A glass forming mold applicable to local bending processing of special glass

Abstract

The present invention relates to the technical field of glass reforming, and discloses a glass forming mold suitable for local bending processing of special glass, including an upper mold, a lower mold is arranged below the upper mold, the upper mold and the lower mold are matched in sets to bend the glass ingredients, the upper mold includes a pressing plate and a contact plate, a first channel is arranged on the inner wall of the pressing plate, and a second channel is arranged on the inner wall of the contact plate. The invention is provided with a sealing structure, and the sealing structure can well adapt to two different working states of the coincidence and non-coincidence of the first channel and the second channel. In the non-coincidence state, it realizes air flow guiding and debris blocking through stretching; in the coincidence state, it can also realize the self-cleaning function by using the elastic deformation recovery. This adaptability to different working states enables the upper mold to maintain stable performance throughout the processing process, reduces the faults and problems that may occur due to changes in the working state, and improves the versatility and reliability of the upper mold.

Description

Technical Field

[0001] The invention relates to the technical field of glass reshaping, and in particular to a glass forming mold suitable for local bending processing of special glass. Background Art

[0002] With the rapid development of consumer electronics and high-end industries, the demand for local bending processing of special glass has increased significantly. The structural shape of special glass has become more complex, and the requirements for its local bending and forming processing have become more precise and complex. In actual production, the special glass blank is first accurately positioned on a mold with a heating and cooling system, heated to a specific softening temperature, and the specific structure of the mold is used to bend the glass locally, and then quickly cooled and shaped.

[0003] Under ideal working conditions for local bending of special glass, the specific viscosity of the glass ingredients in the thermoplastic state and the suction force applied by the negative pressure system can effectively prevent the glass ingredients from flowing into the vents. This synergistic mechanism can ensure the smooth flow of the vents, ensure the smooth overflow of gas during the hot pressing process, and maintain the stability of the processing process.

[0004] However, in actual large-scale production and processing, many factors will cause the working state of the vent to deviate from the ideal state. On the one hand, during the hot pressing process, the pressure environment near the vent is not constant, but shows a significant fluctuation characteristic. This pressure fluctuation will disrupt the originally stable flow state of the glass batch and the negative pressure suction field, weakening the barrier effect on the glass batch entering the vent. On the other hand, with the long-term continuous use of the mold, thermal cycles and complex physical and chemical reactions between the glass and the mold continue to occur. In this process, the glass will produce some debris at high temperatures, accompanied by the generation of some volatiles. Under the influence of the complex airflow environment and pressure fluctuations around the vent, these glass debris and volatiles gradually migrate and enter the vent channel. As time accumulates, a large amount of glass debris and volatiles condense and accumulate, eventually causing the vent to become blocked. Once the vent is blocked, the gas generated during the hot pressing process cannot overflow in a timely and smooth manner, which will greatly interfere with the pressure balance in the hot pressing chamber, destroy the uniform heating and forming conditions of the glass, and seriously affect the quality and efficiency of the local bending processing of special glass, causing defects such as bubbles and deformation in the product, reducing the yield and product quality. Summary of the invention

[0005] Technical issues solved

[0006] In view of the above-mentioned shortcomings of the prior art, the present invention provides a glass forming mold suitable for local bending processing of special glass, which can effectively solve the problem of easy blockage of the air outlet channel in the prior art.

[0007] To achieve the above objectives, the present invention is realized through the following technical solutions:

[0008] The present invention provides a glass forming mold applicable to local bending processing of special glass, including:

[0009] An upper mold, with a lower mold disposed below the upper mold. The upper mold and the lower mold are matched in sets to perform bending processing on glass ingredients. The upper mold includes a pressing plate and a contact plate. A first channel is provided on the inner wall of the pressing plate, and a second channel is provided on the inner wall of the contact plate. When the equipment performs bending processing, the first channel and the second channel do not coincide, and the flow channel formed by the first channel and the second channel is bent, increasing the difficulty of the thermoplastic glass overflowing. After the bending processing of the equipment is completed, the first channel and the second channel coincide, and the flow channel formed by the first channel and the second channel is vertical, reducing the difficulty of adhering glass debris;

[0010] A driving system, which controls the displacement of the upper mold and the lower mold, providing a power source for bending processing. The driving system controls the displacement of the pressing plate, and the pressing plate maintains different target positions during and after the bending processing of the equipment;

[0011] Wherein, the pressing plate further includes a sealing structure for providing different state sealing protection for the connection parts of the first channel and the second channel in different positions and states.

[0012] Further, the sealing structure includes a sealing layer made of an elastic material. A first positioning ring in contact with the inner wall of the first channel is provided at the top of the sealing layer, and a second positioning ring in contact with the inner wall of the second channel is provided at the bottom of the sealing layer. A channel with a design of being larger at the top and smaller at the bottom is embedded in the inner wall of the sealing layer.

[0013] Further, a second sealing groove is opened in the lower part of the inner wall of the first channel, and the inner wall of the second sealing groove is snap-fitted with the first positioning ring. A first reinforcing layer is provided below the second sealing groove.

[0014] Further, a first sealing groove is opened in the upper part of the inner wall of the second channel, a second reinforcing layer is provided above the second channel, and the inner wall of the second reinforcing layer is snap-fitted with the second positioning ring.

[0015] Further, the upper part of the inner wall of the first channel adopts an arc design of being smaller at the top and larger at the bottom. A first shallow groove is opened in the inner wall of the first channel, and the first shallow groove adopts an inclined design of being larger at the top and smaller at the bottom. The upper part of the channel is in contact with the bottom end of the first shallow groove.

[0016] Further, a second shallow groove is opened in the inner wall of the second channel, and the second shallow groove adopts an inclined design of being larger at the top and smaller at the bottom. The lower part of the channel is in contact with the top end of the second shallow groove.

[0017] Furthermore, a reinforcing rib net is provided on the outer wall of the channel. The upper part of the reinforcing rib net is fixedly connected to one side of the reinforcement layer, and the lower part of the reinforcing rib net is fixedly connected to the other side of the reinforcement layer.

[0018] The technical solution provided by the present invention has the following beneficial effects compared with the prior art:

[0019] The present invention is provided with an upper mold, and the upper mold is set as a double layer of a pressing plate and a contact plate. The channel one inside the pressing plate and the channel two inside the contact plate are designed to be staggered when the equipment performs bending processing, and a plurality of channel one and channel two are provided. At this time, the connected channel one and channel two are staggered honeycomb channels; the double-layer structure design of the upper mold, combined with the design of the upper-narrow and lower-wide of the shallow groove one, constructs a complex "labyrinth" air flow channel. When the glass approaches the channel, the upper-narrow and lower-wide channel entrance first forms a physical obstacle to it, restricting the entry area of the glass. Coupled with the tortuous path formed by the staggered channels, the glass needs to continuously change the flow direction. In the complex path, the high viscosity and surface tension of the glass work together, making it difficult for the glass to pass through the inside of the channel, greatly reducing the risk of the glass infiltrating into the air outlet and causing blockage. By utilizing the synergistic effect of the physical properties of the glass itself and the channel structure, the possibility of the air outlet being blocked by the glass is reduced from the source, ensuring the long-term stable operation of the air outlet system of the upper mold during the processing of special glass.

[0020] The present invention is provided with a sealing structure, and this sealing structure can well adapt to the two different working states of the coincidence and non-coincidence of channel one and channel two. In the non-coincidence state, it realizes air flow guiding and debris blocking through stretching; in the coincidence state, it can realize the self-cleaning function by using the elastic deformation recovery. This adaptability to different working states enables the upper mold to maintain stable performance throughout the processing process, reduces the faults and problems that may occur due to the change of the working state, and improves the versatility and reliability of the upper mold.

[0021] The present invention is provided with a sealing layer. While guiding the air flow, the sealing structure can also play a good role in blocking debris. After the elastic sealing layer is stretched, the size of the channel becomes smaller, forming a physical filtering mechanism. For fine debris, due to the limitation of the channel size, they cannot pass through the channel and continue to enter the pore, so they are effectively intercepted inside the equipment, greatly reducing the risk of the pore being blocked by debris. This blocking mechanism is based on the physical size screening principle and can prevent debris from damaging the air outlet at the source. Description of the Drawings

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0023] Figure 1 Schematic diagram of the overall structure of the embodiment of the present invention;

[0024] Figure 2 Schematic diagram of the upper and lower die structures of the embodiment of the present invention;

[0025] Figure 3 Schematic cross-sectional view of the upper die structure during bending processing of the embodiment of the present invention;

[0026] Figure 4 Schematic cross-sectional view of the upper die structure after the bending processing of the embodiment of the present invention is completed;

[0027] Figure 5 For the embodiment of the present invention Figure 3 Enlarged schematic diagram of the sealing structure at position A;

[0028] Figure 6 For the embodiment of the present invention Figure 4 Enlarged schematic diagram of the sealing structure at position B;

[0029] Figure 7 Schematic diagram of the split sealing structure of the embodiment of the present invention.

[0030] The reference numerals in the figure respectively represent: 1, upper die; 11, pressing plate; 12, contact plate; 13, channel one; 131, shallow groove one; 14, reinforcement layer one; 15, channel two; 151, shallow groove two; 16, sealing groove one; 17, sealing groove two; 18, reinforcement layer two; 19, sealing structure; 191, positioning ring one; 192, positioning ring two; 193, sealing layer; 1931, channel; 1932, reinforcing rib mesh; 2, lower die; 3, drive system. Detailed implementation manners

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0032] The following further describes the present invention in conjunction with the embodiments.

[0033] Embodiment:

[0034] Please refer to Figures 1 - 7 , the present invention provides a technical solution for a glass forming mold applicable to local bending processing of special glass: Refer to Figure 1 , the device includes an upper mold 1 and a driving system 3. A lower mold 2 is arranged below the upper mold 1. The upper mold 1 and the lower mold 2 are matched in sets to bend the glass ingredients. The driving system 3 controls the displacement of the upper mold 1 and the lower mold 2, providing a power source for the bending processing.

[0035] Refer to Figure 2 , Figure 3 and Figure 4 , the upper mold 1 includes a pressing plate 11 and a contact plate 12. A first channel 13 is arranged on the inner wall of the pressing plate 11, and a second channel 15 is arranged on the inner wall of the contact plate 12. The flow channel formed by the first channel 13 and the second channel 15 exists as the air outlet of the device; the driving system 3 controls the displacement of the pressing plate 11. During and after the bending processing of the device, the pressing plate 11 maintains at different target positions. During the bending processing of the device, the first channel 13 and the second channel 15 do not overlap, and the flow channel formed by the first channel 13 and the second channel 15 is bent. After the bending processing of the device is completed, the first channel 13 and the second channel 15 overlap, and the flow channel formed by the first channel 13 and the second channel 15 is vertical;

[0036] The upper mold 1 is set as a double layer of the pressing plate 11 and the contact plate 12. The first channel 13 inside the pressing plate 11 and the second channel 15 inside the contact plate 12 are designed in a staggered manner during the bending processing of the device, and the first channel 13 and the second channel 15 are set to be multiple. At this time, the connected first channel 13 and second channel 15 are staggered channels, and combined with the design of the first shallow groove 131 with a narrow upper part and a wide lower part, a complex "labyrinth" air flow channel is constructed;

[0037] When the glass approaches the channel, the lower-narrow and upper-wide inlet of the second shallow groove 151 first forms a physical obstacle to it, restricting the entry area of the glass in the thermoplastic state. The narrow-upper and wide-lower channel exerts a pressure obstacle on its movement. Coupled with the tortuous path formed by the staggered channels, the glass needs to continuously change the flow direction. In the complex path, the high viscosity and surface tension of the glass act together, making it difficult for the glass to pass through the inside of the channel, greatly reducing the risk of the glass infiltrating into the air outlet and causing blockage. Utilizing the synergistic effect of the physical properties of the glass itself and the channel structure, the possibility of the air outlet being blocked by the glass is reduced from the root, ensuring the long-term stable operation of the air outlet system of the upper mold 1 during the processing of special glass.

[0038] During the hot pressing process, when the air flow passes through the staggered honeycomb channels, a specific air flow field will be formed. The staggered distribution of the channels causes the air flow to generate complex flow patterns when passing through. Under the action of the air flow, the glass tends to flow along the direction away from the channels, further reducing the probability of the glass entering the channels. When the glass flows on the surface of the upper mold 1, the air flow flows out from the staggered channels, forming an air flow barrier between the glass and the channels, effectively preventing the direct contact between the glass and the channels, thereby reducing the risk of glass infiltration.

[0039] During the local bending process of special glass, excessive air pressure fluctuations can cause bubbles to form on the glass surface, affecting the transparency and optical properties of the glass, and may also cause poor fitting between the glass and the upper mold 1 and the lower mold 2, resulting in inaccurate bending shapes of the glass. When the gas of the present invention is discharged, it will preferentially choose the path with less resistance to pass through the staggered channels. This air flow distribution method can effectively reduce local air pressure fluctuations. The asymmetric flow channels formed by the staggered holes and grooves optimize the air flow discharge path, maintain a stable air pressure environment, ensure that the glass is bent and formed under a uniform pressure field, and improve the processing quality and yield of special glass.

[0040] The pressing plate 11 with a double-layer structure design, its outer layer structure can play a certain heat insulation role, reducing the heat dissipation from the inside of the pressing plate 11 to the outside, which helps to maintain the stability of the temperature inside the pressing plate 11. In the local bending process of special glass, a stable and uniform temperature field is very important for the softening and bending process of the glass. A uniform temperature distribution can make the glass evenly heated in the pressing plate 11, avoiding uneven bending or cracks in the glass caused by local overheating or overcooling; at the same time, the honeycomb channel structure increases the surface area of the pressing plate 11 to a certain extent, which is conducive to the uniform conduction of heat inside the pressing plate 11, further improving the uniformity of the temperature inside the pressing plate 11, thereby improving the quality and consistency of special glass processing.

[0041] Reference Figure 3 、 Figure 4 、 Figure 5 and Figure 6 , the upper part of the inner wall of the first channel 13 adopts an arc design with a smaller upper part and a larger lower part. The inner wall of the first channel 13 is provided with a first shallow groove 131, and the first shallow groove 131 adopts an inclined design with a larger upper part and a smaller lower part. The inner wall of the second channel 15 is provided with a second shallow groove 151, and the second shallow groove 151 adopts an inclined design with a larger upper part and a smaller lower part.

[0042] When the upper die 1 and the lower die 2 are in a non-working state, the pressing plate 11 moves under the control of the driving system 3, so that the first channel 13 of the pressing plate 11 and the second channel 15 of the contact plate 12 coincide to form a complete channel. At this time, air is blown reversely from above the channel, and the upper-wide and inner-narrow shallow groove structure composed of the first shallow groove 131 and the second shallow groove 151 on the inner wall of the channel plays a key role. According to the principle of fluid mechanics, when the air flow passes through a channel that is wider at the top and narrower at the bottom, due to the gradually decreasing cross-sectional area, the air flow velocity will increase significantly. The high-speed air flow generates local turbulence and strong shear forces in the channel, and these turbulence and shear forces can effectively act on the deposits on the pore wall. For the deposits such as condensed glass debris and volatiles accumulated on the pore wall after long-term use, the shear force generated by the high-speed air flow can peel them off from the pore wall, and make them discharged from the channel along with the air flow, realizing the efficient cleaning of the inner walls of the first channel 13 and the second channel 15, maintaining the smoothness of the channel, and preparing for the next processing.

[0043] By effectively preventing glass from infiltrating into the channel and having the ability to clear blockages itself, the pressing plate 11 and the contact plate 12 can maintain a good working state, reducing the situation where the pressing plate 11 needs to be frequently cleaned or replaced due to the blockage of the first channel 13 and the second channel 15. This not only reduces the production cost, but also extends the overall service life of the pressing plate 11. In addition, a stable air pressure environment and a uniform temperature field help to reduce the concentration of thermal stress and mechanical stress in the pressing plate 11 during use, reducing the risk of damage such as deformation and cracking of the pressing plate 11, and further improving the reliability and durability of the pressing plate 11.

[0044] Reference Figure 5 、 Figure 6 and Figure 7 , The pressing plate 11 further includes a sealing structure 19 for protecting the connection between the first channel 13 and the second channel 15 in different position states in different states. The sealing structure 19 includes a sealing layer 193 made of an elastic material. A first positioning ring 191 in contact with the inner wall of the first channel 13 is arranged at the top of the sealing layer 193, and a second positioning ring 192 in contact with the inner wall of the second channel 15 is arranged at the bottom of the sealing layer 193. A second sealing groove 17 is opened in the lower part of the inner wall of the first channel 13, and the inner wall of the second sealing groove 17 is engaged with the first positioning ring 191. A first reinforcing layer 14 is arranged below the second sealing groove 17. A first sealing groove 16 is opened in the upper part of the inner wall of the second channel 15, and a second reinforcing layer 18 is arranged above the second channel 15. The inner wall of the second reinforcing layer 18 is engaged with the second positioning ring 192. The outer surface of the sealing structure 19 is parallel to the inner wall of the complete channel formed when the first channel 13 and the second channel 15 coincide. A channel 1931 designed to be larger at the top and smaller at the bottom is embedded in the inner wall of the sealing layer 193. The upper part of the channel 1931 is attached to the bottom end of the first shallow groove 131, and the lower part of the channel 1931 is attached to the top end of the second shallow groove 151. Due to the engagement design of the sealing layer 193 with the second sealing groove 17 and the first sealing groove 16, the first channel 13 and the second channel 15 can maintain good sealing in different working states.

[0045] When the first channel 13 and the second channel 15 do not overlap, the elastic sealing layer 193 in the sealing structure 19 is in a stretched state. The upper and lower parts of the outer wall of the sealing layer 193 are fixed to the first reinforcement layer 14 and the second reinforcement layer 18 respectively. The stretching of the sealing layer 193 only occurs in the middle of the sealing layer 193. The two ends of the sealing layer 193 still maintain the size matching the first shallow groove 131 and the second shallow groove 151. The stretched sealing layer 193 forms a stepped contraction flow channel. The cross-sectional area of the part close to the second shallow groove 151 is reduced. The inclined and stretched sealing layer 193 shields the upper surface of the second channel 15 to intercept smaller-sized debris by using the inertial separation effect, thereby improving the interception efficiency. At the same time, the size of the channel 1931 of the elastic sealing layer 193 is synchronously reduced, and fine particles are further captured through the screening effect, improving the interception rate. The inclination angle of the surface channel 1931 of the sealing layer 193 in the stretched state guides the air flow to flow along a preset path, realizing low-resistance air flow guidance, avoiding the disorder and irregular diffusion of the air flow in the channel, enabling the air flow to pass through the channel more orderly, and improving the efficiency of gas discharge. The first positioning ring 191 and the second positioning ring 192 can prevent gas and debris from leaking through the gap during this process;

[0046] While guiding the air flow, the sealing structure 19 can also play a good role in blocking debris. After the elastic sealing layer 193 is stretched, the size of the channel 1931 becomes smaller, forming a physical filtration mechanism. For fine debris, due to the limitation of the size of the channel 1931, they cannot continue to enter the pore through the channel 1931 and are thus effectively intercepted inside the device, greatly reducing the risk of the pore being blocked by debris. This blocking mechanism is based on the physical size screening principle and can prevent debris from damaging the air outlet at the source.

[0047] When the first channel 13 and the second channel 15 overlap, the elastic deformation of the elastic sealing layer 193 is restored. During this process, the debris originally attached to the surface of the sealing layer 193 and inside the channel 1931 will become loose due to the shape change of the sealing layer 193. This is because when the elastic material recovers from deformation, it will generate tiny vibrations and displacements, weakening the adhesion between the debris and the surface of the sealing layer 193. After the elastic sealing layer 193 recovers its deformation and the debris on its surface becomes loose, through the blowing operation, these loose debris can be easily cleaned from the surface of the sealing layer 193 and inside the channel 1931. This self-cleaning function enables the upper mold 1 to regularly clean the sealing structure 19 during long-term use, maintaining its good working state, reducing the frequency and difficulty of manual cleaning, and improving the use efficiency and reliability of the upper mold 1. The structures of the first positioning ring 191, the second positioning ring 192, and the sealing layer 193 ensure the overall sealing of the channel, avoiding gas leakage during the blowing cleaning process, thereby ensuring the stability of the internal pressure of the upper mold 1 and being conducive to improving the quality of local bending processing of special glass.

[0048] This adaptability to different working states enables the upper die 1 to maintain stable performance throughout the machining process, reducing malfunctions and problems that may occur due to changes in the working state, and improving the versatility and reliability of the upper die 1. Since the sealing structure 19 can effectively block debris from entering the first channel 13 and the second channel 15 and has a self-cleaning function, the possibility of blockage of the first channel 13 and the second channel 15 is reduced, and the damage to the upper die 1 caused by the blockage of the first channel 13 and the second channel 15 is decreased. At the same time, the good sealing performance also helps to maintain a stable environment inside the upper die 1, reducing corrosion and wear of other die components caused by gas leakage and impurity entry. Therefore, this sealing structure 19 can, to a certain extent, extend the service life of the die and reduce production costs.

[0049] The first positioning ring 191 and the second positioning ring 192 are connected by snap fit, supporting quick disassembly and replacement, and reducing maintenance costs; under the non-coincident state, the air flow guidance reduces turbulent dissipation, the system energy consumption decreases, and the energy efficiency is optimized; there is multi-condition compatibility, and the channels 1931 of the elastic sealing layer 193 can adapt to different shallow groove configurations such as V-shaped and U-shaped, and the aperture or groove depth can be quickly adjusted by replacing the sealing structure 19.

[0050] Reference Figure 7 , reinforcing rib nets 1932 are arranged on the outer wall of the channels 1931. The upper part of the reinforcing rib nets 1932 is fixedly connected to the side of the first reinforcing layer 14, and the lower part of the reinforcing rib nets 1932 is fixedly connected to the side of the second reinforcing layer 18. The sealing layer 193 is made of a graphite composite material to compensate for the linear expansion difference caused by temperature difference; a hard wear-resistant coating is coated on the surface of the elastic sealing layer 193 to effectively resist friction and wear with other components during the deformation process, reducing surface damage. At the same time, the hardened coating can also, to a certain extent, limit the generation and expansion of microcracks on the surface of the sealing ring, improving its fatigue resistance;

[0051] The reinforcing rib nets 1932 are a constructed three-dimensional reinforcing network structure or an embedded fiber-reinforced layer. When the sealing layer 193 undergoes elastic deformation, the reinforcing rib nets 1932 can disperse stress, avoiding excessive stress concentration on the bulk material of the sealing layer 193, effectively enhancing the overall rigidity of the sealing layer 193, and reducing the accumulation of plastic deformation; the fiber-reinforced layer can greatly improve the tensile strength and fatigue resistance of the sealing layer 193 because the fiber has excellent tensile properties and can effectively prevent the expansion of microcracks inside the sealing layer 193, thereby extending its fatigue life;

[0052] The corner parts of the sealing layer 193 are rounded and chamfered, changing the sharp right angles and acute angles to rounded corners and chamfers, so that the stress transitions smoothly at these parts, reducing the local stress peak value, effectively eliminating stress concentration points, and improving the fatigue resistance of the sealing layer 193;

[0053] In addition, shape memory alloys are embedded inside the sealing layer 193 or at key positions. By heating the memory alloy to reach its phase transition temperature, the memory alloy will return to its original shape, thereby generating a certain restoring force on the sealing layer 193, helping the sealing layer 193 to partially recover its shape, reducing the accumulation of plastic deformation, realizing the self-restoration of the sealing layer 193, and improving the service life of the sealing structure 19.

[0054] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A glass forming mold applicable to local bending processing of special glass, characterized in that, Including: An upper die (1), a lower die (2) is arranged below the upper die (1), the upper die (1) and the lower die (2) are matched in sets to bend glass ingredients, the upper die (1) includes a pressing plate (11) and a contact plate (12), a first channel (13) is arranged on the inner wall of the pressing plate (11), a second channel (15) is arranged on the inner wall of the contact plate (12), when the equipment is performing bending processing, the first channel (13) and the second channel (15) do not coincide, and the flow channel formed by the first channel (13) and the second channel (15) is bent, increasing the difficulty of the thermoplastic glass overflowing. After the bending processing of the equipment is completed, the first channel (13) and the second channel (15) coincide, and the flow channel formed by the first channel (13) and the second channel (15) is vertical, reducing the difficulty of adhering glass debris; A driving system (3), the driving system (3) controls the displacement of the upper die (1) and the lower die (2), providing a power source for the bending processing, the driving system (3) controls the displacement of the pressing plate (11), and during and after the bending processing of the equipment, the pressing plate (11) maintains at different target positions; Wherein, the pressing plate (11) further includes a sealing structure (19) for sealing and protecting the joints of the first channel (13) and the second channel (15) in different position states; The sealing structure (19) includes a sealing layer (193) made of an elastic material, a first positioning ring (191) in contact with the inner wall of the first channel (13) is arranged at the top end of the sealing layer (193), a second positioning ring (192) in contact with the inner wall of the second channel (15) is arranged at the bottom end of the sealing layer (193), and a channel (1931) designed with a larger upper part and a smaller lower part is embedded in the inner wall of the sealing layer (193).

2. The glass forming mold applicable to local bending processing of special glass according to claim 1, wherein: A second sealing groove (17) is opened in the lower part of the inner wall of the first channel (13), the inner wall of the second sealing groove (17) is engaged with the first positioning ring (191), and a first reinforcing layer (14) is arranged below the second sealing groove (17).

3. A glass forming mold applicable to local bending processing of special glass according to claim 1, characterized in that: A first sealing groove (16) is opened in the upper part of the inner wall of the second channel (15), a second reinforcing layer (18) is arranged above the second channel (15), and the inner wall of the second reinforcing layer (18) is engaged with the second positioning ring (192).

4. A glass forming mold applicable to local bending processing of special glass, characterized in that: The upper part of the inner wall of the first channel (13) adopts an arc design with a smaller upper part and a larger lower part, a first shallow groove (131) is opened in the inner wall of the first channel (13), the first shallow groove (131) adopts an inclined design with a larger upper part and a smaller lower part, and the upper part of the channel (1931) is attached to the bottom end of the first shallow groove (131).

5. A glass forming mold applicable to local bending processing of special glass according to claim 3, characterized in that: A second shallow groove (151) is opened in the inner wall of the second channel (15), the second shallow groove (151) adopts an inclined design with a larger upper part and a smaller lower part, and the lower part of the channel (1931) is attached to the top end of the second shallow groove (151).

6. A glass forming mold applicable to local bending processing of special glass according to claim 3, characterized in that: Reinforcing rib meshes (1932) are arranged on the outer wall of the channel (1931), the upper part of the reinforcing rib meshes (1932) is fixedly connected with the side of the first reinforcing layer (14), and the lower part of the reinforcing rib meshes (1932) is fixedly connected with the side of the second reinforcing layer (18).

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