CN111633968B - Large-scale aircraft glass heat preservation stretching device - Google Patents
Large-scale aircraft glass heat preservation stretching device Download PDFInfo
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- CN111633968B CN111633968B CN202010494183.2A CN202010494183A CN111633968B CN 111633968 B CN111633968 B CN 111633968B CN 202010494183 A CN202010494183 A CN 202010494183A CN 111633968 B CN111633968 B CN 111633968B
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- stretching
- pull rod
- glass
- unfolding
- heat preservation
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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
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
- B29C55/20—Edge clamps
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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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/16—Cooling
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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
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
-
- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/16—Cooling
- B29C2035/1616—Cooling using liquids
-
- 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
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
- B29C2037/90—Measuring, controlling or regulating
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Thermal Sciences (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
The invention relates to an aircraft glass forming device, in particular to a large aircraft glass heat-insulating stretching device, which comprises: the device comprises a beam structure, a stretching mechanism, a clamping device, an unfolding device, a heat preservation cavity, a cooling device, a motor and a transmission device. The glass drawing device is characterized in that the beam structure is used as a main stress structure for supporting the drawing mechanism, the drawing mechanism pulls the clamping device to draw glass when working, and the clamping device is used for clamping the glass in the glass drawing process. The unfolding device ensures that the thin pull rod is unfolded at a constant speed in the stretching process, the heat preservation cavity preserves heat after being heated, the cooling device locally cools the clamping part in the stretching process, and the stretching power generated by the motor is transmitted by the transmission device through the lead screw. The device can integrally insulate the glass in the stretching process, so that the aviation glass is uniformly heated and uniformly extended.
Description
Technical Field
The invention relates to an aviation organic glass forming device, in particular to a large aviation glass stretching device.
Background
The aircraft glass is used for an airplane and has enough strength and good optical performance, the current aircraft glass is mainly made of organic glass, and the organic glass plate needs to be uniformly stretched to a specified size under a heating state, so that irregularly arranged macromolecular chains are orderly arranged, and certain internal stress is kept.
At present, no aviation glass stretching device special for the aspect exists in China. In the prior art, the invention patent with the publication number of CN101837637A and the name of '360-degree multidirectional stretching process of aviation organic glass' provides an organic glass stretching method, the grippers are used for stretching outwards by 360 degrees by taking a central point as a reference, and each gripper provides different tension values through calculation so as to ensure that the glass is uniformly stressed. However, the gripper has no self-tightening function, so the method cannot be well used for stretching the organic glass; meanwhile, 360-degree multidirectional stretching is achieved, the gripping force and the moving distance of each gripper need to be calculated and controlled in real time, and the practicability is poor.
The utility model discloses a device of biaxial stretching organic glass is given in utility model patent that publication number is CN203198251U, the name is "an organic glass two-way even automatic stretching device", and the device blocks that glass stretches through tensile pole, and the mechanism of stretching can make the dop interval evenly increase. However, the utility model has no heat preservation and cooling device, the practicability is relatively poor, the stress of the stretching rod is limited, and the stretching size of the organic glass is limited.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a large-scale aviation glass heat-insulating stretching device, which realizes the directional stretching of aviation organic glass and improves the mechanical property of the aviation organic glass.
In order to achieve the purpose, the invention adopts the following technical scheme that the device comprises a beam structure, a stretching mechanism, a clamping device, an unfolding device, a heat preservation cavity, a cooling device, a motor and a transmission device.
The beam structure is used as a main stress structure for supporting the stretching mechanism.
And the stretching mechanism pulls the clamping device to complete glass stretching during working.
The clamping device is used for clamping the glass in the process of stretching the glass.
The unfolding device is used for ensuring that the thin pull rod is unfolded at a constant speed in the stretching process.
The heat preservation cavity is used for preserving heat after the glass is heated.
The stretching power generated by the motor is transmitted by the transmission device through the lead screw; the glass is integrally insulated in the stretching process, and the clamping part is locally cooled.
Furthermore, the beam structure comprises a main beam and auxiliary beams (capable of bearing 100kN tensile force), a through groove is formed in the middle of each main beam and each auxiliary beam, the pull rods pass through the through grooves at the same interval, and the uniform extension is guaranteed through the pulleys.
Furthermore, the stretching mechanism comprises two lead screws, a thin pull rod connected with the clamping device and two unfolding pull rods, wherein one end of each lead screw is fixed on the main beam, and the other end of each lead screw is arranged on the bearing; one end of the thin pull rod is connected with the clamping device, one end of the thin pull rod is clamped at the two ends of the through groove of the main beam by the pulleys, one end of the unfolding pull rod is connected with the thin pull rod by the connecting rod group, and the other end of the unfolding pull rod is connected with the unfolding pull rods on other working surfaces.
Furthermore, the unfolding device comprises an upper gear rack, a lower gear rack and a connecting rod group connected with the pull rod, the unfolding pull rod matched with the unfolding device is fixed on the gear rack, and the stretching speed of the gear rack is consistent with the extending speed during working. The unfolding device is assembled below the auxiliary beam thin pull rod.
Furthermore, a through groove is formed in the middle of the heat preservation cavity for the thin pull rod to pass through, and the organic glass is stretched in the heat preservation cavity.
Furthermore, the cooling device is arranged on the clamping device, and the clamping part is locally cooled through water circulation in the working process.
Compared with the prior art, the invention has the beneficial effects.
The invention can integrally insulate the glass in the stretching process, so that the aviation glass is uniformly heated and extended. Meanwhile, the clamping part is locally cooled, and the clamping force is ensured.
The invention has the function of active extension, can be stretched evenly in two directions, and can ensure the extension evenness of the glass.
The glass can be always clamped in the stretching process, the stretching can be completed at one time, the manual intervention is not used, the burden of workers is reduced, and the glass stretching device is safe and reliable.
The main beam can bear the force of 100kN and can stretch organic glass with large size of 4m multiplied by 4m and the like.
Drawings
The invention is further described with reference to the following figures and detailed description. The scope of the invention is not limited to the following expressions.
Fig. 1 is a diagram showing a state before stretching.
FIG. 2 is an axonometric view of an aerospace plexiglas drawing mechanism.
Fig. 3 is a schematic view of a clamping device.
FIG. 4 is a schematic view of a holding chamber.
Fig. 5 is a schematic view of the deployment device.
In the figure, a lead screw 1, a main beam 2, a connecting rod group 3, an auxiliary beam 4, a thin pull rod 5, a clamping device 6, an unfolding pull rod 7, a gear rack 8, a connecting rod 9, a heat preservation cavity 10, an organic glass plate 11, a cooling device 12 and a grabbing head 13 are arranged.
Detailed Description
As shown in fig. 1 to 5, the present invention comprises: the device comprises a beam structure, a stretching mechanism, a clamping device, an unfolding device, a heat preservation cavity, a cooling device, a motor, a transmission device and the like. The beam structure comprises a main beam and an auxiliary beam and can bear 100kN tensile force.
The beam structure is used as a main stress structure for supporting the stretching mechanism, the stretching mechanism pulls the clamping device to complete glass stretching when working, the clamping device is used for clamping glass in the glass stretching process, the unfolding device ensures that the thin pull rod is unfolded at a constant speed in the stretching process, the heat insulation cavity is used for heat insulation after the glass is heated, the cooling device is used for locally cooling the clamping part in the stretching process, and stretching power generated by the motor is transmitted by the transmission device through the lead screw; the beam structure mainly comprises a main beam and an auxiliary beam, wherein the middle of the main beam and the auxiliary beam is provided with a through groove, and the thin pull rods pass through the through grooves at the same interval and are clamped on the main beam and the auxiliary beam by pulleys; the stretching mechanism comprises two lead screws, a thin pull rod connected with the clamping device and two unfolding pull rods, wherein one end of each lead screw is fixed on the main beam, and the other end of each lead screw is installed on the bearing. One end of the thin pull rod is connected with the clamping device, one end of the thin pull rod is clamped at the two ends of the through groove of the main beam by the pulleys, one end of the unfolding pull rod is connected with the thin pull rod by a connecting rod group, and the other end of the unfolding pull rod is connected with the unfolding pull rods on other working surfaces; the unfolding device comprises an upper gear rack, a lower gear rack and a connecting rod group connected with the pull rod, the unfolding pull rod matched with the unfolding device is fixed on the gear racks, and the stretching speed and the extending speed of the gear racks are ensured to be consistent during working. The unfolding device is assembled below the auxiliary beam thin pull rod; a through groove is formed in the middle of the heat preservation cavity for the thin pull rod to pass through, and the organic glass is stretched in the heat preservation cavity; the cooling device is arranged on the clamping device and realizes cooling through water circulation in the working process. The device can integrally insulate the glass in the stretching process, so that the aviation glass is uniformly heated and uniformly extended. Meanwhile, the clamping part is locally cooled, and the 100kN stretching force is ensured. The device can accurately stretch the aviation organic glass to an ultra-large size of more than 4 m.
The operation is as follows.
Firstly, heat and soften organic glass board 11 through hot-blast main, the heating finishes and starts cooling device 12 and lower the temperature to certain temperature to organic glass board 11, opens heat preservation chamber 10 and keeps warm to organic glass board 11. When the stretching operation is started, stretching power generated by a motor is transmitted to a screw rod 1 through a transmission mechanism, the screw rod 1 pulls a main beam 2 and an auxiliary beam 4, the main beam 2 drives a thin pull rod 5 to do stretching movement, a connecting rod 9 of a clamping device 6 is pulled while the other end of the thin pull rod 5 is clamped on the auxiliary beam 4 to be kept still in the stretching and thinning process of an organic glass plate 11, a grabbing head 13 is compressed and kept to grab the glass plate 11 by utilizing the lever principle, an unfolding pull rod 7 is pulled to the parallel direction by an unfolding pull rod 7 of the other working surface when the main beam 2 drives the thin pull rod 5 to move, a gear rack 8 is pushed by the unfolding pull rod 7 to act to actively drive the auxiliary beam 4 and the unfolding pull rod 7 to move, and the unfolding pull rod 7 keeps the thin pull rod 5 to be unfolded at the stretching speed of the auxiliary beam 4 through a connecting rod group 3 due to the transmission ratio of an upper gear rack 8 and a lower gear rack 8 being 1. The glass sheet 11 is drawn to a stop at one-third of its original thickness. As shown in figure 1, the organic glass plate is square, four edges of the organic glass plate are subjected to the same tensile force of the stretcher, the organic glass plate is uniformly thinned, and the purpose of enhancing the mechanical property is achieved.
It should be understood that the detailed description of the present invention is only for illustrating the present invention and is not limited by the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention can be modified or substituted equally to achieve the same technical effects; and are within the scope of the present invention as long as the requirements of use are met.
Claims (3)
1. A large-scale aviation glass heat preservation stretching device comprises a beam structure, a stretching mechanism, a clamping device, an unfolding device, a heat preservation cavity, a cooling device, a motor and a transmission device; it is characterized in that the beam structure is used as a main stress structure for supporting the stretching mechanism, the stretching mechanism pulls the clamping device to complete glass stretching when working,
the clamping device is used for clamping the glass in the process of stretching the glass,
the unfolding device is used for ensuring that the thin pull rod is unfolded at a constant speed in the stretching process,
the heat preservation cavity is used for preserving heat after the glass is heated,
the stretching power generated by the motor is transmitted by the transmission device through the lead screw; the glass is integrally insulated in the stretching process, and the clamping part is locally cooled;
the beam structure comprises a main beam and auxiliary beams, wherein through grooves are formed in the middles of the main beam and the auxiliary beams, pull rods pass through the through grooves at the same intervals, and uniform extension is guaranteed through pulleys;
the stretching mechanism comprises two lead screws, a thin pull rod connected with the clamping device and two unfolding pull rods, wherein one end of each lead screw is fixed on the main beam, and the other end of each lead screw is arranged on the bearing; one end of the thin pull rod is connected with the clamping device, one end of the thin pull rod is clamped at the two ends of the through groove of the main beam by the pulleys, one end of the unfolding pull rod is connected with the thin pull rod by a connecting rod group, and the other end of the unfolding pull rod is connected with the unfolding pull rods on other working surfaces;
the unfolding device comprises an upper gear rack, a lower gear rack and a connecting rod group connected with a pull rod, the unfolding pull rod matched with the unfolding device is fixed on the gear rack, and the stretching speed of the gear racks is ensured to be consistent with the extending speed during working; the unfolding device is assembled below the auxiliary beam thin pull rod;
firstly, heating and softening the organic glass plate through a hot air pipeline, starting a cooling device to cool the organic glass plate to a certain temperature after heating is finished, and starting a heat preservation cavity to preserve heat of the organic glass plate;
when the stretching work is started, stretching power generated by a motor is transmitted to a lead screw through a transmission mechanism, the lead screw pulls a main beam and an auxiliary beam, the main beam drives a thin pull rod to do stretching movement, a connecting rod of a clamping device is pulled while the other end of the thin pull rod is clamped on the auxiliary beam to be kept still in the stretching and thinning process of the organic glass plate, a grabbing head is compressed by utilizing a lever principle to keep grasping the glass plate, an unfolding pull rod is pulled to move towards the parallel direction by an unfolding pull rod of the other working surface when the main beam drives the thin pull rod to move, a gear rack is pushed by the unfolding pull rod to act, the auxiliary beam and the unfolding pull rod are actively driven to move, and the unfolding pull rod keeps the thin pull rod to be unfolded with the stretching speed of the auxiliary beam through a connecting rod group due to the transmission ratio of an upper gear rack and a lower gear rack;
the glass sheet is drawn to a point one-third of its original thickness.
2. The large aircraft glass heat-insulating stretching device according to claim 1, characterized in that: a through groove is formed in the middle of the heat preservation cavity for the thin pull rod to pass through, and the organic glass is stretched in the heat preservation cavity.
3. The large aircraft glass heat-insulating stretching device according to claim 1, characterized in that: the cooling device is arranged on the clamping device and is used for locally cooling the clamping part through water circulation in the working process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010494183.2A CN111633968B (en) | 2020-06-03 | 2020-06-03 | Large-scale aircraft glass heat preservation stretching device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010494183.2A CN111633968B (en) | 2020-06-03 | 2020-06-03 | Large-scale aircraft glass heat preservation stretching device |
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| CN111633968A CN111633968A (en) | 2020-09-08 |
| CN111633968B true CN111633968B (en) | 2022-06-24 |
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| CN112936835A (en) * | 2021-03-03 | 2021-06-11 | 沈阳工业大学 | Two-way aircraft glass stretcher owner moves extension device |
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