CN113511801A - Blow molding method for producing high borosilicate glass - Google Patents
Blow molding method for producing high borosilicate glass Download PDFInfo
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- CN113511801A CN113511801A CN202110853893.4A CN202110853893A CN113511801A CN 113511801 A CN113511801 A CN 113511801A CN 202110853893 A CN202110853893 A CN 202110853893A CN 113511801 A CN113511801 A CN 113511801A
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- 238000000071 blow moulding Methods 0.000 title claims abstract description 26
- 239000005388 borosilicate glass Substances 0.000 title claims abstract description 11
- 239000011521 glass Substances 0.000 claims abstract description 82
- 238000000034 method Methods 0.000 claims abstract description 69
- 238000007664 blowing Methods 0.000 claims abstract description 67
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- 238000009826 distribution Methods 0.000 claims abstract description 8
- 230000008569 process Effects 0.000 claims description 31
- 238000001816 cooling Methods 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 17
- 238000003303 reheating Methods 0.000 claims description 15
- 238000007666 vacuum forming Methods 0.000 claims description 13
- 238000004080 punching Methods 0.000 claims description 12
- 238000007514 turning Methods 0.000 claims description 12
- 230000009471 action Effects 0.000 claims description 10
- 230000007246 mechanism Effects 0.000 claims description 7
- 230000000284 resting effect Effects 0.000 claims description 7
- 230000009286 beneficial effect Effects 0.000 claims description 6
- 230000007306 turnover Effects 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 3
- 239000000779 smoke Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 238000007493 shaping process Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 3
- 206010039509 Scab Diseases 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000037303 wrinkles Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B9/00—Blowing glass; Production of hollow glass articles
- C03B9/13—Blowing glass; Production of hollow glass articles in gob feeder machines
- C03B9/14—Blowing glass; Production of hollow glass articles in gob feeder machines in "blow" machines or in "blow-and-blow" machines
- C03B9/16—Blowing glass; Production of hollow glass articles in gob feeder machines in "blow" machines or in "blow-and-blow" machines in machines with turn-over moulds
Abstract
The invention discloses a blow molding method based on high borosilicate glass production, which comprises a blow-blowing method and a pressing-blowing method, wherein the blow-blowing method of the blow molding method comprises the following specific steps of S1-1: the falling glass gob falls into the inverted blank die through the distribution spoon, the straight trough, the steering trough and the funnel, and the glass gob uniformly sinks into the blank die. The core is inserted into the mouth mold before blanking, and the head of the gob falls into the mouth mold of the bottle before air blowing. The invention is suitable for the determinant bottle-making machine, the bottle-making machine can produce a wide range of products, and the bottle-making machine has two production processes of a blowing-blowing method and a pressing-blowing method. Has good adaptability and flexibility for producing different products.
Description
Technical Field
The invention relates to the technical field of high borosilicate glass, in particular to a blow molding method for producing high borosilicate glass.
Background
High borosilicate glass (hard glass) is special glass which is high temperature resistant and has low expansion coefficient. The glass is a special glass material with low expansion rate, high temperature resistance, high strength, high hardness, high light transmittance and high chemical stability, and is widely applied to the industries of solar energy, chemical engineering, medical packaging, electric light sources, craft ornaments and the like due to the excellent performance of the glass material.
Many prior art bottles are blown manually to manufacture hollow glass products such as cups, utensils, bottles, cans, bulbs and the like, and when blown manually, a hollow iron blow pipe with the length of about 1.5m is used, one end of the hollow iron blow pipe is dipped in glass liquid (picking material), and the other end of the hollow iron blow pipe is a blow nozzle. After the material is picked, the material is rolled uniformly on a material rolling plate (bowl) and blown to form glass material bubbles, and the glass material bubbles are blown into a product in a mould; the blow molding machine can also be used for free blow molding without a mold and finally knocking off from a blow pipe, the cheek sides of a plurality of staff are abnormal due to long-term blow molding, the blow molding efficiency is general, and the bottle body is prepared completely through manual experience, so that the scale production is not facilitated.
The existing bottle blowing equipment is limited to an independent blow molding mode, which is not beneficial to blow molding of different bottle types on a production line, and a lot of equipment can influence the production process because of specification change and maintenance, and is not beneficial to production and use of glass bottles.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a blow molding method for producing high borosilicate glass.
The invention provides a blow molding method for producing high borosilicate glass, which comprises a blow-blowing method and a pressing-blowing method, wherein the blow-blowing method of the blow molding method comprises the following specific steps:
s1-1: the falling glass gob falls into the inverted blank die through the distribution spoon, the straight trough, the steering trough and the funnel, and the glass gob uniformly sinks into the blank die. Before blanking, the core is inserted into the mouth mold, and before air blowing, the head of the gob almost completely falls into the mouth mold part of the bottle;
s1-2: the vacuum assistance starts when the glass gob falls into the blank mold, wherein the starting time of the vacuum assistance is slightly earlier than the gas extinguishing, the ending time is almost the same as the gas extinguishing, and the vacuum assistance is used for absorbing and removing air and oil smoke stored in the blank mold and is beneficial to forming a bottle opening;
s1-3: blowing a glass gob into a preform 'blank' in a preform mold, the process of which is as follows: after the air is extinguished, the choke plug is removed, the funnel is immediately removed, the choke plug enters and presses the blank mold again, the choke plug and the blank mold are matched to play a sealing role at the moment, meanwhile, the core descends to enable the glass in the bottle mouth to be reheated, the glass originally in contact with the core is softened, and air is blown into the glass through the small hole in the core;
s1-4: after the blank mould is opened, the mouth clamp is driven by the turnover mechanism to rotate 180 degrees in a vertical plane, and the glass blank prototype is turned over from the blank mould to the forming mould, so that the glass blank prototype is finally formed into a glass bottle product in the forming mould;
s1-5: finally, the bottle mouth is correctly aligned through the bottle clamp, the glass bottle is clamped to be above a resting plate of the bottle conveying machine, then the glass bottle is loosened to be cooled on the resting plate, and then the bottle is stirred onto a moving net belt of the bottle conveying machine through the bottle stirring device.
The blow molding method comprises the following specific steps:
s2-1: the blanking process is the same as that of the blowing-blowing method, but when the pressing-blowing method is used for forming, the punch is lifted to the receiving position in the blank die;
s2-2: when the punch is located at the receiving position, the gob falls into the blank die through a funnel, then the funnel is immediately moved away from the upper part of the blank die, the choke plug immediately enters the upper part of the blank die, the process is filling, and after the cavity of the blank die is sealed, the punch immediately rises to start the punching action and rises to the punching position. Completing the punching when the glass material blank still keeps the maximum heat;
s2-3: after the blank die is turned over and opened, the mouth clamp is driven by the turning mechanism to rotate 180 degrees in a vertical plane, and the blank is turned into the forming die from the blank die;
s2-4: reheating forming process, which is the time from pressing blank prototype, opening the prototype mold, turning over to the time before positive blowing, during which the blank prototype does not contact with forming metal (except at the bottle mouth), reheating or temperature homogenizing can be continuously carried out to make the inner and outer temperature of the glass blank uniform and eliminate 'hard skin';
s2-5: after vacuum forming and internal cooling positive blowing forming die are closed, the mouth-opening pliers are opened, the preform of blank is fallen into the correct position of forming die, the mouth-opening pliers and mouth-opening die are returned to their original position under the preform die, finally the bottle mouth is correctly aligned by means of bottle gripper, and a certain gap is formed between the mouth-opening pliers and diameter of mouth-opening pliers, so that the bottle can be freely hung on the gripper, the gripper is discharged to the upper portion of stopping plate of bottle-conveying machine, then the glass bottle is released and cooled on the stopping plate, then the bottle-pulling device can be used for pulling the bottle onto the moving net belt of bottle-conveying machine.
In a further aspect of the present invention, the blow molding method for producing borosilicate glass uses a blow-blow method and a pressure-blow method depending on the size of the inside and outside diameter of a blow molded bottle, wherein the blow molded bottle has a small volume and a thin wall body and is blow molded by the blow-blow method, and the blow molded bottle has a large volume and a thick wall body and is blow molded by the pressure-blow method.
The beneficial effects of the invention are as follows:
1. the blow molding shaping method is suitable for the determinant bottle making machine, the bottle making machine can produce a wide range of products, and the blow molding shaping method comprises two production processes of a blow-blow method and a pressure-blow method. The method has good adaptability and flexibility to different products;
2. the bottle-making equipment suitable for the blow molding shaping method adopts completely independent timing control for each group section, and can be independently started and stopped to replace the mold and maintain the machine without influencing the production operation of other groups sections or the whole machine.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
A blow molding method based on high borosilicate glass production comprises a blow-blowing method and a pressing-blowing method, wherein the blow-blowing method of the blow molding method comprises the following steps: blanking, vacuum assistance and air blowing, inverted air blowing, overturning, reheating, vacuum forming, internal cooling and positive air blowing and bottle clamping.
The specific working principle of each process is as follows:
1. discharging
The falling glass gob passes through a distribution spoon, a straight trough, a turning trough and a funnel and falls into an inverted parison mold. Generally, a gap of about 0.8 mm is kept between the diameter of the gob and the upper part of the inner cavity of the blank die, so that smooth and accurate blanking can be obtained, and the scratch of the glass gob is minimized. Between the upper part of the cavity of the blank mold and the falling gob, there is a sufficiently large vent gap to minimize the unwanted air under the gob. Smooth and accurate blanking can ensure that glass gob can be uniformly sunk into the blank die. The core is inserted into the mouth mold before blanking, and the head of the gob falls into the mouth mold of the bottle before air blowing.
The main points of the blanking process: in order to ensure smooth and accurate blanking, the material spoon, the straight material channel, the steering groove, the funnel, the blank die and the neck die of the distributor are well aligned. The necessary lubricating coating is coated on the material spoon, the straight material channel and the steering groove. The core and sleeve, and the core and neck mold, guide ring gap, should be processed according to the I/S bottle-making machine mold data manual recommended value. The parts and dies must be kept clean to prevent the pores from being clogged by dust.
2. Vacuum assist
Vacuum assist should be initiated immediately if vacuum assist is used as the glass gob falls into the blank mold. The vacuum assist starts slightly earlier than the puff and ends at almost the same time as the puff. The vacuum auxiliary is used for assisting the glass gob to easily enter the blank mould and be positioned in the center of the upper top of the core in the neck mould, and simultaneously, the air and the oil smoke stored in the blank mould are sucked and removed, thereby being beneficial to forming a bottle mouth. (vacuum assistance is mostly used for producing special-shaped and long-neck bottle openings) when the gob falls into the blank mould, the gas should be rapidly extinguished. Therefore, the glass can be contacted with the neck mold as soon as possible to ensure that the bottle mouth is well formed. The duration of the air-entrapping is preferably short, depending on the type of bottle mouth, the time for forming a large and heavy bottle mouth is longer than that for forming a small bottle mouth, the shortest air-entrapping time enables the bottle body to be uniform, and air-entrapping wrinkles are minimized.
3. Air puff
The key points of the gas extinguishing process are as follows: the air-entrapping time and the air-entrapping pressure are preferably short.
The step of inverted blowing is to blow the glass gob into a preform in a preform mold, and the process is as follows: after the air is closed, the choke plug is removed, the funnel is immediately removed, and the choke plug enters again and is pressed on the primary die. At the moment, the choke plug is matched with the blank die to play a sealing role. At the same time, the core descends, so that the glass in the bottle mouth is reheated, and the glass originally in contact with the core is softened. Blowing air into the glass through the small holes on the core. A uniform preform "parison" of material is formed.
The key points of the inverted blowing process are as follows: the earlier the reverse blow starts, the less the air-trapping wrinkles appear on the surface of the finally formed bottle, and the longer the reverse blow duration is, the better the balance of the heat dissipated between the blank mold and the forming mold is. Generally, the glass is maintained in contact with the blank mold for a maximum contact time, allowing for more stable operation, uniform glass distribution, and higher machine speeds. The pressure of the air blown down should be adapted to the size of the bottle, the larger the pressure should be. If necessary, after the primary mould is opened and before turning over, the reverse blowing is opened immediately, and then the blowing is performed briefly to blow the blank to blow up some of the blank. This helps to evenly distribute the glass of the bottle and prevents the defects of sticking inside the bottle due to the collapse of the preform. The large-size core is easy to overheat and adhere to hot glass in the operation process, and in order to avoid the phenomenon, inverted blowing can be immediately opened to cool the core after the parison is turned over. As needed, for a sufficient period of time. However, to prevent the formation of air "pockets" within the blank mold, the inverted blow air, which was previously used to cool the core, must be shut off before the next gob falls into the blank mold.
4. Roll-over
After the blank mould is opened, the mouth pliers are driven by the turnover mechanism to rotate 180 degrees in a vertical plane, and the glass blank is turned over from the blank mould to the forming mould, so that the glass blank is finally formed into a glass bottle product in the forming mould.
The key points of the turning process are as follows: the turnover speed can influence the glass distribution of the bottle wall, and if the turnover speed is too slow, the parison bends backwards and downwards under the action of gravity; if too fast, the embryonic form is inclined forward by the centrifugal force. The speed of inversion must therefore be adapted to the weight of the preform, the shape, the temperature of the glass, and the viscosity. And the turning motion must be adjusted smoothly.
5. Heavy heat
The reheating process refers to the period from the turning process of the blank mold to the forming mold after the blank mold is opened and before the vacuum forming and internal cooling of the positive blowing air. Because the preform does not contact the mold metal during this time, the surface of the preform is again heated, the temperature inside and outside the glass is homogenized, the "crust" is eliminated, and the preform is stretched in the mold by gravity. This is an important process necessary in the formation of glass bottles and cans.
The key points of the reheating process are as follows: excessive reheating in the blank mold will make the blank sink, and excessive reheating in the forming mold will make the blank continue to extend downwards, so that the reheating time should be properly regulated and controlled. Causing these two effects to cancel each other. The stretching and cooling of preform preforms can also be controlled by means of cooling at the top of the forming die.
6. Vacuum forming and internal cooling positive blowing
After vacuum forming and internal cooling positive blowing forming die are closed, the mouth tongs are opened, the blank parison falls into the correct position of the forming die, and the mouth tongs and the mouth die return to the original position below the parison die. The blank mold is closed and the next cycle is resumed. The blank embryonic form extends and swings to the bottom of the forming die under the action of gravity in the forming die. Because the blank has certain clearance with the blowing head on the mouth top surface, the blowing head applies compressed air and finally takes shape. When the blowing head moves to the top of the forming die, air is blown into the blank prototype through a cooling blow pipe of the blowing head, and air circulation is formed in the blank prototype. The hot gas is discharged through the exhaust holes of the blowing head, so that the temperature of the inner wall of the bottle is reduced. The vacuum auxiliary forming is mainly used for pumping air in the forming die to ensure that the glass is quickly and completely contacted with the inner wall of the forming die. Vacuum is also used as a cooling means to maximize internal heat transfer. Vacuum forming is an effective method for preventing the deformation of the bottle body and improving the machine speed, and is generally adopted by most foreign factories. However, the cost for processing the molds such as the forming mold and the mold bottom used in vacuum forming is high.
The main points of the positive blowing process are as follows: the positive blowing preform is formed into a glass bottle can. The heat is quickly dissipated from the inner surface and the outer surface of the bottle, and the glass is quickly and tightly contacted with the inner wall of the forming die, so that the bottle glass is quickly cooled, and the forming efficiency and the product quality can be improved. Generally, the vacuum and the positive blow should take the longest time during bottle formation.
After the air blowing of the bottle clamp is finished, the forming die is opened, the bottle clamp head immediately enters the upper portion of the forming die, the bottle clamp clamps the formed bottle, the bottle is lifted and clamped out to the upper portion of a stopping plate of the bottle conveying machine, and then the bottle clamp clamps are loosened and placed on the plate. The glass bottles are allowed to cool there and then are pulled by a bottle puller onto a moving conveyor web.
7. Clamp bottle
In the bottle clamping action, a bottle clamp is correctly aligned with a bottle opening, a certain gap is formed between a jaw and the diameter, so that a bottle can be freely hung on the clamp, and the bottle clamping mechanism is stable in action so as to avoid damaging a good product.
The purpose of cooling the bottles on the resting plate is to maintain the shape of the glass bottles. The stop plate is provided with a plurality of holes and grooves, so that cooling air can directly blow to the bottle bottom and the bottle side wall. When the bottles are suspended above the rest plate by the clamps, cooling air flows around the bottles above the rest plate, which is more effective. The difference in the pressure of the cooling air, the degree of softening of the bottom of the bottle, and the time the bottle is suspended above the resting plate may cause the bottom of the bottle to sag or bulge upward. The length of time that the bottles are cooled above the resting plate affects the capacity of the bottles and is therefore of particular concern.
The blow-blow method of the blow molding shaping method comprises the following steps: blanking, stamping, turning, reheating, vacuum forming, internal cooling and positive blowing and bottle clamping.
The specific working principle of each process is as follows: the difference of the forming process of the blowing-blowing operation production is that the vacuum auxiliary and air blowing process and the inverted blowing process are changed into a stamping process.
The specific working principle of each process is as follows:
1. discharging
The blanking process is the same as that of the blowing-blowing method, but when the pressing-blowing method is used for forming, the punch is lifted to the receiving position in the blank die. The blanking is correct, so that the material drops can uniformly and accurately fall to the top of the punch before the punching action.
2. Stamping
When the punch is in the receiving position, the gob falls into the blank die through a funnel, then the funnel is moved away from the upper part of the blank die, and the choke plug immediately enters the upper part of the blank die. This process is called priming. After the primary die cavity is sealed, the punch is immediately lifted to start the punching action. And lifting to the punching position. The press is completed while the glass gob still retains maximum heat. And after the glass blank is punched, extruding the glass blank into a mouth die to form a mouth part, and simultaneously extruding a blank prototype. At this time, the preform is held by the die and is in an inverted state. After the punching action is completed, the punch head is lowered to the lowest limit position, the choke plug is moved away, and the blank die is opened. The preforms were reheated and glass temperature homogenized. At the moment, the rudiment is blown by the reverse blowing, which is helpful for the even distribution of the glass and the deformation prevention of the rudiment.
The main points of the stamping process are as follows: the air pressure required for punching the punch upwards must be adjusted to a minimum, and the pressure generally used is about 1.26 kg/cm 2. Excessive pressure can cause cracks and marks in the mouth and the parison, and heat can accumulate in the upper portion of the punch. The temperature of the punch must not be too hot to affect the uniformity of the glass distribution. The punching time is increased as much as possible to increase the contact between the glass frit and the blank die punch, so that the effective heat dissipation is facilitated. To ensure the quality of the can, the temperature of the gob should be as low as possible. The material of the neck ring mold is very important, and the neck ring mold is easy to dissipate heat and not easy to deform, so that the temperature of the neck ring mold is uniform, and the neck ring mold is favorable for mouth part forming.
3. Roll-over
After the blank die is turned over and opened, the mouth clamp is driven by the turning mechanism to rotate 180 degrees in a vertical plane, and the blank is turned into the forming die from the blank die. Upon closing of the forming mold, the die is opened and the preform falls into the correct position within the forming mold. The die and the mouth tongs return to the original position below the blank die, the blank die is closed immediately, the punch rises to the receiving position again to be ready for receiving the next gob, and the working cycle of the blank die is restarted.
4. Heavy heat
And (3) reheating and forming, wherein the reheating and forming process is started by extruding the blank and opening the blank die, and the time is before turning over and blowing. During this period, the preform is not in contact with the forming metal (except at the neck area), and reheating or temperature homogenization can be continuously performed to make the internal and external temperatures of the preform glass uniform, eliminating "crusts". Excessive reheating causes the preform to sag in the preform and to be excessively extended in the mold. Therefore, these two effects should be made to cancel each other. Top cooling from above the mold can also be used to control preform cooling or stretching.
5. Vacuum forming and internal cooling positive blowing
After vacuum forming and internal cooling positive blowing forming die are closed, the mouth tongs are opened, the blank parison falls into the correct position of the forming die, and the mouth tongs and the mouth die return to the original position below the parison die. The blank mold is closed and the next cycle is resumed. The blank embryonic form extends and swings to the bottom of the forming die under the action of gravity in the forming die. Because the blank has certain clearance with the blowing head on the mouth top surface, the blowing head applies compressed air and finally takes shape. When the blowing head moves to the top of the forming die, air is blown into the blank prototype through a cooling blow pipe of the blowing head, and air circulation is formed in the blank prototype. The hot gas is discharged through the exhaust holes of the blowing head, so that the temperature of the inner wall of the bottle is reduced. The vacuum auxiliary forming is mainly used for pumping air in the forming die to ensure that the glass is quickly and completely contacted with the inner wall of the forming die. Vacuum is also used as a cooling means to maximize internal heat transfer. Vacuum forming is an effective method for preventing the deformation of the bottle body and improving the machine speed, and is generally adopted by most foreign factories. However, the cost for processing the molds such as the forming mold and the mold bottom used in vacuum forming is high.
The main points of the positive blowing process are as follows: the positive blowing preform is formed into a glass bottle can. The heat is quickly dissipated from the inner surface and the outer surface of the bottle, and the glass is quickly and tightly contacted with the inner wall of the forming die, so that the bottle glass is quickly cooled, and the forming efficiency and the product quality can be improved. Generally, the vacuum and the positive blow should take the longest time during bottle formation.
6. Clamp bottle
After the positive blowing of the bottle clamp is completed, the forming die is opened, the bottle clamp head immediately enters the upper part of the forming die, the bottle clamp clamps the formed bottle, the bottle is lifted and clamped out to the upper part of a stop plate of the bottle conveying machine, and then the bottle clamp clamps are loosened and placed on the plate. The glass bottles are allowed to cool there and then are pulled by a bottle puller onto a moving conveyor web.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (2)
1. A blow molding method based on high borosilicate glass production comprises a blow-blowing method and a pressing-blowing method, and is characterized in that the blow-blowing method of the blow molding method comprises the following specific steps:
s1-1: the falling glass gob falls into the inverted blank die through the distribution spoon, the straight trough, the steering trough and the funnel, and the glass gob uniformly sinks into the blank die. Before blanking, the core is inserted into the mouth mold, and before air blowing, the head of the gob almost completely falls into the mouth mold part of the bottle;
s1-2: the vacuum assistance starts when the glass gob falls into the blank mold, wherein the starting time of the vacuum assistance is slightly earlier than the gas extinguishing, the ending time is almost the same as the gas extinguishing, and the vacuum assistance is used for absorbing and removing air and oil smoke stored in the blank mold and is beneficial to forming a bottle opening;
s1-3: blowing a glass gob into a preform 'blank' in a preform mold, the process of which is as follows: after the air is extinguished, the choke plug is removed, the funnel is immediately removed, the choke plug enters and presses the blank mold again, the choke plug and the blank mold are matched to play a sealing role at the moment, meanwhile, the core descends to enable the glass in the bottle mouth to be reheated, the glass originally in contact with the core is softened, and air is blown into the glass through the small hole in the core;
s1-4: after the blank mould is opened, the mouth clamp is driven by the turnover mechanism to rotate 180 degrees in a vertical plane, and the glass blank prototype is turned over from the blank mould to the forming mould, so that the glass blank prototype is finally formed into a glass bottle product in the forming mould;
s1-5: finally, the bottle mouth is correctly aligned through the bottle clamp, the glass bottle is clamped to be above a resting plate of the bottle conveying machine, then the glass bottle is loosened to be cooled on the resting plate, and then the bottle is stirred onto a moving net belt of the bottle conveying machine through the bottle stirring device.
The blow molding method comprises the following specific steps:
s2-1: the blanking process is the same as that of the blowing-blowing method, but when the pressing-blowing method is used for forming, the punch is lifted to the receiving position in the blank die;
s2-2: when the punch is located at the receiving position, the gob falls into the blank die through a funnel, then the funnel is immediately moved away from the upper part of the blank die, the choke plug immediately enters the upper part of the blank die, the process is filling, and after the cavity of the blank die is sealed, the punch immediately rises to start the punching action and rises to the punching position. Completing the punching when the glass material blank still keeps the maximum heat;
s2-3: after the blank die is turned over and opened, the mouth clamp is driven by the turning mechanism to rotate 180 degrees in a vertical plane, and the blank is turned into the forming die from the blank die;
s2-4: reheating forming process, which is the time from pressing blank prototype, opening the prototype mold, turning over to the time before positive blowing, during which the blank prototype does not contact with forming metal (except at the bottle mouth), reheating or temperature homogenizing can be continuously carried out to make the inner and outer temperature of the glass blank uniform and eliminate 'hard skin';
s2-5: after vacuum forming and internal cooling positive blowing forming die are closed, the mouth-opening pliers are opened, the preform of blank is fallen into the correct position of forming die, the mouth-opening pliers and mouth-opening die are returned to their original position under the preform die, finally the bottle mouth is correctly aligned by means of bottle gripper, and a certain gap is formed between the mouth-opening pliers and diameter of mouth-opening pliers, so that the bottle can be freely hung on the gripper, the gripper is discharged to the upper portion of stopping plate of bottle-conveying machine, then the glass bottle is released and cooled on the stopping plate, then the bottle-pulling device can be used for pulling the bottle onto the moving net belt of bottle-conveying machine.
2. The blow molding method according to claim 1, wherein a blow-blow method and a press-blow method are used according to the inside and outside diameters of the blown bottle, the blown bottle is blow molded by the blow-blow method when the volume is small and the wall thickness is thin, and the blown bottle is blow molded by the press-blow method when the volume is large and the wall thickness is thick.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110853893.4A CN113511801A (en) | 2021-07-28 | 2021-07-28 | Blow molding method for producing high borosilicate glass |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110853893.4A CN113511801A (en) | 2021-07-28 | 2021-07-28 | Blow molding method for producing high borosilicate glass |
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| Publication Number | Publication Date |
|---|---|
| CN113511801A true CN113511801A (en) | 2021-10-19 |
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| CN202110853893.4A Pending CN113511801A (en) | 2021-07-28 | 2021-07-28 | Blow molding method for producing high borosilicate glass |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114105448A (en) * | 2021-12-23 | 2022-03-01 | 山东嘉丰玻璃机械有限公司 | High borosilicate glass bottle making machine and quick blowing method production process |
| CN114212971A (en) * | 2021-12-29 | 2022-03-22 | 广东华兴玻璃股份有限公司 | Blowing method of glass bottle |
| CN114212971B (en) * | 2021-12-29 | 2024-04-26 | 佛山华兴玻璃有限公司 | Blowing method for glass bottle |
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| CN114105448A (en) * | 2021-12-23 | 2022-03-01 | 山东嘉丰玻璃机械有限公司 | High borosilicate glass bottle making machine and quick blowing method production process |
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| CN114212971A (en) * | 2021-12-29 | 2022-03-22 | 广东华兴玻璃股份有限公司 | Blowing method of glass bottle |
| CN114212971B (en) * | 2021-12-29 | 2024-04-26 | 佛山华兴玻璃有限公司 | Blowing method for glass bottle |
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