Lower die assembly and hot pressing die

Abstract

The utility model provides a lower die assembly and a hot pressing die. The lower die assembly comprises a lower die plate (1) and a positioning structure (3) arranged on the lower die plate (1), and the positioning structure (3) is configured to position a workpiece; and the ejection mechanism (4) is provided with a fluid circulation channel (15), and the fluid circulation channel (15) is constructed to be used for introducing fluid and ejecting the workpiece out of the positioning structure (3) by utilizing the acting force of the fluid. According to the lower die assembly, a workpiece can be conveniently ejected out, and the surface structure of the workpiece cannot be damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of hot pressing, in particular to a lower die assembly and a hot pressing die. Background Art

[0002] Hot pressing CCS (Cells Contact System) is a technology used in new energy vehicles and energy storage battery modules. It is mainly used to realize functions such as high-voltage series and parallel connection of battery cells, temperature sampling, and voltage sampling.

[0003] The CCS integrated busbar is mainly composed of signal acquisition components, plastic structural parts, copper and aluminum busbars, connectors, etc., which are connected into a whole through hot pressing or riveting processes.

[0004] The hot pressing process involves assembling the signal acquisition components, aluminum bars, PET insulation film, and other raw materials and then pressing them together using a hot press. This process effectively reduces product size and weight, as well as the number of components. This makes the CCS integrated busbar structure thinner, more uniform, and more integrated, with reliable sealing and insulation. This allows for automated assembly, helping to improve battery module space utilization and production efficiency.

[0005] After the hot pressing process is completed, the finished CCS needs to be removed from the mold. There are problems such as the difficulty in removing the CCS and the easy damage to the CCS insulation film during removal. Utility Model Content

[0006] The main purpose of the utility model is to provide a lower die assembly and a hot pressing die, which can facilitate the ejection of a workpiece without damaging the surface structure of the workpiece.

[0007] In order to achieve the above object, according to one aspect of the present invention, a lower mold assembly is provided, comprising:

[0008] Next template,

[0009] A positioning structure is provided on the lower template, and the positioning structure is configured to position the workpiece;

[0010] The ejection mechanism has a fluid circulation channel, which is configured to allow fluid to flow into the channel and utilize the force of the fluid to eject the workpiece from the positioning structure.

[0011] Furthermore, the lower mold assembly also includes a lower cushioning layer, which is arranged on the lower mold plate, and the lower cushioning layer is constructed to support the workpiece; the ejection mechanism includes an ejection tube, which is arranged on the side of the lower cushioning layer facing the workpiece, one end of the ejection tube has a flow port, and the other end is closed, and the ejection tube has a stacked state after the fluid is discharged and an expanded state after the fluid is filled.

[0012] Furthermore, a receiving groove is provided on the lower lining layer, and the receiving groove is adapted to the shape of the ejection tube and can completely receive the ejection tube in a stacked state.

[0013] Furthermore, the ejector tube extends along the first direction on the lower template, there are multiple ejector tubes, and the multiple ejector tubes are arranged at intervals along the second direction on the lower template, and a preset angle is formed between the first direction and the second direction.

[0014] Furthermore, the positioning structure includes a positioning pin, and the ejector tube extends along the first direction. The ejector tube is located on the outer peripheral side of the positioning pin and forms a preset interval with the positioning pin.

[0015] Furthermore, the ejector tube is a flexible non-elastic tube.

[0016] Furthermore, the lower mold assembly also includes a lower cushioning layer, which is arranged on the lower mold plate, and the lower cushioning layer is constructed to support the workpiece; a fluid circulation channel is arranged in the lower cushioning layer, and the fluid circulation channel extends from the bottom of the lower cushioning layer to a surface close to the workpiece, and a vent is provided on the lower mold plate, and the fluid circulation channel is connected to the vent.

[0017] Furthermore, the vent hole extends from the surface of the lower template away from the lower cushion layer to the surface of the lower template close to the lower cushion layer; or, the vent hole includes a first hole segment and a second hole segment that are interconnected, the first hole segment extends from the side of the lower template to the inner side of the lower template, and the second hole segment extends from one end of the first hole segment away from the side to the surface of the lower template close to the lower cushion layer.

[0018] Furthermore, the positioning structure includes a positioning pin, and the fluid flow channel and the vent hole are staggered with the positioning pin.

[0019] Furthermore, each vent hole is provided with an ejector rod, the cross-sectional shape of the ejector rod is adapted to the cross-sectional shape of the vent hole and has the same size, and the ejector rod can be completely retracted into the vent hole.

[0020] Furthermore, the vent hole is a stepped hole, which includes a large hole section and a small hole section. The large hole section is located on the side of the small hole section close to the workpiece. The ejector rod is located in the large hole section and can be stopped on the step surface of the stepped hole.

[0021] Furthermore, the lower mold assembly also includes a driving member, which includes an air supply device and an air supply pipeline. The air supply device is connected to the fluid flow channel through the air supply pipeline.

[0022] According to another aspect of the present invention, a hot pressing mold is provided, comprising an upper mold assembly and a lower mold assembly, wherein the lower mold assembly is the above-mentioned lower mold assembly.

[0023] According to the technical solution of the present invention, the lower mold assembly includes: a lower mold plate, a positioning structure, which is arranged on the lower mold plate, and the positioning structure is configured to position the workpiece; an ejection mechanism, which has a fluid circulation channel, and the fluid circulation channel is configured to allow fluid to flow in and utilize the fluid force to eject the workpiece from the positioning structure. The lower mold assembly is provided with an ejection mechanism, and the ejection mechanism has a fluid circulation channel for fluid circulation. When ejecting the workpiece, fluid can be supplied through the fluid circulation channel, and the workpiece can be ejected from the positioning structure using the fluid force. Since the fluid itself has flow characteristics, the force acting on the workpiece is gentler than that of a solid ejection structure. It can not only form a gentle ejection force on the workpiece, but also ensure that the ejection force on each part of the workpiece is uniform during the ejection process, thereby avoiding damage to the workpiece caused by traditional mechanical ejection methods and improving the integrity and production efficiency of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0025] Figure 1 A schematic diagram of the exploded structure of a hot pressing mold according to an embodiment of the present invention is shown;

[0026] Figure 2 A partial three-dimensional structural diagram of a lower mold assembly according to an embodiment of the present utility model is shown;

[0027] Figure 3 A schematic structural diagram of a lower mold assembly according to an embodiment of the present invention is shown;

[0028] Figure 4 A partial side structural schematic diagram of a lower mold assembly according to an embodiment of the present invention is shown;

[0029] Figure 5 A partial side structural schematic diagram of a lower mold assembly according to an embodiment of the present invention is shown;

[0030] Figure 6 A partial side structural schematic diagram of a lower mold assembly according to an embodiment of the present invention is shown; and

[0031] Figure 7 A schematic structural diagram of the ejection of the ejector rod of the lower mold assembly according to one embodiment of the present utility model is shown.

[0032] The above drawings include the following reference numerals:

[0033] 1. Lower template; 2. Lower cushion layer; 21. Lower buffer pad; 22. Lower demoulding pad; 3. Positioning structure; 4. Ejector mechanism; 5. Ejector tube; 6. Accommodating groove; 7. Flow port; 8. Vent; 81. First hole section; 82. Second hole section; 83. Large hole section; 84. Small hole section; 9. Upper template; 10. Upper cushion layer; 11. Upper buffer pad; 12. Upper demoulding pad; 13. Workpiece; 14. Inflatable workbench; 15. Fluid flow channel; 16. Ejector rod. DETAILED DESCRIPTION

[0034] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0035] See also Figures 1 to 7 As shown, the utility model provides a lower mold assembly, including: a lower mold plate 1, a positioning structure 3, which is arranged on the lower mold plate 1, and the positioning structure 3 is constructed to position the workpiece 13; an ejection mechanism 4, which has a fluid circulation channel 15, and the fluid circulation channel 15 is constructed to allow fluid to pass through and use the fluid force to eject the workpiece 13 from the positioning structure 3.

[0036] The lower mold assembly is provided with an ejection mechanism, and the ejection mechanism has a fluid circulation channel for fluid circulation. When the workpiece 13 is ejected, the fluid can be supplied through the fluid circulation channel, and the workpiece 13 is ejected from the positioning structure by utilizing the fluid force. Since the fluid itself has flow characteristics, the force acting on the workpiece 13 is gentler than that of the solid ejection structure. It can not only form a soft ejection force on the workpiece 13, but also ensure that the ejection force on various parts of the workpiece 13 is uniform during the process of ejecting the workpiece 13. Therefore, the damage to the workpiece 13 caused by the traditional mechanical ejection method is avoided, and the integrity and production efficiency of the workpiece 13 are improved.

[0037] The fluid can lift the workpiece 13, making it easier to remove the workpiece 13. After the fluid pushes the workpiece 13 out, the fluid is easier to release. Therefore, using fluid as the ejection force source for ejecting the workpiece 13 is easy to take and put, simple to operate, and will not cause pollution to the dust-free environment of the workshop. It does not cause any other additional designs to the hot pressing mold and has low cost.

[0038] Through this design, the lower mold assembly can use the fluid force to smoothly eject the workpiece 13 after hot pressing, avoiding damage to the workpiece 13 caused by traditional mechanical ejection methods, improving the integrity of the workpiece 13 and production efficiency, and is suitable for various hot pressing processes that require high precision and high integrity, such as the production of finished CCS, electronic components, precision parts, etc.

[0039] The fluid is, for example, gas or liquid.

[0040] In one embodiment, the gas may be a gas with a simple source and low cost, such as air, or other gas that will not pollute the air, such as nitrogen.

[0041] In one embodiment, the liquid may be water or other solutions, so as to facilitate recycling and not cause pollution to the processing environment of the workpiece 13 and the surrounding environment.

[0042] In one embodiment, the lower mold assembly also includes a lower cushioning layer 2, which is arranged on the lower mold plate 1, and the lower cushioning layer 2 is constructed to support the workpiece 13; the ejection mechanism 4 includes an ejection tube 5, which is arranged on the side of the lower cushioning layer 2 facing the workpiece 13, and one end of the ejection tube 5 has a flow port 7, and the other end is closed, and the ejection tube 5 has a stacked state after the fluid is discharged and an expanded state after the fluid is filled.

[0043] In this embodiment, the lumen of the ejector tube 5 forms a fluid flow channel 15 , and the fluid enters the fluid flow channel 15 of the ejector tube 5 from the flow port 7 of the ejector tube 5 , causing the ejector tube 5 to expand and form an expanded state.

[0044] In this embodiment, the lower mold assembly also includes a lower cushioning layer 2, and the workpiece 13 is formed on the side of the lower cushioning layer 2 facing away from the lower mold plate 1. The lower cushioning layer 2 includes a lower buffer pad 21 and a lower demolding pad 22, wherein the lower buffer pad 21 is arranged on the lower mold plate 1, and the lower demolding pad 22 is arranged on the lower buffer pad 21, and the workpiece 13 is formed on the side of the lower demolding pad 22 facing away from the lower buffer pad 21.

[0045] The lower buffer pad 21 is generally made of rubber. During the hot pressing process, the lower cushion layer can disperse the pressure to avoid local excessive pressure in the mold, ensuring that the workpiece 13 is subjected to uniform pressure throughout the hot pressing process. In addition, it can also protect the mold, reduce the possibility of wear and damage to the mold during the hot pressing process, and extend the service life of the mold.

[0046] The lower demolding pad 22 is typically made of Teflon. A Teflon layer can be formed on the lower cushioning pad 21. The Teflon layer is located on the rubber surface of the lower cushioning pad 21 and primarily serves to prevent adhesion and reduce friction. Teflon offers excellent wear resistance, high temperature resistance, and corrosion resistance, effectively preventing adhesion between the molded product and the mold surface. This reduces friction and wear during the molding process, improving molding efficiency and product quality. Furthermore, Teflon offers excellent mold release properties, facilitating demolding of the molded product and enhancing production efficiency.

[0047] In one embodiment, the ejector tube 5 adopts a flexible tube structure.

[0048] In this embodiment, the ejection mechanism 4 includes an ejection tube 5, and the ejection tube 5 adopts a flexible tube structure. One end of the ejection tube has a flow port 7 and the other end is closed. The flow port 7 is used to pass fluid into the ejection tube 5. The other end of the ejection tube 5 is closed, which can ensure that the fluid entering the ejection tube has sufficient ejection pressure. Since the ejection tube 5 itself is a flexible structure, when the fluid passes into the ejection tube 5, the ejection tube 5 can be in an expanded state under the action of the fluid pressure. Since the height of the ejection tube 5 in the expanded state is higher than the top height of the positioning structure 3, it can apply an ejection force to the workpiece 13, ejecting the workpiece 13 from the positioning structure 3, so that the workpiece 13 and the positioning structure 3 are out of contact.

[0049] During the ejection process, the ejector tube 5 forms a flexible contact with the workpiece 13 under the action of the fluid. The fluid pressure in the ejector tube 5 gradually increases, and therefore the force acting on the workpiece 13 also gradually increases. Since the ejector tube 5 is a flexible structure, when the fluid force at a certain ejection location is greater than the force at other locations, the force will be quickly and evenly distributed to other locations under the action of the fluid flow, avoiding the problem of excessive local ejection force on the workpiece 13. For CCS, after the hot pressing process is completed, the finished CCS needs to be removed from the mold. Due to the characteristics of the hot pressing process, the dense positioning pins hinder the removal of the finished CCS, and the softer finished CCS has no fulcrum when being removed. This makes CCS removal difficult and easily leads to damage to the CCS insulating film during removal. Using a flexible ejector tube 5 to eject the finished CCS can effectively avoid the problem of excessive local ejection force causing damage to the finished CCS during the ejection process, ensuring the ejection efficiency and quality of the finished CCS.

[0050] The design of the flexible ejector tube 5 makes the ejection process smoother, reduces the risk of deformation of the workpiece 13, is applicable to workpieces 13 of various shapes and sizes, and has broad application prospects.

[0051] Since the ejector tube 5 is a flexible tube, when the workpiece 13 is hot-pressed, the fluid in the ejector tube 5 can be discharged. At this time, the ejector tube 5 can be flattened and is in a stacked state. It does not occupy the internal space of the hot-pressing mold and will not interfere with the hot-pressing molding of the hot-pressing mold, thereby ensuring the hot-pressing molding quality of the workpiece 13.

[0052] In one embodiment, the height of the ejector tube 5 in the stacked state is less than or equal to 1 mm.

[0053] In one embodiment, the lower cushion layer 2 is provided with a receiving groove 6 , which matches the shape of the ejector tube 5 and can fully accommodate the ejector tube 5 in the stacked state. The design of the receiving groove 6 not only ensures the stability and positioning accuracy of the ejector tube 5 , but also ensures that the ejector tube 5 does not affect the forming and positioning of the workpiece 13 when in the stacked state, and can smoothly eject the workpiece 13 when in the expanded state. Furthermore, the receiving groove 6 can be used to position the installation and setting of the ejector tube 5, avoiding the problems of easy displacement caused by the flexible structure of the ejector tube 5, thereby improving the structural stability and reliability of the ejector tube 5.

[0054] In one embodiment, the width of the accommodating groove 6 is consistent with the width of the ejector tube 5 in the expanded state, or is slightly larger than the width of the ejector tube 5 in the expanded state.

[0055] Since the ejector tube 5 itself is a flexible tube, the width of the accommodating groove 6 can also be smaller than the width of the ejector tube 5 in the naturally stretched state. In this case, the accommodating groove 6 can be used to limit the width of the ejector tube 5 in the expanded state, thereby preventing the ejector tube 5 from being too wide and affecting other structures of the hot pressing mold.

[0056] In one embodiment, ejector tubes 5 extend along a first direction on lower template 1. There are multiple ejector tubes 5, which are spaced apart along a second direction on lower template 1. The first direction and the second direction form a predetermined angle. In one embodiment, the first direction is perpendicular to the second direction.

[0057] The provision of multiple ejector tubes can provide a more uniform ejection force, ensuring that the workpiece 13 will not deflect or deform during the ejection process. It is suitable for workpieces 13 that require uniform ejection over a large area, such as finished CCS, large panels, composite materials, etc.

[0058] In one embodiment, the positioning structure 3 includes a positioning pin, and the ejector tube 5 extends along the first direction. The ejector tube 5 is located on the outer periphery of the positioning pin and forms a preset gap with the positioning pin.

[0059] In order to avoid interference between the ejector tube 5 and the positioning structure 3 , the ejector tube 5 should be disposed in the gaps between the plurality of positioning pins of the positioning structure 3 .

[0060] The ejector tube 5 can be a straight tube or a curved tube according to the location and layout of the positioning pins. The shape of the curved tube can be formed by the ejector tube 5 itself or achieved through the structural design of the accommodating groove 6.

[0061] The cross section of the ejector tube 5 in the expanded state is rectangular, trapezoidal, circular, elliptical, etc.

[0062] In one embodiment, the diameter of the round tube in the expanded state is 5 mm to 10 mm.

[0063] The preset interval between the positioning pin and the ejection tube 5 ensures that the ejection tube 5 does not interfere with the positioning function of the positioning pin when inflated, while providing sufficient ejection force, which is suitable for workpieces 13 that require multi-point positioning.

[0064] In one embodiment, the ejector tube 5 is a flexible non-elastic tube.

[0065] The size of the elastic ejector tube 5 after being filled with fluid is uncontrollable, and the elastic ejector tube 5 will deform like a balloon after being used for a long time. The deformed ejector tube 5 becomes larger, which is inconsistent with the position and size of the reserved ejector tube 5, which easily leads to poor hot pressing effect.

[0066] The flexible non-elastic tube can gradually expand when inflated, providing a gentle ejection force. After expanding to a preset degree and reaching the expanded state of the ejection tube 5, it maintains the preset pressure and will not continue to expand and deform, avoiding the impact of the elastic tube on the workpiece 13 during rapid expansion. It is suitable for workpieces 13 with strict requirements on the ejection force, and can strictly control the ejection shape and ejection force of the ejection tube 5, thereby improving the ejection accuracy.

[0067] In one embodiment, the flexible non-elastic tube is made of an anti-static and dust-proof material. The flexible non-elastic tube can be made of tubular fabric such as a hose or cloth, or rubber or plastic.

[0068] In one embodiment, the flexible non-elastic tube is a Teflon tube.

[0069] In one embodiment, the fluid injected into the ejector tube 5 is a cooling medium, which can cool the mold while the ejector tube 5 expands to eject the workpiece 13 .

[0070] In one embodiment, the lower mold assembly also includes a lower cushioning layer 2, which is arranged on the lower mold plate 1, and the lower cushioning layer 2 is constructed to support the workpiece 13; a fluid circulation channel 15 is arranged on the lower cushioning layer 2, and the fluid circulation channel 15 extends from the bottom of the lower cushioning layer 2 to a surface close to the workpiece 13, and a vent hole 8 is provided on the lower mold plate 1, and the fluid circulation channel 15 is connected to the vent hole 8.

[0071] In this embodiment, by directly providing a fluid flow channel 15 in the lower liner layer 2, gas at a preset pressure can be directly directed through the fluid flow channel 15 to the workpiece 13 to be ejected. The workpiece 13 is ejected using the pressure of the fluid flowing out of the fluid flow channel 15. This ejection method only requires the fluid flow channel 15 to be provided in the lower mold assembly itself, and can use fluid pressure to eject the workpiece 13 without the need for additional components. This results in a simpler and more compact overall structure and lower modification costs. This design allows the fluid to act directly on the workpiece 13, improving ejection effectiveness and efficiency.

[0072] The lower template 1 is provided with a vent hole 8 , which is in communication with the fluid flow channel 15 , so that fluid can be easily introduced into the fluid flow channel 15 through the vent hole 8 on the lower template 1 , thereby providing fluid ejection power for ejecting the workpiece 13 .

[0073] In this embodiment, the size and position of the fluid flow channel 15 and the vent hole 8 of the lower liner layer 2 are ensured not to affect the hot pressing CCS effect.

[0074] In one embodiment, the vent holes 8 extend from the surface of the lower template 1 away from the lower cushion layer 2 to the surface of the lower template 1 close to the lower cushion layer 2 .

[0075] In this embodiment, since the vent hole 8 passes through the lower template 1 in the up and down directions, when the fluid is introduced, the fluid is connected to the vent hole 8 at the bottom of the lower template 1, enters the lower template 1 from the bottom of the lower template 1, and then enters the fluid flow channel 15 of the lower cushion layer 2 through the vent hole 8 of the lower template 1 to eject the workpiece 13.

[0076] In one embodiment, the vent hole 8 includes a first hole segment 81 and a second hole segment 82 that are interconnected, the first hole segment 81 extending from the side of the lower template 1 to the inner side of the lower template 1, and the second hole segment 82 extending from the end of the first hole segment away from the side to the surface of the lower template 1 close to the lower lining layer 2.

[0077] In this embodiment, the first hole section 81 extends from the side of the lower template 1 into the lower template 1 and reaches the location of the second hole section 82. The second hole section 82 extends from the end of the first hole section 81 toward the lower cushion layer 2 and communicates with the fluid flow channel 15 on the lower cushion layer 2, enabling fluid to flow from the vent hole 8 to the fluid flow channel 15. This design simplifies the design of the fluid inlet channel. Since the fluid is introduced from the side of the lower template 1, it does not hinder the bottom structure of the lower template 1, making operation simpler and more convenient.

[0078] In one embodiment, the positioning structure 3 includes a positioning pin, and the fluid flow channel 15 and the vent hole 8 are staggered relative to the positioning pin. This ensures that the fluid flow channel 15 and the vent hole 8 do not interfere with the positioning function of the positioning pin while providing sufficient ejection force, making it suitable for ejecting workpieces 13 that require multi-point positioning and uniform ejection force distribution.

[0079] In one embodiment, each vent hole 8 is provided with an ejector rod 16 , the cross-sectional shape of the ejector rod 16 is adapted to the cross-sectional shape of the vent hole 8 and has the same size, and the ejector rod 16 can be completely retracted into the vent hole 8 .

[0080] In this embodiment, by arranging an ejector rod 16 in the vent hole 8, the ejector rod 16 can be used to block the outlet of the vent hole 8. In this way, when the fluid enters the vent hole 8, it will not flow out directly from the vent hole 8, but will first act on the ejector rod 16 to push the ejector rod 16 upward, so that the ejector rod 16 ejects the workpiece 13. The fluid acts concentratedly on the ejector rod 16, and then the ejector rod 16 transmits the ejection force to the workpiece 13, avoiding the dispersion of the fluid force and ensuring the ejection force on the workpiece 13.

[0081] Because ejector rod 16 blocks the outlet of vent 8, the fluid's force is fully applied to ejector rod 16, resulting in no leakage, or only minimal leakage, thus improving the efficiency of the fluid's force. Furthermore, the coordinated structure of ejector rod 16 and vent 8 further concentrates the ejection force of the fluid at vent 8, preventing it from dissipating. After ejection, the fluid can more easily flow back through vent 8 for recovery under the weight of ejector rod 16, reducing wasted work and fluid usage. The design of ejector rod 16 further enhances the uniformity and stability of the ejection force, ensuring that workpiece 13 does not deflect or deform during the ejection process.

[0082] In one embodiment, the vent hole 8 is a stepped hole, which includes a large hole section 83 and a small hole section 84. The large hole section 83 is located on the side of the small hole section 84 close to the workpiece 13. The ejector rod 16 is located in the large hole section 83 and can be stopped on the step surface of the stepped hole.

[0083] In this embodiment, by setting the vent hole 8 as a stepped hole and making the ejector rod 16 stop on the step surface of the stepped hole, the ejector rod 16 can be placed in a suspended state, and the bottom of the ejector rod 16 can be exposed through the small hole section 84, which makes it easier for the fluid to apply an ejecting force to the ejector rod 16 from the bottom of the ejector rod 16 through the small hole section 84, thereby improving the ejection efficiency of the ejector rod 16.

[0084] In one embodiment, the diameter of the vent hole 8 is between 1 mm and 3 mm.

[0085] In one embodiment, the vent hole 8 and the fluid circulation channel 15 have the same properties and functions, and both are circulation channels for fluid circulation. The only difference is that they are in different structures.

[0086] In one embodiment, the lower mold assembly further includes a driving member, which includes an air supply device and an air supply pipeline. The air supply device is connected to the fluid flow channel 15 through the air supply pipeline.

[0087] The provision of the air supply device and the air supply pipeline makes the supply of fluid more controllable, and the magnitude and duration of the ejection force can be adjusted as needed.

[0088] The air supply device is, for example, an air-inflating workbench 14 , on which the lower template 1 can be placed, and the air vents 8 are connected to the air holes on the air-inflating workbench 14 , so that the lower template 1 can be inflated by the air-inflating workbench 14 .

[0089] In one embodiment, the gas station 14 includes a gas control valve.

[0090] According to an embodiment of the present invention, the hot pressing mold includes an upper mold assembly and a lower mold assembly, and the lower mold assembly is the above-mentioned lower mold assembly.

[0091] The upper mold assembly includes an upper mold plate 9 and an upper cushioning layer 10, and the workpiece 13 is formed on the side of the upper cushioning layer 10 facing away from the upper mold plate 9. The upper cushioning layer 10 includes an upper buffer pad 11 and an upper demolding pad 12, wherein the upper buffer pad 11 is arranged on the upper mold plate 9, and the upper demolding pad 12 is arranged on the upper buffer pad 11, and the workpiece 13 is formed on the side of the upper demolding pad 12 facing away from the upper buffer pad 11.

[0092] This hot pressing mold can not only achieve efficient hot pressing molding, but also use the fluid force to smoothly eject the workpiece after molding, avoiding damage to the workpiece caused by traditional mechanical ejection methods, and improving the integrity and production efficiency of the workpiece. In addition, the design of the flexible ejector tube makes the ejection process smoother, reduces the risk of deformation of the workpiece, is suitable for workpieces of various shapes and sizes, and has broad application prospects. For example, when producing high-precision products such as flexible circuit boards, precision electronic components, and optical lenses, the hot pressing mold can significantly improve the yield rate and production efficiency, reduce the scrap rate, and reduce production costs. At the same time, the design of the mold is also suitable for large-scale manufacturing and automated production lines, and can meet the needs of different production environments. By optimizing the setting of the fluid flow channel and the ejector rod, the hot pressing mold can also provide higher stability and reliability during the molding and ejection process, ensuring the smooth progress of the production process. In summary, the hot pressing mold of the present application has significant advantages and practical value in a variety of application scenarios.

[0093] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0094] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0095] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A lower mold assembly, characterized in that: include: Lower template (1), A positioning structure (3) is provided on the lower template (1), and the positioning structure (3) is configured to position a workpiece; The ejection mechanism (4) has a fluid circulation channel (15), wherein the fluid circulation channel (15) is configured to allow fluid to flow into the channel and utilize the force of the fluid to eject the workpiece from the positioning structure (3).

2. The lower mold assembly according to claim 1, characterized in that The lower mold assembly further comprises a lower cushion layer (2) which is arranged on the lower mold plate (1), and the lower cushion layer (2) is configured to support a workpiece; the ejection mechanism (4) comprises an ejection tube (5), and the ejection tube (5) is arranged on a side of the lower cushion layer (2) facing the workpiece, one end of the ejection tube (5) has a flow port (7), and the other end is closed, and the ejection tube (5) has a stacked state after the fluid is discharged and an expanded state after the fluid is filled.

3. The lower mold assembly according to claim 2, characterized in that: The lower cushion layer (2) is provided with a receiving groove (6), the receiving groove (6) being adapted to the shape of the ejection tube (5) and capable of completely receiving the ejection tube (5) in a stacked state.

4. The lower mold assembly according to claim 2, characterized in that The ejector tube (5) extends along a first direction on the lower template (1), and there are a plurality of ejector tubes (5). The plurality of ejector tubes (5) are arranged at intervals along a second direction on the lower template (1), and a preset angle is formed between the first direction and the second direction.

5. The lower mold assembly according to claim 4, characterized in that: The positioning structure (3) comprises a positioning pin, the ejection tube (5) extends along the first direction, the ejection tube (5) is located on the outer peripheral side of the positioning pin, and forms a preset interval with the positioning pin.

6. The lower mold assembly according to any one of claims 2 to 5, characterized in that: The ejection tube (5) is a flexible non-elastic tube.

7. The lower mold assembly according to claim 1, characterized in that The lower mold assembly further comprises a lower lining layer (2) which is arranged on the lower mold plate (1), and the lower lining layer (2) is configured to support a workpiece; the fluid circulation channel (15) is arranged on the lower lining layer (2), and the fluid circulation channel (15) extends from the bottom of the lower lining layer (2) to a surface close to the workpiece; a vent hole (8) is provided on the lower mold plate (1), and the fluid circulation channel (15) is communicated with the vent hole (8).

8. The lower mold assembly according to claim 7, characterized in that: The vent hole (8) extends from the surface of the lower template (1) away from the lower cushion layer (2) to the surface of the lower template (1) close to the lower cushion layer (2); or, the vent hole (8) includes a first hole segment (81) and a second hole segment (82) that are interconnected, the first hole segment (81) extending from the side surface of the lower template (1) toward the inner side of the lower template (1), and the second hole segment (82) extending from an end of the first hole segment away from the side surface toward the surface of the lower template (1) close to the lower cushion layer (2).

9. The lower mold assembly according to claim 8, characterized in that: The positioning structure (3) comprises a positioning pin, and the fluid circulation channel (15) and the vent hole (8) are both staggered with respect to the positioning pin.

10. The lower mold assembly according to claim 7, characterized in that: Each of the vent holes (8) is provided with an ejector rod (16), the cross-sectional shape of the ejector rod (16) is adapted to the cross-sectional shape of the vent hole (8) and has the same size, and the ejector rod (16) can be completely retracted into the vent hole (8).

11. The lower mold assembly according to claim 10, characterized in that: The vent hole (8) is a stepped hole, comprising a large hole section (83) and a small hole section (84), wherein the large hole section (83) is located on a side of the small hole section (84) close to the workpiece, and the ejector rod (16) is located in the large hole section (83) and can be stopped on the step surface of the stepped hole.

12. The lower mold assembly according to any one of claims 1 to 5 and 7 to 11, characterized in that: The lower mold assembly further includes a driving member, which includes an air supply device and an air supply pipeline, and the air supply device is connected to the fluid circulation channel (15) through the air supply pipeline.

13. A hot pressing mold, characterized in that: The utility model comprises an upper mold assembly and a lower mold assembly, wherein the lower mold assembly is the lower mold assembly according to any one of claims 1 to 12.

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