CN114379133A - Instrument panel IMG-F real seam line forming process - Google Patents
Instrument panel IMG-F real seam line forming process Download PDFInfo
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- CN114379133A CN114379133A CN202210094230.3A CN202210094230A CN114379133A CN 114379133 A CN114379133 A CN 114379133A CN 202210094230 A CN202210094230 A CN 202210094230A CN 114379133 A CN114379133 A CN 114379133A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D99/00—Subject matter not provided for in other groups of this subclass
- B29D99/0092—Producing upholstery articles, e.g. cushions, seats
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Abstract
The invention relates to an instrument panel IMG-F real seam line forming process, which comprises the following steps: 1) heating the pre-cut epidermis; 2) adsorbing the surface skin with a vacuum forming mold to form skin lines and a shape, and forming a suture guide groove and a suture groove on the surface of the surface skin; 3) blowing air by a fan to cool the vacuum forming mold and the surface skin, and then entering a demolding procedure; 4) the sewing machine automatically sews according to the thread guide groove and the thread trace groove to form a real thread on the surface; 5) sealing the pinholes at the true seam lines on the surface skin; 6) heating the epidermis to soften the epidermis; 7) attaching the surface skin to the instrument panel framework to form a combined body; 8) and mounting the combined body on a tire membrane for vacuum compounding. The instrument panel IMG-F real seam line forming process can be used for processing real seam lines by adopting basic equipment of the IMG-L process and the same number of dies, and can effectively solve the problem that the real seam lines are difficult to form in the existing instrument panel skin forming process.
Description
Technical Field
The invention belongs to the technical field of instrument panel suture processing, and particularly relates to an instrument panel IMG-F real suture forming process.
Background
The instrument panel belongs to one of automotive interior parts, and along with the increasing requirements of users on the texture of materials and the development of automotive interior molding processes, more and more automotive instrument panels are made of soft materials. For middle and high-grade vehicles, the skin forming of the instrument panel of the interior trim part is an indispensable process; according to different processing modes, the method can be divided into two main categories: the first is the slush molding process, and the second is the IMG process, namely the female die in-mold forming skin texture/coating process.
The slush molding process has the advantages of high production speed, simple process control, good pattern surface consistency and the like, but the investment of the mold in the early stage is large, the mold needs to be continuously cleaned in the processing process, and the auxiliary operation consumes much time. Currently, the IMG process includes an IMG-L process and an IMG-S process; the IMG-L process is characterized in that a skin formed in a die is directly compounded on an instrument panel framework in the die, only a false suture can be formed, namely, only the shape of the suture is formed, the false suture is the same as the original color of the skin, other colors cannot be changed, and the requirements of different customers are difficult to meet; the IMG-S process is to carry out the procedures of sewing, foaming, compounding and the like after the skin is formed, and can form a true sewing line, for example, the IMG-S true sewing line processing process of the Chinese patent CN201810281324.5 automobile instrument panel is basically the same as the flow of the slush molding process, but the mold cost and the processing cost are higher, and the IMG-S process is difficult to be applied to middle and low-grade cars.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an instrument panel IMG-F real seam line forming process, solve the problem that the existing instrument panel skin forming process is difficult to form a real seam line, and achieve the effect of reducing the forming difficulty and the processing cost of the real seam line.
In order to solve the technical problems, the invention adopts the following technical scheme:
an instrument panel IMG-F real seam line forming process comprises the following steps:
1) heating the pre-cut epidermis;
2) adsorbing the surface skin with a vacuum forming mold to form skin lines and a shape, and forming a suture guide groove and a suture groove on the surface of the surface skin;
3) blowing air by a fan to cool the vacuum forming mold and the surface skin, and then entering a demolding procedure;
4) the sewing machine automatically sews according to the thread guide groove and the thread trace groove to form a real thread on the surface;
5) sealing the pinholes at the true seam lines on the surface skin;
6) heating the epidermis to soften the epidermis;
7) attaching the surface skin to the instrument panel framework to form a combined body;
8) mounting the combined body on a tire membrane for vacuum compounding;
9) and (5) demolding to finish the processing.
Further, the skin in the step 1) is made of a TPO + PPF composite material with back bubbles, and the thickness is 2.5 +/-0.05 mm.
Further, the vacuum forming die comprises an upper die and a lower die, wherein the upper die is a nickel shell type surface, and the lower die is an aluminum alloy type surface; step 2) comprises the following substeps:
21) placing the surface skin on the aluminum alloy molded surface of the lower die;
22) the upper die and the lower die move oppositely to extrude the surface skin, so that a suture guide groove and a suture groove are formed on the surface of the surface skin, and the surface skin is clamped in a sealing cavity formed by the edge of the upper die and the lower die;
23) vacuumizing the upper die to adsorb skin lines on the surface;
24) vacuumizing the lower die to adsorb the surface of the skin to form the appearance;
further, the vacuum forming die comprises a die temperature controller, and the die temperature controller keeps the temperature of the upper die and the lower die at 65-80 ℃ when the step 2) is carried out.
Further, in the step 22), when the sealed cavity is formed along the edge of the upper die and the lower die, the distance between the nickel shell molded surface of the upper die and the aluminum alloy molded surface of the lower die is 2.5 +/-0.05 mm.
Further, the vacuum degree of the vacuum pumping in the step 23) and the step 24) is-0.1 +/-0.01 MPa.
Further, step 5) comprises the following sub-steps:
51) obtaining a double-sided adhesive tape with the width of 8-10 mm and the thickness of 0.1 mm;
52) double-sided tape was applied to the skin at the true suture line to seal the needle hole.
Further, the heating treatment in step 6) is: and (3) putting the surface skin into an oven for baking to ensure that the surface skin is uniformly heated and softened at the temperature of 40-50 ℃ for 3-5 minutes.
Further, before the skin is attached to the instrument panel framework to form the combined body in the step 7), glue spraying treatment needs to be carried out on the instrument panel framework.
Further, in the step 7), the instrument panel framework is made of a PP + EPDM-TD20 composite material.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention relates to an instrument panel IMG-F real seam line forming process, which adopts basic equipment of an IMG-L process and moulds with the same quantity, but can be used for manufacturing real seam lines which cannot be processed by the IMG-L process; therefore, the problem that the existing instrument panel skin forming process is difficult to form the true seam line is solved, and the effects of reducing the forming difficulty and the processing cost of the true seam line are achieved.
2. The instrument panel IMG-F true seam line forming process adopts the basic equipment of the IMG-L process and the same number of dies, and is far lower than the IMG-S/slush molding process in cost; meanwhile, the processed real sewing line can completely achieve the effects of IMG-S and slush molding process.
3. According to the IMG-F real seam line forming process for the instrument panel, the skin is made of the TPO + PPF composite material with the back bubbles, the instrument panel framework is made of the PP + EPDM-TD20 composite material, and therefore the processed product is light in weight, the transportation cost can be reduced, and the vehicle load can be reduced.
4. The instrument panel IMG-F real seam line forming process has the advantages of simple process steps, low energy consumption, high production efficiency and low loss to a mold.
Drawings
FIG. 1 is a flow chart of an embodiment of an instrument panel IMG-F true seam line forming process.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Example (b):
referring to fig. 1, an instrument panel IMG-F true seam line forming process includes the following steps:
1) heating the pre-cut epidermis; the skin is made of a TPO + PPF composite material with back bubbles, the thickness is 2.5 +/-0.05 mm, and the thickness of the skin can be 2.45 mm, 2.5mm or 2.55mm during implementation; in the IMG-S process, the skin is made of TPO material without back bubbles, and the thickness is 0.7 +/-0.05 mm.
2) Adsorbing the surface skin with a vacuum forming mold to form skin lines and a shape, and forming a suture guide groove and a suture groove on the surface of the surface skin; the vacuum forming die comprises an upper die, a lower die and a die temperature controller, wherein the upper die is a nickel shell type surface, the lower die is an aluminum alloy type surface, the die temperature controller keeps the temperature of the upper die and the lower die at 65-80 ℃, and during implementation, the die temperature controller keeps the temperature of the upper die and the lower die at 65 ℃, 70 ℃ and 80 ℃; step 2) comprises the following substeps:
21) placing the surface skin on the aluminum alloy molded surface of the lower die;
22) the upper die and the lower die move oppositely to extrude the surface skin, so that a suture guide groove and a suture groove are formed on the surface of the surface skin, and the surface skin is clamped in a sealing cavity formed by the edge of the upper die and the lower die; in the embodiment, when the edges of the upper die and the lower die form the sealing cavity, the distance between the nickel shell molded surface of the upper die and the aluminum alloy molded surface of the lower die is 2.5 +/-0.05 mm; when the method is implemented, the distance between the nickel shell molded surface of the upper die and the aluminum alloy molded surface of the lower die can be 2.45 mm, 2.5mm or 2.55 mm;
in the IMG-L process, the distance between the nickel shell molded surface of the upper die and the aluminum alloy molded surface of the lower die is generally 5.5 +/-0.05 mm, and in the IMG-S process, the distance between the nickel shell molded surface of the upper die and the aluminum alloy molded surface of the lower die is generally 0.7 +/-0.05 mm.
23) Vacuumizing the upper die to adsorb skin lines on the surface, wherein the vacuum degree of vacuumizing is-0.1 +/-0.01 MPa; when in implementation, the vacuum degree of the vacuum pumping can be-0.11 Mpa, -0.1 Mpa or-0.09 Mpa;
24) vacuumizing the lower die to enable the surface to be adsorbed to form the shape, wherein the vacuum degree of vacuumizing is-0.1 +/-0.01 MPa; when in use, the vacuum degree of the vacuum pumping can be-0.11 Mpa, -0.1 Mpa or-0.09 Mpa.
3) And (4) blowing air by a fan to cool the vacuum forming die and the surface skin, and then entering a demoulding procedure.
4) The sewing machine automatically sews according to the thread guide groove and the thread trace groove to form a real thread on the surface; in this embodiment, the suture is made of nylon bund thread.
5) Sealing the pinholes at the true seam lines on the surface skin; in the embodiment, double-sided adhesive tape with the width of 8-10 mm and the thickness of 0.1mm is attached to the position of a real seam line on the surface of the skin to seal the pinhole;
the step is the specific process step of the IMG-F real seam line forming process of the instrument panel, can avoid poor compounding caused by air leakage during vacuum compounding, can improve the compounding quality and avoid repeated compound processing.
6) Heating the epidermis to soften the epidermis; in the embodiment, the heat treatment of the surface skin adopts an oven, namely the surface skin is put into the oven to be baked, so that the surface skin is uniformly heated and softened at the temperature of 40-50 ℃ for 3-5 minutes; in practice, the oven temperature may be 40 ℃, 45 ℃ or 50 ℃ and the baking time may be 3 minutes, 4 minutes or 5 minutes.
The step is a special process step of the instrument panel IMG-F real seam line forming process, the surface skin is uniformly heated and softened, so that the surface skin is conveniently attached to the instrument panel framework, and meanwhile, the heating of a combined body during vacuum compounding can be eliminated, so that the process step is simpler.
7) Attaching the surface skin to the instrument panel framework to form a combined body; before the skin is attached to the instrument panel framework to form a combined body, glue spraying treatment needs to be carried out on the instrument panel framework; in the embodiment, the instrument panel framework is made of a PP + EPDM-TD20 composite material;
the step is a special process step of the instrument panel IMG-F real seam line forming process, and the instrument panel framework is already put in the step 2) in the IMG-L process.
8) Mounting the combined body on a tire membrane for vacuum compounding;
9) and (5) demolding to finish the processing.
The invention relates to an instrument panel IMG-F real seam line forming process, which adopts basic equipment of an IMG-L process and moulds with the same quantity, but can be used for manufacturing real seam lines which cannot be processed by the IMG-L process; therefore, the problem that the existing instrument panel skin forming process is difficult to form the true seam line is solved, and the effects of reducing the forming difficulty and the processing cost of the true seam line are achieved.
In the instrument panel IMG-F real seam line forming process, after a real seam line is formed on the surface, the key for vacuum compounding in the follow-up process is to seal a pinhole by sticking a double-sided adhesive tape; compared with the traditional process, the method has the following advantages:
1. adopting basic equipment of an IMG-L process and moulds with the same quantity, but making a true seam line which cannot be processed by the IMG-L process;
2. the cost is far lower than that of IMG-S and slush molding process; the production efficiency is high and is about 6 times of that of a slush molding process;
3. the service life of the mould is long, about 40 ten thousand moulds, which is 20 times of that of the slush molding process;
4. the processed product has light weight, and only 70% of the weight of the product processed by the slush molding process.
5. The use energy consumption is low, and only 1/15 which is the energy consumed by the slush molding process is needed.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (10)
1. An instrument panel IMG-F real seam line forming process is characterized in that: the method comprises the following steps:
1) heating the pre-cut epidermis;
2) adsorbing the surface skin with a vacuum forming mold to form skin lines and a shape, and forming a suture guide groove and a suture groove on the surface of the surface skin;
3) blowing air by a fan to cool the vacuum forming mold and the surface skin, and then entering a demolding procedure;
4) the sewing machine automatically sews according to the thread guide groove and the thread trace groove to form a real thread on the surface;
5) sealing the pinholes at the true seam lines on the surface skin;
6) heating the epidermis to soften the epidermis;
7) attaching the surface skin to the instrument panel framework to form a combined body;
8) mounting the combined body on a tire membrane for vacuum compounding;
9) and (5) demolding to finish the processing.
2. The IMG-F real seam line forming process for the instrument panel as claimed in claim 1, wherein: the skin in the step 1) is made of a TPO + PPF composite material with back bubbles, and the thickness is 2.5 +/-0.05 mm.
3. The IMG-F real seam line forming process for the instrument panel as claimed in claim 1, wherein: the vacuum forming die comprises an upper die and a lower die, wherein the upper die is a nickel shell type surface, and the lower die is an aluminum alloy type surface; step 2) comprises the following substeps:
21) placing the surface skin on the aluminum alloy molded surface of the lower die;
22) the upper die and the lower die move oppositely to extrude the surface skin, so that a suture guide groove and a suture groove are formed on the surface of the surface skin, and the surface skin is clamped in a sealing cavity formed by the edge of the upper die and the lower die;
23) vacuumizing the upper die to adsorb skin lines on the surface;
24) the lower die is vacuumized to absorb the surface of the skin to form the appearance.
4. The IMG-F real seam line forming process for the instrument panel as claimed in claim 3, wherein: the vacuum forming die comprises a die temperature controller, and the die temperature controller keeps the temperature of the upper die and the lower die at 65-80 ℃ when the step 2) is carried out.
5. The IMG-F real seam line forming process for the instrument panel as claimed in claim 3, wherein: and step 22), when the edges of the upper die and the lower die form a sealed cavity, the distance between the nickel shell molded surface of the upper die and the aluminum alloy molded surface of the lower die is 2.5 +/-0.05 mm.
6. The IMG-F real seam line forming process for the instrument panel as claimed in claim 3, wherein: the vacuum degree of the vacuum pumping in the step 23) and the step 24) is-0.1 +/-0.01 MPa.
7. The IMG-F real seam line forming process for the instrument panel as claimed in claim 1, wherein: step 5) comprises the following substeps:
51) obtaining a double-sided adhesive tape with the width of 8-10 mm and the thickness of 0.1 mm;
52) double-sided tape was applied to the skin at the true suture line to seal the needle hole.
8. The IMG-F real seam line forming process for the instrument panel as claimed in claim 1, wherein: the heating treatment in the step 6) comprises the following steps: and (3) putting the surface skin into an oven for baking to ensure that the surface skin is uniformly heated and softened at the temperature of 40-50 ℃ for 3-5 minutes.
9. The IMG-F real seam line forming process for the instrument panel as claimed in claim 1, wherein: and 7) before the surface skin is attached to the instrument panel framework to form a combined body, glue spraying treatment needs to be carried out on the instrument panel framework.
10. The IMG-F real seam line forming process for the instrument panel as claimed in claim 1, wherein: in the step 7), the instrument panel framework is made of a PP + EPDM-TD20 composite material.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210094230.3A CN114379133A (en) | 2022-01-26 | 2022-01-26 | Instrument panel IMG-F real seam line forming process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210094230.3A CN114379133A (en) | 2022-01-26 | 2022-01-26 | Instrument panel IMG-F real seam line forming process |
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| CN202210094230.3A Pending CN114379133A (en) | 2022-01-26 | 2022-01-26 | Instrument panel IMG-F real seam line forming process |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108454068A (en) * | 2018-04-02 | 2018-08-28 | 辽宁金兴汽车内饰有限公司 | The true suture processing technologys of fascia IMG-S |
| CN108527881A (en) * | 2018-04-25 | 2018-09-14 | 全兴工装设备（南京）有限公司 | A kind of vacuum abutted processing technology with moccasin and thread automotive upholstery |
| CN110303690A (en) * | 2019-06-25 | 2019-10-08 | 浙江吉利汽车研究院有限公司 | A kind of slush moulding processing method of the instrument panel surfaces of the true suture of band |
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2022
- 2022-01-26 CN CN202210094230.3A patent/CN114379133A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108454068A (en) * | 2018-04-02 | 2018-08-28 | 辽宁金兴汽车内饰有限公司 | The true suture processing technologys of fascia IMG-S |
| CN108527881A (en) * | 2018-04-25 | 2018-09-14 | 全兴工装设备（南京）有限公司 | A kind of vacuum abutted processing technology with moccasin and thread automotive upholstery |
| CN110303690A (en) * | 2019-06-25 | 2019-10-08 | 浙江吉利汽车研究院有限公司 | A kind of slush moulding processing method of the instrument panel surfaces of the true suture of band |
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