Multi-slot graphite mold and its application hot bending machine

Abstract

The utility model discloses a kind of multi-slot graphite mould and the hot bending machine of application thereof, it is related to graphite mould technical field.The multi-slot graphite mould, comprising: a die female die;Several cavities are opened in the die female die according to preset order;And several positioning blocks are set between adjacent cavities, and respectively located at the two sides of the cavity;Wherein, several positioning blocks are sequentially arranged in the cavity according to glass shape, to be separated to form several curved surface glass accommodating cavities with boundary.The utility model solves the problem that traditional hot bending graphite mould usually only exists one cavity and core, glass is placed in the cavity, enters hot bending machine and is preheated, after temperature reaches, is formed by pressure by pneumatic cylinder, but this type of mould can only process a piece of glass at a time, seriously restricts the problem of hot bending glass processing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of graphite mold technology, and in particular to a multi-slot graphite mold and a hot bending machine for its application. Background Technology

[0002] Curved glass, with its unique curved design, pleasant tactile experience, and superior durability, is gradually becoming a standard material in high-end electronic products. Furthermore, curved glass is showing great application potential in the automotive, medical, and home furnishing industries. Curved glass is a type of glass product that, through special processing, presents a three-dimensional effect, offering not only aesthetic appeal but also excellent wear resistance and impact resistance. However, the high cost of graphite mold processing, coupled with significant energy consumption, makes the production of free-form surface reflectors extremely expensive.

[0003] Traditional hot bending graphite molds typically consist of only one cavity and core. The glass is placed inside the cavity and preheated in the hot bending machine. Once the temperature is reached, it is pressed and shaped by a cylinder. However, this type of mold can only process one piece of glass at a time, severely limiting the processing efficiency of hot-bent glass. Currently, no effective solution has been proposed to address these problems. Utility Model Content

[0004] Purpose of the utility model: To provide a multi-slot graphite mold and a hot bending machine for its application, so as to at least solve one of the problems existing in the prior art.

[0005] Technical solution: A multi-slot graphite mold, comprising: One mold cavity; Several cavities are formed in the mold cavity according to a preset sequence; and Several positioning blocks are disposed between adjacent cavities and are respectively located on both sides of the cavity; In this process, several positioning blocks are sequentially and orderly arranged in the cavity according to the shape of the glass to separate and form several curved glass receiving cavities with boundaries.

[0006] Preferably, a mold punch is also provided on the mold cavity, and the mold punch is provided with a plurality of cores that are adapted to the cavity of the mold cavity.

[0007] Preferably, the number of the plurality of cavities and the plurality of cores are three, the three cavities and the three cores are respectively located in the central region of the mold cavity and the mold punch, and the three cavities have the same shape and the three cores have the same shape.

[0008] Preferably, the die cavity has graphite grooves arranged opposite each other along its length, and the die punch has graphite protrusions that match the graphite grooves.

[0009] Preferably, the outer edges of the graphite groove and the graphite protrusion are provided with draft radii to prevent the mold from getting stuck when the mold is closed. The draft radius is R3-R5.

[0010] Preferably, the assembly clearance between the graphite groove and the graphite protrusion is 10-15 microns.

[0011] Preferably, the height of the graphite bump is more than 5 mm higher than the height of the core.

[0012] Preferably, the mold punch has several staggered venting grooves above it, which are used to vent air and reduce embossing.

[0013] Preferably, the positioning block is a glass positioning block, which fits tightly with the cavity, and the glass positioning block is provided with a finger groove.

[0014] To achieve the above objectives, according to another aspect of this application, a hot bending machine is also provided.

[0015] The hot bending machine according to this application includes the aforementioned multi-slot graphite mold.

[0016] Beneficial effects: In this embodiment, by adding several cavities, several positioning blocks are sequentially and orderly arranged in the cavity according to the shape of the glass to form several curved glass receiving cavities with boundaries, thereby achieving the purpose of simultaneously producing and processing multiple pieces of glass, thus realizing the technical effect of improving processing efficiency. This solves the technical problem that traditional hot bending graphite molds usually only have one cavity and core. The glass is placed inside the cavity and enters the hot bending machine for preheating. After the temperature is reached, it is pressed and shaped by a cylinder. However, this type of mold can only process one piece of glass at a time, which seriously restricts the processing efficiency of hot bending glass. Attached Figure Description

[0017] Figure 1 This is a perspective view of the multi-slot graphite mold of this utility model; Figure 2 This is a top view of the multi-slot graphite mold of this utility model; Figure 3 This is a front view of the multi-slot graphite mold of this utility model; Figure 4 This is a partially enlarged view of the multi-slot graphite mold of this utility model; and Figure 5This is a cross-sectional view of the multi-slot graphite mold of this utility model.

[0018] The attached figures are labeled as follows: 10. Mold cavity; 20. Cavity; 30. Positioning block; 40. Die punch; 50. Core; 60. Graphite groove; 70. Graphite bumps; 80. Draft fillet; 90. Exhaust duct. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0020] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0021] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] like Figure 1-5 As shown, this application relates to a multi-slot graphite mold and a hot bending machine for its application. Figure 1 As shown, the multi-groove graphite mold includes: a mold cavity 10; the mold groove refers to the basic body and main structure of the mold, and can also achieve a good fit with the upper mold, thereby ensuring a good molding effect.

[0024] Several cavities 20 are opened in the mold cavity 10 in a preset order; by processing recessed parts on the mold cavity 10, the shape and size of the recessed parts determine the outer contour of the final molded glass product.

[0025] It should be noted that cavity 20 is a graphite cavity 20.

[0026] Several positioning blocks 30 are disposed between adjacent cavities 20 and are located on both sides of the cavity 20 respectively; they can achieve good positioning and fixing effects, thereby ensuring the effect of stable glass assembly.

[0027] In this process, several positioning blocks 30 are sequentially and orderly arranged within the cavity 20 according to the shape of the glass to separate and form several curved glass receiving cavities with boundaries. The final, precise closed space formed by the sides of the positioning blocks 30 and the bottom of the cavity 20 constitutes the mold cavity. The flat glass to be processed is placed in the mold cavity and heated and pressurized to accurately replicate the shape and size of the receiving cavity, thereby obtaining the desired curved glass.

[0028] Preferred products are those of the same part number that are hot-bent using multi-slot graphite molds.

[0029] As can be seen from the above description, this application achieves the following technical effects: In this embodiment, by adding several cavities 20, several positioning blocks 30 are sequentially and orderly arranged in the cavity 20 according to the shape of the glass to form several curved glass receiving cavities with boundaries, thereby achieving the purpose of simultaneously producing and processing multiple pieces of glass, thus realizing the technical effect of improving processing efficiency. This solves the technical problem that traditional hot bending graphite molds usually only have one cavity 20 and core 50. The glass is placed inside the cavity 20 and enters the hot bending machine for preheating. After the temperature is reached, it is pressed and shaped by a cylinder. However, this type of mold can only process one piece of glass at a time, which seriously restricts the processing efficiency of hot bending glass.

[0030] This application has the following beneficial effects: Because the graphite mold has multiple cavities 20 and cores 50, it can process multiple pieces of glass at once, effectively utilizing the space of the graphite mold. Compared with traditional hot bending graphite molds, its processing efficiency can be increased by 200%, saving 66.66% of graphite material, thereby saving the processing cost of graphite molds and saving about 30% of electricity. Under full production capacity, it can effectively reduce the cost of equipment, labor, and factory space.

[0031] like Figure 5 As shown, a mold punch 40 is also provided on the mold cavity 10, and the mold punch 40 is provided with a plurality of cores 50 that are adapted to the cavity 20 of the mold cavity 10. It can be understood that the mold punch 40 is an upper mold that matches the mold cavity 10. When the mold is closed, the punch moves downward and closes with the mold cavity to form the final sealed molding space.

[0032] It should be noted that cavity 20 is graphite core 50.

[0033] Specifically, the mold cavity 10 is provided with a plurality of graphite cavities 20 that are consistent with the shape of the glass, and the mold punch 40 is provided with graphite cores 50 that are the same shape and similar in size as the cavities 20. The mold has three graphite cavities 20 and three graphite cores 50. Glass positioning blocks 30 are placed near the three cavities 20 in the mold cavity 10 according to the cutting size of the curved glass and the amount of glass expansion. The central cavity 20 can share a glass positioning block 30 with the two side cavities 20.

[0034] The core 50 refers to the downward-protruding part on the die punch 40. Its shape precisely matches (fits) the cavity 20 on the die. When the mold is closed, the core 50 is embedded in the cavity 20 of the die, and the gap between them is the space where the glass is finally pressed and formed. This achieves the final forming effect, whereas the cavity of the die 10 alone can only shape the bottom and sides of the glass. The addition of the core 50 shapes the top surface of the glass, thus enabling the manufacture of curved glass; at the same time, it also allows for precise control of thickness. The fit clearance between the core 50 and the cavity 20 determines the final thickness of the glass product, and this dimension can be controlled very precisely through precision machining.

[0035] Furthermore, the number of the plurality of cavities 20 and the plurality of cores 50 are three each. The three cavities 20 and the three cores 50 are located in the central areas of the mold cavity 10 and the mold punch 40, respectively, and the three cavities 20 and the three cores 50 are identical in shape. It is understood that this ensures that heat and pressure are symmetrically distributed on the mold during heating and pressurization, greatly reducing problems such as mold deformation and stress concentration caused by uneven force or heating. Simultaneously, it guarantees product consistency; the symmetrical layout ensures that the thermodynamic environment within the three cavities 20 is almost identical, thus guaranteeing that the three products produced in the same batch have extremely high dimensional and performance consistency. Furthermore, it maximizes production efficiency; under the premise of ensuring quality, the three cavities represent a highly optimized balance between efficiency, mold size, cost, and thermal balance.

[0036] like Figure 3 As shown, the die cavity 10 has graphite grooves 60 arranged opposite each other along its length, and the die punch 40 is provided with graphite protrusions 70 that match the graphite grooves 60. This achieves precise guiding and positioning, ensuring that the upper die punch can accurately and repeatedly align with the lower die cavity, preventing misalignment between the core 50 and the cavity 20.

[0037] Specifically, both the die punch 40 and the die cavity 10 have graphite protrusions 70 of the same shape and similar size along their length edges.

[0038] like Figure 4 As shown, the outer edges of the graphite groove 60 and the graphite protrusion 70 are provided with draft radius 80 to prevent the mold from getting stuck when the mold is closed. The draft radius 80 is R3-R5. This draft radius 80 provides excellent guidance; when the die punch 40 and die cavity 10 close, even with precision errors in the hot bending machine's robotic arm, the two draft radii 80, through mutual contact, can guide the graphite protrusion 70 into the graphite groove 60. This prevents jamming and wear during die closing, as the rounded corners guide the protrusion smoothly into the groove, greatly reducing the risk of mechanical interference and jamming. Without the rounded corners, sharp edges are very prone to collisions, scratches, or even jamming due to minor misalignments or debris, leading to die damage.

[0039] Furthermore, the assembly clearance allowance between the graphite groove 60 and the graphite protrusion 70 is 10-15 microns. This ensures that the mold punch 40 and the mold die 10 have mutual positioning while minimizing the relative movement between them, thus guaranteeing the hot bending performance of the curved glass.

[0040] Furthermore, the height of the graphite bump 70 is more than 5mm higher than the height of the core 50. It can be understood that, while ensuring that the core 50 can effectively contact the glass for heat conduction during mold closing, the graphite bump 70 and the graphite groove 60 will have at least 5mm of overlap, which can effectively ensure that the mold cavity 10 can move while driving the mold punch 40 to move.

[0041] like Figure 2 As shown, a plurality of venting grooves 90 are staggered above the mold punch 40. The venting grooves 90 are used for venting and reducing embossing. It can be understood that by providing venting grooves 90 above the mold punch 40, not only can venting be achieved, but the pressure on the mold during molding can also be reduced, thereby reducing the formation of glass mold marks.

[0042] Furthermore, the positioning block 30 is a glass positioning block 30, which is tightly fitted with the cavity 20, and a finger groove is provided on the glass positioning block 30. It can be understood that through the tight fit, the positioning block 30 and the cavity 20 adopt an interference or zero-clearance fit to ensure that it will not shift due to vibration or glass material flow during operation; at the same time, by providing the finger groove, a groove can be machined on the positioning block 30 to facilitate finger pinching or tool hooking.

[0043] This application also relates to a hot bending machine, including the aforementioned multi-slot graphite mold.

[0044] This application also relates to a method of using a hot-bending graphite mold, which, using the above-mentioned multi-groove graphite mold, further includes the following steps: First, the hot bending machine uses a combination of a cylinder-driven robotic arm and a suction cup to grip the mold punch 40. Then, the flat glass to be processed is precisely placed on the mold cavity 10 by the glass positioning block 30, and the robotic arm lowers the mold punch 40 to close the mold. Finally, the multi-slot graphite mold is pushed into the hot bending machine by the push rod for hot pressing.

[0045] Specifically, when in use, the hot bending machine uses a combination of a cylinder-driven robotic arm and a flexible gripper to grasp the mold punch 40. Then, the flat glass to be processed is precisely placed on the mold cavity 10 by the glass positioning block 30. The robotic arm lowers the mold punch 40 by the action of the draft radius 80 to close the mold. There will be at least 5mm of overlap between the graphite protrusion 70 and the graphite groove 60. Then, the mold cavity 10 is pushed by the push rod, and then the mold punch 40 is driven into the hot bending machine to start the hot pressing process.

[0046] This application also has the following beneficial effects: 1. Significantly improves production efficiency. Traditionally, a single-slot mold can only produce one product in one heating and pressurization process. This application, through a multi-slot structure, can produce multiple products (depending on the number of cavities 20) in one molding cycle, which multiplies the output per unit time and greatly reduces the production cost and time cost of a single product.

[0047] 2. To ensure product consistency and high precision, all products are molded in one go under the same temperature and pressure conditions, ensuring a high degree of consistency in size and shape for products in the same batch.

[0048] 3. Easy to maintain and replace. If the side of a certain cavity is worn due to long-term use, only the corresponding positioning block 30 needs to be replaced, without scrapping the entire expensive mold cavity 10. This saves costs and ensures that the mold can maintain its initial accuracy for a long time.

[0049] 4. Optimize the mold structure and thermal field distribution, structural strength, and positioning block 30 divides the large cavity 20 into small units, which enhances the overall structural rigidity of the mold and reduces the risk of deformation or cracking under high temperature and high pressure.

[0050] 5. Thermal uniformity: Because graphite itself has good thermal conductivity, it can ensure that heat is evenly conducted throughout the mold, avoiding internal stress, deformation or optical defects caused by uneven heating of the glass due to temperature differences.

[0051] 6. Enhanced design flexibility and adaptability, enabling rapid changeover. If it is necessary to produce curved glass of different shapes or sizes, a new set of positioning blocks 30 can be redesigned and processed, and installed into the existing mold cavity 10 and cavity 20, thus achieving production flexibility.

[0052] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and all such equivalent transformations fall within the protection scope of the present invention.

Claims

1. A multi-slot graphite mold, characterized in that, include: A die cavity (10); Several cavities (20) are opened in the mold cavity (10) in a preset order; and Several positioning blocks (30) are disposed between adjacent cavities (20) and are respectively located on both sides of the cavity (20); In this process, several positioning blocks (30) are arranged sequentially and orderly in the cavity (20) according to the shape of the glass to separate and form several curved glass receiving cavities with boundaries.

2. The multi-slot graphite mold according to claim 1, characterized in that, A mold punch (40) is also provided on the mold cavity (10), and the mold punch (40) is provided with a plurality of cores (50) that are adapted to the cavity (20) of the mold cavity (10).

3. The multi-slot graphite mold according to claim 2, characterized in that, The number of the plurality of cavities (20) and the plurality of cores (50) are three respectively. The three cavities (20) and the three cores (50) are located in the central regions of the mold cavity (10) and the mold punch (40) respectively, and the three cavities (20) have the same shape and the three cores (50) have the same shape.

4. The multi-slot graphite mold according to claim 2, characterized in that, The die cavity (10) has graphite grooves (60) arranged opposite each other along its length direction, and the die punch (40) is provided with graphite protrusions (70) that match the graphite grooves (60).

5. The multi-slot graphite mold according to claim 4, characterized in that, The outer edges of the graphite groove (60) and the graphite protrusion (70) are provided with draft radii (80) to prevent the mold from getting stuck when the mold is closed; The draft radius (80) is R3-R5.

6. The multi-slot graphite mold according to claim 4, characterized in that, The assembly clearance allowance between the graphite groove (60) and the graphite bump (70) is 10-15 mil.

7. The multi-slot graphite mold according to claim 4, characterized in that, The height of the graphite bump (70) is more than 5 mm higher than the height of the core (50).

8. The multi-slot graphite mold according to claim 2, characterized in that, The mold punch (40) has several staggered venting grooves (90) above it, which are used to vent air and reduce embossing.

9. The multi-slot graphite mold according to claim 1, characterized in that, The positioning block (30) is a glass positioning block (30), which fits tightly with the cavity (20), and a finger groove is provided on the glass positioning block (30).

10. A hot bending machine, characterized in that, Including the multi-slot graphite mold as described in any one of claims 1-9.

Images