CN113828670A - Nondestructive technology for bending pipe - Google Patents
Nondestructive technology for bending pipe Download PDFInfo
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- CN113828670A CN113828670A CN202110921304.1A CN202110921304A CN113828670A CN 113828670 A CN113828670 A CN 113828670A CN 202110921304 A CN202110921304 A CN 202110921304A CN 113828670 A CN113828670 A CN 113828670A
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- 238000005452 bending Methods 0.000 title claims abstract description 38
- 238000005516 engineering process Methods 0.000 title abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 71
- 238000004519 manufacturing process Methods 0.000 claims abstract description 28
- 238000002156 mixing Methods 0.000 claims abstract description 22
- 239000004033 plastic Substances 0.000 claims abstract description 22
- 229920003023 plastic Polymers 0.000 claims abstract description 22
- 239000002184 metal Substances 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 13
- 238000003723 Smelting Methods 0.000 claims abstract description 12
- 239000007769 metal material Substances 0.000 claims abstract description 12
- 238000010074 rubber mixing Methods 0.000 claims abstract description 12
- 239000000049 pigment Substances 0.000 claims abstract description 11
- 239000004014 plasticizer Substances 0.000 claims abstract description 11
- 239000000843 powder Substances 0.000 claims abstract description 11
- 239000003381 stabilizer Substances 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 238000009434 installation Methods 0.000 claims abstract description 6
- 238000002844 melting Methods 0.000 claims abstract description 6
- 230000008018 melting Effects 0.000 claims abstract description 6
- 238000002360 preparation method Methods 0.000 claims abstract description 6
- 238000007664 blowing Methods 0.000 claims description 15
- 238000004140 cleaning Methods 0.000 claims description 15
- 238000001035 drying Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 15
- 238000007254 oxidation reaction Methods 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 239000002699 waste material Substances 0.000 abstract description 4
- 238000007493 shaping process Methods 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract 2
- 238000000465 moulding Methods 0.000 abstract 2
- 239000012530 fluid Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/16—Auxiliary equipment, e.g. for heating or cooling of bends
- B21D7/165—Cooling equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/16—Auxiliary equipment, e.g. for heating or cooling of bends
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/16—Cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/02—Bending or folding
- B29C53/08—Bending or folding of tubes or other profiled members
- B29C53/083—Bending or folding of tubes or other profiled members bending longitudinally, i.e. modifying the curvature of the tube axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/80—Component parts, details or accessories; Auxiliary operations
- B29C53/84—Heating or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/16—Cooling
- B29C2035/1616—Cooling using liquids
Abstract
The invention discloses a nondestructive technology for bending a pipe, which comprises the following steps: equipment installation: the device comprises a support frame, a mixing machine, a rubber mixing machine, a smelting furnace, a dryer, a water tank, a pipe making machine, a feeding hopper and the like; preparing a blank: manufacturing a plastic bent pipe blank: mix PVC powder and water through mixing the machine, add plasticizer, stabilizer and pigment simultaneously and mix, required blank of plastics return bend is produced to rethread rubber mixing machine, and metal return bend blank preparation: melting the metal material of production metal return bend through the smelting furnace, make metal material be liquid form, this obviously passes through the weight of return bend blank self, make the blank shaping back, automatic bending when flowing from the tuber pipe, realize the moulding of return bend, it is moulding to bend it before the return bend is not cooled down, through the orificial inclination of adjusting the tuber pipe, can control the bending angle of return bend, compare with current production mode, can avoid the material waste of processing man-hour, also can prevent that the pipeline from taking place wearing and tearing in the bending, the quality of return bend has been promoted.
Description
Technical Field
The invention relates to a production method of a pipeline, relates to the technical field of bent pipes, and particularly relates to a nondestructive bent pipe process.
Background
A pipe is a device for conveying a gas, a liquid or a fluid with solid particles, which is formed by connecting pipes, pipe connectors, valves and the like, and generally, the fluid is pressurized by a blower, a compressor, a pump, a boiler and the like, flows from a high pressure position to a low pressure position of the pipe, and can also be conveyed by using the pressure or gravity of the fluid. The pipeline has wide application range, is mainly used in water supply, water drainage, heat supply, gas supply, long-distance petroleum and natural gas transportation, agricultural irrigation, hydraulic engineering and various industrial devices, is one of various pipelines, is bent by a set of bending equipment and is divided into two processes of cold roasting and hot pushing. No matter which kind of machine equipment and pipeline, the elbow pipe is mostly used for oil transportation, gas transportation, liquid transportation, engineering bridge construction and the like.
The existing production mode of bent pipes is to process straight pipelines through a pipe bender so as to obtain bent pipes, the production mode easily causes the pipelines to be worn during production, the bent parts of the pipelines become thin, the quality of the bent pipes is affected, and material waste is easily caused during the processing of the pipelines.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a nondestructive technology for bending a pipe, and the purpose is to solve the problems mentioned in the background technology.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a bend pipe nondestructive process comprises the following steps:
s1, equipment installation: the device comprises a support frame, a mixing machine, a rubber mixing machine, a smelting furnace, a dryer, a water tank, a pipe making machine, a feeding hopper and the like;
s2, blank preparation: (1) manufacturing a plastic bent pipe blank: mixing PVC powder with water by a mixer, adding a plasticizer, a stabilizer and a pigment for mixing, and producing a blank required by the plastic bent pipe by a rubber mixing machine; (2) manufacturing a metal bent pipe blank: melting the metal material for producing the metal bent pipe by a smelting furnace to enable the metal material to be in a liquid state
S3, equipment cleaning: cleaning the blank groove, the pipe orifice and the like of the pipe making machine, and drying the blank groove, the pipe orifice and the like through a dryer to ensure that the blank groove and the pipe orifice of the pipe making machine have no impurities or residual water stains;
s4, bent pipe forming: injecting a produced blank into a blank groove of a pipe making machine through a feeding funnel, pressurizing the blank groove of the pipe making machine through pressurizing equipment, so that the blank flows out of a pipe orifice of the pipe making machine, automatically bending the blank when the blank flows out of the pipe orifice of the pipe making machine by utilizing the weight of the blank, and forming a bent pipe, wherein the bending angle of the bent pipe can be controlled by adjusting the inclination angle of the pipe orifice of the pipe making machine, the temperature in the blank groove is 50-60 ℃, and the inclination angle of the pipe orifice ranges from 0-75 ℃;
s5, cleaning and cooling: the water tank is arranged below the pipe orifice of the pipe making machine, cold water is injected into the water tank, the formed bent pipe is cut off when the bent pipe flows out of the pipe orifice, so that the formed bent pipe flows into the water tank, the formed bent pipe is cooled by the cold water in the water tank, and meanwhile, the bent pipe is cleaned, and the production of the bent pipe is completed;
s6, drying the bent pipe: drying the bent pipe by using a dryer to prevent oxidation reaction in a humid environment;
s7, detecting a finished bent pipe: the bent pipe is detected, and the detection items comprise: the outer side size and the inner side size of the elbow, the thickness of the elbow wall, the surface smoothness degree of the net pipe and the bending angle of the elbow.
The technical scheme of the invention is further improved as follows: and S1, the outer diameter of the pipe orifice of the selected pipe making machine is 10-12cm, the inner diameter of the pipe orifice of the selected pipe making machine is 6-8cm, and the selected support and the pipe making machine are connected through a threaded shaft.
The technical scheme of the invention is further improved as follows: the plastic blank of the step S2 comprises the following components: 100 parts by weight of PVC powder, 5-10 parts by weight of plasticizer, 5-10 parts by weight of stabilizer and 2-4 parts by weight of pigment, and the mixing time is 30 minutes.
The technical scheme of the invention is further improved as follows: and the dryer selected in the step S3 is an air blowing type dryer, after the pipe making machine is cleaned, the air blowing type dryer is used for blowing air to the material groove and the pipe orifice of the pipe making machine blank for 10-15min, and the temperature of the dryer is controlled at 30-40 ℃.
The technical scheme of the invention is further improved as follows: in step S4, when the billet is injected into the billet groove of the tube making machine, the billet is slowly injected from the center of the billet groove, and the billet is prevented from being splashed during the injection.
The technical scheme of the invention is further improved as follows: the distance between the notch of the water tank in the step S5 and the pipe orifice of the pipe making machine is 40-60cm, the bottom of the selected water tank is provided with a spongy cushion, and cold water is injected only by injecting 4/5 of the height of the water tank without being filled.
The technical scheme of the invention is further improved as follows: and step S7, detecting the finished product pipeline, namely detecting the color and toughness of the bent pipe when the plastic bent pipe is produced, and detecting the hardness of the bent pipe when the metal bent pipe is produced.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the technical progress that:
the invention provides a nondestructive technology for bending a pipe, which can realize the shaping of the bent pipe by automatically bending the bent pipe when the bent pipe flows out of a pipe making machine after the blank is shaped through the self weight of the bent pipe blank, can bend and shape the bent pipe before the bent pipe is not cooled, and can control the bending angle of the bent pipe by adjusting the inclination angle of the pipe orifice of the pipe making machine, compared with the prior production mode, can avoid the waste of materials during processing, can also prevent the pipe from being worn during bending, and improves the quality of the bent pipe, meanwhile, in the traditional mode, the process needs to use different processing equipment for processing the pipes with different materials, so that the applicability is poor, when the bent pipe is produced, the bent pipe with different materials can be produced only by preparing different blanks, so that the production is convenient, the applicability is strong, the popularization and the use are convenient, after the bent pipe is shaped, the bent pipe is cooled by using cold water, the production efficiency can be improved, and then the bent pipe is dried by the dryer, so that the bent pipe can be prevented from oxidation reaction.
Drawings
Fig. 1 is a schematic view of a coupling structure of a pipe making machine of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following examples:
the first embodiment is as follows:
the invention provides a nondestructive technology for bending a pipe, which comprises the following steps:
s1, equipment installation: the device comprises a support frame, a mixing machine, a rubber mixing machine, a smelting furnace, a dryer, a water tank, a pipe making machine, a feeding hopper and the like;
s2, blank preparation: (1) manufacturing a plastic bent pipe blank: mixing PVC powder with water by a mixer, adding a plasticizer, a stabilizer and a pigment for mixing, and producing a blank required by the plastic bent pipe by a rubber mixing machine; (2) manufacturing a metal bent pipe blank: melting the metal material for producing the metal bent pipe by a smelting furnace to enable the metal material to be in a liquid state
S3, equipment cleaning: cleaning the blank groove, the pipe orifice and the like of the pipe making machine, and drying the blank groove, the pipe orifice and the like through a dryer to ensure that the blank groove and the pipe orifice of the pipe making machine have no impurities or residual water stains;
s4, bent pipe forming: injecting a produced blank into a blank groove of a pipe making machine through a feeding funnel, pressurizing the blank groove of the pipe making machine through pressurizing equipment, so that the blank flows out of a pipe orifice of the pipe making machine, automatically bending the blank when the blank flows out of the pipe orifice of the pipe making machine by utilizing the weight of the blank, and forming a bent pipe, wherein the bending angle of the bent pipe can be controlled by adjusting the inclination angle of the pipe orifice of the pipe making machine, the temperature in the blank groove is 50 ℃, and the inclination angle range of the pipe orifice is 45 ℃;
s5, cleaning and cooling: the water tank is arranged below the pipe orifice of the pipe making machine, cold water is injected into the water tank, the formed bent pipe is cut off when the bent pipe flows out of the pipe orifice, so that the formed bent pipe flows into the water tank, the formed bent pipe is cooled by the cold water in the water tank, and meanwhile, the bent pipe is cleaned, and the production of the bent pipe is completed;
s6, drying the bent pipe: drying the bent pipe by using a dryer to prevent oxidation reaction in a humid environment;
s7, detecting a finished bent pipe: the bent pipe is detected, and the detection items comprise: the outer side size and the inner side size of the elbow, the thickness of the elbow wall, the surface smoothness degree of the net pipe and the bending angle of the elbow.
And S1, connecting the selected support and the pipe making machine through a threaded shaft, wherein the outer diameter of the pipe orifice of the pipe making machine selected in the step S1 is 10-12cm, and the inner diameter of the pipe orifice of the pipe making machine selected in the step S is 6-8 cm.
The plastic blank of step S2 comprises the following components: 100 parts by weight of PVC powder, 5-10 parts by weight of plasticizer, 5-10 parts by weight of stabilizer and 2-4 parts by weight of pigment, and the mixing time is 30 minutes.
Wherein, the dryer selected in the step S3 is an air blowing type dryer, after the pipe making machine is cleaned, the air blowing type dryer is used for blowing air to the material groove and the pipe orifice of the pipe making machine blank for 10-15min, and the temperature of the dryer is controlled at 30-40 ℃.
In step S4, when the billet is injected into the billet groove of the tube making machine, the billet is slowly injected from the center of the billet groove, and the billet is prevented from being splashed during injection.
And in the step S5, the distance between the notch of the water tank and the pipe orifice of the pipe making machine is 40-60cm, the bottom of the selected water tank is provided with a spongy cushion, and cold water is injected only by injecting 4/5 of the height of the water tank without being filled.
In the step S7, the finished product pipeline is detected, and when the plastic elbow is produced, the color and toughness of the elbow are detected, and when the metal elbow is produced, the hardness of the elbow is detected.
Example two:
the invention provides a nondestructive technology for bending a pipe, which comprises the following steps:
s1, equipment installation: the device comprises a support frame, a mixing machine, a rubber mixing machine, a smelting furnace, a dryer, a water tank, a pipe making machine, a feeding hopper and the like;
s2, blank preparation: (1) manufacturing a plastic bent pipe blank: mixing PVC powder with water by a mixer, adding a plasticizer, a stabilizer and a pigment for mixing, and producing a blank required by the plastic bent pipe by a rubber mixing machine; (2) manufacturing a metal bent pipe blank: melting the metal material for producing the metal bent pipe by a smelting furnace to enable the metal material to be in a liquid state
S3, equipment cleaning: cleaning the blank groove, the pipe orifice and the like of the pipe making machine, and drying the blank groove, the pipe orifice and the like through a dryer to ensure that the blank groove and the pipe orifice of the pipe making machine have no impurities or residual water stains;
s4, bent pipe forming: injecting a produced blank into a blank groove of a pipe making machine through a feeding funnel, pressurizing the blank groove of the pipe making machine through pressurizing equipment, so that the blank flows out of a pipe orifice of the pipe making machine, automatically bending the blank when the blank flows out of the pipe orifice of the pipe making machine by utilizing the self weight of the blank, and forming a bent pipe, wherein the bending angle of the bent pipe can be controlled by adjusting the inclination angle of the pipe orifice of the pipe making machine, the temperature in the blank groove is 55 ℃, and the inclination angle range of the pipe orifice is 45 ℃;
s5, cleaning and cooling: the water tank is arranged below the pipe orifice of the pipe making machine, cold water is injected into the water tank, the formed bent pipe is cut off when the bent pipe flows out of the pipe orifice, so that the formed bent pipe flows into the water tank, the formed bent pipe is cooled by the cold water in the water tank, and meanwhile, the bent pipe is cleaned, and the production of the bent pipe is completed;
s6, drying the bent pipe: drying the bent pipe by using a dryer to prevent oxidation reaction in a humid environment;
s7, detecting a finished bent pipe: the bent pipe is detected, and the detection items comprise: the outer side size and the inner side size of the elbow, the thickness of the elbow wall, the surface smoothness degree of the net pipe and the bending angle of the elbow.
And S1, connecting the selected support and the pipe making machine through a threaded shaft, wherein the outer diameter of the pipe orifice of the pipe making machine selected in the step S1 is 10-12cm, and the inner diameter of the pipe orifice of the pipe making machine selected in the step S is 6-8 cm.
The plastic blank of step S2 comprises the following components: 100 parts by weight of PVC powder, 5-10 parts by weight of plasticizer, 5-10 parts by weight of stabilizer and 2-4 parts by weight of pigment, and the mixing time is 30 minutes.
Wherein, the dryer selected in the step S3 is an air blowing type dryer, after the pipe making machine is cleaned, the air blowing type dryer is used for blowing air to the material groove and the pipe orifice of the pipe making machine blank for 10-15min, and the temperature of the dryer is controlled at 30-40 ℃.
In step S4, when the billet is injected into the billet groove of the tube making machine, the billet is slowly injected from the center of the billet groove, and the billet is prevented from being splashed during injection.
And in the step S5, the distance between the notch of the water tank and the pipe orifice of the pipe making machine is 40-60cm, the bottom of the selected water tank is provided with a spongy cushion, and cold water is injected only by injecting 4/5 of the height of the water tank without being filled.
In the step S7, the finished product pipeline is detected, and when the plastic elbow is produced, the color and toughness of the elbow are detected, and when the metal elbow is produced, the hardness of the elbow is detected.
Example three:
the invention provides a nondestructive technology for bending a pipe, which comprises the following steps:
s1, equipment installation: the device comprises a support frame, a mixing machine, a rubber mixing machine, a smelting furnace, a dryer, a water tank, a pipe making machine, a feeding hopper and the like;
s2, blank preparation: (1) manufacturing a plastic bent pipe blank: mixing PVC powder with water by a mixer, adding a plasticizer, a stabilizer and a pigment for mixing, and producing a blank required by the plastic bent pipe by a rubber mixing machine; (2) manufacturing a metal bent pipe blank: melting the metal material for producing the metal bent pipe by a smelting furnace to enable the metal material to be in a liquid state
S3, equipment cleaning: cleaning the blank groove, the pipe orifice and the like of the pipe making machine, and drying the blank groove, the pipe orifice and the like through a dryer to ensure that the blank groove and the pipe orifice of the pipe making machine have no impurities or residual water stains;
s4, bent pipe forming: injecting a produced blank into a blank groove of a pipe making machine through a feeding funnel, pressurizing the blank groove of the pipe making machine through pressurizing equipment, so that the blank flows out of a pipe orifice of the pipe making machine, automatically bending the blank when the blank flows out of the pipe orifice of the pipe making machine by utilizing the self weight of the blank, and forming a bent pipe, wherein the bending angle of the bent pipe can be controlled by adjusting the inclination angle of the pipe orifice of the pipe making machine, the temperature in the blank groove is 60 ℃, and the inclination angle range of the pipe orifice is 45 ℃;
s5, cleaning and cooling: the water tank is arranged below the pipe orifice of the pipe making machine, cold water is injected into the water tank, the formed bent pipe is cut off when the bent pipe flows out of the pipe orifice, so that the formed bent pipe flows into the water tank, the formed bent pipe is cooled by the cold water in the water tank, and meanwhile, the bent pipe is cleaned, and the production of the bent pipe is completed;
s6, drying the bent pipe: drying the bent pipe by using a dryer to prevent oxidation reaction in a humid environment;
s7, detecting a finished bent pipe: the bent pipe is detected, and the detection items comprise: the outer side size and the inner side size of the elbow, the thickness of the elbow wall, the surface smoothness degree of the net pipe and the bending angle of the elbow.
And S1, connecting the selected support and the pipe making machine through a threaded shaft, wherein the outer diameter of the pipe orifice of the pipe making machine selected in the step S1 is 10-12cm, and the inner diameter of the pipe orifice of the pipe making machine selected in the step S is 6-8 cm.
The plastic blank of step S2 comprises the following components: 100 parts by weight of PVC powder, 5-10 parts by weight of plasticizer, 5-10 parts by weight of stabilizer and 2-4 parts by weight of pigment, and the mixing time is 30 minutes.
Wherein, the dryer selected in the step S3 is an air blowing type dryer, after the pipe making machine is cleaned, the air blowing type dryer is used for blowing air to the material groove and the pipe orifice of the pipe making machine blank for 10-15min, and the temperature of the dryer is controlled at 30-40 ℃.
In step S4, when the billet is injected into the billet groove of the tube making machine, the billet is slowly injected from the center of the billet groove, and the billet is prevented from being splashed during injection.
And in the step S5, the distance between the notch of the water tank and the pipe orifice of the pipe making machine is 40-60cm, the bottom of the selected water tank is provided with a spongy cushion, and cold water is injected only by injecting 4/5 of the height of the water tank without being filled.
In the step S7, the finished product pipeline is detected, and when the plastic elbow is produced, the color and toughness of the elbow are detected, and when the metal elbow is produced, the hardness of the elbow is detected.
The second embodiment obtained by experiments is the best embodiment of the invention
The working principle of the bend pipe nondestructive process is as follows:
as shown in figure 1, the bent pipe blank is automatically bent when flowing out of a pipe making machine after being formed through the self weight of the bent pipe blank, the bent pipe is shaped, the bent pipe is bent and shaped before being cooled, the bending angle of the bent pipe can be controlled by adjusting the inclination angle of the pipe orifice of the pipe making machine, compared with the existing production mode, the waste of materials during processing can be avoided, the abrasion of the bent pipe during bending can be prevented, the quality of the bent pipe is improved, meanwhile, in the traditional mode, different processing equipment is required to be used for processing the pipes made of different materials, the applicability is poor, when the bent pipe is produced by the process, the bent pipe made of different materials can be produced only by preparing different blanks, the production is convenient, the applicability is strong, the popularization and the use are convenient, after the bent pipe is formed, the bent pipe is cooled through cold water, the production efficiency can be improved, and then the bent pipe is dried through a dryer, the oxidation reaction of the bent pipe can be prevented.
The present invention has been described in general terms in the foregoing, but it will be apparent to those skilled in the art that modifications and improvements can be made thereto based on the present invention. Therefore, modifications or improvements are within the scope of the invention without departing from the spirit of the inventive concept.
Claims (7)
1. The no-damage process for the bent pipe is characterized by comprising the following steps: the method comprises the following steps:
s1, equipment installation: the device comprises a support frame, a mixing machine, a rubber mixing machine, a smelting furnace, a dryer, a water tank, a pipe making machine, a feeding hopper and the like;
s2, blank preparation: (1) manufacturing a plastic bent pipe blank: mixing PVC powder with water by a mixer, adding a plasticizer, a stabilizer and a pigment for mixing, and producing a blank required by the plastic bent pipe by a rubber mixing machine; (2) manufacturing a metal bent pipe blank: melting the metal material for producing the metal bent pipe by a smelting furnace to enable the metal material to be in a liquid state;
s3, equipment cleaning: cleaning the blank groove, the pipe orifice and the like of the pipe making machine, and drying the blank groove, the pipe orifice and the like through a dryer to ensure that the blank groove and the pipe orifice of the pipe making machine have no impurities or residual water stains;
s4, bent pipe forming: injecting a produced blank into a blank groove of a pipe making machine through a feeding funnel, pressurizing the blank groove of the pipe making machine through pressurizing equipment, so that the blank flows out of a pipe orifice of the pipe making machine, automatically bending the blank when the blank flows out of the pipe orifice of the pipe making machine by utilizing the weight of the blank, and forming a bent pipe, wherein the bending angle of the bent pipe can be controlled by adjusting the inclination angle of the pipe orifice of the pipe making machine, the temperature in the blank groove is 50-60 ℃, and the inclination angle of the pipe orifice ranges from 0-75 ℃;
s5, cleaning and cooling: the water tank is arranged below the pipe orifice of the pipe making machine, cold water is injected into the water tank, the formed bent pipe is cut off when the bent pipe flows out of the pipe orifice, so that the formed bent pipe flows into the water tank, the formed bent pipe is cooled by the cold water in the water tank, and meanwhile, the bent pipe is cleaned, and the production of the bent pipe is completed;
s6, drying the bent pipe: drying the bent pipe by using a dryer to prevent oxidation reaction in a humid environment;
s7, detecting a finished bent pipe: the bent pipe is detected, and the detection items comprise: the outer side size and the inner side size of the elbow, the thickness of the elbow wall, the surface smoothness degree of the net pipe and the bending angle of the elbow.
2. The pipe bending damage-free process according to claim 1, wherein: and S1, the outer diameter of the pipe orifice of the selected pipe making machine is 10-12cm, the inner diameter of the pipe orifice of the selected pipe making machine is 6-8cm, and the selected support and the pipe making machine are connected through a threaded shaft.
3. The pipe bending damage-free process according to claim 1, wherein: the plastic blank of the step S2 comprises the following components: 100 parts by weight of PVC powder, 5-10 parts by weight of plasticizer, 5-10 parts by weight of stabilizer and 2-4 parts by weight of pigment, and the mixing time is 30 minutes.
4. The pipe bending damage-free process according to claim 1, wherein: and the dryer selected in the step S3 is an air blowing type dryer, after the pipe making machine is cleaned, the air blowing type dryer is used for blowing air to the material groove and the pipe orifice of the pipe making machine blank for 10-15min, and the temperature of the dryer is controlled at 30-40 ℃.
5. The pipe bending damage-free process according to claim 1, wherein: in step S4, when the billet is injected into the billet groove of the tube making machine, the billet is slowly injected from the center of the billet groove, and the billet is prevented from being splashed during the injection.
6. The pipe bending damage-free process according to claim 1, wherein: the distance between the notch of the water tank in the step S5 and the pipe orifice of the pipe making machine is 40-60cm, the bottom of the selected water tank is provided with a spongy cushion, and cold water is injected only by injecting 4/5 of the height of the water tank without being filled.
7. The pipe bending damage-free process according to claim 1, wherein: and step S7, detecting the finished product pipeline, namely detecting the color and toughness of the bent pipe when the plastic bent pipe is produced, and detecting the hardness of the bent pipe when the metal bent pipe is produced.
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| CN202110921304.1A CN113828670A (en) | 2021-08-11 | 2021-08-11 | Nondestructive technology for bending pipe |
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| CN202110921304.1A CN113828670A (en) | 2021-08-11 | 2021-08-11 | Nondestructive technology for bending pipe |
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| DE1107926B (en) * | 1956-08-01 | 1961-05-31 | Reifenhaeuser Kg | Injection head on extrusion presses for the production of curved tubes or rods from organic thermoplastic or other thermoplastic compounds |
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| US3748077A (en) * | 1965-10-18 | 1973-07-24 | Phillips Petroleum Co | Apparatus for producing pipe having a bend |
| DE19751051A1 (en) * | 1997-09-10 | 1999-03-11 | Horst Wunsch | Chimney pipe and method for producing such |
| EP1595684A1 (en) * | 2004-05-14 | 2005-11-16 | Itt Manufacturing Enterprises, Inc. | Process for the continuous production of a component comprising a bent tubular body |
| CN208841789U (en) * | 2018-09-27 | 2019-05-10 | 常州融信医学微创科技有限公司 | A kind of plastic granulator extrusion composite energy-saving tuber |
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2021
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1107926B (en) * | 1956-08-01 | 1961-05-31 | Reifenhaeuser Kg | Injection head on extrusion presses for the production of curved tubes or rods from organic thermoplastic or other thermoplastic compounds |
| FR1355625A (en) * | 1962-02-06 | 1964-03-20 | Remington Arms Co Inc | Improved method and apparatus for the production of dimensionally stable plastic tubular parts |
| US3497588A (en) * | 1965-10-18 | 1970-02-24 | Phillips Petroleum Co | Method for producing pipe having a bend |
| US3748077A (en) * | 1965-10-18 | 1973-07-24 | Phillips Petroleum Co | Apparatus for producing pipe having a bend |
| DE19751051A1 (en) * | 1997-09-10 | 1999-03-11 | Horst Wunsch | Chimney pipe and method for producing such |
| EP1595684A1 (en) * | 2004-05-14 | 2005-11-16 | Itt Manufacturing Enterprises, Inc. | Process for the continuous production of a component comprising a bent tubular body |
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