Artificial stone insulation non-metal mold coating method and coating equipment thereof

Abstract

The application discloses a kind of artificial stone insulation nonmetal mold film covering method and its film covering equipment, film covering equipment includes insulation bearing device, film laying device, electrostatic generating device and sweep device;Insulation bearing device is used to transport insulation nonmetal mold;Film laying device is set to the feed end of insulation bearing device, and the opening of insulation nonmetal mold is laid and is deposited on electret film;Electrostatic generating device and sweep device are all set to the top of insulation bearing device, and electrostatic generating device and sweep device are set along the direction of insulation nonmetal mold transport.The artificial stone insulation nonmetal mold film covering equipment is applied to electret film by electrostatic generating device and makes electret film can be tightly adhered on the mold cavity of insulation nonmetal mold, and the electrostatic adsorption effect between electret film and insulation nonmetal mold can be kept for a certain time, and then it will automatically fail, so that plastic electret film and mold are separated from each other, and the workload of tearing electret film is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of electrostatic coating, and in particular to a coating method for an artificial stone insulating non-metallic mold and a coating device thereof. Background Art

[0002] Currently, the molds used in the artificial stone pressing method are mostly rubber molds. To extend the service life of the rubber mold, a layer of plastic electret film is often laid between the mold and the resin material to facilitate the cleaning of the resin on the mold and reduce the erosion of the resin on the rubber mold. There are currently two methods for laying plastic film:

[0003] The first method involves evenly spraying the release agent onto the mold surface manually or with automated spraying equipment, then curing it into a film using methods such as heating and drying. This method requires investment in drying equipment, and spraying uniformity is difficult to control. If release agent leaks in certain areas, it can make resin cleaning difficult and cause mold corrosion. Furthermore, the release agent can splash during spraying, resulting in waste and equipment contamination. Furthermore, chemical release agents pose difficulties in transportation and export.

[0004] The second method involves applying glue to the sidewalls of the rubber mold manually or using automated glue coating equipment. This is then covered with a soft PVA film, which adheres tightly to the sidewalls. Subsequently, a vacuum is applied to the center of the mold to keep the PVA film close to the mold. This method requires applying glue to the rubber mold, which also presents challenges with the transportation and export of glue chemicals, and requires vacuum equipment. Furthermore, both methods require the removal of the protective film covering the mold after the artificial stone is produced. Separating the protective film from the mold is difficult and labor-intensive with both methods. Summary of the Invention

[0005] The present invention aims to provide a method for coating an artificial stone insulating non-metallic mold to solve the problem that the existing coating process requires spraying a release agent or applying glue in the mold, and the problem that the protective film is difficult to separate from the mold.

[0006] The present invention also provides an artificial stone insulating non-metallic mold coating device to implement the above coating method.

[0007] To achieve this object, the present invention adopts the following technical solutions:

[0008] The present invention provides a method for coating an artificial stone insulating non-metallic mold, comprising the following steps:

[0009] Placing the insulating non-metallic mold: placing the insulating non-metallic mold on an insulating carrier;

[0010] Laying the electret film: Laying the electret film in the mold cavity of the insulating non-metallic mold;

[0011] Sweeping the electret film: Sweeping the electret film forwardly to squeeze out the air between the electret film and the insulating non-metallic mold, so that the electret film fits the mold cavity of the insulating non-metallic mold;

[0012] Electret polarization of electret film: applying corona to the electret film to electret the film.

[0013] In the artificial stone insulating non-metallic mold coating method, the electret film electret step includes multiple reciprocating leveling steps before the electret film electret step, and the re-leveling step includes the following steps: leveling the electret film in the reverse direction; and then leveling the electret film in the forward direction.

[0014] In the artificial stone insulating non-metallic mold coating method, the electret film electret step further includes a single or multiple repeated electret step, and the repeated electret step is the same as the electret film electret step.

[0015] The present invention also provides an artificial stone insulating non-metallic mold coating device for implementing the above-mentioned artificial stone insulating non-metallic mold coating method, comprising an insulating bearing device, a film laying device, an electrostatic generating device, a sweeping device and a translation device;

[0016] The insulating bearing device is used to receive the insulating non-metallic mold;

[0017] The film laying device is arranged at the feed end of the insulating supporting device and is used to lay the electret film into the mold cavity of the insulating non-metallic mold;

[0018] The electrostatic generating device and the sweeping device are both arranged above the insulating supporting device, and are arranged along the conveying direction of the insulating non-metallic mold; the electrostatic generating device attaches charges to the electret film; the sweeping device is used to exhaust the air between the electret film and the non-metallic mold cavity;

[0019] The translation device is used to drive the film laying device, the electrostatic generating device and the sweeping device to move;

[0020] Or, the insulating bearing device is driven to move, so that the insulating non-metallic mold moves relative to the film laying device, the electrostatic generating device and the leveling device.

[0021] In the artificial stone insulating non-metallic mold coating equipment, the leveling device includes a brush roller, a first connecting seat, a second connecting seat and a rotary drive device; the first connecting seat and the second connecting seat are respectively arranged on both sides of the insulating bearing device; one end of the brush roller is rotatably connected to the first connecting seat; one end of the brush roller passes through the first connecting seat and is connected to the driving end of the rotary drive device; the other end of the brush roller is rotatably matched with the second connecting seat.

[0022] In the artificial stone insulation non-metallic mold laminating equipment, the first connecting seat and the second connecting seat have the same structure and both include a guide seat, a fixing frame and a lifting drive device;

[0023] The lifting drive device is arranged on the top of the fixed frame, a slide groove is provided in the fixed frame, and the guide seat is slidably assembled in the slide groove; the output end of the lifting drive device passes through the fixed frame and is connected to the top of the guide seat; the brush roller is rotatably connected to the guide seat.

[0024] In the artificial stone insulating non-metallic mold coating equipment, the electrostatic generating device includes an electrostatic emitter, a high-voltage DC power supply and a grounded metal plate; an air avoidance area is opened in the middle of the insulating supporting device, and the grounded metal plate is arranged in the air avoidance area; the grounded metal plate is located directly below the electrostatic emitter; the high-voltage DC power supply is electrically connected to the electrostatic emitter; the electrostatic emitter is arranged on one side of the leveling device, and the corona emission end of the electrostatic emitter faces the electret film.

[0025] In the artificial stone insulating non-metallic mold coating equipment, the electrostatic generating device also includes a secondary electrostatic emitter, the structure of the secondary electrostatic emitter is the same as that of the electrostatic emitter; the secondary electrostatic emitter is electrically connected to the high-voltage DC power supply, and the secondary electrostatic emitter is arranged on the other side of the leveling device.

[0026] In the artificial stone insulating non-metallic mold coating equipment, the electrostatic emission element is a plurality of electrostatic emission needles, which are distributed at intervals and arranged in rows. The needle tips of the electrostatic emission needles point to the electret film, and the other ends of the electrostatic emission needles are electrically connected to a high-voltage DC power supply.

[0027] In the artificial stone insulating non-metallic mold coating equipment, the electrostatic emission element is a single or multiple metal wires arranged side by side, and both ends of the metal wires are electrically connected to a high-voltage direct current power supply.

[0028] A technical solution in the present invention can have the following beneficial effects:

[0029] The artificial stone insulating non-metallic mold laminating equipment applies corona through an electrostatic generating device to generate an electrostatic adsorption effect, so that the plastic electret film is tightly attached to the inner cavity of the mold, replacing the adhesive or vacuum adhesion method in the prior art. The electret film can be tightly adhered to the mold cavity of the insulating non-metallic mold without the need for additional spraying of adhesives or release agents. Moreover, the electrostatic adsorption effect between the electret film and the insulating non-metallic mold can be maintained for a certain period of time and then automatically loses its effect, separating the plastic electret film and the mold from each other, reducing the workload of tearing the electret film from the insulating non-metallic mold and realizing automatic lamination. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of one embodiment of the present invention;

[0031] Figure 2 1 is a schematic structural diagram of a sweeper device in one embodiment of the present invention;

[0032] Figure 3 is a schematic structural diagram of the other side of the sweeper device in one embodiment of the present invention;

[0033] Figure 4 Schematic diagram of the principle of the laminating process in one embodiment of the present invention;

[0034] Figure 5 is a schematic diagram of the corona generated by the electrostatic emission element in one embodiment of the present invention;

[0035] Figure 6 is a schematic diagram of the corona generated by the electrostatic emission element in one embodiment of the present invention;

[0036] In the accompanying drawings: an insulating carrier device 1, a film laying device 2, a sweeping device 4, an insulating non-metallic mold 5, and an electret film 6;

[0037] Translation device 11; electrostatic emitter 31, high-voltage DC power supply 32, grounded metal plate 33, auxiliary electrostatic emitter 34; brush roller 41, first connecting seat 42, second connecting seat 43, rotation drive device 44; free molecular chain 61, charge trap 62, space charge 63;

[0038] Guide seat 401 , fixing frame 402 , lifting drive device 403 . DETAILED DESCRIPTION

[0039] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0040] In the description of the present invention, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more such features, and are used to distinguish between features, without regard to order or importance.

[0041] In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0042] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0043] Please refer to Figures 1 to 6 The present invention also provides a method for coating an artificial stone insulating non-metallic mold, comprising the following steps:

[0044] Placing the insulating non-metallic mold: placing the insulating non-metallic mold on an insulating carrier;

[0045] Laying the electret film: Laying the electret film in the mold cavity of the insulating non-metallic mold;

[0046] Sweeping the electret film: Sweeping the electret film forwardly to squeeze out the air between the electret film and the insulating non-metallic mold, so that the electret film fits the mold cavity of the insulating non-metallic mold;

[0047] Electret polarization of electret film: applying corona to the electret film to electret the film.

[0048] In a specific embodiment of the present invention, the preparation method is specifically:

[0049] Placing the insulating non-metallic mold 5: placing the insulating non-metallic mold 5 on the insulating supporting device 1;

[0050] Laying the electret film: the insulating non-metallic mold 5 moves relative to the film laying device 2, and the film laying device 2 lays the electret film 6 into the mold cavity of the insulating non-metallic mold 5;

[0051] Sweeping the electret film: The insulating non-metallic mold 5 with the electret film 6 laid on the insulating carrier device 1 moves relative to the sweeping device 4 to squeeze out the air between the electret film 6 and the insulating non-metallic mold 5 and make the electret film 6 fit into the mold cavity of the insulating non-metallic mold 5.

[0052] Electret film electret: the insulating non-metallic mold 5 with the electret film 6 laid on the insulating carrier 1 moves relative to the electrostatic generating device, and the electrostatic corona generated by the electrostatic generating device polarizes the electret film 6.

[0053] The artificial stone insulating non-metallic mold coating method is implemented using the aforementioned artificial stone insulating non-metallic mold coating equipment. This method utilizes the electret mechanism of polymer materials to inject charges onto the surface of the electret film 6, filling it with sufficient charge. Because the electret film 6 is a polymer, the charge remains on the polymer surface, allowing the film 6 to maintain an electret state for a fixed period of time. The charges are attracted to the insulating non-metallic mold 5, causing the film 6 to adhere tightly to the mold cavity of the insulating non-metallic mold 5.

[0054] In actual application, the staff places the insulating non-metallic mold 5 on the insulating carrier 1, and the insulating carrier 1 transports the insulating non-metallic mold 5 to the bottom of the film laying device 2; the film laying device 2 pulls out the rolled electret film 6, and the speed of the film laying device 2 flatly lays the film and the speed of the insulating carrier 1 transporting the insulating non-metallic mold 5 is adapted to make the electret film 6 fall on the surface of the insulating non-metallic mold 5; after the insulating non-metallic mold 5 passes through the film laying device 2, the film laying device 2 cuts the electret film 6 so that the electret film 6 covers the surface of the insulating non-metallic mold 5; then, the insulating carrier 1 The insulating non-metallic mold 5 covered with the electret film 6 is passed through the electrostatic field generated by the electrostatic generating device, so that the electret film 6 is polarized and the electret film 6 fits the mold cavity of the insulating non-metallic mold 5; then, the insulating carrying device 1 drives the insulating non-metallic mold 5 through the leveling device 4, and through the cooperation of the leveling device 4 and the insulating carrying device 1, the bubbles between the electret film and the insulating non-metallic mold 5 are expelled, so that the electret film 6 completely fits the mold cavity of the insulating non-metallic mold 5; finally, the insulating carrying device 1 removes the insulating non-metallic mold 5 that has completed the coating, thereby obtaining the coated insulating non-metallic mold 5.

[0055] Preferably, the electret film electret step includes multiple reciprocating leveling steps before the electret film electret step. The re-leveling steps include the following steps: leveling the electret film in the reverse direction; then leveling the electret film in the forward direction. In a specific application, the insulating support device 1 drives the insulating non-metallic mold 5 in the reverse direction, and then passes through the leveling device 4 in the reverse direction. The leveling device 4 again leveled the electret film 6. The insulating support device 1 then drives the insulating non-metallic mold 5 in the forward direction, and then passes through the leveling device 4 again.

[0056] In a specific embodiment of the present invention, the insulating supporting device 1 is specifically two conveyor belts, and the insulating non-metallic mold 5 is transported by the two sets of conveyor belts, and the two conveyor belts can rotate synchronously in the forward or reverse direction, wherein the forward direction is along the conveying direction, and the reverse direction is along the conveying direction, thereby driving the insulating non-metallic mold 5 to move forward or reverse. In a reciprocating leveling step, the insulating supporting device 1 drives the insulating non-metallic mold 5 in the reverse direction through the leveling device 4, and the leveling device 4 performs the leveling work on the electret film 6 again. Subsequently, the insulating supporting device 1 drives the insulating non-metallic mold 5 in the forward direction through the leveling device 4, and the leveling device 4 repeats the leveling work on the electret film 6. The angle between the side wall of the mold cavity of the insulating non-metallic mold 5 and the bottom of the mold cavity is 90 degrees. When the electret film 6 is fitted, it is easy for the air remaining in the angle to make it unable to completely fit into the mold cavity of the insulating non-metallic mold 5, resulting in an error between the shape of the artificial stone produced and the shape of the actual insulating non-metallic mold. After multiple reciprocating sweeping steps, the air in the angle between the side wall and the bottom of the cavity of the insulating non-metallic mold 5 is squeezed out, reducing the gap between the electret film 6 and the insulating non-metallic mold 5, so that the electret film 6 can completely fit the insulating non-metallic mold 5.

[0057] Optionally, the electret film electret step may be followed by a single or multiple repetitions of the electret step, which in a specific application is achieved by an insulating support device 1 and an electrostatic generator. The insulating support device 1 moves the insulating non-metallic mold 5, on which the electret film 6 is laid, relative to the electrostatic generator, and the electrostatic corona generated by the electrostatic generator polarizes the electret film 6.

[0058] By repeating the electret polarization once or multiple times, the electret film 6 can be replenished with electric charge, so that the coated insulating non-metallic mold 5 can be repeatedly used for a long time.

[0059] Preferably, the distance between the charge emitting end of the electrostatic emitter 31 and the electret film 6 is 4 to 8 cm, and the voltage of the high-voltage DC power supply 32 is 20 to 50 kV. If the distance between the charge emitting end of the electrostatic emitter 31 and the electret film 6 is too small, it is easy to break through the electret film 6 and generate an arc, causing the electret film 6 and the insulating non-metallic mold 5 to burn. If the distance between the charge emitting end of the electrostatic emitter 31 and the electret film 6 is too large, charge dispersion is easy to occur, resulting in a weakening of the electrostatic adsorption effect of the electret film 6. In a specific embodiment of the present invention, when the distance between the charge emitting end of the electrostatic emitter 31 and the electret film 6 is 4 to 8 cm, the electrostatic adsorption effect is better.

[0060] When the voltage of the high-voltage DC power supply 32 is too high, it can easily break down the electret film 6 and generate an arc, causing the electret film 6 and the insulating non-metallic mold 5 to burn. When the voltage of the high-voltage DC power supply 32 is too low, charge dispersion can easily occur, weakening the electrostatic adsorption effect of the electret film 6. In a specific embodiment of the present invention, when the voltage of the high-voltage DC power supply 32 is between 20 and 50 kV, the electrostatic adsorption effect is better.

[0061] The present invention also provides an artificial stone insulation non-metallic mold coating device for implementing the above coating method, comprising an insulation carrying device 1, a film laying device 2, an electrostatic generating device, a sweeping device 4 and a translation device 11;

[0062] The insulating bearing device 1 is used to receive the insulating non-metallic mold 5;

[0063] The film laying device 2 is arranged at the feed end of the insulating carrier device 1 and lays the electret film 6 toward the opening of the insulating non-metallic mold 5;

[0064] The electrostatic generating device and the sweeping device 4 are both arranged above the insulating supporting device 1, and are arranged along the conveying direction of the insulating non-metallic mold; the electrostatic generating device attaches charges to the electret film 6; the sweeping device 4 is used to exhaust the air between the electret film 6 and the insulating non-metallic mold 5;

[0065] The translation device 11 is used to drive the film laying device 2, the electrostatic generating device and the sweeping device 4 to move;

[0066] Or, the insulating carrying device 1 is driven to move, so that the insulating non-metallic mold 5 moves relative to the film laying device 2, the static electricity generating device and the leveling device 4.

[0067] The artificial stone insulating non-metallic mold laminating equipment is equipped with an electrostatic generator and a sweeper 4, which are arranged along the conveying direction of the insulating non-metallic mold. Because the electret film 6 is made of a high molecular weight polymer, the electrostatic generator applies static electricity to the film 6. This, utilizing the polymer's electret properties, creates an electret effect on the film 6, causing it to adhere tightly to the mold cavity of the insulating non-metallic mold 5. The sweeper 4 sweeps the film 6 flat, displacing the air between the film 6 and the insulating non-metallic mold 5, ensuring a closer fit and a smoother surface.

[0068] In Example 1, the insulating carrying device 1 is specifically a conveyor belt, and the translation device 11 is a driving motor. The driving motor drives the conveyor belt to rotate, thereby driving the insulating carrying device 1 to move horizontally, so as to achieve the purpose of relative movement of the insulating carrying device 1 relative to the film laying device 2, the electrostatic generating device and the leveling device 4, so that the insulating carrying device 1 can pass under the film laying device 2, the electrostatic generating device and the leveling device 4 to perform operations such as film laying, electret polarization and sweeping.

[0069] In Example 2, the insulating bearing device 1 is specifically a receiving platform, and the translation device 11 can refer to the existing horizontal moving device or translation manipulator, and can drive the film laying device 2, the electrostatic generating device and the leveling device 4 to move horizontally through the screw transmission structure of the screw, the screw nut and the drive motor; it can also drive the film laying device 2, the electrostatic generating device and the leveling device 4 to move horizontally through the slide rail, the slider and the drive structure of the drive motor; thereby achieving the purpose of relative movement of the insulating bearing device 1 relative to the film laying device 2, the electrostatic generating device and the leveling device 4, so that the insulating bearing device 1 can pass under the film laying device 2, the electrostatic generating device and the leveling device 4 to perform film laying, electret polarization and sweeping operations.

[0070] The electret film 6 is a high molecular polymer. Impurity ions, free molecular chains 61 and polycrystalline voids exist on the surface of the electret film 6. The impurity ions, free molecular chains 61 and polycrystalline voids on the surface of the electret film 6 form traps 62 that can capture charges, making the electret film 6 as a whole prone to polarization. In a preferred embodiment of the present invention, the electret film 6 is a polypropylene plastic electret film with tourmaline particles added to the surface.

[0071] In addition, in one of the preferred embodiments, a pre-electret film can be used and directly laid flat on the mold, thereby reducing the need for an electrostatic generating device to be electret.

[0072] The insulating non-metallic mold is made of an insulating non-metallic material, including but not limited to polypropylene, rubber, resin, and dry wood, to prevent the transfer of resident charge on the electret film 6, which would prevent the electret film 6 from firmly adhering to the mold cavity of the insulating non-metallic mold 5 via electrostatic forces. The contact area between the insulating support device 1 and the insulating non-metallic mold 5 should also be made of non-metallic insulating material to prevent the weakening of electrostatic adsorption caused by charge transfer. In addition, a grounded metal plate should be placed in the middle of the non-metallic insulating material of the insulating support device 1 to attract the charge.

[0073] The film laying device 2 pulls out the rolled electret film 6, cuts the electret film 6 according to the length of the insulating non-metallic mold 5, and lays the electret film 6 on the surface of the insulating non-metallic mold 5. In a specific embodiment of the present invention, the film laying device 2 uses a multi-roller conveyor structure to flatten the rolled electret film 6, and the film laying device 2 flattens the film at a speed that matches the moving speed of the insulating non-metallic mold 5 on the insulating carrier device 1, so that the electret film 6 covers the surface of the insulating non-metallic mold 5.

[0074] The artificial stone insulating non-metallic mold laminating equipment applies corona through an electrostatic generating device to generate an electrostatic adsorption effect, so that the plastic electret film is closely attached to the inner cavity of the mold, replacing the adhesive or vacuum adhesion method in the prior art, so that the electret film 6 can be tightly adhered to the mold cavity of the insulating non-metallic mold 5 without the need for additional spraying of adhesive or release agent; moreover, the electrostatic adsorption effect between the electret film 6 and the insulating non-metallic mold 5 can be maintained for a certain period of time and then automatically fails, so that the plastic electret film and the mold are separated from each other, reducing the workload of tearing the electret film 6 from the insulating non-metallic mold 5 and realizing automatic lamination.

[0075] The electret film 6 can isolate the artificial stone production raw materials from the insulating non-metallic mold 5, avoid direct contact between the insulating non-metallic mold 5 and the artificial stone production raw materials, reduce the corrosion of the artificial stone production raw materials on the insulating non-metallic mold 5, and thus extend the service life of the insulating non-metallic mold 5.

[0076] Specifically, the sweeping device 4 includes a brush roller 41, a first connecting seat 42, a second connecting seat 43 and a rotary drive device 44; the first connecting seat 42 and the second connecting seat 43 are respectively arranged on both sides of the insulating bearing device 1; one end of the brush roller 41 is rotatably connected to the first connecting seat 42; one end of the brush roller 41 passes through the first connecting seat 42 and is connected to the driving end of the rotary drive device 44; the other end of the brush roller 41 is rotatably matched with the second connecting seat 43.

[0077] The first connecting seat 42 and the second connecting seat 43 fix the two ends of the brush roller 41 respectively, and the rotary drive device 44 is used to drive the brush roller 41 to rotate. The outer wall of the brush roller 41 is made of soft non-metallic materials, including but not limited to brushes and sponges, please refer to Figure 2 In a preferred embodiment of the present invention, the outer wall of the brush roller 41 is provided with spiral bristles. The outer wall of the brush roller 41 can fit the mold cavity of the insulating non-metallic mold 5. The insulating supporting device 1 drives the insulating non-metallic mold 5 to move, and when passing through the leveling device 4, the rotating brush roller 41 expels the bubbles between the insulating non-metallic mold 5 and the electret film 6, thereby achieving the leveling of the electret film 6. In addition, since the outer wall of the brush roller 41 can fit the mold cavity of the insulating non-metallic mold 5, the brush roller 41 can fit the electret film 6 to the connection between the side wall and the bottom of the mold cavity of the insulating non-metallic mold 5, thereby preventing the problem of rounded corners on the bottom of the artificial stone due to the electret film 6 being unable to cover the connection between the side wall and the bottom of the mold cavity of the insulating non-metallic mold 5.

[0078] Specifically, the first connecting seat 42 and the second connecting seat 43 have the same structure, and both include a guide seat 401, a fixing frame 402 and a lifting drive device 403;

[0079] The lifting drive device 403 is arranged at the top of the fixed frame 402, and a slide groove 4021 is provided in the fixed frame 402. The guide seat 401 is slidably assembled in the slide groove 4021; the output end of the lifting drive device 403 passes through the fixed frame 402 and is connected to the top of the guide seat 401; the brush roller 41 is rotatably connected to the guide seat 401.

[0080] The lifting drive devices 403 on both sides synchronously drive the guide seat 401 to move upward or downward, thereby achieving the rise or fall of the brush roller 41. With the above structure, the lifting drive device 403 can drive the brush roller 41 to move upward or downward, changing the distance between the brush roller 41 and the insulating non-metallic mold 5, so that the brush roller 41 can be more closely attached to the mold cavity of the insulating non-metallic mold 5. During operation, while the insulating support device 1 drives the insulating non-metallic mold 5 to move relative to the brush roller 41, the lifting drive device 403 drives the brush roller 41 downward, squeezing out the air between the electret film 6 and the insulating non-metallic mold 5, reducing the gap between the electret film 6 and the insulating non-metallic mold 5, and increasing the bonding area.

[0081] The fixed frame 402 serves to connect the lifting drive device 403 and the guide seat 401, and the slide groove 4021 serves to limit the guide seat 401 from shifting in other directions during movement, thereby ensuring the sliding stability of the guide seat 401 and making the lifting process of the brush roller 41 smoother.

[0082] Specifically, the electrostatic generating device includes an electrostatic emitter 31, a high-voltage DC power supply 32 and a grounded metal plate 33; an air avoidance area is opened in the middle of the insulating supporting device 1, and the grounded metal plate 33 is arranged in the air avoidance area; the grounded metal plate 33 is located directly below the electrostatic emitter 31; the high-voltage DC power supply 32 is electrically connected to the electrostatic emitter 31; the electrostatic emitter 31 is arranged on one side of the leveling device 4, and the corona emission end of the electrostatic emitter 31 faces the electret film 6.

[0083] In Example 1, the insulating support device 1 is specifically two conveyor belts, and the insulating non-metallic mold 5 is transported by the two sets of conveyor belts. The area between the two conveyor belts is the air-clearance zone, and the grounded metal plate 33 is placed in the air-clearance zone. The insulating non-metallic mold 5 is placed on both sides of the conveyor belts, with the center of the insulating non-metallic mold 5 located between the electrostatic emitter 31 and the grounded metal plate 33.

[0084] In Example 2, an air avoidance zone is opened in the middle of the receiving platform, and a grounded metal plate 33 is arranged in the air avoidance zone. The two sides of the insulating non-metallic mold 5 are placed on the receiving platform respectively, and the middle of the insulating non-metallic mold 5 is located between the electrostatic emitter 31 and the grounded metal plate 33.

[0085] A high-voltage DC power supply 32 provides DC power to the electrostatic emitter 31. A grounded metal plate 33 cooperates with the electrostatic emitter 31 to form an electric field, guide charge, and provide shielding protection. The electrostatic emitter 31 generates a high-voltage corona, ionizing the air in the vicinity of the electrostatic emitter 31. An electric field forms between the electrostatic emitter 31 and the grounded metal plate 33, pushing ionized space charges 63 from the electrostatic emitter 31 toward the grounded metal plate 33. When the space charges 63 reach the electret film 6, they are captured and fixed by charge traps 62 on the electret film 6, achieving electret polarization and imparting polarity to the electret film 6 as a whole. The insulating non-metallic mold 5 and the contact portion of the insulating support device 1 with the insulating non-metallic mold 5 are made of non-metallic insulating material, preventing charge transfer and allowing the electret film 6 to adhere to the mold cavity of the insulating non-metallic mold 5. Even after the electret film 6 leaves the electric field, the electret polarization can be maintained for a period of time, preserving its charge. Therefore, during the artificial stone production process, the electret film 6 remains firmly attached to the insulating non-metallic mold.

[0086] Specifically, the electrostatic generating device further includes a secondary electrostatic emitter 34 , the structure of which is the same as that of the electrostatic emitter 31 ; the secondary electrostatic emitter 34 is electrically connected to the high-voltage DC power supply 32 , and the secondary electrostatic emitter 34 is arranged on the other side of the leveling device 4 .

[0087] By adopting the above structure, the electret film 6 can be charged again through the secondary electrostatic emitter 34 according to the time required for the electret film 6 to be in close contact with the insulating non-metallic mold, so that the electret film 6 can be in close contact with the insulating non-metallic mold within a predetermined time, thereby avoiding the electret film 6 from being separated from the insulating non-metallic mold in advance and reducing the production quality of the artificial stone.

[0088] Optionally, the electrostatic emission element 31 is a plurality of electrostatic emission needles, which are spaced and arranged in a row, with the needle tips of the electrostatic emission needles pointing to the electret film 6, and the other ends of the electrostatic emission needles being electrically connected to the high-voltage DC power supply 32. Figure 5 In one embodiment of the present invention, the electrostatic emitter 31 is formed by a plurality of electrostatic emitter needles arranged in a row. The electrostatic emitter needles are spaced apart, and the length of the parallel row of electrostatic emitter needles matches the width of the electret film 6. The tips of the electrostatic emitter needles serve as charge emitting ends, and the tips of the electrostatic emitter needles point toward the electret film 6. The tips of the electrostatic emitter needles generate a pseudo-conical corona with the tips as the apex. When the electret film 6 passes by, the charge flow sweeps across the surface of the electret film 6, electrifying the film 6.

[0089] Optionally, the electrostatic emitter 31 is a single or multiple metal wires arranged side by side, and both ends of the metal wires are electrically connected to the high voltage DC power supply 32. Figure 6 In one embodiment of the present invention, the electrostatic emitter 31 is a slender metal wire whose length matches the width of the electret film 6. The entire metal wire serves as a charge-emitting end, generating a cylindrical corona. When the electret film 6 passes by, the charge flow sweeps across the surface of the electret film 6, electrifying the film 6.

[0090] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are intended solely to illustrate the principles of the present invention and are not to be construed in any way as limiting the scope of protection of the present invention. Based on the explanations herein, those skilled in the art will be able to devise other specific embodiments of the present invention without inventive effort, and such equivalent variations or substitutions are intended to be encompassed within the scope of the claims of this application.

Claims

1. An artificial stone insulating non-metallic mold laminating device for implementing an artificial stone insulating non-metallic mold laminating method, the artificial stone insulating non-metallic mold laminating method comprising the following steps: Placing the insulating non-metallic mold: placing the insulating non-metallic mold on an insulating carrier; Laying the electret film: Laying the electret film in the mold cavity of the insulating non-metallic mold; Sweeping the electret film: Sweeping the electret film forwardly to squeeze out the air between the electret film and the insulating non-metallic mold, so that the electret film fits the mold cavity of the insulating non-metallic mold; Electret polarization of electret film: applying corona to the electret film to make the electret film electret; The artificial stone insulation non-metallic mold coating equipment includes an insulation bearing device, a film laying device, an electrostatic generating device, a sweeping device and a translation device; The insulating bearing device is used to receive the insulating non-metallic mold; The film laying device is arranged at the feed end of the insulating supporting device and is used to lay the electret film into the mold cavity of the insulating non-metallic mold; The electrostatic generating device and the sweeping device are both arranged above the insulating supporting device, and are arranged along the conveying direction of the insulating non-metallic mold; the electrostatic generating device attaches charges to the electret film; the sweeping device is used to exhaust the air between the electret film and the non-metallic mold cavity; The translation device is used to drive the film laying device, the electrostatic generating device and the sweeping device to move; Or, the insulating bearing device is driven to move, so that the insulating non-metallic mold moves relative to the film laying device, the electrostatic generating device and the leveling device.

2. The artificial stone insulation non-metallic mold coating equipment according to claim 1 is characterized in that: The electret film electret step also includes multiple reciprocating leveling steps before the electret film electret step. The re-leveling step includes the following steps: leveling the electret film in the reverse direction; and then leveling the electret film in the forward direction.

3. The artificial stone insulation non-metallic mold coating equipment according to claim 1 is characterized in that: The electret film electret step further includes a single or multiple repeated electret step, and the repeated electret step is the same as the electret film electret step.

4. The artificial stone insulation non-metallic mold laminating equipment according to claim 1, characterized in that: The sweeping device includes a brush roller, a first connecting seat, a second connecting seat and a rotary drive device; the first connecting seat and the second connecting seat are respectively arranged on both sides of the insulating bearing device; one end of the brush roller is rotatably connected to the first connecting seat; one end of the brush roller passes through the first connecting seat and is connected to the driving end of the rotary drive device; the other end of the brush roller is rotatably matched with the second connecting seat.

5. The artificial stone insulation non-metallic mold coating equipment according to claim 4 is characterized in that: The first connecting seat and the second connecting seat have the same structure and both include a guide seat, a fixing frame and a lifting drive device; The lifting drive device is arranged on the top of the fixed frame, a slide groove is provided in the fixed frame, and the guide seat is slidably assembled in the slide groove; the output end of the lifting drive device passes through the fixed frame and is connected to the top of the guide seat; the brush roller is rotatably connected to the guide seat.

6. The artificial stone insulation non-metallic mold coating equipment according to claim 1 is characterized in that: The electrostatic generating device includes an electrostatic emission element, a high-voltage DC power supply, and a grounded metal plate; a clearing area is provided in the middle of the insulating support device, and the grounded metal plate is arranged in the clearing area; The grounded metal plate is located directly below the electrostatic emitter; the high-voltage DC power supply is electrically connected to the electrostatic emitter; the electrostatic emitter is arranged on one side of the sweeping device, and the corona emission end of the electrostatic emitter faces the electret film.

7. The artificial stone insulation non-metallic mold coating equipment according to claim 6, characterized in that: The static electricity generating device further includes a secondary static electricity emitter, the structure of which is the same as that of the static electricity emitter; the secondary static electricity emitter is electrically connected to a high-voltage DC power supply and is disposed on the other side of the sweeping device.

8. The artificial stone insulation non-metallic mold coating equipment according to claim 6, characterized in that: The electrostatic emission element is a plurality of electrostatic emission needles, which are distributed at intervals and arranged in rows. The needle tips of the electrostatic emission needles point to the electret film, and the other ends of the electrostatic emission needles are electrically connected to a high-voltage DC power supply.

9. The artificial stone insulation non-metallic mold coating equipment according to claim 6, characterized in that: The electrostatic emission element is a single or multiple metal wires arranged side by side, and both ends of the metal wires are electrically connected to a high-voltage direct current power supply.

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