All-electrically driven ultrasonic vibration-infrared heating energy field assisted multi-station precision glass mold pressing equipment

Abstract

The invention discloses full-electric-drive ultrasonic vibration-infrared heating energy field assisted multi-station precision glass mold pressing equipment, which comprises a control box, a feeding assembly, a pressure forming execution unit, a discharging assembly and an electric control cabinet, and adopts an infrared radiation heating mode to carry out rapid non-isothermal heating on a glass prefabricated part. And an ultrasonic vibration element and a pressure sensing element are arranged in the lower mold base of the mold pressing station, and when the prefabricated part is heated to a softening point, the ultrasonic vibration element is started to cooperatively work with an infrared heating technology, so that the filling speed and quality of glass mold pressing forming are improved. The full-electric driving technology is used, the control precision and the die pressing forming efficiency are high, in addition, compared with a traditional glass die pressing machining mode, the infrared heating element and ultrasonic vibration cooperative work machining technology achieves precise and efficient machining of a glass prefabricated part, the problem of interference of heating and vibration in traditional die pressing is solved, and the production efficiency is improved. And the forming precision and efficiency of the product are improved.

Description

Technical Field

[0001] The present invention relates to the field of optical glass production equipment, in particular to an all-electric drive ultrasonic vibration-infrared heating energy field assisted multi-station precision glass molding equipment. Background Art

[0002] A glass molding press is an important mechanical equipment for glass forming, mainly used for manufacturing various optical glasses and other glass products. Glass molding is a processing technology based on the principle of hot forming. This method has a simple process flow, convenient operation, low cost, and can be mass-produced;

[0003] The ultrasonic vibration assisted molding technology places a glass preform on an ultrasonic vibration element. By applying ultrasonic vibration during the molding process, it improves the fluidity of the glass material in the micro-scale mold grooves, increases the filling rate and surface accuracy of the micro-structure, improves problems such as difficult demolding and glass cracking, and improves product quality and production efficiency;

[0004] The infrared heating technology has high heating efficiency, a concentrated heating area, and more precise temperature control to ensure that the glass quickly reaches the predetermined temperature at different stations during the molding process, thereby improving the efficiency of the glass forming equipment;

[0005] Adopting the all-electric drive method has high control precision and operation convenience to ensure that the control precision of the mold closing speed, position, and forming force can meet the technical requirements, thereby improving product quality.

[0006] The present invention uses multi-energy field assisted molding to solve the technical problems of poor filling rate, low demolding performance, and low forming efficiency of complex optical glass components in traditional molding. Summary of the Invention

[0007] To solve the above problems, the present invention proposes an all-electric drive ultrasonic vibration-infrared heating energy field assisted multi-station precision glass molding equipment, which solves the technical problems of poor filling rate and poor demolding performance of complex optical glass in traditional molding.

[0008] To achieve the above object, the technical solution of the present invention is realized as follows:

[0009] The present invention also provides an all-electric drive ultrasonic vibration-infrared heating energy field assisted multi-station precision glass molding equipment, including a control box 100, a feeding component 200, a pressure forming execution unit 300, a discharging component 400, and an electric control cabinet 500;

[0010] The control box 100 is respectively connected to the feeding component 200, the pressure forming execution unit 300, the discharging component 400, and the electric control cabinet 500;

[0011] The feeding component 200 is used to feed the assembly of the preform and the mold into the forming chamber 350; the feeding component 200 includes two feeding doors, the two feeding doors have the same structure, the structure is simple, and sealing strips are provided at the slide rails on both sides of the feeding doors, which can ensure an oxygen-free environment in the forming chamber 350 when the feeding doors are in the closed state;; while the first feeding door 230 is opened, nitrogen gas will be sprayed in the feeding chamber 250 to block air from entering the forming chamber 350, so as to protect the vacuum environment in the forming chamber 350 from being damaged, and further prevent the preform and the mold from oxidizing at high temperatures;

[0012] The pressure forming execution unit 300 is used for multi-station transfer and processing of the assembly of the preform and the mold; the pressure forming execution unit 300 includes a material transfer mechanism 340, a first preheating station, a second preheating station, a third preheating station, a molding station 320, a first annealing station, a second annealing station, a first cooling station and a second cooling station, and the eight stations are arranged in sequence along a straight line. Nitrogen gas is continuously filled inside the forming chamber 350 during the processing, and the amount of nitrogen gas filled is adjusted in real time according to the vacuum degree inside the forming chamber 350;

[0013] The material transfer mechanism 340 is used to transfer the preform to the next station for further processing after the processing at the previous station is completed;

[0014] Infrared heating elements are provided at the preheating, molding and annealing stations, fixed on the front and back sides of the upper cooling plate, and used to heat the upper and lower mold bases and the assembly. It can realize that the heating temperature difference of a single infrared heating element is controlled within ±1°C. Driven by the motor, the upper mold base drives the infrared heating element to move down to complete the heating process of the upper and lower mold bases and the assembly; Pressure sensing elements are respectively provided at the molding and annealing stations. On the one hand, since the connecting shaft enters and exits the forming chamber 350, there is a certain friction between the sealing rings, and it is difficult to ensure whether the pressure on the assembly can reach the preset pressure value. At this time, the pressure sensing element needs to monitor and feedback to the control box 100 in time to make corresponding motion regulation; On the other hand, since the pressures used at the molding station 320 and the annealing station are relatively large, stress concentration is likely to occur inside the glass preform, resulting in cracks. It is necessary to monitor the pressure situation in real time to prevent the pressure from being too large or too small, affecting the forming effect of the product;

[0015] A plurality of nitrogen gas filling ports are provided on the outer side of the forming chamber 350, which can make sufficient nitrogen gas fill into the forming chamber 350, thereby preventing the preform and the molding assembly from oxidizing at high temperatures; And a cooling water circuit is provided on the outer side plate of the forming chamber 350 to prevent the temperature from being too high, causing damage to the surrounding auxiliary mechanism components, thereby shortening the service life or causing high-temperature failure;

[0016] The discharging component 400 is used to send out the assembly drawing of the mold and the prefabricated part from the pressure forming execution unit 300; the discharging component 400 is similar in structure to the feeding component 200. While the second discharging door 430 is opened, nitrogen gas will be sprayed into the discharging chamber 440 to prevent air from entering the forming chamber 350, prevent the destruction of the vacuum environment in the forming chamber 350, and further prevent the oxidation of the prefabricated part and the mold at high temperature;

[0017] The electric control cabinet 500 is used to support the feeding component 200, the pressure forming execution unit 300, the discharging component 400 and the control box 100 and install various electrical appliances to provide electrical control support. There will be some cooling water pipes, wire arrangements and various instruments and meters in the electric control cabinet 500 to adjust and control the normal operation of the equipment, and finally feedback to the control box 100 to form a control system.

[0018] Preferably, as an implementable solution: the control box 100 includes a warning light 110, a housing 120, a human-machine interface 130, adjustment buttons 140, a start button 150, a stop button 160, an emergency stop button 170, a temperature controller 180, and a support cantilever 190;

[0019] The warning light 110 is installed above the housing 120. When an abnormal situation occurs to the equipment or maintenance is required, the warning light 110 will flash to remind the operator to prevent accidents and losses caused by misoperation;

[0020] The housing 120 is used to install the display screen, various control buttons and the warning light 110;

[0021] The human-machine interface 130 is used to display parameters such as the temperature, pressure, molding time and molding speed of the equipment, and can monitor and adjust in a timely manner to ensure the normal operation of the equipment and the quality of the product;

[0022] The control buttons are arranged below the human-machine interface and include adjustment buttons 140, a start button 150, a stop button 160 and an emergency stop button 170.

[0023] Preferably, as an implementable solution: the feeding component 200 includes a feeding mechanism 210, a pushing mechanism 220, a first feeding door mechanism 230, a second feeding door mechanism 240, a feeding chamber 250, a pushing mechanism 220, a first feeding door mechanism 230, a second feeding door mechanism 240, a feeding chamber 250. The feeding component 200 is fixed on the right outer wall of the forming chamber 350;

[0024] The feeding mechanism 210 includes a feeding module 211, a tray 212, a connecting block 213, a photoelectric inductor 214, a photoelectric sensing sheet 215, and a hydraulic buffer 216. The feeding module 211 provides power for the feeding mechanism. Grooves are formed on the tray 212, which plays a certain anti-slip role during the transportation of the assembly. And a passage is formed on the tray 212 for connecting a vacuum generator, so that the assembly of the glass preform and the mold is in a vacuum environment, which is used to prevent the assembly of the glass preform and the mold from shifting or falling when moving along with the feeding module 211. The photoelectric inductor 214 is used for signal reception, and the signal is transmitted into the control box for feedback to determine whether the assembly reaches the position.

[0025] The pushing mechanism 220 includes a pushing module 221, a side pushing connecting column 222, a reinforcing rib 223, a side pushing shaft 224, a pushing block 225, a photoelectric inductor 226, and a photoelectric sensing sheet 227.

[0026] The feeding chamber 250 creates a sealed space for the assembly of the preform and the mold before entering the forming chamber 350 to prevent air from entering the forming chamber 350. At the same time, there are multiple nitrogen filling ports on the outer side of the forming chamber 350 to prevent air from entering the forming chamber 350, and a viewing window is arranged at the rear side of the chamber for observing the internal situation of the feeding chamber 250 in a timely manner.

[0027] Preferably, as an implementable solution: Generally, there are five working stations in the forming chamber 350 of the molding mechanism 310, namely preheating station one, preheating station two, preheating station three, annealing station one, and annealing station two. The cooling mechanism 330 includes cooling station one and cooling station two. Coupled with the molding station 320, the driving and supporting parts of the eight working stations are on the outer side of the forming chamber 350, and the working parts are inside the forming chamber 350, and are arranged in a straight line sequence in the pressure forming execution unit 300.

[0028] The nitrogen filling ports are opened on the upper plate of the forming chamber 350 near the feeding port and the discharging port to create an oxygen-free environment inside the forming chamber 350. And mica plates are used for heat insulation in the middle of the side wall of the forming chamber 350, and a water channel is arranged on the outer plate to prevent damage to other components caused by high temperature.

[0029] The material transfer mechanism 340 includes a rotating motor 341, a gear 342, a telescopic electric cylinder 343, a support frame 344, and a fork 345. The material transfer mechanism 340 is arranged behind the eight working stations, and the fork 345 is placed in parallel at a position 3 mm higher than the lower die base. The rotating motor 341 provides power, connects the gear 342 to drive the fork to perform a 90-degree reciprocating flipping action, and the telescopic electric cylinder 343 provides power for the straight-line movement of the fork to complete the transfer of the assembly until the processing is completed and it is sent out of the forming chamber 350 to the discharging chamber 440.

[0030] Preferably, as an implementable solution: the general molding mechanism 310 includes a motor 311, an electric cylinder 312, a buckle 313, a slider 314, a guide rail 315, urethane rubber 316, a water pipe 317A, an upper water cooling plate 317B, an upper mold base 317C, a thermocouple 317D, an infrared heating tube 317E, a lower mold base 318A, a lower water cooling block 318B, a spacer block 318C, and a bottom plate 318D. The heating temperatures of the first preheating station, the second preheating station, and the third preheating station increase in sequence, aiming to improve the heating efficiency and reach the softening point of the preform at a relatively fast speed; compared with the preheating stations, the annealing station is provided with a pressure sensing element for real-time monitoring of the pressure situation;

[0031] The infrared heating elements are symmetrically arranged on the front and rear sides of the upper cooling plate 317B to uniformly heat the upper and lower mold bases and the assembly of the glass preform and the mold;

[0032] The thermocouple 317D is arranged inside the upper and lower mold bases to monitor the real-time temperature during the heating process and can provide timely feedback for adjustment.

[0033] Preferably, as an implementable solution: the molding station 320 includes a motor 321, a reducer 322, an electric cylinder 323, a buckle 324, a slider 325, a guide rail 326, urethane rubber 327, an upper water cooling plate 328A, an upper mold base 328B, a thermocouple 328C, an infrared heating tube 328D, a lower mold base 328E, a lower water cooling block 328F, an ultrasonic vibration element 328G, a pressure sensing element 328H, and a bottom plate 328I; the ultrasonic vibration element is installed in the lower mold base to provide a mechanical vibration field to assist the infrared heating multi-energy field molding equipment in molding the preform.

[0034] Preferably, as an implementable solution: the cooling mechanism 330 includes a motor 331, an electric cylinder 332, a connecting shaft 333, a T-shaped nut 334, a fixed block 335, an upper cooling plate 336, a water pipe 337, a lower cooling plate 338, and a bottom plate 339.

[0035] Preferably, as an implementable solution: the discharging assembly 400 includes a pushing mechanism 410, a first discharging door mechanism 420, a second discharging door mechanism 430, a discharging chamber 440, and a connecting table 450;

[0036] Compared with the prior art, the advantages of the implementation of the present invention are:

[0037] The above-mentioned all-electric drive ultrasonic vibration-infrared heating energy field-assisted multi-station precision glass molding equipment adopts an all-electric drive method, has high control precision and molding efficiency, and can ensure that the control precision of the mold closing speed, position and forming force meets the technical requirements; in addition, compared with the traditional glass molding processing method, the heating method combining infrared heating elements and ultrasonic vibration shows more excellent processing performance and can achieve precise heating of glass preforms. This technology is convenient for temperature control, thus significantly improving the quality and efficiency of glass molding products. Description of the Drawings

[0038] Figure 1 It is a schematic structural diagram of the multi-station precision glass molding equipment provided by an embodiment of the present invention;

[0039] Figure 2 It is a schematic structural diagram of the control box 100 of the multi-station precision glass molding equipment provided by an embodiment of the present invention;

[0040] Figure 3 It is a schematic structural diagram of the feeding assembly 200 of the multi-station precision glass molding equipment provided by an embodiment of the present invention;

[0041] Figure 4 It is a schematic structural diagram of the feeding mechanism 210 in the feeding assembly 200 of the multi-station precision glass molding equipment provided by an embodiment of the present invention;

[0042] Figure 5 It is a schematic structural diagram of the pushing mechanism 220 in the feeding assembly 200 of the multi-station precision glass molding equipment provided by an embodiment of the present invention;

[0043] Figure 6 It is a schematic structural diagram of the pressure forming execution unit 300 of the multi-station precision glass molding equipment provided by an embodiment of the present invention;

[0044] Figure 7 It is a schematic structural diagram of the general molding mechanism 310 of the multi-station precision glass molding equipment provided by an embodiment of the present invention;

[0045] Figure 8 It is a schematic structural diagram of the upper heating mechanism 317 of the multi-station precision glass molding equipment provided by an embodiment of the present invention;

[0046] Figure 9 It is a schematic structural diagram of the lower heating mechanism 318 of the multi-station precision glass molding equipment provided by an embodiment of the present invention;

[0047] Figure 10 It is a schematic structural diagram of the molding station 320 and the partial view of the multi-station precision glass molding equipment provided by an embodiment of the present invention;

[0048] Figure 11 Schematic diagram of the structure of the cooling station 330 of the multi-station precision glass molding equipment provided by the embodiment of the present invention;

[0049] Figure 12 Schematic diagram of the structure of the material transfer mechanism 340 of the multi-station precision glass molding equipment provided by the embodiment of the present invention;

[0050] Figure 13 Schematic diagram of the structure of the discharging assembly 400 of the multi-station precision glass molding equipment provided by the embodiment of the present invention. Detailed implementation manners

[0051] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0052] The present invention will be further described in detail below through specific examples in combination with the accompanying drawings.

[0053] Refer to Figure 1 , the present invention provides an all-electric drive ultrasonic vibration-infrared heating energy field assisted multi-station precision glass molding equipment, including a control box 100, a feeding assembly 200, a pressure forming execution unit 300, a discharging assembly 400 and an electric control cabinet 500. The electric control cabinet 500 is connected to each component to achieve control, and the control box 100 is responsible for receiving key signals such as pressure and temperature.

[0054] Refer to Figure 2 , the control box 100 includes a warning light 110, a housing 120, a human-machine interface 130, adjustment buttons 140, a start button 150, a stop button 160, an emergency stop button 170, a temperature controller 180, and a support cantilever 190;

[0055] Before starting the equipment, it is necessary to ensure that the power supply is correctly connected. After the power supply is turned on, the operator needs to input key process parameters such as temperature, pressure, molding time, and molding speed through the human-machine interface 130; the adjustment buttons 140 are used to adjust the manual mode and the automatic mode. In the manual mode, the human-machine interface is manually operated to perform the actions of each structure, and in the automatic mode, the equipment automatically executes actions according to the preset program; after the start button 150 is pressed, the equipment will start to run, and the temperature controller 180 is responsible for maintaining the temperature during the processing in an ideal state; if the machine tool encounters abnormal operation or emergencies during the process, at this time, the emergency stop button 170 needs to be pressed to quickly brake the machine tool to prevent unnecessary dangers; after the preform processing is completed, press the stop button 170 to stop the operation of the equipment.

[0056] See Figure 3 , the feeding assembly 200 includes a feeding mechanism 210, a pushing mechanism 220, a first feeding door mechanism 230, a second feeding door mechanism 240, and a feeding chamber 250.

[0057] The feeding assembly 200 performs a feeding operation, including the following specific steps:

[0058] Place the assembly of the mold and the preform at the position of the tray 212 of the feeding mechanism 210. When the photoelectric inductor 214 senses it, the feeding module 211 operates, and the first feeding door 230 opens. Then it is sent to the feeding chamber 250, and then sent into the forming chamber 350 by the pushing mechanism 220 to complete the feeding operation of the assembly. While the first feeding door 230 is opening, nitrogen gas will be sprayed into the feeding chamber 250 to block the air from entering the forming chamber 350, so as to protect the vacuum environment of the forming chamber 350 from being damaged, and further prevent the preform and the mold from oxidizing at high temperature.

[0059] See Figure 4 , the feeding mechanism 210 includes a feeding module 211, a tray 212, a connecting block 213, a photoelectric inductor 214, a photoelectric induction sheet 215, and a hydraulic buffer 216;

[0060] The feeding mechanism 210 performs a feeding operation, including the following specific steps:

[0061] The tray 212 is fixed on the feeding module 211 through the connecting block 213 and moves with the feeding module 211. When the photoelectric inductor 214 senses, the feeding module 211 operates to send the tray 212 in front of the first feeding door 230. The photoelectric induction sheet 215 sweeps across the photoelectric inductor 214, and the sensed signal is transmitted to the control box 100, and fed back to the feeding module 211 to stop operating. After the first feeding door 230 is opened, nitrogen gas is filled into the feeding chamber 250 to prevent air from entering the forming chamber 350. The feeding module 211 further operates to reach the linear position of the pushing block 225 of the pushing mechanism 220. At this time, the pushing mechanism 220 operates to push the assembly of the preform and the mold to the front of the second feeding door. The feeding module 211 resets, the first feeding door 230 closes, and then the second feeding door 240 opens. The pushing mechanism 220 continues to operate to push the assembly into the middle position of the lower die base 318A at the preheating station of the forming chamber 350;

[0062] It should be noted that the staff or the robotic arm places the assembly of the mold and the preform on the tray 212. There is a passage on the tray 212 for connecting the vacuum generator to form a vacuum atmosphere around the assembly to prevent the assembly from shifting or falling during the movement with the feeding module 211.

[0063] See Figure 5, the pusher mechanism 220 includes a pusher module 221, a side pusher connecting column 222, a reinforcing rib 223, a side pusher shaft 224, a pusher block 225, a photoelectric inductor 226, and a photoelectric induction sheet 227;

[0064] The pusher mechanism 220 performs a pusher operation, including the following specific steps:

[0065] The side pusher connecting column 222 connects to the side pusher shaft 224, and the tail of the side pusher shaft 224 connects to the pusher block 225. After the assembly enters the set position of the feeding chamber 250 along with the feeding mechanism 210, the pusher mechanism 220 operates to push the assembly of the prefabricated part and the mold in front of the second feeding door 240. The feeding module 211 resets, the first feeding door 230 closes, and then the second feeding door 240 opens. The pusher mechanism 220 continues to operate to push the assembly into the middle position of the lower die base 318A at the preheating station I in the forming chamber 350. The pusher mechanism 220 resets, and then the second feeding door 240 closes, completing the feeding operation.

[0066] See Figure 6 , the pressure forming execution unit 300 includes a material transfer mechanism 340, a preheating station I, a preheating station II, a preheating station III, a molding station 320, an annealing station I, an annealing station II, a cooling station I, and a cooling station II, and the eight stations are arranged in sequence along a straight line; after entering the forming chamber 350, the assembly is first preheated at the preheating station to heat it to the softening point. After the processing at the preheating station is completed, the material transfer mechanism 340 transfers the assembly to the molding station 320 to complete the molding process. The molding station 320 performs a molding operation on the assembly according to relevant parameters such as the set molding temperature, molding time, molding speed, and molding pressure. After the molding is completed, the assembly is then subjected to a pressure maintaining and annealing treatment at the annealing station to eliminate the internal stress of the prefabricated part and improve the forming effect. After the annealing is completed, it is then cooled at the cooling station. After reaching the set cooling time and temperature, it is sent out of the forming chamber 350 by the material transfer mechanism 340, completing the processing of the prefabricated part.

[0067] See Figure 7 , the general molding mechanism 310 includes a motor 311, an electric cylinder 312, a buckle 313, a slider 314, a guide rail 315, a urethane rubber 316, an upper heating mechanism, and a lower heating mechanism.

[0068] See Figure 8 , the upper heating mechanism 317 includes a water pipe 317A, an upper water cooling plate 317B, an upper die base 317C, a thermocouple 317D, and an infrared heating tube 317E.

[0069] See Figure 9 , the lower heating mechanism 318 includes a lower die base 318A, a lower water cooling block 318B, a spacer block 318C, and a bottom plate 318D;

[0070] The preheating station performs a preheating operation, including the following specific steps:

[0071] The preheating stations are respectively preheating station one, preheating station two, and preheating station three. The heating temperatures of preheating station one, preheating station two, and preheating station three increase in sequence, aiming to increase the heating efficiency and reach the softening point of the preform at a relatively fast speed;

[0072] After the assembly of the mold and the preform enters preheating station one of the forming chamber 350, the electric cylinder of the preheating station drives the slider to press straight down along the guide rail according to the set molding speed. Using double guide rails is more stable; the connection between the slider and the electric cylinder is through the clearance fit of a T-shaped nut and a buckle 313, which can avoid the problem of difficult assembly due to errors; there are water channels in the upper and lower water-cooling blocks, and circulating cooling water is provided through a water pipe. At the same time, the upper and lower mold bases adopt a hollow design to prevent the upper and lower mold bases from conducting heat and affecting the damage of other parts, causing unnecessary trouble; the infrared heating elements are fixed on the front and rear sides of the upper cooling plate 317B to uniformly heat the upper and lower mold bases and the assembly; the thermocouple 317D is arranged inside the upper and lower mold bases; according to the set molding time, when a certain molding temperature is reached, the electric cylinder resets, and the transfer mechanism 340 moves the assembly of the mold and the preform to preheating station two and preheating station three for continued heating to complete the preheating work;

[0073] The annealing station performs an annealing operation, including the following specific steps:

[0074] After the assembly is moved to annealing station one by the transfer mechanism 340, the control box 100 sends a signal, and the rotational motion of the motor is converted into the linear motion of the electric cylinder, driving the slider to move downward along the guide rail, and then driving the upper heating mechanism 317 to press down. The assembly is molded according to the set molding speed and molding pressure of the control box 100, and the infrared heating tube 317E also heats the assembly according to the set molding temperature of the control box 100. After the processing in annealing station one is completed, the control box 100 feeds back to the motor to drive the electric cylinder to reset. The transfer mechanism 340 moves the assembly to the next annealing station. After the processing is completed, the motor drives the electric cylinder to reset, and then it is moved to cooling station one by the transfer mechanism 340;

[0075] It should be noted that compared with the preheating station, a pressure sensing element is arranged below the lower cooling plate 318B in the annealing station. Since the annealing process has strict requirements on pressure, the pressure needs to be monitored throughout the process to prevent excessive or too little pressure, resulting in excessive internal stress of the product and affecting the quality of the finished product.

[0076] See Figure 10, the molding station 320 includes a motor 321, a reducer 322, an electric cylinder 323, a buckle 324, a slider 325, a guide rail 326, a urethane rubber 327, an upper water cooling plate 328A, an upper die holder 328B, a thermocouple 328C, an infrared heating tube 328D, a lower die holder 328E, a lower water cooling block 328F, an ultrasonic vibration element 328G, a pressure sensing element 328H, and a bottom plate 328I;

[0077] The molding station 320 performs a molding operation, including the following specific steps:

[0078] After the assembly is sent to the molding station 320 by the material transfer mechanism 340, the control box 100 controls the motor, and the rotational motion of the motor 321 is converted into the linear motion of the electric cylinder, which then drives the slider 325 to move downward along the guide rail 326. The slider is connected to the upper water cooling plate 328A through a shaft and a flange. A urethane rubber 327 is placed under the slider to prevent the slider from colliding with the lower connecting plate. Finally, the upper die holder 328B connected to the upper water cooling plate 328A presses on the assembly; according to the molding pressure, molding speed, and molding temperature set by the control box 100, the ultrasonic vibration element 328G cooperates to assist in completing the molding process; after the assembly is processed at the molding station 320, the control box 100 feeds back to the motor 321 to drive the electric cylinder 323 to reset, and the material transfer mechanism 340 moves the assembly to the next station;

[0079] It should be noted that a pressure sensing element 328H is arranged under the ultrasonic vibration element 328G to timely monitor the pressure change during the molding process, and the control box 100 performs closed-loop regulation; there is a thermocouple 328C inside the upper and lower die holders to timely monitor the temperature change during the molding process, and the control box 100 performs closed-loop regulation. During the molding process, the upper and lower water cooling blocks continuously flow in and out of circulating water through water pipes for cooling.

[0080] See Figure 11 , the cooling station 330 includes a motor 331, an electric cylinder 332, a connecting shaft 333, a T-shaped nut 334, a fixing block 335, an upper cooling plate 336, a water pipe 337, a lower cooling plate 338, and a bottom plate 339; the cooling station 330 is relatively simple compared to other stations, and there is a circulating water path in the upper and lower cooling plates, and the assembly is gently touched to cool it down to form;

[0081] The cooling station 330 performs a cooling operation, including the following specific steps:

[0082] After the assembly is moved to the cooling station 1 by the material transfer mechanism 340, the control box 100 sends a signal, and the rotational motion of the motor 331 is converted into the linear motion of the electric cylinder 332, driving the upper cooling plate 336 to move downward until it lightly touches the assembly. The upper cooling plate 336 and the lower cooling plate 338 begin to cool the assembly. After the cooling at the cooling station 1 is completed, the assembly is transferred to the cooling station 2 by the material transfer mechanism 340 for further cooling.

[0083] It should be noted that there is a distance between the T-nut 334 and the upper cooling plate 336. The cooling process does not require excessive pressure on the assembly. It only needs to be lightly touched to cool it. The gap between the T-nut 334 and the upper cooling plate 336 provides a certain distance buffer for the electric cylinder 332 to prevent excessive pressure during the cooling process and damage to the formed product.

[0084] See also Figure 12 The material moving mechanism 340 includes a rotating motor 341, a gear 342, a telescopic electric cylinder 343, a support frame 344, and a shift fork 345;

[0085] The material transfer mechanism 340 performs a material transfer operation, including the following specific steps:

[0086] When the assembly is pushed to the preheating station 1 by the pushing mechanism 220 of the feeding component 200, the pushing mechanism 220 is reset, the second feeding door 240 is closed, and the first step of preheating processing of the assembly is started. After the processing of the preheating station 1 is completed, the telescopic electric cylinder 343 drives the fork 345 to move the assembly to the next station according to the distance set by the control box 100, and the telescopic electric cylinder 343 retreats a distance to prevent the fork 345 from scratching the preform and the mold assembly during rotation. The rotating motor 341 is connected to the gear 342 to rotate, so that the fork 345 flips 90 degrees, and then the telescopic electric cylinder 343 is reset again to complete the assembly's material moving process. After waiting for the processing of this station to be completed, the above process is repeated until the processing is completed and sent out of the forming chamber 350, and finally sent out to the docking station 450 by the discharging component 400.

[0087] See also Figure 13 The discharging assembly 400 includes a pushing mechanism 410, a first discharging door mechanism 420, a second discharging door mechanism 430, a discharging chamber 440, and a docking station 450;

[0088] The discharging component 400 performs the discharging operation, including the following specific steps:

[0089] After the assembly is processed in the forming chamber 350, it is sent to the discharge chamber 440 and the straight position of the push block by the material moving mechanism 340, and then the pushing mechanism 440 sends the assembly out of the discharge chamber 440. When the second discharge door 430 is opened, a large amount of nitrogen needs to be sprayed to prevent air from entering the discharge chamber 440 and then entering the forming chamber 350 to prevent oxidation of the preform. The pushing mechanism 410 pushes the assembly to the docking station 450, the second discharge door 430 is closed, and the staff or the robot arm takes the assembly away.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fully electric driven ultrasonic vibration-infrared heating energy field assisted multi-station precision glass molding equipment, characterized in that: It includes a control box 100 , a material feeding assembly 200 , a pressure forming execution unit 300 , a material discharging assembly 400 and an electric control cabinet 500 .

2. The control box 100 is an industrial control integrated machine with small size, convenient operation and high intelligence. The industrial control integrated machine is located on the right side of the whole equipment and is fixedly installed on the frame. It is connected with the pressure forming execution unit 300, the feeding assembly 200, the discharging assembly 400 and the electric control cabinet 500 to ensure that the forming equipment can accurately process the glass elements according to the preset program; The feeding assembly 200 is located on the right side of the pressure forming execution unit 300, fixed on the outer right wall of the forming chamber 350, and the lower edge of the feeding door is flush with the processing station of the forming chamber 350, and is used to feed the assembly of the mold and the glass preform into the forming chamber 350; the feeding assembly 200 has two feeding doors, the two feeding doors have the same structure and a simple structure, and sealing strips are arranged at the slide rails on both sides of the feeding door, which can ensure the oxygen-free environment of the forming chamber 350 when the feeding door is kept closed; when the first feeding door 230 is opened, a large amount of nitrogen will be sprayed into the feeding chamber 250 to prevent air from entering the feeding chamber, and when the second feeding door is opened, it enters the forming chamber 350, thereby protecting the oxygen-free environment of the forming chamber 350 from being damaged, thereby preventing the glass preform from being oxidized at high temperature; The pressure forming execution unit 300 is used for multi-station transmission and processing of the assembly of the glass preform and the mold. The pressure forming execution unit 300 includes a general molding mechanism 310, a molding station 320, a cooling mechanism 330, a material transfer mechanism 340 and a forming chamber 350. The preheating station 1, the preheating station 2, the preheating station 3, the annealing station 1 and the annealing station 2 are called the general molding mechanism 310, the cooling station 1 and the cooling station 2 are called the cooling mechanism 330, and the eight stations are arranged in a linear sequence. The inside of the forming chamber 350 is continuously filled with nitrogen during the processing, and the amount of nitrogen filled is adjusted in real time according to the vacuum degree inside the forming chamber 350; The general molding mechanism 310 and the molding station 320 are provided with infrared heating tubes 317E, which are symmetrically arranged on the front and rear sides of the upper cooling plate 317B to uniformly heat the upper and lower mold bases and the assembly of the glass preform and the mold, and can achieve a temperature control accuracy of ±1°C for a single infrared heating tube 317E. The upper mold base 317C is driven by a motor to move the infrared heating tube 317E downward, thereby completing the contactless heating of the upper and lower mold bases and the assembly of the glass preform and the mold. The infrared heating tube 317E can achieve rapid heating of the mold and the preform to a preset temperature, and the heating is uniform; molding The station 320 is also provided with an ultrasonic vibration element 328G on the lower cooling plate, which works in conjunction with infrared heating to process the preform. When the infrared heating reaches the softening point, the ultrasonic vibration element 328G is synchronously started, and the viscosity of the glass is reduced by using vibration energy, which can reduce the molding pressure and obtain higher product quality; the molding station 320 and the annealing station are respectively provided with a pressure sensing element 328H under the lower cooling plate. During the molding process, when the connecting shaft enters and exits the forming chamber 350, due to the friction resistance between the sealing ring and the connecting shaft, the actual pressure of the upper mold seat on the glass preform and the mold assembly may be difficult to accurately reach the preset value. For this reason, the pressure sensing element 328H is provided to monitor the pressure change in real time and feed back the data to the control box 100, so as to timely perform motion control and ensure pressure accuracy. In addition, considering that the working pressure of the molding station 320 and the annealing station is relatively high, stress concentration is likely to occur inside the glass preform, which in turn causes defects such as cracks. Therefore, the pressure must be continuously monitored to strictly prevent the pressure value from exceeding or falling below the process requirement range, thereby ensuring the molding quality and process stability of the product.

3. A plurality of nitrogen filling ports are arranged on the outside of the forming chamber 350, so that sufficient nitrogen can be filled into the forming chamber 350, thereby preventing the glass preform and the molded components from being oxidized at high temperatures, and a cooling water channel is arranged on the outer plate of the forming chamber 350, and a mica plate is arranged in the middle of the outer wall of the forming chamber to prevent the surrounding auxiliary mechanism components from being damaged due to excessive temperature, thereby shortening the service life or high temperature failure; The material transfer mechanism 340 is arranged horizontally at the rear side of the eight workstations. The rotating motor 341 is connected to the gear, which is fixed to the material transfer shaft. The rotating motor 341 and the telescopic module 343 work together to realize the 90-degree flipping movement and linear movement of the shift fork, so that the assembly of the glass preform and the mold can be transferred to the next workstation for further processing after the processing of the previous workstation is completed. The discharge assembly 400 is similar in structure to the feed assembly 200, and is located on the left side of the compression molding machine and fixedly mounted on the outer left wall of the molding chamber 350. It is used to push the glass preforms sent out of the pressure molding execution unit 300 after processing to the docking station 450, waiting for staff or robotic arms to take them away.

4. The all-electric driven ultrasonic vibration-infrared heating energy field assisted multi-station precision glass molding equipment according to claim 1, characterized in that: The control box 100 includes a warning light 110, a housing 120, a human-machine interface 130, an adjustment button 140, a start button 150, a stop button 160, an emergency stop button 170, a thermostat 180, and a support cantilever 190; The warning light 110 is used to flash to remind the operator when the equipment is in abnormal condition or needs to be shut down for maintenance, so as to prevent accidents and losses caused by misoperation; The human-machine interface 130 is used to display parameters such as the temperature, pressure, molding time and molding speed of the equipment, and can be monitored and adjusted in a timely manner to ensure the normal operation of the equipment; The housing 120 is used to install a display screen, various control buttons, a thermostat 180 and a warning light 110 ; the control buttons include an adjustment button 140 , a start button 150 , a stop button 160 and an emergency stop button 170 .

5. The all-electric driven ultrasonic vibration-infrared heating energy field assisted multi-station precision glass molding equipment according to claim 1, characterized in that: The feeding assembly 200 includes a feeding mechanism 210, a pushing mechanism 220, a first feeding door mechanism 230, a second feeding door mechanism 240, and a feeding chamber 250; The feeding mechanism 210 includes a feeding module 211, a tray 212, a connecting block 213, a photoelectric sensor 214, a photoelectric sensor sheet 215, and a hydraulic buffer 216. A worker or a robot arm places the assembly of the mold and the preform on the tray 212. A passage is opened on the tray 212 for connecting a vacuum generator to form a vacuum atmosphere around the assembly. In addition, the circular groove design of the tray is used to prevent the assembly from being offset or falling when it moves with the feeding module 211. The feeding module 211 feeds the assembly of the preform and the mold to the first feeding door 230, and the photoelectric sensor sheet 215 scans the photoelectric sensor 214, transmits the sensed signal to the control box 100 and feeds back to the module to stop the action. After the first feeding door is opened, nitrogen is filled into the feeding chamber 250 to prevent air from entering the feeding chamber 250 and then entering the forming chamber 350. The feeding module 211 further moves to reach the linear position of the push block 225 of the pushing mechanism 220; at this time, the pushing mechanism 220 moves to push the assembly of the preform and the mold to the second feeding door 240, the feeding module 211 is reset, the first feeding door 230 is closed, and then the second feeding door 240 is opened, and the pushing mechanism 220 continues to move to push the assembly into the middle position of the mold base 318A at the preheating station of the forming chamber 350, the pushing mechanism 220 is reset, and then the second feeding door 240 is closed; The pushing mechanism 220 includes a pushing module 221, a side pushing connecting column 222, a reinforcing rib 223, a side pushing shaft 224, a pushing block 225, a photoelectric sensor 226, and a photoelectric sensor sheet 227; The feeding chamber 250 creates a closed space for the assembly of the preform and the mold before the forming chamber 350 is formed to prevent air from entering the forming chamber 350. A visual window is provided on the rear side of the chamber for timely observing the internal situation of the feeding chamber 250.

6. The all-electric driven ultrasonic vibration-infrared heating energy field assisted multi-station precision glass molding equipment according to claim 1, characterized in that: The pressure forming execution unit 300 is arranged in the forming chamber 350 and has a total of eight stations, which can be divided into a general molding mechanism 310, a molding station 320 and a cooling mechanism 330. The general molding mechanism 310 includes a preheating station 1, a preheating station 2, a preheating station 3, an annealing station 1 and an annealing station 2. The cooling mechanism 330 includes a cooling station 1 and a cooling station 2. The driving mechanisms and supporting mechanisms of the eight stations are outside the forming chamber 350, and the pressing and forming process of the preform is inside the forming chamber 350. The hot station is equipped with three stations to heat the preform and the mold step by step, with high working efficiency. After reaching the preset temperature, the molding station 320 will perform pressing and molding. After the pressing, it needs to be annealed to eliminate internal stress and improve product quality. The upper and lower cooling plates of the cooling station are connected with cooling water to cool the assembly. After the processing is completed, the material transfer mechanism 340 sends it out of the forming chamber 350; during the startup of the molding equipment, the forming chamber 350 is continuously filled with nitrogen to keep the interior in an oxygen-free environment; The material transfer mechanism 340 is horizontally arranged at the rear side of the eight workstations, and is used to transfer the assembly to the next workstation for further processing after the assembly has completed processing at the previous workstation, and transfer it out of the forming chamber 350 after the processing is completed.

7. The all-electric driven ultrasonic vibration-infrared heating energy field assisted multi-station precision glass molding equipment according to claim 4, characterized in that: The general molding mechanism includes a motor 311, an electric cylinder 312, a buckle 313, a slider 314, a guide rail 315, a high-strength rubber 316, an upper heating mechanism 317, and a lower heating mechanism 318; The upper heating mechanism 317 includes a water pipe 317A, an upper water cooling plate 317B, an upper mold base 317C, a thermocouple 317D, and an infrared heating tube 317E; The lower heating mechanism 318 includes a lower die base 318A, a lower water cooling block 318B, a cushion block 318C, and a bottom plate 318D; The heating temperatures of preheating stations 1, 2 and 3 are increased in sequence, in order to increase the heating efficiency and reach the softening point of the preform at a faster speed; The buckle 313 and the floating joint clearance match can avoid the problem of difficult assembly due to error problems; water channels are provided in the upper water cooling plate 317B and the lower water cooling block 318B, and the upper part of the upper mold base 317C and the lower part of the lower mold base 318A are hollowed out to prevent the upper and lower mold bases from damaging other components due to heat conduction; the infrared heating tube 317E is fixed on the front and rear sides of the upper cooling plate 317B to uniformly heat the upper mold base 317C, the assembly and the lower mold base 318A, and the thermocouple is arranged inside the upper and lower mold bases to monitor the temperature in real time; The annealing station is similar to the preheating station. The infrared heating tubes 317E are symmetrically arranged on the front and rear sides of the upper cooling plate 317B to heat the upper and lower mold bases and the assembly of the glass preform and the mold. The difference is that a pressure sensor element 328I is provided under the lower cooling block 318B to monitor the output force of the electric cylinder 312 in real time and feed it back to the control box 100 in time, and the control box 100 feeds back to the electric cylinder 312 to realize closed-loop regulation. Since annealing is required to eliminate stress, the pressure size requirements are relatively strict to prevent it from being too large or too small to affect the forming effect of the glass preform.

8. The all-electric driven ultrasonic vibration-infrared heating energy field assisted multi-station precision glass molding equipment according to claim 4, characterized in that: The molding station 320 includes a motor 321, a reducer 322, an electric cylinder 323, a buckle 324, a slider 325, a guide rail 326, a high-strength rubber 327, an upper water-cooling plate 328A, an upper mold base 328B, a thermocouple 328C, an infrared heating tube 328D, a lower mold base 328E, an ultrasonic vibration element 328G, a lower water-cooling block 328F, a pressure sensing element 328H, and a bottom plate 328I. Water channels are provided in the upper water-cooling plate 328A and the lower water-cooling block 328F. At the same time, a hollow design is adopted above the upper mold base 328B and below the lower mold base 328E to prevent the heat conduction of the upper and lower mold bases from affecting the damage of other components and causing unnecessary trouble. During the molding process, when the connecting shaft enters and exits the forming chamber 350, due to the friction resistance between the sealing ring and the connecting shaft, the actual pressure of the upper mold base on the glass preform and the mold assembly may be difficult to accurately reach the preset value. To this end, a pressure sensing element 328H is provided to monitor the pressure change in real time and feed the data back to the control box 100 so as to timely perform motion control and ensure pressure accuracy. In addition, considering that the working pressure of the molding station 320 and the annealing station is relatively high, stress concentration is likely to occur inside the glass preform, thereby causing defects such as cracks. Therefore, the pressure must be continuously monitored to strictly prevent the pressure value from exceeding or falling below the process requirement range, thereby ensuring the molding quality and process stability of the product; The infrared heating tube 328D of the molding station 320 is longer than that of other stations. It is also symmetrically arranged on the front and back sides of the upper cooling plate to heat the upper and lower mold bases and the assembly of the glass preform and the mold. The heating efficiency will be higher by infrared heating, and the purpose is to mold the preform more effectively; the ultrasonic vibration element 328G is installed in the lower mold base to provide a mechanical vibration field to assist the infrared heating multi-energy field molding equipment in molding the preform.

9. The all-electric driven ultrasonic vibration-infrared heating energy field assisted multi-station precision glass molding equipment according to claim 4, characterized in that: The cooling mechanism 330 includes a motor 331, an electric cylinder 332, a connecting shaft 333, a T-nut 334, a fixing block 335, an upper cooling plate 336, a water pipe 337, a lower cooling plate 338, and a bottom plate 339; the cooling mechanism 330 is relatively simpler than other workstations, and a circulating water circuit is provided in the upper and lower cooling plates to lightly touch the assembly for cooling.

10. The all-electric driven ultrasonic vibration-infrared heating energy field assisted multi-station precision glass molding equipment according to claim 4, characterized in that: The material transfer mechanism 340 includes a rotating motor 341, a gear 342, a telescopic electric cylinder 343, a support frame 344, and a shift fork 345; the material transfer mechanism 340 is arranged behind the eight workstations, and the shift fork is placed in parallel at a position 3 mm higher than the lower mold base. The rotating motor 341 provides power, and the connecting gear 342 drives the shift fork to perform a 90-degree reciprocating flip movement. The telescopic electric cylinder 343 provides power for the shift fork to perform a linear motion to complete the transfer of the assembly of the glass preform and the mold until the processing is completed and the forming chamber 350 is sent to the discharge chamber 440.

11. The all-electric driven ultrasonic vibration-infrared heating energy field assisted multi-station precision glass molding equipment according to claim 8, characterized in that: The discharging assembly 400 includes a material pushing mechanism 410, a first discharging door mechanism 420, a second discharging door mechanism 430, a discharging chamber 440, and a docking station 450; The discharge chamber 440 creates a closed space for the assembly of the preform and the mold when it is pushed out of the forming chamber 350 to prevent air from entering the forming chamber 350; after the assembly is processed in the forming chamber 350, the material moving mechanism 340 sends it to the straight line position between the discharge chamber 440 and the push block, and then the pushing mechanism 410 sends the assembly of the glass preform and the mold out of the discharge chamber 440 to the docking station 450. When the second discharge door 430 is opened, a large amount of nitrogen needs to be sprayed to prevent air from entering the discharge chamber 440 and then entering the forming chamber 350 to destroy the oxygen-free environment of the forming chamber 350.

12. The all-electric driven ultrasonic vibration-infrared heating energy field assisted multi-station precision glass molding equipment according to claim 9, characterized in that: The outer plates of the forming chamber 350 are all provided with water channels to prevent the temperature of the forming chamber 350 from being too high. Mica plates are used for heat insulation between the outer plates and the inner plates of the forming chamber 350, so that the outer side can reach a safe temperature to avoid unnecessary danger and damage to other mechanical components; the upper plate is provided with 4 nitrogen filling holes, and the lower plate is also provided with holes for providing circulating water to the lower cooling plate through cold water pipes; there are four sealed door bodies in the front and back, which are also composed of three layers of plates. Each door body is also provided with a cooling water channel and a visual window, so that the condition inside the forming chamber 350 can be observed in time.

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