CN114103105A

CN114103105A - New material process for producing polypropylene anticorrosion equipment

Info

Publication number: CN114103105A
Application number: CN202111343871.XA
Authority: CN
Inventors: 张波; 余柏春
Original assignee: Hangzhou Qiandao Pumps Co ltd
Current assignee: Hangzhou Qiandao Pumps Co ltd
Priority date: 2021-11-14
Filing date: 2021-11-14
Publication date: 2022-03-01
Anticipated expiration: 2041-11-14
Also published as: CN114103105B

Abstract

The invention discloses a new material new process for producing polypropylene anticorrosion equipment, and relates to the technical field of industrial manufacturing. This a new material technology for producing anticorrosive equipment of polypropylene, according to the principle of 3D printer, reform transform this business turn over material mechanism, when making this business turn over material mechanism can carry out work like the 3D printer, promote the load that beats printer head, increase weld strength, with the inside that this business turn over material mechanism was put into to the raw materials, then control this business turn over material mechanism through PLC control program and remove, make and beat printer head and carry out even ejection of compact at the printing position, the angle of guaranteeing the ejection of compact simultaneously can accord with actual demand. This a new material new technology for producing anticorrosive equipment of polypropylene, ejection of compact speed is faster, and ejection of compact position is more accurate, finally realizes the integrated into one piece of large-scale thermoplastic equipment, wholly does not have the welding seam, and the range of application is wider, product quality is high, and product life is showing and is promoting.

Description

New material process for producing polypropylene anticorrosion equipment

Technical Field

The invention relates to the technical field of industrial manufacturing, in particular to a new material process for producing polypropylene anticorrosion equipment.

Background

At present, in the occasions needing to contact corrosive media such as chemical industry, pesticides, pharmacy and the like, a large amount of welding process is still used for processing polypropylene equipment, including a polypropylene storage tank, a polypropylene vacuum metering tank, a polypropylene filler absorption tower and the like, and the processing processes of the polypropylene equipment at present have two types: firstly, selecting a polypropylene plate with the thickness of 1 multiplied by 2 meters, cutting, baking, forming, assembling and welding; secondly, a cylinder is made of polypropylene particles through an extrusion winding technology, and secondary processing is carried out on the basis of the cylinder, such as internal reinforcement and upper and lower end enclosures. The second process is relatively safer than the first process, but still does not avoid a large number of welds, and the strength of the welds and the level of workers can inevitably significantly affect the quality and service life of the equipment. Meanwhile, due to the single material and the limitation of the processing technology, the material can not be used in the occasions of high temperature, strong corrosion and solvents, and can not be used in the occasions of static resistance, flame retardance and the like.

Meanwhile, the 3D printing technology is mature day by day, various defects of the existing polypropylene equipment are considered, and a novel process for printing large thermoplastic plastic equipment by using thermoplastic plastic resin is invented by combining processing processes of thermoplastic materials such as polypropylene and the like.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention discloses a new material new process for producing polypropylene anticorrosion equipment, which aims to solve the problems in the background art.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: a new material new process for producing polypropylene anticorrosion equipment comprises the following steps;

preferably, selecting materials and discharging, selecting different thermoplastic plastics and resins as base materials according to different requirements, adding the base materials into an extruder for mixing, continuously adding an auxiliary agent according to requirements, improving the temperature resistance, strength, toughness, corrosion resistance, static resistance, flame retardance and other performances of the extruder, fully stirring, extruding and discharging, directly extruding the materials through a spiral discharging rod to form strip-shaped materials in the process, mainly taking the round or flat sections of the strip-shaped materials, cooling the materials to form a disc shape, and waiting for use.

And secondly, installing a micro spiral extrusion mechanism above the printing head, selecting different thermoplastic plastics or resins as base materials according to different requirements, adding the base materials into the feeding and discharging mechanism for mixing, continuously adding an auxiliary agent according to requirements, improving the performances of the feeding and discharging mechanism in various aspects such as temperature resistance, strength, toughness, static resistance, flame retardance and the like, fully stirring, then extruding and discharging the mixture in an extruder, and directly carrying out hot-melting laminating printing on the extruded material without cooling.

Preferably, print the preparation, when preparing to print, because the raw materials intensive mixing has been done in the time of preparation strip silk earlier stage, so need not carry out the secondary extrusion mixture to the raw materials when printing, according to the principle of 3D printer, reform transform this business turn over material mechanism, when making this business turn over material mechanism can carry out work like the 3D printer, promote the load of beating printer head, then drop into the inside of beating printer head with the raw materials, only need heat printer head this moment, beat the feeding of printer head near-end, it is controllable adjustable according to different raw materials temperature to beat printer head.

Preferably, the material is printed to 3D printing technique comes the control to beat the removal of printer head, beats the printer head ejection of compact and uses perpendicular ejection of compact as the owner, and can install the inclination discharge gate additional as required, realizes carrying out the multi-angle ejection of compact at the in-process that beats printer head and remove, guarantees simultaneously that the angle of ejection of compact can accord with actual demand, and ejection of compact position is more accurate.

Preferably, the auxiliary means takes the moving direction of the printing head as the front, a hot air outlet which is basically close to the width of the extruded material is additionally arranged in front of the printing head to be used for heating the cooled base layer and the cooled side surface, the effect of microsoft on the surfaces of the base layer and the side surface layer is achieved, the hot melt lamination quality is higher, a group of pressing wheels which are slightly wider than the discharge port are additionally arranged behind the printing head according to circumstances, the purpose of increasing the hot melt lamination effect is also achieved, multiple times of uniform lamination are realized in the hot melt lamination process, meanwhile, the rolling is carried out after each lamination is finished, and the close fit between the front and back laminated contents is ensured.

Preferably, the printing mode is multi-layer printing, the thickness is taken as an example, one time is not more than one third of the total thickness, and the welding quality is further ensured by multi-layer printing.

Preferably, the attention and the discharge diameter are preferably 0.5-10mm, and a smaller or larger discharge caliber can be selected according to the required surface smoothness and quality requirements of the product and different purposes, so as to achieve higher production efficiency, higher quality and better appearance.

Preferably, the equipment control is realized by writing a corresponding PLC control program on the printing equipment for control, so that one or more printing heads can print simultaneously, and the printing efficiency is improved.

Preferably, the printing platform is used for printing ultra-large equipment, the equipment bearing platform is not moved, and the corresponding PLC control program is written into the printing equipment to control the lifting of the printing head, so that the requirement of industrial field large-scale equipment production is met.

Preferably, when the printing material cannot melt the surface of the substrate to be slightly melted by direct contact or hot air cannot blow the surface of the substrate to be slightly melted, the equipment bearing platform needs to be heated. To ensure the hot melt lamination effect.

The invention discloses a new material new process for producing polypropylene anticorrosion equipment, which has the following beneficial effects:

1. this a new material new technology for producing anticorrosive equipment of polypropylene, according to the principle of 3D printer, reform transform this business turn over material mechanism, when making this business turn over material mechanism can carry out work like the 3D printer, promote the load that beats printer head, then put into the inside that beats printer head with the raw materials, then control this mechanism through PLC control program and remove, and can install the inclination discharge gate additional as required, the realization carries out the multi-angle ejection of compact at the in-process that beats printer head and remove, guarantee simultaneously that the angle of ejection of compact can accord with actual demand, ejection of compact position is more accurate, finally realize large-scale thermoplastic equipment's integrated into one piece, wholly there is not the welding seam, product quality is high, product life is showing and is promoting, and can satisfy different application scenes, for example, high temperature, strong acid, solvent, it is fire-retardant, prevent static etc.

2. This a new material new technology for producing anticorrosive equipment of polypropylene, the device mixes through the inside of adding the extruder with the raw materials, extrudees the ejection of compact after the intensive mixing, then extrudees through spiral discharge bar and forms the stripy, then utilizes the principle realization automatic printing of 3D printer, and can control through PLC control program, realize that one or more beat printer head and print the ejection of compact simultaneously, reduce the degree of dependence of quality to the workman, promote holistic production efficiency simultaneously.

3. The new material new process for producing the polypropylene anticorrosion equipment is characterized in that when the new material new process is used, a hot air outlet which is basically close to the width of an extrusion material is additionally arranged in front of a printing head, multilayer printing is simultaneously selected, the thickness of the hot air outlet is not more than one third of the total thickness once, the multilayer printing is adopted, a group of pinch rollers which are slightly wider than a discharge port are additionally arranged behind the printing head according to the circumstances, when the new material is actually printed, hot melt materials are discharged downwards through the printing head, the cooled base layer and the cooled side surface are heated by the hot air outlet at the moment, the effect of micro-melting the surfaces of the base layer and the side surface layer is achieved, the hot melt welding quality is higher, meanwhile, a multilayer printing mode is adopted, when the second layer and the third layer are printed, the pinch rollers roll hot melt products, tight fit between the front and back printed contents is ensured, the purpose of increasing the hot melt laminating effect is achieved, the adhesive force of the printed equipment is ensured to be stronger, The strength is higher.

4. This a new material new technology for producing polypropylene anticorrosion equipment, in order to adapt to the needs of printing super large-scale equipment, adopt the bottom plate fixed, heat as the circumstances, beat printer head and print along with printing the mode of going up and down.

Drawings

FIG. 1 is a diagram of an overall process system of the present invention.

Detailed Description

The embodiment of the invention discloses a new material process for producing polypropylene anticorrosion equipment, which comprises the following steps, as shown in figure 1;

selecting materials and discharging materials, selecting thermoplastic plastics or resin as a base material according to requirements, wherein the thermoplastic plastics or resin is a material which has plasticity at a certain temperature, is solidified after cooling and can repeat the process, the molecular structure is characterized in that the material is a linear high molecular compound, generally does not have an active group, does not generate linear intermolecular crosslinking when heated, and can be reprocessed into a new product after waste products are recovered, in the material selection process of the process, the material can be selected according to actual use requirements and compatibility with an object to be welded, and then is added into an extruder for mixing, or additives can be continuously added according to requirements to improve the performances of the temperature resistance, strength, toughness, corrosion resistance, static resistance, flame retardance and the like of the waste products, the material is fully stirred and then enters the extruder for extruding and discharging, and is directly extruded by a spiral discharging rod to form a strip shape in the process, the section of the strip wire is mainly flat or round, and the strip wire is cooled to be in a disc shape and waits for use.

Step two, print the preparation, when preparing to print, because the raw materials intensive mixing has been done in the time of preparation strip silk earlier stage, so need not carry out the secondary extrusion mixture to the raw materials when printing, according to the principle of 3D printer, reform transform this business turn over material mechanism, when making this business turn over material mechanism can carry out work like the 3D printer, promote the load of beating printer head, then drop into the inside of beating printer head with the raw materials, only need heat printer head this moment, beat the feeding of printer head near-end, it is controllable adjustable according to different raw materials hot melt temperature to beat the printer head temperature.

Step three, the material is printed to 3D printing technique comes the control to beat the removal of printer head, beats the printer head ejection of compact and uses perpendicular ejection of compact as the owner, and can install the inclination discharge gate additional as required, realizes beating the in-process that the printer head removed and carries out the multi-angle ejection of compact, guarantees simultaneously that the angle of ejection of compact can accord with actual demand, and ejection of compact position is more accurate.

And step four, an auxiliary means, taking the moving direction of the printing head as the front, additionally arranging a hot air outlet which is basically close to the width of the extruded material in front of the printing head so as to heat the cooled base layer and the cooled side surface, achieving the effect of micro-melting of the surface of the base layer and the side surface layer, enabling the hot-melting lamination quality to be higher, additionally arranging a group of pressing wheels which are slightly wider than the discharge port at the rear of the printing head according to circumstances, also achieving the purpose of increasing the hot-melting lamination effect, realizing that hot-melting lamination is uniformly carried out for multiple times in the hot-melting lamination process, simultaneously carrying out rolling after each hot-melting lamination is finished, and ensuring that the contents printed before and after the hot-melting lamination are tightly attached.

And step five, selecting a printing mode, namely selecting multi-layer printing, wherein one time is not more than one third of the total thickness, and further ensuring the hot-melt laminating quality by using the multi-layer printing.

Step six, attention points and discharging diameter are preferably 0.5-10mm, and a smaller or larger discharging caliber can be selected according to different requirements of surface smoothness and quality and different purposes of the product, so that higher production efficiency, higher quality and better appearance are achieved.

Step seven, equipment control, namely, the printing equipment is written with a corresponding PLC control program for control, so that one or more printing heads can print simultaneously to improve the printing efficiency,

and step eight, the printing platform is fixed for printing the ultra-large equipment, and the lifting, left-right movement and front-back movement of the printing head are controlled by writing a corresponding PLC control program in the printing equipment so as to meet the requirement of industrial ultra-large equipment production.

And step nine, starting the bottom plate to heat according to the micro-melting condition of the surface of the base layer under the condition that the printing layer can not make the base layer reach the micro-melting condition of the surface of the base layer through direct contact or under the assistance of hot air. The heating temperature of the bottom plate is 30-100 ℃ lower than the hot melting temperature of the printing material.

Working principle; this technology mainly contains the improvement to the transformation of equipment and welding mode, at first need according to the principle of 3D printer, reforms transform this business turn over material mechanism for when this business turn over material mechanism can carry out work like the 3D printer, promote the load that beats printer head. Firstly, raw materials are put into the extruder to be mixed, or an auxiliary agent can be continuously added according to requirements, so that the performances of the extruder in various aspects such as temperature resistance, strength, toughness, corrosion resistance, static resistance and flame retardance are improved, the raw materials are fully stirred and then enter the extruder to be extruded and discharged, the raw materials are directly extruded by a spiral discharging rod in the process to form a strip shape, the section of the strip wire is mainly flat or round, and the strip wire is cooled to form a disc shape;

then the discharged strip-shaped material is subjected to hot melt lamination preparation through an improved printing head, an inclined angle discharge port can be additionally arranged according to needs, so that accurate discharging is realized in the moving process of the printing head, meanwhile, the discharging angle can meet the actual requirement, the discharging position is more accurate, in the printing process, the moving direction of the printing head is taken as the front, a hot air outlet which is basically close to the width of extruded materials is additionally arranged in the front of the printing head, a group of pressing wheels which are slightly wider than the discharge port is additionally arranged behind the printing head, then the printing head of the device is controlled to move through a control program, the hot melt material is discharged downwards through the printing head, the cooled base layer and side surface are heated by the hot air outlet, the effect of micro-melting of the surfaces of the base layer and the side surface layer is achieved, the hot melt lamination quality is higher, and hot melt products fall on the part to be laminated, the discharging diameter is about 0.5-10mm, and different discharging diameters and printing speeds are selected according to the required smoothness of the surface of the product. Meanwhile, when hot melting lamination is carried out, multilayer printing and welding are selected, the thickness of one-time discharged materials does not exceed one third of the total thickness, the lamination quality is further ensured through multilayer printing, when second-layer and third-layer printing is carried out, a hot melting product is rolled by a pressing wheel, tight fit between the contents printed in front and back is ensured, and finally, a seamless and complete large-scale thermoplastic device is printed; while printing, the bottom plate is kept fixed, and the printing head is lifted to control the height of a printed product. And the temperature of the bottom plate is kept at proper time while printing so as to achieve the effect of micro-melting the surface of the overlapped layer.

In addition, in the process, the printing heads can be further upgraded and reformed, and are uniformly controlled through a PLC control program by additionally arranging the printing heads, so that the efficiency is higher and the economic benefit is higher.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A new material new process for producing polypropylene anticorrosion equipment is characterized by comprising the following steps;

one, the material selection ejection of compact, select for use different thermoplastics or resin as the base material according to different requirements (anticorrosive requirement, temperature resistant requirement, wear-resisting requirement, intensity requirement etc.), then add it and plasticize in the inside of extruder, also can continue to add the auxiliary agent according to the demand, improve its temperature resistance, intensity, toughness, all aspects performance such as anticorrosive, extrude the ejection of compact after fully stirring, it is threadlike directly to extrude formation strip through spiral discharge bar at this in-process, strip silk cross-section is given first place to the circle or flat, become the disc after the cooling, wait for the use, change and beat printer head, also can directly pass through PLC control with the melting form raw materials of extruding and directly print.

Two, print the preparation, when preparing to print, because the raw materials intensive mixing has been in the time of preparation strip silk earlier stage, so need not carry out the secondary extrusion mixture to the raw materials when printing, according to the principle of 3D printer, reform transform this business turn over material mechanism, when making this business turn over material mechanism can carry out work like the 3D printer, promote the load of beating printer head, then put into the inside of beating printer head with the raw materials, only need heat printer head this moment, beat the feeding of printer head near-end, it is controllable adjustable according to different raw materials temperature to beat printer head.

Three, the material is printed to 3D printing technique comes the control to beat the removal of printer head, beats the printer head ejection of compact and uses perpendicular ejection of compact as the owner, and can install the inclination discharge gate additional as required, realizes carrying out the multi-angle ejection of compact at the in-process that beats printer head and remove, guarantees simultaneously that the angle of ejection of compact can accord with actual demand, and ejection of compact position is more accurate.

And fourthly, an auxiliary means, wherein the moving direction of the printing head is taken as the front, a hot air outlet which is basically close to the width of the discharge port is additionally arranged in front of the printing head, so that the cooled bottom base layer and the cooled side surface are heated, the effect of micro-melting on the surfaces of the base layer and the side surface layer is achieved, the lamination quality of the hot melt is higher, a group of pressing wheels slightly wider than the discharge port are additionally arranged behind the printing head according to circumstances, the purpose of increasing the lamination effect of the hot melt is also achieved, the hot melt is uniformly overlapped for multiple times in the process of hot melt lamination, meanwhile, the rolling is carried out after each time of lamination is finished, and the close fit between the front and back superposed contents is ensured.

And fifthly, selecting a multi-layer printing mode, taking the thickness as an example, one time is not more than one third of the total thickness, and further ensuring the quality of hot melting overlapping by using the multi-layer printing.

And sixthly, controlling the equipment, namely writing a corresponding PLC control program on the printing equipment for control, and realizing simultaneous printing of one or more printing heads so as to improve the printing efficiency.

2. The new process for producing new material of polypropylene corrosion protection equipment as claimed in claim 1, wherein the diameter of the discharge hole of the thermoplastic plastic is preferably 0.5-10mm, and the discharge hole diameter can be selected to be smaller or larger according to the required surface smoothness, quality and application of the product, so as to achieve higher production efficiency or higher quality and better appearance.