阅读说明：本技术 一种pc料表面损伤热风整平修复方法 (Hot-air leveling and repairing method for surface damage of PC material ) 是由 罗小凯 周建军 于 2020-07-29 设计创作，主要内容包括：本发明提供了一种PC料表面损伤热风整平修复方法,包括：固定待修复表面与喷枪；将所述喷枪枪嘴与所述待修复表面的角度调节至第一设定范围；基于所述喷枪枪嘴与所述待修复表面的角度,调节所述喷枪枪嘴与待修复表面的距离至设定第二设定范围；基于所述喷枪枪嘴与所述待修复表面的角度和距离,调节所述喷枪枪嘴的喷射热风在到达所述待修复表面时,符合预设的温度范围；在所述温度范围内,通过所述喷枪枪嘴喷射出的热风对所述待修复表面进行修复至所述待修复表面定性。本方案避免采用化学制剂涂抹等方式,损害操作人员的身体健康、操作简单、省时省力、效果显著。(The invention provides a hot air leveling and repairing method for surface damage of a PC material, which comprises the following steps: fixing the surface to be repaired and the spray gun; adjusting the angle between the spray gun nozzle and the surface to be repaired to a first set range; adjusting the distance between the spray gun nozzle and the surface to be repaired to a set second set range based on the angle between the spray gun nozzle and the surface to be repaired; adjusting the hot air sprayed by the spray gun nozzle to meet a preset temperature range when reaching the surface to be repaired based on the angle and the distance between the spray gun nozzle and the surface to be repaired; and in the temperature range, repairing the surface to be repaired by hot air jetted by the spray gun nozzle until the surface to be repaired is qualitative. The scheme avoids adopting modes such as chemical preparation smearing and the like, harms physical health of operators, is simple to operate, saves time and labor and has obvious effect.)

1. A hot air leveling and repairing method for surface damage of a PC material is characterized by comprising the following steps:

fixing the surface to be repaired and the spray gun;

adjusting the angle between the spray gun nozzle and the surface to be repaired to a first set range;

adjusting the distance between the spray gun nozzle and the surface to be repaired to a set second set range based on the angle between the spray gun nozzle and the surface to be repaired;

adjusting the hot air sprayed by the spray gun nozzle to meet a preset temperature range when reaching the surface to be repaired based on the angle and the distance between the spray gun nozzle and the surface to be repaired;

and in the temperature range, repairing the surface to be repaired by hot air jetted by the spray gun nozzle until the surface to be repaired is qualitative.

2. The method of claim 1, wherein the first set range is 80 ° to 90 °.

3. The method according to claim 1, wherein the second set range is 5-15 mm.

4. The method of claim 1, wherein the repairing the surface to be repaired to a quality of the surface to be repaired by hot air emitted from the lance nozzle in the temperature range comprises:

adjusting the spray power of the spray gun and the angle between the nozzle of the spray gun and the surface to be repaired within the temperature range;

according to the adjusted angle, the scratch on the surface to be repaired is melted along the scratch matrix;

and after the surface to be repaired is restored to be consistent with the peripheral arc surface or plane, increasing the distance between the spray gun nozzle and the surface to be repaired, and gradually reducing the temperature of the surface to be repaired to ensure that the surface to be repaired is qualitative.

5. The method according to claim 4, wherein the injection power is in the range of 1-10 kW.

6. The method of claim 1, wherein the lance spray repair time is in the range of 3 to 15 seconds.

7. The method of claim 1, further comprising:

and after the surface to be repaired is qualitative, blowing cold air into the scratch to solidify the scratch.

8. The method of claim 1, wherein the spray size of the spray gun nozzle is set in a range of 3 to 20 mm.

Technical Field

The invention relates to the field of material repair, in particular to a hot air leveling and repairing method for surface damage of a PC material.

Background

The PC material (polycarbonate) is a colorless and transparent amorphous thermoplastic material, has heat resistance, impact resistance and flame retardance, and has good mechanical properties at common use temperature, so that the PC material is widely applied to the fields of product shells, packaging, decoration and the like. However, the PC material is also limited in its use, and its properties may cause scratch, and the surface of the PC material may be scratched by shaking and friction during transportation, and when the PC material is used as a part of a product housing, a decoration, or the like, the scratch may seriously affect the beauty of the product.

Therefore, the damaged PC material needs to be repaired, and in the prior art, the surface of the PC material is repaired by adopting modes of smearing chemical preparations and the like, so that on one hand, the operation is complex, the effect is difficult to determine, and on the other hand, the body health of operators is not facilitated.

Disclosure of Invention

The invention aims to provide a hot air leveling and repairing method for surface damage of a PC material, which can solve the above technical problems. The specific scheme is as follows:

a hot air leveling and repairing method for surface damage of a PC material comprises the following steps:

fixing the surface to be repaired and the spray gun;

adjusting the angle between the spray gun nozzle and the surface to be repaired to a first set range;

adjusting the distance between the spray gun nozzle and the surface to be repaired to a set second set range based on the angle between the spray gun nozzle and the surface to be repaired;

adjusting the hot air sprayed by the spray gun nozzle to meet a preset temperature range when reaching the surface to be repaired based on the angle and the distance between the spray gun nozzle and the surface to be repaired;

and in the temperature range, repairing the surface to be repaired by hot air jetted by the spray gun nozzle until the surface to be repaired is qualitative.

Optionally, the first setting range is 80 ° to 90 °.

Optionally, the second setting range is 5-15 mm.

Optionally, in the temperature range, the repairing the surface to be repaired by the hot air jetted from the nozzle of the spray gun until the surface to be repaired is qualitative includes:

adjusting the spray power of the spray gun and the angle between the nozzle of the spray gun and the surface to be repaired within the temperature range;

according to the adjusted angle, the scratch on the surface to be repaired is melted along the scratch matrix;

and after the surface to be repaired is restored to be consistent with the peripheral arc surface or plane, increasing the distance between the spray gun nozzle and the surface to be repaired, and gradually reducing the temperature of the surface to be repaired to ensure that the surface to be repaired is qualitative.

Optionally, the range of the injection power is 1-10 kW.

Optionally, the spray gun spray repair time is in the range of 3-15 seconds.

Optionally, the method further includes:

and after the surface to be repaired is qualitative, blowing cold air into the scratch to solidify the scratch.

Optionally, the spray size of the nozzle of the spray gun is set to be 3-20 mm.

Compared with the prior art, the scheme of the embodiment of the invention at least has the following beneficial effects:

according to the hot air leveling and repairing method for the surface damage of the PC material, provided by the invention, the damage to the surface of the PC material is repaired by adopting the hot air jetted by the spray gun nozzle, so that the damage to the health of an operator due to the adoption of modes such as chemical agent coating and the like is avoided; the hot air leveling and repairing method for PC material surface damage provided by the invention is simple to operate, time-saving and labor-saving, and has an obvious effect.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

FIG. 1 is a flow chart of a hot air leveling repair method for surface damage of a PC material according to an embodiment of the invention;

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, and "a plurality" typically includes at least two.

It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It should be understood that although the terms first, second, third, etc. may be used to describe … … in embodiments of the present invention, these … … should not be limited to these terms. These terms are used only to distinguish … …. For example, the first … … can also be referred to as the second … … and similarly the second … … can also be referred to as the first … … without departing from the scope of embodiments of the present invention.

The words "if", as used herein, may be interpreted as "at … …" or "at … …" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrases "if determined" or "if detected (a stated condition or event)" may be interpreted as "when determined" or "in response to a determination" or "when detected (a stated condition or event)" or "in response to a detection (a stated condition or event)", depending on the context.

It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in the article or device in which the element is included.

Alternative embodiments of the present invention are described in detail below with reference to the accompanying drawings.

As shown in fig. 1, an embodiment of the present invention provides a method for hot-air leveling and repairing a surface damage of a PC material, which specifically includes the following steps:

step S101: and fixing the surface to be repaired and the spray gun.

As an alternative embodiment, the surface to be repaired is fixed, for example by means of clamps; the surface to be repaired is kept flat, the damaged surface is convenient to repair, and in the fixed surface to be repaired, the scratch position is preferably positioned in the center of the surface to be repaired, so that the operation of the spray gun is convenient.

As an optional implementation mode, the spray gun can also be fixed above the surface to be repaired through the fixing support, and the fixing support can be continuously adjustable in multiple directions, so that the angle and/or distance between the spray gun and the surface to be repaired can be adjusted to a preset position. As one of the embodiments, including but not limited to, the adjustment of the spray gun by a computer controlled stepper motor.

Step S102: and adjusting the angle between the spray gun nozzle and the surface to be repaired to a first set range.

As an optional implementation mode, the spray gun is fixed on a support, and the spiral knob on the fixed support is controlled by a computer to adjust the spray gun in multiple angles and/or longitudinally, so that the nozzle of the spray gun rotates towards the surface to be repaired;

simultaneously adjusting the scratch position on the surface to be repaired to rotate in the direction opposite to the spray gun;

and adjusting the angle between the nozzle of the spray gun and the position of the scratch on the surface to be repaired from a slightly larger range to 1-degree fine adjustment until the angle between the spray gun and the surface to be repaired is in a first set range of 80-90 degrees. Wherein, when the included angle between the spray gun nozzle and the surface to be repaired is 80-90 degrees, the spray efficiency of the spray gun nozzle is the highest.

Step S103: and adjusting the distance between the spray gun nozzle and the surface to be repaired to a set second set range based on the angle between the spray gun nozzle and the surface to be repaired.

When the angle between the spray gun nozzle and the scratch position on the surface to be repaired is in a first set range of 80-90 degrees, the distance between the spray gun nozzle and the surface to be repaired is gradually reduced by using the control of a computer in mm magnitude until the distance between the spray gun nozzle and the surface to be repaired reaches a second set range of 5-15 mm. When the distance between the spray gun nozzle and the surface to be repaired is 5-15mm, the spraying force of the spray gun nozzle is strongest.

Step S104: and adjusting the hot air sprayed by the spray gun nozzle to meet a preset temperature range when reaching the surface to be repaired based on the angle and the distance between the spray gun nozzle and the surface to be repaired.

When the angle between the spray gun nozzle and the scratch position on the surface to be repaired is in a first set range of 80-90 degrees, and simultaneously when the distance between the spray gun nozzle and the surface to be repaired reaches a second set range of 5-15mm, the temperature of hot air sprayed by the spray gun nozzle is gradually increased by using the computer control, and the temperature is in a range of 230-240 ℃ which accords with the preset temperature range. When hot air jetted by the nozzle of the spray gun reaches the surface to be repaired, scratches on the surface to be repaired can be melted, and accordingly repair is achieved.

As an optional implementation mode, the optimal temperature range of hot air is found by utilizing the hot air at the temperature of 230-240 ℃ which is close to the melting point of the PC material.

Step S105: and in the temperature range, repairing the surface to be repaired by hot air jetted by the spray gun nozzle until the surface to be repaired is qualitative.

After finding the best combination of angle scope, distance scope, temperature range, with the spray gun rifle mouth facing to the surface of awaiting repairing, control spray gun output is in 1 ~ 10kW within range to the spray gun rifle mouth can continuously provide near PC material melting point's hot-blast, utilizes the hot-blast characteristic of walking along smooth surface that spray gun rifle mouth erupted, control hot-blast edge mar direction reciprocating motion under hot-blast and product surface tension effect, impels PC material damage surface to form local melting, until changing the whole melting state of the surface of awaiting repairing, makes the mar of the surface of awaiting repairing thoroughly melt along the mar base member and then treats the mar of repairing the surface and restores the surface of damage into the state unanimous with peripheral cambered surface or plane. The repairing time is related to factors such as the depth of the scratches on the surface to be repaired, the size of the scratches and the like, and the single repairing time is generally 3-15 seconds. The best effect is achieved when the output power is 1-10 kW. Wherein the spray size of the spray gun nozzle is set within the range of 3-20 mm.

When the repairing operation is actually carried out, the repairing time of single repairing operation has correlation with the distance between the spray gun and the surface to be repaired, the output power of the spray gun and the temperature interval of the outlet of the spray gun. When the distance between the spray gun and the surface to be repaired is increased, the repair time of single repair operation needs to be correspondingly prolonged; when the lance output power is increased/decreased, the distance between the lance and the surface to be repaired should be increased/decreased appropriately, while the repair time for a single repair operation should be shortened or increased appropriately.

When the surface damage of the PC material cannot be completely repaired by a single repairing operation, the surface of the PC material to be repaired can be repeatedly repaired until the surface damage of the PC material is completely repaired.

After the repair is finished, the gun nozzle of the spray gun is lifted, the distance between the gun nozzle of the spray gun and the surface to be repaired is slowly increased, the temperature of the surface to be repaired is slowly reduced, the surface to be repaired is gradually qualitative, and after the qualitative operation is carried out, cold air is blown into the scratch to be solidified.

According to the hot air leveling and repairing method for the surface damage of the PC material, provided by the invention, the damage to the surface of the PC material is repaired by adopting the hot air jetted by the spray gun nozzle, so that the damage to the health of an operator due to the adoption of modes such as chemical agent coating and the like is avoided; the hot air leveling and repairing method for PC material surface damage provided by the invention is simple to operate, time-saving and labor-saving, and has an obvious effect.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.