Sheet tempering heat treatment equipment

Abstract

The utility model relates to the technical field of sheet processing, and particularly discloses sheet tempering heat treatment equipment which comprises a hot air box, an inlet and an outlet are formed in the left side and the right side of the hot air box, feeding and discharging devices are arranged in the inlet and the outlet, a rotating support is arranged between the two feeding and discharging devices and comprises a bottom frame and a top frame, and a plurality of sets of positioning rollers are arranged on the inner side of the bottom frame and the inner side of the top frame. A bracket is arranged at the bottom of the bottom frame and fixedly connected with the bottom frame, an adjusting mechanism used for pushing the top frame to ascend and descend is arranged on the top of the bracket, and a guide rod limiting structure is arranged between the bottom frame and the top frame. The feeding and discharging device conveys the formed sheet plate to the rotating support in the hot air box, the rotating support is controlled to turn over, hot air convection in the box is accelerated, heat conduction dead corners and temperature difference caused by single-face heating are eliminated in the turning-over process of the rotating support, double-face alternate heating of the workpiece sheet plate is achieved, the tempering effect is improved, and the finished product quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of sheet processing technology, and in particular to a sheet tempering heat treatment device. Background Technology

[0002] Tempering of plastic sheets is a process to improve the properties of plastics. It usually involves heating the plastic sheet to a certain temperature and holding it for a period of time, then slowly cooling it. Proper tempering can change the crystallinity of the plastic, improve the regularity of the molecular chains and the crystal morphology, thereby increasing the toughness and ductility of the plastic sheet and making it less prone to breakage when subjected to external forces.

[0003] For example, the patent application CN202322783857.2 discloses a tempering and leveling device for transparent PET sheets, which includes a worktable. A pre-leveling device, a conveyor plate, a heating plate, and a leveling device are fixedly installed on the top of the worktable. An electrostatic removal device is provided directly above the conveyor plate, and the bracket of the electrostatic removal device is fixedly connected to both sides of the worktable. An installation groove is provided inside the worktable, and an orifice-shaped bracket is slidably installed in the installation groove. A housing is fixedly installed on one side of the orifice-shaped bracket. An electric fan is installed inside the housing, and an air outlet is provided at the connection between the output end of the electric fan and the housing. A filter screen is installed inside the housing. A pipe groove is provided inside the upper connecting rod of the orifice-shaped bracket. An air inlet device is fixedly installed on one side of the pipe groove, and a conveying pipe is fixedly installed inside the pipe groove.

[0004] During the tempering process of plastic sheets, due to the fixed position of the heating source, there will be a temperature difference between different sides of the sheet. The temperature of the heated side rises, the molecular movement intensifies, and the material expands, while the other side maintains a relatively low temperature and expands less. This uneven expansion will cause stress to be generated inside the plastic sheet, resulting in deformation such as bending and twisting of the sheet, which needs to be optimized. Utility Model Content

[0005] To address the aforementioned problems, this utility model proposes a sheet tempering heat treatment device to overcome the shortcomings of existing methods.

[0006] To achieve the purpose of this utility model, the utility model is achieved through the following technical solution: a sheet tempering heat treatment equipment, including a hot air box, with inlets and outlets on the left and right sides of the hot air box, and feeding and discharging devices in the inlets and outlets, and a rotating bracket between the two feeding and discharging devices, the rotating bracket being rotatably arranged inside the hot air box.

[0007] The rotating support includes a bottom frame and a top frame. Multiple sets of positioning rollers are provided inside the bottom frame and the top frame. A bracket is provided at the bottom of the bottom frame and is fixedly connected to the bottom frame. An adjustment mechanism for pushing the top frame up and down is provided at the top of the bracket. A guide rod limiting structure is provided between the bottom frame and the top frame.

[0008] The hot air box is equipped with an exhaust fan and a hot air inlet. The hot air inlet is fixedly located on the left and right sides of the hot air box, and the exhaust fan is fixedly located on the top of the hot air box.

[0009] A further improvement is made in that: a rotating device is provided on the outside of the hot air box, the rotating device including a rotating shaft, a worm gear, an outer box, a worm, and a second motor. The outer box is fixedly installed on the outside of the hot air box, the rotating shaft is rotatably installed on the inside of the outer box, one end of the rotating shaft is fixedly connected to the bracket, the worm gear is fixedly installed on the outside of the rotating shaft, the worm is rotatably installed on the inside of the outer box and meshes with the worm gear, the second motor is fixedly installed on the outside of the outer box, and the output end of the second motor is fixedly connected to the worm.

[0010] A further improvement is that the outer side of the positioning roller is provided with several dot-shaped protrusions.

[0011] A further improvement is that the adjustment mechanism includes a screw, a first motor, and a nut seat. The nut seat is fixedly installed on the outside of the top frame, the screw is rotatably installed on the inside of the bracket, the first motor is fixedly installed on the upper end of the bracket, the output end of the first motor is fixedly connected to the screw, and the nut seat is sleeved on the outside of the screw and threadedly connected to the screw.

[0012] A further improvement is that the guide rod limiting structure includes multiple first fixing blocks and multiple second fixing blocks. The first fixing blocks are fixedly installed on the outside of the bottom frame, and the second fixing blocks are fixedly installed on the outside of the top frame. A limiting rod is fixedly installed at the upper end of the first fixing block, and the limiting rod passes through the second fixing block. The second fixing block and the limiting rod are slidably connected.

[0013] A further improvement is that the feeding and discharging device includes a support frame, which is fixedly installed on the left and right sides of the hot air box. A conveyor belt is laid on the top of the support frame, with one end of the conveyor belt extending outside the hot air box and the other end of the conveyor belt passing through the inlet and outlet and extending to one side of the rotating support frame.

[0014] A further improvement is that several curtain slats are provided on the inner side of the inlet and outlet.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] The feeding and discharging device transports the formed sheet to the rotating bracket inside the hot air box. By controlling the rotation of the rotating bracket, the convection of hot air inside the box is accelerated. The rotation of the rotating bracket eliminates the dead corners of heat conduction and the temperature difference caused by heating on one side only, so as to realize the alternating heating of the two sides of the workpiece sheet, improve the tempering effect, and improve the quality of the finished product. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a structural diagram of the hot air box in this utility model.

[0019] Figure 2 This is a structural diagram of the bottom frame in this utility model.

[0020] Figure 3 This is a structural diagram of the top frame in this utility model.

[0021] Figure 4 This is a structural diagram of the outer casing in this utility model.

[0022] The components are as follows: 1. Hot air box; 2. Conveyor belt; 3. Inlet and outlet; 4. Support frame; 5. Ventilation fan; 6. Shutter; 7. Hot air inlet; 8. Bottom frame; 9. Top frame; 10. First fixing block; 11. Limiting rod; 12. Second fixing block; 13. Positioning roller; 14. Bracket; 15. Screw; 16. First motor; 17. Nut seat; 18. Rotating shaft; 19. Worm gear; 20. Outer casing; 21. Worm; 22. Second motor. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] according to Figure 1 , 2 As shown in Figures 3 and 4, this embodiment proposes a sheet tempering heat treatment equipment, including a hot air box 1, with inlet and outlet 3 on the left and right sides of the hot air box 1, and feeding and discharging devices inside the inlet and outlet 3, and a rotating bracket between the two feeding and discharging devices, the rotating bracket being rotatably arranged inside the hot air box 1.

[0025] The rotating bracket includes a bottom frame 8 and a top frame 9. Multiple sets of positioning rollers 13 are provided inside the bottom frame 8 and the top frame 9. A bracket 14 is provided at the bottom of the bottom frame 8. The bracket 14 is fixedly connected to the bottom frame 8. An adjustment mechanism for pushing the top frame 9 up and down is provided at the top of the bracket 14. A guide rod limiting structure is provided between the bottom frame 8 and the top frame 9.

[0026] The hot air box 1 is equipped with an air exchange fan 5 and a hot air inlet 7 on the inside. The hot air inlet 7 is fixedly installed on the left and right sides of the hot air box 1, and the air exchange fan 5 is fixedly installed on the top of the hot air box 1.

[0027] The feeding and discharging device conveys the formed sheet to the rotating bracket inside the hot air box 1. When passing between the bottom frame 8 and the top frame 9, the adjusting mechanism pushes the top frame 9 down. The top frame 9, together with the bottom frame 8, fixes the sheet between the upper and lower rows of positioning rollers 13. By controlling the rotation of the rotating bracket, the convection of hot air inside the box is accelerated. The rotation action eliminates the dead angle of heat conduction and the temperature difference caused by single-sided heating, so as to realize the double-sided alternating heating of the workpiece sheet, improve the tempering effect, and improve the quality of the finished product.

[0028] More specifically, a rotating device is provided on the outside of the hot air box 1. The rotating device includes a rotating shaft 18, a worm gear 19, an outer casing 20, a worm 21, and a second motor 22. The outer casing 20 is fixedly installed on the outside of the hot air box 1. The rotating shaft 18 is rotatably installed inside the outer casing 20. One end of the rotating shaft 18 is fixedly connected to the bracket 14. The worm gear 19 is fixedly installed on the outside of the rotating shaft 18. The worm 21 is rotatably installed inside the outer casing 20 and meshes with the worm gear 19. The second motor 22 is fixedly installed on the outside of the outer casing 20. The output end of the second motor 22 is fixedly connected to the worm 21.

[0029] The second motor 22 controls the worm gear 21 to rotate. As the worm gear 21 rotates, it meshes with the worm wheel 19, causing the worm wheel 19 to rotate. Since the worm wheel 19 is fixed to the rotating shaft 18 and the rotating shaft 18 is fixed to the bracket 14, when the worm wheel 19 rotates, the entire rotating bracket will also rotate.

[0030] Worm gear transmission has self-locking properties. When the worm 21 stops rotating, the shaft 18 will not rotate due to the meshing of the threads between the worm 21 and the shaft 18, thus improving safety.

[0031] It is worth explaining in detail that the outer side of the positioning roller 13 is provided with several dot-shaped protrusions. By providing dot-shaped protrusions on the outer side of the positioning roller 13, the friction between the positioning roller 13 and the plate is increased, so that the plate will not slip off between the two sets of positioning rollers 13 during the flipping process of the bottom frame 8 and the top frame 9.

[0032] Regarding regulatory mechanisms:

[0033] The adjustment mechanism includes a screw 15, a first motor 16, and a nut seat 17. The nut seat 17 is fixedly installed on the outside of the top frame 9. The screw 15 is rotatably installed on the inside of the bracket 14. The first motor 16 is fixedly installed on the upper end of the bracket 14. The output end of the first motor 16 is fixedly connected to the screw 15. The nut seat 17 is sleeved on the outside of the screw 15 and threadedly connected to the screw 15.

[0034] The first motor 16 controls the screw 15 to rotate. During the rotation of the screw 15, it cooperates with the nut seat 17, causing the nut seat 17 to move along the body of the screw 15, thereby adjusting the setting height of the top frame 9 to ensure that the plate can be tightly attached to the upper and lower positioning rollers 13.

[0035] More specifically, the guide rod limiting structure includes multiple first fixing blocks 10 and multiple second fixing blocks 12. The first fixing blocks 10 are fixedly installed on the outside of the bottom frame 8, and the second fixing blocks 12 are fixedly installed on the outside of the top frame 9. A limiting rod 11 is fixedly installed at the upper end of the first fixing blocks 10, and the limiting rod 11 passes through the second fixing blocks 12. The second fixing blocks 12 are slidably connected to the limiting rod 11. When adjusting the height of the top frame 9, the second fixing blocks 12 fixed on the outside of the top frame 9 will also slide synchronously along the rod body of the limiting rod 11. The limiting rod 11, in cooperation with the second fixing blocks 12, limits the top frame 9 from the side, improving the stability of the top frame 9 during lifting and lowering.

[0036] The feeding and discharging device includes a support frame 4, which is fixedly installed on the left and right sides of the hot air box 1. A conveyor belt 2 is laid on the top of the support frame 4. One end of the conveyor belt 2 extends outside the hot air box 1, and the other end passes through the inlet and outlet 3 and extends to one side of the rotating support. The conveyor belt 2 transports the formed sheet to the bottom frame 8 inside the hot air box 1. The bottom frame 8 supports the sheet through positioning rollers 13. A motor for driving the positioning rollers 13 is installed on the top frame 9. The motor controls the rotation of the two positioning rollers 13 to send the sheet out towards the inlet and outlet 3 on the other side. The device installed in the hot air box 1 should be properly insulated.

[0037] To prevent excessive heat loss, several slats 6 are installed on the inner side of the inlet / outlet 3. The slats 6 can improve the sealing of the hot air box 1 and save energy without affecting the entry and exit of the sheet metal.

[0038] How this application works:

[0039] The feeding and discharging device conveys the formed sheet to the rotating bracket inside the hot air box 1. When passing between the bottom frame 8 and the top frame 9, the first motor 16 controls the screw 15 to rotate. During the rotation of the screw 15, it engages with the nut seat 17, causing the nut seat 17 to move along the screw 15, thereby adjusting the setting height of the top frame 9 to ensure that the sheet can be tightly attached to the upper and lower sets of positioning rollers 13. The top frame 9, together with the bottom frame 8, fixes the sheet between the upper and lower rows of positioning rollers 13. The second motor 22 controls the worm gear 21 to rotate. During the rotation of the worm gear 21, it meshes with the worm wheel 19, causing the worm wheel 19 to rotate. The worm wheel 19 is fixed to the rotating shaft 18, and the rotating shaft 18 is fixed to the bracket 14. When the worm wheel 19 rotates, the entire rotating bracket will also rotate. By controlling the rotation of the rotating bracket, it is ensured that the sheet between the bottom frame 8 and the top frame 9 can fully contact the hot air flow, improving the tempering effect and enhancing the quality of the finished product.

[0040] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0041] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A sheet tempering heat treatment device, comprising a hot air box (1), wherein the hot air box (1) is provided with inlet and outlet (3) on its left and right sides, and the inlet and outlet (3) are provided with feeding and discharging devices, characterized in that, A rotating bracket is provided between the two feeding and discharging devices, and the rotating bracket is rotatably arranged inside the hot air box (1); The rotating support includes a bottom frame (8) and a top frame (9). Multiple sets of positioning rollers (13) are provided on the inner side of the bottom frame (8) and the top frame (9). A bracket (14) is provided at the bottom of the bottom frame (8). The bracket (14) is fixedly connected to the bottom frame (8). An adjustment mechanism for pushing the top frame (9) up and down is provided at the top of the bracket (14). A guide rod limiting structure is provided between the bottom frame (8) and the top frame (9). The hot air box (1) is provided with a ventilation fan (5) and a hot air inlet (7) on the inside. The hot air inlet (7) is fixedly installed on the left and right sides of the hot air box (1), and the ventilation fan (5) is fixedly installed on the top of the hot air box (1).

2. The sheet tempering heat treatment equipment according to claim 1, characterized in that: The hot air box (1) is provided with a rotating device on the outside. The rotating device includes a rotating shaft (18), a worm gear (19), an outer box (20), a worm (21), and a second motor (22). The outer box (20) is fixedly installed on the outside of the hot air box (1). The rotating shaft (18) is rotatably installed on the inside of the outer box (20). One end of the rotating shaft (18) is fixedly connected to the bracket (14). The worm gear (19) is fixedly installed on the outside of the rotating shaft (18). The worm (21) is rotatably installed on the inside of the outer box (20) and meshes with the worm gear (19). The second motor (22) is fixedly installed on the outside of the outer box (20). The output end of the second motor (22) is fixedly connected to the worm (21).

3. The sheet tempering heat treatment equipment according to claim 1, characterized in that: The positioning roller (13) has several dot-shaped protrusions on its outer side.

4. The sheet tempering heat treatment equipment according to claim 1, characterized in that: The adjustment mechanism includes a screw (15), a first motor (16), and a nut seat (17). The nut seat (17) is fixedly disposed on the outside of the top frame (9). The screw (15) is rotatably disposed on the inside of the bracket (14). The first motor (16) is fixedly disposed on the upper end of the bracket (14). The output end of the first motor (16) is fixedly connected to the screw (15). The nut seat (17) is sleeved on the outside of the screw (15) and threadedly connected to the screw (15).

5. The sheet tempering heat treatment equipment according to claim 1, characterized in that: The guide rod limiting structure includes multiple first fixing blocks (10) and multiple second fixing blocks (12). The first fixing blocks (10) are fixedly disposed on the outside of the bottom frame (8), and the second fixing blocks (12) are fixedly disposed on the outside of the top frame (9). A limiting rod (11) is fixedly disposed on the upper end of the first fixing block (10). The limiting rod (11) passes through the second fixing block (12), and the second fixing block (12) is slidably connected to the limiting rod (11).

6. The sheet tempering heat treatment equipment according to claim 1, characterized in that: The feeding and discharging device includes a support (4), which is fixedly installed on the left and right sides of the hot air box (1). A conveyor belt (2) is laid on the top of the support (4). One end of the conveyor belt (2) extends to the outside of the hot air box (1), and the other end of the conveyor belt (2) passes through the inlet and outlet (3) and extends to one side of the rotating support.

7. The sheet tempering heat treatment equipment according to claim 1, characterized in that: The inlet and outlet (3) are provided with several curtain slats (6).

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