A production process for a steel skeleton plastic composite pipe with a plastic wear-resistant inner layer

Abstract

The present invention relates to the field of steel skeleton composite pipe manufacturing technology, in particular to a steel skeleton plastic composite pipe manufacturing technology with a plastic wear-resistant inner layer, and specifically to a steel skeleton plastic composite pipe manufacturing equipment with a plastic wear-resistant inner layer. The equipment comprises a base, a fixed plate is fixedly connected to the front upper part of the base, a movable seat is movably arranged at the rear upper part of the base, and a pipe clamping mechanism for locking two groups of composite pipes is jointly arranged on the fixed plate and the movable seat. The pipe clamping mechanism and the pipe end polishing mechanism adopted by the present invention are used in combination, and can automatically perform stable polishing and grooving on the two groups of composite pipes. The overall work is efficient and convenient, and can effectively save the processing time of the composite pipe ends, facilitate the rapid production of the composite pipes, and is more suitable for batch sealing processing and application of the composite pipe ends. The sealing effect is excellent, and the sealing performance of the composite pipe ends can be effectively ensured, and the failure rate of the composite pipe ends can be further reduced.

Description

Technical Field

[0001] The invention relates to the field of steel skeleton composite pipe manufacturing technology, in particular to a steel skeleton plastic composite pipe production technology with a plastic wear-resistant inner layer. Background Art

[0002] Steel skeleton plastic composite pipe with plastic wear-resistant inner layer is a product specially designed to improve the wear resistance of pipelines. It is particularly suitable for conveying fluids containing solid particles. This kind of pipeline not only combines the high strength of steel and the corrosion resistance of plastic, but also enhances the service life of the pipeline by adding a wear-resistant inner layer. It is widely used in municipal engineering, oil and gas transportation, chemical industry and other fields.

[0003] The production process of steel-framed plastic composite pipes with a plastic wear-resistant inner layer is relatively complicated and requires multiple processing techniques. During the final cutting stage, there are burrs and gaps on the inside and outside of the pipe ends of each section of steel-framed plastic composite pipe. The presence of burrs will not be conducive to the docking of the two pipes on the one hand, and will create resistance to the flow of internal liquid on the other hand. The presence of gaps will affect the sealing of the pipe joints and easily cause bulging. In order to ensure the normal use of the steel-framed plastic composite pipe, the pipe ends of the steel-framed plastic composite pipe will be sealed after the cutting of the steel-framed plastic composite pipe is completed.

[0004] When sealing the ports of existing steel-framed plastic composite pipes, burrs are first removed from the inner and outer walls of the steel-framed plastic composite pipes by manually holding a small handheld polishing instrument, and then the ports are grooved by the polishing instrument. Finally, the plastic filling strip is sealed into the groove by a hot melt machine. The entire process is completed manually, so only one group of composite pipes can be sealed at a time, and the work efficiency needs to be improved. In addition, during the grooving process, the grooving width is manually controlled. After the entire groove is opened, there is a certain difference in width, while the filling strip used subsequently has the same width. After the groove and the filling strip are matched, there will be many leaks, which require further processing, and the work is more troublesome. Summary of the invention

[0005] Technical problem to be solved: The present invention provides a production process for a steel skeleton plastic composite pipe with a plastic wear-resistant inner layer, which can solve the above-mentioned problems.

[0006] Technical solution: In order to achieve the above purpose, the present invention adopts the following technical solution, a production process of a steel skeleton plastic composite pipe with a plastic wear-resistant inner layer, specifically comprising the following steps:

[0007] Step 1: Raw material preparation: Prepare high-quality steel and plastic raw materials.

[0008] Step 2: Steel wire braiding or steel belt winding: According to product design requirements, the processed steel wire is braided or spirally wound with steel belt to form a reinforcement layer of the pipeline.

[0009] Step 3: Surface treatment: Surface treatment of the formed steel skeleton.

[0010] Step 4: Inner layer extrusion: The plastic particles are heated and melted through an extruder and evenly wrapped around the outside of the steel frame to form the inner layer of the pipe.

[0011] Step 5: Cooling and shaping: Rapidly cool down the plastic through water cooling or other cooling methods to solidify the plastic and stabilize its shape.

[0012] Step 6: Outer layer extrusion: extrude another layer of plastic on the outer layer of the steel frame as a protective layer.

[0013] Step 7, cutting and inspection: Finally, cut according to the specified length, seal the pipe ends after cutting, and then conduct strict quality inspection on the finished product, including dimensional accuracy, pressure test, and appearance inspection to ensure that the product quality meets the standards.

[0014] The production process of steel-framed plastic composite pipes with a plastic wear-resistant inner layer specifically involves production equipment for steel-framed plastic composite pipes with a plastic wear-resistant inner layer. The equipment includes a base, a fixed plate fixedly connected to the front upper part of the base, a movable seat movably arranged at the rear upper part of the base, a pipe clamping mechanism for locking two groups of composite pipes is jointly arranged on the fixed plate and the movable seat, and a pipe end polishing mechanism for synchronously polishing the pipe ends of the two groups of composite pipes is arranged in front of the fixed plate.

[0015] The pipe clamping mechanism includes a turntable connected to a fixed plate and a movable seat for rotation symmetrically on the left and right sides, the composite pipe is placed between two corresponding front and rear turntables, a pushing assembly for controlling its forward and backward movement is arranged on the lower side of the movable seat, a rear support plate is symmetrically fixedly connected to the rear side of the fixed plate, a rotating pipe assembly for synchronously controlling the two turntables to rotate in different directions is arranged between the left and right rear support plates, a plurality of clamping seats are equidistantly arranged on the inner circumference of the turntable, and a control assembly for controlling their radial movement along the turntable is jointly arranged on the plurality of clamping seats.

[0016] The pipe end polishing mechanism includes a front support plate which is symmetrically fixedly connected to the front side of the fixed plate, and grinding rollers are symmetrically and movably arranged between the left and right front support plates. The grinding rollers are fixedly connected to the second mounting rod, and a swivel seat is fixedly connected to the front end of the second mounting rod. A roller assembly for controlling the common rotation of the two is commonly arranged on the swivel seats on the left and right sides. A grooving assembly for grooving the pipe end of the composite pipe is also arranged on the second mounting rod, and a distance adjustment assembly for controlling the left-right distance between the two sets of grinding rollers is commonly arranged on the front sides.

[0017] The pipe clamping mechanism and the pipe end polishing mechanism are used in coordination to complete the synchronous polishing and grooving of two groups of composite pipes before the pipe ends are closed.

[0018] As a preferred technical solution of the present invention, the pushing assembly includes a translation screw threadedly connected to the right part of the lower side of the moving seat, and a guide rod 2 fixedly connected to the left part of the lower side of the moving seat. The front and rear ends of the translation screw are rotatably connected to the vertical plates, the lower end of the vertical plate is fixedly connected to the base, the guide rod 2 is fixedly connected between the front and rear vertical plates, the rear end of the translation screw extends to the outside of the rear vertical plate and is fixedly connected to the output end of the motor 3, and the motor 3 is fixedly connected to the rear vertical plate.

[0019] As a preferred technical solution of the present invention, the rotating tube assembly includes a gear ring fixedly connected to the rear side of the turntable, a gear three is meshedly connected to the lower side of the gear ring, gear three is rotatably connected to the fixed plate through a turn pin one, a fifth bevel gear is also fixedly connected to the front end of the turn pin one, and a sixth bevel gear is meshedly connected to the side of the fifth bevel gears on the left and right sides that are away from each other, and the sixth bevel gears on the left and right sides are commonly fixedly connected to a linkage shaft two, and the linkage shaft two is rotatably connected between the left and right front support plates.

[0020] As a preferred technical solution of the present invention, the control component includes a movable rod fixedly connected to a side surface of each clamping seat away from the central axis of the turntable, the movable rod slides through the inner ring wall of the turntable, the inner end of the movable rod is fixedly connected with a connecting pin, and a swivel is also rotatably connected to the inner ring of the turntable. The swivel is provided with a plurality of oblique grooves, and the connecting pins are slidably connected in the oblique grooves one by one. A gear ring segment is integrally fixedly connected to one side of the swivel, and the gear ring segment is meshingly connected with gear four, gear four is fixedly connected to the output end of motor four, and motor four is fixedly connected in the turntable.

[0021] As a preferred technical solution of the present invention, the roller assembly includes a third bevel gear fixedly connected to the front end of the swivel seat, the swivel seat is rotatably connected to the mounting plate, the front side of the mounting plate is fixedly connected to the movable plate, the third bevel gear is meshingly connected to the outer periphery of the third bevel gear, the center of the fourth bevel gear is fixedly connected to a connecting sleeve 2, the connecting sleeve 2 is rotatably connected to the movable plate, a linkage shaft 1 is slidably penetrated through the center of the connecting sleeve 2, a plurality of convex strips 2 are fixedly connected to the surface of the linkage shaft 1, the convex strips 2 slide through the center of the connecting sleeve 2, and the linkage shaft 1 is rotatably connected between the left and right rear support plates.

[0022] As a preferred technical solution of the present invention, the grooving assembly includes a connecting sleeve 1 slidably connected to a mounting rod 2, a plurality of convex strips 1 are fixedly connected to the surface of the mounting rod 2, the convex strip 1 slides through the center of the connecting sleeve 1, a gear 2 is fixedly connected to the periphery of the connecting sleeve 1, and the periphery of the connecting sleeve 1 is also rotatably connected to the L-shaped frame, the L-shaped frames on the left and right sides are symmetrically distributed, an electric push rod is fixedly connected between the L-shaped frame and the mounting plate, and a gear 1 is rotatably connected to the L-shaped frame through a rotating pin 2, the gear 1 is meshed with the gear 2, the end of the rotating pin 2 away from the L-shaped frame is fixedly connected to the first bevel gear, the periphery of the first bevel gear is meshed with the second bevel gear, the center of the second bevel gear is fixedly connected to the mounting rod 1, the mounting rod 1 rotatably passes through the L-shaped frame, the mounting rod 1 and the mounting rod 2 are vertically distributed, and the end of the mounting rod 1 away from the second bevel gear is fixedly connected to the grooving cutter disc.

[0023] As a preferred technical solution of the present invention, the distance adjustment component includes a guide rod 1 that slides through the lower part of the left and right moving plates, the guide rod 1 is fixedly connected between the left and right front support plates, the upper parts of the left and right moving plates are commonly threaded with a bidirectional screw rod, the bidirectional screw rod is rotatably connected between the left and right front support plates, the right end of the bidirectional screw rod extends to the outside of the right front support plate and is fixedly connected to the output end of motor 1, and motor 1 is fixedly connected to the outside of the right front support plate.

[0024] As a preferred technical solution of the present invention, a plurality of quick-release components are provided on a side wall of the front clamp seat close to the composite tube, and the quick-release components include a plurality of movable sleeves that slide through a side wall of the clamp seat close to the composite tube, a ball is hinged at the outer end of the movable sleeve, a connecting plate is fixedly connected to the periphery of the inner end of the movable sleeve, a spring is fixedly connected between the connecting plate and a side wall of the clamp seat close to the composite tube, the spring is sleeved on the movable sleeve, a push rod is inserted into the movable sleeve, one end of the push rod located inside the movable sleeve is fixedly connected to a stop block, the stop block is a frosted rubber block, and one end of the push rod located outside the movable sleeve is fixedly connected to the inner wall of the clamp seat away from the composite tube.

[0025] As a preferred technical solution of the present invention, one end of the linkage shaft extends to the outside of the left rear support plate and is fixedly connected to the output end of motor 2. Motor 2 is fixedly connected to the left rear support plate. The left ends of linkage shaft 1 and linkage shaft 2 are connected through a synchronous belt structure.

[0026] As a preferred technical solution of the present invention, a wedge-shaped bucket is fixedly connected to the front end of the base.

[0027] Beneficial effects:

[0028] 1. The tube clamping mechanism used in the present invention can clamp two groups of composite tubes. Through the push assembly, the two groups of composite tubes can be processed and fed, and can be adapted to composite tubes of different lengths. Through the tube rotating assembly, the two groups of composite tubes can be rotated synchronously. At the same time, the front end of the composite tube can be supported by rolling and elastic composite by using the loosening component, effectively ensuring the smoothness and directional uniqueness of the composite tube during feeding.

[0029] 2. The pipe end polishing mechanism adopted in the present invention can control the two groups of composite pipes and the polishing roller to produce opposite rotations through a single drive, which is beneficial to chip removal, ensures the polishing effect and improves the polishing efficiency. At the same time, the polishing direction can be changed through the distance adjustment component to ensure the comprehensiveness of the polishing of the composite pipe end. After the polishing is completed, the composite pipe end can be grooved with a uniform width to effectively ensure the quality of the groove and avoid the problem of subsequent filling strips needing to be repaired. In the overall process, polishing and grooving are automatically performed in steps, which is convenient to use and saves time and effort.

[0030] 3. The tube clamping mechanism and tube end polishing mechanism adopted in the present invention are used in combination to automatically perform stable polishing and grooving on two groups of composite tubes. The overall work is efficient and convenient, which can effectively save the processing time of the tube ends of the composite tubes and facilitate the rapid production of composite tubes. It is more suitable for batch sealing processing applications of the tube ends of composite tubes, has excellent sealing effect, can effectively ensure the sealing of the tube ends of the composite tubes, and further reduce the failure rate of the tube ends of the composite tubes. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0032] Figure 1 It is a process flow chart of the present invention.

[0033] Figure 2 It is a three-dimensional structural schematic diagram of the present invention.

[0034] Figure 3 It is a top view of the three-dimensional structure of the present invention.

[0035] Figure 4 It is a rear cross-sectional structural schematic diagram of the present invention.

[0036] Figure 5 It is a schematic diagram of the three-dimensional connection structure of the pipe end polishing mechanism of the present invention.

[0037] Figure 6 It is a front cross-sectional structural schematic diagram of the present invention.

[0038] Figure 7 It is a schematic diagram of the cross-sectional structure inside the turntable of the present invention.

[0039] Figure 8It is a schematic diagram of the partial cross-sectional structure inside the clamping seat of the present invention.

[0040] Fig. 9 It is a schematic diagram of the position distribution of the grinding roller under four working states of the present invention, namely, processing the outer annular surface of the composite pipe by the grinding roller, processing the pipe end of the composite pipe by the grinding roller, processing the pipe end of the composite pipe by the grooving cutter disc, and processing the inner annular surface of the composite pipe by the grinding roller.

[0041] Fig.10 It is a schematic diagram of the partial cross-sectional structure of the composite pipe of the present invention.

[0042] In the figure: 1, base; 2, fixed plate; 21, front support plate; 22, rear support plate; 3, wedge bucket; 4, pipe end polishing mechanism; 41, grooving assembly; 411, electric push rod; 412, gear one; 413, first bevel gear; 414, second bevel gear; 415, mounting rod one; 416, grooving cutter disc; 417, L-shaped frame; 418, connecting sleeve one; 419, gear two; 42, pitch adjustment assembly; 421, two-way screw rod; 422, guide rod one; 423, moving plate; 424, motor one; 43, grinding roller; 44, mounting rod two; 441, convex strip one; 45, rotating seat; 46, rotating roller assembly; 461, linkage shaft one; 4611, convex strip two; 462, third bevel gear; 463, connecting sleeve two; 464, fourth bevel gear; 4 65. Mounting plate; 466. Motor 2; 5. Pipe clamping mechanism; 51. Pushing assembly; 511. Vertical plate; 512. Guide rod 2; 513. Moving seat; 514. Motor 3; 515. Translation screw rod; 52. Rotating tube assembly; 521. Gear ring; 522. Fifth bevel gear; 523. Gear 3; 524. Linkage shaft 2; 525. Sixth bevel gear; 53. Clamping seat; 531. Quick release component; 5311. Push rod; 5312. Connecting plate; 5313. Spring; 5314. Movable sleeve; 5315. Stop block; 5316. Ball; 54. Turntable; 55. Control assembly; 551. Motor 4; 552. Gear 4; 553. Gear ring segment; 554. Swivel; 5541. Oblique groove; 555. Connecting pin; 556. Movable rod. DETAILED DESCRIPTION

[0043] The embodiments of the present invention are described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways as defined and covered by the claims.

[0044] See also Figure 1 , Figure 2 , Figure 3 , Figure 5 and Fig.10 A production process for a steel skeleton plastic composite pipe with a plastic wear-resistant inner layer comprises the following steps:

[0045] Step 1: Raw material preparation: Prepare high-quality steel and plastic raw materials.

[0046] Step 2: Steel wire braiding or steel belt winding: According to product design requirements, the processed steel wire is braided or spirally wound with steel belt to form a reinforcement layer of the pipeline.

[0047] Step 3: Surface treatment: Surface treatment of the formed steel skeleton.

[0048] Step 4: Inner layer extrusion: The plastic particles are heated and melted through an extruder and evenly wrapped around the outside of the steel frame to form the inner layer of the pipe.

[0049] Step 5: Cooling and shaping: Rapidly cool down the plastic through water cooling or other cooling methods to solidify the plastic and stabilize its shape.

[0050] Step 6: Outer layer extrusion: extrude another layer of plastic on the outer layer of the steel frame as a protective layer.

[0051] Step 7, cutting and inspection: Finally, cut according to the specified length, seal the pipe ends after cutting, and then conduct strict quality inspection on the finished product, including dimensional accuracy, pressure test, and appearance inspection to ensure that the product quality meets the standards.

[0052] The production process of steel skeleton plastic composite pipe with plastic wear-resistant inner layer specifically involves production equipment of steel skeleton plastic composite pipe with plastic wear-resistant inner layer, which includes a base 1, a fixed plate 2 is fixedly connected to the front upper part of the base 1, a movable seat 513 is movably arranged at the rear upper part of the base 1, and a pipe clamping mechanism 5 for locking two groups of composite pipes is jointly arranged on the fixed plate 2 and the movable seat 513, and a pipe end polishing mechanism 4 for synchronously polishing the pipe ends of the two groups of composite pipes is arranged in front of the fixed plate 2.

[0053] See also Figure 2 , Figure 4 and Figure 7 The tube clamping mechanism 5 includes a turntable 54 which is symmetrically connected to the fixed plate 2 and the movable seat 513 for rotation. The composite tube is placed between the two corresponding front and rear turntables 54. A pushing assembly 51 for controlling its forward and backward movement is arranged at the lower side of the movable seat 513. A rear support plate 22 is symmetrically fixedly connected to the rear side of the fixed plate 2. A rotating tube assembly 52 for synchronously controlling the two turntables 54 to rotate in different directions is arranged between the rear support plates 22 on the left and right sides. A plurality of clamping seats 53 are equidistantly arranged on the inner circumference of the turntable 54. A control assembly 55 for controlling its radial movement along the turntable 54 is commonly arranged on the plurality of clamping seats 53.

[0054] See also Figure 2 and Figure 5The pipe end polishing mechanism 4 includes a front support plate 21 which is symmetrically fixedly connected to the front side of the fixed plate 2, and a grinding roller 43 is symmetrically and movably arranged between the left and right front support plates 21. The grinding roller 43 is fixedly connected to the second mounting rod 44, and a swivel seat 45 is fixedly connected to the front end of the second mounting rod 44. A roller assembly 46 for controlling the common rotation of the two is commonly arranged on the swivel seats 45 on the left and right sides. A grooving assembly 41 for grooving the pipe end of the composite pipe is also arranged on the second mounting rod 44. A spacing adjustment assembly 42 for controlling the left-right spacing between the two sets of grinding rollers 43 is commonly arranged on the front side.

[0055] By cooperating with the pipe clamping mechanism 5 and the pipe end polishing mechanism 4, synchronous polishing and grooving of two groups of composite pipes before the pipe ends are closed can be completed.

[0056] See also Figure 2 , Figure 3 and Figure 6 The pushing assembly 51 includes a translation screw rod 515 threadedly connected to the right part of the lower side of the moving seat 513, and a guide rod 2 512 fixedly connected to the left part of the lower side of the moving seat 513. The front and rear ends of the translation screw rod 515 are rotatably connected to the vertical plate 511. The lower end of the vertical plate 511 is fixedly connected to the base 1. The guide rod 2 512 is fixedly connected between the front and rear vertical plates 511. The rear end of the translation screw rod 515 extends to the outer side of the rear vertical plate 511 and is fixedly connected to the output end of the motor 3 514. The motor 3 514 is fixedly connected to the rear vertical plate 511.

[0057] During specific operation, the motor three 514 controls the translation screw 515 to rotate, the translation screw 515 drives the moving seat 513 to move along the guide rod two 512, and the moving seat 513 drives the composite tube to move back and forth to control the feeding of the composite tube.

[0058] See also Figure 2 and Figure 4 The rotating tube assembly 52 includes a gear ring 521 fixedly connected to the rear side of the rotating disk 54, a gear three 523 is meshedly connected to the lower side of the gear ring 521, the gear three 523 is rotatably connected to the fixed plate 2 through a rotating pin 1, a fifth bevel gear 522 is also fixedly connected to the front end of the rotating pin 1, and a sixth bevel gear 525 is meshedly connected to the side of the fifth bevel gears 522 on the left and right sides away from each other, and the sixth bevel gears 525 on the left and right sides are fixedly connected to the linkage shaft 2 524, and the linkage shaft 2 524 is rotatably connected between the left and right front support plates 21.

[0059] During specific operation, the two sixth bevel gears 525 are controlled to rotate by rotating the linkage shaft 2 524. The two sixth bevel gears 525 are oppositely distributed, thereby controlling the two fifth bevel gears 522 to rotate oppositely. The two turntables 54 are controlled to rotate oppositely by rotating the gear 3 523 and the gear ring 521. The turntable 54 drives the composite pipe inside it to rotate, thereby ensuring the comprehensive polishing of the pipe end of the composite pipe. After the transmission of the sixth bevel gear 525, the fifth bevel gear 522, the gear 3 523 and the gear ring 521, the composite pipe generates a rotation in the same direction as the linkage shaft 2 524.

[0060] See also Figure 7 The control component 55 includes a movable rod 556 fixedly connected to a side surface of each clamping seat 53 away from the central axis of the turntable 54. The movable rod 556 slides through the inner ring wall of the turntable 54. A connecting pin 555 is fixedly connected to the inner end of the movable rod 556. A rotating ring 554 is also rotatably connected to the inner ring of the turntable 54. The rotating ring 554 is provided with a plurality of oblique grooves 5541. The connecting pins 555 are slidably connected in the oblique grooves 5541 one by one. A gear ring segment 553 is integrally fixedly connected to one side of the rotating ring 554. The gear ring segment 553 is meshingly connected to a gear four 552. The gear four 552 is fixedly connected to the output end of the motor four 551, and the motor four 551 is fixedly connected in the turntable 54.

[0061] During specific operation, the motor 4 551 controls the gear 4 552 to rotate, and the gear 4 552 controls the rotation of the swivel 554 through the gear ring segment 553. The oblique groove 5541 on the swivel 554 controls the connecting pin 555 to drive the movable rod 556 to move on the inner ring wall of the swivel 554. The movable rod 556 controls the clamp seat 53 to approach or move away from the outer wall of the composite pipe, so as to control the clamp seat 53 to be pressed tightly.

[0062] See also Figure 2 , Figure 4 and Figure 5 The roller assembly 46 includes a third bevel gear 462 fixedly connected to the front end of the swivel seat 45, the swivel seat 45 is rotatably connected to the mounting plate 465, the front side of the mounting plate 465 is fixedly connected to the movable plate 423, the third bevel gear 462 is meshingly connected to the outer periphery of the fourth bevel gear 464, the center of the fourth bevel gear 464 is fixedly connected to a connecting sleeve 2 463, the connecting sleeve 2 463 is rotatably connected to the movable plate 423, a linkage shaft 1 461 is slidably penetrated by the center of the connecting sleeve 2 463, a plurality of convex strips 2 4611 are fixedly connected to the surface of the linkage shaft 1 461, the convex strips 2 4611 slide through the center of the connecting sleeve 2 463, and the linkage shaft 1 461 is rotatably connected between the left and right rear support plates 22.

[0063] During specific operation, the linkage shaft 1 461 drives the connecting sleeve 2 463 to control the rotation of the fourth bevel gear 464, and the fourth bevel gear 464 drives the rotating seat 45 to rotate through the third bevel gear 462, thereby driving the grinding roller 43 to rotate. After the fourth bevel gear 464 and the third bevel gear 462 are transmitted, the grinding roller 43 generates a rotation opposite to the rotation of the motor 2 466 and the linkage shaft 1 461, and cooperates with the rotating tube assembly 52. ​​The grinding roller 43 and the composite tube rotate in opposite directions, which can ensure the polishing effect and facilitate chip removal.

[0064] See also Figure 5 The groove assembly 41 includes a connecting sleeve 418 slidably connected to the mounting rod 44, a plurality of convex strips 441 are fixedly connected to the surface of the mounting rod 44, and the convex strips 441 slide through the center of the connecting sleeve 418, and a gear 419 is fixedly connected to the periphery of the connecting sleeve 418. The periphery of the connecting sleeve 418 is also rotatably connected to the L-shaped frame 417. The L-shaped frames 417 on the left and right sides are symmetrically distributed. An electric push rod 411 is fixedly connected between the L-shaped frame 417 and the mounting plate 465. The L-shaped frame 417 is also rotatably connected to the L-shaped frame 417 through the second rotating pin. A gear 1 412 is movably connected thereto, and the gear 1 412 is meshed with the gear 2 419. The end of the rotating pin 2 away from the L-shaped frame 417 is fixedly connected to the first bevel gear 413. The periphery of the first bevel gear 413 is meshed with the second bevel gear 414. The center of the second bevel gear 414 is fixedly connected to a mounting rod 1 415, which rotates and passes through the L-shaped frame 417. The mounting rod 1 415 and the mounting rod 2 44 are vertically distributed, and the end of the mounting rod 1 415 away from the second bevel gear 414 is fixedly connected to a grooving cutter disc 416.

[0065] During specific operation, the connecting sleeve 418 is driven to rotate by rotating the mounting rod 44, and the connecting sleeve 418 drives the gear 2 419 to rotate, and the gear 2 419 controls the first bevel gear 413 to drive the second bevel gear 414 to rotate and control the rotation of the grooving cutter disc 416, and the electric push rod 411 controls the L-shaped frame 417 to drive the grooving cutter disc 416 to feed the composite pipe end to cut grooves, so as to control the grooving depth. The electric push rod 411 is suitable for small displacement movement, and the displacement of the composite pipe feeding movement is large, and the grooving depth cannot be accurately controlled. After the transmission of the gear 2 419, the first bevel gear 413 and the second bevel gear 414, the grooving cutter disc 416 rotates in the same direction as the grinding roller 43 and rotates in the opposite direction to the composite pipe.

[0066] See also Figure 4 , Figure 5 and Fig. 9The distance adjustment component 42 includes a guide rod 422 that slides through the lower part of the left and right moving plates 423. The guide rod 422 is fixedly connected between the left and right front support plates 21. The upper parts of the left and right moving plates 423 are commonly threaded with a bidirectional screw rod 421. The bidirectional screw rod 421 is rotatably connected between the left and right front support plates 21. The right end of the bidirectional screw rod 421 extends to the outside of the right front support plate 21 and is fixedly connected to the output end of a motor 424. The motor 424 is fixedly connected to the outside of the right front support plate 21.

[0067] During specific operation, the motor 424 controls the rotation of the bidirectional screw rod 421, and the bidirectional screw rod 421 drives the moving plates 423 on the left and right sides to move in opposite directions, and the moving plates 423 drive the grinding roller 43 and the grooving cutter disc 416 to move left and right as a whole. Fig. 9 The grinding roller 43 and the grooving cutter disc 416 have different positional relationships with the composite pipe in the left and right movement stage. When the grinding roller 43 is at the periphery of the composite pipe, the annular surface of the grinding roller 43 can polish the periphery of the composite pipe. When the grinding roller 43 is at the end of the composite pipe, the plane of the grinding roller 43 can polish the end of the composite pipe. When the grinding roller 43 is inside the composite pipe, the annular surface of the grinding roller 43 can polish the inner wall of the composite pipe. When the grooving cutter disc 416 is at the end of the composite pipe, the grooving cutter disc 416 can groove the end of the composite pipe. In the grinding and grooving stages, the composite pipe moves back and forth to adapt to the processing contact of the grinding roller 43. Further distance adjustment can make slight adjustments to the grooving cutter disc 416 in the left and right directions to control the grooving width.

[0068] See also Figure 8 A plurality of quick-release components 531 are provided on a side wall of the clamp seat 53 close to the composite pipe on the front side. The quick-release components 531 include a plurality of movable sleeves 5314 that slide through a side wall of the clamp seat 53 close to the composite pipe. A ball 5316 is hinged on the outer end of the movable sleeve 5314. A connecting plate 5312 is fixedly connected to the periphery of the inner end of the movable sleeve 5314. A spring 5313 is fixedly connected between the connecting plate 5312 and a side wall of the clamp seat 53 close to the composite pipe. The spring 5313 is sleeved on the movable sleeve 5314. A push rod 5311 is inserted into the movable sleeve 5314. One end of the push rod 5311 located inside the movable sleeve 5314 is fixedly connected to a stop block 5315. The stop block 5315 is a frosted rubber block. One end of the push rod 5311 located outside the movable sleeve 5314 is fixedly connected to the inner wall of the clamp seat 53 away from the composite pipe.

[0069] During specific operation, the front section of the composite pipe is clamped by the front clamp seat 53. When the clamping force is insufficient, the composite pipe is pressed against by the retraction force of the spring 5313, and the front section of the composite pipe can slide freely in the front turntable 54, so as to cooperate with the push assembly 51 to change the grinding position of the grinding roller 43 and the grooving position of the grooving cutter disc 416. During the grinding and grooving stages, the composite pipe needs to be fixed and stable. By increasing the clamping force, the movable rod 556 can stretch the spring 5313 and retract it into the clamp seat 53, and the abutment block 5315 contacts and presses against the roller, and the composite pipe and the ball 5316 are converted into sliding contact, thereby increasing the clamping stability of the composite pipe.

[0070] See also Figure 3 and Figure 4 One end of the linkage shaft 461 extends to the outside of the left rear support plate 22 and is fixedly connected to the output end of the motor 466. The motor 466 is fixedly connected to the left rear support plate 22. The left ends of the linkage shaft 461 and the linkage shaft 2 524 are connected through a synchronous belt structure.

[0071] During specific operation, the linkage shaft 1 461 is controlled to rotate by the motor 2 466 , and the linkage shaft 1 461 is driven to rotate synchronously with the linkage shaft 2 524 by the synchronous belt.

[0072] See also Figure 1 A wedge-shaped bucket 3 is fixedly connected to the front end of the base 1.

[0073] During the specific operation, the waste chips generated during the polishing process of the composite pipe end are collected by the wedge-shaped bucket 3 for later processing.

[0074] When sealing the pipe ends of composite pipes:

[0075] S1: Two groups of composite tubes are manually placed in two tube clamping mechanisms 5 respectively, and the front ends of the two groups of composite tubes are processed and aligned by contacting the front ends of the composite tubes with the rear plane of the grinding roller 43, and then the motor 4551 controls the rotation of the gear 4552, and the gear 4552 controls the rotation of the rotating ring 554 through the gear ring segment 553, and the oblique groove 5541 on the rotating ring 554 controls the connecting pin 555 to drive the movable rod 556 to move on the inner ring wall of the rotating ring 554, and the movable rod 556 controls the clamping seat 53 to approach the outer wall of the composite tube to clamp the composite tube.

[0076] S2: The grinding roller 43 is controlled to move toward the middle through the distance adjustment component 42. During the distance adjustment process, the bidirectional screw rod 421 is controlled to rotate through the motor 1 424, and the bidirectional screw rod 421 drives the movable plates 423 on the left and right sides to move in opposite directions, and the movable plates 423 drive the grinding roller 43 and the grooving cutter disc 416 to move left and right as a whole.

[0077] S3: Start the motor 2 466, and control the linkage shaft 1 461 to rotate through the motor 2 466, and drive the linkage shaft 1 461 to rotate synchronously with the linkage shaft 2 524 through the synchronous belt, and the linkage shaft 1 461 drives the connecting sleeve 2 463 to control the fourth bevel gear 464 to rotate, and the fourth bevel gear 464 drives the rotating seat 45 to rotate through the third bevel gear 462, thereby driving the grinding roller 43 to rotate, and at the same time, the two sixth bevel gears 525 are controlled to rotate through the linkage shaft 2 524, and the two sixth bevel gears 525 are oppositely distributed, thereby controlling the two fifth bevel gears 522 to rotate in the opposite direction, thereby controlling the two turntables 54 to rotate in the opposite direction through the rotation of the gear 3 523 and the gear ring 521, and the turntable 54 drives the composite pipe inside to rotate, and at the same time, the connecting sleeve 1 418 is driven to rotate through the installation rod 2 44, and the connecting sleeve 1 418 drives the gear 2 419 to rotate, and the gear 2 419 controls the first bevel gear 413 to drive the second bevel gear 414 to rotate and control the groove cutting cutter disc 416 to rotate.

[0078] S4: At the same time as S3, the motor 424 controls the rotation of the bidirectional screw rod 421, and the bidirectional screw rod 421 drives the moving plates 423 on the left and right sides to move in opposite directions, and the moving plates 423 drive the grinding roller 43 and the grooving cutter disc 416 to move left and right as a whole, refer to Fig. 9 The grinding roller 43 and the grooving cutter disc 416 have different positional relationships with the composite pipe during the left-right movement stage. After being in the corresponding position, the left-right movement of the grinding roller 43 and the grooving cutter disc 416 is stopped for processing. When the grinding roller 43 is at the periphery of the composite pipe, the annular surface of the grinding roller 43 can polish the periphery of the composite pipe. When the grinding roller 43 is at the end of the composite pipe, the plane of the grinding roller 43 can polish the end of the composite pipe. When the grinding roller 43 is inside the composite pipe, the grinding roller 43 The annular surface can polish the inner wall of the composite pipe. When the grooving cutter disc 416 is at the end of the composite pipe, the grooving cutter disc 416 can groove the end of the composite pipe. In the polishing and grooving stages, the composite pipe moves back and forth to adapt to the processing contact of the grinding roller 43. When grooving, the grooving cutter disc 416 is slightly adjusted to the left and right through the distance adjustment component 42 to control the grooving width. The electric push rod 411 controls the L-shaped frame 417 to drive the grooving cutter disc 416 to feed to the end of the composite pipe for grooving.

[0079] S5: After the grooving is completed, the motor 2 466 is stopped, the positions of the components are reset, and then the plastic filling strip is sealed into the groove using a hot melt machine, and the end of the composite pipe is polished for a second time. Finally, the clamping mechanism is used to release the clamping of the composite pipe, and then the composite pipe is removed and the other end is closed. The waste generated during the polishing of the composite pipe end is collected by the wedge-shaped bucket 3.

[0080] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A production process for a steel skeleton plastic composite pipe with a plastic wear-resistant inner layer, characterized in that: The specific steps include: Step 1. Raw material preparation: prepare high-quality steel and plastic raw materials; Step 2: Steel wire braiding or steel belt winding: According to product design requirements, the processed steel wire is braided or spirally wound with steel belt to form a reinforcement layer of the pipeline; Step 3: Surface treatment: Surface treatment of the formed steel skeleton; Step 4: Inner layer extrusion: After the plastic particles are heated and melted by the extruder, they are evenly wrapped around the outside of the steel frame to form the inner layer of the pipe; Step 5: Cooling and shaping: Rapidly cool down the plastic by water cooling or other cooling methods to solidify the plastic and stabilize its shape; Step 6: Extrusion of outer layer: Extrude another layer of plastic on the outer layer of the steel frame as a protective layer; Step 7, cutting and inspection: Finally, cut according to the specified length, seal the pipe ends after cutting, and then conduct strict quality inspection on the finished product, including dimensional accuracy, pressure test, and appearance inspection to ensure that the product quality meets the standards; The invention relates to a production process of a steel skeleton plastic composite pipe with a plastic wear-resistant inner layer, and specifically relates to a production device for a steel skeleton plastic composite pipe with a plastic wear-resistant inner layer. The device comprises a base (1), a fixed plate (2) is fixedly connected to the front upper part of the base (1), a movable seat (513) is movably arranged at the rear upper part of the base (1), a pipe clamping mechanism (5) for locking two groups of composite pipes is arranged on the fixed plate (2) and the movable seat (513), and a pipe end polishing mechanism (4) for synchronously polishing the pipe ends of the two groups of composite pipes is arranged in front of the fixed plate (2); The pipe clamping mechanism (5) comprises a rotating disk (54) symmetrically connected to a fixed plate (2) and a movable seat (513) for rotation, and a pushing assembly (51) for controlling the forward and backward movement of the movable seat (513) is arranged at the lower side of the movable seat (513). A rear support plate (22) is symmetrically fixedly connected to the rear side of the fixed plate (2). A rotating tube assembly (52) for synchronously controlling the two rotating disks (54) to rotate in different directions is arranged between the rear support plates (22) on the left and right sides. A plurality of clamping seats (53) are equidistantly arranged on the inner circumference of the rotating disk (54). The pipe end polishing mechanism (4) comprises a front support plate (21) symmetrically fixedly connected to the front side of the fixed plate (2), a grinding roller (43) is symmetrically and movably arranged between the left and right front support plates (21), the grinding roller (43) is fixedly connected to the second mounting rod (44), a rotating seat (45) is fixedly connected to the front end of the second mounting rod (44), a rotating roller assembly (46) for controlling the common rotation of the two is commonly arranged on the left and right rotating seats (45), and a grooving assembly (41) for grooving the pipe end of the composite pipe is also arranged on the second mounting rod (44); The pipe clamping mechanism (5) and the pipe end polishing mechanism (4) are used in coordination to achieve synchronous polishing and grooving of the pipe ends of two groups of composite pipes before sealing.

2. The process for producing a steel skeleton plastic composite pipe with a plastic wear-resistant inner layer according to claim 1, characterized in that: The push assembly (51) comprises a translation screw rod (515) threadedly connected to the right portion of the lower side of the moving seat (513), and a second guide rod (512) fixedly connected to the left portion of the lower side of the moving seat (513); the front and rear ends of the translation screw rod (515) are rotatably connected to the vertical plate (511); the lower end of the vertical plate (511) is fixedly connected to the base (1); the second guide rod (512) is fixedly connected between the front and rear vertical plates (511); the rear end of the translation screw rod (515) extends to the outside of the rear vertical plate (511) and is fixedly connected to the output end of the third motor (514); and the third motor (514) is fixedly connected to the rear vertical plate (511).

3. The process for producing a steel skeleton plastic composite pipe with a plastic wear-resistant inner layer according to claim 1, characterized in that: The rotating tube assembly (52) comprises a gear ring (521) fixedly connected to the rear side of the rotating disk (54); a gear three (523) is meshedly connected to the lower side of the gear ring (521); the gear three (523) is rotatably connected to the fixed plate (2) via a rotating pin one; a fifth bevel gear (522) is also fixedly connected to the front end of the rotating pin one; a sixth bevel gear (525) is meshedly connected to the side of the fifth bevel gears (522) on the left and right sides that are away from each other; the sixth bevel gears (525) on the left and right sides are fixedly connected to the linkage shaft two (524); and the linkage shaft two (524) is rotatably connected between the left and right front support plates (21).

4. The process for producing a steel skeleton plastic composite pipe with a plastic wear-resistant inner layer according to claim 1, characterized in that: The plurality of clamping seats (53) are commonly provided with a control assembly (55) for controlling the movement of the clamping seats (53) along the radial direction of the rotating disk (54). The control assembly (55) comprises a movable rod (556) fixedly connected to a side surface of each clamping seat (53) away from the central axis of the rotating disk (54). The movable rod (556) slides through the inner ring wall of the rotating disk (54). A connecting pin (555) is fixedly connected to the inner end of the movable rod (556). The inner ring of the rotating disk (54) is also rotatably connected to a connecting pin (555). A rotating ring (554) is provided with a plurality of oblique grooves (5541), and connecting pins (555) are slidably connected in the oblique grooves (5541) in a one-to-one correspondence. A gear ring segment (553) is integrally fixedly connected to one side of the rotating ring (554), and the gear ring segment (553) is meshingly connected to a gear four (552), and the gear four (552) is fixedly connected to the output end of a motor four (551), and the motor four (551) is fixedly connected in the rotating disk (54).

5. The process for producing a steel skeleton plastic composite pipe with a plastic wear-resistant inner layer according to claim 1, characterized in that: The roller assembly (46) comprises a third bevel gear (462) fixedly connected to the front end of the rotating seat (45); the rotating seat (45) is rotatably connected to the mounting plate (465); the front side of the mounting plate (465) is fixedly connected to the movable plate (423); the outer periphery of the third bevel gear (462) is meshingly connected to the fourth bevel gear (464); the center of the fourth bevel gear (464) is fixedly connected to the second connecting sleeve (463); the second connecting sleeve (463) is rotatably connected to the movable plate (423); the center of the second connecting sleeve (463) is slidably penetrated by a linkage shaft (461); a surface of the linkage shaft (461) is fixedly connected to a plurality of convex strips (4611); the convex strips (4611) slidably penetrate the center of the second connecting sleeve (463); the linkage shaft (461) is rotatably connected between the left and right rear support plates (22).

6. The process for producing a steel skeleton plastic composite pipe with a plastic wear-resistant inner layer according to claim 1, characterized in that: The groove cutting assembly (41) comprises a connecting sleeve (418) slidably connected to the second mounting rod (44); a plurality of convex strips (441) are fixedly connected to the surface of the second mounting rod (44); the convex strips (441) slide through the center of the connecting sleeve (418); a second gear (419) is fixedly connected to the periphery of the connecting sleeve (418); the periphery of the connecting sleeve (418) is also rotatably connected to the L-shaped frame (417); the L-shaped frames (417) on the left and right sides are symmetrically distributed; an electric push rod (411) is fixedly connected between the L-shaped frame (417) and the mounting plate (465); the L-shaped frame (417) is also rotatably connected to the L-shaped frame (417) through a second rotating pin. The gear 1 (412) is rotatably connected to the gear 1 (412), the gear 1 (412) is meshed with the gear 2 (419), the end of the rotating pin 2 away from the L-shaped frame (417) is fixedly connected to the first bevel gear (413), the periphery of the first bevel gear (413) is meshed with the second bevel gear (414), the center of the second bevel gear (414) is fixedly connected to the mounting rod 1 (415), the mounting rod 1 (415) rotates and passes through the L-shaped frame (417), the mounting rod 1 (415) and the mounting rod 2 (44) are vertically distributed, and the end of the mounting rod 1 (415) away from the second bevel gear (414) is fixedly connected to the grooving cutter disc (416).

7. The process for producing a steel skeleton plastic composite pipe with a plastic wear-resistant inner layer according to claim 1, characterized in that: The front sides of the two groups of grinding rollers (43) are commonly provided with a spacing adjustment assembly (42) for controlling the left-right spacing between the two groups of grinding rollers. The spacing adjustment assembly (42) includes a guide rod (422) slidingly penetrating the lower parts of the left and right moving plates (423). The guide rod (422) is fixedly connected between the left and right front support plates (21). The upper parts of the left and right moving plates (423) are commonly threadedly connected with a bidirectional screw rod (421). The bidirectional screw rod (421) is rotatably connected between the left and right front support plates (21). The right end of the bidirectional screw rod (421) extends to the outside of the right front support plate (21) and is fixedly connected to the output end of a motor (424). The motor (424) is fixedly connected to the outside of the right front support plate (21).

8. The process for producing a steel skeleton plastic composite pipe with a plastic wear-resistant inner layer according to claim 1, characterized in that: A plurality of quick-release components (531) are arranged on a side wall of the clamp seat (53) close to the composite pipe at the front side. The quick-release components (531) include a plurality of movable sleeves (5314) that slide through a side wall of the clamp seat (53) close to the composite pipe. A ball bearing (5316) is hinged on the outer end of the movable sleeve (5314). A connecting plate (5312) is fixedly connected to the outer periphery of the inner end of the movable sleeve (5314). A connecting plate (5312) is provided between the connecting plate (5312) and the side wall of the clamp seat (53) close to the composite pipe. A spring (5313) is fixedly connected, and the spring (5313) is sleeved on the movable sleeve (5314). A push rod (5311) is inserted into the movable sleeve (5314). One end of the push rod (5311) located inside the movable sleeve (5314) is fixedly connected to a stop block (5315), and the stop block (5315) is a frosted rubber block. One end of the push rod (5311) located outside the movable sleeve (5314) is fixedly connected to the inner wall of the clamping seat (53) on the side away from the composite pipe.

9. The process for producing a steel skeleton plastic composite pipe with a plastic wear-resistant inner layer according to claim 5, characterized in that: One end of the linkage shaft 1 (461) extends to the outside of the left rear support plate (22) and is fixedly connected to the output end of the motor 2 (466). The motor 2 (466) is fixedly connected to the left rear support plate (22). The left ends of the linkage shaft 1 (461) and the linkage shaft 2 (524) are connected through a synchronous belt structure.

10. The process for producing a steel skeleton plastic composite pipe with a plastic wear-resistant inner layer according to claim 1, characterized in that: A wedge-shaped bucket (3) is fixedly connected to the front end of the base (1).

Images