Forming assembly of hot bending machine

Abstract

A forming assembly of a hot bending machine comprises an upper forming assembly and a lower forming assembly, the upper forming assembly comprises a fixing support, the fixing support is provided with a front portion and a rear portion, one or more pressurizing assemblies are arranged on the front portion of the fixing support, and one or more pressurizing assemblies are arranged on the rear portion of the fixing support; the pressurizing assembly comprises a driving device, the driving device is provided with an output shaft, the output shaft is provided with a connecting block, and the bottom of the connecting block is connected with a forming upper heating plate; the lower forming assembly comprises a forming lower heating plate, and a mold needing hot bending operation is located between the forming upper heating plate and the forming lower heating plate. And the multiple sets of pressurizing assemblies push the forming upper heating plate to apply pressure to the mold, and the pressure applied to all the positions of the mold can be adjusted conveniently.

Description

Technical Field

[0001] This utility model relates to the field of glass processing technology, specifically to a forming component of a hot bending machine. Background Technology

[0002] With the continuous innovation of modern architectural design, the requirements for the shape and performance of glass are becoming increasingly stringent. In electronic devices such as smartphones, tablets, and smartwatches, the application of hot-bent glass products such as 3D cover glass and curved screens is becoming more and more widespread. These glass products require high-precision hot bending processes to ensure their appearance quality, touch performance, and durability, thereby promoting the continuous improvement of glass hot bending machines in terms of precision control, forming speed, and production efficiency.

[0003] Patent application CN115557680A discloses a fully automatic glass hot bending forming machine, including a base on which a feeding mechanism, a preheating and forming slow cooling chamber, and a cooling section are arranged in sequence. The preheating and forming slow cooling chamber includes a main furnace cavity, within which a preheating section, a forming section, and a slow cooling section are arranged in sequence. The forming section includes two or more forming units arranged in sequence, through which the glass is bent. In this device, the workpiece and mold are fed into the preheating and forming slow cooling chamber for forming and cooling, and then cooled to room temperature by the cooling section. The structural design of the second shift fork mold moving mechanism can reduce the size of the machine and reduce the cost of machine manufacturing. The use of a separated shift fork structure ensures that each unit does not affect the others, facilitating precise temperature control.

[0004] The forming unit has a cylinder at the top that pushes a heating plate through a lifting rod to apply pressure to the mold and form the workpiece. However, due to tolerances, the pressure applied by the cylinder cannot be exactly at the center of the mold. Moreover, during forming, the heating plate and the mold are at high temperatures, which greatly reduces the force transmission. Therefore, the following situation may occur: the force on the end of the mold in the length direction will be less than the force on the end in the width direction. As a result, the workpiece will be subjected to uneven force when bending, failing to reach the preset size, and cannot be adjusted. Summary of the Invention

[0005] The present invention aims to solve the technical problem of substandard workpiece dimensions and high defect rate caused by the inability to adjust the force applied to various parts of the workpiece by the mold when the workpiece is heated and bent.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows: a forming component of a hot bending machine, comprising an upper forming component and a lower forming component. The upper forming component includes a fixed bracket, which has a front part and a rear part. One or more pressure components are provided at the front part of the fixed bracket and at the rear part of the fixed bracket. The pressure components include a driving device and a connecting shaft. The output shaft of the driving device is connected to the connecting shaft, and a connecting block is provided on the output shaft. The bottom of the connecting block is connected to an upper forming heating plate. The lower forming component includes a lower forming heating plate, and the mold to be hot bent is located between the upper forming heating plate and the lower forming heating plate.

[0007] In this design, pressure components are installed at both the front and rear of the fixed bracket. The pressure components are connected to the upper heating plate of the forming process. By using multiple sets of pressure components to push the upper heating plate of the forming process to apply pressure to the mold, if it is found that the bending dimension of a certain part of the workpiece does not reach the preset dimension, the pressure of the pressure component at the corresponding position can be adjusted until the workpiece dimension meets the design requirements. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0009] Figure 2 This is a front view of an embodiment of the present utility model;

[0010] Figure 3 for Figure 2 Sectional view of plane AA;

[0011] Figure 4 for Figure 3 Enlarged view of section B in the middle. Detailed Implementation

[0012] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0013] like Figures 1 to 4 As shown, a forming component of a hot bending machine is mounted on the frame of the hot bending machine. The forming component includes an upper forming component 1 and a lower forming component 2. The upper forming component 1 includes a fixed bracket 11, which has a front part, a middle part and a rear part.

[0014] Two sets of pressurizing components 12 are provided at the front, middle and rear of the fixed bracket 11. Each pressurizing component 12 includes a driving device 121 and a connecting shaft 122. The output shaft of the driving device 121 is connected to the connecting shaft 122. The driving device 121 can be a cylinder or a linear motor. In this embodiment, the driving device 121 is a cylinder. A connecting block 123 is provided at the bottom of the connecting shaft 122, and a forming upper heating plate 13 is provided at the bottom of the connecting block 123. The pressurizing components 12 at the front, middle and rear are arranged at equal intervals, and multiple connecting blocks 123 are evenly distributed and connected to the upper side of the forming upper heating plate 13. The lower forming component 2 includes a forming lower heating plate 21, and the mold that needs to be hot-bent is located between the forming upper heating plate 13 and the forming lower heating plate 21.

[0015] Two sets of pressure components 12 are set at the front, middle and rear, which can apply different pressures to different parts of the mold. During the hot bending process, the pressure required at different positions of the workpiece may vary due to factors such as shape, thickness or temperature. Alternatively, if it is found that the bending size of a certain part of the workpiece does not reach the preset size, the pressure of the pressure component at the corresponding position can be adjusted according to actual needs. The pressure of each area can be independently controlled by the drive device 121 until the workpiece size reaches the design requirements.

[0016] like Figure 2 and Figure 3 As shown, in this embodiment, the fixed bracket 11 includes a drive fixed plate 111 and a fixed base plate 112. The cylinder is fixed on the drive fixed plate 111. A through hole 110 is provided on the fixed base plate 112. A linear bearing 14 is provided in the through hole 110. The connecting shaft 122 passes through the linear bearing 14 and is connected to the connecting block 123. A forming plate 113 is provided on both sides between the drive fixed plate 111 and the fixed base plate 112. The upper and lower ends of the forming plate 113 are respectively connected to the drive fixed plate 111 and the forming fixed base plate 112.

[0017] The linear bearing 14 provides precise linear guidance for the movement of the connecting shaft 122, ensuring that the connecting shaft 122 moves strictly along a straight line when the cylinder's output shaft extends or retracts. The upper heating plate 13 needs to be pressed down precisely, and the linear bearing 14 ensures accurate matching between the upper heating plate 13 and the lower mold. If the movement trajectory deviates, it will cause uneven stress on the hot-bent workpiece, affecting the product quality. The forming upright plate 113 acts as a supporting frame, greatly enhancing the overall structural stability of the fixed bracket 11. When the hot bending machine is working, the force generated by the cylinder's movement and various forces during the hot bending process can be evenly distributed through the forming upright plate 113, avoiding deformation of the fixed bracket 11 due to excessive local stress, thereby ensuring the reliable operation of the entire forming assembly and extending the service life of the equipment.

[0018] In this embodiment, an upper heating through hole 131 is provided on the upper heating plate 13, and an upper electric heating tube 132 is inserted through the upper heating through hole 131 to heat the upper heating plate 13; two or more molding blocks 133 are connected below the upper heating plate 13; a lower heating through hole 211 is provided on the lower heating plate 21, and a lower electric heating tube 212 is inserted through the lower heating through hole 211 to heat the lower heating plate 21; the upper heating plate 13 has an upper heating through hole 131 and... The upper heating element 132 allows it to contact the heating plate from all directions. When energized, heat is rapidly and evenly distributed to the entire upper heating plate 13 through heat conduction, ensuring uniform heating of all areas on the upper surface of the workpiece. This avoids problems such as inconsistent deformation and cracking during hot bending due to local temperature differences, thus improving product quality and yield. Similarly, the design of the lower heating through hole 211 and the lower heating element 212 in the lower heating plate 21 enables uniform heating of the lower surface and simultaneous uniform heating of the upper and lower surfaces, greatly shortening the overall heating time of the workpiece and improving hot bending efficiency.

[0019] In this embodiment, a lower forming plate 22 is provided on the upper side of the lower forming heating plate 21, and the mold is placed on the lower forming plate 22. A lower insulation plate 23 is provided below the lower forming heating plate 21, which can effectively block the downward transfer of heat and reduce the heat loss to the bottom of the equipment and the surrounding environment. Side insulation plates 24 are provided on both the front and rear sides of the lower forming heating plate 21 to further prevent heat loss from the sides. This not only improves energy utilization efficiency and reduces energy consumption costs in the hot bending process, but also allows the heat of the lower forming heating plate 21 to be applied more concentratedly to the mold and the workpiece, which helps to maintain a stable hot bending temperature environment and improve product quality stability. L-shaped baffles 25 are connected to the side insulation plates 24 on both the front and rear sides. The upper side of the baffles 25 is located above the lower forming plate 22. The upper side of the baffles 25 holds the front and rear sides of the mold to prevent the mold from shifting position.

[0020] like Figure 3 and Figure 4 As shown, a support column 27 is provided below the lower heating plate 21. A stepped hole is provided inside the support column 27, and a fixing rod 26 is also provided inside the support column 27. The lower end of the fixing rod 26 is threaded. Insertion holes 232 for tightening the fixing rod 26 are radially provided on the support column 27 and the fixing rod 26. The support column 27 is fixed to the frame of the hot bending machine via the fixing rod 26. By inserting a tool such as an Allen wrench into the insertion hole and rotating the support column 27 and the fixing rod 26, the fixing rod 26 can be tightened, thus securing the support column 27.

[0021] A fixing through hole 230 corresponding to the fixing rod 26 is provided on the lower heating plate 21. A locking bolt 231 is provided in the fixing through hole 230 to lock the lower heating plate 21 onto the support column 27. The diameter of the fixing through hole 230 is larger than the outer diameter of the locking bolt 231. If it is necessary to make a fine adjustment to the horizontal position of the lower heating plate 21, the lower heating plate 21 can be moved by loosening the locking bolt 231. This setting can effectively improve the installation efficiency and debugging convenience of the equipment.

[0022] like Figure 3 As shown in this embodiment, the portion of the connecting shaft 122 located between the drive fixing plate 111 and the fixing base plate 112 is provided with a cooling water passage 1221. The connecting shaft 122 is provided with a water inlet 1222 and a water outlet 1223, which are located at both ends of the cooling water passage 1221, respectively. The presence of the cooling water passage 1221 can reduce the heat transfer from the connecting shaft 122 to the drive fixing plate 111, avoid heat accumulation inside the equipment, prevent local overheating from affecting the performance and lifespan of the drive device 121, ensure the working efficiency and accuracy of the drive device 121, and improve the stability and reliability of the entire equipment.

[0023] The above design connects multiple sets of pressure components 12 to the upper heating plate 13 of the forming process. The multiple sets of pressure components 12 apply pressure to the upper heating plate 13 of the forming process to achieve hot bending of the workpiece. The operator can adjust the pressure applied by each set of pressure components 12 according to the actual situation to achieve precise hot bending of the workpiece and improve the yield.

Claims

1. A forming assembly of a hot bending machine, comprising an upper forming assembly (1) and a lower forming assembly (2), characterized in that: The upper forming assembly (1) comprises a fixed support (11) having a front part and a rear part, a plurality of pressing assemblies (12) are arranged on the front part of the fixed support (11), and a plurality of pressing assemblies (12) are arranged on the rear part of the fixed support (11); The pressing assembly (12) comprises a driving device (121) and a connecting shaft (122), the output shaft of the driving device (121) is connected with the connecting shaft (122), the connecting shaft (122) is provided with a connecting block (123), and the bottom of the connecting block (123) is connected with a forming upper heating plate (13); The lower forming assembly (2) comprises a forming lower heating plate (21), and a mold requiring heat bending operation is arranged between the forming upper heating plate (13) and the forming lower heating plate (21).

2. Forming assembly of a hot bending machine according to claim 1, characterized in that: A plurality of pressing assemblies (12) are arranged on the middle part of the fixed support (11), and the pressing assemblies (12) on the middle part are also connected with the forming upper heating plate (13).

3. A forming assembly for a hot bender as claimed in claim 2, characterised in that: The pressing assemblies (12) arranged on the front part, the middle part and the rear part of the fixed support (11) are all two groups, and the pressing assemblies (12) arranged on the front part, the middle part and the rear part are equidistantly arranged.

4. The forming assembly of a hot bender as defined in claim 1, wherein: The fixed support (11) comprises a driving fixed plate (111) and a fixed bottom plate (112), and forming vertical plates (113) are arranged on both sides between the driving fixed plate (111) and the fixed bottom plate (112), and the upper and lower ends of the forming vertical plates (113) are connected with the driving fixed plate (111) and the fixed bottom plate (112) respectively.

5. A forming assembly for a hot bender as claimed in claim 4, characterised in that: A through hole (110) is formed in the fixed bottom plate (112), a linear bearing (14) is arranged in the through hole (110), and the connecting shaft (122) passes through the linear bearing (14) and is connected with the connecting block (123).

6. The forming assembly of a hot bender as defined in claim 1, wherein: An upper heating through hole (131) is formed in the forming upper heating plate (13), an upper electric heating tube (132) is arranged in the upper heating through hole (131), the forming upper heating plate (13) is heated by the upper electric heating tube (132), and two or more forming pressing blocks (133) are connected below the forming upper heating plate (13).

7. The forming assembly of a hot bender as defined in claim 1 wherein: A forming lower plate (22) is arranged on the upper side of the forming lower heating plate (21), and a mold is placed on the forming lower plate (22); a lower heat preservation plate (23) is arranged below the forming lower heating plate (21), side heat preservation plates (24) are arranged on the front and rear sides of the forming lower heating plate (21), L-shaped baffle plates (25) are connected on the front and rear side heat preservation plates (24), and the upper sides of the baffle plates (25) are located above the forming lower plate (22).

8. A forming assembly for a heated bending machine according to claim 7, characterised in that: A lower heating through hole (211) is formed in the forming lower heating plate (21), a lower electric heating tube (212) is arranged in the lower heating through hole (211), and the forming lower heating plate (21) is heated by the lower electric heating tube (212).

9. A forming assembly for a heated bending machine according to claim 8, characterised in that: Support columns (27) are arranged below the forming lower heating plate (21), and the support columns (27) are fixed on the rack of the heat bending machine through the fixed rods (26) arranged in the interiors; The lower forming heating plate (21) is provided with a fixing through hole (230) corresponding to the fixing rod (26), and a locking bolt (231) is arranged in the fixing through hole (230) to lock the lower forming heating plate (21) on the supporting column (27), and the diameter of the fixing through hole (230) is larger than the outer diameter of the locking bolt (231).

10. The forming assembly of a hot bender as defined in claim 4 wherein: The part of the connecting shaft (122) between the driving fixed plate (111) and the fixed bottom plate (112) is provided with a cooling water channel (1221), and a water inlet (1222) and a water outlet (1223) are arranged on the connecting shaft (122), and the water inlet (1222) and the water outlet (1223) are respectively located at two ends of the cooling water channel (1221).

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