CN109531974B - High-efficiency PC material cladding type thermal forming process - Google Patents
High-efficiency PC material cladding type thermal forming process Download PDFInfo
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- CN109531974B CN109531974B CN201910063713.5A CN201910063713A CN109531974B CN 109531974 B CN109531974 B CN 109531974B CN 201910063713 A CN201910063713 A CN 201910063713A CN 109531974 B CN109531974 B CN 109531974B
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- Prior art keywords
- tubular
- bag body
- air
- air bag
- thermal forming
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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
- B29C51/00—Shaping 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
- B29C51/10—Forming by pressure difference, e.g. vacuum
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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
- B29C51/00—Shaping 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
- B29C51/26—Component parts, details or accessories; Auxiliary operations
- B29C51/265—Auxiliary operations during the thermoforming operation
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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
- B29C51/00—Shaping 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
- B29C51/26—Component parts, details or accessories; Auxiliary operations
- B29C51/28—Component parts, details or accessories; Auxiliary operations for applying pressure through the wall of an inflated bag or diaphragm
-
- 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
- B29C51/00—Shaping 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
- B29C51/26—Component parts, details or accessories; Auxiliary operations
- B29C51/42—Heating or cooling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air Bags (AREA)
- Baking, Grill, Roasting (AREA)
Abstract
The invention discloses an efficient PC material cladding type thermal forming process, which comprises the following steps: (1) taking a tubular inflatable thermal forming die, wherein the tubular inflatable thermal forming die comprises a shell and an air bag body; the shell is internally provided with a tubular space; (2) placing a PC material and an air bag body into the tubular space in sequence, wherein two side edges of the PC material are positioned in corresponding positioning grooves; (3) the air bag body is inflated through the air nozzle, and the air bag body is expanded to tightly press the PC material on the inner wall surface of the tubular space; (4) the tubular air-expansion hot forming die is hung and sent into a constant-temperature baking device through a conveying mechanism. Through utilizing the constant head tank to fix a position the both sides limit of PC material to the cooperation utilizes the gasbag body to compress tightly the PC material, and the back is settled to the PC material, can send into the mould wholly in the constant temperature baking equipment, heaies up, keeps warm and cools off, makes the PC material design, toasts the in-process constancy of temperature, and circulating operation has effectively promoted heat setting's production efficiency and quality.
Description
Technical Field
The invention relates to the technical field of thermal forming processes, in particular to an efficient PC (polycarbonate) material cladding type thermal forming process.
Background
After being manufactured and molded, the PC material is generally a flat sheet, and in order to enable the PC material to be applied to a sound screen of a sound box, the PC material needs to be heated and shaped to obtain a desired shape (such as an arc shape or a tubular shape). At present, the main thermal forming mode of PC materials is to arrange a heating tube in a forming die and utilize the heating tube to heat and shape the PC materials, the forming mode is called as heating forming, because the thermal sensitivity of the PC materials is higher and the heating temperature of the mode is unbalanced, the qualification rate of finished products is very low, and the conventional heating forming mode needs more than 3 minutes to form a product, and the efficiency is very low.
Disclosure of Invention
In view of the above, the present invention is directed to the defects in the prior art, and the main object of the present invention is to provide an efficient PC material cladding type thermoforming process, which can clamp and position PC materials, and improve the thermoforming quality and efficiency of PC materials.
In order to achieve the purpose, the invention adopts the following technical scheme:
an efficient PC material cladding type thermal forming process comprises the following steps:
(1) taking a tubular inflatable thermal forming die, wherein the tubular inflatable thermal forming die comprises a shell and an air bag body; the shell is internally provided with a tubular space, and the inner wall of the tubular space is provided with two positioning grooves which are respectively used for positioning two side edges of the PC material; the air bag body is matched with the tubular space and is arranged in the tubular space, and the air bag body is provided with an air nozzle which is exposed out of the shell;
(2) placing a PC material and an air bag body into the tubular space in sequence, wherein two side edges of the PC material are positioned in corresponding positioning grooves;
(3) the air bag body is inflated through the air nozzle, and the air bag body is expanded to tightly press the PC material on the inner wall surface of the tubular space;
(4) the tubular air-expansion thermal forming die is hung and is conveyed into a constant-temperature baking device through a conveying mechanism, the tubular air-expansion thermal forming die sequentially passes through a heating section, a heat preservation section and a cooling section of the constant-temperature baking device and is output, in the heating section, the temperature of the tubular air-expansion thermal forming die is gradually increased to 135 ℃ when the tubular air-expansion thermal forming die is baked, in the heat preservation section, the temperature is 135 plus 142 ℃, the heat preservation time is 15 minutes, and in the cooling section, the temperature is gradually reduced and then is output;
(5) and taking the tubular air expansion thermal forming die down, discharging the gas in the air bag body through the air nozzle, and taking out the heat-set PC material from the tubular space.
Preferably, the pressure of the gas capsule body in the step (3) is 0.4-0.6 kg.
Preferably, in the step (4), the linear speed of the movement of the tubular inflatable thermal forming die is 1.5-2.5 m/min, and the distance between two adjacent tubular inflatable thermal forming dies is 0.6 m.
Preferably, in the step (4), the temperature is increased for 10 minutes, the temperature is decreased for 10 minutes, and after the temperature is decreased, the material is naturally cooled for 30 minutes to a temperature lower than 50 ℃ to complete the thermal forming.
As a preferred scheme, the shell comprises a base body, an upper cover and two end covers; one side of the upper cover is hinged with one side of the seat body, the two end covers are respectively fixed at two ends of the seat body, and when the upper cover is in a closed state, the upper cover, the seat body and the two end covers jointly enclose to form the tubular space.
As a preferred scheme, one side of the seat body is provided with a plurality of first pivoting parts arranged at intervals, one side of the upper cover is provided with a plurality of second pivoting parts arranged at intervals, and the plurality of second pivoting parts and the plurality of first pivoting parts are arranged in a staggered manner and are all pivoted with one shaft piece.
Preferably, one of the positioning grooves is located on an inner wall surface of the seat body, and the other positioning groove is located on an inner wall surface of the upper cover.
As a preferable scheme, through holes are formed in the two end covers, the air nozzle is located at one end of the air bag body, a positioning column is arranged at the other end of the air bag body, and the positioning column and the air nozzle are respectively inserted into the corresponding through holes.
Preferably, the end cap is fastened to the end of the seat body by screws.
As a preferred scheme, the shell is of an integrated structure, and the outer surface of the shell is provided with an opening for placing the PC material and the gas bag body into the tubular space.
Compared with the prior art, the invention has obvious advantages and beneficial effects, and specifically, the technical scheme includes that:
through utilizing the constant head tank to fix a position the both sides limit of PC material to the cooperation utilizes the gasbag body to compress tightly the PC material, and the back is settled to the PC material, can send into the mould wholly in the constant temperature baking equipment, heaies up, keeps warm and cools off, makes the PC material design, toasts the in-process constancy of temperature, and circulating operation has effectively promoted heat setting's production efficiency and quality.
To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Drawings
FIG. 1 is an assembled perspective view of the preferred embodiment of the present invention;
FIG. 2 is an assembled perspective view of another angle of the preferred embodiment of the present invention;
FIG. 3 is an exploded view of the preferred embodiment of the present invention;
FIG. 4 is a perspective view of the preferred embodiment of the present invention in an open position;
FIG. 5 is a perspective view of the preferred embodiment of the present invention from another angle of the open position;
FIG. 6 is a cross-sectional view of a preferred embodiment of the present invention;
FIG. 7 is a schematic illustration of the baking process in the preferred embodiment of the present invention;
FIG. 8 is a perspective view of an unformed PC material in a preferred embodiment of the present invention;
FIG. 9 is a perspective view of the molded PC material in the preferred embodiment of the present invention.
The attached drawings indicate the following:
100. tubular air expansion thermal forming die 10 and shell
11. Base 111 and first pivot part
12. The upper cover 121 and the second pivot part
13. End cover 14 and shaft piece
15. Screw 101, tubular space
102. Positioning groove 103, through hole
20. Air bag body 21 and air nozzle
22. Positioning column 30, PC material
40. Conveying mechanism 50 and constant-temperature baking device
51. A temperature raising section 52 and a heat preservation section
53. And a cooling section.
Detailed Description
The invention discloses an efficient PC material cladding type thermal forming process, which comprises the following steps:
(1) a tubular inflatable thermoforming mold 100 is provided, which comprises a shell 10 and an air bag body 20.
The casing 10 has a tubular space 101 therein, and the inner wall of the tubular space 101 has two positioning slots 102 for positioning two sides of the PC material 30; in this embodiment, the housing 10 is made of aluminum alloy and has a long shape.
The airbag body 20 is adapted to the tubular space 101 and disposed in the tubular space 101, the airbag body 20 has an air tap 21, the air tap 21 is exposed out of the housing 10, and in this embodiment, the airbag body 20 is made of a high temperature resistant flexible material.
Specifically, in the present embodiment, the housing 10 includes a base 11, an upper cover 12, and two end covers 13; one side of the upper cover 12 is hinged to one side of the base 11, the two end covers 13 are respectively fixed to two ends of the base 11, and when the upper cover 12 is in a closed state, the upper cover 12, the base 11 and the two end covers 13 together form the tubular space 101. One side of the seat 11 has a plurality of first pivoting parts 111 arranged at intervals, one side of the upper cover 12 has a plurality of second pivoting parts 121 arranged at intervals, and the plurality of second pivoting parts 121 and the plurality of first pivoting parts 111 are arranged in a staggered manner and are all pivoted with a shaft 14; one positioning groove 102 is located on the inner wall surface of the seat body 11, and the other positioning groove 102 is located on the inner wall surface of the upper cover 12; the end cover 13 is locked at the end of the seat body 11 through a screw 15; the two end covers 13 are respectively provided with a through hole 103, the air tap 21 is positioned at one end part of the air bag body 20, the other end part of the air bag body 20 is provided with a positioning column 22, and the positioning column 22 and the air tap 21 are respectively inserted into the corresponding through holes 103.
Of course, the housing 10 may be an integral structure, and the outer surface thereof is provided with an opening for placing the PC material 30 and the airbag body 20 into the tubular space 101.
(2) The PC material 30 and the gas bag body 20 are sequentially placed into the tubular space 101, and two side edges of the PC material 30 are positioned in the corresponding positioning grooves 102.
(3) The air bag body 20 is inflated by the air nozzle 21, and the air bag body 20 rises to press the PC material 30 against the inner wall surface of the tubular space 101. In this embodiment, the pressure of the balloon body 20 is 0.4-0.6 kg.
(4) As shown in fig. 7, the tubular expansion thermal forming mold 100 is suspended and is conveyed into the constant temperature baking device 50 through the conveying mechanism 40, the tubular expansion thermal forming mold 100 is conveyed out through the temperature rising section 51, the heat preservation section 52 and the cooling section 53 of the constant temperature baking device 50 in sequence, in the temperature rising section, the tubular expansion thermal forming mold 100 is gradually heated up to be baked to 135 ℃, in the heat preservation section, the temperature is 135-142 ℃, the heat preservation time is 15 minutes, and in the cooling section, the temperature is gradually cooled down and then conveyed out. In this embodiment, the linear speed of movement of the tubular inflatable thermoforming molds 100 is 1.5-2.5 meters per minute, the distance between two adjacent tubular inflatable thermoforming molds 100 is 0.6 meter, the temperature rise time is 10 minutes, the temperature decrease time is 10 minutes, and after the temperature decrease, the tubular inflatable thermoforming molds 100 are naturally cooled for 30 minutes until the temperature is lower than 50 ℃ to complete thermoforming; the constant temperature baking device 50 is a tunnel furnace.
(5) The tubular inflatable thermoforming mold 100 is removed, the gas in the airbag body 20 is released through the air nozzle 21, and then the heat-set PC material 30 is taken out from the tubular space 101.
By adopting the forming process, the PC material 30 has good forming quality and extremely high stability, can be circularly and uninterruptedly roasted and subjected to assembly line operation, has very high production efficiency and large yield, can produce more than 300PCS in each hour, and improves the production efficiency by more than 15 times.
The design of the invention is characterized in that: through utilizing the constant head tank to fix a position the both sides limit of PC material to the cooperation utilizes the gasbag body to compress tightly the PC material, and the back is settled to the PC material, can send into the mould wholly in the constant temperature baking equipment, heaies up, keeps warm and cools off, makes the PC material design, toasts the in-process constancy of temperature, and circulating operation has effectively promoted heat setting's production efficiency and quality.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any minor modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention are within the technical scope of the present invention.
Claims (7)
1. The utility model provides a high-efficient type PC material cladding formula thermoforming technology which characterized in that: the method comprises the following steps:
(1) taking a tubular inflatable thermal forming die, wherein the tubular inflatable thermal forming die comprises a shell and an air bag body; the shell is internally provided with a tubular space, and the inner wall of the tubular space is provided with two positioning grooves which are respectively used for positioning two side edges of the PC material; the air bag body is matched with the tubular space and is arranged in the tubular space, and the air bag body is provided with an air nozzle which is exposed out of the shell; the shell comprises a seat body, an upper cover and two end covers; one side edge of the upper cover is hinged with one side edge of the seat body, the two end covers are respectively fixed at the two ends of the seat body, and when the upper cover is in a closed state, the upper cover, the seat body and the two end covers jointly enclose to form the tubular space; one side of the seat body is provided with a plurality of first pivoting parts which are arranged at intervals, one side of the upper cover is provided with a plurality of second pivoting parts which are arranged at intervals, and the plurality of second pivoting parts and the plurality of first pivoting parts are arranged in a staggered manner and are all pivoted with a shaft element;
(2) placing a PC material and an air bag body into the tubular space in sequence, wherein two side edges of the PC material are positioned in corresponding positioning grooves;
(3) the air bag body is inflated through the air nozzle, and the air bag body is expanded to tightly press the PC material on the inner wall surface of the tubular space;
(4) the tubular air-expansion thermal forming die is hung and is conveyed into a constant-temperature baking device through a conveying mechanism, the tubular air-expansion thermal forming die sequentially passes through a heating section, a heat preservation section and a cooling section of the constant-temperature baking device and is output, in the heating section, the temperature of the tubular air-expansion thermal forming die is gradually increased to 135 ℃ when the tubular air-expansion thermal forming die is baked, in the heat preservation section, the temperature is 135 plus 142 ℃, the heat preservation time is 15 minutes, and in the cooling section, the temperature is gradually reduced and then is output; the temperature rise time is 10 minutes, the temperature reduction time is 10 minutes, and the hot forming is completed after the temperature is naturally cooled for 30 minutes to the temperature lower than 50 ℃;
(5) and taking the tubular air expansion thermal forming die down, discharging the gas in the air bag body through the air nozzle, and taking out the heat-set PC material from the tubular space.
2. The efficient PC material cladding hot forming process according to claim 1, wherein: the pressure of the gas bag body in the step (3) is 0.4-0.6 kg.
3. The efficient PC material cladding hot forming process according to claim 1, wherein: the linear speed of movement of the tubular air-expansion thermal forming die in the step (4) is 1.5-2.5 m/min, and the distance between two adjacent tubular air-expansion thermal forming dies is 0.6 m.
4. The efficient PC material cladding hot forming process according to claim 1, wherein: one positioning groove is positioned on the inner wall surface of the seat body, and the other positioning groove is positioned on the inner wall surface of the upper cover.
5. The efficient PC material cladding hot forming process according to claim 1, wherein: through-holes are formed in the two end covers, the air nozzle is located at one end of the air bag body, a positioning column is arranged at the other end of the air bag body, and the positioning column and the air nozzle are respectively inserted into the corresponding through-holes.
6. The efficient PC material cladding hot forming process according to claim 1, wherein: the end cover is locked at the end part of the seat body through a screw.
7. The efficient PC material cladding hot forming process according to claim 1, wherein: the shell is of an integrated structure, and the outer surface of the shell is provided with an opening for placing a PC material and the air bag body into the tubular space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910063713.5A CN109531974B (en) | 2019-01-23 | 2019-01-23 | High-efficiency PC material cladding type thermal forming process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910063713.5A CN109531974B (en) | 2019-01-23 | 2019-01-23 | High-efficiency PC material cladding type thermal forming process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109531974A CN109531974A (en) | 2019-03-29 |
| CN109531974B true CN109531974B (en) | 2021-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910063713.5A Active CN109531974B (en) | 2019-01-23 | 2019-01-23 | High-efficiency PC material cladding type thermal forming process |
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Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102314924B (en) * | 2010-07-08 | 2015-01-28 | 福群科技集团有限公司 | Glue dispensing process for hard disk driving frame |
| CN104070687A (en) * | 2014-06-06 | 2014-10-01 | 中航复合材料有限责任公司 | Method for forming composite material pipe mold element by pressurizing air bags with assistance of resin film transfer |
| CN106182804A (en) * | 2016-08-19 | 2016-12-07 | 上海复合材料科技有限公司 | The mould of composite pipe and forming method |
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