Diaphragm preforming apparatus

Abstract

The application relates to the technical field of film pasting, and discloses a film pre-forming device, which comprises a first cavity device, a forming device, a heating device, a gas exchange device and a cooling device. The first cavity device comprises a first cavity and a first pipe assembly, the first cavity is used for receiving a film to be formed, and the first pipe assembly is communicated with the first cavity. The heating device is configured to heat the film. The gas exchange device is configured to be communicated with the first pipe assembly and is configured to pump gas out of the first pipe assembly. The cooling device is connected with the first cavity and / or the first pipe assembly to cool the gas in the corresponding first cavity or first pipe assembly. The film pre-forming device can reduce the risk of blockage of the gas exchange device.

Description

Technical Field

[0001] This application relates to the field of film application technology, and more specifically, to a film preforming device. Background Technology

[0002] When applying a film, it is generally necessary to first coat the surface of the film with adhesive, and then adhere the adhesive-coated side of the film to the surface of the product to be filmed. When the surface of the part of the product to be filmed is curved or folded, or other non-planar shapes, in order to improve the filming effect, the film can be pre-shaped so that its shape conforms to the surface of the part of the product to be filmed.

[0003] During the pre-forming process of the diaphragm, the diaphragm needs to be heated to deform it. At the same time, the cavity structure needs to ensure that the air pressure on the adhesive-coated side of the diaphragm is greater than that on the other side, so that the heated diaphragm with the adhesive side away from itself can fully fit into the forming mold.

[0004] Before removing the molded diaphragm, the gas inside the cavity needs to be evacuated to balance the internal pressure with the external pressure. However, because the adhesive coated on the diaphragm easily sublimates or evaporates when heated, the gas inside the cavity contains gaseous adhesive substances formed by the sublimation or evaporation of the adhesive. When the gas inside the cavity is evacuated, these gaseous adhesive substances flow towards the evacuation device, where they can easily condense or liquefy and clog the device. Utility Model Content

[0005] In view of this, this application provides a diaphragm preforming device that can reduce the risk of blockage in devices used for air extraction.

[0006] Embodiments of this application provide a diaphragm preforming apparatus for preforming an adhesive-coated diaphragm. The diaphragm preforming apparatus includes a first cavity device, a forming device, a heating device, a gas exchange device, and a cooling device. The first cavity device includes a first cavity body and a first tube assembly. The first cavity body is used to receive the diaphragm to be preformed, and the first tube assembly communicates with the first cavity body. The forming device includes a forming mold with a forming surface configured to adhere to the side of the diaphragm opposite to the first cavity body. The heating device is configured to heat the diaphragm, such that at least a portion of the adhesive on the diaphragm body is converted into a gaseous adhesive substance. The gas exchange device is configured to communicate with the first tube assembly to communicate with the first cavity body, and is configured to evacuate air from the first tube assembly. The cooling device connects to the first cavity body and / or the first tube assembly, and is configured to cool the gas within the corresponding first cavity body or first tube assembly, such that at least a portion of the gaseous adhesive substance is converted into a solid or liquid adhesive substance.

[0007] When the diaphragm is heated and deformed, the gas in the first chamber can be cooled by a cooling device before the gas exchanger draws gas from the first tube assembly. This lowers the temperature of the gas in the first chamber, causing at least a portion of the gaseous adhesive material in the gas to convert into solid or liquid adhesive material. This solid or liquid adhesive material can adhere to the inner wall of the first chamber or settle to the bottom, reducing the amount of gaseous adhesive material in the gas flowing through the first tube assembly to the gas exchanger, thereby reducing the risk of blockage in the gas exchanger. Alternatively, the gas in the first tube assembly can be cooled by a cooling device during the gas exchanger's gas extraction process, lowering the temperature of the gas in the first tube assembly. This causes at least a portion of the gaseous adhesive material in the gas in the first tube assembly to convert into solid or liquid adhesive material, which can adhere to the inner wall of the first tube assembly, further reducing the amount of gaseous adhesive material in the gas flowing to the gas exchanger and thus reducing the risk of blockage in the gas exchanger.

[0008] In some embodiments of this application, the cooling device includes a first cooling assembly, which includes a first cooling pipe and a control valve. The first cooling pipe is connected to a first cavity and configured to fill the first cavity with a first cooling gas. The temperature of the first cooling gas is lower than the temperature inside the first cavity. The control valve is connected to the first cooling pipe and configured to open or close the first cooling pipe.

[0009] Before the gas exchange device extracts gas from the first tube assembly, the control valve can be opened to allow the first cooling tube to fill the first cavity with the first cooling gas, thereby lowering the temperature of the gas in the first cavity. This can cause at least part of the gaseous colloidal substances in the gas in the first cavity to sublimate or liquefy, thereby reducing the content of gaseous colloidal substances in the gas in the first cavity.

[0010] In some embodiments of this application, the first cooling assembly further includes an extension tube, which is disposed inside the first cavity and communicates with the first cooling tube. The wall of the extension tube is provided with a plurality of vent holes, and the first cooling gas flows into the first cavity through the vent holes from the extension tube.

[0011] The first cooling gas flows into the first cavity through the extension tube and the vent hole, which can increase the diffusion rate of the first cooling gas in the first cavity, so that the first cooling gas comes into rapid and sufficient contact with the gas in the first cavity, thereby increasing the cooling rate of the first cooling gas on the gas in the first cavity, and enabling the gaseous colloidal substances in the gas in the first cavity to quickly and fully sublimate or liquefy.

[0012] In some embodiments of this application, the cooling device includes a second cooling assembly, which includes a cooling cavity and a second cooling pipe. The cooling cavity covers at least a portion of the first pipe assembly. The second cooling pipe is connected to the cooling cavity and configured to fill the cooling cavity with a second cooling gas. The temperature of the second cooling gas is lower than the temperature of the gas in the first pipe assembly.

[0013] When the gas exchange device evacuates the first cavity through the first tube assembly, the second cooling tube can fill the cooling cavity with a second cooling gas. The second cooling gas cools the inside of the first tube assembly through the tube wall, which can lower the temperature of the gas inside the part of the first tube assembly located in the cooling cavity. This can cause at least part of the gaseous colloidal substances in the gas to condense or liquefy, thereby reducing the content of gaseous colloidal substances in the gas flowing to the gas exchange device.

[0014] In some embodiments of this application, the second cooling assembly includes a flow-retarding element, the cooling cavity is provided with an exhaust port, and the second cooling gas in the cooling cavity flows out of the exhaust port to the outside of the cooling cavity. The flow-retarding element is disposed inside the cooling cavity and between the second cooling pipe and the exhaust port. The flow-retarding element is configured to reduce the speed at which the second cooling gas in the cooling cavity flows from the second cooling pipe to the exhaust port.

[0015] The second cooling gas flows into the cooling chamber through the second cooling pipe and exits through the exhaust port to the outside of the cooling chamber. During this process, it can carry away the heat in the first pipe assembly, thereby achieving a continuous cooling effect on the gas in the second pipe assembly. The flow slowing element can reduce the flow rate of the second cooling gas, thereby prolonging the contact time between the second cooling gas and the first pipe assembly, allowing for sufficient heat exchange between the second cooling gas and the first pipe assembly. This improves the utilization rate of the second cooling gas and enhances the cooling effect on the gas in the first pipe assembly.

[0016] In some embodiments of this application, the second cooling pipe and the exhaust port are spaced apart along the extension direction of the first pipe assembly, the flow-slowing element is arranged around the first pipe assembly and is spiral in the extension direction of the first pipe assembly, and the flow-slowing element abuts against the outer wall of the first pipe assembly and the inner wall of the cooling cavity on both sides of the radial direction of the first pipe assembly.

[0017] The spiral-shaped flow-slowing element forms a spiral-shaped flow-guiding channel on the outside of the first tube assembly. The second cooling gas can flow along the flow-guiding channel, thereby extending the flow path of the second cooling gas and increasing the time of the second cooling gas in the cooling chamber. This achieves the effect of reducing the flow speed of the second cooling gas and improving the cooling effect on the gas in the first tube assembly.

[0018] In some embodiments of this application, the flow buffer is connected to the first tube assembly and configured to conduct heat from the first tube assembly.

[0019] The heat of the gas in the first tube assembly can be transferred to the flow retarder through the first tube assembly and then to the second cooling gas through the flow retarder. The flow retarder increases the contact area for heat exchange between the first tube assembly and the second cooling gas, which can further improve the heat exchange efficiency, thereby further improving the cooling effect of the second cooling gas on the gas in the first tube assembly.

[0020] In some embodiments of this application, the first tube assembly includes a heat exchange tube, a connecting tube, and a communicating tube. The connecting tube is connected to the first cavity, and the communicating tube is connected to the gas exchange device. One end of the heat exchange tube is detachably connected to the connecting tube, and the other end of the heat exchange tube is detachably connected to the communicating tube. The cooling cavity is covered with the heat exchange tube.

[0021] The cooling chamber is covered with heat exchange tubes, which allows gaseous colloidal substances in the gas flowing through the heat exchange tubes to condense into solid colloidal substances or liquefy into liquid colloidal substances to adhere to the inner wall of the heat exchange tubes. By making the two ends of the heat exchange tubes detachably connected to connecting pipes and connecting pipes respectively, it is easy to remove the heat exchange tubes to clean the solid or liquid colloidal substances on the inner wall of the heat exchange tubes.

[0022] In some embodiments of this application, the heat exchange tube has at least a first heat exchange section and a second heat exchange section in sequence along its own extension direction, and the extension direction of the second heat exchange section intersects with the extension direction of the first heat exchange section.

[0023] The flow direction of the gas inside the heat exchange tube changes at the junction of the first and second heat exchange sections, which reduces the gas flow velocity and causes turbulence. This allows the gas to make full contact with the inner wall of the heat exchange tube, improving the efficiency of heat exchange between the gas inside the heat exchange tube and the second cooling gas. This further enhances the cooling effect of the second cooling gas on the gas inside the heat exchange tube.

[0024] In some embodiments of this application, the first cavity includes two half-tubes, which are symmetrically arranged on both sides of the heat exchange tube and cover the heat exchange tube. The two half-tubes are detachably connected.

[0025] When it is necessary to clean the heat exchange tubes, the two halves can be separated first to facilitate the removal of the heat exchange tubes. This also reduces the weight of the removed heat exchange tubes, making them easier to transport and clean. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a diaphragm preforming device provided in one embodiment of this application.

[0027] Figure 2 yes Figure 1 Enlarged view at point A.

[0028] Figure 3 yes Figure 1A partial structural diagram of the diaphragm preforming equipment provided in the diagram when the first cavity moves to the second cavity.

[0029] Figure 4 yes Figure 3 The diagram shows a partial structural representation of the second cavity and the forming device provided in the image.

[0030] Figure 5 yes Figure 4 The diagram provided shows the second cavity and molding device after removing part of their structure.

[0031] Figure 6 yes Figure 3 A partial structural diagram of the gas exchange device and the second cooling component provided in the diagram.

[0032] Figure 7 yes Figure 6 Enlarged view at point B.

[0033] Figure 8 yes Figure 6 A partially exploded view of the first pipe assembly and the second cooling assembly provided in the diagram.

[0034] Figure 9 yes Figure 8 The diagram shows a partial structural schematic of the heat exchanger tubes provided.

[0035] Explanation of main component symbols 1000. Membrane preforming equipment; 100. First cavity device; 11. First cavity body; 111. First through hole; 112. Butt hole; 12. First tube assembly; 121. Heat exchange tube; 1211. First heat exchange section; 1212. Second heat exchange section; 1213. Third heat exchange section; 122. Connecting pipe; 123. Connecting pipe; 200. First drive device; 21. First lead screw; 22. First sliding seat; 23. First motor; 300. Second drive device; 31. Support frame; 32. Second lead screw; 33. Second sliding seat; 34. Second motor; 400. Second cavity device; 41. Second cavity body; 411. Second through hole; 412. Sliding hole; 42. Second tube assembly; 421. Butt hose; 422. Butt pipe; 500. Heating device; 51. Mounting frame; 52. Electric Heating rod; 600, Forming device; 61, Forming drive component; 611, Connecting frame; 612, Connecting rod; 613, Third lead screw; 614, Third sliding seat; 615, Third motor; 62, Forming mold; 621, Forming surface; 700, Gas exchange device; 71, Gas exchange component; 72, Gas supply pipe; 73, T-connector; 731, Connecting end; 800, Cooling device; 81, First cooling component; 811, First cooling pipe; 812, Control valve; 813, Extension pipe; 8131, Vent hole; 82, Second cooling component; 821, Cooling cavity; 8211, Exhaust port; 8212, Half-pipe; 822, Second cooling pipe; 823, Flow buffer; 8231, Flow guide channel; 1001, Feeding area; 1002, Working area; X, First direction; Z, Second direction. Detailed Implementation

[0036] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0038] The term “and / or” as used herein includes any and all combinations of one or more of the related listed items.

[0039] Furthermore, the terms “first,” “second,” “third,” etc., are used for descriptive purposes only and should not be interpreted as indicating or implying relative importance.

[0040] Embodiments of this application provide a diaphragm preforming apparatus for preforming an adhesive-coated diaphragm. The diaphragm preforming apparatus includes a first cavity device, a forming device, a heating device, a gas exchange device, and a cooling device. The first cavity device includes a first cavity body and a first tube assembly. The first cavity body is used to receive the diaphragm to be preformed, and the first tube assembly communicates with the first cavity body. The forming device includes a forming mold with a forming surface configured to adhere to the side of the diaphragm opposite to the first cavity body. The heating device is configured to heat the diaphragm, such that at least a portion of the adhesive on the diaphragm body is converted into a gaseous adhesive substance. The gas exchange device is configured to communicate with the first tube assembly to communicate with the first cavity body, and is configured to evacuate air from the first tube assembly. The cooling device connects to the first cavity body and / or the first tube assembly, and is configured to cool the gas within the corresponding first cavity body or first tube assembly, such that at least a portion of the gaseous adhesive substance is converted into a solid or liquid adhesive substance.

[0041] When the diaphragm is heated and deformed, the gas in the first chamber can be cooled by a cooling device before the gas exchanger draws gas from the first tube assembly. This lowers the temperature of the gas in the first chamber, causing at least a portion of the gaseous adhesive material in the gas to convert into solid or liquid adhesive material. This solid or liquid adhesive material can adhere to the inner wall of the first chamber or settle to the bottom, reducing the amount of gaseous adhesive material in the gas flowing through the first tube assembly to the gas exchanger, thereby reducing the risk of blockage in the gas exchanger. Alternatively, the gas in the first tube assembly can be cooled by a cooling device during the gas exchanger's gas extraction process, lowering the temperature of the gas in the first tube assembly. This causes at least a portion of the gaseous adhesive material in the gas in the first tube assembly to convert into solid or liquid adhesive material, which can adhere to the inner wall of the first tube assembly, further reducing the amount of gaseous adhesive material in the gas flowing to the gas exchanger and thus reducing the risk of blockage in the gas exchanger.

[0042] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0043] Reference Figure 1 This application provides a diaphragm preforming apparatus 1000 for preforming an adhesive-coated diaphragm. The diaphragm preforming apparatus 1000 includes a base (not shown), a first cavity device 100, a first drive device 200, a second drive device 300, a second cavity device 400, a heating device 500, a forming device 600, and a gas exchange device 700.

[0044] In some embodiments, one side of the diaphragm is coated with adhesive to securely adhere the diaphragm to the eyeglass lens. In some embodiments, the adhesive on the diaphragm surface is optical adhesive.

[0045] In other embodiments, the diaphragm may also be a diaphragm for attaching to a camera lens or a device such as a display screen.

[0046] In some embodiments, the film preforming equipment 1000 has a feeding area 1001 and a working area 1002 that are spaced apart. For ease of description, the feeding area 1001 and the working area 1002 can be defined as being spaced apart sequentially along a first direction X.

[0047] In some embodiments, the first cavity device 100 includes a first cavity 11 configured to receive a diaphragm to be formed, a first drive device 200 connected to the first cavity 11 and the base and configured to drive the first cavity 11 to move along a first direction X between the loading area 1001 and the working area 1002; the second cavity device 400 includes a second cavity 41, a second drive device 300 and the second cavity 41 are disposed in the working area 1002, and the second drive device 300 connected to the second cavity 41 and the base and configured to drive the second cavity 41 to move along a second direction Z, so that the second cavity 41 covers the diaphragm that has moved to the first cavity 11 in the working area 1002; and a gas exchange device 700 connected to the base and configured to evacuate or inflate the first cavity 11 and the second cavity 41. A heating device 500 is disposed in the working area 1002 and connected to the machine base. The heating device 500 is configured to heat the diaphragm on the first cavity 11. A forming device 600 is disposed in the working area 1002 and connected to the machine base. The forming device 600 is configured to abut against the heated diaphragm to deform the diaphragm. In some embodiments, the first direction X is parallel to the horizontal direction, and the second direction Z is parallel to the vertical direction. In other embodiments, the second direction Z may be inclined relative to the vertical direction, as long as the second cavity 41 can cover the diaphragm located on the first cavity 11 in the working area 1002.

[0048] Reference Figure 1 and Figure 2 In some embodiments, the first cavity 11 is a hollow shell, and the upper wall of the first cavity 11 has a first through hole 111, which connects the interior and exterior of the first cavity 11. When the first cavity 11 is in the feeding area 1001, the diaphragm to be formed can be placed over the first through hole 111 with the adhesive-coated side of the diaphragm facing the interior of the first cavity 11. It is understood that when the diaphragm is placed over the first through hole 111, the diaphragm adheres to the upper wall of the first cavity 11, and the diaphragm can seal the first through hole 111, thereby sealing the first cavity 11.

[0049] In some embodiments, the first cavity 11 is provided with a docking hole 112, which connects the interior and exterior of the first cavity 11. Exemplarily, the docking hole 112 is provided on the side wall of the first cavity 11 along the first direction X toward the working area 1002.

[0050] Reference Figure 2 and Figure 3 In some embodiments, the first cavity device 100 further includes a first tube assembly 12, one end of which is located in the working area 1002. After the diaphragm is placed over the first through hole 111, the first driving device 200 can drive the first cavity 11 to move to the working area 1002, so that the docking hole 112 connects with the first tube assembly 12, thereby enabling communication between the first tube assembly 12 and the first cavity 11. In other embodiments, the first cavity 11 can be connected to a flexible tube, with the interior of the flexible tube communicating with the interior of the docking hole 112, and the end of the flexible tube away from the first cavity 11 connected to the first tube assembly 12, thereby ensuring that the first cavity 11 and the first tube assembly 12 remain connected at all times.

[0051] Reference Figure 1 and Figure 3 In some embodiments, the first driving device 200 includes a first lead screw 21, a first sliding seat 22, and a first motor 23. The first lead screw 21 is rotatably connected to the machine base, the first sliding seat 22 is connected to the first cavity 11 and slidably connected to the machine base via a slide rail, and the first sliding seat 22 is threadedly connected to the first lead screw 21. The first motor 23 is connected to the machine base, and the output shaft of the first motor 23 is connected to the first lead screw 21. The first motor 23 can drive the first lead screw 21 to rotate, thereby causing the first sliding seat 22 to drive the first cavity 11 to move. In other embodiments, the first driving device 200 can be a cylinder or a linear motor, or other structures capable of driving the first cavity 11 to move.

[0052] In some embodiments, the heating device 500 and the second cavity 41 are sequentially spaced apart along the second direction Z, with the heating device 500 located below the second cavity 41. The gap between the heating device 500 and the second cavity 41 is used to accommodate the first cavity 11. It is understood that after the first cavity 11 moves to the working area 1002, that is, after the first cavity 11 moves to the gap between the heating device 500 and the second cavity 41, the first cavity 11 is located above the heating device 500, so that the heating device 500 can heat the first cavity 11, thereby heating the diaphragm on the first cavity 11.

[0053] In some embodiments, the heating device 500 includes a mounting frame 51 and a plurality of electric heating rods 52 connected to the mounting frame 51. The mounting frame 51 is spaced apart from the second cavity 41 in the second direction Z and is located below the second cavity 41. The mounting frame 51 is connected to the base. After the first cavity 11 moves above the mounting frame 51, the heat generated by the electric heating rods 52 can be transferred from the bottom of the first cavity 11 through the interior of the first cavity 11 to the first through hole 111 (see...). Figure 2 The membrane at the location is heated.

[0054] In some embodiments, the heating device 500 may be disposed inside and connected to the first cavity 11. In other embodiments, the heating device 500 may also be other structures capable of heating the diaphragm on the first cavity 11.

[0055] Reference Figure 3 and Figure 4 In some embodiments, the second cavity 41 is a hollow shell, and the lower end wall of the second cavity 41 is provided with a second through hole 411, which connects the interior and exterior of the second cavity 41. It can be understood that the second through hole 411 is connected to the first through hole 111 of the first cavity 11 located in the working area 1002 (see...). Figure 2 Alignment in the second direction Z. When the second drive device 300 drives the second cavity 41 to move toward the first cavity 11 in the second direction Z, the lower end wall of the second cavity 41 can abut against the diaphragm on the first cavity 11, so that the second through hole 411 is sealed by the diaphragm.

[0056] In some embodiments, the second driving device 300 includes a support frame 31, a second lead screw 32, a second sliding seat 33, and a second motor 34. The support frame 31 is connected to the machine base, the second lead screw 32 is rotatably connected to the support frame 31, the second cavity 41 is connected to the second sliding seat 33, the second sliding seat 33 is slidably connected to the support frame 31 along the second direction Z via a slide rail and is threadedly connected to the second lead screw 32, and the second motor 34 is connected to the support frame 31, with the output shaft of the second motor 34 connected to the second lead screw 32. The second motor 34 drives the second lead screw 32 to rotate, thereby causing the second sliding seat 33 to move the second cavity 41. In other embodiments, the second driving device 300 may be a cylinder or a linear motor, or other structures capable of driving the second cavity 41 to move.

[0057] Reference Figure 4In some embodiments, the molding apparatus 600 includes a molding drive 61 and a molding die 62. The molding die 62 is disposed inside the second cavity 41 and aligned with the second through hole 411 along the second direction Z; the molding die 62 has a molding surface 621 on the side facing the second through hole 411 along the second direction Z. The molding drive 61 connects the molding die 62 and the second cavity 41, and is configured to drive the molding die 62 to move toward the second through hole 411. After the diaphragm is heated, the molding drive 61 can drive the molding die 62 to move toward the diaphragm along the second direction Z, so that the molding surface 621 fits against the diaphragm, thereby allowing the diaphragm to undergo precise deformation.

[0058] Reference Figure 4 and Figure 5 In some embodiments, the molding drive 61 includes a connecting frame 611, a connecting rod 612, a third lead screw 613, a third sliding seat 614, and a third motor 615. The connecting frame 611 is located above the second cavity 41 and connected to the upper end wall of the second cavity 41. The third lead screw 613 is rotatably connected to the connecting frame 611. The third sliding seat 614 is slidably connected to the connecting frame 611 along the second direction Z via a slide rail and is threadedly connected to the third lead screw 613. The third motor 615 is connected to the connecting frame 611, and the output shaft of the third motor 615 is connected to the third lead screw 613. The upper end wall of the second cavity 41 is provided with a sliding hole 412, which communicates with the interior of the second cavity 41. The connecting rod 612 is inserted into the sliding hole 412 and is slidably and sealingly connected to the sliding hole 412. The upper end of the connecting rod 612 is connected to the third sliding seat 614, and the lower end of the connecting rod 612 is connected to the molding die 62. The third motor 615 drives the third lead screw 613 to rotate, which in turn causes the third sliding seat 614 to move the connecting rod 612, thereby moving the molding die 62. In other embodiments, the molding drive 61 can be a cylinder or a linear motor, or other structures capable of driving the molding die 62 to move.

[0059] Reference Figure 3 In some embodiments, the second cavity device 400 further includes a second tube assembly 42 communicating with the second cavity 41 and the gas exchange device 700, and the first tube assembly 12 communicating with the gas exchange device 700. The gas exchange device 700 is configured to evacuate or inflate the first cavity 11 through the first tube assembly 12, and the gas exchange device 700 is configured to evacuate or inflate the second cavity 41 through the second tube assembly 42.

[0060] Reference Figure 3 and Figure 4In some embodiments, after the diaphragm is placed over the first cavity 11 in the second cavity 41, the gas exchange device 700 can evacuate the first cavity 11 and the second cavity 41. When the gas pressure in the first cavity 11 and the second cavity 41 decreases from the initial pressure value to a predetermined low-pressure threshold, the gas exchange device 700 stops evacuating, and the heating device 500 heats the diaphragm. Then, the molding die 62 of the molding device 600 moves toward the heated diaphragm, and the gas exchange device 700 inflates the first cavity 11 through the first tube assembly 12 until the gas pressure in the first cavity 11 rises to a predetermined high-pressure threshold. By inflating the first cavity 11, the gas pressure in the first cavity 11 can be made greater than the gas pressure in the second cavity 41, allowing the diaphragm to fully adhere to the molding surface 621 of the molding die 62, thereby improving the accuracy of the diaphragm deformation. In some embodiments, the heating device 500 can stop heating the diaphragm before the gas exchange device 700 inflates the first cavity 11. In other embodiments, the second cavity 41 and the second tube assembly 42 may be omitted. It is understood that the step of evacuating the first cavity 11 may be omitted.

[0061] It is understood that the air pressure inside the first cavity 11 and the second cavity 41 can be detected by installing barometers (not shown) on the first cavity 11 and the second cavity 41 respectively. In some embodiments, the initial air pressure value can be the same as the indoor air pressure, and the high pressure threshold can be greater than the initial air pressure value.

[0062] After the membrane is deformed and cooled to set, the forming mold 62 of the forming device 600 moves away from the membrane. The gas exchange device 700 can inflate the second cavity 41 through the second tube assembly 42 to raise the air pressure in the second cavity 41 to the initial air pressure value. Then, the gas exchange device 700 can evacuate the first cavity 11 through the first tube assembly 12 to reduce the air pressure in the first cavity 11 to the initial air pressure value. Then, the second driving device 300 drives the second cavity 41 away from the first cavity 11, and the first driving device 200 drives the first cavity 11 to move to the loading area 1001, so that the membrane can be transferred from the first cavity 11 to the film application station for film application.

[0063] When the heating device 500 heats the diaphragm, the adhesive coated on the diaphragm surface easily sublimates or evaporates to form a gaseous adhesive substance. This gaseous adhesive substance mixes with the gas in the first cavity 11. It can be understood that the first cavity 11 at this time contains the gaseous adhesive substance formed by the sublimation or evaporation of the adhesive. When the gas exchange device 700 evacuates the first cavity 11 through the first tube assembly 12, the gaseous adhesive substance in the first cavity 11 can flow along the first tube assembly 12 to the gas exchange device 700. The gaseous adhesive substance flowing to the gas exchange device 700 easily condenses into a solid adhesive substance or liquefies into a liquid adhesive substance. The solid or liquid adhesive substance easily clogs the pipes of the gas exchange device 700, thereby reducing the efficiency of the gas exchange device 700 in evacuation and inflation.

[0064] Reference Figure 2 and Figure 3 In order to improve the above-mentioned technical problems, in some embodiments, the film preforming equipment 1000 further includes a cooling device 800, which is connected to the first cavity 11 and / or the first tube assembly 12. The cooling device 800 is configured to cool the gas in the corresponding first cavity 11 or the first tube assembly 12 so that the gaseous adhesive material condenses into a solid adhesive material or liquefies into a liquid adhesive material.

[0065] When the diaphragm is heated and deformed, the gas in the first chamber 11 can be cooled by the cooling device 800 before the gas exchange device 700 draws gas from the first chamber 11. This lowers the temperature of the gas in the first chamber 11, causing at least a portion of the gaseous gel in the gas to condense into a solid gel or liquefy into a liquid gel. The solid or liquid gel can adhere to the inner wall of the first chamber 11 or settle to the bottom of the first chamber 11, thereby reducing the content of gaseous gel in the gas flowing to the gas exchange device 700 through the first tube assembly 12, and thus reducing the risk of blockage in the gas exchange device 700. Alternatively, during the process of gas extraction from the first chamber 11 by the gas exchange device 700, the gas in the first tube assembly 12 can be cooled by the cooling device 800, thereby lowering the temperature of the gas in the first tube assembly 12. This causes at least a portion of the gaseous adhesive material in the gas in the first tube assembly 12 to condense into solid adhesive material or liquefy into liquid adhesive material. The solid or liquid adhesive material can adhere to the inner wall of the first tube assembly 12, thereby reducing the content of gaseous adhesive material in the gas flowing to the gas exchange device 700, and thus reducing the risk of blockage of the gas exchange device 700.

[0066] Reference Figure 2 In some embodiments, the cooling device 800 includes a first cooling assembly 81, which includes a first cooling pipe 811 and a control valve 812. The first cooling pipe 811 is connected to a first cavity 11, and the interior of the first cooling pipe 811 communicates with the interior of the first cavity 11. The first cooling pipe 811 is configured to introduce a first cooling gas into the first cavity 11, the temperature of which is lower than the temperature inside the first cavity 11. It is understood that the first cooling pipe 811 may be connected to a blower (not shown), which can introduce the first cooling gas into the first cavity 11 through the first cooling pipe 811. In some embodiments, the first cooling gas may be indoor air. In other embodiments, the first cooling pipe 811 may be connected to a compressed gas tank, and the first cooling gas may be a compressed gas such as nitrogen in the compressed gas tank, as long as the first cooling gas can lower the temperature inside the first cavity 11, causing the gaseous colloidal substance inside the first cavity 11 to sublimate or liquefy.

[0067] Control valve 812 is connected to and configured to open or close the first cooling pipe 811. Exemplarily, control valve 812 is a solenoid valve. Control valve 812 can close the first cooling pipe 811 to keep the first cavity 11 sealed; when it is necessary to fill the first cavity 11 with first cooling gas, control valve 812 can be opened.

[0068] In some embodiments, the first cooling assembly 81 further includes an extension tube 813 disposed inside the first cavity 11. One end of the extension tube 813 is connected to the first cooling tube 811, and the other end of the extension tube 813 is closed. The wall of the extension tube 813 is provided with a plurality of vent holes 8131, through which the first cooling gas flows into the first cavity 11. The first cooling gas flows into the first cavity 11 through the extension tube 813 and the vent holes 8131, which can increase the diffusion rate of the first cooling gas in the first cavity 11, allowing the first cooling gas to come into rapid and sufficient contact with the gas in the first cavity 11. This can increase the cooling rate of the first cooling gas on the gas in the first cavity 11, and allow the gaseous colloidal substances in the gas in the first cavity 11 to quickly and fully sublimate or liquefy.

[0069] Reference Figure 6 and Figure 7 In some embodiments, the cooling device 800 further includes a second cooling component 82, which is connected to the first tube assembly 12 and configured to cool the gas within the first tube assembly 12 to cause the gaseous colloidal substance in the gas flowing through the first tube assembly 12 to sublimate or liquefy.

[0070] In some embodiments, the second cooling assembly 82 includes a cooling chamber 821 and a second cooling pipe 822. The cooling chamber 821 covers at least a portion of the first pipe assembly 12. The second cooling pipe 822 is connected to the cooling chamber 821 and configured to introduce a second cooling gas into the cooling chamber 821. The temperature of the second cooling gas is lower than the temperature of the gas in the first pipe assembly 12. The second cooling gas can lower the temperature inside the cooling chamber 821, thereby lowering the temperature inside the first pipe assembly 12, causing gaseous gel-like substances in the gas flowing through the first pipe assembly 12 to condense into solid gel-like substances or liquefy into liquid gel-like substances.

[0071] In some embodiments, the second cooling pipe 822 may be connected to a blower (not shown), through which the blower can introduce a second cooling gas into the cooling chamber 821. In some embodiments, the second cooling gas may be indoor air. In other embodiments, the second cooling pipe 822 may be connected to a compressed gas tank, and the second cooling gas may be a compressed gas such as nitrogen in the compressed gas tank, as long as the second cooling gas can cause the gaseous colloidal substances in the gas flowing through the first pipe assembly 12 to sublimate or liquefy.

[0072] In some embodiments, the gas exchange device 700 includes a gas exchange component 71, a gas delivery pipe 72, and a three-way pipe 73. The three-way pipe 73 has three connecting ends 731, which are respectively a first connecting end 731, a second connecting end 731, and a third connecting end 731. In some embodiments, the gas exchange component 71 is an integrated vacuum and blower unit with both vacuuming and blowing functions. The gas exchange component 71 is connected to a base, one end of the gas delivery pipe 72 is connected to the gas exchange component 71, and the other end of the gas delivery pipe 72 is connected to the third connecting end 731 of the three-way pipe 73. In other embodiments, the gas exchange component 71 includes a vacuum pump and a blower. One end of the gas delivery pipe 72 is connected to both the vacuum pump and the blower, wherein the vacuum pump is used to vacuum the gas delivery pipe 72, and the blower is used to inflate the gas delivery pipe 72.

[0073] Reference Figure 6 and Figure 8 In some embodiments, the first tube assembly 12 includes a heat exchange tube 121, a connecting tube 122, and a communicating tube 123. One end of the connecting tube 122 is configured to connect with the first cavity 11 (see...). Figure 3 The connecting pipe 122 is connected to the heat exchange pipe 121 at one end. The end of the heat exchange pipe 121 away from the connecting pipe 122 is connected to the connecting pipe 123 at one end. The end of the connecting pipe 123 away from the heat exchange pipe 121 is connected to the first connecting end 731 of the three-way pipe 73, so that the connecting pipe 123 is connected to the gas exchange component 71. When the gas exchange component 71 is evacuated, the gas in the first cavity 11 can flow sequentially along the connecting pipe 122, the heat exchange pipe 121, the connecting pipe 123, the three-way pipe 73, and the gas delivery pipe 72 to the gas exchange component 71.

[0074] For example, the end of the connecting pipe 122 away from the heat exchange pipe 121 is connected to the mating hole 112 along the first direction X (see Figure 2 Alignment; after the first cavity 11 moves to the connecting pipe 122, the end of the connecting pipe 122 away from the heat exchange pipe 121 covers the docking hole 112 and the end wall of the connecting pipe 122 abuts against the outer wall of the first cavity 11, so that the interior of the connecting pipe 122 communicates with the interior of the first cavity 11 through the docking hole 112. In other embodiments, the connecting pipe 122 can be inserted into the docking hole 112 so that the interior of the connecting pipe 122 communicates with the interior of the first cavity 11; when the first cavity 11 moves away from the connecting pipe 122, the first cavity 11 can be disengaged from the connecting pipe 122.

[0075] In some embodiments, a cooling cavity 821 is provided over the heat exchange tube 121 to cool the gas inside the heat exchange tube 121, causing the gaseous adhesive to condense into a solid adhesive or liquefy into a liquid adhesive. The solid and liquid adhesives can adhere to the inner wall of the heat exchange tube 121 to reduce the content of gaseous adhesive in the gas flowing to the gas exchanger 71.

[0076] Reference Figure 7 and Figure 8 In some embodiments, the cooling chamber 821 is provided with an exhaust port 8211. In some embodiments, gaps for gas flow are provided between the inner walls of both ends of the cooling chamber 821 along the extension direction of the heat exchange tube 121 and the outer wall of the heat exchange tube 121. It can be understood that the gaps between the inner walls of both ends of the cooling chamber 821 and the outer wall of the heat exchange tube 121 form the exhaust port 8211. In some embodiments, the second cooling tube 822 is located approximately at the middle position of the cooling chamber 821 along the extension direction of the heat exchange tube 121, such that the second cooling tube 822 and the exhaust port 8211 are spaced apart along the extension direction of the heat exchange tube 121. The second cooling gas introduced into the cooling chamber 821 by the second cooling tube 822 can flow towards the exhaust port 8211 along the extension direction of the heat exchange tube 121 and flow out to the outside of the cooling chamber 821 from the exhaust port 8211, thereby releasing the heat of the gas in the heat exchange tube 121. In other embodiments, the inner walls of both ends of the cooling cavity 821 along the extension direction of the heat exchange tube 121 can be fitted and sealed to the outer wall of the heat exchange tube 121, and the exhaust port 8211 can be provided on the peripheral wall of the cooling cavity 821.

[0077] In some embodiments, the second cooling assembly 82 further includes a flow-retarding element 823, which is disposed inside the cooling cavity 821 and between the second cooling pipe 822 and the exhaust port 8211. In some embodiments, the flow-retarding element 823 is arranged around the heat exchange pipe 121 and is spirally shaped along the extension direction of the heat exchange pipe 121. The flow-retarding element 823 abuts against the outer wall of the heat exchange pipe 121 and the inner wall of the cooling cavity 821 on both radial sides of the heat exchange pipe 121, respectively. A spiral-shaped flow-slowing element 823 forms a spiral-shaped flow-guiding channel 8231 on the outer wall of the heat exchange tube 121. The second cooling gas can flow along the flow-guiding channel 8231, thereby extending the flow path of the second cooling gas and increasing the time the second cooling gas spends in the cooling chamber 821. This reduces the speed at which the second cooling gas flows from the second cooling tube 822 to the exhaust port 8211, allowing the second cooling gas to fully contact the heat exchange tube 121, thereby improving the cooling effect of the second cooling gas on the gas inside the heat exchange tube 121.

[0078] In some embodiments, the flow-retarding element 823 is made of metal and is welded to the outer wall of the heat exchange tube 121, enabling the heat exchange element to conduct heat from the heat exchange tube 121. This increases the contact area for heat exchange between the heat exchange tube 121 and the second cooling gas, further improving heat exchange efficiency and thus enhancing the cooling effect of the second cooling gas on the gas inside the heat exchange tube 121. In other embodiments, the heat exchange tube 121 can also be made of ceramic or other materials capable of conducting heat.

[0079] In other embodiments, the flow-retarding element 823 may include multiple baffles, which are distributed on the outer wall of the heat exchange tube 121. The baffles have a certain blocking effect on the second cooling gas, thereby reducing the flow velocity of the second cooling gas from the second cooling tube 822 to the exhaust port 8211.

[0080] Reference Figure 9 In some embodiments, the heat exchange tube 121 has at least a first heat exchange portion 1211 and a second heat exchange portion 1212 sequentially along its own extending direction, and the extending direction of the second heat exchange portion 1212 intersects the extending direction of the first heat exchange portion 1211. It is understood that both the first heat exchange portion 1211 and the second heat exchange portion 1212 are tubular. In some embodiments, the extending directions of the first heat exchange portion 1211 and the second heat exchange portion 1212 are substantially perpendicular.

[0081] The flow direction of the gas in the heat exchange tube 121 changes at the junction of the first heat exchange section 1211 and the second heat exchange section 1212, which reduces the flow velocity of the gas and causes turbulence. This allows the gas to make full contact with the inner wall of the heat exchange tube 121, which improves the efficiency of heat exchange between the gas in the heat exchange tube 121 and the second cooling gas, thereby further enhancing the cooling effect of the second cooling gas on the gas in the heat exchange tube 121.

[0082] In some embodiments, the heat exchange tube 121 further includes a third heat exchange section 1213. The first heat exchange section 1211, the second heat exchange section 1212, and the third heat exchange section 1213 are connected in sequence. The extension direction of the third heat exchange section 1213 is parallel to the extension direction of the first heat exchange section 1211, making the heat exchange tube 121 approximately "S" shaped. It can be understood that the third heat exchange section 1213 is tubular.

[0083] Reference Figure 8 In some embodiments, one end of the heat exchange tube 121 is detachably connected to the connecting tube 122, and the other end of the heat exchange tube 121 is detachably connected to the connecting tube 123. Exemplarily, both ends of the heat exchange tube 121 are detachably connected to the connecting tube 122 and the connecting tube 123 respectively via flanges. In other embodiments, the heat exchange tube 121 can be detachably connected to the connecting tube 122 or the connecting tube 123 via clamps or other structures. By making both ends of the heat exchange tube 121 detachably connected to the connecting tube 122 and the connecting tube 123 respectively, it is convenient to remove the heat exchange tube 121 to clean solid or liquid adhesive substances from its inner wall.

[0084] In some embodiments, the cooling chamber 821 includes two half-tubes 8212, which are symmetrically arranged on both sides of the heat exchange tube 121 and cover the heat exchange tube 121. The two half-tubes 8212 are detachably connected. For example, the two half-tubes 8212 are detachably connected by bolts. When it is necessary to clean the heat exchange tube 121, the two half-tubes 8212 can be separated first to facilitate the removal of the heat exchange tube 121, thereby reducing the weight of the removed heat exchange tube 121 and facilitating its handling and cleaning.

[0085] In some embodiments, the cross-section of the semi-tube 8212 is semi-circular, and the inner diameter of the semi-tube 8212 is larger than the inner diameter of the heat exchange tube 121, so that a gap can be formed between the semi-tube 8212 and the heat exchange tube 121.

[0086] Reference Figure 6 In some embodiments, the second pipe assembly 42 includes a docking hose 421 and a connecting pipe 422. The docking hose 421 is a corrugated pipe. One end of the docking hose 421 is connected to the third connecting end 731 of the tee pipe 73, and the other end of the docking hose 421 is connected to one end of the connecting pipe 422. The end of the connecting pipe 422 away from the docking hose 421 is connected to the second cavity 41, and the interior of the connecting pipe 422 is connected to the second cavity 41 (see...). Figure 3 The internal connection is between the hose and the other hose. In other embodiments, the docking hose 421 may also be a hose of other shapes.

[0087] Understandably, the first pipe assembly 12 can be connected to a first valve (not shown), which can be connected to a connecting pipe 122 or a connecting pipe 123 to open or close the corresponding connecting pipe 122 or connecting pipe 123; the second pipe assembly 42 can be connected to a second valve (not shown), which can be connected to a connecting pipe 422 to open or close the connecting pipe 422. By controlling the opening and closing of the first pipe assembly 12 through the first valve and the second pipe assembly 42 through the second valve, air can be pumped into or into the first cavity 11 and the second cavity 41, respectively. In some embodiments, the first valve and / or the second valve can be a solenoid valve or other valve capable of controlling the opening and closing of the pipeline.

[0088] Reference Figure 2 and Figure 7 In other embodiments, the cooling device 800 may omit one of the first cooling component 81 and the second cooling component 82, as long as it reduces the flow to the gas exchange device 700 (see...). Figure 6 The content of gaseous colloids in the gas can be determined.

[0089] Furthermore, those skilled in the art should recognize that the above embodiments are merely illustrative of this application and are not intended to limit this application. Any appropriate changes and variations made to the above embodiments within the essential spirit and scope of this application fall within the scope of this application's disclosure.

Claims

1. A diaphragm preforming device for preforming an adhesive-coated diaphragm, characterized in that, The diaphragm preforming equipment includes: A first cavity device, the first cavity device including a first cavity body and a first tube assembly, the first cavity body being used to receive the diaphragm being formed, and the first tube assembly being connected to the first cavity body; A molding apparatus, the molding apparatus including a molding die having a molding surface configured to fit against the side of the diaphragm opposite to the first cavity; A heating device configured to heat the diaphragm, such that at least a portion of the adhesive on the diaphragm is converted into a gaseous adhesive substance; A gas exchange device configured to communicate with the first tube assembly to communicate with the first cavity, the gas exchange device being configured to evacuate the first tube assembly. A cooling device connected to the first cavity and / or the first tube assembly, the cooling device being configured to cool the gas within the corresponding first cavity or the first tube assembly to convert at least a portion of the gaseous adhesive material into a solid or liquid adhesive material.

2. The diaphragm preforming equipment according to claim 1, characterized in that, The cooling device includes a first cooling assembly, which includes a first cooling pipe and a control valve. The first cooling pipe is connected to the first cavity and configured to fill the first cavity with a first cooling gas. The temperature of the first cooling gas is lower than the temperature inside the first cavity. The control valve is connected to the first cooling pipe and configured to open or close the first cooling pipe.

3. The diaphragm preforming equipment according to claim 2, characterized in that, The first cooling assembly further includes an extension tube, which is disposed inside the first cavity and communicates with the first cooling tube. The extension tube has a plurality of vent holes on its wall, and the first cooling gas flows into the first cavity through the extension tube and the vent holes.

4. The diaphragm preforming equipment according to claim 1, characterized in that, The cooling device includes a second cooling assembly, which includes a cooling cavity and a second cooling pipe. The cooling cavity covers at least a portion of the first pipe assembly. The second cooling pipe is connected to the cooling cavity and configured to fill the cooling cavity with a second cooling gas, the temperature of which is lower than the temperature of the gas in the first pipe assembly.

5. The diaphragm preforming equipment according to claim 4, characterized in that, The second cooling assembly includes a flow-retarding element. The cooling cavity is provided with an exhaust port. The second cooling gas in the cooling cavity flows out of the exhaust port to the outside of the cooling cavity. The flow-retarding element is disposed inside the cooling cavity and between the second cooling pipe and the exhaust port. The flow-retarding element is configured to reduce the speed at which the second cooling gas in the cooling cavity flows from the second cooling pipe to the exhaust port.

6. The diaphragm preforming equipment according to claim 5, characterized in that, The second cooling pipe and the exhaust port are spaced apart along the extension direction of the first pipe assembly. The flow-slowing element is arranged around the first pipe assembly and is spiral in the extension direction of the first pipe assembly. The flow-slowing element abuts against the outer wall of the first pipe assembly and the inner wall of the cooling cavity on both sides of the radial direction of the first pipe assembly.

7. The diaphragm preforming equipment according to claim 5, characterized in that, The flow-retarding element is connected to the first tube assembly and configured to conduct heat from the first tube assembly.

8. The diaphragm preforming equipment according to claim 4, characterized in that, The first tube assembly includes a heat exchange tube, a connecting tube, and a communicating tube. The connecting tube is connected to the first cavity, and the communicating tube is connected to the gas exchange device. One end of the heat exchange tube is detachably connected to the connecting tube, and the other end of the heat exchange tube is detachably connected to the communicating tube. The cooling cavity covers the heat exchange tube.

9. The diaphragm preforming equipment according to claim 8, characterized in that, The heat exchange tube has at least a first heat exchange section and a second heat exchange section in sequence along its own extension direction, and the extension direction of the second heat exchange section intersects with the extension direction of the first heat exchange section.

10. The diaphragm preforming equipment according to claim 8, characterized in that, The first cavity includes two half-tubes, which are symmetrically arranged on both sides of the heat exchange tube and cover the heat exchange tube. The two half-tubes are detachably connected.

Images