can be generated in the PVC pipe under the extrusion of the steel pipe in the sleeving process, the positions with serious depressions are difficult to recover the original shape in a pressurization mode, the degree of fit is reduced, and the bonded areas are reduced, thereby further influencing the forming quality of the steel-plastic composite pipe and the like.
Description
Technical Field
The invention relates to the technical field of pipeline processing, in particular to a steel-plastic composite pipe forming processing method.
Background
The steel-plastic composite pipe is a new composite pipe material, which is called steel-plastic pipe for short in many places, the product uses seamless steel pipe and welded steel pipe as base pipe, PVC pipe is sleeved in the base pipe, the steel-plastic composite pipe has oxygen-blocking function and good corrosion resistance, so the excellent performance makes the steel-plastic composite pipe have wide application, and the figure of the pipe can be seen in various fields such as petroleum and natural gas conveying, industrial and mining pipes, drinking water pipes, drain pipes and the like.
During the process of forming the steel-plastic composite pipe, the PVC pipe is required to be sleeved into the steel pipe, the PVC pipe and the steel pipe are adhered to each other through an adhesive, and then the interior of the PVC pipe is pressurized, so that the degree of fit between the PVC pipe and the inner surface of the steel pipe is improved.
However, there are problems with a single press:
1. the single pressurization is difficult to realize the omnibearing fit between each area of the PVC pipe and the inner surface of the steel pipe, the pressurization is generally realized by inputting hot gas at one side of the pipeline, the hot gas enters the pipe and is gradually cooled, so that the temperature is reduced when the hot gas is conveyed to the other side of the pipeline, the bonding effect is reduced after heating, and the pressurization effect is poorer at one side of the pipeline far away from the hot gas input than at one side of the pipeline close to the hot gas input;
2. in the sleeving process, the PVC pipe may be partially sunken under the extrusion of the steel pipe, and the positions with serious sunken parts are difficult to restore the original shape in a pressurizing mode, so that the fitting degree is reduced, the bonding area is reduced, and the molding quality of the steel-plastic composite pipe is influenced.
Disclosure of Invention
In order to solve the problems, the invention provides a steel-plastic composite pipe forming processing method, which can solve the problems that all areas of a PVC pipe are difficult to be matched with the inner surface of a steel pipe in an all-round way by single pressurization, the pressurization is usually realized by inputting hot gas at one side of a pipeline for pressurization, the temperature of the hot gas entering the pipe is gradually reduced when the hot gas is conveyed to the other side of the pipeline, the bonding effect after heating is reduced, the pressurization effect is poorer at one side of the pipeline far away from the hot gas input than at one side close to the hot gas input pipeline, the PVC pipe is likely to have partial depression under the extrusion of the steel pipe in the sleeving process, and the PVC pipe is difficult to recover the original shape at positions with serious depression by a pressurization mode, so that the matching degree is reduced, the bonded areas are reduced, and the forming quality of the steel-plastic composite pipe is influenced.
In order to achieve the purpose, the invention adopts the following technical scheme that an attaching device is used in the forming and processing method of the steel-plastic composite pipe, the attaching device comprises a bottom plate, an inner support attaching device, an angle plate, an air pump, a support plate, a locking piece and a first clamp, and the forming and processing method of the steel-plastic composite pipe by adopting the attaching device comprises the following steps:
s1, preprocessing: carrying out rust removal and deburring treatment on the outer surface of the steel pipe, and carrying out deburring treatment on the outer surface of the PVC pipe;
s2, assembling: respectively coating an adhesive on the inner surface of the steel pipe and the outer surface of the PVC pipe, and then sleeving the PVC pipe into the steel pipe to obtain a composite pipe semi-finished product;
s3, positioning: pulling out the locking piece, rotating the angle plate rightwards, sleeving the composite tube semi-finished product from the right end of the inner cylinder, internally supporting the sleeved composite tube semi-finished product through an internal supporting mechanism, then rotating the angle plate to reset the composite tube semi-finished product, inserting and positioning through the locking piece, and positioning two ends of the composite tube semi-finished product through the opposite movement of the first clamp and the second clamp;
s4, bonding: the hot air blown out by the air pump pressurizes the inside of the composite tube semi-finished product, then the extrusion column and the matching plate are driven by the air cylinder to move leftwards, the internal support mechanism is integrally retracted, the pressurization disappears, the hot air is turned to enter the leather air bag, the input of the hot air is stopped until the leather air bag overflows, the outer end surface of the overflowing leather air bag forms an arc surface and is attached to the inner surface of the PVC tube;
s5, rolling and attaching: the overflowing cortical air bag is driven to rotate in the circumferential direction by the driving mechanism, so that the overflowing cortical air bag rolls the inner wall of the PVC pipe in the circumferential direction, and the PVC pipe is adhered to the inner surface of the steel pipe in an all-round adhesive manner;
s6, post-processing: naturally cooling to room temperature to obtain the steel-plastic composite pipe, and taking down the steel-plastic composite pipe.
The attached device of internal stay is installed to the upper end of bottom plate, the right-hand member of bottom plate is provided with the angle board, be round pin hub connection between the rear end of angle board and the bottom plate, there is the air pump through the pedestal mounting on the right side wall of angle board, the locking piece has been inserted to the front end of angle board, the lower extreme of locking piece inserts on the bottom plate, the left side wall mounting of angle board has the backup pad, the backup pad plays the effect of support to the right-hand member of inner tube, evenly be provided with anchor clamps one along its circumference on the angle board, anchor clamps one is connected for sliding fit with the angle board.
The inner support attaching device comprises a fixed plate, an inner cylinder, a driving mechanism, a cylinder, an extrusion column, a matching plate, an inner support mechanism, an attaching mechanism, a blocking mechanism and a clamp II, wherein the fixed plate is arranged on a bottom plate, the fixed plate and an angle plate are used for attaching and sealing two ends of a clamped composite pipe semi-finished product, the right end of the fixed plate and the right end of the inner cylinder are connected through a bearing, the driving mechanism is connected between the bottom plate and the inner cylinder, the inner cylinder is driven to rotate through the driving mechanism, the cylinder is arranged inside the inner cylinder, the extrusion column is arranged at the ejection end of the cylinder, the matching plate is evenly arranged at the edge of the extrusion column along the circumferential direction of the extrusion column, the inner support mechanism is evenly arranged on the inner cylinder along the circumferential direction of the inner cylinder, the inner support mechanism is used for conveying hot air while internally supporting the sleeved composite pipe semi-finished product, so as to pressurize the inside of the inner cylinder, the fitting degree of a PVC pipe and the inner wall of a steel pipe is improved, the attaching mechanism is evenly arranged on the inner cylinder along the circumferential direction of the inner cylinder, and the inner supporting mechanism and the attaching mechanism are arranged in an annular intermittent manner, the middle part of the inner barrel is provided with a blocking mechanism, the fixed plate is uniformly provided with a second clamp along the circumferential direction of the fixed plate, and the second clamp is connected with the fixed plate in a sliding fit manner.
The internal stay mechanism include bracing piece, limiting plate, built-in spring, ball, the bracing piece is connected for sliding fit with the inner tube, the limiting plate is installed to the inner of bracing piece, be connected with built-in spring between limiting plate and the inner tube inner wall, the built-in spring of initial position is compression state, turn right from a left side on the limiting plate and evenly seted up the inner groovy, and placed the ball in the inner groovy, the design of ball has reduced the resistance that composite tube semi-manufactured goods cover was established, and there is the space between appearance of ball makes composite tube semi-manufactured goods inner wall and the bracing piece, make things convenient for blowing off of steam and pressurize.
Laminating mechanism include the cortex gasbag, the arc, the elasticity rope, the outer wall at the inner tube is installed to the cortex gasbag, the inner wall of cortex gasbag is adhered to there is the arc, the design of arc has guaranteed when having avoided elasticity rope and cortex gasbag direct contact, fill the back overflowing blowing, the too convex condition of the tie point of the two, the cambered surface degree of filling the back cortex gasbag of overflowing has been improved, be connected with the elasticity rope between arc and the inner tube, the elasticity rope has certain elasticity, evenly seted up the through-hole along its circumference on the inner tube, the through-hole is the intercommunication relation with the cortex gasbag, the cortex gasbag of initial condition is the shrivelled state, the arc of initial position seals up the through-hole.
The arc-shaped plate is driven to move leftwards synchronously when the extrusion column moves leftwards, at the moment, the corresponding holes in the matching plate are aligned with the through holes, hot air is blown into the through holes so as to blow into the leather air bags until overflowing (the delivery of the hot air is stopped after overflowing), the outer surfaces of the overflowing leather air bags are in an arc state, and the inner walls of the PVC pipes are rolled through the circumferential rotation of the overflowing leather air bags.
As a preferred technical scheme of the invention, the driving mechanism comprises a rack, a gear and a motor, wherein the rack is arranged on the outer wall of the inner cylinder and is meshed with the gear, the gear is arranged on an output shaft of the motor, and the motor is arranged on the bottom plate.
According to a preferable technical scheme of the invention, the support rod is internally provided with a conveying groove, the outer end face of the support rod is uniformly provided with air holes, the air holes are communicated with the conveying groove, when the non-retracted support rod supports the composite tube semi-finished product internally, the conveying groove is in a ventilation state, hot air enters the conveying groove and then is sprayed out from the air holes, so that the interior of the composite tube semi-finished product is heated and pressurized, and the fitting degree and the bonding property between the PVC tube and the inner wall are improved.
As a preferred technical scheme of the invention, the outer end surface of the supporting rod is of an outward convex arc structure, so that the gap between the supporting rod and the composite pipe semi-finished product is enlarged, and hot gas is favorably sprayed out.
As a preferred technical scheme, the diameter of the extrusion column is gradually reduced from left to right, the surface of the extrusion column is in contact with the limiting plate, the limiting plate is extruded to be integrally expanded when the extrusion column moves to the right, and the limiting plate is integrally contracted under the reset of the built-in spring when the extrusion column moves to the left.
As a preferred technical scheme of the invention, the matching plate is uniformly provided with corresponding holes, the corresponding holes and the through holes at the initial positions are arranged in a left-right staggered manner, at the moment, the through holes are blocked by the arc-shaped plate, hot air is difficult to enter, after the arc-shaped plate is driven to synchronously move leftwards when the extrusion column moves leftwards, the corresponding holes and the through holes on the matching plate are aligned, at the moment, the hot air can enter the cortical air bag, and the matching plate is connected with the inner cylinder in a sliding fit manner.
As a preferred technical scheme of the invention, the blocking mechanism comprises an inner core column and a blocking block, the inner core column is arranged in the middle of the inner barrel, the blocking block is uniformly arranged on the inner core column along the circumferential direction of the inner core column, the blocking block corresponds to the position between the support rods, when the support rods contract inwards, the conveying groove in the support rods is contacted with the blocking block and is blocked, hot gas does not enter the conveying groove any more, and thus the heating and pressurizing of the interior of the composite pipe semi-finished product are stopped.
As a preferred technical scheme of the invention, the middle part of the angle plate is provided with a connecting hole, the connecting hole is communicated with an air pump, the middle part of the right end of the inner cylinder is provided with a butt joint hole, the butt joint hole is communicated with an air hole, the supporting plate is contacted and jointed with the outer surface of the inner cylinder, and when the right end of the semi-finished composite pipe sleeved by the angle plate is jointed, hot air is blown into the connecting hole by the air pump and then enters the inner cylinder from the butt joint hole.
The invention has the beneficial effects that:
the invention provides a steel-plastic composite pipe forming processing method, which is characterized in that the inner support of a semi-finished product of a composite pipe is pressurized briefly at the same time, so that after the fit between a PVC pipe and the inner surface of a steel pipe is improved to a certain extent, a leather air bag is overflowed through the transformation of the hot gas conveying direction, the interior of the PVC pipe is rolled in the circumferential direction through the circumferential rotation of the overflowed leather air bag, so that the PVC pipe is forcibly recovered to the original shape, and the damage and the scratch to the PVC pipe are reduced while the PVC pipe is forcibly rolled due to the arrangement of the leather air bag and gas;
the inner supporting mechanism supports the semi-finished product of the composite pipe, and hot gas can be sprayed out after penetrating deep into the pipe while supporting the composite pipe, so that the uniformity of hot gas entering the pipe is improved, the condition of conveying hot gas from one side is avoided, the pressurizing effect is improved, the heating uniformity inside the PVC pipe is improved, and the bonding effect is improved;
and thirdly, according to the forming processing method of the steel-plastic composite pipe, the initial state of the leather air bag is a shrivelled state, interference of a hot air conveying path and heating homogenization with the inner wall of the PVC pipe are avoided, the leather air bag is quickly filled after heating is stopped, the radian of the outer surface of the circumferentially arranged leather air bag is in the same radius, the leather air bag is enabled to forcibly roll the inner wall of the PVC pipe to be restored to the original shape through circumferential rotation, and the fitting degree between the steel pipe and the PVC pipe is improved.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a flow chart of a steel-plastic composite pipe forming method;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a top view of the present invention;
FIG. 4 is a cross-sectional view A-A of FIG. 3 of the present invention;
FIG. 5 is a cross-sectional view B-B of FIG. 3 of the present invention;
FIG. 6 is a schematic view of the structure between the compression column and the mating plate of the present invention;
fig. 7 is a partial enlarged view at I of fig. 4 according to the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
As shown in fig. 1 to 7, a method for forming a steel-plastic composite pipe uses an attaching device, the attaching device includes a bottom plate 1, an inner support attaching device 2, an angle plate 3, an air pump 4, a support plate 5, a locking member 6 and a first clamp 7, and the method for forming a steel-plastic composite pipe using the attaching device includes:
s1, preprocessing: carrying out rust removal and deburring treatment on the outer surface of the steel pipe, and carrying out deburring treatment on the outer surface of the PVC pipe;
s2, assembling: respectively coating an adhesive on the inner surface of the steel pipe and the outer surface of the PVC pipe, and then sleeving the PVC pipe into the steel pipe to obtain a composite pipe semi-finished product;
s3, positioning: pulling out the locking piece 6, rotating the angle plate 3 rightwards, sleeving the composite tube semi-finished product from the right end of the inner cylinder 22, internally supporting the sleeved composite tube semi-finished product through the internal supporting mechanism 27, then rotating the angle plate 3 to reset the composite tube semi-finished product, inserting and positioning the composite tube semi-finished product through the locking piece 6, and positioning two ends of the composite tube semi-finished product through the opposite movement of the first clamp 7 and the second clamp 30;
s4, bonding: the hot air blown out by the air pump 4 pressurizes the inside of the composite pipe semi-finished product, then the air cylinder 24 drives the extrusion column 25 and the matching plate 26 to move leftwards, the internal support mechanism 27 is integrally retracted, the pressurization disappears at the moment, the hot air changes direction and enters the leather air bag 281, the input of the hot air is stopped until the leather air bag 281 overflows, the outer end surface of the overflowing leather air bag 281 forms an arc-shaped surface and is attached to the inner surface of the PVC pipe;
s5, rolling and attaching: the drive mechanism 23 drives the overflowing cortex air bag 281 to rotate in the circumferential direction, so that the overflowing cortex air bag 281 rolls the inner wall of the PVC pipe in the circumferential direction, and the PVC pipe is adhered to the inner surface of the steel pipe in an all-around adhesive manner;
s6, post-processing: naturally cooling to room temperature to obtain the steel-plastic composite pipe, and taking down the steel-plastic composite pipe.
Internal stay attaching device 2 is installed to bottom plate 1's upper end, bottom plate 1's right-hand member is provided with angle board 3, be round pin hub connection between angle board 3's rear end and the bottom plate 1, there is air pump 4 through pedestal mounting on angle board 3's the right side wall, locking piece 6 has been inserted to angle board 3's front end, the lower extreme of locking piece 6 inserts on bottom plate 1, the left side wall mounting of angle board 3 has backup pad 5, backup pad 5 plays the effect of support to inner tube 22's right-hand member, evenly be provided with anchor clamps 7 along its circumference on the angle board 3, anchor clamps 7 are connected for sliding fit with angle board 3.
The inner support attaching device 2 comprises a fixing plate 21, an inner cylinder 22, a driving mechanism 23, an air cylinder 24, an extrusion column 25, a matching plate 26, an inner support mechanism 27, a matching mechanism 28, a blocking mechanism 29 and a clamp II 30, wherein the fixing plate 21 is installed on a bottom plate 1, the fixing plate 21 and an angle plate 3 perform attaching type sealing on two ends of a clamped composite tube semi-finished product, the right ends of the fixing plate 21 and the inner cylinder 22 are connected through a bearing, the driving mechanism 23 is connected between the bottom plate 1 and the inner cylinder 22, the inner cylinder 22 is driven to rotate through the driving mechanism 23, the air cylinder 24 is installed inside the inner cylinder 22, the extrusion column 25 is installed at the ejection end of the air cylinder 24, the matching plate 26 is evenly installed at the edge of the extrusion column 25 along the circumferential direction, the inner support mechanism 27 is evenly installed on the inner cylinder 22 along the circumferential direction, the inner support mechanism 27 carries hot air while performing inner support, the fitting degree of the PVC pipe and the inner wall of the steel pipe is improved, the inner cylinder 22 is uniformly provided with the fitting mechanisms 28 along the circumferential direction, the inner supporting mechanisms 27 and the fitting mechanisms 28 are arranged in an annular intermittent manner, the middle part of the inner cylinder 22 is provided with the blocking mechanism 29, the fixed plate 21 is uniformly provided with the clamps two 30 along the circumferential direction, the clamps two 30 are connected with the fixed plate 21 in a sliding fit manner, when the composite pipe fitting device works specifically, a composite pipe semi-finished product is sleeved from the right end of the inner cylinder 22 to the left, the inner part of the composite pipe semi-finished product sealed at two ends is supported through the inner supporting mechanisms 27 in the sleeving process, the composite pipe semi-finished product is clamped at two ends through the opposite movement of the clamps one 7 and the clamps two 30 after the sleeving, the input and the pressure of the inner part of the composite pipe semi-finished product sealed at two ends is carried out through the blowing-in of hot air, then, the air cylinder 24 drives the extrusion column 25 to move to the left, the inner supporting mechanisms 27 retract under the elastic action, so that the composite pipe semi-finished product is not contacted with the inner wall of the composite pipe semi-finished product, meanwhile, the internally-contracted internal support mechanism 27 is sealed through the blocking mechanism 29, corresponding holes in the matching plate 26 are aligned with the through holes, at the moment, hot air can change the direction to enter the attaching mechanism 28, and then the driving mechanism 23 drives the overflowing attaching mechanism 28 to rotate in the circumferential direction, so that the inner wall of the PVC pipe is rolled.
The driving mechanism 23 comprises a rack 231, a gear 232 and a motor 233, the rack 231 is mounted on the outer wall of the inner cylinder 22, the rack 231 is meshed with the gear 232, the gear 232 is mounted on an output shaft of the motor 233, the motor 233 is mounted on the bottom plate 1, and during specific work, the gear 232 is driven to rotate by the motor 233, and the inner cylinder 22 is driven to rotate under the meshing of the gear 232 and the rack 231.
The inner supporting mechanism 27 comprises a supporting rod 271, a limiting plate 272, an inner spring 273 and balls 274, the supporting rod 271 is connected with the inner cylinder 22 in a sliding fit manner, the limiting plate 272 is installed at the inner end of the supporting rod 271, the inner spring 273 is connected between the limiting plate 272 and the inner wall of the inner cylinder 22, the inner spring 273 at the initial position is in a compressed state, an inner groove is uniformly formed in the limiting plate 272 from left to right, the balls 274 are placed in the inner groove, the resistance of sleeving the composite tube semi-finished product is reduced due to the design of the balls 274, gaps exist between the inner wall of the composite tube semi-finished product and the supporting rod 271 due to the presence of the balls 274, hot air is blown out and pressurized conveniently, during specific work, the supporting rod 271 is extruded to the maximum position through the extrusion column 25, when the composite tube semi-finished product is sleeved, the inner portion of the composite tube semi-finished product is supported through the supporting rod 271 and the balls 274, after the two ends of the composite tube semi-finished product are clamped, the extrusion column 25 moves leftwards, the limit plate 272 contracts inwards under the elasticity of the built-in spring 273, the support rod 271 contracts inwards, at the moment, the conveying groove in the support rod 271 is contacted with the blocking block 292 and is blocked, and hot air does not enter the conveying groove any more.
The support rod 271 is internally provided with a conveying groove, the outer end surface of the support rod 271 is uniformly provided with air holes, the air holes are communicated with the conveying groove, when the support rod 271 which is not retracted inwards supports the composite tube semi-finished product, the conveying groove is in an air-permeable state, hot air can enter the conveying groove and then is sprayed out from the air holes, thereby heating and pressurizing the interior of the composite pipe semi-finished product, improving the integrating degree and the caking property between the PVC pipe and the inner wall, the outer end surface of the supporting rod 271 is of an outward convex arc structure, the gap between the supporting rod 271 and the composite tube semi-finished product is enlarged, the hot air is favorably sprayed out, the diameter of the extrusion column 25 is gradually reduced from left to right, and the surface of the extrusion column 25 contacts with the limit plate 272, the extrusion column 25 will extrude the limit plate 272 to expand outward when moving to the right, and the limit plate 272 contracts inward when the extrusion column 25 moves to the left under the reset of the built-in spring 273.
The attaching mechanism 28 comprises a leather air bag 281, an arc plate 282 and an elastic rope 283, the leather air bag 281 is arranged on the outer wall of the inner cylinder 22, the arc plate 282 is attached to the inner wall of the leather air bag 281, the design of the arc plate 282 ensures that when the elastic rope 283 is prevented from being in direct contact with the leather air bag 281, after the air blowing and the air filling are carried out, the connection point of the two is excessively protruded, the arc degree of the leather air bag 281 after the air filling is improved, the elastic rope 283 is connected between the arc plate 282 and the inner cylinder 22, the elastic rope 283 has certain elastic force, through holes are uniformly formed in the inner cylinder 22 along the circumferential direction of the inner cylinder, the through holes are communicated with the leather air bag 281, the leather air bag 281 in the initial state is in a dry and flat state, the arc plate 282 in the initial position seals and blocks the through holes, the arc plate 282 is driven to move leftwards synchronously when the extrusion column 25 moves leftwards, at the moment, corresponding holes in the matching plate 26 are aligned with the through holes, and the leather air bag 281 is blown into the through holes until the air filling is carried out (the hot air is stopped after the air filling) The outer surface of the overflowing cortex air bag 281 is in an arc shape, and the inner wall of the PVC pipe is rolled through the circumferential rotation of the overflowing cortex air bag 281.
Matching plate 26 on evenly seted up and correspond the hole, and initial position correspond the hole and the through-hole for controlling staggered arrangement, the through-hole is blockked up by arc 282 this moment, steam is difficult to get into, drives the synchronous back that moves to the left of arc 282 when extrusion post 25 moves to the left, the hole that corresponds on matching plate 26 aligns with the through-hole, steam can enter into cortex gasbag 281 this moment in, be sliding fit connection between matching plate 26 and the inner tube 22.
The blocking mechanism 29 comprises an inner core column 291 and a blocking block 292, the inner core column 291 is installed in the middle of the inner cylinder 22, the blocking block 292 is evenly installed on the inner core column 291 along the circumferential direction of the inner core column 291, the blocking block 292 corresponds to the support rod 271 in position, when the support rod 271 contracts inwards, a conveying groove in the support rod 271 is in contact with the blocking block 292 and is blocked, hot gas does not enter the conveying groove any more, and therefore heating and pressurizing of the interior of the composite tube semi-finished product are stopped.
The middle part of the angle plate 3 is provided with a connecting hole, the connecting hole is communicated with the air pump 4, the middle part of the right end of the inner barrel 22 is provided with a butt joint hole, the butt joint hole is communicated with an air hole, the supporting plate 5 is in contact fit with the outer surface of the inner barrel 22, and when the angle plate 3 is in fit with the right end of the sleeved composite tube semi-finished product, hot air is blown into the connecting hole through the air pump 4 and then enters the inner barrel 22 from the butt joint hole.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides a compound pipe shaping processing method is moulded to steel, its attached equipment that has used, this attached equipment includes bottom plate (1), the attached device of internal stay (2), angle board (3), air pump (4), backup pad (5), locking piece (6) and anchor clamps (7), its characterized in that: the method for forming and processing the steel-plastic composite pipe by adopting the attaching equipment comprises the following steps:
s1, preprocessing: carrying out rust removal and deburring treatment on the outer surface of the steel pipe, and carrying out deburring treatment on the outer surface of the PVC pipe;
s2, assembling: respectively coating an adhesive on the inner surface of the steel pipe and the outer surface of the PVC pipe, and then sleeving the PVC pipe into the steel pipe to obtain a composite pipe semi-finished product;
s3, positioning: pulling out the locking piece (6), rotating the angle plate (3) rightwards, sleeving the composite tube semi-finished product from the right end of the inner cylinder (22), internally supporting the sleeved composite tube semi-finished product through an internal supporting mechanism (27), then rotating the angle plate (3) to reset the composite tube semi-finished product, inserting and positioning the composite tube semi-finished product through the locking piece (6), and positioning two ends of the composite tube semi-finished product through the opposite movement of the first clamp (7) and the second clamp (30);
s4, bonding: the inside of the composite pipe semi-finished product is pressurized by hot air blown by an air pump (4), then an extrusion column (25) and a matching plate (26) are driven to move leftwards by an air cylinder (24), an internal support mechanism (27) is integrally contracted inwards, the pressurization disappears, the hot air is turned and enters a leather air bag (281), the input of the hot air is stopped until the leather air bag (281) overflows, and the outer end face of the overflowing leather air bag (281) forms an arc-shaped surface and is attached to the inner surface of a PVC pipe;
s5, rolling and attaching: the drive mechanism (23) drives the overflowing cortex air bag (281) to rotate in the circumferential direction, so that the overflowing cortex air bag (281) rolls the inner wall of the PVC pipe in the circumferential direction, and the PVC pipe is adhered to the inner surface of the steel pipe in an all-around adhesive manner;
s6, post-processing: naturally cooling to room temperature to obtain a steel-plastic composite pipe, and taking down the steel-plastic composite pipe;
the inner support attaching device (2) is installed at the upper end of the bottom plate (1), an angle plate (3) is arranged at the right end of the bottom plate (1), the rear end of the angle plate (3) is connected with the bottom plate (1) through a pin shaft, an air pump (4) is installed on the right side wall of the angle plate (3) through a base, a locking piece (6) is inserted into the front end of the angle plate (3), the lower end of the locking piece (6) is inserted into the bottom plate (1), a supporting plate (5) is installed on the left side wall of the angle plate (3), first clamps (7) are evenly arranged on the angle plate (3) along the circumferential direction of the angle plate, and the first clamps (7) are connected with the angle plate (3) in a sliding fit manner;
attached device of internal stay (2) including fixed plate (21), inner tube (22), actuating mechanism (23), cylinder (24), extrusion post (25), cooperation board (26), internal stay mechanism (27), laminating mechanism (28), block up mechanism (29) and anchor clamps two (30), fixed plate (21) are installed on bottom plate (1), the right-hand member of fixed plate (21) and inner tube (22) is connected for the bearing, be connected with actuating mechanism (23) between bottom plate (1) and inner tube (22), the internally mounted of inner tube (22) has cylinder (24), extrusion post (25) are installed to the ejecting end of cylinder (24), cooperation board (26) are evenly installed along its circumference in extrusion post (25) edge, internal stay mechanism (27) are evenly installed along its circumference on inner tube (22), laminating mechanism (28) are evenly installed along its circumference on inner tube (22), and internal stay mechanism (27), The laminating mechanism (28) is arranged in an annular intermittent manner, the middle part of the inner cylinder (22) is provided with a blocking mechanism (29), the fixed plate (21) is uniformly provided with a second clamp (30) along the circumferential direction of the fixed plate, and the second clamp (30) is connected with the fixed plate (21) in a sliding fit manner;
the inner support mechanism (27) comprises a support rod (271), a limit plate (272), an inner spring (273) and balls (274), the support rod (271) is connected with the inner barrel (22) in a sliding fit mode, the limit plate (272) is installed at the inner end of the support rod (271), the inner spring (273) is connected between the limit plate (272) and the inner wall of the inner barrel (22), inner grooves are uniformly formed in the limit plate (272) from left to right, and the balls (274) are placed in the inner grooves;
laminating mechanism (28) include cortex gasbag (281), arc (282), elasticity rope (283), the outer wall at inner tube (22) is installed in cortex gasbag (281), the inner wall of cortex gasbag (281) is adhered to arc (282), be connected with elasticity rope (283) between arc (282) and inner tube (22), evenly seted up the through-hole along its circumference on inner tube (22), the through-hole is the intercommunicating relation with cortex gasbag (281).
2. The steel-plastic composite pipe forming processing method according to claim 1, characterized in that: the driving mechanism (23) comprises a rack (231), a gear (232) and a motor (233), the rack (231) is installed on the outer wall of the inner barrel (22), the rack (231) is meshed with the gear (232), the gear (232) is installed on an output shaft of the motor (233), and the motor (233) is installed on the bottom plate (1).
3. The steel-plastic composite pipe forming processing method according to claim 1, characterized in that: the inside of bracing piece (271) seted up the conveyer trough, the outer terminal surface of bracing piece (271) evenly is seted up there is the gas pocket, and the gas pocket is the intercommunicating relation with the conveyer trough.
4. The steel-plastic composite pipe forming processing method according to claim 1, characterized in that: the outer end face of the supporting rod (271) is of an outward convex arc structure.
5. The steel-plastic composite pipe forming processing method according to claim 1, characterized in that: the diameter of the extrusion column (25) is gradually reduced from left to right, and the surface of the extrusion column (25) is in contact with the limiting plate (272).
6. The steel-plastic composite pipe forming processing method according to claim 1, characterized in that: the matching plate (26) is evenly provided with corresponding holes, the corresponding holes and the through holes at the initial positions are arranged in a left-right staggered mode, and the matching plate (26) is connected with the inner cylinder (22) in a sliding fit mode.
7. The steel-plastic composite pipe forming processing method according to claim 1, characterized in that: the blocking mechanism (29) comprises an inner core column (291) and a blocking block (292), the inner core column (291) is installed in the middle of the inner barrel (22), the blocking block (292) is evenly installed on the inner core column (291) along the circumferential direction of the inner core column, and the blocking block (292) corresponds to the support rod (271).
8. The steel-plastic composite pipe forming processing method according to claim 3, characterized in that: the middle part of the angle plate (3) is provided with a connecting hole, the connecting hole is communicated with the air pump (4), the middle part of the right end of the inner cylinder (22) is provided with a butt joint hole, the butt joint hole is communicated with the air hole, and the supporting plate (5) is contacted and attached to the outer surface of the inner cylinder (22).
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| CN118181777A (en) * | 2024-05-16 | 2024-06-14 | 成都进扬热缩新材料有限公司 | Connection processing device and processing method for composite heat shrinkage pipe |
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| CN113263734B (en) | 2022-04-08 |
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Address after: 239000 Jingwu Road, economic development zone, Quanjiao County, Chuzhou City, Anhui Province Applicant after: Chuzhou guodeng Pipe Technology Co.,Ltd. Address before: 239000 Jingwu Road, economic development zone, Quanjiao County, Chuzhou City, Anhui Province Applicant before: Anhui Tongtong Pipe Industry Co., Ltd |
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