CN112919783A - Optical glass bar hot forming process and hot forming device thereof - Google Patents
Optical glass bar hot forming process and hot forming device thereof Download PDFInfo
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- CN112919783A CN112919783A CN202110198162.0A CN202110198162A CN112919783A CN 112919783 A CN112919783 A CN 112919783A CN 202110198162 A CN202110198162 A CN 202110198162A CN 112919783 A CN112919783 A CN 112919783A
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- 239000005304 optical glass Substances 0.000 title claims abstract description 91
- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000008569 process Effects 0.000 title claims abstract description 25
- 239000011521 glass Substances 0.000 claims abstract description 121
- 238000007493 shaping process Methods 0.000 claims abstract description 42
- 238000005096 rolling process Methods 0.000 claims abstract description 34
- 238000010438 heat treatment Methods 0.000 claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 26
- 230000007246 mechanism Effects 0.000 claims description 63
- 230000003068 static effect Effects 0.000 claims description 41
- 238000000137 annealing Methods 0.000 claims description 27
- 238000005520 cutting process Methods 0.000 claims description 19
- 238000013461 design Methods 0.000 claims description 10
- 238000003856 thermoforming Methods 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 239000002002 slurry Substances 0.000 abstract description 8
- 239000002699 waste material Substances 0.000 abstract description 8
- 238000010923 batch production Methods 0.000 abstract description 7
- 238000012545 processing Methods 0.000 abstract description 6
- 230000009471 action Effects 0.000 description 10
- 238000004513 sizing Methods 0.000 description 9
- 230000005484 gravity Effects 0.000 description 5
- 238000013459 approach Methods 0.000 description 3
- 230000003746 surface roughness Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 239000005347 annealed glass Substances 0.000 description 1
- 238000013473 artificial intelligence Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/04—Re-forming tubes or rods
- C03B23/055—Re-forming tubes or rods by rolling
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/04—Re-forming tubes or rods
- C03B23/045—Tools or apparatus specially adapted for re-forming tubes or rods in general, e.g. glass lathes, chucks
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- Chemical & Material Sciences (AREA)
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- Manufacturing & Machinery (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
The invention discloses a hot forming process and a hot forming device for an optical glass bar, and relates to the technical field of optical glass processing. Firstly, heating and softening a segment-shaped glass blank; then, rolling and extending the segment-shaped glass blank to form an intermediate bar stock; and then rolling and shaping the intermediate bar stock to form the optical glass bar stock. Compared with the prior art, the hot forming process for the optical glass bar provided by the invention adopts the step of rolling and extending the segment-shaped glass blank to form the intermediate bar, so that the hot forming of the optical glass bar can be realized, the material waste is avoided, the production cost is saved, the glass slurry is avoided, and the hot forming process is practical, environment-friendly and suitable for batch production.
Description
Technical Field
The invention relates to the technical field of optical glass processing, in particular to a thermal forming process and a thermal forming device for an optical glass bar.
Background
At present, optical glass lenses are widely applied to the fields of security monitoring, vehicle-mounted systems, smart homes, artificial intelligence and the like due to high light transmittance, high refractive index and high hardness. At present, a small-caliber glass lens is generally prepared from an optical glass bar, the optical glass bar is generally processed by cutting a precisely annealed glass block material into strips, and then rounding the strip glass to obtain the glass bar, in the process, the strip glass with a rectangular cross section is ground into the optical glass bar with a circular cross section, which causes about 30% of material waste, increases the cost, generates a large amount of glass slurry and affects the environment.
In view of the above, it is important to design and manufacture a thermal forming process for optical glass rod and a thermal forming apparatus thereof, which can save material cost, especially in the production of optical glass rod.
Disclosure of Invention
The invention aims to provide a hot forming process for optical glass bars, which can realize hot forming of the optical glass bars, avoid material waste, save production cost, avoid glass slurry generation, is practical and environment-friendly and is suitable for batch production.
Another objective of the present invention is to provide a thermal forming apparatus for optical glass rod, which can achieve thermal forming of optical glass rod, avoid material waste, save production cost, avoid glass slurry generation, and is practical, environment-friendly and suitable for batch production.
The invention is realized by adopting the following technical scheme.
A hot forming process for optical glass rod materials comprises the following steps: heating and softening the sectional glass blank; rolling and extending the segment-shaped glass blank to form an intermediate bar; and rolling and shaping the intermediate bar stock to form the optical glass bar stock.
Optionally, before the step of heating and softening the segment-shaped glass blank, the optical glass rod hot forming process further includes: cutting the block-shaped glass blank to prepare a segment-shaped glass blank; sorting out the section-shaped glass blanks meeting the conditions; the surface of the segment-shaped glass blank is ground by a vibration grinder.
Optionally, the step of cutting the block glass blank to produce a segment glass blank comprises: cutting the block-shaped glass blank into strip-shaped glass blanks by using a cutting machine; and cutting the strip-shaped glass blank into sections to form the section-shaped glass blank.
Optionally, the step of sorting the qualified segment glass blanks comprises: the volume and/or weight of the glass segment blanks are measured and sorted according to the volume and/or weight of the glass segment blanks.
Optionally, the step of roll-setting the intermediate rod material to form the optical glass rod material comprises: preliminarily shaping the intermediate bar stock to form a pre-shaped bar stock; and carrying out secondary shaping on the pre-shaped bar stock to form the optical glass bar stock.
Optionally, after the step of rolling and shaping the intermediate rod to form the optical glass rod, the optical glass rod hot forming process further includes: and annealing the optical glass bar by using an annealing furnace.
Optionally, the step of annealing the optical glass rod material with an annealing furnace comprises: the annealing temperature of the annealing furnace is controlled to be 400-900 ℃.
The utility model provides an optical glass bar hot forming device, including the frame and install the heating furnace in the frame, stretch roller mechanism and design roller mechanism, the exit position of heating furnace is corresponding with stretch roller mechanism's position, the heating furnace is used for carrying out the heat softening to section form glass blank, stretch roller mechanism sets up in the top of design roller mechanism, stretch roller mechanism is used for extending the roll-in of section form glass blank to form middle bar, design roller mechanism is used for roll-in with middle bar and stereotypes, in order to form optical glass bar.
Optionally, the drawing roller mechanism comprises a first static roller, a first movable roller, a second movable roller, a first driving part and a second driving part, the first static roller, the first movable roller and the second movable roller are arranged in parallel, the first static roller is mounted on the frame and can rotate relative to the frame, the first driving part is mounted on the frame and connected with the first movable roller, the second driving part is mounted on the frame and connected with the second movable roller, the axis of the first static roller and the axis of the first movable roller are located on the same horizontal plane, a rolling space for accommodating the sectional glass blank is formed between the first static roller and the first movable roller, the second movable roller is arranged above the rolling space, the second driving part is used for driving the second movable roller to extend into the rolling space so as to press the sectional glass blank between the first static roller and the first movable roller, the first static roller, the second movable roller, the second driving part is arranged above the rolling space, and the second driving part is used for driving the sectional glass blank to extend into the rolling space so as, The first movable roller and the second movable roller are used for rotating in the same direction to roll and extend the section-shaped glass blank to form a middle bar, and the first driving piece is used for driving the first movable roller to be away from the first static roller so that the middle bar falls into the shaping roller mechanism downwards.
Optionally, the shaping roller mechanism includes a second static roller, a third movable roller and a third driving element, the second static roller is mounted on the frame and can rotate relative to the frame, the third driving element is mounted on the frame and connected to the third movable roller, an axis of the second static roller and an axis of the third movable roller are located on the same horizontal plane, a shaping space for accommodating the middle bar is formed between the second static roller and the third movable roller, the second static roller and the third movable roller are used for rotating in the same direction to roll and shape the middle bar to form the optical glass bar, and the third driving element is used for driving the third movable roller to be away from the second static roller so as to discharge the optical glass bar downwards.
The hot forming process and the hot forming device for the optical glass bar provided by the invention have the following beneficial effects:
the invention provides a hot forming process of an optical glass bar, which comprises the following steps of firstly heating and softening a segment-shaped glass blank; then, rolling and extending the segment-shaped glass blank to form an intermediate bar stock; and then rolling and shaping the intermediate bar stock to form the optical glass bar stock. Compared with the prior art, the hot forming process for the optical glass bar provided by the invention adopts the step of rolling and extending the segment-shaped glass blank to form the intermediate bar, so that the hot forming of the optical glass bar can be realized, the material waste is avoided, the production cost is saved, the glass slurry is avoided, and the hot forming process is practical, environment-friendly and suitable for batch production.
The optical glass bar hot forming device provided by the invention is used for implementing an optical glass bar hot forming process, can realize hot processing forming of optical glass bars, avoids material waste, saves production cost, avoids glass slurry generation, is practical and environment-friendly, and is suitable for batch production.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a block diagram illustrating the steps of a thermal forming process for an optical glass rod material according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an optical glass rod thermal forming apparatus according to an embodiment of the present invention.
Icon: 100-optical glass rod thermoforming device; 110-a rack; 120-heating furnace; 130-a stretching roller mechanism; 131-a first stationary roller; 132-a first moving roller; 133-a second movable roller; 134-roll space; 140-a sizing roller mechanism; 141-a second stationary roller; 142-a third movable roller; 143-a shaping space; 150-a first channel; 160-a second channel; 170-third channel.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally put in use of products of the present invention, and are only for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "connected," "mounted," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Some embodiments of the invention are described in detail below with reference to the accompanying drawings. Features in the embodiments described below may be combined with each other without conflict.
Referring to fig. 1 and fig. 2, a thermal forming apparatus 100 for optical glass rod material is provided in accordance with an embodiment of the present invention. The hot-forming die can realize hot-forming of optical glass bars, avoids material waste, saves production cost, avoids glass slurry generation, is practical and environment-friendly, and is suitable for batch production.
The optical glass rod hot forming apparatus 100 includes a frame 110, a heating furnace 120, a stretching roller mechanism 130, a setting roller mechanism 140, a first passage 150, and a second passage 160. The heating furnace 120, the stretching roller mechanism 130, the setting roller mechanism 140, the first passage 150 and the second passage 160 are all mounted on the frame 110. The outlet position of the heating furnace 120 corresponds to the position of the drawing roller mechanism 130, the heating furnace 120 is connected with the drawing roller mechanism 130 through the first channel 150, the heating furnace 120 is used for heating and softening the sectional glass blanks, and the softened sectional glass blanks can roll into the drawing roller mechanism 130 through the first channel 150 under the action of gravity. The stretching roller mechanism 130 is arranged above the setting roller mechanism 140, the stretching roller mechanism 130 is connected with the setting roller mechanism 140 through a second channel 160, the stretching roller mechanism 130 is used for rolling and extending the segment-shaped glass blank to form an intermediate bar, and the intermediate bar can roll into the setting roller mechanism 140 through the second channel 160 under the action of gravity. The shaping roller mechanism 140 is used for rolling and shaping the intermediate rod material to form an optical glass rod material and realize the discharge of the optical glass rod material.
In this embodiment, the first channel 150 and the second channel 160 are both block-shaped structures that are obliquely arranged. One end of the first channel 150 is connected to the outlet of the heating furnace 120, and the other end is disposed above the drawing roller mechanism 130, and the softened glass sheet in the form of a segment output from the outlet of the heating furnace 120 is disposed horizontally and rolls downward along the first channel 150 under the action of gravity until falling into the drawing roller mechanism 130. One end of the second channel 160 is disposed below the stretching roller mechanism 130, and the other end is disposed above the shaping roller mechanism 140, and the intermediate bar output from the stretching roller mechanism 130 is transversely disposed and rolls downward along the second channel 160 under the action of gravity until falling into the shaping roller mechanism 140.
The stretching roller mechanism 130 includes a first stationary roller 131, a first movable roller 132, a second movable roller 133, a first driving member (not shown), and a second driving member (not shown). Wherein, the first static roller 131, the first movable roller 132 and the second movable roller 133 are arranged in parallel in pairs and combined to form a triangle. The first stationary roller 131 is mounted on the frame 110 and can rotate relative to the frame 110, and the frame 110 can limit the first stationary roller 131 to prevent the first stationary roller 131 from displacing. The first driving element is installed on the frame 110 and connected to the first movable roller 132, the first driving element can drive the first movable roller 132 to move, and the first movable roller 132 can rotate. The second driving element is installed on the frame 110 and connected to the second movable roller 133, the second driving element can drive the second movable roller 133 to displace, and the second movable roller 133 can rotate.
It is noted that the first stationary roller 131 and the first movable roller 132 are disposed at intervals, and the axis of the first stationary roller 131 and the axis of the first movable roller 132 are located on the same horizontal plane. A rolling space 134 for accommodating the segment-shaped glass blank is formed between the first static roller 131 and the first movable roller 132, and the softened segment-shaped glass blank can roll into the rolling space 134 through the first channel 150. The distance between the first stationary roller 131 and the first movable roller 132 is smaller than the diameter of the circumscribed circle of the segment glass blank to prevent the segment glass blank from leaking out of the draw roller mechanism 130.
In this embodiment, the second movable rollers 133 are disposed above the rolling space 134, and the axis of the second movable rollers 133 is located in the middle of the axes of the first stationary rollers 131 and the first movable rollers 132. The second driving member is used for driving the second movable roller 133 to extend into the rolling space 134, so as to press and hold the segment-shaped glass blank between the first static roller 131 and the first movable roller 132. The first static roller 131, the first movable roller 132 and the second movable roller 133 are used for rotating in the same direction so as to roll and elongate the sectional glass blank to form an intermediate bar. The first driving member is used for driving the first movable roller 132 to be away from the first static roller 131, so that the distance between the first movable roller 132 and the first static roller 131 is larger than the diameter of the middle bar stock, the middle bar stock can drop downwards, and the middle bar stock can roll to the sizing roller mechanism 140 through the second channel 160.
Specifically, heating members (not shown) are arranged in the first static roller 131, the first movable roller 132 and the second movable roller 133, and the heating members can raise the surface temperature of the first static roller 131, the first movable roller 132 and the second movable roller 133, so that the first static roller 131, the first movable roller 132 and the second movable roller 133 can transfer enough heat to the segment-shaped glass blank, and the segment-shaped glass blank can be guaranteed to be deformed through hot working to form the intermediate bar.
The setting roller mechanism 140 includes a second stationary roller 141, a third movable roller 142, and a third driving member (not shown). The second stationary roller 141 is mounted on the frame 110 and can rotate relative to the frame 110, and the frame 110 can limit the second stationary roller 141 to prevent the second stationary roller 141 from displacing. The third driving member is installed on the frame 110 and connected to the third movable roller 142, the third driving member can drive the third movable roller 142 to move, and the third movable roller 142 can rotate.
In this embodiment, the second stationary roller 141 and the third movable roller 142 are disposed at an interval, and the axis of the second stationary roller 141 and the axis of the third movable roller 142 are located on the same horizontal plane. A shaping space 143 for accommodating the intermediate bar is formed between the second stationary roller 141 and the third movable roller 142, and the intermediate bar can roll into the shaping space 143 through the second passage 160. The distance between the second stationary roller 141 and the third movable roller 142 is smaller than the diameter of the intermediate bar to prevent the intermediate bar from leaking out of the sizing roller mechanism 140. The second static roller 141 and the third movable roller 142 are used for rotating in the same direction to roll and shape the intermediate rod to form the optical glass rod. The third driving element is used for driving the third movable roller 142 to be far away from the second static roller 141, so that the distance between the third movable roller 142 and the second static roller 141 is larger than the diameter of the optical glass rod, and the optical glass rod can drop downwards to discharge.
Specifically, heating members are arranged in the third movable roller 142 and the second static roller 141, and the heating members can raise the surface temperature of the third movable roller 142 and the second static roller 141, so that the third movable roller 142 and the second static roller 141 can transfer enough heat to the intermediate bar material, and the intermediate bar material can be shaped to form the optical glass bar material.
It should be noted that the optical glass rod thermoforming device 100 further includes a third channel 170, and the third channel 170 is a block-shaped structure that is obliquely arranged. The number of the sizing roller mechanisms 140 is two, two sizing roller mechanisms 140 are both mounted on the frame 110, one sizing roller mechanism 140 is disposed above the other sizing roller mechanism 140, and the two sizing roller mechanisms 140 are connected through a third channel 170. Specifically, the stretching roller mechanism 130 is connected with a first shaping roller mechanism 140 through a second channel 160, the first shaping roller mechanism 140 is connected with a second shaping roller mechanism 140 through a third channel 170, the first shaping roller mechanism 140 is used for primarily shaping the middle bar stock to form a pre-shaped bar stock, the pre-shaped bar stock can roll into the second shaping roller mechanism 140 through the third channel 170 under the action of gravity, and the second shaping roller mechanism 140 is used for secondarily shaping the pre-shaped bar stock to form an optical glass bar stock and realize the discharge of the optical glass bar stock.
The optical glass rod hot forming apparatus 100 further includes a cutting machine (not shown), a vibration mill (not shown), and an annealing furnace (not shown). The cutting machine is used for cutting the block glass blank into a section-shaped glass blank, the vibration grinding machine is used for grinding the surface of the section-shaped glass blank, and the annealing furnace is used for annealing the optical glass bar.
The embodiment of the invention also provides a hot forming process of the optical glass bar, which comprises the following steps:
step S110: the block-shaped glass blank is cut to prepare a segment-shaped glass blank.
Specifically, step S110 includes two steps, which are respectively:
step S111: cutting the block-shaped glass blank into strip-shaped glass blanks by using a cutting machine.
It should be noted that, in step S111, according to actual product requirements, the cutting machine is used to cut the block-shaped glass blank into a plurality of strip-shaped glass blanks, each strip-shaped glass blank has a rectangular cross section, and the cross sections of the strip-shaped glass blanks are ensured to be the same as much as possible by scribing, so as to facilitate subsequent processing.
Step S112: and cutting the strip-shaped glass blank into sections to form the section-shaped glass blank.
In step S111, according to actual product requirements, the cutting machine is used to cut the strip-shaped glass blank into a plurality of segment-shaped glass blanks, each segment-shaped glass blank has a rectangular cross section, and the lengths of the plurality of segment-shaped glass blanks are ensured to be the same as much as possible, so as to facilitate subsequent processing.
In this embodiment, the length of the segment glass blank is 75 mm, but the length is not limited thereto, and in other embodiments, the length of the segment glass blank may be 70 mm or 80 mm, and the length of the segment glass blank is not particularly limited.
Step S120: and sorting the section-shaped glass blanks meeting the conditions.
In step S120, the volume and/or the weight of the glass segment are measured, and sorted according to the volume and/or the weight of the glass segment, and the glass segment with the volume and/or the weight meeting the conditions is selected for subsequent processing.
Step S130: the surface of the segment-shaped glass blank is ground by a vibration grinder.
In step S130, the frosted stone medium and the segment glass blank are put into a vibration grinder together, and the surface of the segment glass blank is ground by the vibration grinder, so as to improve the consistency of the weight of the segment glass blank and the surface roughness of the segment glass blank, so that the surface roughness of the segment glass blank meets the requirement, and the segment glass blank is conveniently subjected to later hot forming.
Step S140: heating and softening the segment-shaped glass blank.
In step S140, the glass segment having the desired surface roughness is placed in the heating furnace 120, heated and softened by the heating furnace 120, and when the glass segment is heated and softened to a certain degree, the robot arm of the heating furnace 120 sends the glass segment out of the outlet of the heating furnace 120 so that the glass segment rolls down along the first path 150 until the glass segment falls into the drawing roller mechanism 130.
Step S150: and rolling and extending the segment-shaped glass blank to form an intermediate bar stock.
In step S150, first, the glass material in a segment shape is rolled into the rolling space 134; then the second driving element drives the second movable roller 133 to descend and extend into the rolling space 134, the second movable roller 133 pushes the section-shaped glass blank to continuously approach the first fixed roller 131 and the first movable roller 132, and in the process, the first fixed roller 131, the first movable roller 132 and the second movable roller 133 rotate in the same direction to roll the section-shaped glass blank so that the section-shaped glass blank is deformed into a middle bar with a smaller diameter; then the second driving member drives the second movable roller 133 to ascend and exit the rolling space 134 so as to realize abdicating action, so that the next section of glass blank can be conveniently rolled into the rolling space 134; then the first driving member drives the first movable roller 132 to be far away from the first static roller 131, so that the distance between the first movable roller 132 and the first static roller 131 is larger than the diameter of the middle bar stock, and the middle bar stock falls downwards and rolls downwards to the sizing roller mechanism 140 along the second channel 160; then the first driving member drives the first movable roller 132 to be close to the first stationary roller 131, so as to realize the reset action, and facilitate the support and the limit of the next segment-shaped glass blank rolled into the rolling space 134. Thus, a circulation is formed, a plurality of section-shaped glass blanks can be continuously rolled and prolonged to form a plurality of intermediate bars, and the production efficiency is high.
Step S160: and rolling and shaping the intermediate bar stock to form the optical glass bar stock.
Specifically, step S160 includes two steps, which are respectively:
step S161: and carrying out primary shaping on the intermediate bar stock to form a pre-shaped bar stock.
In step S161, the intermediate bar stock is first rolled into the shaping space 143 of the first shaping roller mechanism 140; then the second static roller 141 and the third movable roller 142 rotate in the same direction to preliminarily shape the middle bar to form a pre-shaped bar; then the third driving element drives the third movable roller 142 to be far away from the second fixed roller 141, so that the distance between the third movable roller 142 and the second fixed roller 141 is larger than the diameter of the pre-shaped bar, and the pre-shaped bar falls downwards and rolls downwards to the second shaping space 143 along the third channel 170; then the third driving element drives the third movable roller 142 to approach the second stationary roller 141, so as to realize the resetting action, and facilitate the supporting and limiting of the next intermediate bar rolled into the shaping space 143. So form a circulation, can carry out preliminary design to a plurality of intermediate bars constantly, form a plurality of preshaped bar stocks, production efficiency is high.
Step S162: and carrying out secondary shaping on the pre-shaped bar stock to form the optical glass bar stock.
Similarly, in step S162, the pre-shaped bar is first rolled into the shaping space 143 of the second shaping roller mechanism 140; then the second static roller 141 and the third movable roller 142 rotate in the same direction to carry out secondary shaping on the pre-shaped bar stock to form an optical glass bar stock; then the third driving element drives the third moving roller 142 to be far away from the second static roller 141, so that the distance between the third moving roller 142 and the second static roller 141 is larger than the diameter of the optical glass bar, the optical glass bar falls downwards, and the discharging action is realized; then the third driving element drives the third movable roller 142 to approach the second stationary roller 141, so as to realize the reset action, which is convenient for supporting and limiting the next pre-shaped bar rolled into the shaping space 143. So form a circulation, can carry out the secondary design to a plurality of preshaped bar stocks constantly, form a plurality of optical glass bar stocks, production efficiency is high.
In this embodiment, the step S161 and the step S162 are performed continuously, that is, the intermediate rod material is rolled and shaped twice continuously to form a finished optical glass rod material, so as to ensure the stability and reliability of the shaping process.
Step S170: and annealing the optical glass bar by using an annealing furnace.
It should be noted that, in step S170, the annealing furnace is a precision annealing furnace, and the annealing temperature of the annealing furnace is controlled to range from 400 ℃ to 900 ℃ to ensure that the refractive index and other optical parameters of the optical glass rod meet the requirements, thereby forming the optical-grade rod. In this embodiment, the annealing temperature of the annealing furnace is 600 degrees celsius, but is not limited thereto, and in other embodiments, the annealing temperature of the annealing furnace may be 400 degrees celsius or 900 degrees celsius, and the annealing temperature of the annealing furnace is not particularly limited.
The optical glass bar hot forming process provided by the embodiment of the invention comprises the following steps of firstly heating and softening a segment-shaped glass blank; then, rolling and extending the segment-shaped glass blank to form an intermediate bar stock; and then rolling and shaping the intermediate bar stock to form the optical glass bar stock. Compared with the prior art, the hot forming process for the optical glass bar provided by the invention adopts the step of rolling and extending the segment-shaped glass blank to form the intermediate bar, so that the hot forming of the optical glass bar can be realized, the material waste is avoided, the production cost is saved, the glass slurry is avoided, and the hot forming process is practical, environment-friendly and suitable for batch production. The optical glass bar hot forming device 100 is energy-saving, environment-friendly, practical and reliable.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A hot forming process for an optical glass rod material is characterized by comprising the following steps:
heating and softening the sectional glass blank;
rolling and extending the segment-shaped glass blank to form an intermediate bar;
and rolling and shaping the intermediate bar stock to form the optical glass bar stock.
2. The optical glass bar stock thermoforming process of claim 1, wherein prior to the step of heat softening the segmented glass blank, the optical glass bar stock thermoforming process further comprises:
cutting the block-shaped glass blank to prepare the segment-shaped glass blank;
sorting the section-shaped glass blanks meeting the conditions;
and grinding the surface of the segment-shaped glass blank by using a vibration grinding machine.
3. The optical glass bar thermoforming process of claim 2, wherein the step of cutting a block glass blank to prepare the segment glass blank comprises:
cutting the block-shaped glass blank into strip-shaped glass blanks by using a cutting machine;
and cutting the strip-shaped glass blank into sections to form the section-shaped glass blank.
4. The optical glass bar thermoforming process of claim 2, wherein the step of sorting the length of glass blank that meets the criteria comprises:
measuring the volume and/or weight of the length of glass stock and sorting according to the volume and/or weight of the length of glass stock.
5. The optical glass bar stock thermoforming process of claim 1, wherein the step of roll setting the intermediate bar stock to form an optical glass bar stock comprises:
preliminarily shaping the intermediate bar stock to form a pre-shaped bar stock;
and carrying out secondary shaping on the pre-shaped bar stock to form the optical glass bar stock.
6. The optical glass bar stock thermoforming process of claim 1, wherein after the step of roll setting the intermediate bar stock to form an optical glass bar stock, the optical glass bar stock thermoforming process further comprises:
and annealing the optical glass bar by using an annealing furnace.
7. The process of claim 6, wherein the step of annealing the optical glass rod using an annealing furnace comprises:
and controlling the annealing temperature range of the annealing furnace to be 400-900 ℃.
8. The utility model provides an optical glass bar hot forming device, its characterized in that includes the frame and installs heating furnace, stretch roller mechanism and the design roller mechanism in the frame, the exit position of heating furnace with the position of stretch roller mechanism is corresponding, the heating furnace is used for carrying out the heat softening to section form glass blank, stretch roller mechanism set up in the top of design roller mechanism, stretch roller mechanism be used for with section form glass blank roll-in extension to form middle bar, the design roller mechanism be used for with middle bar roll-in is stereotyped, in order to form optical glass bar.
9. The optical glass bar hot forming device according to claim 8, wherein the drawing roller mechanism includes a first stationary roller, a first movable roller, a second movable roller, a first driving member and a second driving member, the first stationary roller, the first movable roller and the second movable roller are arranged in parallel, the first stationary roller is mounted on the frame and can rotate relative to the frame, the first driving member is mounted on the frame and connected with the first movable roller, the second driving member is mounted on the frame and connected with the second movable roller, the axis of the first stationary roller and the axis of the first movable roller are located on the same horizontal plane, a rolling space for accommodating the glass blank is formed between the first stationary roller and the first movable roller, and the second movable roller is disposed above the rolling space, the second driving piece is used for driving the second moves the roller and stretches into the roll-in space, with will section form glass blank press hold in first quiet roller with between the first roller of moving, first quiet roller first move the roller with the second is moved the roller and is used for taking place the syntropy and rotates, in order with section form glass blank roll-in extension forms middle bar, first driving piece is used for driving first moves the roller and keeps away from first quiet roller, so that middle bar falls into downwards design roller mechanism.
10. The optical glass bar thermoforming device of claim 8, the shaping roller mechanism comprises a second static roller, a third movable roller and a third driving piece, the second static roller is arranged on the rack, and can rotate relative to the frame, the third driving piece is arranged on the frame and is connected with the third movable roller, the axis of the second static roller and the axis of the third movable roller are positioned on the same horizontal plane, a shaping space for containing the middle bar is formed between the second static roller and the third movable roller, the second static roller and the third movable roller are used for rotating in the same direction, and the third driving piece is used for driving the third movable roller to be away from the second static roller so as to enable the optical glass bar to be discharged downwards.
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