Glass forming mold suitable for local bending processing of special glass

Abstract

The invention relates to the technical field of glass reforming, and discloses a glass forming mold suitable for local bending processing of special glass, the glass forming mold comprises an upper mold, a lower mold is arranged below the upper mold, the upper mold and the lower mold are matched to perform bending processing on glass ingredients, the upper mold comprises a pressing plate and a contact plate, the inner wall of the pressing plate is provided with a first channel, and the inner wall of the contact plate is provided with a second channel; a second channel is arranged on the inner wall of the contact plate. The sealing structure is arranged, and the sealing structure can well adapt to the two different working states of coincidence and non-coincidence of the first channel and the second channel. In the non-overlapping state, airflow guiding and chipping blocking are achieved through stretching; in the overlapped state, the self-cleaning function can be achieved through elastic deformation recovery. Due to the adaptability to different working states, the upper die can keep stable performance in the whole machining process, faults and problems possibly occurring due to the change of the working states are reduced, and the universality and reliability of the upper die are improved.

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 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.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: The present invention provides a glass forming mold suitable for local bending processing of special glass, comprising: An upper mold, a lower mold is arranged below the upper mold, the upper mold and the lower mold are matched as a set to perform bending processing on glass batch, the upper mold includes a pressing plate and a contact plate, the inner wall of the pressing plate is provided with a channel 1, the inner wall of the contact plate is provided with a channel 2, when the equipment performs bending processing, the channel 1 and the channel 2 do not overlap, the flow channel formed by the channel 1 and the channel 2 is curved, increasing the difficulty of overflow of thermoplastic state glass, after the equipment completes the bending processing, the channel 1 and the channel 2 overlap, the flow channel formed by the channel 1 and the channel 2 is vertical, reducing the difficulty of adhering glass fragments; A drive system, wherein the drive system controls the displacement of the upper die and the lower die, provides a power source for the bending process, and controls the displacement of the pressing plate, and the pressing plate is maintained at different target positions during and after the bending process of the device; Wherein, the pressure plate also includes a sealing structure for performing sealing protection in different states on the connection between channel 1 and channel 2 in different position states.

[0007] Furthermore, the sealing structure includes a sealing layer made of elastic material, a positioning ring 1 in contact with the inner wall of channel 1 is arranged at the top of the sealing layer, a positioning ring 2 in contact with the inner wall of channel 2 is arranged at the bottom of the sealing layer, and a groove with a larger upper part and a smaller lower part is embedded in the inner wall of the sealing layer.

[0008] Furthermore, a sealing groove 2 is provided at the lower portion of the inner wall of the channel 1, the inner wall of the sealing groove 2 is snap-connected with the positioning ring 1, and a reinforcement layer 1 is provided below the sealing groove 2.

[0009] Furthermore, a sealing groove 1 is opened on the upper part of the inner wall of the second channel, a reinforcement layer 2 is arranged above the second channel, and the inner wall of the second reinforcement layer is snap-connected with the second positioning ring.

[0010] Furthermore, the upper part of the inner wall of the channel 1 adopts an arc-shaped design that is small at the top and large at the bottom, and a shallow groove 1 is opened on the inner wall of the channel 1. The shallow groove 1 adopts an inclined design that is large at the top and small at the bottom, and the top of the groove fits with the bottom of the shallow groove 1.

[0011] Furthermore, a shallow groove 2 is provided on the inner wall of the second channel. The shallow groove 2 is designed to be larger at the top and smaller at the bottom. The bottom of the groove fits with the top of the shallow groove 2.

[0012] Furthermore, a reinforcing rib net is provided on the outer wall of the groove, 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 two sides of the reinforcement layer.

[0013] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects: The present invention is provided with an upper mold, which is configured as a double layer of a pressure plate and a contact plate. Channel 1 inside the pressure plate and channel 2 inside the contact plate are staggered when the equipment performs bending processing, and channel 1 and channel 2 are configured in multiples. At this time, the connected channel 1 and channel 2 are staggered honeycomb channels. The double-layer structure design of the upper mold, combined with the design of a shallow groove that is narrow at the top and wide at the bottom, constructs a complex "maze-like" airflow channel. When the glass approaches the channel, the narrow at the top and wide at the bottom channel entrance first forms a physical obstacle to it, limiting the entry area of ​​the glass. In addition, due to the tortuous path formed by the staggered channels, the glass needs to constantly change its flow direction. In the complex path, the high viscosity and surface tension of the glass work together to make it difficult for it to pass through the inside of the channel, greatly reducing the risk of glass infiltrating into the air outlet and causing blockage. The synergistic effect of the physical properties of the glass itself and the channel structure is utilized to reduce the possibility of the air outlet being blocked by glass from the root, thereby ensuring the long-term stable operation of the air outlet system of the upper mold during the special glass processing process.

[0014] The present invention is provided with a sealing structure, which can well adapt to the two different working states of overlap and non-overlap of channel 1 and channel 2. In the non-overlapping state, it realizes airflow guidance and debris blocking by stretching; in the overlapping state, it can realize self-cleaning function by elastic deformation recovery. This adaptability to different working states enables the upper mold to maintain stable performance throughout the entire processing process, reduces possible failures and problems caused by changes in working states, and improves the versatility and reliability of the upper mold.

[0015] The present invention is provided with a sealing layer. While guiding the airflow, 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 continue to enter the channel through the channel, so they are effectively intercepted in the device, greatly reducing the risk of the channel being blocked by debris. This blocking mechanism is based on the principle of physical size screening, which can prevent debris from damaging the air outlet at the source. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 A schematic diagram of the upper and lower mold structures of an embodiment of the present invention; Figure 3 It is a schematic cross-sectional view of the upper die structure during bending processing according to an embodiment of the present invention; Figure 4 It is a schematic cross-sectional view of the upper mold structure after the bending process is completed according to an embodiment of the present invention; Figure 5 For the embodiment of the present invention Figure 3 A magnified schematic diagram of the sealing structure at center A; Figure 6 For the embodiment of the present invention Figure 4 The enlarged schematic diagram of the sealing structure at B in the middle; Figure 7 Schematic diagram of the sealing structure of an embodiment of the present invention.

[0018] The numbers in the figure represent: 1. upper mold; 11. pressure 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. groove; 1932. reinforcing rib mesh; 2. lower mold; 3. driving system. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] The present invention will be further described below in conjunction with the embodiments.

[0021] Example:

[0022] See also Figure 1-Figure 7 The present invention provides a glass forming mold technical solution suitable for local bending processing of special glass: Figure 1 The equipment 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 as a set to bend the glass ingredients. The driving system 3 controls the displacement of the upper mold 1 and the lower mold 2 to provide a power source for the bending process.

[0023] refer to Figure 2 , Figure 3 and Figure 4The upper mold 1 includes a pressing plate 11 and a contact plate 12. The inner wall of the pressing plate 11 is provided with a channel 13, and the inner wall of the contact plate 12 is provided with a channel 2 15. The flow channel formed by the channel 13 and the channel 2 15 exists as an air outlet of the device; the driving system 3 controls the displacement of the pressing plate 11. When the device is bending and after the bending, the pressing plate 11 is maintained at different target positions. When the device is bending, the channel 1 13 and the channel 2 15 do not overlap, and the flow channel formed by the channel 1 13 and the channel 2 15 is bent. After the bending of the device is completed, the channel 1 13 and the channel 2 15 overlap, and the flow channel formed by the channel 1 13 and the channel 2 15 is vertical; The upper mold 1 is configured as a double layer of a pressing plate 11 and a contact plate 12. The channel 1 13 inside the pressing plate 11 and the channel 2 15 inside the contact plate 12 are staggered when the equipment is bending, and the channel 1 13 and the channel 2 15 are configured in multiples. At this time, the connected channel 1 13 and the channel 2 15 are staggered channels, and the design of the shallow groove 1 131 being narrow at the top and wide at the bottom constructs a complex "maze-like" airflow channel; When the glass approaches the channel, the shallow groove 151, which is narrow at the bottom and wide at the top, first forms a physical barrier to it, limiting the entry area of ​​the thermoplastic glass. The narrow at the top and wide at the bottom channel exerts pressure to hinder its movement. In addition, the tortuous path formed by the staggered channels requires the glass to constantly change its flow direction. In the complex path, the high viscosity and surface tension of the glass work together to make it difficult to pass through the channel, greatly reducing the risk of glass infiltrating the vent and causing blockage. The synergistic effect of the physical properties of the glass itself and the channel structure is utilized to reduce the possibility of the vent being blocked by glass from the root, ensuring the long-term stable operation of the vent system of the upper mold 1 during the special glass processing process.

[0024] During the hot pressing process, when the airflow passes through the staggered honeycomb channels, a specific airflow field is formed. The staggered distribution of the channels causes the airflow to produce a complex flow pattern when passing through. Under the action of the airflow, the glass is more inclined to flow in 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 airflow flows out from the staggered channels, forming a layer of airflow barrier between the glass and the channels, effectively preventing direct contact between the glass and the channels, thereby reducing the risk of glass infiltration.

[0025] During the local bending process of special glass, excessive air pressure fluctuations will cause bubbles to form on the glass surface, affecting the transparency and optical properties of the glass. It may also cause the glass to fit poorly with the upper mold 1 and the lower mold 2, resulting in inaccurate bending shape of the glass. When the gas of the present invention is discharged, it will preferentially choose a path with less resistance through the staggered channels. This airflow distribution method can effectively reduce local air pressure fluctuations. The asymmetric flow channel formed by the staggered holes and grooves optimizes the airflow discharge path, maintains a stable air pressure environment, ensures that the glass is bent under a uniform pressure field, and improves the processing quality and yield rate of special glass.

[0026] The outer layer structure of the double-layer structure of the pressing plate 11 can play a certain role in heat insulation, reduce the loss of heat from the inside of the pressing plate 11 to the outside, and help 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. The uniform temperature distribution can make the glass evenly heated in the pressing plate 11, avoiding local overheating or overcooling that causes uneven bending of the glass or cracks; at the same time, the honeycomb pore structure increases the surface area of ​​the pressing plate 11 to a certain extent, which is beneficial 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.

[0027] refer to Figure 3 , Figure 4 , Figure 5 and Figure 6 The upper part of the inner wall of channel 13 adopts an arc design with a small top and a large bottom. The inner wall of channel 13 is provided with a shallow groove 131, and the shallow groove 131 adopts an inclined design with a large top and a small bottom. The inner wall of channel 2 15 is provided with a shallow groove 2 151, and the shallow groove 2 151 adopts an inclined design with a large top and a small bottom.

[0028] When the upper mold 1 and the lower mold 2 are in a non-working state, the pressing plate 11 moves under the control of the driving system 3, so that the channel 1 13 of the pressing plate 11 and the channel 2 15 of the contact plate 12 overlap to form a complete channel. At this time, the air is ejected in the opposite direction from the top of the channel, and the shallow groove structure of the inner wall of the channel, which is wide at the top and narrow at the bottom, composed of the shallow groove 1 131 and the shallow groove 2 151, plays a key role. According to the principles of fluid mechanics, when the airflow passes through a channel that is wide at the top and narrow at the bottom, the airflow velocity will increase significantly due to the gradual decrease in the cross-sectional area. The high-speed airflow generates local turbulence and strong shear force in the channel, which can effectively act on the deposits on the hole wall. For the condensed glass debris, volatiles and other deposits accumulated on the hole wall after long-term use, the shear force generated by the high-speed airflow can peel them off the hole wall, so that they are discharged from the channel with the airflow, and the inner walls of the channel 1 13 and the channel 2 15 are efficiently cleaned, and the channel is kept unobstructed, so as to prepare for the next processing.

[0029] By effectively preventing glass from penetrating into the channels and having its own clearing ability, the pressing plate 11 and the contact plate 12 can maintain good working conditions, reducing the need for frequent cleaning or replacement of the pressing plate 11 due to blockage of channel 1 13 and channel 2 15. This not only reduces production costs, but also extends the overall service life of the pressing plate 11. In addition, the stable air pressure environment and uniform temperature field help reduce the concentration of thermal and mechanical stresses on the pressing plate 11 during use, reduce the risk of deformation, cracking and other damage to the pressing plate 11, and further improve the reliability and durability of the pressing plate 11.

[0030] refer to Figure 5 , Figure 6 and Figure 7 The pressure plate 11 also includes a sealing structure 19 for sealing and protecting the connection between the channel 13 and the channel 2 15 in different positions in different states. The sealing structure 19 includes a sealing layer 193 made of elastic material. The top of the sealing layer 193 is provided with a positioning ring 191 in contact with the inner wall of the channel 13. The bottom of the sealing layer 193 is provided with a positioning ring 192 in contact with the inner wall of the channel 2 15. A sealing groove 17 is provided at the lower part of the inner wall of the channel 13. The inner wall of the sealing groove 17 is engaged with the positioning ring 191. A reinforcement layer 14 is provided below the sealing groove 17. A sealing groove 17 is provided at the upper part of the inner wall of the channel 2 15. 16. A reinforcement layer 2 18 is arranged above the channel 2 15, and the inner wall of the reinforcement layer 2 18 is engaged with the positioning ring 2 192. The outer surface of the sealing structure 19 is parallel to the inner wall of the complete channel formed when the channel 1 13 and the channel 2 15 overlap. A groove 1931 with a larger upper part and a smaller lower part is embedded in the inner wall of the sealing layer 193. The upper part of the groove 1931 is in contact with the bottom end of the shallow groove 131, and the lower part of the groove 1931 is in contact with the top end of the shallow groove 2 151. Due to the engagement design of the sealing layer 193 with the sealing groove 2 17 and the sealing groove 1 16, the channel 1 13 and the channel 2 15 can maintain a good seal under different working conditions.

[0031] When channel 13 and channel 2 15 do not overlap, the elastic sealing layer 193 in the sealing structure 19 is in a stretched state, and the upper and lower outer walls of the sealing layer 193 are fixed to the reinforcement layer 14 and the reinforcement layer 2 18 respectively. The stretching of the sealing layer 193 is only in the middle of the sealing layer 193, and the two ends of the sealing layer 193 still maintain the size matching the shallow groove 131 and the shallow groove 2 151. The sealing layer 193 is stretched to form a stepped contraction flow channel, and the cross-sectional area of ​​the part close to the shallow groove 2 151 is reduced. The inclined stretched sealing layer 193 blocks the upper surface of the channel 2 15 to a certain extent, thereby utilizing the inertia. The separation effect intercepts debris with smaller particle size, thereby improving the interception efficiency; at the same time, the size of the groove 1931 of the elastic sealing layer 193 is simultaneously reduced, and the particles are further captured through the screening effect, thereby improving the interception rate; the inclination angle of the groove 1931 on the surface of the sealing layer 193 in the stretched state guides the airflow to flow along the preset path, thereby realizing low-resistance airflow guidance, avoiding the turbulence and irregular diffusion of the airflow in the channel, allowing the airflow to pass through the channel more orderly, thereby improving the efficiency of gas discharge, and the positioning ring 191 and the positioning ring 2 192 can prevent gas and debris from leaking from the gaps during this process; While guiding the airflow, 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 filtering mechanism. For fine debris, due to the size limitation of the channel 1931, they cannot continue to enter the channel through the channel 1931, and are effectively intercepted in the device, greatly reducing the risk of the channel being blocked by debris. This blocking mechanism is based on the principle of physical size screening and can prevent debris from damaging the air outlet at the source.

[0032] When channel 1 13 and channel 2 15 overlap, the elastic deformation of the elastic sealing layer 193 is restored. In this process, the debris originally attached to the surface of the sealing layer 193 and the groove 1931 will be loosened due to the shape change of the sealing layer 193. This is because the elastic material will produce tiny vibrations and displacements during the deformation recovery process, which weakens 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 is loosened, these loose debris can be easily cleaned out from the surface of the sealing layer 193 and the groove 1931 through blowing operation; this self-cleaning function enables the upper mold 1 to regularly clean the sealing structure 19 during long-term use to maintain its good working condition, reduce the frequency and difficulty of manual cleaning, and improve the use efficiency and reliability of the upper mold 1; the positioning ring 191, the positioning ring 2 192 and the sealing layer 193 structure ensure the overall sealing of the channel, avoid gas leakage during the blowing cleaning process, thereby ensuring the stability of the internal pressure of the upper mold 1, which is beneficial to improving the quality of local bending processing of special glass.

[0033] This adaptability to different working conditions enables the upper mold 1 to maintain stable performance throughout the entire processing process, reduces possible failures and problems due to changes in working conditions, and improves the versatility and reliability of the upper mold 1; since the sealing structure 19 can effectively prevent debris from entering channel 1 13 and channel 2 15, and has a self-cleaning function, this reduces the possibility of channel 1 13 and channel 2 15 being blocked, and reduces the damage to the upper mold 1 caused by the blockage of channel 1 13 and channel 2 15. At the same time, good sealing performance also helps to maintain a stable environment inside the upper mold 1, reducing corrosion and wear on other parts of the mold caused by gas leakage and impurities entering. Therefore, this sealing structure 19 can extend the service life of the mold to a certain extent and reduce production costs.

[0034] The positioning ring 1 191 and the positioning ring 2 192 are connected by a snap-fit ​​connection, which supports quick disassembly and replacement, reducing maintenance costs; the airflow guidance in the non-overlapping state reduces turbulent dissipation, reduces system energy consumption, and optimizes energy efficiency; multi-working condition compatibility, the groove 1931 of the elastic sealing layer 193 can adapt to different shallow groove configurations such as V-shape and U-shape, and the aperture or groove depth can be quickly adjusted by replacing the sealing structure 19.

[0035] refer to Figure 7 The outer wall of the groove 1931 is provided with a reinforcing rib net 1932, the upper part of the reinforcing rib net 1932 is fixedly connected to the side of the reinforcement layer 14, and the lower part of the reinforcing rib net 1932 is fixedly connected to the side of the reinforcement layer 2 18. The sealing layer 193 adopts a graphite composite material to compensate for the linear expansion difference caused by the temperature difference; a hard wear-resistant coating is coated on the surface of the elastic sealing layer 193 to effectively resist the friction and wear with other components during the deformation process and reduce surface damage. At the same time, the hardened coating can also limit the generation and expansion of micro cracks on the surface of the sealing ring to a certain extent, and improve its fatigue resistance. The reinforcing rib net 1932 is a constructed three-dimensional reinforcing network structure or an embedded fiber reinforced layer. When the sealing layer 193 undergoes elastic deformation, the reinforcing rib net 1932 can disperse the stress and avoid excessive stress concentration on the main material of the sealing layer 193, thereby 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 micro cracks inside the sealing layer 193, thereby extending its fatigue life. The corners of the sealing layer 193 are rounded and chamfered, and sharp right angles and acute angles are changed into rounded and chamfered corners, so that the stress transitions smoothly at these parts, the local stress peak is reduced, the stress concentration point is effectively eliminated, and the fatigue resistance of the sealing layer 193 is improved; In addition, a shape memory alloy is embedded inside the sealing layer 193 or in key positions. By heating the memory alloy to reach its phase change 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 restore its shape, reducing the accumulation of plastic deformation, achieving self-recovery of the sealing layer 193, and increasing the service life of the sealing structure 19.

[0036] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, 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 suitable for local bending processing of special glass, characterized in that: include: An upper mold (1), a lower mold (2) is arranged below the upper mold (1), the upper mold (1) and the lower mold (2) are matched as a set to perform bending processing on glass materials, the upper mold (1) comprises a pressing plate (11) and a contact plate (12), the inner wall of the pressing plate (11) is provided with a channel 1 (13), and the inner wall of the contact plate (12) is provided with a channel 2 (15), when the device performs bending processing, the channel 1 (13) and the channel 2 (15) do not overlap, the flow channel formed by the channel 1 (13) and the channel 2 (15) is curved, and the difficulty of thermoplastic state glass overflowing is increased, and after the device completes the bending processing, the channel 1 (13) and the channel 2 (15) overlap, and the flow channel formed by the channel 1 (13) and the channel 2 (15) is vertical, and the difficulty of glass debris adhering is reduced; A drive system (3), wherein the drive system (3) controls the displacement of the upper die (1) and the lower die (2) to provide a power source for the bending process, and the drive system (3) controls the displacement of the pressing plate (11), and the pressing plate (11) is maintained at different target positions during and after the bending process of the device; The pressure plate (11) further comprises a sealing structure (19) for performing sealing protection in different states on the connection between the channel 1 (13) and the channel 2 (15) in different position states.

2. A glass forming mold suitable for local bending processing of special glass according to claim 1, characterized in that: The sealing structure (19) comprises a sealing layer (193) made of elastic material, a first positioning ring (191) in contact with the inner wall of the first channel (13) being arranged at the top of the sealing layer (193), a second positioning ring (192) in contact with the inner wall of the second channel (15) being arranged at the bottom of the sealing layer (193), and a groove (1931) in a larger upper part and smaller lower part being embedded in the inner wall of the sealing layer (193).

3. The glass forming mold suitable for local bending processing of special glass according to claim 2, characterized in that: A sealing groove 2 (17) is provided at the lower part of the inner wall of the channel 1 (13), the inner wall of the sealing groove 2 (17) is snap-fitted and connected to the positioning ring 1 (191), and a reinforcement layer 1 (14) is provided below the sealing groove 2 (17).

4. The glass forming mold suitable for local bending processing of special glass according to claim 2, characterized in that: A sealing groove 1 (16) is provided on the upper portion of the inner wall of the second channel (15), and a reinforcement layer 2 (18) is provided above the second channel (15). The inner wall of the reinforcement layer 2 (18) is snap-fitted and connected to the second positioning ring (192).

5. The glass forming mold suitable for local bending processing of special glass according to claim 2, characterized in that: The upper portion of the inner wall of the channel 1 (13) is designed in an arc shape with a small top and a large bottom. The inner wall of the channel 1 (13) is provided with a shallow groove 1 (131). The shallow groove 1 (131) is designed in an inclined shape with a large top and a small bottom. The upper portion of the groove (1931) fits with the bottom of the shallow groove 1 (131).

6. The glass forming mold suitable for local bending processing of special glass according to claim 4, characterized in that: A second shallow groove (151) is provided on the inner wall of the second channel (15). The second shallow groove (151) is designed to be larger at the top and smaller at the bottom. The bottom of the channel (1931) fits the top of the second shallow groove (151).

7. The glass forming mold suitable for local bending of special glass according to claim 4, characterized in that: The outer wall of the groove (1931) is provided with a reinforcing rib net (1932), the upper part of the reinforcing rib net (1932) is fixedly connected to the side of the reinforcement layer one (14), and the lower part of the reinforcing rib net (1932) is fixedly connected to the side of the reinforcement layer two (18).

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