CN111359860A - Clamp spring polyester resin coating processing method and production line - Google Patents
Clamp spring polyester resin coating processing method and production line Download PDFInfo
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- CN111359860A CN111359860A CN202010239500.6A CN202010239500A CN111359860A CN 111359860 A CN111359860 A CN 111359860A CN 202010239500 A CN202010239500 A CN 202010239500A CN 111359860 A CN111359860 A CN 111359860A
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- polyester resin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C19/00—Apparatus specially adapted for applying particulate materials to surfaces
- B05C19/02—Apparatus specially adapted for applying particulate materials to surfaces using fluidised-bed techniques
- B05C19/025—Combined with electrostatic means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
- B05C9/08—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
- B05C9/14—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation the auxiliary operation involving heating or cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0218—Pretreatment, e.g. heating the substrate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
- B05D3/0263—After-treatment with IR heaters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2508/00—Polyesters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
Abstract
The invention discloses a processing method of a jump ring polyester resin coating, which comprises the following steps: step 1), forming a clamp spring; step 2) clamping conductive pliers at two ends of the clamp spring, and electrifying and heating the clamp spring; step 3) after the clamp spring is separated from the conductive clamp, the clamp spring enters an electrostatic fluidized bed to be coated with polyester resin powder, and the primary curing of the coating is completed; step 4), taking the coated snap spring out of the electrostatic fluidized bed, and heating the snap spring in an infrared heat preservation channel to finish final curing of the coating; step 5), supplementing powder to hanging points of the clamp springs; step 6), feeding the compensated clamp spring into an infrared heat preservation channel to heat to finish curing of the hanging point coating; and 7) cooling the clamp spring to obtain a finished product. The invention also discloses a processing production line for the jump ring polyester resin coating. The clamp spring manufactured by the method and the device has better ageing resistance and longer service life.
Description
Technical Field
The invention relates to a method for setting a clamp spring surface coating, in particular to a method for processing a clamp spring polyester resin coating. The invention also relates to a processing production line of the jump ring polyester resin coating.
Background
In a film fixing structure of a plastic film greenhouse, a clamp spring is needed, a plastic dipping layer is arranged on the surface of the clamp spring, and the plastic dipping greenhouse is manufactured through a plastic dipping process. The clamp spring plastic-impregnated layer is made of thermoplastic polyethylene powder all the time, the polyethylene plastic-impregnated layer is poor in mechanical strength, poor in wear resistance, weather resistance and adhesion, prone to stress cracking after being irradiated by ultraviolet rays and not suitable for outdoor long-term use.
With the improvement of economic capability and cognition of people, the use of the high-life greenhouse film is increasingly common, so that the research and the production of the high-life plastic-impregnated snap spring are urgent.
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to provide a processing method of a polyester resin coating of a clamp spring, which is used for processing the polyester resin coating on the surface of the clamp spring.
The invention also aims to provide a processing production line for the polyester resin coating of the jump ring.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
a method of processing a polyester resin coating for a jump spring, the method comprising the steps of:
step 1), forming a clamp spring;
step 2) clamping conductive pliers at two ends of the clamp spring, and electrifying and heating the clamp spring;
step 3) after the clamp spring is separated from the conductive clamp, the clamp spring enters an electrostatic fluidized bed to be coated with polyester resin powder, and the primary curing of the coating is completed;
step 4), taking the coated snap spring out of the electrostatic fluidized bed, and heating the snap spring in an infrared heat preservation channel to finish final curing of the coating;
step 5), supplementing powder to hanging points of the clamp springs;
step 6), feeding the compensated clamp spring into an infrared heat preservation channel to heat to finish curing of the hanging point coating;
and 7) cooling the clamp spring to obtain a finished product.
Optionally, the step 5) further includes: supplementing powder to two ends of the clamp spring;
the step 6) further comprises the following steps: the snap spring with the powder supplemented enters an infrared heat preservation channel to be heated to finish the curing of coatings at two ends;
the diameters of the two ends of the clamp spring are larger than those of other parts of the clamp spring.
Optionally, the thickness of the coating on the surface of the clamp spring is more than or equal to 0.1 mm.
Optionally, the temperature in the infrared heat-preservation channel is 300-350 ℃, and the retention time of the clamp spring in the infrared heat-preservation channel is less than or equal to 3 min.
Optionally, the temperature of the clamp spring after being electrified and heated is more than or equal to 240 ℃, the temperature of the clamp spring entering the electrostatic fluidized bed is more than or equal to 200 ℃, and the retention time in the electrostatic fluidized bed is less than or equal to 2.5 s.
A spring polyester resin coating processing production line comprises a forming processing device, an electric heating device, an electrostatic fluidized bed and a first infrared heating curing device; the forming and processing equipment rolls and presses the steel wire to form a clamp spring, the electrified heating equipment is used for electrifying and heating the clamp spring, the electrostatic fluidized bed is used for carrying out electrostatic treatment on the polyester resin powder in the electrostatic fluidized bed, the clamp spring coats the polyester resin powder in the electrostatic fluidized bed, and the first infrared heating and curing equipment is used for heating the clamp spring to finish coating and curing.
Optionally, the electrostatic fluidized bed includes an air chamber and a fluidizing chamber, the fluidizing chamber is located above the air chamber, a fluidizing plate is disposed between the fluidizing chamber and the air chamber, an electrostatic shed is disposed on the fluidizing plate, the electrostatic shed is connected to an electrostatic generator, a positive pressure air flow is introduced into the air chamber, a polyester resin powder is input into the fluidizing chamber, and the polyester resin powder is blown up by the positive pressure air flow to form a charged powder cloud and fill the air chamber.
Optionally, the sidewalls of the fluidizing chamber are provided with insulating panels.
Optionally, a powder outlet valve is provided to one side of the fluidization chamber.
Optionally, the fluidization chamber is connected with a powder conveying device, and a powder conveying screw shaft is arranged in the powder conveying device.
Optionally, the clamp spring fixing device further comprises a second infrared heating and curing device, and the hanging point trimming and the two ends thickening of the clamp spring are heated in the second infrared heating and curing device to finish coating curing.
Optionally, the inside of first infrared heating curing equipment, second infrared heating curing equipment sets up infrared heat preservation passageway, the inside in infrared heat preservation passageway sets up the conveying chain, the jump ring hangs go out on the conveying chain infrared heat preservation passageway, the jump ring sets up two and hangs the point of hanging on the conveying chain.
Optionally, the curing temperatures of the first infrared heating curing device and the second infrared heating curing device are automatically and thermostatically controlled by thermocouples.
According to the technical scheme, the processing method of the clamp spring polyester resin coating solves the problem of how to coat polyester resin powder on the surface of the clamp spring, and is high in processing efficiency which can reach 22 pieces/min. The coating of the prepared clamp spring has high mechanical strength, abrasion resistance, weather resistance and adhesive force are obviously improved, the clamp spring cannot crack after long-term use, the clamp spring is suitable for outdoor long-term use, and the service life can reach 5-6 years.
The processing production line for the polyester resin coating of the jump ring provided by the invention can be realized by modifying the existing coating processing production line, is low in design and manufacturing cost, and is convenient to popularize and use in manufacturers.
Drawings
FIG. 1 is a flow chart of a method for processing a clamp spring polyester resin coating in embodiment 1 of the invention;
fig. 2 is a schematic structural view of a processing production line for a clamp spring polyester resin coating in embodiment 2 of the present invention;
fig. 3 is a schematic structural view of a processing production line for a clamp spring polyester resin coating in embodiment 3 of the present invention;
FIG. 4 is a schematic view of the circlip of embodiments 2 and 3 of the present invention being heated by electricity;
fig. 5 is a schematic view of a circlip forming processing device in embodiments 2 and 3 of the present invention;
fig. 6 is a schematic diagram of a circlip polyester resin powder plastic-dipping device in embodiments 2 and 3 of the invention.
Description of reference numerals: 1. an air chamber; 2. a fluidization plate; 3. an electrostatic generator; 4. a powder outlet valve; 5. electrostatic shed net; 6. a fluidizing chamber; 7. a clamp spring; 8. an insulating plate; 9. and (5) forming wheels.
Detailed Description
For better understanding of the objects, structure and functions of the present invention, a method for processing a polyester resin coating of a jump spring according to the present invention will be described in detail with reference to the accompanying drawings.
Example 1
Fig. 1 shows an embodiment 1 of the present invention, in which a processing method of a polyester resin coating of a jump spring is disclosed, the method comprising the following steps:
step 1), forming a clamp spring; in this step, the wire roll is pressed into a shape having a continuous trapezoidal bend, and the wire diameter is about 2 mm.
Step 2) clamping conductive pliers at two ends of the clamp spring, and electrifying and heating the clamp spring; in this step, since the steel wire is a conductor, the steel wire itself heated by the current applied thereto to reach a predetermined temperature, so as to satisfy the requirement of primary curing of the coating.
Step 3) the clamp spring is separated from the conductive clamp and then enters an electrostatic fluidized bed to be coated with polyester resin powder, and the primary curing of the coating is completed; in this step, since the steel wire is heated, when the polyester resin powder charged with static electricity is adsorbed on the surface of the steel wire, the temperature of the steel wire may melt the polyester resin powder, achieving preliminary curing.
Step 4), taking out the coated clamp spring from the electrostatic fluidized bed, and heating the clamp spring in an infrared heat preservation channel to finish final curing of the coating; in the step, the temperature in the infrared heat preservation channel is heated from the outside of the steel wire, and the polyester resin powder on the surface of the steel wire is further melted to carry out crosslinking reaction, so that final solidification is realized.
Step 5), supplementing powder to hanging points of the clamp springs; in the step, as the clamp spring is hung on the hook and goes out of the infrared heat preservation channel, the steel wire or the thin coating can be exposed at the hanging point, if powder supplement is not carried out, the coating is easy to crack from the hanging point in the using process, and the hanging point is easy to corrode, so that the powder supplement treatment must be carried out on the hanging point.
Step 6), feeding the supplemented clamp spring into an infrared heat preservation channel to heat to finish curing of the hanging point coating; in the step, the clamp spring subjected to powder supplementing treatment at the hanging point enters the infrared heat preservation channel again for heating, and the supplemented polyester resin powder at the hanging point is melted for carrying out crosslinking reaction to realize solidification.
And 7) cooling the clamp spring to obtain a finished product. In the step, after the clamp spring is conveyed out of the infrared heat preservation channel, natural cooling is completed after the clamp spring runs on a conveying chain for a period of time, and then the clamp spring can be bundled and packaged. In order to increase the cooling speed, the clamp spring hung on the conveying chain can also be cooled by blowing air.
In order to prevent the greenhouse film from being pierced by the clamp spring in the using process, the following steps can be added:
step 5) also comprises the following steps: supplementing powder to two ends of the clamp spring;
step 6) also comprises the following steps: feeding the supplemented clamp spring into an infrared heat preservation channel for heating to finish the curing of coatings at two ends;
the diameters of the two ends of the clamp spring are larger than those of other parts of the clamp spring by supplementing powder, heating and curing the two ends of the clamp spring. The two ends of the clamp spring are thickened, so that the greenhouse film can be well prevented from being pierced by the clamp spring in the use process.
The hanging point powder supplementing and the two end powder supplementing of the clamp spring can be automatically carried out on a production line, specifically, small powder boxes can be respectively arranged on two sides of a conveying chain, when the clamp spring passes through, the hanging point and the two ends of the clamp spring enter the small powder boxes, the small powder boxes are immersed in polyester resin powder, the polyester resin powder can be coated on the hanging point and the two ends, and then the polyester resin powder enters an infrared heat preservation channel to be heated to complete the curing of the supplementary coating.
The more detailed process parameters in the above steps are as follows:
the thickness of the coating on the surface of the finally prepared clamp spring finished product is more than or equal to 0.1 mm.
In the step 2), the temperature of the clamp spring after being electrified and heated is more than or equal to 240 ℃, in the step 3), the temperature of the clamp spring entering the electrostatic fluidized bed is more than or equal to 200 ℃, and the retention time in the electrostatic fluidized bed is less than or equal to 2.5 s.
In the steps 4) and 6), the temperature in the infrared heat-preservation channel is 300-350 ℃, and the holding time of the clamp spring in the infrared heat-preservation channel is less than or equal to 3 min.
The processing method of the clamp spring polyester resin coating in the embodiment has the following beneficial effects:
the processing method for the clamp spring polyester resin coating in the embodiment solves the problem of how to coat polyester resin powder on the surface of the clamp spring, and is high in processing efficiency which can reach 22 pieces/min. The coating of the prepared clamp spring is high in mechanical strength, abrasion resistance, weather resistance and adhesive force are obviously improved, and the clamp spring cannot crack after being used for a long time, so that the clamp spring is suitable for outdoor long-term use. Through comparison tests, the service life of the polyethylene coating clamp spring in the prior art is generally 2-3 years, and the service life of the polyester resin coating clamp spring in the embodiment can reach 5-6 years.
Example 2
As shown in fig. 2, fig. 4, fig. 5 and fig. 6, the embodiment 2 of the present invention discloses a jump ring polyester resin coating processing line, which includes a forming processing device, an electric heating device, an electrostatic fluidized bed and a first infrared heating curing device; the forming processing equipment rolls the steel wire to form a clamp spring, the electrified heating equipment is used for electrifying and heating the clamp spring, the electrostatic fluidized bed is used for carrying out electrostatic treatment on the polyester resin powder inside, the clamp spring is coated with the polyester resin powder in the electrostatic fluidized bed, and the first infrared heating and curing equipment is used for heating the clamp spring to finish coating and curing.
As shown in fig. 4, a forming wheel 9 is provided inside the forming processing equipment, and the wire roll is pressed into a shape having a continuous trapezoidal bend, with a wire diameter of about 2 mm.
As shown in fig. 5, when the power-on heating device heats the clamp spring 7, the clamp spring can be clamped at two ends of the clamp spring to heat the clamp spring by supplying direct current.
As shown in fig. 6, the electrostatic fluidized bed includes an air chamber 1 and a fluidizing chamber 6, the fluidizing chamber 6 is located at the upper part of the air chamber 1, a fluidizing plate 2 is arranged between the fluidizing chamber 6 and the air chamber 1, an electrostatic shed 5 is arranged on the fluidizing plate 2, the electrostatic shed 5 is connected with an electrostatic generator 3, positive pressure air flow is introduced into the air chamber 1, polyester resin powder is input into the fluidizing chamber 6, and the polyester resin powder is blown up by the positive pressure air flow to be charged powder cloud and fill the air chamber 1.
The fluidization plate 2 is a porous plate, and positive pressure gas flow of the air chamber 1 can enter the fluidization chamber 6 through the fluidization plate 2 to blow up the polyester resin powder. The electrostatic shed 5 is a metal net, and can make the polyester resin powder charged with static electricity by connecting the electrostatic generator 3. The static generator 3 is arranged outside the fluidization chamber 6 and is connected with the static shed 5 through a lead, and the parameters of the static generator 3 can be selected to be 100 Kv.
The lateral wall of fluidization chamber 6 sets up insulation board 8, has avoided letting the staff mistake to touch electrified powder cloud, guarantees staff's operation safety.
One side of the fluidization chamber 6 is provided with a powder outlet valve 4, the polyester resin powder blown up by the positive pressure gas flow is output from the powder outlet valve 4 to the fluidization chamber 6, and the outside is provided with a container for recycling the polyester resin powder, so that the polyester resin powder is convenient to recycle.
The fluidization chamber 6 is connected with a powder conveying device, a powder feeding screw shaft is arranged in the powder conveying device, and the powder conveying screw shaft can continuously convey the polyester resin powder to the fluidization chamber 6. The powder feeding screw shaft continuously feeds the polyester resin powder into the fluidizing chamber 6. The recycled polyester resin powder can be poured into a powder conveying device for recycling.
And taking the clamp spring 7 subjected to dip coating out of the electrostatic fluidized bed through a lifting mechanism, hanging the clamp spring on a hook of a conveying chain, and entering first infrared heating curing equipment for heat preservation and curing.
The inside of first infrared heating curing equipment sets up infrared heat preservation passageway, and the inside in infrared heat preservation passageway sets up the conveying chain, and jump ring 7 hangs and goes out infrared heat preservation passageway on the conveying chain, and jump ring 7 sets up two hanging points and hangs on the conveying chain. The hanging point of jump ring among the prior art is three usually, and jump ring 7 hanging point changes into two in this embodiment, has reduced jump ring and has mended powder department, and the integrality of coating obtains improving.
The curing temperature of the first infrared heating curing equipment is automatically controlled at constant temperature by adopting a thermocouple, so that required constant output is achieved, and the curing quality of the coating is ensured.
In this embodiment, the hanging point trimming and the two-end thickening of the clamp spring 7 can be returned to the first infrared heating curing device to be heated to complete the coating curing. Therefore, the clamp spring 7 after powder supplement is required to be hung on the conveying chain in front of the first infrared heating and curing device again, and the clamp spring 7 can enter the first infrared heating and curing device to heat and finish hanging point and two-end coating curing.
The whole production process of the clamp spring polyester resin coating processing production line can be automatically completed through PLC control, the processing efficiency is high, the number of required workers is small, and the harm of pollution generated by spraying to the workers is reduced as much as possible.
The processing production line for the clamp spring polyester resin coating in the embodiment can realize the improvement of the existing coating processing production line by:
adding an electrostatic device to the fluidized bed; removing the coal gas heating powder supplementing device, thickening the hanging point trimming part and two ends of the clamp spring by adopting an infrared heating and curing process and a corresponding device; the main curing temperature adopts the automatic constant temperature control of a thermocouple, and other temperature controls are manually adjustable; on the premise of not influencing the efficiency of the production line, the time for heating the clamp spring by a power supply and immersing the clamp spring into the fluidized bed for the first time is shortened; the original secondary electric heating device is removed.
Example 3
As shown in fig. 3, an embodiment 3 of the present invention is different from the embodiment 2 in that the processing line for processing the circlip polyester resin coating further includes a second infrared heating curing device, and the hanging point trimming and the two ends thickening of the circlip 7 are heated in the second infrared heating curing device to complete the coating curing.
The inside of second infrared heating curing equipment sets up infrared heat preservation passageway, and the inside in infrared heat preservation passageway sets up the conveying chain, and jump ring 7 hangs and goes out infrared heat preservation passageway on the conveying chain.
The curing temperature of the second infrared heating curing equipment is automatically controlled at constant temperature by adopting a thermocouple, so that the required constant output is achieved, and the curing quality of the coating is ensured.
Through setting up the infrared heating curing equipment of second, avoided the jump ring 7 of benefit powder to return first infrared heating curing equipment, influence the work load of the jump ring 7 of following the output of electrostatic fluidized bed to machining efficiency can further be improved.
The other structure of the clamp spring polyester resin coating processing line in this embodiment 3 is the same as that of embodiment 2, and the description thereof will not be repeated.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.
In the description of the present application, it is to be understood that the terms "middle", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.
In addition, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (10)
1. A processing method of a polyester resin coating of a jump spring is characterized by comprising the following steps:
step 1), forming a clamp spring;
step 2) clamping conductive pliers at two ends of the clamp spring, and electrifying and heating the clamp spring;
step 3) the clamp spring is separated from the conductive clamp and then enters an electrostatic fluidized bed to be coated with polyester resin powder;
step 4), taking the coated snap spring out of the electrostatic fluidized bed, and heating the snap spring in an infrared heat preservation channel to finish coating curing;
step 5), supplementing powder to hanging points of the clamp springs;
step 6), feeding the compensated clamp spring into an infrared heat preservation channel to heat to finish curing of the hanging point coating;
and 7) cooling the clamp spring to obtain a finished product.
2. The processing method for coating the circlip polyester resin as claimed in claim 1, wherein the step 5) further comprises: supplementing powder to two ends of the clamp spring;
the step 6) further comprises the following steps: the snap spring with the powder supplemented enters an infrared heat preservation channel to be heated to finish the curing of coatings at two ends;
the diameters of the two ends of the clamp spring are larger than those of other parts of the clamp spring.
3. The processing method for coating the circlip polyester resin as claimed in any one of claims 1 to 2, wherein the thickness of the coating on the circlip surface is more than or equal to 0.1 mm.
4. The processing method of polyester coating for circlip as defined in any one of claims 1-2 wherein the temperature in the infrared heat preservation channel is 300-350 ℃, and the time of the circlip being retained in the infrared heat preservation channel is less than or equal to 3 min.
5. The processing method for coating the clamp spring polyester resin as claimed in claim 1, wherein the temperature of the clamp spring after being electrified and heated is more than or equal to 240 ℃, the temperature of the clamp spring entering the electrostatic fluidized bed is more than or equal to 200 ℃, and the retention time in the electrostatic fluidized bed is less than or equal to 2.5 s.
6. A spring polyester resin coating processing production line is characterized by comprising a forming processing production line, an electric heating device, an electrostatic fluidized bed and a first infrared heating and curing device; the forming and processing production line rolls and presses a steel wire to form a clamp spring, the clamp spring is electrified and heated by the electrified heating equipment, the electrostatic fluidized bed is used for carrying out electrostatic treatment on the polyester resin powder in the electrostatic fluidized bed, the clamp spring is coated with the polyester resin powder in the electrostatic fluidized bed, and the first infrared heating and curing equipment is used for heating the clamp spring to finish coating and curing.
7. The processing production line for polyester resin coatings of snap springs as claimed in claim 6, wherein the electrostatic fluidized bed comprises an air chamber and a fluidizing chamber, the fluidizing chamber is located at the upper part of the air chamber, a fluidizing plate is arranged between the fluidizing chamber and the air chamber, an electrostatic shed net is arranged on the fluidizing plate and connected with an electrostatic generator, positive pressure air flow is introduced into the air chamber, polyester resin powder is input into the fluidizing chamber, and the polyester resin powder is blown up by the positive pressure air flow to form charged powder cloud to fill the air chamber.
8. The processing production line for coating the circlip polyester resin as claimed in claim 7, wherein an insulating plate is arranged on the side wall of the fluidization chamber;
a powder outlet valve is arranged on one side of the fluidizing chamber;
the fluidization chamber is connected with a powder conveying device, and a powder conveying screw shaft is arranged in the powder conveying device.
9. The processing production line for coating the circlip polyester resin as claimed in claim 6, further comprising a second infrared heating curing device, wherein the hanging point trimming and the two-end thickening of the circlip are carried out in the second infrared heating curing device to complete the coating curing.
10. The processing production line for the clamp spring polyester resin coating according to claim 9, wherein an infrared heat preservation channel is arranged inside the first infrared heating curing device and the second infrared heating curing device, a conveying chain is arranged inside the infrared heat preservation channel, the clamp spring is hung on the conveying chain to enter and exit the infrared heat preservation channel, and the clamp spring is provided with two hanging points and hung on the conveying chain;
and the curing temperatures of the first infrared heating curing equipment and the second infrared heating curing equipment are automatically controlled at constant temperature by adopting thermocouples.
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| CN202010239500.6A CN111359860B (en) | 2020-03-30 | 2020-03-30 | Clamp spring polyester resin coating processing method and production line |
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| CN202010239500.6A CN111359860B (en) | 2020-03-30 | 2020-03-30 | Clamp spring polyester resin coating processing method and production line |
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