Frame bending device for television production

Abstract

The application relates to the field of bending equipment, in particular to a frame bending device for television production, which comprises a double-layer workbench and further comprises: a base, a moving mechanism is installed on the base, a sheet metal bending device is arranged at the working end of the moving mechanism; a stress release device, a plurality of groups of rolling balls are rotatably installed on the front surface of the stress release device; a secondary stress release mechanism, the secondary stress release mechanism comprises two third hydraulic push rods which are symmetrically fixedly connected to the lower end surface of the upper layer of the double-layer workbench on the other side, and a secondary stress release device is arranged at the output ends of the two third hydraulic push rods. Through the arrangement of the above structure, the sheet metal part after bending can be subjected to stress release twice, so that the rebound phenomenon of the sheet metal part after bending can be effectively avoided, and the quality of the sheet metal part after bending is fully guaranteed.

Description

Technical Field

[0001] This invention relates to the field of bending equipment, and more particularly to a frame bending device for television production. Background Technology

[0002] Existing television frames are often made of metal, and their production process requires the use of bending devices to bend the unformed sheet metal parts so that they can be processed further.

[0003] In existing technologies, bending machines are often used when bending television frames. However, during the bending process of sheet metal parts, it is important to pay attention to the springback stress of the sheet metal parts. Existing sheet metal bending often uses one-time bending forming. After bending, when the bent part is removed, the sheet metal parts spring back to a certain extent, causing a certain deviation from the ideal bending arc. As a result, the bent sheet metal parts cannot meet the usage requirements. At the same time, there is no effective device in the existing technology that can fully eliminate the stress after bending the sheet metal parts. In order to solve this problem, this application proposes a frame bending device for television production that can fully eliminate this stress. Summary of the Invention

[0004] The purpose of this invention is to solve the problem in the prior art that it is difficult to fully eliminate the stress generated during the bending process of sheet metal parts, and to propose a frame bending device for television production.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a frame bending device for television production, comprising a double-layer worktable, and further comprising: The conveying mechanism includes a conveying guide rail fixedly installed at the middle position of the front side of the top of the double-layer workbench. A sheet metal conveying slider is slidably connected on the conveying guide rail. A suction and fixing part is provided on one side of the upper end of the sheet metal conveying slider, and a driving part is provided on the other side of the upper end of the sheet metal conveying slider. The positioning mechanism includes a sheet metal positioner located at the middle of the rear end of the lower layer of the double-layer workbench. The top of the sheet metal positioner is fixedly connected to the inner top wall of the double-layer workbench. A second hydraulic pump is fixedly installed on one side surface of the rear end of the lower layer of the double-layer workbench. The working end of the second hydraulic pump is connected to the hydraulic unit built into the sheet metal positioner through a hose. The base is located behind the double-layer workbench. A moving mechanism is installed on the base. A sheet metal bending device is installed at the working end of the moving mechanism. A lifting mechanism is installed at the upper end of the sheet metal bending device. Two mounting seats are provided at the working end of the lifting mechanism. A motor is fixedly installed on one of the mounting seats. After the output end of the motor rotates through the mounting seat, a bending roller is connected to it. The end of the bending roller away from the motor is rotatably connected to the other mounting seat. The bending roller includes a roller body. Multiple roller grooves are opened around the outer perimeter of the roller body. Rollers are rotatably installed inside the roller grooves. A linkage hydraulic pump is fixedly installed on the rear surface of the top of the double-layer worktable. Two symmetrically arranged second hydraulic push rods are fixedly connected to one side of the upper and lower surfaces of the double-layer worktable. The working end of the linkage hydraulic pump is connected to the hydraulic part of the second hydraulic push rods through a hose. The output ends of the two second hydraulic push rods are fixedly connected to a stress relief device. Multiple sets of ball bearings are rotatably installed on the front surface of the stress relief device, and a sliding cavity is opened in the side wall of the stress relief device. A sliding plate is slidably connected inside the sliding cavity. Multiple sets of impact pins are fixedly connected at the middle position of the surface of the sliding plate. After sliding through the side wall of the stress relief device, the multiple sets of impact pins extend to the outside of the stress relief device. A spring-loaded part is provided on the surface of the sliding plate. A secondary stress relief mechanism includes two third hydraulic push rods symmetrically fixedly connected to the other side of the lower surface of the upper layer of the double-layer workbench. The working end of the linkage hydraulic pump is connected to the hydraulic part of the third hydraulic push rod through a hose. The output ends of the two third hydraulic push rods are jointly provided with a secondary stress relief device. A pushing mechanism is disposed on the rear end surface of the lower layer of the double-layer workbench.

[0006] Preferably, the suction and fixing part includes an electric cylinder fixedly installed on the upper surface of the sheet metal transport slider. After the output end of the electric cylinder slides through the sheet metal transport slider, a suction cup is fixedly connected. The lower surface of the suction cup is provided with multiple suction nozzles. A blow-suction pump is fixedly installed on the front surface of the top of the double-layer workbench. The working end of the blow-suction pump is connected to multiple hoses. The ends of the multiple hoses away from the blow-suction pump are all connected to the corresponding suction nozzles.

[0007] Preferably, the driving unit includes a gear drive motor fixedly mounted on the upper surface of the sheet metal transport slider. The output end of the gear drive motor is keyed to a gear after rotating through the sheet metal transport slider. A rack is fixedly connected to one side of the transport guide rail, and the gear meshes with the rack.

[0008] Preferably, the moving mechanism includes a lead screw motor fixedly installed on the rear surface of the base. The output end of the lead screw motor is keyed to a lead screw after rotating through the side wall of the base. The lead screw is threadedly connected to the lower end of the sheet metal bending device. Multiple sets of guide wheels are fixedly installed on both the left and right sides of the lower end of the sheet metal bending device. Guide rails are fixedly connected to both the left and right sides of the inner bottom wall of the base. The guide wheels are clamped on both sides of the guide rails and slidably connected to the guide rails.

[0009] Preferably, the lifting mechanism includes a first hydraulic pump fixedly connected to the middle position of the upper end of the sheet metal bending device, and first hydraulic push rods are fixedly connected to both sides of the upper surface of the sheet metal bending device. The output end of the first hydraulic push rod is fixedly connected to the lower end of the mounting base. The left and right working ends of the first hydraulic pump are connected to the hydraulic parts built into the left and right first hydraulic push rods one by one through hoses.

[0010] Preferably, a sponge is bonded to the inner rear wall of the stress relief device, and the sponge stores lubricating oil inside.

[0011] Preferably, the rebound part includes multiple sets of springs fixedly connected to the upper and lower sides of the sliding plate surface, and the ends of the multiple sets of springs away from the sliding plate are fixedly connected to the inner wall of the stress relief device.

[0012] Preferably, the secondary stress relief device includes an upper mold fixedly connected to the output end of a third hydraulic push rod, and a lower mold fixedly connected to the other side surface of the lower rear end of the double-layer workbench is provided directly below the upper mold. The upper mold and the lower mold together form a stress relief groove.

[0013] Preferably, the pushing mechanism includes a cylinder, a push-stroke air pump, and a return-stroke air pump, which are fixedly installed on one side of the rear end of the lower layer of the double-layer workbench. The working end of the push-stroke air pump is connected to one end of the cylinder through a hose, and the working end of the return-stroke air pump is connected to the other end of the cylinder through a hose.

[0014] Preferably, the working end of the cylinder faces the stress relief groove and is located on the same axis as the stress relief groove.

[0015] Compared with existing technologies, the advantages of this invention are: In this application, by setting up a conveying mechanism, when the gear drive motor is running, it can drive the gear to rotate. When the gear rotates, it can move back and forth along the rack, thereby driving the sheet metal conveying slider to move back and forth along the conveying guide rail. During the movement of the sheet metal conveying slider, it can drive the sheet metal parts that are picked up and fixed below to move synchronously, thereby facilitating the transportation of the sheet metal parts to be processed.

[0016] In this application, by setting up a moving mechanism and a lifting mechanism, on the one hand, when the lead screw motor is running, it can drive the lead screw to rotate. When the lead screw rotates, it can drive the sheet metal bending device to move back and forth above the base, thereby driving the first hydraulic push rod, motor and bending roller at the upper end of the sheet metal bending device to move back and forth, which facilitates the adjustment of the horizontal position of the bending roller. On the other hand, when the first hydraulic push rod is running, it can adjust the vertical height of the bending roller, which facilitates the subsequent bending operation.

[0017] 3. In this application, by setting up a sheet metal bending device and a stress relief device, when the motor is running, it can drive the bending roller to rotate, causing the rollers on the bending roller to hit the striker, which in turn hits the bent sheet metal part. After hitting the sheet metal part, the striker resets due to the elastic force of the spring. The reset striker is then hit by the next row of rollers. This process is repeated a certain number of times to complete the first stress relief of the bent sheet metal part.

[0018] 4. In this application, by setting up a secondary stress release device, after the sheet metal part is bent and undergoes the first stress release, the push-stroke air pump starts to work, pushing the working end in the cylinder to push the sheet metal part into the secondary stress release device. With the cooperation of the linkage hydraulic pump, upper mold and lower mold, the sheet metal part can undergo a second stress release.

[0019] In summary, this application, through the above-described structural design, can release stress on the bent sheet metal parts twice, thereby effectively preventing springback after bending and fully ensuring the quality of the sheet metal parts after bending. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a frame bending device for television production proposed in this invention.

[0021] Figure 2 This is a schematic diagram of the moving mechanism of a frame bending device for television production proposed in this invention.

[0022] Figure 3 This is a schematic diagram of the lifting mechanism of a frame bending device for television production proposed in this invention.

[0023] Figure 4 This is a schematic diagram of the conveying mechanism of a frame bending device for television production proposed in this invention.

[0024] Figure 5 This is a partial cross-sectional view of a stress relief device for a frame bending apparatus used in television production, as proposed in this invention.

[0025] Figure 6This is a schematic diagram of the stress relief device structure of a frame bending device for television production proposed in this invention.

[0026] Figure 7 This is a schematic diagram of the secondary stress relief device of a frame bending device for television production proposed in this invention.

[0027] Figure 8 This is a schematic diagram of the sheet metal locator structure of a frame bending device for television production proposed in this invention.

[0028] Figure 9 This is a schematic diagram of the bending roller structure of a frame bending device for television production proposed in this invention.

[0029] In the diagram: 1. Lead screw motor; 2. Base; 3. Lead screw; 4. Sheet metal bending device; 401. First hydraulic pump; 402. First hydraulic push rod; 403. Guide rail; 404. Motor; 405. Bending roller; 405. Roller; 405. Roller body; 405. Roller groove; 406. Guide wheel; 5. Cylinder; 6. Push stroke air pump; 7. Second stroke air pump; 8. Return stroke air pump; 9. Suction cup; 10. Blowing and suction air pump; 11. Electric cylinder; 12. Rack; 13. Gear; 14. Conveying guide rail; 15. Gear drive motor; 16. Sheet metal conveying slider; 17. Linkage hydraulic pump; 18. Secondary stress release device; 1801. Upper mold; 1802. Lower mold; 19. Stress release device; 1901. Impact pin; 1902. Sponge; 1903. Spring; 1904. Ball bearing; 20. Sheet metal positioner. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0031] Reference Figure 1 and Figure 4 A frame bending device for television production includes a double-layer worktable. A transport guide rail 14 is fixedly installed at the middle position of the front side of the top of the double-layer worktable. A sheet metal transport slider 16 is slidably connected to the transport guide rail 14. A rack 12 is welded and fixed to one side of the transport guide rail 14. A gear drive motor 15 is bolted to one side of the upper end of the sheet metal transport slider 16. The output end of the gear drive motor 15 is keyed to a gear 13 after rotating through the sheet metal transport slider 16. The gear 13 meshes with the rack 12. When the gear drive motor 15 is running, it can drive the gear 13 to rotate. When the gear 13 rotates, it can move back and forth along the rack 12, thereby driving the sheet metal transport slider 16 to move back and forth along the transport guide rail 14.

[0032] An electric cylinder 11 is bolted to the other side of the upper end of the sheet metal transport slider 16. After the output end of the electric cylinder 11 slides through the sheet metal transport slider 16, a suction cup 9 is welded to it. The suction cup 9 is used to pick up and fix the sheet metal parts. Multiple suction nozzles are provided on the lower surface of the suction cup 9. A blow-suction pump 10 is bolted to the front surface of the top of the double-layer workbench. The working end of the blow-suction pump 10 is connected to multiple rubber hoses. The ends of the multiple hoses away from the blow-suction pump 10 are connected to the corresponding suction nozzles. By sucking or blowing air through the blow-suction pump 10, the sheet metal parts can be picked up and fixed or released from fixation.

[0033] Reference Figure 1 and Figure 8 A second hydraulic pump 7 is bolted to one side of the lower rear end of the double-layer workbench. A sheet metal locator 20 is located in the middle of the lower rear end of the double-layer workbench. The top of the sheet metal locator 20 is bolted to the inner top wall of the double-layer workbench. The working end of the second hydraulic pump 7 is connected to the hydraulic unit inside the sheet metal locator 20 through a rubber hose. When the second hydraulic pump 7 is running, it can deliver or draw hydraulic oil into the sheet metal locator 20, thereby controlling the working end of the sheet metal locator 20 to descend or rise, which is convenient for positioning or releasing the sheet metal parts.

[0034] Reference Figures 1 to 3 as well as Figure 9 The double-layer workbench has a base 2 at its rear end, which can be placed on the ground or other workbench. A lead screw motor 1 is fixedly installed on the rear surface of the base 2 by bolts. The output end of the lead screw motor 1 is connected to a lead screw 3 after rotating through the side wall of the base 2. A sheet metal bending device 4 is threadedly connected to the outside of the lead screw 3. Multiple sets of guide wheels 406 are fixedly installed on the left and right sides of the lower end of the sheet metal bending device 4 by bolts. Guide rails 403 are welded and fixed on the left and right sides of the inner bottom wall of the base 2. The guide wheels 406 are clamped on both sides of the guide rails 403 and are slidably connected to the guide rails 403. A first hydraulic pump 401 is welded and fixed at the middle position of the upper end of the sheet metal bending device 4, and first hydraulic push rods 402 are welded and fixed on both sides of the upper surface of the sheet metal bending device 4. The output end of the first hydraulic push rod 402 is welded and fixed to a mounting base. A motor 404 is fixedly mounted on one of the mounting bases by bolts. After the output end of the motor 404 rotates through the mounting base, a bending roller 405 is keyed to it. The end of the bending roller 405 away from the motor 404 is rotatably connected to the other mounting base through a bearing. The bending roller 405 includes a roller body 40502. Multiple roller grooves 40503 are opened around the outer perimeter of the roller body 40502. Rollers 40501 are rotatably mounted inside the roller grooves 40503. The left and right working ends of the first hydraulic pump 401 are connected to the hydraulic parts built into the left and right first hydraulic push rods 402 one by one through rubber hoses.

[0035] When the lead screw motor 1 is running, it can drive the lead screw 3 to rotate. When the lead screw 3 rotates, it can drive the sheet metal bending device 4 to move back and forth above the base 2, thereby driving the first hydraulic push rod 402, motor 404 and bending roller 405 at the upper end of the sheet metal bending device 4 to move back and forth, so as to facilitate the adjustment of the position of the bending roller 405 and facilitate subsequent bending operations.

[0036] Reference Figure 1 , Figure 5 , Figure 6 as well as Figure 9 A linkage hydraulic pump 17 is welded and fixed to the rear surface of the top of the double-layer workbench. Two symmetrically arranged second hydraulic push rods are welded and fixed to one side of the upper and lower surfaces of the double-layer workbench. The output ends of the two second hydraulic push rods are welded and fixed to a stress relief device 19. The working end of the linkage hydraulic pump 17 is connected to the hydraulic part of the second hydraulic push rods through a rubber hose. Multiple sets of ball bearings 1904 are rotatably mounted on the front surface of the stress relief device 19. A sponge 1902 is glued to the inner rear wall of the stress relief device 19. The sponge 1902 stores lubricant. The stress relief device 19 is equipped with a lubricating oil, and a sliding cavity is provided in the side wall of the stress relief device 19. A sliding plate is slidably connected inside the sliding cavity. Multiple sets of impact pins 1901 are welded and fixed at the middle position of the side surface of the sliding plate near the sponge 1902. After sliding through the side wall of the stress relief device 19 and the sponge 1902, the multiple sets of impact pins 1901 extend to the outside of the stress relief device 19. Multiple sets of springs 1903 are welded and fixed on the upper and lower sides of the side surface of the sliding plate near the sponge 1902. The ends of the multiple sets of springs 1903 away from the sliding plate are all welded and fixed to the inner wall of the stress relief device 19.

[0037] When the linkage hydraulic pump 17 pushes the hydraulic oil to push the stress relief device 19 down, the ball 1904 can be tangent to the surface of the bent sheet metal. At this time, the sheet metal bending device 4 feeds, so that the roller 40501 on the bending roller 405 is tangent to the arc surface inside the stress relief device 19. At this time, the motor 404 drives the bending roller 405 to rotate, so that the roller 40501 on the bending roller 405 hits the striker 1901, so that the striker 1901 hits the bent sheet metal. After hitting the sheet metal, the striker 1901 is reset due to the elasticity of the spring 1903. After being reset, the striker 1901 is hit by the next row of rollers 40501. This process is repeated a certain number of times to complete the first stress relief of the bent sheet metal.

[0038] Reference Figure 1 as well as Figure 7On one side of the lower rear end of the double-layer workbench, a cylinder 5, a push-stroke air pump 6, and a return-stroke air pump 8 are fixedly installed in sequence. The working end of the cylinder 5 faces the sheet metal positioner 20 and is set parallel to the sheet metal positioner 20. The working end of the push-stroke air pump 6 is connected to one end of the cylinder 5 through a rubber hose, and the working end of the return-stroke air pump 8 is connected to the other end of the cylinder 5 through a rubber hose.

[0039] Two symmetrically arranged third hydraulic push rods are welded and fixed on the other side of the upper and lower surfaces of the double-layer worktable. The working end of the linkage hydraulic pump 17 is connected to the hydraulic part of the third hydraulic push rod through a rubber hose. The output ends of the two third hydraulic push rods are welded and fixed to the upper mold 1801. The lower mold 1802 is welded and fixed to the other side of the rear end of the lower layer of the double-layer worktable directly below the upper mold 1801. The upper mold 1801 and the lower mold 1802 together form a stress relief groove. The stress relief groove and the working end of the cylinder 5 are located on the same axis.

[0040] After the sheet metal part is bent and the first stress is released, the push-stroke air pump 6 starts to work, pushing the working end in the cylinder 5 to push the sheet metal part into the secondary stress release device 18 to complete the secondary stress release. After the pushing action is completed, the return air pump 8 pushes the push rod in the cylinder 5 to perform the return motion.

[0041] The specific working principle of this invention is as follows: First, the worker places the sheet metal part under the suction cup 9. The suction cup 9 is connected to the air pump 10 via a hose. At this time, the electric cylinder 11 starts to operate, pushing the suction cup 9 downward. When the suction cup 9 comes into contact with the sheet metal part, the air pump 10 starts to suck air, creating a vacuum between the suction cup 9 and the sheet metal part, thus holding the sheet metal part in place. Figure 4As shown, at this time, the electric cylinder 11 drives the suction cup 9 to move upward a certain distance. After the movement is completed, the gear drive motor 15 starts to run, driving the gear 13 to mesh with the rack 12 and move linearly along the transport guide rail 14, moving the sheet metal part below the sheet metal locator 20. At this time, the electric cylinder 11 drives the suction cup 9 to descend, and the air pump 10 blows it up, causing the sheet metal part to detach from the suction cup. At this time, the second hydraulic pump 7 is pushed to push hydraulic oil, causing the sheet metal locator 20 to press on the sheet metal part and provide clamping force, clamping the sheet metal part. Then, the lead screw motor 1 and the first hydraulic pump 401 start working simultaneously. The lead screw motor 1 drives the lead screw 3 to rotate, causing the sheet metal bending device 4 to move along the guide rail 403. The first hydraulic pump 401 pushes the first hydraulic push rod 402 to rise. The motor 404 drives the bending roller 405 to rotate. The roller 40501 on the bending roller 405 collides with the sheet metal part, producing a bending effect on the sheet metal part. Different bending angles of the sheet metal part can be obtained through the precise operation of the lead screw motor 1 and the operation of the first hydraulic pump 401. After the sheet metal part is bent, due to the internal stress after bending, the sheet metal part will spring back. At this time, the sheet metal bending device 4 retracts, and the linkage hydraulic pump 17 pushes hydraulic oil to push the stress relief device 19 down, so that the ball 1904 is tangent to the bent sheet metal part surface. At this time, the sheet metal bending device 4 feeds, so that the roller 40501 on the bending roller 405 is tangent to the inner arc surface of the stress relief device 19. At this time, the motor 404 drives the bending roller 405 to rotate, so that the roller 40501 on the bending roller 405 is tangent to the inner arc surface of the stress relief device 19. The impact pin 1901 strikes the bent sheet metal part again. After impacting the sheet metal part, the impact pin 1901 returns to its original position due to the elasticity of the spring 1903. The returned impact pin is then struck by the next row of rollers 40501. This process is repeated a certain number of times to complete the first stress release of the bent sheet metal part. During the process of the bending roller 405 rotating and striking the impact pin 1901, the sponge 1902 on the stress release device 19, which absorbs lubricating oil, repeatedly lubricates and cleans the bending roller 405. After the first stress release of the bent sheet metal part is completed, the push-stroke air pump 6 starts to work, pushing the working end in the cylinder 5 to push the bent sheet metal part with the first stress release into the secondary stress release device 18. After the pushing action is completed, the return air pump 8 pushes the push rod in the cylinder 5 to perform the return motion. At this point, the stress relief device 19 rises under the action of the linkage hydraulic pump 17. Since the amount of hydraulic oil in the linkage hydraulic pump 17 is fixed, the upper mold 1801 descends, pressing the sheet metal part between the upper mold 1801 and the lower mold 1802. The downward pressure provided by the hydraulic oil performs a second stress relief on the sheet metal part. After the stress relief is completed, the linkage hydraulic pump 17 causes the upper mold 1801 to rise, and the worker can remove the sheet metal part that has undergone two stress reliefs. Since the amount of hydraulic oil in the linkage hydraulic pump 17 is constant, the stress relief device 19 descends to perform stress relief on the next sheet metal part. The sheet metal bending process is thus completed.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A frame bending device for television production, comprising a double-layer worktable, characterized in that, It also includes: The conveying mechanism includes a conveying guide rail (14) fixedly installed at the middle position of the front side of the top of the double-layer workbench. A sheet metal conveying slider (16) is slidably connected on the conveying guide rail (14). A suction fixing part is provided on one side of the upper end of the sheet metal conveying slider (16), and a driving part is provided on the other side of the upper end of the sheet metal conveying slider (16). The positioning mechanism includes a sheet metal locator (20) located at the middle position of the rear end of the lower layer of the double-layer workbench. The top of the sheet metal locator (20) is fixedly connected to the inner top wall of the double-layer workbench. A second hydraulic pump (7) is fixedly installed on one side surface of the rear end of the lower layer of the double-layer workbench. The working end of the second hydraulic pump (7) is connected to the hydraulic part built into the sheet metal locator (20) through a hose. The base (2) is located behind the double-layer workbench. A moving mechanism is installed on the base (2). A sheet metal bending device (4) is installed at the working end of the moving mechanism. A lifting mechanism is installed at the upper end of the sheet metal bending device (4). Two mounting seats are provided at the working end of the lifting mechanism. A motor (404) is fixedly installed on one of the mounting seats. A bending roller (405) is connected to the output end of the motor (404) after it rotates through the mounting seat. The end of the bending roller (405) away from the motor (404) is rotatably connected to the other mounting seat. The bending roller (405) includes a roller body (40502). Multiple roller grooves (40503) are opened around the outer perimeter of the roller body (40502). Rollers (40501) are rotatably installed inside the roller grooves (40503). A linkage hydraulic pump (17) is fixedly installed on the rear surface of the top of the double-layer workbench. Two symmetrically arranged second hydraulic push rods are fixedly connected to one side of the upper and lower surfaces of the double-layer workbench. The working end of the linkage hydraulic pump (17) is connected to the hydraulic part of the second hydraulic push rod through a hose. The output ends of the two second hydraulic push rods are fixedly connected to a stress relief device (19). Multiple sets of ball bearings (1904) are rotatably installed on the front surface of the stress relief device (19). A sliding cavity is opened in the side wall of the stress relief device (19). A sliding plate is slidably connected inside the sliding cavity. Multiple sets of impact pins (1901) are fixedly connected at the middle position of the surface of the sliding plate. After sliding through the side wall of the stress relief device (19), the multiple sets of impact pins (1901) extend to the outside of the stress relief device (19). A spring-loaded part is provided on the surface of the sliding plate. The secondary stress relief mechanism includes two third hydraulic push rods that are symmetrically fixedly connected to the other side of the lower surface of the upper layer of the double-layer workbench. The working end of the linkage hydraulic pump (17) is connected to the hydraulic part of the third hydraulic push rod through a hose. The output ends of the two third hydraulic push rods are jointly provided with a secondary stress relief device (18). A pushing mechanism is disposed on the rear end surface of the lower layer of the double-layer workbench.

2. The frame bending device for television production according to claim 1, characterized in that, The suction and fixing part includes an electric cylinder (11) fixedly installed on the upper surface of the sheet metal transport slider (16). The output end of the electric cylinder (11) is fixedly connected to a suction cup (9) after sliding through the sheet metal transport slider (16). The lower surface of the suction cup (9) is provided with multiple suction nozzles. A blow-suction pump (10) is fixedly installed on the front surface of the top of the double-layer workbench. The working end of the blow-suction pump (10) is connected to multiple hoses. The ends of the multiple hoses away from the blow-suction pump (10) are all connected to the corresponding suction nozzles.

3. The frame bending device for television production according to claim 1, characterized in that, The drive unit includes a gear drive motor (15) fixedly installed on the upper surface of the sheet metal transport slider (16). The output end of the gear drive motor (15) is keyed to a gear (13) after rotating through the sheet metal transport slider (16). A rack (12) is fixedly connected to one side of the transport guide rail (14). The gear (13) meshes with the rack (12).

4. The frame bending device for television production according to claim 1, characterized in that, The moving mechanism includes a lead screw motor (1) fixedly installed on the rear surface of the base (2). The output end of the lead screw motor (1) is keyed to a lead screw (3) after rotating through the side wall of the base (2). The lead screw (3) is threadedly connected to the lower end of the sheet metal bending device (4). Multiple sets of guide wheels (406) are fixedly installed on the left and right sides of the lower end of the sheet metal bending device (4). Guide rails (403) are fixedly connected to the left and right sides of the inner bottom wall of the base (2). The guide wheels (406) are clamped on both sides of the guide rails (403) and slidably connected to the guide rails (403).

5. The frame bending device for television production according to claim 1, characterized in that, The lifting mechanism includes a first hydraulic pump (401) fixedly connected to the middle position of the upper end of the sheet metal bending device (4), and a first hydraulic push rod (402) is fixedly connected to both sides of the upper surface of the sheet metal bending device (4). The output end of the first hydraulic push rod (402) is fixedly connected to the lower end of the mounting base. The left and right working ends of the first hydraulic pump (401) are connected to the hydraulic parts built into the left and right first hydraulic push rods (402) one by one through hoses.

6. The frame bending device for television production according to claim 1, characterized in that, The stress relief device (19) has a sponge (1902) glued to the inner wall of the rear side, and the sponge (1902) stores lubricating oil inside.

7. A frame bending device for television production according to claim 1, characterized in that, The rebound section includes multiple sets of springs (1903) fixedly connected to the upper and lower sides of the sliding plate surface. The ends of the multiple sets of springs (1903) away from the sliding plate are all fixedly connected to the inner wall of the stress relief device (19).

8. A frame bending device for television production according to claim 1, characterized in that, The secondary stress relief device (18) includes an upper mold (1801) fixedly connected to the output end of the third hydraulic push rod. A lower mold (1802) is fixedly connected to the other side surface of the lower rear end of the double-layer workbench directly below the upper mold (1801). The upper mold (1801) and the lower mold (1802) together form a stress relief groove.

9. A frame bending device for television production according to claim 8, characterized in that, The pushing mechanism includes a cylinder (5), a push stroke air pump (6), and a return stroke air pump (8) fixedly installed on one side of the rear end of the lower layer of the double-layer workbench. The working end of the push stroke air pump (6) is connected to one end of the cylinder (5) through a hose, and the working end of the return stroke air pump (8) is connected to the other end of the cylinder (5) through a hose.

10. A frame bending device for television production according to claim 9, characterized in that, The working end of the cylinder (5) faces the stress relief groove and is located on the same axis as the stress relief groove.

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