CN117984566A - Forming process for reducing poor glue penetration on surface of heat insulation layer of front cabin of automobile - Google Patents
Forming process for reducing poor glue penetration on surface of heat insulation layer of front cabin of automobile Download PDFInfo
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- CN117984566A CN117984566A CN202410094223.2A CN202410094223A CN117984566A CN 117984566 A CN117984566 A CN 117984566A CN 202410094223 A CN202410094223 A CN 202410094223A CN 117984566 A CN117984566 A CN 117984566A
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000009413 insulation Methods 0.000 title claims abstract description 20
- 239000003292 glue Substances 0.000 title claims abstract description 19
- 230000035515 penetration Effects 0.000 title claims abstract description 19
- 239000002994 raw material Substances 0.000 claims abstract description 34
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 31
- 238000003825 pressing Methods 0.000 claims abstract description 26
- 238000000465 moulding Methods 0.000 claims abstract description 15
- 238000005520 cutting process Methods 0.000 claims abstract description 11
- 230000002950 deficient Effects 0.000 claims abstract description 10
- 238000007723 die pressing method Methods 0.000 claims abstract description 8
- 238000005096 rolling process Methods 0.000 claims abstract description 8
- 238000007731 hot pressing Methods 0.000 claims abstract description 7
- 238000001514 detection method Methods 0.000 claims description 27
- 238000001816 cooling Methods 0.000 claims description 15
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 12
- 239000005011 phenolic resin Substances 0.000 claims description 12
- 229920001568 phenolic resin Polymers 0.000 claims description 12
- 230000007547 defect Effects 0.000 claims description 3
- 238000003892 spreading Methods 0.000 claims description 3
- 238000009740 moulding (composite fabrication) Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 230000000712 assembly Effects 0.000 description 5
- 238000000429 assembly Methods 0.000 description 5
- 238000007599 discharging Methods 0.000 description 4
- 238000005485 electric heating Methods 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 238000009987 spinning Methods 0.000 description 4
- 238000004080 punching Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/10—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/82—Testing the joint
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/03—After-treatments in the joint area
- B29C66/032—Mechanical after-treatments
- B29C66/0326—Cutting, e.g. by using waterjets, or perforating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/45—Joining of substantially the whole surface of the articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/58—Upholstery or cushions, e.g. vehicle upholstery or interior padding
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The invention discloses a molding process for reducing the poor glue penetration on the surface of an automobile front cabin heat insulation layer, which relates to the technical field of automobile interior trim parts and comprises the following steps: firstly, feeding and guiding a semi-polymerized felt layer I, a semi-polymerized felt layer II and a non-woven fabric layer simultaneously through a pre-pressing mechanism; rolling the semi-polymerized felt layer I, the semi-polymerized felt layer II and the non-woven fabric layer to combine the three to form a raw material piece; feeding the raw material piece into hot-pressing die-cutting equipment, and performing die-pressing die-cutting forming to obtain a finished product piece; the finished product piece is guided by a blanking mechanism and is cooled in the guiding process; detecting the cooled finished product, and picking out and removing defective products; according to the invention, on the premise of not changing the overall hardness and heat insulation performance of the product, the product hierarchical structure and the raw material proportion are adjusted, so that the surface glue penetration defective rate of the product is reduced; the pre-pressing mechanism is used for carrying out pre-pressing combination operation on the raw material pieces, so that the raw material pieces are prevented from shifting in the subsequent processing process of each layer, and the quality of products is improved.
Description
Technical Field
The invention relates to the technical field of automotive upholsteries, in particular to a molding process for reducing poor glue penetration on the surface of an automotive front cabin heat insulation layer.
Background
The original soft interior decoration sound-proof and heat-proof (semi-polymerized felt + non-woven fabrics) product of the automobile just like a front cabin heat-proof layer, the raw material semi-polymerized felt is produced by mixing phenolic resin with fiber raw materials in a certain proportion at a certain stage in the production process, and then spinning, lapping, hot pressing and other procedures are carried out.
During the spinning process, the phenolic resin is mixed with the fiber raw material to form a spinning solution, and then the spinning solution is sprayed out through a spinneret plate to form the fiber. During the hot pressing process, the phenolic resin can undergo a crosslinking reaction with the fibers to form a semi-polymeric mat having a certain structure and properties.
Because of uneven spraying of phenolic resin (accounting for 30% of the proportion of the raw material semi-polymeric felt for product shaping), poor quality of transparent hard blocks easily occurs on the surface part of the product during die-pressing (hot die) punching and forming, and the poor proportion is larger, so that the manufacturing cost is higher.
Disclosure of Invention
The invention aims to provide a molding process for reducing the poor glue penetration of the surface of an automobile front cabin heat insulation layer, so as to solve the quality problem that the poor glue penetration hard block is likely to occur on the surface part of the product in the prior art in the background art.
In order to achieve the above purpose, the present invention provides the following technical solutions:
A molding process for reducing the poor glue penetration on the surface of an automobile front cabin heat insulation layer comprises the following steps:
Step one: feeding and guiding the semi-polymerized felt layer I, the semi-polymerized felt layer II and the non-woven fabric layer simultaneously through a pre-pressing mechanism;
step two: rolling the semi-polymerized felt layer I, the semi-polymerized felt layer II and the non-woven fabric layer to combine the three to form a raw material piece;
step three: feeding the raw material piece into hot-pressing die-cutting equipment, and performing die-pressing die-cutting forming to obtain a finished product piece;
step four: the finished product piece is guided by a blanking mechanism and is cooled in the guiding process;
step five: and detecting the cooled finished product, and picking out and removing defective products.
The proportion of the semi-polymerized felt layer I phenolic resin is 35%, and the proportion of the semi-polymerized felt layer II phenolic resin is 25%.
As a further scheme of the invention: in the third step, the die-pressing, punching and forming operation sequentially comprises the following steps: spreading, pressing down a die, hovering and baking the die, exhausting and maintaining pressure, maintaining pressure secondarily, decompressing and returning the die, and taking out a finished product.
As a further scheme of the invention: in the hovering and baking operation of the die, the baking temperature is 230-250 ℃, the baking time is 20-30S, and the hovering height is 3-6 mm.
As a further scheme of the invention: in the exhausting and pressure maintaining stage, the pressure maintaining time is 20S-30S, and the pressure maintaining pressure is 80T-150T; in the secondary pressure maintaining stage, the pressure maintaining time is 25S-30S, and the pressure maintaining pressure is 150T-210T.
As a further scheme of the invention: when the prepressing mechanism guides the semi-polymerized felt layer I, the semi-polymerized felt layer II and the non-woven fabric layer, the semi-polymerized felt layer I, the semi-polymerized felt layer II and the non-woven fabric layer are vertically and parallelly arranged, the semi-polymerized felt layer I and the non-woven fabric layer are guided to the semi-polymerized felt layer II, and then the semi-polymerized felt layer I, the semi-polymerized felt layer II and the non-woven fabric layer are rolled by a pressing rotary roller to form a raw material piece.
As a further scheme of the invention: before rolling and combining, the vibration assembly vibrates and levels the semi-polymerized felt layer and the non-woven fabric layer, so that air is prevented from being pressed into the raw material piece, and the quality of the raw material piece is improved.
As a further scheme of the invention: the pre-pressing mechanism comprises a base station, the top of the base station is fixedly connected with a guide frame, two side guide assemblies which are arranged up and down are symmetrically arranged on the inner wall of the guide frame, and a middle guide assembly for guiding a semi-polymerized felt layer II is arranged in the middle of the inner wall of the guide frame;
the side guide assembly comprises a feeding guide roller, one side of the feeding guide roller is provided with a direction-adjusting guide roller, one side of the direction-adjusting guide roller is provided with a pressing rotating roller, a vibration assembly is arranged between the direction-adjusting guide roller and the pressing rotating roller, the vibration assembly comprises a driving motor, the output end of the driving motor is fixedly connected with an adjusting turntable, one side of the adjusting turntable is fixedly connected with a vibrating plate, and the vibrating plate is internally and fixedly provided with a vibrating motor; the middle guide assembly comprises a guide frame, and a plurality of guide rotating rollers are rotatably connected to two sides of the inner wall of the guide frame;
one end of the guide frame is provided with a feed chute for feeding the raw material pieces out;
two symmetrically arranged air supply assemblies are fixedly arranged on one side, close to the feeding groove, of the inner wall of the material guide frame, each air supply assembly comprises an air supply frame, an air supply fan is fixedly arranged on the inner wall of the air supply frame, and an electric heating net is arranged on one side of the air supply fan.
As a further scheme of the invention: in the fourth step, the blanking mechanism performs blanking and guiding operation on the finished product through the guiding and conveying groove, guides and conveys the finished product in a vertical posture through the guiding and conveying belts arranged on two sides of the guiding and conveying groove, and supplies air to the finished product in the guiding and conveying process, so that cooling of the finished product is realized.
As a further scheme of the invention: in the fifth step, the discharging mechanism places and receives the finished product piece after cooling through the detection frame, and the surface of the finished product piece is detected by manually overturning the detection frame.
As a further scheme of the invention: the blanking mechanism comprises a guide groove, support brackets are fixedly connected to two sides of the inner wall of the guide groove, a guide conveying belt is rotatably arranged at the top of one side of one support bracket and at the bottom of one side of the other support bracket, a cold air port is formed in the top of one support bracket and in the middle of one side of the other support bracket, cooling fans are fixedly arranged on the inner walls of the two support brackets, and the cooling fans are correspondingly arranged with the cold air port;
The inner wall one end of guide groove is provided with the detection component, the detection component includes the detection frame of being connected with guide groove inner wall rotation, the below of detection frame is provided with ejection of compact conveyer belt, one side fixedly connected with mounting bracket of guide groove top, the middle part fixed mounting of mounting bracket has the detection lamp. The detection lamp is correspondingly arranged above the detection frame.
Compared with the prior art, the application has the beneficial effects that: the application reduces the surface glue penetration defective rate of the product by adjusting the hierarchical structure and the raw material proportion of the product and utilizing a multilayer laying method on the premise of not changing the overall hardness and the heat insulation performance of the product; because the improved heat insulation pad is divided into three layers, in order to improve the combination stability of the middle layer and the two layers on the outer side, the pre-pressing mechanism performs pre-pressing combination operation on the heat insulation pad, so that raw material pieces are prevented from shifting in the processes of traction, transfer and subsequent processing, and the semi-polymerized felt layer and the non-woven fabric layer are subjected to vibration flattening before rolling combination through the vibration assembly, so that air is prevented from being pressed into the raw material pieces, and the quality of the raw material pieces is improved;
According to the application, the blanking mechanism is arranged, the finished product piece is guided and conveyed in a vertical posture through the guide conveying belts arranged at the two sides of the guide conveying groove, and air is supplied to the finished product piece in the guide conveying process, so that the finished product piece is cooled; the finished product piece subjected to cooling is placed and received through the detection frame, and the surface of the finished product piece is detected in a mode of manually overturning the detection frame, so that defective products are picked out and taken out, and the quality of the finished product is ensured.
Drawings
FIG. 1 is a flow chart of the process of the present invention;
FIG. 2 is a cross-sectional view of a finished article of the present invention;
FIG. 3 is a perspective view of the pre-compression mechanism of the present invention;
FIG. 4 is a cross-sectional view of the precompression mechanism of the present invention;
fig. 5 is a perspective view of the blanking mechanism of the present invention.
In the figure: 1. semi-polymeric felt layer one; 2. semi-polymeric felt layer two; 3. a non-woven fabric layer; 401. a base station; 402. a guide frame; 403. a feed guide roller; 404. a direction-adjusting guide roller; 405. a vibration plate; 406. pressing and rotating the roller; 407. a feed chute; 408. a guide frame; 409. guiding the rotating roller; 410. an air supply frame; 501. a guide groove; 502. a support bracket; 503. a material guiding conveyer belt; 504. a cold air port; 505. a discharge conveyor belt; 506. a detection frame; 507. a mounting frame; 508. the lamp is detected.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-2, in an embodiment of the invention, a molding process for reducing a glue penetration defect on a surface of a heat insulation layer of a front cabin of an automobile includes the following steps:
Step one: feeding and guiding the semi-polymerized felt layer 1, the semi-polymerized felt layer 2 and the non-woven fabric layer 3 through a pre-pressing mechanism at the same time;
Step two: rolling the semi-polymerized felt layer 1, the semi-polymerized felt layer 2 and the non-woven fabric layer 3 to combine the three to form a raw material piece;
step three: feeding the raw material piece into hot-pressing die-cutting equipment, and performing die-pressing die-cutting forming to obtain a finished product piece;
step four: the finished product piece is guided by a blanking mechanism and is cooled in the guiding process;
step five: and detecting the cooled finished product, and picking out and removing defective products.
In the third step, the die-pressing, punching and forming operation sequentially comprises the following steps: spreading, pressing down a die, hovering and baking the die, exhausting and maintaining pressure, maintaining pressure secondarily, decompressing and returning the die, and taking out a finished product; in the hovering and baking operation of the die, the baking temperature is 230-250 ℃, the baking time is 20-30S, and the hovering height is 3-6 mm; in the exhausting and pressure maintaining stage, the pressure maintaining time is 20S-30S, and the pressure maintaining pressure is 80T-150T; in the secondary pressure maintaining stage, the pressure maintaining time is 25S-30S, and the pressure maintaining pressure is 150T-210T.
According to the application, the proportion of phenolic resin in the semi-polymerized felt layer I1 is 35%, the proportion of phenolic resin in the semi-polymerized felt layer II 2 is 25%, the proportion of phenolic resin in the semi-polymerized felt layer II 2 in the middle is reduced from common 30% to 25% by dividing only one semi-polymerized felt layer in the prior art into two layers and changing the proportion of phenolic resin to 35%, so that the surface (the outer side of a non-woven fabric layer) of a finished product reduces the generation of a glue-penetrating hard block, and the surface attractiveness is improved; referring to fig. 3, the pre-pressing mechanism includes a base 401, a guide frame 402 is fixedly connected to the top of the base 401, two side guide assemblies arranged up and down are symmetrically arranged on the inner wall of the guide frame 402, and a middle guide assembly for guiding a semi-polymeric felt layer two 2 is arranged in the middle of the inner wall of the guide frame 402; when the prepressing mechanism guides the semi-polymerized felt layer 1, the semi-polymerized felt layer 2 and the non-woven fabric layer 3, the semi-polymerized felt layer 1 and the non-woven fabric layer 3 are vertically and parallelly arranged, referring to fig. 4, and then the semi-polymerized felt layer 1 and the non-woven fabric layer 3 are guided towards the semi-polymerized felt layer 2, and then the semi-polymerized felt layer 1, the semi-polymerized felt layer 2 and the non-woven fabric layer 3 are rolled by a pressing rotary roller 406 to form a raw material piece;
The side guide assembly comprises a feeding guide roller 403, a direction-adjusting guide roller 404 is arranged on one side of the feeding guide roller 403, a pressing rotary roller 406 is arranged on one side of the direction-adjusting guide roller 404, a vibration assembly is arranged between the direction-adjusting guide roller 404 and the pressing rotary roller 406, the vibration assembly comprises a driving motor, the output end of the driving motor is fixedly connected with an adjusting turntable, one side of the adjusting turntable is fixedly connected with a vibration plate 405, the vibration motor is fixedly arranged in the vibration plate 405, and the bottom of the vibration plate 405 is an arc surface; before rolling and combining, the vibration assembly vibrates and levels the semi-polymerized felt layer and the non-woven fabric layer 3, so that air is prevented from being pressed into the raw material piece, and the quality of the raw material piece is improved; the middle guide component comprises a guide frame 408, and a plurality of guide rotating rollers 409 are rotatably connected to both sides of the inner wall of the guide frame 408;
A feeding groove 407 for feeding the raw material is formed in one end of the guide frame 402, and arc-shaped protruding blocks are arranged on two sides of the inner wall of the feeding groove 407, so that resistance of the raw material passing through is reduced; two symmetrically arranged air supply assemblies are fixedly arranged on one side, close to the feeding groove 407, of the inner wall of the material guide frame, each air supply assembly comprises an air supply frame 410, an air supply fan is fixedly arranged on the inner wall of each air supply frame 410, an electric heating net is arranged on one side of each air supply fan, and hot air is supplied to the combining position of the semi-polymerized felt layer and the non-woven fabric layer 3 through the cooperation of the air supply fan and the electric heating net by arranging the air supply assemblies, so that the temperature is raised, and compression combination between each assembly structure is facilitated.
Referring to fig. 5, the blanking mechanism includes a guiding groove 501, two sides of an inner wall of the guiding groove 501 are fixedly connected with supporting brackets 502, a guiding conveyer belt 503 is rotatably installed at a top of one side of one supporting bracket 502 and a bottom of one side of the other supporting bracket 502, a cooling air port 504 is formed at a top of one supporting bracket 502 and a middle of one side of the other supporting bracket 502, cooling fans are fixedly installed at inner walls of the two supporting brackets 502, and the cooling fans are correspondingly arranged with the cooling air port 504; the blanking mechanism performs blanking and guiding operation on the finished product through the guiding and conveying groove 501, guides the finished product in a vertical posture through guiding and conveying belts 503 arranged on two sides of the guiding and conveying groove 501, and supplies air to the finished product in the guiding and conveying process so as to realize cooling of the finished product;
One end of the inner wall of the guide groove 501 is provided with a detection component, the detection component comprises a detection frame 506 rotationally connected with the inner wall of the guide groove 501, a discharging conveyer belt 505 is arranged below the detection frame 506, one side of the top of the guide groove 501 is fixedly connected with a mounting frame 507, the middle part of the mounting frame 507 is fixedly provided with a detection lamp 508, and the detection lamp 508 is correspondingly arranged above the detection frame 506; through detection frame 506, place and accept the finished product spare of accomplishing the cooling to detect finished product spare surface by the mode of artifical upset detection frame 506, pick out the defective products and take out with this, pass through ejection of compact conveyer belt 505 with the good products.
The working principle of the invention is as follows: firstly, arranging the three materials vertically in parallel, and feeding the materials into a pre-pressing mechanism, as shown in fig. 3, feeding a semi-polymerized felt layer 1 and a non-woven fabric layer 3 respectively by two side guide components, namely, bypassing above a feeding guide roller 403, bypassing below a steering roller, then feeding the semi-polymerized felt layer 2 into a pressing roller 406 after passing through a vibration component, feeding the semi-polymerized felt layer 2 by a middle guide component, namely, feeding the semi-polymerized felt layer into one end of a guide frame 408, feeding the semi-polymerized felt layer 2 between a plurality of guide rollers 409, and feeding the semi-polymerized felt layer 2 out of the other end of the guide frame 408 into the pressing roller 406;
Before the semi-polymeric felt layer 1 and the semi-polymeric felt layer 1 are combined with the non-woven fabric layer 3, a vibration motor is started to drive the vibration plate 405 to vibrate, and the combination position is leveled, so that cavitation and uneven combination points are avoided, and the quality of raw material pieces is improved; simultaneously, the two fans and the electric heating net are started, and hot air is blown to the semi-polymeric felt layer 1 and the semi-polymeric felt layer 1 to heat the semi-polymeric felt layer 1, so that the bonding compactness between the layers is improved; the semi-polymerized felt layer 1, the semi-polymerized felt layer 1 and the non-woven fabric layer 3 are pressed and combined by the rotation of the pressing rotary roller 406 to obtain raw material pieces, and then the raw material pieces are sent out by the feeding groove 407;
Feeding the raw material piece into hot-pressing die-cutting equipment by a manual or external material moving mechanism, and carrying out die-pressing die-cutting forming to obtain a finished product piece; taking out the finished product, placing the finished product into a guide groove in an inclined posture, referring to fig. 5, rotating the finished product by two guide conveying belts 503, discharging and conveying the finished product, starting a cooling fan in the conveying process, and sending the finished product out by a cooling air inlet 504 to cool the finished product;
when moving the finished product piece to the position of the detection frame 506, the operator takes the finished product piece and places the finished product piece on the detection frame 506, the detection lamp 508 is started to provide illumination, the operator detects the quality of the finished product by manpower, the defective products are sorted and picked out, and the detection frame 506 is turned over for the defective products and is carried out by the discharging conveying belt 505.
The present invention is not limited to the above embodiments, but is capable of modification and variation in all aspects, including those of ordinary skill in the art, without departing from the spirit and scope of the present invention.
Claims (9)
1. A molding process for reducing the poor glue penetration on the surface of an automobile front cabin heat insulation layer is characterized by comprising the following steps:
Step one: feeding and guiding the semi-polymerized felt layer I (1), the semi-polymerized felt layer II (2) and the non-woven fabric layer (3) simultaneously through a pre-pressing mechanism;
step two: rolling the semi-polymerized felt layer I (1), the semi-polymerized felt layer II (2) and the non-woven fabric layer (3) to combine the three to form a raw material piece;
step three: feeding the raw material piece into hot-pressing die-cutting equipment, and performing die-pressing die-cutting forming to obtain a finished product piece;
step four: the finished product piece is guided by a blanking mechanism and is cooled in the guiding process;
step five: and detecting the cooled finished product, and removing defective products.
2. The molding process for reducing the surface glue penetration defect of the heat insulation layer of the front cabin of the automobile according to claim 1, wherein the proportion of phenolic resin of the semi-polymerized felt layer I (1) is 35%, and the proportion of phenolic resin of the semi-polymerized felt layer II (2) is 25%.
3. The molding process for reducing the poor glue penetration on the surface of the heat insulation layer of the front cabin of the automobile according to claim 1, wherein when the prepressing mechanism guides the semi-polymerized felt layer I (1), the semi-polymerized felt layer II (2) and the non-woven fabric layer (3), the semi-polymerized felt layer I (1) and the non-woven fabric layer (3) are vertically and parallelly arranged, and then the semi-polymerized felt layer I (1) and the non-woven fabric layer (3) are guided to the semi-polymerized felt layer II (2) direction, and then the semi-polymerized felt layer I (1), the semi-polymerized felt layer II (2) and the non-woven fabric layer II (3) are rolled by a pressing rotary roller (406) to form a raw material piece.
4. A molding process for reducing the poor glue penetration on the surface of an automobile front cabin heat insulation layer according to claim 3, wherein the pre-pressing mechanism is used for vibrating and flattening the semi-polymeric felt layer and the non-woven fabric layer (3) before rolling and combining through a vibrating assembly, so that the quality of raw material pieces is improved.
5. The molding process for reducing the poor glue penetration on the surface of the heat insulation layer of the front cabin of the automobile according to claim 1, wherein in the fourth step, the blanking mechanism performs blanking and guiding operation on the finished product through the guiding and conveying groove (501), guides and conveys the finished product in a vertical posture through guiding and conveying belts (503) arranged on two sides of the guiding and conveying groove (501), and supplies air to the finished product in the guiding and conveying process, so as to realize cooling of the finished product.
6. The molding process for reducing the poor glue penetration on the surface of the heat insulation layer of the front cabin of the automobile according to claim 5, wherein the blanking mechanism is used for placing and receiving finished products after cooling through the detection frame (506) and detecting the surface of the finished products by manually overturning the detection frame (506).
7. The molding process for reducing the surface glue penetration failure of the heat insulation layer of the front cabin of the automobile according to claim 1, wherein in the third step, the press-die-cutting molding operation sequentially comprises the following steps: spreading, pressing down a die, hovering and baking the die, exhausting and maintaining pressure, maintaining pressure secondarily, decompressing and returning the die, and taking out a finished product.
8. The molding process for reducing the surface glue penetration defect of the heat insulation layer of the front cabin of the automobile according to claim 7, wherein in the hovering and baking operation of the mold, the baking temperature is 230-250 ℃, the baking time is 20-30S, and the hovering height is 3-6 mm.
9. The molding process for reducing the surface glue penetration failure of the heat insulation layer of the front cabin of the automobile according to claim 7, wherein the pressure maintaining time is 20S-30S and the pressure maintaining pressure is 80T-150T in the exhausting and pressure maintaining stage; in the secondary pressure maintaining stage, the pressure maintaining time is 25S-30S, and the pressure maintaining pressure is 150T-210T.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410094223.2A CN117984566A (en) | 2024-01-23 | 2024-01-23 | Forming process for reducing poor glue penetration on surface of heat insulation layer of front cabin of automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410094223.2A CN117984566A (en) | 2024-01-23 | 2024-01-23 | Forming process for reducing poor glue penetration on surface of heat insulation layer of front cabin of automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117984566A true CN117984566A (en) | 2024-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410094223.2A Pending CN117984566A (en) | 2024-01-23 | 2024-01-23 | Forming process for reducing poor glue penetration on surface of heat insulation layer of front cabin of automobile |
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| Country | Link |
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| CN (1) | CN117984566A (en) |
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