CN111152472B - Preparation method and preparation device of ambulance interior trimming panel - Google Patents

Preparation method and preparation device of ambulance interior trimming panel Download PDF

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Publication number
CN111152472B
CN111152472B CN202010016923.1A CN202010016923A CN111152472B CN 111152472 B CN111152472 B CN 111152472B CN 202010016923 A CN202010016923 A CN 202010016923A CN 111152472 B CN111152472 B CN 111152472B
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plate blank
air
material layer
groove
plate
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CN111152472A (en
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赵洪照
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Ningbo Careful Special Cars Co ltd
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Ningbo Careful Special Cars Co ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C69/00Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
    • B29C69/001Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore a shaping technique combined with cutting, e.g. in parts or slices combined with rearranging and joining the cut parts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C37/00Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
    • B29C37/02Deburring or deflashing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001Combinations of extrusion moulding with other shaping operations
    • B29C48/0017Combinations of extrusion moulding with other shaping operations combined with blow-moulding or thermoforming
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001Combinations of extrusion moulding with other shaping operations
    • B29C48/0022Combinations of extrusion moulding with other shaping operations combined with cutting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07Flat, e.g. panels
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/10Forming by pressure difference, e.g. vacuum
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/14Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor using multilayered preforms or sheets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26Component parts, details or accessories; Auxiliary operations
    • B29C51/30Moulds
    • B29C51/36Moulds specially adapted for vacuum forming, Manufacture thereof
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26Component parts, details or accessories; Auxiliary operations
    • B29C51/42Heating or cooling
    • B29C51/421Heating or cooling of preforms, specially adapted for thermoforming
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26Component parts, details or accessories; Auxiliary operations
    • B29C51/42Heating or cooling
    • B29C51/421Heating or cooling of preforms, specially adapted for thermoforming
    • B29C51/424Heating or cooling of preforms, specially adapted for thermoforming using a heated fluid
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26Component parts, details or accessories; Auxiliary operations
    • B29C51/42Heating or cooling
    • B29C51/427Cooling of the material with a fluid blast
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26Component parts, details or accessories; Auxiliary operations
    • B29C51/46Measuring, controlling or regulating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2007/00Flat articles, e.g. films or sheets
    • B29L2007/002Panels; Plates; Sheets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2009/00Layered products

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

The invention discloses a preparation method of an ambulance interior trimming panel, aiming at providing a preparation method of an ambulance interior trimming panel with low production cost, long service life and high strength, and the technical scheme is as follows: a PMMA material layer is added on the basis of a common ABS material layer, a melting layer between the ABS material layer and the PMMA material layer is kept in a better softening state through hot air treatment, and meanwhile, the PMMA material layer is connected with the ABS material layer more tightly through the pushing and extruding action of wind pressure. The invention also relates to a preparation device of the ambulance interior trim panel, wherein the cover plate is arranged above the mold frame, and the ventilation pipeline and the first air port are arranged on the cover plate, so that hot air or cold air can enter and pass through the cover plate to be in contact with the plate blank on the upper surface of the mold frame. And the arrangement of the second air port enables hot air or cold air to be alternately discharged, thereby improving the production efficiency.

Description

Preparation method and preparation device of ambulance interior trimming panel
Technical Field
The invention relates to the technical field of automobile accessories, in particular to a preparation method of an ambulance interior trimming panel and a preparation device of the ambulance interior trimming panel.
Background
The ambulance is formed by refitting on the basis of a common passenger car, and the interior decoration of the ambulance is applied in two modes, wherein one mode is the interior decoration of the original passenger car, and the other mode is to replace the interior decoration made of ABS material or composite glass fiber reinforced plastic. The original interior trim of the passenger car has the defects of water resistance, easy aging and bacterium breeding in the application process due to the cloth components, and is not suitable for modern rescue, so the interior trim made of ABS material or composite glass fiber reinforced plastic is generally adopted at present.
However, the composite glass fiber reinforced plastic has high requirements on the quality of the mold due to the process characteristics, and particularly when the size is large, the mold cost is hard to bear. In addition, at present, no mature measure for treating and recycling the glass fiber reinforced plastics exists in China, and the interior trim cannot be recycled after being scrapped. The ambulance has 1 ten thousand annual output in China at present, the abandonment age is 8 years, each ambulance is calculated according to the dosage of 300KG, and 300 tons of glass fiber reinforced plastic fixed wastes are generated each year. The ABS material has the advantages of simple production process, convenient processing and recovery, high strength and impact resistance, and is widely applied, but the ABS material has poor melting resistance, is easy to corrode and crack, has poor heat resistance, is easy to change color and become brittle under the action of sunlight, has short service life, and needs to be replaced frequently.
Disclosure of Invention
The invention aims to solve the problems that the cost of raw materials is higher when the interior trimming panel of the ambulance in the prior art adopts composite glass fiber reinforced plastics, and the service life is shorter when ABS material is adopted.
The technical scheme of the invention is to provide a preparation method of an ambulance interior trimming panel, which specifically comprises the following steps:
s1, obtaining a plate blank by adopting a double-layer co-extrusion process, wherein the upper surface of the plate blank is a PMMA material layer, and the lower surface of the plate blank is an ABS material layer;
s2, cutting the plate blank to a corresponding size according to the requirement, fixing the plate blank on a clamp, and heating to a softening state;
s3, moving the plate above the mold frame, and enabling the edge of the plate to be attached to the edge of the mold frame, so that a sealed environment is formed between the plate and the mold frame;
s4, starting the air pump to enable negative pressure to be formed between the plate blank and the die frame, and carrying out plastic suction molding on the plate blank due to softening;
s5, carrying out hot air treatment on the upper surface of the plate blank for 1-2 minutes, wherein the temperature of the hot air is 110-180 ℃;
s6, performing cold air treatment on the plate blank to obtain a finished product;
and S7, demolding the formed plate and trimming the waste edges.
Further, the thickness of PMMA material layer is 0.4 ~ 0.8mm, the thickness of ABS material layer is 4 ~ 6mm to under the prerequisite of guaranteeing panel blank intensity, more be favorable to subsequent plastic uptake shaping.
Preferably, the heating temperature of the step S2 is 120-180 ℃, and the softening time is 10-20 minutes, so that the plate blank is sufficiently softened.
Preferably, the hot air in the hot air treatment in step S4 is blown from the outer edge of the plate blank to the middle, and since the outer edge of the plate blank is cooled first, the hot air firstly contacts the outer edge of the plate blank for heat exchange, and then is blown to the middle of the plate blank, so that the temperature of the whole plate blank is more balanced and stable.
Preferably, the cold air treatment time of the step S5 is 2 minutes, and the temperature of the mold frame is controlled to be 25-50 degrees celsius at this time, so that the cracking between the PMMA material layer and the ABS material layer due to too fast cooling is avoided while the cooling efficiency is ensured.
The beneficial effect of above-mentioned scheme does:
1. by adding a PMMA material layer on the basis of a common ABS material layer, the PMMA material has the characteristic of ageing resistance, and the surface smoothness is superior to that of the ABS material, so that the service life of a finished product (interior trim panel) and the surface smoothness are effectively improved. In addition, the PMMA material has better heat resistance and tensile strength than ABS material, and the heat resistance and mechanical property of the finished product are also improved.
2. According to the plate blank produced by the double-layer co-extrusion process, a thin melting layer is formed between the PMMA material layer and the ABS material layer, so that the PMMA material layer is connected with the ABS material layer. However, in the plastic suction forming process, the existing melting layer is easy to break and cause local splitting because the plate blank has large deformation. The scheme adopts hot air treatment, so that the melting layer is kept in a better softening state to be beneficial to deformation, and the PMMA material layer and the ABS material layer are connected more tightly through the pushing action of air pressure.
3. In the plastic suction forming process, firstly, the corners of the plate blank are deformed greatly, and secondly, the outer edges of the plate blank are firstly cooled, and the two parts are easy to be formed incompletely to generate unqualified products. The scheme is favorable for keeping the plate blank in a softened state through hot air treatment, and the qualification rate of finished products is improved.
4. When the service life of the finished product is over, the PMMA material layer and the ABS material layer can be conveniently separated and recovered by means of heating and the like, and recycling is realized.
The invention also provides a preparation device of the ambulance interior trim panel, which comprises a mold frame and a cover plate, wherein the upper surface of the mold frame is provided with a negative pressure suction hole, the middle part of the lower end surface of the cover plate is provided with a groove, the groove has the same plane size with the mold frame, the cover plate covers the mold frame so as to form a closed cavity between the upper surface of the mold frame and the groove, a ventilating duct is arranged inside the cover plate, the bottom of the groove is provided with a first air port, the ventilating duct is communicated with the first air port, and the side wall of the groove penetrates through a second air port.
The beneficial effect of above-mentioned scheme relative prior art does: through set up the apron in the top of mould frame to set up air pipe and first wind gap on the apron, thereby hot-blast or cold wind can get into and pass the apron and contact with the panel blank of mould frame upper surface. And the arrangement of the second air port enables hot air or cold air to be alternately discharged, thereby improving the production efficiency.
Preferably, the first wind gap has two and locates respectively the left side and the right side of the tank bottom of recess, the second wind gap is located the middle part of preceding lateral wall or the back lateral wall of recess to make hot-blast follow first wind gap exhaust back, can heat with the outer border contact of panel blank earlier, then flow to the middle part of panel blank, promoted thermal utilization ratio.
Preferably, the first air opening is rectangular, and the long side of the first air opening is parallel to the left side of the cover plate, so that hot air or cold air can be more fully contacted with the plate blank.
Preferably, the air conditioner further comprises an adjusting rod and blades, the blades are rotatably connected below the first air port and control the opening and closing of the first air port, the second air port is rectangular in shape, the adjusting rod is rotatably connected with the second air port and control the opening and closing of the second air port, pull ropes are arranged at two ends of the adjusting rod respectively, the pull rope at one end of the adjusting rod is connected with the blades on the left side of the groove, and the pull rope at the other end of the adjusting rod is connected with the blades on the right side of the groove. The adjusting rod is used for simultaneously controlling the opening and closing of the second air port and the rotating angle of the blade, when the second air port is closed due to the fact that the second air port is covered by the adjusting rod, the blade also rotates due to the fact that the pull ropes at the two ends of the adjusting rod are pulled, the first air port is covered and closed by the blade, therefore the cover plate and the die frame are completely sealed, and the plate blank can be heated and insulated through hot air. In addition, through the opening and closing of the first air port and the second air port, the gas in the groove can be replaced more efficiently.
Drawings
FIG. 1 is a schematic view of the layering of a sheet blank of the present invention;
FIG. 2 is a schematic cross-sectional view of an apparatus for preparing an interior panel for an ambulance according to the present invention;
FIG. 3 is a schematic front view of an apparatus for manufacturing an interior panel of an ambulance according to the present invention;
in the drawings: 1-a mould frame; 101-negative pressure suction hole; 2-cover plate; 201-grooves; 202-a ventilation duct; 203-a first tuyere; 204-a second tuyere; 3-a blade; 4-torsion spring; 5-adjusting the rod; 6-pulling a rope; 7-blank of the plate; 701-ABS material layer; 702-a layer of PMMA material; 703-thin film layer.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
Example 1
Referring to fig. 1 and 2, the present invention provides a method for manufacturing an interior panel of an ambulance, which specifically comprises the following steps:
s1, obtaining a plate blank 7 by adopting a double-layer co-extrusion process, wherein the upper surface of the plate blank 7 is a PMMA material layer 702 with the thickness of 0.5mm, and the lower surface of the plate blank 7 is an ABS material layer 701 with the thickness of 5 mm;
s2, cutting the plate blank 7 to a corresponding size according to the requirement, fixing the plate blank 7 on a clamp, moving the plate blank to a high-temperature furnace for heating, wherein the heating temperature is 150 ℃, the heating time is 15 minutes, and the plate blank 7 is ensured to be completely softened;
s3, moving the plate to the position above the mold frame 1, and enabling the edge of the plate to be attached to the edge of the mold frame 1, so that a sealed environment is formed between the plate and the mold frame 1;
s4, starting an air pump to enable negative pressure to be formed between the plate blank 7 and the die frame 1, and enabling the plate blank 7 to be adsorbed to the die frame 1 due to softening;
s5, performing hot air treatment on the upper surface of the plate blank 7 for 2 minutes, wherein the temperature of the hot air is 150 ℃, so that a molten layer between the PMMA material layer and the ABS material layer is kept in a better softening state;
s6, performing cold air treatment on the upper surface of the plate blank 7 for 2 minutes, wherein the temperature of the cold air is 20 ℃, and meanwhile, the temperature of the mold frame 1 is controlled to be kept at 25-50 ℃, so that the plate blank 7 is cooled and formed, and a plate finished product is obtained;
and S7, demolding the formed plate and trimming the waste edges.
It should be noted that, the time required for the hot air treatment in step S5 is in inverse proportion to the temperature of the hot air, and when the temperature of the hot air is lower than 110 ℃, the softening effect of the molten layer is poor; and when the temperature of the hot air is higher than 180 ℃, PMMA flows, which is not beneficial to the forming of the plate blank.
Further, a thin film layer 703 is laid on the PMMA material layer 702 in step S1, so as to prevent the PMMA material layer 702 from being scratched during the subsequent actual use.
Further, the hot air in the hot air treatment of step S4 is blown from the outer edge of the plate material to the middle portion. Because the outer edge of the plate blank 7 is firstly cooled, the hot air firstly contacts the outer edge of the plate blank 7 for heat exchange and then blows to the middle part of the plate blank 7, so that the temperature of the whole plate blank 7 is more balanced and stable.
In addition, as shown in fig. 2 and 3, the invention also provides a preparation device of an ambulance inner decorative plate, which comprises a mold frame 1 and a cover plate 2 which are both in a cuboid shape. The upper surface of the die frame 1 is provided with a forming groove designed according to actual needs, the bottom of the forming groove is provided with a negative pressure suction hole 101, and the negative pressure suction hole 101 is communicated with an air pump. The positions of the upper surface of the die frame 1, which are close to the outer edge, are all located on the same horizontal plane, and the outer edge of the plate blank 7 after being heated and softened is attached to the outer edge of the die frame 1, so that a sealed environment is formed between the plate blank 7 and the forming groove of the die frame 1.
The middle part of the lower end face of the cover plate 2 is provided with a rectangular groove 201, and the length and the width of the groove 201 are the same as those of the mold frame 1. After the cover plate 2 covers the upper part of the die frame 1, the lower end surface of the cover plate 2 is abutted to the upper surface of the die frame 1, and a sealing environment is formed between the plate blank 7 and the groove 201. First wind gap 203 has two and locates the left side and the right side of the tank bottom of recess 201 respectively, and the below of first wind gap 203 articulates there is blade 3. The first air opening 203 and the blade 3 are both rectangular, and the long side of the first air opening 203 is parallel to the left side of the cover plate 2. The first tuyere 203 is closed when the vane 3 is rotated to the horizontal state, and the first tuyere 203 is opened when the vane 3 is rotated to the vertical state. One end of the torsion spring 4 is fixed to the bottom of the groove 201 and the other end is fixed to the blade 3, so that the blade 3 is kept upright in a natural state. The end of the blade 3 extends through the front side wall of the groove 201 to the outside of the cover plate 2.
The inside of the cover plate 2 is also provided with a ventilation duct 202, the upper end of the ventilation duct 202 penetrates through the upper end face of the cover plate 2 to be connected with the blower, and the lower end of the ventilation duct 202 is communicated with the first air opening 203.
The second tuyere 204 is arranged through the middle of the front side wall of the groove 201. The second tuyere 204 is rectangular in shape, and the long side of the second tuyere 204 is horizontally arranged. The adjusting rod 5 is rotatably connected to the middle portion of the second tuyere 204. The both ends of adjusting pole 5 are equipped with stay cord 6 respectively, and the stay cord 6 of the one end of adjusting pole 5 is connected with the tip of the left blade 3 of recess 201 and the stay cord 6 of the other end is connected with the tip of the right blade 3 of recess 201. When the adjusting rod 5 is in a vertical state, the second air port 204 is in an open state, at this time, the blade 3 is kept in the vertical state due to the pulling of the torsion spring 4, the first air port 203 is also opened, hot air enters the groove 201 from the first air port 203, and redundant air is discharged from the second air port 204; when the adjusting rod 5 is rotated to the horizontal state in the counterclockwise direction in fig. 3, the second air opening 204 is closed due to the covering of the adjusting rod 5, the blade 3 is rotated to the horizontal state due to the pulling of the pulling rope 6, the first air opening 203 is also closed, at this time, the cover plate 2 and the mold frame 1 are completely sealed, the hot air is closed inside the groove 201, and the plate blank 7 is continuously heated and insulated.
Furthermore, the adjusting rod 5 can be driven to rotate by a motor, so that automatic production is realized.
The use method of the preparation device of the ambulance interior trimming panel comprises the following steps: firstly, a plate blank 7 is placed on the upper surface of the die frame 1, then the cover plate 2 is covered above the die frame 1, and the adjusting rod 5 is in a vertical state at the moment. At this time, the air pump is started, and the sheet blank 7 is initially attached to the upper surface of the die frame 1 by the suction of the negative pressure suction hole 101. And then, introducing hot air into the groove 201 from the first air opening 203, after 15 seconds, rotating the adjusting rod 5 to be in a horizontal state, closing the first air opening 203 and the second air opening 204, and heating and insulating the plate blank 7. After 1 minute and 45 seconds, the adjusting rod 5 is rotated to be in a vertical state, and cold air is continuously introduced from the first air port 203. Thereby through the reciprocating rotation of control regulation pole 5, can the inside hot-blast or cold wind of fast switch-over recess 201 to realize improving machining efficiency.
The above is the preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that any improvements and modifications to the present invention without departing from the principles of the present invention should also be considered within the scope of the present invention by those skilled in the art.

Claims (6)

1. The manufacturing device of the ambulance interior trimming panel is characterized by comprising a mold frame and a cover plate, wherein a negative pressure suction hole is formed in the upper surface of the mold frame, a groove is formed in the middle of the lower end face of the cover plate, the groove is the same as the mold frame in plane size, the cover plate covers the mold frame, so that a closed cavity is formed between the upper surface of the mold frame and the groove, a ventilating duct is arranged inside the cover plate, a first air port is formed in the bottom of the groove, the ventilating duct is communicated with the first air port, and a second air port penetrates through the side wall of the groove;
the two first air ports are respectively arranged on the left side and the right side of the bottom of the groove, and the second air port is arranged in the middle of the front side wall or the rear side wall of the groove;
the first air opening is rectangular, and the long side of the first air opening is parallel to the left side of the cover plate;
the blade is rotatably connected below the first air port and controls the opening and closing of the first air port, the second air port is rectangular in shape, the adjusting rod is rotatably connected with the second air port and controls the opening and closing of the second air port, pull ropes are arranged at two ends of the adjusting rod respectively, the pull rope at one end of the adjusting rod is connected with the blade on the left side of the groove, and the pull rope at the other end of the adjusting rod is connected with the blade on the right side of the groove.
2. A method for manufacturing an interior panel for an ambulance using the device for manufacturing an interior panel for an ambulance according to claim 1, comprising the steps of:
s1, obtaining a plate blank by adopting a double-layer co-extrusion process, wherein the upper surface of the plate blank is a PMMA material layer, and the lower surface of the plate blank is an ABS material layer;
s2, cutting the plate blank to a corresponding size according to the requirement, fixing the plate blank on a clamp, and heating to a softening state;
s3, moving the plate blank to the position above the die frame, and attaching the outer edge of the plate blank to the outer edge of the die frame to form a sealed environment between the plate blank and the die frame;
s4, starting an air pump to enable negative pressure to be formed between the plate blank and the die frame, and enabling the plate blank to be adsorbed to the die frame due to softening;
s5, carrying out hot air treatment on the upper surface of the plate blank for 1-2 minutes, wherein the temperature of the hot air is 110-180 ℃;
s6, performing cold air treatment on the upper surface of the plate blank to cool and form the plate blank to obtain a plate finished product;
and S7, demolding the formed plate and trimming the waste edges.
3. The method for manufacturing the ambulance interior trim panel according to claim 2, wherein the thickness of the PMMA material layer is 0.4-0.8 mm, and the thickness of the ABS material layer is 4-6 mm.
4. The method for preparing an ambulance interior trim panel according to claim 2, wherein the heating temperature of step S2 is 120-180 ℃ and the softening time is 10-20 minutes.
5. The method as claimed in claim 2, wherein the hot wind in the hot wind process of step S5 is blown from the outer edge of the board to the middle portion.
6. The method as claimed in claim 2, wherein the cooling air treatment of step S6 is performed for 2 minutes while the temperature of the mold frame is controlled to be 25-50 ℃.
CN202010016923.1A 2019-12-30 2020-01-08 Preparation method and preparation device of ambulance interior trimming panel Active CN111152472B (en)

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Denomination of invention: A preparation method and device of ambulance interior trim panel

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