Synthetic quartz plate mold pressing combined mold

Abstract

The invention discloses an artificial quartz plate mold pressing combined mold, and relates to the technical field of quartz plate production equipment.The bottom of an upper mold is provided with an upper cavity, one end of a first push rod penetrates through the upper mold and enters the upper cavity to be connected with a pressing plate, and the inner side wall of the upper cavity is provided with a plurality of air inlet holes; an air inlet channel is formed in the upper mold, the vacuum pump is installed at the top of the upper mold, the other end of the air inlet channel is connected with the vacuum pump through a guide pipe, an air conveying channel is formed in the upper mold, and one end of the second push rod is connected with the upper mold; the air storage device is installed on the side wall of the lower die, a connecting channel connected with the air storage device is formed in the positioning hole corresponding to the positioning rod provided with the through hole, and a plurality of air injection holes are formed in the bottom of the lower cavity. Gas extracted from the mold is stored, the gas is released during demolding to assist in pushing the quartz plate for demolding, and meanwhile, a gas film is formed on the surface of the quartz plate, so that the situation that the quartz plate is scratched during demolding is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of quartz plate production equipment, and particularly to a molding combination mold for artificial quartz plates. Background Art

[0002] Artificial quartz stone is a high-grade building decoration material with high hardness, high toughness, high temperature resistance and corrosion resistance. Its production process mainly includes three links: raw material processing, plate production, and grinding and polishing. Raw material processing is to screen, clean, crush and grind natural quartz ore to make quartz sand and quartz powder. Plate production is to mix quartz powder with auxiliary materials and stir them, then press the powder into shape in a mold through a pressing device, and finally cure the plate through a curing furnace. Grinding and polishing is to cut and surface-treat the plate, and finally package it.

[0003] During the process of pressing and forming the existing quartz plates through a mold, the mold needs to be placed in a vacuum environment, and the gas in the mold is discharged during the mold closing process to avoid bubbles in the pressed and formed quartz plates. After pressing and forming, generally, a mechanical device is used to push the quartz plate out of the mold for demolding. However, this method is likely to cause damage to the surface of the quartz plate.

[0004] Therefore, a molding combination mold for artificial quartz plates is needed. Summary of the Invention

[0005] Aiming at the above deficiencies, the present invention provides a molding combination mold for artificial quartz plates. By storing the gas extracted from the mold and releasing this part of the gas during demolding to assist in pushing the quartz plate for demolding, and at the same time forming an air film on the surface of the quartz plate to reduce the scratching of the quartz plate during demolding. The specific technical solutions are as follows:

[0006] A molding combination mold for artificial quartz plates, comprising an upper mold, a lower mold, positioning rods, a vacuum pump, a first push rod, a second push rod, a pressing plate, a conduit and a gas storage device;

[0007] An upper cavity is formed at the bottom of the upper mold. The pressing plate is slidably installed in the upper cavity and has the same cross-sectional shape as the upper cavity. One end of the first push rod passes through the upper mold and enters the upper cavity to be connected with the pressing plate. A plurality of air inlet holes are formed on the inner side wall of the upper cavity. An air inlet channel is formed in the upper mold, and one end of the air inlet channel is communicated with the air inlet holes. The vacuum pump is installed on the top of the upper mold. The other end of the air inlet channel is connected with the vacuum pump through a conduit. The positioning rods are installed at the bottom of the upper mold and are arrayed around the upper cavity. An air delivery channel is formed in the upper mold. A through hole is formed on any one of the positioning rods, and one end of the through hole is communicated with the air delivery channel. One end of the second push rod is connected with the upper mold;

[0008] A lower cavity is formed at the top of the lower mold. Positioning holes corresponding to the positioning rods are formed around the lower cavity at the top of the lower mold. The air storage device is installed on the side wall of the lower mold, and a connection channel connected to the air storage device is formed in the positioning hole corresponding to the positioning rod provided with the through hole. A plurality of air injection holes are formed at the bottom of the lower cavity.

[0009] Preferably, the air storage device is provided with an air inlet port and an air outlet port. A one-way valve is installed at the air inlet port, and a solenoid valve is installed at the air outlet port.

[0010] Preferably, the air storage device includes a box body, an air storage tank, a pressure sensor and a drying tank. The box body is installed on the side wall of the lower mold. The air storage tank and the drying tank are installed in the box body. One end of the drying tank is connected to the air inlet port, and the other end is connected to one end of the air storage tank. The other end of the air storage tank is connected to the air outlet port. A pressure sensor is installed in the air storage tank.

[0011] Preferably, a heat preservation material is covered on the outer side wall of the air storage tank. A heating device is installed on the side wall of the air storage tank. A temperature sensor is installed in the air storage tank.

[0012] Preferably, the solenoid valve adopts a pulse valve.

[0013] Preferably, a travel switch is installed in any one of the positioning holes. The travel switch is electrically connected to the pulse valve.

[0014] Preferably, an elastic sealing ring is installed in the positioning hole provided with the connection channel.

[0015] Preferably, an automatic opening and closing device is installed in the air injection hole. The automatic opening and closing device includes a spring, a cylinder and a piston plate. A plurality of installation grooves are formed in the lower mold. The installation grooves correspond to the air injection holes one by one. The automatic opening and closing device is installed in the installation grooves. The piston plate is sleeved on the outer side wall of the cylinder and has an interference fit with the installation grooves. One end of the cylinder is provided with an opening. The cylinder is slidably installed in the air injection hole. The spring is installed in the installation groove, and both ends of the spring are elastically abutted against the end of the cylinder far from the air injection hole and the inner side wall of the installation groove respectively. An air outlet hole is formed in the installation groove and is located on the side of the piston plate close to the air injection hole. The air outlet hole is connected to the air storage device.

[0016] Preferably, a limiting plate is installed on the outer side wall of the cylinder. The diameter of the limiting plate is smaller than the diameter of the piston plate.

[0017] Preferably, a vibration device is further included. One end of the vibration device is connected to the air storage tank, and the other end is connected to the air outlet port. The vibration device is used to assist the lower mold to vibrate and demold and is driven and started by the gas in the air storage tank.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. In the present invention, the gas extracted when the mold is evacuated is stored, and then the stored gas is pressurized and ejected during demolding, generating a thrust on the bottom of the quartz plate to assist in demolding, reducing the working time and improving the production efficiency.

[0020] 2. When the quartz plate is demolded by the gas push, since the gas contacting the quartz plate will not affect the surface of the quartz plate, the gas-assisted demolding can reduce the thrust required by the mechanical ejection demolding method. At the same time, the gas can form a gas film between the quartz plate and the mold, reducing the friction coefficient between the quartz plate and the mold, thereby reducing the surface scratch rate during the demolding process of the quartz plate.

[0021] 3. In the present invention, the collected gas is dried, and at the same time, heat preservation and pressure maintenance are carried out, and the temperature is the same as the surface temperature of the quartz plate during demolding, thus avoiding the situation that the inconsistent heat loss rate on the surface of the quartz plate caused by the gas leads to stress damage inside the quartz plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for description in the embodiments. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to actual scale.

[0023] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 is a top view of the overall structure of the present invention;

[0025] Figure 3 is Figure 2 the sectional view taken along A-A in

[0026] Figure 4 is the main sectional view of the upper mold of the present invention

[0027] Figure 5 is a schematic diagram of the structure of the automatic opening and closing device of the present invention.

[0028] 1. Upper die; 101. Upper cavity; 102. Air inlet hole; 2. Lower die; 201. Lower cavity; 202. Air jet hole; 3. Positioning rod; 4. Vacuum pump; 5. First push rod; 6. Second push rod; 7. Pressure plate; 8. Conduit; 9. Gas storage device; 901. Gas storage tank; 902. Drying tank; 903. Box body; 10. Elastic sealing ring; 11. Spring; 12. Cylinder; 13. Piston plate; 14. Installation groove; 15. Air outlet hole; 16. Limit plate; 17. Travel switch; 18. Positioning hole; 19. Through hole. Detailed implementation manners

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. 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.

[0030] An artificial quartz plate molding combination die, refer to Figures 1 to 5 .

[0031] A cavity 101 is formed at the bottom of the upper mold 1 to leave a moving space for the pressing plate 7. The pressing plate 7 is slidably installed in the cavity 101 and has the same cross-sectional shape as the cavity 101, and cooperates with the lower mold 2 to press and form the material. A sealing ring is installed on the side wall of the contact surface between the upper mold 1 and the moving end of the first push rod 5 to prevent air from the outside from entering through the gap between the first push rod 5 and the upper mold 1 when the vacuum pump 4 evacuates. One end of the first push rod 5 passes through the upper mold 1 and enters the cavity 101 to be connected to the pressing plate 7. The first push rod 5 is used to drive the pressing plate 7 to move up and down, so that the pressing plate 7 can press down and demold. A plurality of air inlet holes 102 are formed on the inner side wall of the cavity 101. When the pressing plate 7 is in the initial state and fits against the inner bottom wall of the cavity 101, the air inlet holes 102 are located below the pressing plate 7, thus preventing the pressing plate 7 from affecting the air extraction of the vacuum pump 4. The vacuum pump 4 is installed on the top of the upper mold 1 by bolts. An air inlet passage is formed in the upper mold 1, and one end of the air inlet passage is communicated with the air inlet holes 102, and the other end of the air inlet passage is connected to the vacuum pump 4 through a conduit 8. After the upper mold 1 and the lower mold 2 are clamped and fixed, the vacuum pump 4 is started to evacuate the cavity 101 and the lower cavity 201 until the set negative pressure state is reached before stopping. The vacuum environment is conducive to the quartz powder raw material and the auxiliary material mixture releasing the bubbles inside, avoiding the appearance of air holes inside the quartz plate after pressing and forming, so as to ensure the beauty and strength of the quartz plate. One end of the second push rod 6 is connected to the upper mold 1 and is used to drive the entire upper mold 1 to move downward to complete the clamping and opening actions. The positioning rods 3 are installed at the bottom of the upper mold 1 and are arrayed around the cavity 101. The positioning rods 3 cooperate with the positioning holes 18 to guide and position the upper mold 1 and the lower mold 2 when they are clamped, ensuring the accuracy of clamping. Here, the first push rod 5 and the second push rod 6 can adopt devices such as cylinders, hydraulic cylinders, and electric push rods.

[0032] An air transmission channel is formed in the upper mold 1. The air transmission channel is connected to the vacuum pump 4 through a conduit 8. A through hole 19 is provided on any positioning rod 3 close to the side of the gas storage device 9, and one end of the through hole 19 is communicated with the air transmission channel. A positioning hole 18 corresponding to the positioning rod 3 is formed around the top of the lower mold 2 and around the lower cavity 201. A connection channel connected to the gas storage device 9 is formed in the positioning hole 18 corresponding to the positioning rod 3 provided with the through hole 19. The air extracted by the vacuum pump 4 from the upper cavity 101 and the lower cavity 201 will enter the gas storage device 9 through the air transmission pipeline, the through hole 19 and the connection pipeline and be stored. When the quartz plate is demolded, it will be released again for auxiliary demolding, reducing the working time and improving the production efficiency. An elastic sealing ring 10 is installed in the positioning hole 18 provided with the connection channel to prevent gas leakage during gas transmission.

[0033] A lower cavity 201 is formed at the top of the lower mold 2. The lower cavity 201 is used to hold the mixture of quartz powder raw materials and auxiliary materials, and the cloth feeding device will evenly distribute the mixture of quartz powder raw materials and auxiliary materials in the lower cavity 201. A plurality of air jet holes 202 are formed at the bottom of the lower cavity 201. An automatic opening and closing device is installed in the air jet holes 202. When the air jet holes 202 do not jet air, the air jet holes 202 are closed to prevent the mixture of quartz powder raw materials and auxiliary materials from entering the air jet holes 202; when the air jet holes 202 jet air, the air jet holes 202 are opened. There is a tiny gap when the air jet holes 202 are closed, resulting in burrs on the side of the pressed quartz plate facing the air jet holes 202. In the subsequent processing of the quartz plate, processes such as thickness determination, edge cutting, and polishing are still required, and these burrs can be further removed. Therefore, the tiny gap when the air jet holes 202 are closed will not affect the forming of the quartz plate.

[0034] The automatic opening and closing device includes a spring 11, a cylinder 12, and a piston plate 13. A plurality of installation grooves 14 are formed in the lower die 2, and the installation grooves 14 correspond to the air injection holes 202 one by one. The piston plate 13 is sleeved on the outer side wall of the cylinder 12 and has an interference fit with the installation grooves 14, and the spaces on both sides of the piston plate 13 cannot exchange gas. One end of the cylinder 12 is provided with an opening, and the cylinder 12 is slidably installed in the air injection hole 202 and has a transitional fit with the air injection hole 202. The spring 11 is installed in the installation groove 14, and the two ends of the spring 11 are elastically abutted against the end of the cylinder 12 away from the air injection hole 202 and the inner side wall of the installation groove 14 respectively. The spring 11 enters the cylinder 12 from the opening and abuts against the cylinder 12. An air outlet hole 15 is formed in the installation groove 14, and the air outlet hole 15 is located on the side of the piston plate 13 close to the air injection hole 202. The air outlet hole 15 is connected to the air storage device 9. When air injection is required, the controller controls the pulse pump to open, and the gas in the gas storage tank 901 is input into the installation groove 14 through the air outlet hole 15. At this time, since the cylinder 12 closes the air injection hole 202 under the action of the spring 11, the space on the side of the piston plate 13 close to the air outlet hole 15 is in a sealed state. As the air pressure on the side of the piston plate 13 close to the air outlet hole 15 gradually increases, in order to adjust the air pressure, the gas pressure will push the cylinder 12 to move in the direction close to the spring 11 against the elastic force of the spring 11, increasing the space volume until the cylinder 12 leaves from the air injection hole 202, forming a gap, so that the gas in the installation groove 14 can be ejected. When the pressure on one side of the piston plate 13 is less than the elastic force of the spring 11, the cylinder 12 closes the air injection hole 202 again under the action of the spring 11. A limiting plate 16 is installed on the outer side wall of the cylinder 12. The limiting plate 16 is used to ensure that when the cylinder 12 closes the air injection hole 202, the cylinder 12 is flush with the inner side wall of the lower cavity 201, ensuring the flatness of the forming surface of the quartz plate. The diameter of the limiting plate 16 is smaller than the diameter of the piston plate 13, avoiding the formation of a sealed space between the limiting plate 16 and the piston plate 13, resulting in the same gas pressure on the piston plate 13 and the limiting plate 16, and the situation where the piston plate 13 cannot push the cylinder 12.

[0035] In another embodiment, a push rod can be installed in the installation groove 14. The moving end of the push rod is connected to the cylinder 12, and the cylinder 12 is driven by the push rod to move up and down to open and close the air injection hole 202. The push rod can adopt devices such as air cylinders, hydraulic cylinders, and electric push rods. The structure is simpler, but the installation of lines needs to be increased, and it needs to be selected according to the actual situation.

[0036] The gas storage device 9 is provided with an air inlet port and an air outlet port. A one-way valve is installed at the air inlet port to prevent the gas in the gas storage tank 901 and the drying tank 902 from flowing back. A pulse valve is installed at the air outlet port for pulse injection of the gas in the gas storage tank 901. The gas storage device 9 includes a box body 903, a gas storage tank 901, a pressure sensor and a drying tank 902. The box body 903 is installed on the side wall of the lower mold 2 by bolts, and the gas storage tank 901 and the drying tank 902 are installed in the box body 903. One end of the drying tank 902 is connected to the air inlet port, the other end is connected to one end of the gas storage tank 901, and the other end of the gas storage tank 901 is connected to the air outlet port. The gas transmitted by the vacuum pump 4 will first enter the drying tank 902 to remove the moisture in the gas. Since the mixture of quartz powder raw materials and auxiliary materials contains a certain amount of moisture, and the mixture of quartz powder raw materials and auxiliary materials is at a relatively high temperature, the moisture is more likely to volatilize under high temperature conditions. Therefore, in order to avoid the condensation pollution of the quartz plate by the gas during demolding, the collected gas needs to be dried. A pressure sensor is installed in the gas storage tank 901 to monitor the situation in the gas storage tank 901, so as to monitor whether the gas storage tank 901 leaks and is damaged. The pressure of each jet is at the same value, generally 0.3 MPa, and then gradually decreases to 0.1 MPa to ensure the stability of demolding.

[0037] The outer side wall of the gas storage tank 901 is covered with heat-insulating materials such as polyurethane, alumina and foamed cement. A heating device is installed on the side wall of the gas storage tank 901, and a temperature sensor is installed in the gas storage tank 901. The gas temperature in the gas storage tank 901 needs to be maintained equal to the surface temperature of the quartz plate during demolding, so as to avoid the situation that the inconsistent heat loss rate of the quartz plate surface caused by the gas can lead to stress damage inside the quartz plate. At the same time, since the gas expands when heated, maintaining the gas temperature can also prevent the air pressure in the gas storage tank 901 from dropping, thus ensuring the effect of jet-assisted demolding. Therefore, when the temperature sensor detects that the temperature in the gas storage tank 901 is lower than the surface temperature of the quartz plate during demolding, the controller starts the heating device to heat the gas in the gas storage tank 901. The heating device uses equipment with a slow heating speed, which is convenient for precise heating and avoids the situation that the rapid temperature rise of the gas in the gas storage tank 901 may cause excessive air pressure in the gas storage tank 901.

[0038] A travel switch 17 is installed in any positioning hole 18. The travel switch 17 is electrically connected to the pulse valve. When the travel switch 17 is triggered, the pulse valve is powered off to prevent the gas in the gas storage tank 901 from leaving. When the second push rod 6 drives the upper mold 1 to move upward to open the mold, the travel switch 17 is closed and the pulse valve is powered on. At this time, the pulse valve can cooperate with the mechanical ejection device to demold the quartz plate under the control of the controller. Generally, the pulse injection is triggered when the mold is separated by 0.2 mm.

[0039] Furthermore, a vibration device, such as an eccentric flywheel, can be installed inside the box body 903 and driven by the airflow when the gas in the gas storage tank 901 is ejected, and the lower die 2 is vibrated to assist in demolding the quartz plate.

[0040] The usage method of the present invention: The controller controls the distributor to evenly arrange the raw materials in the lower cavity 201. After the distribution is completed, the second push rod 6 drives the upper die 1 to move downward to form a mold closure with the lower die 2. The vacuum pump 4 is started to evacuate the upper cavity 101 and the lower cavity 201 until the air pressure in the upper cavity 101 and the lower cavity 201 reaches 0.1 MPa. The extracted gas will pass through the gas transmission pipeline, the through hole 19, and the connecting pipeline and enter the drying tank 902 for drying, and finally enter the gas storage tank 901 for storage. When the air pressure in the mold reaches the set value, the first push rod 5 drives the pressure plate 7 to move downward to press and form the raw materials in cooperation with the lower cavity 201. The pressurization time is generally 2 - 4 minutes, which specifically varies due to different plate thicknesses and formulations. The raw materials will be pressed into a quartz plate. After the pressing is completed, the first push rod 5 drives the pressure plate 7 to move to the initial position, and the second push rod 6 drives the upper die 1 to move upward, and the upper die 1 and the lower die 2 are opened. When the upper die 1 moves to the initial position, the mechanical ejection device ejects and demolds the quartz plate. At the same time, the pulse pump is started, and the ejection holes 202 perform pulse ejection, and the ejection pressure gradually decreases, and cooperate with the mechanical ejection device to complete the demolding of the quartz plate. The gas can form a gas film between the quartz plate and the mold, reducing the friction coefficient between the quartz plate and the mold. After testing, this system reduces the demolding resistance by 35 - 40%. After using the present invention, the surface scratch rate of the quartz plate decreases by 3 - 4%, and the demolding time is reduced by 5 - 7 seconds, which not only increases the qualified product rate but also improves the production efficiency.

[0041] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claimed rights.

Claims

1. An artificial quartz plate compression molding combined mold, characterized in that, It includes an upper die (1), a lower die (2), a positioning rod (3), a vacuum pump (4), a first push rod (5), a second push rod (6), a pressing plate (7), a conduit (8) and a gas storage device (9); An upper cavity (101) is formed at the bottom of the upper die (1). The pressing plate (7) is slidably installed in the upper cavity (101) and has the same cross-sectional shape as the upper cavity (101). One end of the first push rod (5) passes through the upper die (1) and enters the upper cavity (101) to be connected with the pressing plate (7). A plurality of air inlet holes (102) are formed on the inner side wall of the upper cavity (101). An air inlet channel is formed in the upper die (1), and one end of the air inlet channel is communicated with the air inlet holes (102). The vacuum pump (4) is installed on the top of the upper die (1). The other end of the air inlet channel is connected with the vacuum pump (4) through the conduit (8). The positioning rod (3) is installed at the bottom of the upper die (1) and is arrayed around the upper cavity (101). An air delivery channel is formed in the upper die (1). A through hole (19) is provided on any one of the positioning rods (3), and one end of the through hole (19) is communicated with the air delivery channel. One end of the second push rod (6) is connected with the upper die (1); A lower cavity (201) is formed at the top of the lower die (2). Positioning holes (18) corresponding to the positioning rods (3) are formed around the lower cavity (201) at the top of the lower die (2). The gas storage device (9) is installed on the side wall of the lower die (2). A connection channel connected with the gas storage device (9) is formed in the positioning hole (18) corresponding to the positioning rod (3) provided with the through hole (19). A plurality of air jet holes (202) are formed at the bottom of the lower cavity (201).

2. The composite die for molding artificial quartz plates according to claim 1, wherein The gas storage device (9) is provided with an air inlet port and an air outlet port. A one-way valve is installed at the air inlet port, and a solenoid valve is installed at the air outlet port.

3. The artificial quartz plate compression molding combined mold according to claim 2, characterized in that, The gas storage device (9) includes a box body (903), a gas storage tank (901), a pressure sensor and a drying tank (902). The box body (903) is installed on the side wall of the lower die (2). The gas storage tank (901) and the drying tank (902) are installed in the box body (903). One end of the drying tank (902) is connected with the air inlet port, and the other end is connected with one end of the gas storage tank (901). The other end of the gas storage tank (901) is connected with the air outlet port. A pressure sensor is installed in the gas storage tank (901).

4. The artificial quartz plate compression molding combined mold according to claim 3, characterized in that, The outer side wall of the gas storage tank (901) is covered with a heat insulation material. A heating device is installed on the side wall of the gas storage tank (901). A temperature sensor is installed in the gas storage tank (901).

5. The artificial quartz plate compression molding combined mold according to claim 3, characterized in that, The solenoid valve adopts a pulse valve.

6. The composite die for molding artificial quartz plates according to claim 5, characterized in that, A travel switch (17) is installed in any one of the positioning holes (18), and the travel switch (17) is electrically connected with the pulse valve.

7. The composite die for molding artificial quartz plates according to claim 1, characterized in that, An elastic sealing ring (10) is installed in the positioning hole (18) provided with the connection channel.

8. The artificial quartz plate compression molding combined mold according to claim 1, characterized in that, An automatic opening and closing device is installed in the air vent hole (202). The automatic opening and closing device includes a spring (11), a cylinder (12) and a piston plate (13). A plurality of installation grooves (14) are formed in the lower die (2), and the installation grooves (14) correspond to the air vent holes (202) one by one. The automatic opening and closing device is installed in the installation grooves (14). The piston plate (13) is sleeved on the outer side wall of the cylinder (12) and has an interference fit with the installation groove (14). One end of the cylinder (12) is provided with an opening. The cylinder (12) is slidably installed in the air vent hole (202). The spring (11) is installed in the installation groove (14), and the two ends of the spring (11) are elastically abutted against the cylinder (12) and the inner side wall of the installation groove (14) respectively. An air outlet hole (15) is formed in the installation groove (14), and the air outlet hole (15) is located on the side of the piston plate (13) close to the air vent hole (202). The air outlet hole (15) is connected to the gas storage device (9).

9. The artificial quartz plate compression molding combined mold according to claim 8, characterized in that, A limiting plate (16) is installed on the outer side wall of the cylinder (12), and the diameter of the limiting plate (16) is smaller than the diameter of the piston plate (13).

10. A molded composite mold for artificial quartz plates according to claim 3, characterized in that, It further includes a vibration device. One end of the vibration device is connected to the gas storage tank (901), and the other end is connected to the air outlet port. The vibration device is used to assist the lower die (2) in vibrating and demolding and is driven and started by the gas in the gas storage tank (901).

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