CN114147185A - Manufacturing process of rear clothes rack of electric vehicle - Google Patents
Manufacturing process of rear clothes rack of electric vehicle Download PDFInfo
- Publication number
- CN114147185A CN114147185A CN202111354200.3A CN202111354200A CN114147185A CN 114147185 A CN114147185 A CN 114147185A CN 202111354200 A CN202111354200 A CN 202111354200A CN 114147185 A CN114147185 A CN 114147185A
- Authority
- CN
- China
- Prior art keywords
- clothes hanger
- rear clothes
- electric vehicle
- manufacturing process
- casting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
-
- 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
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
- B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
- B24B9/04—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of metal, e.g. skate blades
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J7/00—Luggage carriers
- B62J7/02—Luggage carriers characterised by the arrangement thereof on cycles
- B62J7/04—Luggage carriers characterised by the arrangement thereof on cycles arranged above or behind the rear wheel
Abstract
The invention discloses a manufacturing process of a rear clothes rack of an electric vehicle, and relates to the technical field of electric vehicle production. The invention comprises the following steps: the method comprises the following steps: smelting the iron blocks; step two: casting the smelted material into a mould for casting; step three: roughly polishing the cast rear clothes hanger; step four: carrying out flash and burr removal on the roughly polished rear clothes hanger; step five: and detecting the grinded rear clothes hanger. According to the invention, the condition of insufficient casting caused by cooling of the rear clothes hanger can be reduced by increasing the casting speed of the rear clothes hanger, so that the strength and the production efficiency of the rear clothes hanger are improved. The electrostatic painting is carried out on the surface of the rear clothes hanger, so that the painting on the surface of the rear clothes hanger is uniform, the condition that the rear clothes hanger needs paint repair is reduced, and the production efficiency of the rear clothes hanger is further improved.
Description
Technical Field
The invention belongs to the technical field of electric vehicle production, and particularly relates to a manufacturing process of a rear clothes hanger of an electric vehicle.
Background
The rear clothes hanger of the electric vehicle is a device which plays a role in fixing and supporting a back cushion on the tail of the electric vehicle, the structural design and the processing technology of the rear clothes hanger of the electric vehicle are very important, and the material, the size, the shape and the like of the rear clothes hanger have direct influence on the stability, the strength and the toughness of the rear clothes hanger.
The manufacturing process of most rear clothes hangers of electric vehicles on the market has a long processing period, and the rear clothes hangers are not easy to be finely manufactured, so that the efficiency of the manufacturing process is low, and the produced rear clothes hangers are easy to rust and bend.
Disclosure of Invention
The invention aims to provide a manufacturing process of a rear clothes hanger of an electric vehicle, which solves the technical problem of poor quality of the rear clothes hanger in the prior art.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a manufacturing process of a rear clothes rack of an electric vehicle comprises the following steps:
the method comprises the following steps: smelting the iron blocks;
step two: casting the smelted material into a mould for casting;
step three: roughly polishing the cast rear clothes hanger;
step four: carrying out flash and burr removal on the roughly polished rear clothes hanger;
step five: detecting the ground rear clothes hanger;
step six: cleaning and spraying paint on the rear clothes hanger which is qualified;
step seven: and carrying out secondary detection on the painted rear clothes hanger.
Optionally, the casting process in the second step includes three stages, namely a liquid lifting stage, a mold filling stage and a pressure maintaining stage, wherein the pressurization speed of the liquid lifting stage is 1-3Kpa/s, the pressurization speed of the mold filling stage is 4-8Kpa/s, the mold filling is completed before the mold filling stage is pressurized to the maximum value, and then the pressure maintaining stage is entered.
Optionally, the casting process in the second step further includes placing the sand core after the mold opening into a casting mold, closing the mold, and injecting low pressure and mold filling into the cavity from a liquid lifting channel of the casting mold.
Optionally, the third step further includes polishing the rear clothes hanger by using a polishing device, wherein the rotation frequency of the polishing motor is 3 revolutions per second, the polishing time is 7 minutes, the rotation frequency of the polishing motor is adjusted to 5 seconds per revolution, and the polishing time is 8 minutes.
Optionally, the fifth step further comprises detecting the thickness, width, roughness and smoothness of the rear clothes rack, and marking the qualified rear clothes rack.
Optionally, in the sixth step, the rear clothes hanger is painted by using an electrostatic spray gun.
Optionally, the distance between the nozzle of the electrostatic spray gun and the workpiece is 200-300mm, and the voltage between the electrostatic spray gun and the rear clothes hanger is 50-100 kv.
Optionally, the atomization air pressure of the electrostatic spray gun is 0.1-0.2MPa, and the forming air pressure of the electrostatic spray gun is 0.1-0.18 MPa.
Optionally, the sixth step further comprises baking the rear clothes hanger by using an oven, wherein the oven temperature is 14-150 ℃, and the baking time is 40-50 min.
Optionally, the seventh step further comprises selecting, marking and recycling the finished product of the rear clothes hanger with concave points, cracks and radian deformation for secondary processing.
The embodiment of the invention has the following beneficial effects:
according to the invention, the condition of insufficient casting caused by cooling of the rear clothes hanger can be reduced by increasing the casting speed of the rear clothes hanger, so that the strength and the production efficiency of the rear clothes hanger are improved. The electrostatic painting is carried out on the surface of the rear clothes hanger, so that the painting on the surface of the rear clothes hanger is uniform, the condition that the rear clothes hanger needs paint repair is reduced, and the production efficiency of the rear clothes hanger is further improved.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic process flow diagram of a rear clothes hanger according to an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
To maintain the following description of the embodiments of the present invention clear and concise, a detailed description of known functions and known components of the invention have been omitted.
Referring to fig. 1, in this embodiment, a process for manufacturing a rear clothes hanger of an electric vehicle is provided, including: the method comprises the following steps:
the method comprises the following steps: smelting the iron blocks;
step two: casting the smelted material into a mould for casting;
step three: roughly polishing the cast rear clothes hanger;
step four: carrying out flash and burr removal on the roughly polished rear clothes hanger;
step five: detecting the ground rear clothes hanger;
step six: cleaning and spraying paint on the rear clothes hanger which is qualified;
step seven: and carrying out secondary detection on the painted rear clothes hanger.
It should be noted that all the electric devices referred to in this application may be powered by a storage battery or an external power source.
According to the invention, the condition of insufficient casting caused by cooling of the rear clothes hanger can be reduced by increasing the casting speed of the rear clothes hanger, so that the strength and the production efficiency of the rear clothes hanger are improved. The electrostatic painting is carried out on the surface of the rear clothes hanger, so that the painting on the surface of the rear clothes hanger is uniform, the condition that the rear clothes hanger needs paint repair is reduced, and the production efficiency of the rear clothes hanger is further improved.
The casting process in the second step of the embodiment comprises three stages, namely a liquid rising stage, a mold filling stage and a pressure maintaining stage, wherein the pressurization speed of the liquid rising stage is 1-3Kpa/s, the pressurization speed of the mold filling stage is 4-8Kpa/s, the mold filling stage completes mold filling before the mold filling stage is pressurized to the maximum value, and then the pressure maintaining stage is carried out.
The second-step casting process of the embodiment further comprises the steps of placing the sand core which is manufactured after the mold opening is carried out in the casting mold, closing the mold, and then injecting low pressure and mold filling into the cavity from the liquid lifting channel of the casting mold. By injecting low pressure and filling mold into the cavity, the problems of insufficient casting and low casting performance can be reduced.
Step three of this embodiment still includes to use grinding device to polish back clothes hanger, and the rotational frequency of the motor of polishing is 3 revolutions per second, and it is 7 minutes to polish duration, adjusts the rotational frequency of the motor of polishing to 5 seconds per revolution again, and it is 8 minutes to polish duration. The polishing process can make the surface of the rear clothes rack smoother.
Step five of this embodiment further includes detecting the thickness, width, roughness, and smoothness of the rear hanger and marking on the qualified rear hanger. The problems on the rear clothes rack can be detected in time through detection, so that the processing cost in the later period is reduced.
The sixth step of the embodiment further comprises painting the rear clothes hanger by using an electrostatic spray gun; the distance between the nozzle of the electrostatic spray gun and the workpiece is 200-300mm, and the voltage between the electrostatic spray gun and the rear clothes hanger is 50-100 kv; the atomization air pressure of the electrostatic spray gun is 0.1-0.2MPa, and the forming air pressure of the electrostatic spray gun is 0.1-0.18 MPa. By performing electrostatic painting on the rear clothes hanger, the painting on the surface of the rear clothes hanger can be more uniform.
And step six of the embodiment also comprises the step of baking the rear clothes hanger by using an oven, wherein the temperature of the oven is 14-150 ℃, and the baking time is 40-50 min.
The seventh step of the embodiment further comprises the steps of selecting the finished product rear clothes hanger gold with concave points, cracks and radian deformation, marking and recycling for secondary processing.
The above embodiments may be combined with each other.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Claims (10)
1. The manufacturing process of the rear clothes rack of the electric vehicle is characterized by comprising the following steps:
the method comprises the following steps: smelting the iron blocks;
step two: casting the smelted material into a mould for casting;
step three: roughly polishing the cast rear clothes hanger;
step four: carrying out flash and burr removal on the roughly polished rear clothes hanger;
step five: detecting the ground rear clothes hanger;
step six: cleaning and spraying paint on the rear clothes hanger which is qualified;
step seven: and carrying out secondary detection on the painted rear clothes hanger.
2. The manufacturing process of the rear clothes hanger of the electric vehicle as claimed in claim 1, wherein the casting process in the second step comprises three stages of a liquid rising stage, a mold filling stage and a pressure maintaining stage, the pressurization speed of the liquid rising stage is 1-3Kpa/s, the pressurization speed of the mold filling stage is 4-8Kpa/s, the mold filling stage completes mold filling before the mold filling stage is pressurized to the maximum value, and then the pressure maintaining stage is carried out.
3. The manufacturing process of the rear clothes hanger of the electric vehicle as claimed in claim 2, wherein the casting process in the second step further comprises the steps of placing the sand core made after the mold opening into a casting mold and combining the mold, and then injecting low-pressure and mold filling into the cavity from a liquid lifting channel of the casting mold.
4. The manufacturing process of the rear clothes hanger of the electric vehicle as claimed in claim 1, wherein the third step further comprises polishing the rear clothes hanger by using a polishing device, wherein the rotational frequency of the polishing motor is 3 revolutions per second, the polishing time is 7 minutes, and then the rotational frequency of the polishing motor is adjusted to 5 seconds per revolution, and the polishing time is 8 minutes.
5. The manufacturing process of the rear clothes hanger of the electric vehicle as claimed in claim 1, wherein the fifth step further comprises detecting the thickness, width, roughness and smoothness of the rear clothes hanger and marking the qualified rear clothes hanger.
6. The manufacturing process of a rear clothes hanger for electric vehicles as claimed in claim 1, further comprising painting the rear clothes hanger using an electrostatic spray gun in step six.
7. The manufacturing process of the rear clothes hanger of the electric vehicle as claimed in claim 6, wherein the distance between the nozzle of the electrostatic spray gun and the workpiece is 200- > 300mm, and the voltage between the electrostatic spray gun and the rear clothes hanger is 50-100 kv.
8. The manufacturing process of the rear clothes hanger of the electric vehicle as claimed in claim 6, wherein the atomizing air pressure of the electrostatic spray gun is 0.1-0.2MPa, and the forming air pressure of the electrostatic spray gun is 0.1-0.18 MPa.
9. The manufacturing process of the rear clothes hanger of the electric vehicle as claimed in claim 1, wherein the sixth step further comprises baking the rear clothes hanger by using an oven, wherein the oven temperature is 14-150 ℃, and the baking time is 40-50 min.
10. The manufacturing process of the rear clothes rack of the electric vehicle as claimed in claim 1, wherein the seventh step further comprises selecting, marking and recycling the finished rear clothes rack gold with concave points, cracks and radian deformation for secondary processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111354200.3A CN114147185A (en) | 2021-11-15 | 2021-11-15 | Manufacturing process of rear clothes rack of electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111354200.3A CN114147185A (en) | 2021-11-15 | 2021-11-15 | Manufacturing process of rear clothes rack of electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114147185A true CN114147185A (en) | 2022-03-08 |
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| CN202111354200.3A Pending CN114147185A (en) | 2021-11-15 | 2021-11-15 | Manufacturing process of rear clothes rack of electric vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024069022A1 (en) * | 2022-09-27 | 2024-04-04 | Industrias Proa, S.A. | Method for producing enamels for vehicle bodywork and composition of the paint |
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