Vacuum generating device for glass bottle production

Abstract

The invention relates to a vacuum generating device for glass bottle production, which relates to the technical field of glass bottle production and comprises a primary mold, a choke plug, a mouth mold, a base and a vacuum pump. By arranging a communicating structure of the vacuum pump, the exhaust pipe, the shunt pipe, the connecting pipe, the second exhaust passage, the first exhaust passage and the connecting passage, a stable negative pressure environment can be applied to frit in a bottle mouth cavity in the glass bottle production process, and the frit can be more tightly attached to the inner wall of the mouth mold in the forming stage through the negative pressure effect; and the structural density of the bottle opening part is enhanced, so that the mechanical strength of the bottle opening is effectively improved, the problem of damage caused by insufficient strength is reduced, the extreme requirement on the machining precision of a mouth mold is reduced, the manufacturing cost of the mold is remarkably reduced, and the restriction of high investment of a small-mouth pressing and blowing mold on cost reduction and efficiency improvement of the industry is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of glass bottle production, in particular to a vacuum generating device for glass bottle production. BACKGROUND

[0002] In the glass product industry, undoubtedly, the weight reduction process is the most operable cost reduction solution, which has a clear requirement that the product weight must be continuously reduced without changing the physical and chemical performance indicators of the product, so as to truly reduce the actual cost of the product.

[0003] At present, the glass product industry generally adopts small-mouth pressure blowing process to achieve product light weight, and then achieves the goal of reducing product cost. However, focusing on the light weight process of beer bottles, many process problems will be found, and the most prominent problem is that the bottle mouth structure is insufficient in strength, which directly leads to the decrease of the yield of products on the production line. In addition, it cannot be ignored that the investment cost of small-mouth pressure blowing mold is extremely high, which is even twice as much as that of traditional blowing process. This situation seriously restricts the process of cost reduction and efficiency improvement of the glass product industry, and makes the industry encounter great obstacles in the road of pursuing cost reduction and efficiency improvement. In order to solve the above problems, a vacuum generating device for glass bottle production is proposed. SUMMARY

[0004] 1. Technical problems solved The purpose of the present application is to provide a vacuum generating device for glass bottle production, which has the advantages of improving the strength of the beer bottle mouth structure, reducing the cost of mold investment, and solving the problems of low yield caused by insufficient strength of the beer bottle mouth structure in the light weight production of beer bottles, and high cost of small-mouth pressure blowing mold restricting the cost reduction and efficiency improvement of the industry in the prior art.

[0005] The vacuum generating device for glass bottle production provided by the present application adopts the following technical solution: The vacuum generating device comprises a preliminary mold, a plug, a mouth mold, a base and a vacuum pump, the number of the preliminary mold and the mouth mold is two, a bottle body cavity and a connecting cavity are arranged between the two preliminary molds, a bottle mouth cavity is arranged between the two mouth molds, the two mouth molds are in the connecting cavity, a base is arranged at the top of the base, the mouth mold is at the top of the base, and the plug is at the top of the bottle body cavity. The base is internally provided with a T-shaped groove, the top of the T-shaped groove is provided with a circular groove, the circular groove is arranged in the base, the bottom of the T-shaped groove is fixedly connected with a driving structure, the top of the driving structure is fixedly connected with a lifting rod, the lifting rod is slidably connected in the circular groove, the lifting rod is internally provided with an air cavity, the air cavity is fixedly connected with two fixed blocks, the two fixed blocks are fixedly connected with a connecting rod, the top of the connecting rod is fixedly connected with a core, the top of the core is slidably connected in the bottle mouth cavity, the two mouth molds are internally provided with the same structure, the mouth mold is internally provided with a second cavity, the top of the second cavity is provided with a second air inlet, the second air inlet is detachably connected with a second plug, the second plug is internally provided with a plurality of second air outlets, the side of the second cavity is provided with a connecting air duct, the base is internally provided with a first air duct, the lifting rod is internally provided with a second air duct, the connecting air duct, the first air duct and the second air duct are communicated, the side of the lifting rod is fixedly connected with a connecting pipe, one end of the connecting pipe is fixedly connected with a shunt pipe, the two ends of the shunt pipe are fixedly connected with an air exhaust pipe and an air inlet pipe, respectively, and the output end of the air exhaust pipe is fixedly connected with the input end of a vacuum pump. By adopting the above technical scheme, the communication structure of the vacuum pump, the air exhaust pipe, the shunt pipe, the connecting pipe, the second air duct, the first air duct and the connecting air duct can apply a stable negative pressure environment to the glass material in the bottle mouth cavity during the production of the glass bottle. When the molten glass material enters the bottle body cavity and the bottle mouth cavity, the vacuum pump is started, the second air duct in the shunt pipe, the connecting pipe and the lifting rod is exhausted to a negative pressure state through the air exhaust pipe, the negative pressure is transmitted to the second cavity of the mouth mold through the first air duct and the connecting air duct, and then the second air outlet of the second plug acts on the surface of the glass material in the bottle mouth cavity. This negative pressure effect can make the glass material more closely adhere to the inner wall of the mouth mold during the forming stage, thereby enhancing the structural density of the bottle mouth part, effectively improving the mechanical strength of the bottle mouth, reducing the damage caused by insufficient strength, reducing the extreme requirement for the processing precision of the mouth mold, significantly reducing the manufacturing cost of the mold, avoiding the restriction of high investment of the small mouth pressure blowing mold on the cost reduction and efficiency improvement of the industry, and further optimizing the production process.

[0006] Preferably, the connecting rod and the lifting rod are provided with an air inlet, the input end of the air inlet pipe is connected with an external air charging device, the surface of the air exhaust pipe is fixedly connected with a first electric control valve, and the surface of the air inlet pipe is fixedly connected with a second electric control valve. By adopting the technical scheme, through the cooperative structure of the air inlet channel, the air inlet pipe, the first electric control valve and the second electric control valve, the internal air pressure environment of the device can be accurately controlled, when negative pressure needs to be applied to the glass material in the bottle opening, the first electric control valve is opened and the second electric control valve is closed, and the vacuum pump can draw the related air channel to a negative pressure state through the air outlet pipe.

[0007] Preferably, the connection end of the connection air channel, the connection end of the first air outlet channel and the connection end of the second air outlet channel are all provided with flared structures. By adopting the technical scheme, through the flared structure, the sealing performance and airflow conduction efficiency of the connection parts of the air channels can be effectively improved, meanwhile, the flared structure can also reduce the local resistance of the airflow at the connection parts, avoid the vortex phenomenon caused by sudden change of the pipe diameter, and ensure that the airflow flows more smoothly between the air channels.

[0008] Preferably, the second plug is slidingly connected in the second cavity, a second limiting spring is fixedly connected to the bottom of the second plug, and the bottom end of the second limiting spring is fixedly connected to the inner bottom end of the second cavity. By adopting the technical scheme, through the cooperative structure of the second plug and the second limiting spring, the air pressure change in the second cavity can be quickly responded during the operation of the device, when the device is in a negative pressure state, the second plug slides downward under the pressure difference between the external atmospheric pressure and the internal negative pressure to overcome the spring force, thereby opening the passage of the second air channel, so that the negative pressure can effectively act on the glass bottle forming area, and when the device needs to switch to a positive pressure or normal pressure state, as the internal air pressure gradually rises, the reset force of the second limiting spring pushes the second plug to move upward until it tightly fits the inner wall of the second cavity, so that the second air channel can be sealed and blocked to prevent reverse leakage of the gas affecting the air pressure control accuracy.

[0009] Preferably, a first cavity is formed in the plug, a first air inlet and a first air outlet hole are respectively formed in the inner bottom end and the top end of the first cavity, a first plug is clamped in the first air inlet, a slide rod is fixedly connected to the top end of the first plug, the top end of the slide rod slidingly penetrates through the first air outlet hole, and a blocking plate is fixedly connected to the top end of the slide rod. By adopting the technical scheme, through the linkage structure of the first plug, the slide rod and the blocking plate, when the molten glass material is blown and shaped, the air between the molten glass material and the plug can be discharged through the first air inlet and the first air outlet hole.

[0010] Preferably, a first limiting spring is sleeved on the surface of the slide rod, and the two ends of the first limiting spring are respectively fixedly connected to the top of the first plug and the inner top end of the first cavity. By adopting the technical scheme, the first plug is pushed to move downward by the reset elastic force of the first limiting spring after the exhaust is completed, so as to tightly adhere to the inner wall of the first air inlet, thereby realizing the automatic sealing of the first air inlet, avoiding the leakage of the gas through the first air inlet in the subsequent air pressure regulation process, and thus the air pressure stability of the vacuum generating device when the glass bottle is blow molded can be ensured.

[0011] Preferably, each of the two primary molds is internally provided with a plurality of air holes and heat preservation holes, the plurality of heat preservation holes are arranged in two rows and symmetrically arranged in the primary mold; By adopting the technical scheme, the air holes can balance the air pressure inside and outside the primary mold during the blow molding process, and the irregular shaping of the molten glass material due to the air pressure difference can be avoided. Meanwhile, the heat preservation holes are filled with heat preservation materials, which can effectively reduce the heat loss of the primary mold when it contacts the molten glass material, and can maintain the stability of the internal temperature of the primary mold.

[0012] Preferably, one of the primary molds is provided with a groove on the side surface, and the other primary mold is provided with a protrusion on the side surface, and the protrusion is clamped in the groove. By adopting the technical scheme, the clamping structure of the groove and the protrusion can realize accurate positioning when the two primary molds are combined, and the tightness of the butt joint between the primary molds can be ensured, so that the molten glass material can be prevented from overflowing from the gap due to the misalignment of the combined molds, thereby improving the integrity and size accuracy of the glass bottle forming.

[0013] 2. Beneficial effects In summary, the present application has at least one of the following beneficial technical effects: 1. The invention provides a vacuum generating device for glass bottle production, by setting the communication structure of the vacuum pump, air exhaust pipe, shunt pipe, connecting pipe, second air exhaust, first air exhaust and connecting airway, a stable negative pressure environment can be applied to the glass material in the bottle mouth cavity during the glass bottle production process. When the molten glass material enters the bottle body cavity and the bottle mouth cavity, the vacuum pump starts, and the second air exhaust in the shunt pipe, connecting pipe and lifting rod is extracted to a negative pressure state through the air exhaust pipe. The negative pressure is transmitted to the second cavity of the mouth die through the first air exhaust and the connecting airway, and then acts on the surface of the glass material in the bottle mouth cavity through the second air outlet hole of the second plug. This negative pressure effect can make the glass material more closely adhere to the inner wall of the mouth die during the forming stage, enhance the structural density of the bottle mouth part, effectively improve the mechanical strength of the bottle mouth, reduce the damage problem caused by insufficient strength, reduce the extreme requirement for the processing precision of the mouth die, reduce the cost of mold manufacturing, avoid the restriction of high investment of small mouth pressure blow mold on cost reduction and efficiency improvement of the industry. In addition, the lifting rod can slide up and down along the circular groove under the drive of the driving structure, drive the core to adjust the position in the bottle mouth cavity, cooperate with the dynamic change of the negative pressure environment, adapt to the production needs of different specifications of beer bottles, improve the versatility and production flexibility of the device, and further optimize the production process.

[0014] 2. The invention provides a vacuum generating device for glass bottle production, by setting the cooperation structure of the second plug and the second limit spring, the gas pressure change in the second cavity can be quickly responded during the operation of the device. When the device is in a negative pressure state, the second plug slides downward under the pressure difference between the external atmospheric pressure and the internal negative pressure to overcome the spring force, thereby opening the passage of the second airway, which can ensure that the negative pressure can effectively act on the glass bottle forming area. When the device needs to switch to a positive pressure or normal pressure state, as the internal gas pressure gradually rises, the reset force of the second limit spring pushes the second plug to move upward until it tightly adheres to the inner wall of the second cavity, which can realize the sealing and plugging of the second airway to prevent gas from leaking in the opposite direction and affecting the gas pressure control accuracy. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structure schematic view of the front view of the invention; Figure 2 is a structure schematic view of the initial die in the invention; Figure 3 is a structure schematic view of the mouth die in the invention; Figure 4 is a structure schematic view of the base in the invention; Figure 5 is a structure schematic view of the front view of the invention; Figure 6 is Figure 5 is an enlarged structure schematic view of A in the invention; Figure 7 For Figure 5 Structure diagram of the enlarged part at B.

[0016] 1, the first mold; 101, the groove; 102, the protrusion; 103, the air hole; 104, the heat preservation hole; 105, the bottle body cavity; 106, the connecting cavity; 2. The plug; 201, the first cavity; 202, the first air inlet; 203, the first air outlet; 204, the first plug; 205, the sliding rod; 206, the plug plate; 207, the first limit spring; 3. The mouth mold; 301, the bottle mouth cavity; 302, the second cavity; 303, the second air inlet; 304, the second plug; 305, the second limit spring; 306, the connecting airway; 307, the second air outlet; 4. The base; 401, the T-shaped groove; 402, the driving structure; 403, the lifting rod; 404, the air cavity; 405, the fixed block; 406, the connecting rod; 407, the core; 408, the air inlet; 409, the first air outlet; 4010, the second air outlet; 4011, the connecting pipe; 4012, the shunt pipe; 4013, the air pipe; 4014, the air inlet pipe; 4015, the first electric control valve; 4016, the second electric control valve; 4017, the base; 4018, the circular groove; 5. The flared part; 6. The vacuum pump. DETAILED DESCRIPTION

[0017] The following will be described in detail in combination with the accompanying drawings. Figure 1 The accompanying drawings are as follows: Figure 7 Further detailed description will be made to the present application.

[0018] Example 1: A vacuum generating device for glass bottle production, referring to Figure 1 , Figure 4 , Figure 5 and Figure 6 , including the first mold 1, the plug 2, the mouth mold 3, the base 4 and the vacuum pump 6, the number of the first mold 1 and the mouth mold 3 is two, the bottle body cavity 105 and the connecting cavity 106 are arranged between the two first molds 1, the bottle mouth cavity 301 is arranged between the two mouth molds 3, the two mouth molds 3 are in the connecting cavity 106, the base 4 is provided with the base 4017 at the top, the mouth mold 3 is at the top of the base 4017, and the plug 2 is at the top of the bottle body cavity 105; The base 4 is internally provided with a T-shaped groove 401, the top of the T-shaped groove 401 is provided with a circular groove 4018, the circular groove 4018 is arranged in the base 4017, the inside of the T-shaped groove 401 is fixedly connected with a driving structure 402 at the bottom end, the top end of the driving structure 402 is fixedly connected with a lifting rod 403, the lifting rod 403 is slidingly connected in the circular groove 4018, the inside of the lifting rod 403 is provided with an air cavity 404, the inside of the air cavity 404 is fixedly connected with two fixed blocks 405, the two fixed blocks 405 are fixedly connected with a connecting rod 406, the top end of the connecting rod 406 is fixedly connected with a core 407, the top end of the core 407 is slidingly connected in the bottle mouth cavity 301, the inside of the two mouth molds 3 is the same, the inside of the mouth mold 3 is provided with a second cavity 302, the top of the second cavity 302 is provided with a second air inlet 303, the inside of the second air inlet 303 is clamped with a second plug 304, the inside of the second plug 304 is provided with a plurality of second air outlets 307, the side of the second cavity 302 is provided with a connecting air channel 306, the inside of the base 4017 is provided with a first air extraction channel 409, the inside of the lifting rod 403 is provided with a second air extraction channel 4010, the connecting air channel 306, the first air extraction channel 409 and the second air extraction channel 4010 are communicated, the side of the lifting rod 403 is fixedly connected with a connecting pipe 4011, one end of the connecting pipe 4011 is fixedly connected with a shunt pipe 4012, the two ends of the shunt pipe 4012 are respectively fixedly connected with an air extraction pipe 4013 and an air inlet pipe 4014, the output end of the air extraction pipe 4013 is fixedly connected with the input end of a vacuum pump 6, through the communication structure of the vacuum pump 6 and the air extraction pipe 4013, the shunt pipe 4012, the connecting pipe 4011 and the second air extraction channel 4010, the first air extraction channel 409 and the connecting air channel 306, a stable negative pressure environment can be applied to the glass material in the bottle mouth cavity 301 in the glass bottle production process, when the molten glass enters the bottle body cavity 105 and the bottle mouth cavity 301, the vacuum pump 6 is started, the second air extraction channel 4010 in the shunt pipe 4012, the connecting pipe 4011 and the lifting rod 403 is extracted to a negative pressure state through the air extraction pipe 4013, the negative pressure is transmitted to the second cavity 302 of the mouth mold 3 through the first air extraction channel 409 and the connecting air channel 306, and then the glass material in the bottle mouth cavity 301 is acted on the surface of the glass material in the bottle mouth cavity 301 through the second air outlet 307 of the second plug 304, the negative pressure action can make the glass material more closely adhere to the inner wall of the mouth mold 3 in the forming stage, and the structure density of the bottle mouth part is enhanced, thereby effectively improving the mechanical strength of the bottle mouth, reducing the damage problem caused by insufficient strength, reducing the extreme requirement for the machining precision of the mouth mold 3, reducing the mold manufacturing cost, avoiding the restriction of high investment of small mouth pressure blow mold on cost reduction and efficiency improvement of the industry, in addition, the lifting rod 403 can slide up and down along the circular groove 4018 under the drive of the driving structure 402, the core 407 in the bottle mouth cavity 301 is adjusted in position, the dynamic change of the negative pressure environment can adapt to the production needs of different specifications of beer bottles, improve the versatility and production flexibility of the device, and further optimize the production process.

[0019] Please refer to Figure 1 、 Figure 5 and Figure 6 , the intake passage 408 is arranged between the connecting rod 406 and the lifting rod 403, the inlet end of the air inlet pipe 4014 is connected with the external air charging device, the surface of the air outlet pipe 4013 is fixedly connected with the first electric control valve 4015, the surface of the air inlet pipe 4014 is fixedly connected with the second electric control valve 4016, through the cooperative structure of the intake passage 408, the air inlet pipe 4014, the first electric control valve 4015 and the second electric control valve 4016, the internal air pressure environment of the device can be accurately controlled, when the negative pressure needs to be applied to the glass material in the bottle opening cavity 301, the first electric control valve 4015 is opened, the second electric control valve 4016 is closed, the vacuum pump 6 can draw the related air passage to the negative pressure state through the air outlet pipe 4013, the connection end of the connection air passage 306, the connection end of the first air outlet passage 409 and the connection end of the second air outlet passage 4010 are all provided with the flared portion 5, through the structure of the flared portion 5, the sealing performance and airflow conduction efficiency of the connection part of each air passage can be effectively improved, at the same time, the flared portion 5 structure can also reduce the local resistance of airflow at the connection part, avoid the vortex phenomenon caused by the sudden change of pipe diameter, ensure that the airflow flows more smoothly between each air passage, the second plug 304 is slidingly connected in the second cavity 302, the second plug 304 is fixedly connected with the second limiting spring 305 at the bottom, the bottom end of the second limiting spring 305 is fixedly connected to the inner bottom end of the second cavity 302, through the cooperative structure of the second plug 304 and the second limiting spring 305, the air pressure change in the second cavity 302 during the operation of the device can be quickly responded, when the device is in a negative pressure state, the second plug 304 slides downward under the pressure difference between the external atmospheric pressure and the internal negative pressure to overcome the spring force, thereby opening the passage of the second air passage, which can ensure that the negative pressure can effectively act on the glass bottle forming area, when the device needs to switch to a positive pressure or normal pressure state, with the gradual increase of the internal air pressure, the reset force of the second limiting spring 305 pushes the second plug 304 to move upward until it tightly fits the inner wall of the second cavity 302, the sealing of the second air passage can be realized, preventing the reverse leakage of gas affecting the air pressure control accuracy.

[0020] Please refer to Figure 7The first cavity 201 is internally provided with a first air inlet 202 and a first air outlet hole 203 at the bottom end and the top end, respectively. The first air inlet 202 is internally clamped with a first plug 204. The first plug 204 is fixedly connected with a sliding rod 205 at the top end. The sliding rod 205 is slidably connected with the first air outlet hole 203 at the top end and is fixedly connected with a plug plate 206. The linkage structure of the first plug 204, the sliding rod 205 and the plug plate 206 can exhaust the air between the molten glass material and the muff 2 through the first air inlet 202 and the first air outlet hole 203 during the blowing and shaping of the molten glass material. The first limiting spring 207 is sleeved on the surface of the sliding rod 205 and is fixedly connected at the top of the first plug 204 and the top end of the first cavity 201. The first limiting spring 207 can push the first plug 204 downward after the exhaust is completed to tightly fit the inner wall of the first air inlet 202, thereby achieving the automatic sealing of the first air inlet 202 and avoiding the leakage of the gas through the first air inlet 202 during the subsequent air pressure regulation process, so as to ensure the air pressure stability of the vacuum generating device during the blowing and shaping of the glass bottle.

[0021] Please refer to Figure 2 and Figure 5 The two primary molds 1 are internally provided with a plurality of air holes 103 and heat preservation holes 104. The plurality of heat preservation holes 104 are arranged in two rows and symmetrically arranged in the primary mold 1. The air holes 103 can balance the air pressure inside and outside the primary mold 1 during the blowing and shaping process, so as to avoid the irregular shaping of the molten glass material due to the air pressure difference. At the same time, the heat preservation holes 104 are filled with heat preservation materials, which can effectively reduce the heat loss of the primary mold 1 when it contacts with the molten glass material, thereby maintaining the stability of the internal temperature of the primary mold 1. One primary mold 1 is internally provided with a recess 101, and the other primary mold 1 is internally provided with a protrusion 102. The protrusion 102 is clamped in the recess 101. The clamping structure of the recess 101 and the protrusion 102 can realize accurate positioning when the two primary molds 1 are combined, so as to ensure the tightness of the butt joint between the primary molds 1 and avoid the overflow of the molten glass material from the gap due to the misalignment of the combined molds, thereby improving the integrity and size accuracy of the glass bottle forming.

[0022] The implementation principle of the embodiment of the application is as follows: in the glass bottle production process, two die heads 3 are combined on the top of the base 4017, and then two initial molds 1 are combined on the top of the die heads 3. After the combination is completed, the molten glass enters the bottle body cavity 105 of the initial mold 1, then the plug 2 moves downward to the top of the bottle body cavity 105 to block the top of the bottle body cavity 105, then the vacuum pump 6 is started, the first electric control valve 4015 is opened, the second electric control valve 4016 is closed, the second air extraction channel 4010, the first air extraction channel 409 and the connecting air channel 306 are extracted to a negative pressure state through the air extraction pipe 4013, the shunt pipe 4012 and the connecting pipe 4011, and the negative pressure acts on the surface of the molten glass in the bottle mouth cavity 301 through the second cavity 302, the second air outlet hole 307 and the second air inlet 303, so as to make the molten glass closely adhere to the inner wall of the die head 3 and enhance the structural density of the bottle mouth part, thereby effectively improving the mechanical strength of the bottle mouth. At the same time, under the action of the ventilation hole 103 and the heat preservation hole 104 on the initial mold 1, the temperature of the initial mold 1 can be maintained stable. When it is necessary to blow and shape, the vacuum pump 6 is closed, at this time, under the action of the second limiting spring 305, the second plug 304 can block the second air inlet 303, then the driving structure 402 operates to drive the lifting rod 403 to move downward, wherein the lifting rod 403 moves downward, the second air extraction channel 4010 is dislocated with the first air extraction channel 409, then the external gas charging equipment introduces gas into the bottle mouth cavity 301 through the air inlet pipe 4014 and the air inlet channel 408, so as to shape the molten glass. During the shaping process, the first plug 204 moves upward under the action of the gas pressure, the air between the molten glass and the plug 2 can be discharged through the first air inlet 202 and the first air outlet hole 203, so as to avoid affecting the shaping of the glass, and after the gas pressure is stable, the first limiting spring 207 resets to seal the first air inlet 202. After the shaping is completed, the driving structure 402 drives the lifting rod 403 to move downward, the core 407 exits the bottle mouth cavity 301, the initial mold 1 and the die head 3 are separated, and the shaped glass bottle can be taken out. During the whole process, the flaring 5 structure can ensure the sealing performance and air flow conduction efficiency of the connection of the air channels.

Claims

1. A vacuum generating device for glass bottle production, comprising a blank mold (1), a bulkhead (2), a mouth mold (3), a base (4) and a vacuum pump (6), characterized in that: There are two of each of the primary molds (1) and the mouth molds (3); a bottle body cavity (105) and a connecting cavity (106) are provided between the two primary molds (1); a bottle cavity (301) is provided between the two mouth molds (3); the two mouth molds (3) are located in the connecting cavity (106); a base (4017) is provided on the top of the base (4); the mouth mold (3) is located on the top of the base (4017); and the bulkhead (2) is located on the top of the bottle body cavity (105); The base (4) is provided with a T-slot (401) inside, a circular groove (4018) is provided on the top of the T-slot (401), and the circular groove (4018) is arranged in the base (4017). The bottom end of the T-slot (401) is fixedly connected to a driving structure (402), and the top end of the driving structure (402) is fixedly connected to a lifting rod (403), and the lifting rod (403) is slidably connected in the circular groove (4018). An air cavity (404) is provided inside the lifting rod (403), and two fixed blocks (405) are fixedly connected inside the air cavity (404). A connecting rod (406) is fixedly connected between the two fixed blocks (405), and a core (407) is fixedly connected to the top of the connecting rod (406). The top end of the core (407) is slidably connected in the bottle mouth (301). The two die molds (3) have the same internal structure, and a second cavity (302) is provided inside the die mold (3). A second air inlet (303) is provided on the top of the second cavity (302), a second plug (304) is clamped inside the second air inlet (303), a plurality of second air outlet holes (307) are provided inside the second plug (304), a connecting air duct (306) is provided on the side of the second cavity (302), a first air extraction duct (409) is provided inside the base (4017), a second air extraction duct (4010) is provided inside the lifting rod (403), and the second air extraction duct (4010) is provided inside the lifting rod (403). The connecting air channel (306), the first air extraction channel (409) and the second air extraction channel (4010) are connected, and a connecting pipe (4011) is fixedly connected to the side of the lifting rod (403), and one end of the connecting pipe (4011) is fixedly connected to a diversion pipe (4012), and the two ends of the diversion pipe (4012) are respectively fixedly connected to an air extraction pipe (4013) and an air inlet pipe (4014), and the output end of the air extraction pipe (4013) is fixedly connected to the input end of the vacuum pump (6).

2. The vacuum generating device for glass bottle production according to claim 1, characterized in that: An air intake duct (408) is provided between the connecting rod (406) and the lifting rod (403); an input end of the air intake pipe (4014) is connected to an external inflation device; a first electrically controlled valve (4015) is fixedly connected to the surface of the air extraction pipe (4013); and a second electrically controlled valve (4016) is fixedly connected to the surface of the air intake pipe (4014).

3. The vacuum generating device for glass bottle production according to claim 1, characterized in that: The connecting end of the connecting air channel (306), the connecting end of the first air extraction channel (409), and the connecting end of the second air extraction channel (4010) are all provided with flared openings (5).

4. The vacuum generating device for glass bottle production according to claim 1, characterized in that: The second plug (304) is slidably connected in the second cavity (302), a second limit spring (305) is fixedly connected to the bottom of the second plug (304), and the bottom end of the second limit spring (305) is fixedly connected to the bottom end inside the second cavity (302).

5. The vacuum generating device for glass bottle production according to claim 1, characterized in that: A first cavity (201) is provided inside the blind head (2), a first air inlet (202) and a first air outlet (203) are provided at the bottom and top of the first cavity (201), a first plug (204) is clamped inside the first air inlet (202), a sliding rod (205) is fixedly connected to the top of the first plug (204), the top of the sliding rod (205) slides through the first air outlet (203), and is fixedly connected to a blocking plate (206).

6. The vacuum generating device for glass bottle production according to claim 5, characterized in that: The surface of the slide rod (205) is covered with a first limit spring (207), and the two ends of the first limit spring (207) are fixedly connected to the top of the first plug (204) and the top of the inside of the first cavity (201), respectively.

7. The vacuum generating device for glass bottle production according to claim 1, characterized in that: A plurality of ventilation holes (103) and heat-insulating holes (104) are provided inside the two primary molds (1), and the plurality of heat-insulating holes (104) are arranged in two rows and are symmetrically arranged in the upper and lower parts of the primary mold (1).

8. The vacuum generating device for glass bottle production according to claim 1, characterized in that: A groove (101) is provided on the side of one of the primary molds (1), and a convex block (102) is provided on the side of the other primary mold (1), wherein the convex block (102) is engaged in the groove (101).

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