CN110669300A - Preparation method of high-temperature-resistant impact-resistant UPVC pipe fitting - Google Patents

Preparation method of high-temperature-resistant impact-resistant UPVC pipe fitting Download PDF

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Publication number
CN110669300A
CN110669300A CN201911076897.5A CN201911076897A CN110669300A CN 110669300 A CN110669300 A CN 110669300A CN 201911076897 A CN201911076897 A CN 201911076897A CN 110669300 A CN110669300 A CN 110669300A
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Prior art keywords
pipe
driving
resistant
pipe fitting
inner pipe
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CN201911076897.5A
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Chinese (zh)
Inventor
马勇
舒峰
胡克文
张宗运
季琨
胡华兆
姚艳芳
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ANHUI YUFA PLASTIC INDUSTRY Co Ltd
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ANHUI YUFA PLASTIC INDUSTRY Co Ltd
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Priority to CN201911076897.5A priority Critical patent/CN110669300A/en
Publication of CN110669300A publication Critical patent/CN110669300A/en
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
    • C08L27/02Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/04Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08L27/06Homopolymers or copolymers of vinyl chloride
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00Mixing; Kneading
    • B29B7/02Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
    • B29B7/22Component parts, details or accessories; Auxiliary operations
    • B29B7/28Component parts, details or accessories; Auxiliary operations for measuring, controlling or regulating, e.g. viscosity control
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/92Measuring, controlling or regulating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D23/00Producing tubular articles
    • B29D23/001Pipes; Pipe joints
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92504Controlled parameter
    • B29C2948/9258Velocity
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92504Controlled parameter
    • B29C2948/92704Temperature
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20Oxides; Hydroxides
    • C08K3/22Oxides; Hydroxides of metals
    • C08K2003/2217Oxides; Hydroxides of metals of magnesium
    • C08K2003/2224Magnesium hydroxide
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20Oxides; Hydroxides
    • C08K3/22Oxides; Hydroxides of metals
    • C08K2003/2296Oxides; Hydroxides of metals of zinc
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00Properties
    • C08L2201/08Stabilised against heat, light or radiation or oxydation
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00Applications
    • C08L2203/18Applications used for pipes
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/03Polymer mixtures characterised by other features containing three or more polymers in a blend

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

The invention discloses a preparation method of a high-temperature-resistant impact-resistant UPVC pipe fitting, which is characterized in that the prepared high-temperature-resistant impact-resistant UPVC pipe fitting is tested to have a Vicat softening temperature of 105-113 ℃ according to GB/T8802-2001 and has an impact strength of 38-43KJ/m according to GB/T19712-20052. According to the invention, the semi-finished pipe fitting is placed into the traction opening at one side of the traction box, the output shaft of the sixth motor drives the traction belt to drive through the commutator, the two traction belts drive the semi-finished pipe fitting to be drawn out from the traction opening at the other side and to be drawn between the two arc sleeves, the piston rod of the hydraulic cylinder pushes the cutting blade, and the cutting blade cuts the semi-finished pipe fitting, so that the technical problems that the pipe fitting cannot be automatically fixed after being cut and the fixing effect is poor in the prior art are solved.

Description

Preparation method of high-temperature-resistant impact-resistant UPVC pipe fitting
Technical Field
The invention relates to the technical field of UPVC pipe fitting production, in particular to a preparation method of a high-temperature-resistant and impact-resistant UPVC pipe fitting.
Background
UPVC, also known as rigid PVC, is composed of amorphous thermoplastic resin obtained by polymerization of vinyl chloride monomer and certain additives. Besides the additive, the method of blending and modifying with other resins is also adopted, so that the resin has obvious practical value.
Patent document (CN200910103516.8) discloses a UPVC tubular product or pipe fitting and its preparation method, this UPVC pipe fitting is when reaching best plastify temperature, can be than the lead salt stabilizer, reduce 5 ℃, the fashioned temperature has been reduced, the addition of tombarthite composite stabilizer, make the effect between the material in the system strengthen, product structure defect obviously reduces, the goods surface gloss is high, corrosion resistance improves, but this UPVC pipe fitting is not high temperature resistant, simultaneously yielding, impact strength is not enough, it is not good at the effect that the pipe fitting after cutting carries out the centre gripping to the equipment of polishing in the UPVC pipe fitting production process among the prior art simultaneously, the slippage of pipe fitting is caused easily to the grip surface undersize, two processes from cutting to polishing need artifical the participation simultaneously, degree of automation is not high.
Disclosure of Invention
The invention aims to provide a preparation method of a high-temperature-resistant impact-resistant UPVC pipe fitting, which solves the following technical problems: (1) by adding the organic tin stabilizer, the composite lead salt stabilizer or the calcium-zinc stabilizer as the heat stabilizer, the hydrogen chloride is reduced in the production process of the pipe, and meanwhile, the heat stability of the product in the use process is improved, and the service life is prolonged. The processing aid of the maleic acid-acrylic acid copolymer is added to promote plasticization in the processing process and improve the processing performance of the product. By adding 2, 8-di-tert-butyl-4-methylphenol or the antioxidant of the antioxidant lU1U, free radicals formed by heating or under the action of ultraviolet rays in the UPVC processing or using process are captured, and the service life of the material is ensured. The prepared high-temperature-resistant impact-resistant UPVC pipe fitting has the Vicat softening temperature of 105-113 ℃ determined according to GB/T8802-2001 and the impact strength of 38-43KJ/m determined according to GB/T19712-20052The technical problems that the UPVC pipe fitting in the prior art is not high in temperature resistance and low in impact strength are solved; (2) the semi-finished pipe fitting is placed into a traction opening on one side of a traction box, a sixth motor output shaft drives a traction belt to transmit through a commutator, the two traction belts drive the semi-finished pipe fitting to be pulled out from the traction opening on the other side and to be pulled between two arc sleeves, a piston rod of a hydraulic cylinder pushes a cutting blade, and the cutting blade cuts the semi-finished pipe fitting, so that the technical problems that the pipe fitting cannot be automatically fixed after being cut and the fixing effect is poor in the prior art are solved; (3) the pipe bracket is upwards pushed through the piston rod of the second air cylinder, then the cut pipe is pushed to the position between the first inner pipe sleeve and the second inner pipe sleeve, the piston rod of the first air cylinder pushes the translation plate, the convex strips on the two sides of the translation plate extend the inner wall of the side frame to slide, and then the second inner pipe sleeve on the bearing seat is driven to move towards the direction of the first inner pipe sleeve, one end of the cut pipe is inserted into the first inner pipe sleeve, the other end of the cut pipe is inserted into the second inner pipe sleeve, and through the arrangement, the grinding device can automatically clamp the cut pipe fittingCarry out the centre gripping, the conduit saddle descends, second motor output shaft passes through the band pulley group and drives first driving roller and rotate, two second driving rollers of first driving roller cooperation drive the area of polishing and rotate, third motor output shaft drives the pipe material through first inner tube cover and rotates simultaneously, first motor output shaft drives the removal of mounting panel horizontal direction through the drive belt, the pulley of mounting panel bottom rolls on the installation rail simultaneously, the area of polishing is to first inner tube cover, tubular product between the second inner tube cover is polished, solve the difficult centre gripping of equipment of polishing in-process pipe fitting among the prior art, the not good technical problem of effect of polishing simultaneously.
The purpose of the invention can be realized by the following technical scheme:
a preparation method of a high-temperature-resistant impact-resistant UPVC pipe fitting comprises the following steps:
the method comprises the following steps: weighing 150 parts of polyvinyl chloride resin 100, 0.1-10 parts of heat stabilizer, 1-20 parts of toughening agent, 10-80 parts of metal hydroxide flame retardant, 1-20 parts of metal compound flame retardant synergist, 0.5-3.0 parts of processing aid, 1.1-5 parts of lubricant, 0.01-5 parts of antioxidant, 0.03-5 parts of colorant and 0.1-5 parts of ultraviolet absorbent according to parts by weight, and mixing the raw materials in a high-speed mixer to prepare a high-speed mixture;
step two: adding the high mixture into a double-screw extruder, extruding, and then carrying out vacuum forming and cooling forming to obtain a semi-finished pipe fitting;
step three: putting the semi-finished pipe into a traction opening on one side of a traction box of polishing equipment, driving a traction belt to transmit through a commutator by a sixth motor output shaft, driving the semi-finished pipe out from the traction opening on the other side by two traction belts and dragging the semi-finished pipe to a position between two arc sleeves, pushing a cutting blade by a hydraulic cylinder piston rod, cutting the semi-finished pipe by the cutting blade, moving the two arc sleeves to the upper side of a pipe support, pushing a connecting plate downwards by a third cylinder piston rod, pushing the cut pipe to a position between a first inner pipe sleeve and a second inner pipe sleeve, pushing a translation plate by the first cylinder piston rod, sliding convex strips on two sides of the translation plate along the inner wall of a side frame, further driving the second inner pipe sleeve on a bearing seat to move towards the first inner pipe sleeve, inserting one end of the cut pipe into the first inner pipe sleeve and pushing the other end of the cut pipe to insert the second inner pipe sleeve, descending the pipe support, driving a, the first driving roller is matched with the two second driving rollers to drive the polishing belt to rotate, meanwhile, the third motor output shaft drives the pipe to rotate through the first inner pipe sleeve, the first motor output shaft drives the mounting plate to move in the horizontal direction through the driving belt, meanwhile, the pulley at the bottom of the mounting plate rolls on the mounting rail, the polishing belt polishes the pipe between the first inner pipe sleeve and the second inner pipe sleeve, and a finished product high-temperature-resistant impact-resistant UPVC pipe fitting is obtained after polishing.
Further, the metal hydroxide flame retardant is one of magnesium hydroxide and aluminum hydroxide.
Furthermore, the metal compound flame-retardant synergist is one of zinc oxide, aluminum oxide and magnesium oxide.
Further, the toughening agent is one of MBS, CPE, ACR and nitrile rubber; the processing aid is maleic acid-acrylic acid copolymer.
Further, the heat stabilizer is an organic tin stabilizer, a composite lead salt stabilizer or a calcium-zinc stabilizer.
Further, the lubricant is one of lead stearate, calcium stearate, stearic acid, paraffin, microcrystalline wax, montan fat wax, polyethylene wax or oxidized polyethylene wax.
Further, the antioxidant is one of 2, 8-di-tert-butyl-4-methylphenol and an antioxidant lU 1U; the ultraviolet absorbent is propyl salicylate.
Further, in the first step, the rotating speed of the rotor of the high-speed mixer is 800r/min, and the mixing time is 10-30 min.
Further, the cylinder temperature of the twin-screw extruder in the second step: 150 ℃ and 200 ℃, and the temperature of the confluence core: 160 ℃ and 180 ℃, head temperature: 170 ℃ and 220 ℃; the rotating speed of the main machine is as follows: 10-60r/min, feeding speed: 10-90 r/min.
Further, the working process of the grinding equipment is as follows: putting a semi-finished pipe into a traction opening on one side of a traction box, driving a traction belt to transmit through a commutator by a sixth motor output shaft, driving the semi-finished pipe to be pulled out from a traction opening on the other side by the two traction belts and to be pulled between two arc sleeves, driving a cutting blade by a hydraulic cylinder piston rod, cutting the semi-finished pipe by the cutting blade, driving a lead screw to rotate by a fourth motor output shaft after cutting, driving a rod sleeve on a lifting plate to lift along a slide rod by a lead screw matched with a nut, driving a gear to rotate by a fifth motor output shaft, driving a gear to horizontally move by a gear meshed rack, driving a sliding plate to horizontally slide by the gear rack, driving the two arc sleeves to move to the upper part of a pipe support by the sliding plate, driving a connecting plate to move downwards by a third cylinder piston rod, driving the two arc sleeves to move downwards, simultaneously driving the two arc, the two arc sleeves move back to the initial position, the second cylinder piston rod pushes the pipe bracket upwards to push the cut pipe to a position between the first inner pipe sleeve and the second inner pipe sleeve, the first cylinder piston rod pushes the translation plate, the raised lines on the two sides of the translation plate slide along the inner wall of the side frame to drive the second inner pipe sleeve on the bearing seat to move towards the direction of the first inner pipe sleeve, the first inner pipe sleeve is inserted into one end of the cut pipe and pushes the other end of the cut pipe to be inserted into the second inner pipe sleeve, the pipe bracket descends, the second motor output shaft drives the first driving roller to rotate through the belt pulley set, the first driving roller is matched with the two second driving rollers to drive the polishing belt to rotate, meanwhile, the third motor output shaft drives the mounting plate to move horizontally through the first inner pipe sleeve, meanwhile, the pulley at the bottom of the mounting plate rolls on the mounting rail, and the polishing belt drives the first inner pipe sleeve, And polishing the pipe between the second inner pipe sleeves to obtain the finished product of the high-temperature-resistant impact-resistant UPVC pipe fitting.
The invention has the beneficial effects that:
(1) according to the preparation method of the high-temperature-resistant impact-resistant UPVC pipe fitting, hydrogen chloride is reduced in the production process of the pipe fitting by adding the organic tin stabilizer, the composite lead salt stabilizer or the heat stabilizer of the calcium-zinc stabilizer, the thermal stability of the pipe fitting in the use process is improved, and the service life is prolonged. The processing aid of the maleic acid-acrylic acid copolymer is added to promote plasticization in the processing process and improve the processing performance of the product. By adding 2, 8-di-tert-butyl-4-methylphenol or antioxidant lThe antioxidant of U1U can capture free radicals formed by heating or ultraviolet rays in the UPVC processing or using process, thereby ensuring the service life of the material. The prepared high-temperature-resistant impact-resistant UPVC pipe fitting has the Vicat softening temperature of 105-113 ℃ determined according to GB/T8802-2001 and the impact strength of 38-43KJ/m determined according to GB/T19712-20052
(2) The semi-finished pipe fitting is placed into a traction opening on one side of a traction box, a sixth motor output shaft drives a traction belt to transmit through a commutator, the two traction belts drive the semi-finished pipe fitting to be pulled out from the traction opening on the other side and to be pulled between two arc sleeves, a hydraulic cylinder piston rod pushes a cutting blade, the cutting blade cuts the semi-finished pipe fitting, through the arrangement, the cut semi-finished pipe fitting can be clamped by the two arc sleeves, the cut pipe fitting is convenient to fix, meanwhile, the arc sleeves are arranged to effectively increase a clamping surface conforming to the outer wall of the pipe fitting, so that the clamping is more stable, a fourth motor output shaft drives a lead screw to rotate after cutting, the lead screw is matched with a nut to drive a rod sleeve on a lifting plate to lift up along a sliding rod, a fifth motor output shaft drives a gear to rotate, the gear is meshed with a rack to move horizontally, and then, the third cylinder piston rod pushes the connecting plate downwards to drive the two arc-shaped sleeves to move downwards, meanwhile, the fourth cylinder piston rod contracts to drive the two arc-shaped sleeves to move in opposite directions, further, the cut pipe falls onto the two pipe brackets, the two arc-shaped sleeves move back to the initial position to clamp the next section of pipe fitting, through the arrangement, the cut pipe fitting is placed on the pipe brackets by the arc-shaped sleeves, and the whole process is automatic and does not need manual participation;
(3) the second cylinder piston rod pushes the pipe bracket upwards to push the cut pipe to a position between the first inner pipe sleeve and the second inner pipe sleeve, the first cylinder piston rod pushes the translation plate, the raised strips on the two sides of the translation plate slide along the inner wall of the side frame to drive the second inner pipe sleeve on the bearing seat to move towards the direction of the first inner pipe sleeve, the first inner pipe sleeve is inserted into one end of the cut pipe and pushes the other end of the cut pipe to be inserted into the second inner pipe sleeve, through the arrangement, the grinding device can automatically clamp the cut pipe, the pipe bracket descends, the second motor output shaft drives the first driving roller to rotate through the belt pulley group, the first driving roller is matched with the two second driving rollers to drive the grinding belt to rotate, meanwhile, the third motor output shaft drives the pipe to rotate through the first inner pipe sleeve, the first motor output shaft drives the mounting plate to move horizontally through the driving belt, and meanwhile, the pulley at the bottom of the mounting plate rolls on the mounting rail, the pipe between first inner tube cover, the second inner tube cover is polished to the area of polishing, and this equipment of polishing can fully polish the pipe fitting surface, and the degree of automation of polishing is high and polish effectually.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic view of the construction of the sanding apparatus of the present invention;
FIG. 2 is an installation view of the sanding belt of the present invention;
FIG. 3 is an installation view of the bearing housing of the present invention;
FIG. 4 is an installation view of the weld plate of the present invention;
FIG. 5 is an installation view of the arcuate sleeve of the present invention;
FIG. 6 is a front view of the side panel of the present invention;
fig. 7 is an internal structural view of the traction box of the present invention.
In the figure: 1. a base; 2. a side box body; 3. a first motor; 4. a transmission belt; 5. mounting a rail; 6. a pulley; 7. mounting a plate; 8. a second motor; 9. a first drive roller; 10. a fixing plate; 11. a second driving roller; 12. polishing the belt; 13. a side frame; 14. a third motor; 15. a first inner jacket tube; 151. a second inner jacket tube; 16. a first cylinder; 17. a convex strip; 18. a translation plate; 181. a bearing seat; 19. welding the plate; 20. a second cylinder; 22. a telescopic rod; 23. a pipe bracket; 24. a side plate; 25. a fourth motor; 26. a lead screw; 27. a slide bar; 28. a sliding plate; 29. a slide rail; 30. a lifting plate; 31. a fifth motor; 32. a gear; 33. a rack; 34. a third cylinder; 35. a connecting plate; 36. a fourth cylinder; 37. an arc-shaped sleeve; 38. a traction box; 381. a traction opening; 39. a cutting frame; 40. a hydraulic cylinder; 41. a cutting blade; 42. a sixth motor; 44. and (6) a traction belt.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A preparation method of a high-temperature-resistant impact-resistant UPVC pipe fitting comprises the following steps:
the method comprises the following steps: weighing 100 parts of polyvinyl chloride resin, 0.1 part of heat stabilizer, 1 part of flexibilizer, 10 parts of metal hydroxide flame retardant, 1 part of metal compound flame retardant synergist, 0.5 part of processing aid, 1.1 parts of lubricant, 0.01 part of antioxidant, 0.03 part of colorant and 0.1 part of ultraviolet absorbent according to parts by weight, and putting the raw materials in a high-speed mixer for mixing to prepare a high-speed mixture;
step two: adding the high mixture into a double-screw extruder, extruding, and then carrying out vacuum forming and cooling forming to obtain a semi-finished pipe fitting;
step three: putting the semi-finished pipe into a traction opening 381 at one side of a traction box 38 of a grinding device, driving a traction belt 44 to transmit by an output shaft of a sixth motor 42 through a commutator, driving the semi-finished pipe to be pulled out from the traction opening 381 at the other side by the two traction belts 44 and to be pulled between two arc sleeves 37, driving a cutting blade 41 by a piston rod of a hydraulic cylinder 40, cutting the semi-finished pipe by the cutting blade 41, driving a lead screw 26 to rotate by an output shaft of a fourth motor 25 after cutting, driving a rod sleeve on a lifting plate 30 to ascend along a slide rod 27 by the lead screw 26 in cooperation with a nut, driving a gear 32 to rotate by an output shaft of a fifth motor 31, driving a rack 33 to horizontally move by the gear 32, driving a sliding plate 28 to horizontally slide by the rack 33, driving the two arc sleeves 37 to move above a pipe support 23 by the sliding plate 28, and driving a piston, meanwhile, the piston rod of the fourth cylinder 36 contracts to drive the two arc-shaped sleeves 37 to move in opposite directions, so that the cut pipe falls into the two pipe brackets 23, the two arc-shaped sleeves 37 move back to the initial position, the piston rod of the second cylinder 20 pushes the pipe brackets 23 upwards to push the cut pipe between the first inner pipe sleeve 15 and the second inner pipe sleeve 151, the piston rod of the first cylinder 16 pushes the translation plate 18, the convex strips 17 on the two sides of the translation plate 18 slide along the inner wall of the side frame 13 to drive the second inner pipe sleeve 151 on the bearing seat 181 to move towards the first inner pipe sleeve 15, the first inner pipe sleeve 15 is inserted into one end of the cut pipe and pushes the other end of the cut pipe to be inserted into the second inner pipe sleeve 151, the pipe brackets 23 descend, the output shaft of the second motor 8 drives the first driving roller 9 to rotate through a belt pulley set, the first driving roller 9 drives the polishing belt 12 to rotate in cooperation with the two second driving rollers 11, and the output shaft of the third motor 14, an output shaft of the first motor 3 drives the mounting plate 7 to move in the horizontal direction through the transmission belt 4, meanwhile, the pulley 6 at the bottom of the mounting plate 7 rolls on the mounting rail 5, the grinding belt 12 is used for grinding the pipe between the first inner pipe sleeve 15 and the second inner pipe sleeve 151, and a finished product of the high-temperature-resistant impact-resistant UPVC pipe fitting is obtained after grinding.
Specifically, the metal hydroxide flame retardant is magnesium hydroxide. The metal compound flame-retardant synergist is zinc oxide. The toughening agent is MBS; the processing aid is maleic acid-acrylic acid copolymer. The heat stabilizer is an organic tin stabilizer. The lubricant is lead stearate. The antioxidant is 2, 8-di-tert-butyl-4-methylphenol; the ultraviolet absorbent is propyl salicylate. In the first step, the rotating speed of the rotor of the high-speed mixer is 800r/min, and the mixing time is 10 min. The temperature of the charging barrel of the double-screw extruder in the step two is as follows: 150 ℃, confluence core temperature: 160 ℃, head temperature: 170 ℃; the rotating speed of the main machine is as follows: 10r/min, feeding speed: 10 r/min.
Example 1 has a Vicat softening temperature of 105 ℃ and an impact strength of 38KJ/m2
Example 2
The method comprises the following steps: weighing 150 parts of polyvinyl chloride resin, 10 parts of heat stabilizer, 20 parts of flexibilizer, 80 parts of metal hydroxide flame retardant, 20 parts of metal compound flame retardant synergist, 3.0 parts of processing aid, 5 parts of lubricant, 5 parts of antioxidant, 5 parts of colorant and 5 parts of ultraviolet absorbent according to parts by weight, and putting the raw materials in a high-speed mixer for mixing to prepare a high mixture; the second and third steps are the same as the example 1;
specifically, the metal hydroxide flame retardant is aluminum hydroxide. The metal compound flame-retardant synergist is magnesium oxide. The toughening agent is nitrile rubber; the processing aid is maleic acid-acrylic acid copolymer. The heat stabilizer is calcium zinc stabilizer. The lubricant is oxidized polyethylene wax. The antioxidant is antioxidant lU 1U; the ultraviolet absorbent is propyl salicylate. In the first step, the rotating speed of the rotor of the high-speed mixer is 800r/min, and the mixing time is 30 min. The temperature of the charging barrel of the double-screw extruder in the step two is as follows: 200 ℃, confluence core temperature: 180 ℃, head temperature: 220 ℃; the rotating speed of the main machine is as follows: 60r/min, feeding speed: 90 r/min.
Example 2 has a Vicat softening temperature of 113 ℃ and an impact strength of 43KJ/m2
The polishing equipment comprises a base 1, two side box bodies 2 are fixedly arranged on the base 1, a first motor 3 is arranged on one side of the outer wall of one side box body 2, the output end of the first motor 3 is in transmission connection with a transmission belt 4, the transmission belt 4 is arranged between the two side box bodies 2, two mounting rails 5 are also fixedly arranged between the two side box bodies 2, a mounting plate 7 is fixedly arranged on the transmission belt 4, the bottom of the mounting plate 7 is slidably arranged on the mounting rail 5 through a pulley 6, a second motor 8 is fixedly arranged on the mounting plate 7, the output end of the second motor 8 is in transmission connection with a first transmission roller 9 through a pulley set, the first transmission roller 9 is rotatably arranged on a fixed plate 10, two second transmission rollers 11 are also rotatably arranged on the fixed plate 10, the two second transmission rollers 11 and the first transmission roller 9 are both rotatably arranged on the same side of the fixed plate 10, the two second transmission rollers 11 and the first, two side frames 13 are arranged on one side of two side box bodies 2, a third motor 14 is fixedly arranged on one side frame 13, a first inner pipe sleeve 15 is arranged on an output shaft of the third motor 14, a first air cylinder 16 is fixedly arranged in the other side frame 13, a piston rod of the first air cylinder 16 is connected with the lower surface of a translation plate 18 through a fixing piece, two sides of the translation plate 18 are connected with the inner wall of the side frame 13 through convex strips 17 in a sliding manner, a bearing seat 181 is fixedly arranged on the upper surface of the translation plate 18, the bearing seat 181 is rotatably connected with a second inner pipe sleeve 151, a welding plate 19 is also arranged between the two side frames 13, two second air cylinders 20 are arranged on the lower surface of the welding plate 19, piston rods of the second air cylinders 20 penetrate through the welding plate 19 and are fixedly connected with a pipe bracket 23, the bottom of the pipe bracket 23 is connected with the upper surface of the welding plate 19 through telescopic rods 22, the screw 26 is connected with a lifting plate 30 through a nut, the lifting plate 30 is connected with a slide rod 27 through a rod sleeve in a sliding manner, a fifth motor 31 is fixedly arranged on the upper surface of the lifting plate 30, the output shaft of the fifth motor 31 penetrates through the lifting plate 30 and is fixedly connected with a gear 32, one side of the gear 32 is engaged and connected with a rack 33, the rack 33 is fixedly arranged on the upper surface of a slide plate 28, the upper surface of the slide plate 28 is connected with a slide block on the lower surface of the lifting plate 30 in a sliding manner through a slide rail 29, both sides of the lower surface of the slide plate 28 are fixedly provided with third air cylinders 34, the end parts of piston rods of the third air cylinders 34 are fixedly connected with connecting plates 35, both sides of the lower surfaces of the two connecting plates 35 are symmetrically provided with fourth air cylinders 36, piston rods of the fourth air cylinders 36 on one side are connected with arc sleeves 37, traction openings 381 are formed in two side walls of the traction box 38, two sixth motors 42 are installed in the inner cavity of the traction box 38, and output shafts of the sixth motors 42 are in transmission connection with the traction belt 44 through a commutator.
Referring to fig. 1-7, the working process of the polishing apparatus of the present embodiment is as follows:
putting the semi-finished pipe into a traction opening 381 at one side of a traction box 38 of the polishing equipment, driving a traction belt 44 to transmit by an output shaft of a sixth motor 42 through a commutator, driving the semi-finished pipe to be pulled out from the traction opening 381 at the other side by the two traction belts 44 and to be pulled between two arc sleeves 37, driving a cutting blade 41 by a piston rod of a hydraulic cylinder 40, cutting the semi-finished pipe by the cutting blade 41, driving a lead screw 26 to rotate by an output shaft of a fourth motor 25 after cutting, driving a rod sleeve on the lifting plate 30 to ascend along a slide rod 27 by the lead screw 26 matching with a nut, driving a gear 32 to rotate by an output shaft of a fifth motor 31, driving a rack 33 to horizontally move by the gear 32, driving a sliding plate 28 to horizontally slide by the rack 33, driving the two arc sleeves 37 to move above a pipe bracket 23 by the sliding plate 28, driving a piston rod, meanwhile, the piston rod of the fourth cylinder 36 contracts to drive the two arc-shaped sleeves 37 to move in opposite directions, so that the cut pipe falls into the two pipe brackets 23, the two arc-shaped sleeves 37 move back to the initial position, the piston rod of the second cylinder 20 pushes the pipe brackets 23 upwards to push the cut pipe between the first inner pipe sleeve 15 and the second inner pipe sleeve 151, the piston rod of the first cylinder 16 pushes the translation plate 18, the convex strips 17 on the two sides of the translation plate 18 slide along the inner wall of the side frame 13 to drive the second inner pipe sleeve 151 on the bearing seat 181 to move towards the first inner pipe sleeve 15, the first inner pipe sleeve 15 is inserted into one end of the cut pipe and pushes the other end of the cut pipe to be inserted into the second inner pipe sleeve 151, the pipe brackets 23 descend, the output shaft of the second motor 8 drives the first driving roller 9 to rotate through a belt pulley set, the first driving roller 9 drives the polishing belt 12 to rotate in cooperation with the two second driving rollers 11, and the output shaft of the third motor 14, an output shaft of the first motor 3 drives the mounting plate 7 to move in the horizontal direction through the transmission belt 4, meanwhile, the pulley 6 at the bottom of the mounting plate 7 rolls on the mounting rail 5, the grinding belt 12 is used for grinding the pipe between the first inner pipe sleeve 15 and the second inner pipe sleeve 151, and a finished product of the high-temperature-resistant impact-resistant UPVC pipe fitting is obtained after grinding.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.

Claims (10)

1. A preparation method of a high-temperature-resistant impact-resistant UPVC pipe fitting is characterized by comprising the following steps:
the method comprises the following steps: weighing 150 parts of polyvinyl chloride resin 100, 0.1-10 parts of heat stabilizer, 1-20 parts of toughening agent, 10-80 parts of metal hydroxide flame retardant, 1-20 parts of metal compound flame retardant synergist, 0.5-3.0 parts of processing aid, 1.1-5 parts of lubricant, 0.01-5 parts of antioxidant, 0.03-5 parts of colorant and 0.1-5 parts of ultraviolet absorbent according to parts by weight, and mixing the raw materials in a high-speed mixer to prepare a high-speed mixture;
step two: adding the high mixture into a double-screw extruder, extruding, and then carrying out vacuum forming and cooling forming to obtain a semi-finished pipe fitting;
step three: putting the semi-finished pipe into a traction opening on one side of a traction box of polishing equipment, driving a traction belt to transmit through a commutator by a sixth motor output shaft, driving the semi-finished pipe out from the traction opening on the other side by two traction belts and dragging the semi-finished pipe to a position between two arc sleeves, pushing a cutting blade by a hydraulic cylinder piston rod, cutting the semi-finished pipe by the cutting blade, moving the two arc sleeves to the upper side of a pipe support, pushing a connecting plate downwards by a third cylinder piston rod, pushing the cut pipe to a position between a first inner pipe sleeve and a second inner pipe sleeve, pushing a translation plate by the first cylinder piston rod, sliding convex strips on two sides of the translation plate along the inner wall of a side frame, further driving the second inner pipe sleeve on a bearing seat to move towards the first inner pipe sleeve, inserting one end of the cut pipe into the first inner pipe sleeve and pushing the other end of the cut pipe to insert the second inner pipe sleeve, descending the pipe support, driving a, the first driving roller is matched with the two second driving rollers to drive the polishing belt to rotate, meanwhile, the third motor output shaft drives the pipe to rotate through the first inner pipe sleeve, the first motor output shaft drives the mounting plate to move in the horizontal direction through the driving belt, meanwhile, the pulley at the bottom of the mounting plate rolls on the mounting rail, the polishing belt polishes the pipe between the first inner pipe sleeve and the second inner pipe sleeve, and a finished product high-temperature-resistant impact-resistant UPVC pipe fitting is obtained after polishing.
2. The method for preparing a high temperature and impact resistant UPVC pipe fitting as claimed in claim 1, wherein the metal hydroxide flame retardant is one of magnesium hydroxide and aluminum hydroxide.
3. The method for preparing a high temperature resistant and impact resistant UPVC pipe fitting as claimed in claim 1, wherein the metallic compound flame retardant synergist is one of zinc oxide, aluminum oxide and magnesium oxide.
4. The method for preparing a high temperature resistant and impact resistant UPVC pipe fitting as claimed in claim 1, wherein the toughening agent is one of MBS, CPE, ACR and nitrile rubber; the processing aid is maleic acid-acrylic acid copolymer.
5. The method for preparing the high-temperature-resistant impact-resistant UPVC pipe fitting as claimed in claim 1, wherein the heat stabilizer is an organic tin stabilizer, a composite lead salt stabilizer or a calcium-zinc stabilizer.
6. The method for preparing a high temperature resistant and impact resistant UPVC pipe fitting as claimed in claim 1, wherein the lubricant is one of lead stearate, calcium stearate, stearic acid, paraffin wax, microcrystalline wax, montan fat wax, polyethylene wax or oxidized polyethylene wax.
7. The method for preparing the UPVC pipe fitting with high temperature resistance and impact resistance as claimed in claim 1, wherein the antioxidant is one of 2, 8-di-tert-butyl-4-methylphenol and an antioxidant lU 1U; the ultraviolet absorbent is propyl salicylate.
8. The method for preparing a high temperature and impact resistant UPVC pipe fitting as claimed in claim 1, wherein the rotor speed of the high temperature and impact resistant UPVC mixing machine in the first step is 800r/min, and the mixing time is 10-30 min.
9. The method for preparing a high temperature and impact resistant UPVC pipe fitting as claimed in claim 1, wherein the barrel temperature of the twin-screw extruder in the second step is as follows: 150 ℃ and 200 ℃, and the temperature of the confluence core: 160 ℃ and 180 ℃, head temperature: 170 ℃ and 220 ℃; the rotating speed of the main machine is as follows: 10-60r/min, feeding speed: 10-90 r/min.
10. The method for preparing a high temperature resistant and impact resistant UPVC pipe fitting as claimed in claim 1, wherein the grinding equipment works as follows: putting a semi-finished pipe into a traction opening on one side of a traction box, driving a traction belt to transmit through a commutator by a sixth motor output shaft, driving the semi-finished pipe to be pulled out from a traction opening on the other side by the two traction belts and to be pulled between two arc sleeves, driving a cutting blade by a hydraulic cylinder piston rod, cutting the semi-finished pipe by the cutting blade, driving a lead screw to rotate by a fourth motor output shaft after cutting, driving a rod sleeve on a lifting plate to lift along a slide rod by a lead screw matched with a nut, driving a gear to rotate by a fifth motor output shaft, driving a gear to horizontally move by a gear meshed rack, driving a sliding plate to horizontally slide by the gear rack, driving the two arc sleeves to move to the upper part of a pipe support by the sliding plate, driving a connecting plate to move downwards by a third cylinder piston rod, driving the two arc sleeves to move downwards, simultaneously driving the two arc, the two arc sleeves move back to the initial position, the second cylinder piston rod pushes the pipe bracket upwards to push the cut pipe to a position between the first inner pipe sleeve and the second inner pipe sleeve, the first cylinder piston rod pushes the translation plate, the raised lines on the two sides of the translation plate slide along the inner wall of the side frame to drive the second inner pipe sleeve on the bearing seat to move towards the direction of the first inner pipe sleeve, the first inner pipe sleeve is inserted into one end of the cut pipe and pushes the other end of the cut pipe to be inserted into the second inner pipe sleeve, the pipe bracket descends, the second motor output shaft drives the first driving roller to rotate through the belt pulley set, the first driving roller is matched with the two second driving rollers to drive the polishing belt to rotate, meanwhile, the third motor output shaft drives the mounting plate to move horizontally through the first inner pipe sleeve, meanwhile, the pulley at the bottom of the mounting plate rolls on the mounting rail, and the polishing belt drives the first inner pipe sleeve, And polishing the pipe between the second inner pipe sleeves to obtain the finished product of the high-temperature-resistant impact-resistant UPVC pipe fitting.
CN201911076897.5A 2019-11-06 2019-11-06 Preparation method of high-temperature-resistant impact-resistant UPVC pipe fitting Withdrawn CN110669300A (en)

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CN113527811A (en) * 2021-07-29 2021-10-22 安徽杰蓝特新材料有限公司 High-flame-retardancy PP corrugated pipe and processing technology thereof
CN114476228A (en) * 2020-10-26 2022-05-13 苏州润谷智能设备有限公司 Braided bag unreels structure of rectifying for baling press

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Application publication date: 20200110