A double bending machine for bending the size of a table top of a lifting table and a method of using the same

Abstract

The application is suitable for the technical field of bending, and provides a double-bending machine with adjustable bending size of a desktop of a lifting table and a use method thereof.The double-bending machine comprises a sliding workbench, two groups of bending assemblies slidingly connected to the top of the sliding workbench, and a positioning assembly installed in the middle of the top surface of the sliding workbench.Each of the two groups of bending assemblies comprises a box body and a swing arm rotatingly connected to the front side of the box body.A rotating rod is arranged in the box body.The swing arm is connected to the outer side wall of the corresponding rotating rod.A main pressing groove is arranged on the front side wall of the swing arm.The device solves the interference problem that may occur during the bending process of the two folding mechanisms, and solves the problem that the profile shaking during the bending of one side and the bending of the other side affects the bending shape.The device is provided with the swingable swing arm and the main pressing groove, so that the profile ends are not interfered with during the bending, and the profile is stabilized by the pressing plate after the bending, thereby reducing the secondary deformation.

Description

Technical Field

[0001] This invention relates to the field of bending technology, and more specifically, to a double bending machine with adjustable bending dimensions for a height-adjustable tabletop and its method of use. Background Technology

[0002] A height-adjustable desk, also known as a height-adjustable table, is a type of table whose height can be adjusted according to the user's needs. The bottom of the tabletop is first connected to the table frame, and then the tabletop panel is connected to the frame. The frame is bent during production. A double bending machine is generally a device that can perform two bending operations on pipes or profiles. The frame of the height-adjustable desk is bent using a double bending machine.

[0003] Currently, existing double bending machines utilize an electric hydraulic cylinder installed at the bottom of the hopper to lift and lower the material during the bending of profiles. The material moves and rolls onto the guide plate during the lifting process, and then rolls from the guide plate into the feeding assembly, thus achieving automatic feeding. Double bending is achieved through the cooperation of the bending arm assembly and the U-shaped wall. The bending arm assembly first fixes both ends of the bending tube, and then the U-shaped wall rotates, driving the fixed ends of the bending tube to bend, thereby achieving automatic double bending.

[0004] However, when bending profiles, the two folding mechanisms of the double bending machine fold at a preset angle. A conventional double bending machine can bend 90 degrees. If the profile is to bend into an octagonal shape in one go, the two folding mechanisms need to be controlled separately. Otherwise, the two folding mechanisms will interfere with each other. Moreover, after one side is bent, the other side is bent again, and the profile will wobble, which can easily affect the shape during bending. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a double bending machine with adjustable bending size of the tabletop of a height-adjustable table and its usage method.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a double bending machine for a height-adjustable tabletop bending size, comprising a sliding worktable, two sets of bending components slidably connected to the top of the sliding worktable, and a positioning component installed in the middle of the top surface of the sliding worktable.

[0007] Both sets of bending components include a housing and a swing arm rotatably connected to the front side of the housing. A rotating rod is inserted inside the housing, and the swing arm is connected to the outer side wall of the corresponding rotating rod. A main pressure groove is provided on the front side wall of the swing arm.

[0008] The positioning component includes a first pressure groove and a second pressure groove disposed on the top of the sliding worktable.

[0009] Each of the rotating rods is provided with an adjustment assembly on its outer side wall. The adjustment assembly includes a positioning tube sleeved on the outside of the rotating rod and two sets of auxiliary mechanisms disposed inside the positioning tube.

[0010] Each of the swing arms is provided with a switching component on its side wall. The switching component includes a sleeve fitted over the corresponding positioning tube. The auxiliary mechanisms are all installed through the corresponding positioning tube and the sleeve.

[0011] The invention is further configured such that the two sets of bending components also include sliding frames slidably connected to the top of the sliding worktable, the two boxes are respectively installed on the top of the two sliding frames, and a drive cylinder is installed on the opposing side of the two boxes. The piston rod of the drive cylinder extends into the interior of the corresponding box and is equipped with an electric turntable. The electric turntable is slidably connected to the inner top wall of the box, and one end of the rotating rod is inserted into and installed inside the electric turntable.

[0012] The invention is further configured such that a slider is installed at the bottom of the front sidewall of each of the two swing arms, and a lifting cylinder is installed vertically upward at the bottom of the slider, with the piston rod of the lifting cylinder connected to the corresponding main pressure groove.

[0013] By adopting the above technical solution, the positioning tube and the sleeve are two different sizes of bending dies, which realizes the diversification of functions. When using the positioning tube, the sleeve can be easily slid out from the outside of the positioning tube. At this time, the positioning tube is aligned with the main pressure groove and the first pressure groove to ensure the accuracy of operation. When switching to the use of the sleeve, the sleeve is fitted on the outside of the positioning tube and then corresponds with the main pressure groove and the first pressure groove. This adjustment enhances the functional flexibility and practicality of the entire device.

[0014] When the swing arm is in a vertical downward position, the two main pressure grooves on opposite sides are flush. When the swing arm swings to a vertical upward position, the two main pressure grooves on opposite sides become opposing sidewalls. In this state, the flush sidewalls are relatively parallel and have a certain gap. At this time, the two ends of the profile will not interfere when bent at the same time.

[0015] The present invention is further configured such that the positioning component includes a fixed seat installed in the middle of the top surface of the sliding worktable and two lead screws installed on the top of the fixed seat. The outer walls of the two lead screws are fitted with U-shaped plates, and a vertically upward clamping cylinder is installed inside the U-shaped plate. The piston rod of the clamping cylinder is connected to the second pressure groove through a connecting plate.

[0016] The present invention is further configured such that a positioning cylinder is also installed on the top of the fixed base, the piston rod of the positioning cylinder is connected to a connecting platform, the first pressing groove is installed on the top of the connecting platform, and the first pressing groove and the second pressing groove are arranged opposite to each other.

[0017] The present invention is further configured such that an anti-deviation component is installed on the top of the U-shaped plate, the anti-deviation component includes an anti-deviation frame installed on the top of the U-shaped plate, an anti-deviation motor is installed on one side of the anti-deviation frame, and the output end of the anti-deviation motor extends into the interior of the anti-deviation frame and is connected to two pressure plates.

[0018] By adopting the above technical solution, when the profile is bent, the two ends of the profile are spliced ​​together at the top of the U-shaped plate. Then, the anti-deviation motor drives the two pressure plates to swing, thereby pressing the profile on the top of the U-shaped plate. When the staff picks up the profile, the degree of secondary deformation of the profile can be reduced.

[0019] The invention is further configured such that a plurality of support rods are connected between the positioning tube and the corresponding swing arm, and a switching cylinder is installed on both sides of the swing arm, wherein the piston rod of the switching cylinder is connected to the corresponding sleeve.

[0020] The present invention is further configured such that each set of auxiliary mechanisms includes an extension bracket connected to the outer wall of the corresponding rotating rod, an auxiliary rod is slidably connected to the extension arm of the extension bracket, an auxiliary block is connected to the end of the auxiliary rod away from the corresponding extension bracket, and multiple through slots are equidistantly opened around the outer walls of the positioning tube and the sleeve, and the multiple through slots on the positioning tube and the sleeve are correspondingly arranged with the auxiliary block.

[0021] The present invention is further configured such that an auxiliary motor is installed on the side wall of the extension bracket, the output end of the auxiliary motor is connected to a driving gear, a driven gear is provided on one side of the extension bracket, the driven gear is rotatably connected to the outer side wall of the rotating rod, and a plurality of arc-shaped grooves are equidistantly arranged around the side wall of the driven gear, and a sliding column is slidably connected inside each arc-shaped groove, one end of the sliding column being connected to the corresponding auxiliary rod.

[0022] By adopting the above technical solution, when the operator selects the positioning tube or sleeve as the bending die, the auxiliary motor drives the drive gear to rotate, and the drive gear drives the driven gear to rotate, causing the arc groove to move the sliding column, which in turn drives the auxiliary rod and auxiliary block to extend, limiting the profile and enhancing adaptability. When the profile is removed, the auxiliary block retracts, and the surface of the bending die becomes smooth, making it easy to pull the profile out horizontally and reducing secondary deformation. The whole process is simple to operate and effectively improves work efficiency and processing accuracy.

[0023] A method for using a double bending machine with adjustable bending dimensions for a height-adjustable desk surface, comprising the following steps:

[0024] S1. Adjust the subsequent bending dimensions by switching the positions of the positioning tube and the sleeve.

[0025] S2. Place the profile material supporting the desktop on the top of the two main pressure grooves and the first pressure groove and fit them together. Then the main pressure groove and the first pressure groove push the profile upward until the top of the profile fits the outer wall of the bending mold of the selected size, i.e., the positioning tube or sleeve. At the same time, the second pressure groove moves downward. The first pressure groove and the second pressure groove cooperate to clamp the middle of the profile. Then the auxiliary mechanism extends out from the inside of the selected bending mold to limit the movement.

[0026] S3. Then the rotating rod drives the swing arm and the corresponding main pressure groove to rotate, causing the profile to bend along the outer wall of the positioning tube or sleeve, and the maximum bending angle is 180 degrees.

[0027] S4. After the profile is bent, the swing arm returns to its initial horizontal state. Then the auxiliary block is retracted and separated from the profile. The main pressure groove and the first pressure groove move down to reset, and the second pressure groove moves up to reset. At this time, it is convenient for the staff to remove the formed profile.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] (1) By setting up positioning tubes and sleeves, which are bending dies of two different sizes, the functions are diversified. When using positioning tubes, sleeves can easily slide out from the outside of positioning tubes. At this time, positioning tubes are aligned with the main pressure groove and the first pressure groove to ensure the accuracy of operation. When switching to using sleeves, the sleeves are fitted outside the positioning tubes and then correspond with the main pressure groove and the first pressure groove. Such adjustments enhance the functional flexibility and practicality of the entire device.

[0030] (2) When the swing arm is in a vertical downward state, the two main pressure grooves are flush on opposite sides. When the swing arm swings to a vertical upward state, the two main pressure grooves are flush on opposite sides and become opposite side walls. In this state, the flush side walls are relatively parallel and have a certain gap. At this time, the two ends of the profile will not interfere when bent at the same time.

[0031] (3) When the profile is bent, the two ends of the profile are spliced ​​together at the top of the U-shaped plate. Then, the anti-deviation motor drives the two pressure plates to swing, thereby pressing the profile on the top of the U-shaped plate. When the staff takes the profile, the degree of secondary deformation of the profile can be reduced.

[0032] (4) After selecting the positioning tube or sleeve as the bending die, the auxiliary motor drives the active gear to rotate, and the active gear drives the driven gear to rotate, so that the arc groove drives the sliding column to move, and then drives the auxiliary rod and auxiliary block to extend, limit the profile, enhance adaptability, and when the profile is taken out, the auxiliary block is retracted, the surface of the bending die becomes smooth, which makes it easy to pull out the profile horizontally, reduce secondary deformation, and the whole process is simple to operate, effectively improving work efficiency and processing accuracy. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of a double bending machine for an adjustable tabletop bending size according to the present invention.

[0034] Figure 2 for Figure 1 A schematic diagram of the front view structure.

[0035] Figure 3 This is a schematic diagram of the connection structure of the bending component, adjusting component and switching component in this invention.

[0036] Figure 4 This is a schematic diagram of the internal structure of the box in this invention.

[0037] Figure 5 This is a schematic diagram of the connection structure between the adjustment component and the switching component in this invention.

[0038] Figure 6 for Figure 5 A schematic diagram of the explosion structure.

[0039] Figure 7 This is a schematic diagram of the exploded structure of the auxiliary mechanism, positioning tube, and sleeve in this invention.

[0040] Figure 8 This is a schematic diagram of the auxiliary mechanism structure in this invention.

[0041] Figure 9 This is a schematic diagram of the connection structure between the positioning component and the anti-deviation component in this invention.

[0042] Explanation of reference numerals in the attached diagram: 1. Sliding worktable;

[0043] 2. Bending assembly; 21. Sliding frame; 22. Housing; 23. Drive cylinder; 24. Swing arm; 25. Slider; 26. Lifting cylinder; 27. Main pressure groove; 28. Electric turntable; 29. ​​Rotary rod;

[0044] 3. Positioning assembly; 31. Fixing base; 32. Positioning cylinder; 33. Connecting platform; 34. First pressing groove; 35. Lead screw; 36. U-shaped plate; 37. Clamping cylinder; 38. Second pressing groove;

[0045] 4. Adjustment assembly; 41. Positioning tube; 42. Auxiliary mechanism; 421. Extension bracket; 422. Driven gear; 423. Auxiliary rod; 424. Auxiliary block; 425. Auxiliary motor; 426. Drive gear; 427. Sliding column; 428. Arc groove;

[0046] 43. Support rod; 44. Through groove;

[0047] 5. Switching component; 51. Switching cylinder; 52. Sleeve;

[0048] 6. Anti-deviation assembly; 61. Anti-deviation frame; 62. Anti-deviation motor; 63. Pressure plate. Detailed Implementation

[0049] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0050] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0051] Please see Figure 1-9 The present invention provides the following technical solutions:

[0052] Example 1: A double bending machine with adjustable bending dimensions for a height-adjustable tabletop includes a sliding worktable 1, two sets of bending components 2 slidably connected to the top of the sliding worktable 1, and a positioning component 3 installed in the middle of the top surface of the sliding worktable 1. The sliding worktable 1 is manually rotated by a threaded rod, which drives the two sets of bending components 2 to move horizontally. The threaded rod on the sliding worktable 1 is a bidirectional threaded rod. When the bidirectional threaded rod rotates, the two sets of bending components 2 can move closer to or further away from each other. Both the bending components 2 and the positioning component 3 are suitable for limiting the profile. While limiting the profile, the bending components 2 can also bend and shape it. The specific structure of the bending components 2 is as follows:

[0053] See Figures 1-4 The two sets of bending components 2 also include a sliding frame 21 slidably connected to the top of the sliding worktable 1. A housing 22 is installed on the top of the sliding frame 21. The sliding frame 21 slides on the top of the sliding worktable 1 and drives the housing 22 to move synchronously. A drive cylinder 23 is installed on the opposing side of the two housings 22. The piston rod of the drive cylinder 23 extends into the interior of the corresponding housing 22 and is equipped with an electric turntable 28. The electric turntable 28 is slidably connected to the inner top wall of the housing 22. A rotating rod 29 is connected through the interior of the electric turntable 28. One end of the rotating rod 29 extends to the outside of the housing 22. The drive cylinder 23 is used to drive the corresponding electric turntable 28 to slide inside the corresponding housing 22, thereby adjusting the position of the rotating rod 29. The electric turntable 28 is used to drive the corresponding rotating rod 29 to rotate.

[0054] See Figures 1-4The outer wall of the rotating rod 29 is connected to a swing arm 24. The front side wall of the swing arm 24 is provided with a main pressure groove 27. The bottom of the front side wall of both swing arms 24 is equipped with a slider 25. The bottom of the slider 25 is vertically mounted with a lifting cylinder 26. The piston rod of the lifting cylinder 26 is connected to the corresponding main pressure groove 27. When the rotating rod 29 rotates, it drives the swing arm 24 to swing. The swing arm 24 drives the lifting cylinder 26 and the main pressure groove 27 to move, thereby adjusting the angle and position of the main pressure groove 27. The main pressure groove 27 is used to restrict the profile. The lifting cylinder 26 is used to drive the main pressure groove 27 and the profile to lift and adjust the height.

[0055] Each rotating rod 29 is provided with an adjustment component 4 on its outer side wall. The adjustment component 4 includes a positioning tube 41 sleeved on the outside of the rotating rod 29. Multiple support rods 43 are connected between the positioning tube 41 and the corresponding swing arm 24. The support rods 43 are used to provide auxiliary support for the positioning tube 41. When the profile is placed inside the main pressure groove 27, the lifting cylinder 26 drives the main pressure groove 27 to move upward and fit against the positioning tube 41. Then, the swing arm 24 drives the main pressure groove 27 to swing. The main pressure groove 27 drives the profile to be pressed on the outer side wall of the positioning tube 41, thereby bending the profile to a preset angle.

[0056] Each swing arm 24 is provided with a switching component 5 on its side wall. The switching component 5 is used to adjust the bending dimension of the profile. The specific structure of the switching component 5 is as follows:

[0057] The switching assembly 5 includes a sleeve 52 fitted outside the corresponding positioning tube 41. Switching cylinders 51 are installed on both sides of the swing arm 24. The piston rod of the switching cylinder 51 is connected to the corresponding sleeve 52. The switching cylinder 51 is used to drive the sleeve 52 to move horizontally, thereby adjusting the relative position of the sleeve 52 and the positioning tube 41. The positioning tube 41 and the sleeve 52 are two different sizes of bending dies. When using the positioning tube 41, the sleeve 52 is moved out of the positioning tube 41 and the positioning tube 41 is opposite to the main pressure groove 27 and the first pressure groove 34. When using the sleeve 52, the sleeve 52 is fitted outside the positioning tube 41 and the sleeve 52 is opposite to the main pressure groove 27 and the first pressure groove 34. This adjustment improves the functionality of the device.

[0058] See Figure 9 The specific structure of positioning component 3 is as follows:

[0059] The positioning component 3 includes a first pressing groove 34 and a second pressing groove 38 disposed on the top of the sliding worktable 1. The positioning component 3 also includes a fixed seat 31 installed in the middle of the top surface of the sliding worktable 1. A positioning cylinder 32 is also installed on the top of the fixed seat 31. The piston rod of the positioning cylinder 32 is connected to a connecting platform 33. The first pressing groove 34 is installed on the top of the connecting platform 33, and the first pressing groove 34 and the second pressing groove 38 are arranged opposite to each other. When the main pressing groove 27 limits the placement of the profile, the first pressing groove 34 provides auxiliary support for the middle part of the profile. When the main pressing groove 27 pushes the profile upward, the first pressing groove 34 simultaneously drives the middle part of the profile upward. When the profile fits against the outer wall of the positioning tube 41, the main pressing groove 27 and the first pressing groove 34 stop moving at the same time.

[0060] Two lead screws 35 are installed on the top of the fixed base 31. A U-shaped plate 36 is sleeved on the outer wall of the two lead screws 35. A vertically upward clamping cylinder 37 is installed inside the U-shaped plate 36. The piston rod of the clamping cylinder 37 is connected to the second pressure groove 38 through a connecting plate. The clamping cylinder 37 is used to drive the second pressure groove 38 to move up and down. When the profile is in contact with the positioning tube 41, the second pressure groove 38 moves down and is in contact with the first pressure groove 34. The first pressure groove 34 and the second pressure groove 38 cooperate to assist in clamping the profile and prevent the profile from shifting when bending.

[0061] In Example 2, when the double bending machine bends the profile, the two folding mechanisms fold at a preset angle. A conventional double bending machine can bend 90 degrees. If the profile is double-bent into an octagonal shape in one go, the two folding mechanisms need to be controlled separately. Otherwise, the two folding mechanisms will interfere with each other. Moreover, after one side is bent, the other side is bent again, and the profile will wobble, which can easily affect the shape during bending.

[0062] Therefore, when the swing arm 24 is in a vertically downward state, the two main pressure grooves 27 are flush on opposite sides. When the swing arm 24 swings to a vertically upward state, the two main pressure grooves 27 become opposite sidewalls. In this state, the flush sidewalls are relatively parallel and have a certain gap. At this time, the two ends of the profile will not interfere when bent at the same time.

[0063] In addition, when the profile is bent, the end will wobble slightly due to the change in shape. After bending, the profile may spring back, and the position of the bending joint of the profile will shift, causing secondary deformation during this process.

[0064] To this end, an anti-deviation component 6 is installed on the top of the U-shaped plate 36. The anti-deviation component 6 includes an anti-deviation frame 61 installed on the top of the U-shaped plate 36. An anti-deviation motor 62 is installed on one side of the anti-deviation frame 61. The output end of the anti-deviation motor 62 extends into the interior of the anti-deviation frame 61 and is connected to two pressure plates 63. When the profile is bent, the two ends of the profile are spliced ​​together at the top of the U-shaped plate 36. Then, the anti-deviation motor 62 drives the two pressure plates 63 to swing, thereby pressing the profile on the top of the U-shaped plate 36, thereby positioning the two ends of the profile and preventing the profile from springing back after bending, which can reduce the degree of secondary deformation of the profile.

[0065] In Example 3, the profile is bent according to a disc-shaped mold. An annular groove needs to be opened on the surface of the disc-shaped mold to prevent the profile from shifting during bending. However, if it is bent into a ring, the profile is difficult to disassemble. Even if the pressure plate 63 is set to restrict the end of the profile, secondary deformation will still occur, resulting in poor bending effect.

[0066] To this end, two sets of auxiliary mechanisms 42 are set inside each positioning tube 41. Each auxiliary mechanism 42 penetrates both the corresponding positioning tube 41 and sleeve 52. When the operator selects the desired positioning tube 41 or sleeve 52 as the bending mold, the auxiliary mechanism 42 opens and extends to the outer wall of the bending mold. This not only limits the bending of the profile but also provides strong adaptability. Furthermore, when the operator removes the profile, the auxiliary mechanism 42 can retract, making the surface of the bending mold smooth. The operator only needs to pull the profile horizontally, further reducing secondary deformation. The specific structure of the auxiliary mechanism 42 is as follows:

[0067] See Figures 5-8 Each auxiliary mechanism 42 includes an extension bracket 421 connected to the outer wall of the corresponding rotating rod 29. An auxiliary rod 423 is slidably connected to the extension arm of the extension bracket 421. An auxiliary block 424 is connected to the end of the auxiliary rod 423 away from the corresponding extension bracket 421. Multiple through slots 44 are equidistantly opened around the outer walls of the positioning tube 41 and the sleeve 52. The multiple through slots 44 on the positioning tube 41 and the sleeve 52 are correspondingly set with the auxiliary blocks 424. The through slots 44 on the positioning tube 41 and the sleeve 52 are of the same length. When the auxiliary block 424 extends out from the through slot 44 on the outer wall of the positioning tube 41 or the sleeve 52, the purpose of limiting the position of the profile can be achieved. After retraction, the positioning tube 41 or the sleeve 52 becomes smooth, making it convenient for the staff to remove the profile.

[0068] See Figures 5-8An auxiliary motor 425 is installed on the side wall of the extension bracket 421. The output end of the auxiliary motor 425 is connected to a drive gear 426. A driven gear 422 is provided on one side of the extension bracket 421. The driven gear 422 is rotatably connected to the outer side wall of the rotating rod 29. Multiple arc-shaped grooves 428 are equidistantly arranged around the side wall of the driven gear 422. A sliding column 427 is slidably connected inside each arc-shaped groove 428. One end of the sliding column 427 is connected to the corresponding auxiliary rod 423. That is, when the operator selects one of the positioning tube 41 or the sleeve 52 as the bend... After the bending mold is completed, the auxiliary motor 425 drives the drive gear 426 to rotate, and the drive gear 426 drives the driven gear 422 to rotate. When the driven gear 422 rotates, it causes the position of the arc groove 428 to change. The arc groove 428 presses the corresponding sliding column 427 to move in a limited position, which in turn drives the corresponding auxiliary rod 423 and auxiliary block 424 to move. The auxiliary block 424 extends out from the inside of the positioning tube 41 or the sleeve 52. In this state, it can not only limit the profile that needs to be bent, but also has strong adaptability. Both the positioning tube 41 and the sleeve 52 can be used.

[0069] Meanwhile, when the staff removes the profile, the auxiliary block 424 retracts, making the surface of the bending mold smooth. The staff only needs to pull the profile out horizontally, further reducing the possibility of secondary deformation.

[0070] Example 4: A method of using a double bending machine with adjustable bending dimensions for a height-adjustable tabletop. The method includes the following steps:

[0071] S1. Adjust the subsequent bending dimensions by switching the positions of the positioning tube 41 and the sleeve 52.

[0072] The more specific steps in S1 are as follows:

[0073] S11. By switching cylinder 51, the sleeve 52 is pushed to move horizontally, thereby adjusting the relative position of the sleeve 52 and the positioning tube 41. The positioning tube 41 and the sleeve 52 are bending dies of two different sizes. When using the positioning tube 41, the sleeve 52 is moved out of the positioning tube 41 and the positioning tube 41 is opposite to the main pressure groove 27 and the first pressure groove 34. When using the sleeve 52, the sleeve 52 is sleeved on the outside of the positioning tube 41 and the sleeve 52 is opposite to the main pressure groove 27 and the first pressure groove 34.

[0074] S2. Place the profile material supporting the desktop on the top of the two main pressure grooves 27 and the first pressure groove 34 and fit them together. Then, the main pressure grooves 27 and the first pressure groove 34 push the profile upward until the top of the profile fits against the outer wall of the bending mold of the selected size, i.e., the positioning tube 41 or the sleeve 52. At the same time, the second pressure groove 38 moves downward. The first pressure groove 34 and the second pressure groove 38 cooperate to clamp the middle of the profile. Then, the auxiliary mechanism 42 extends out from the inside of the selected bending mold to limit the movement.

[0075] The more specific steps of S2 are as follows:

[0076] S21. Place the profile material of the desktop support on the top of the two main pressure grooves 27 and the first pressure groove 34 and fit them together. Then, the lifting cylinder 26 pushes the main pressure groove 27 to move upward. At the same time, the positioning cylinder 32 pushes the first pressure groove 34 to move upward. The clamping cylinder 37 drives the second pressure groove 38 to move downward. In this state, the profile is pushed upward until the top of the profile is in contact with the outer wall of the bending mold of the selected size, that is, the positioning tube 41 or the sleeve 52. At the same time, the second pressure groove 38 moves downward and cooperates with the first pressure groove 34 to clamp the profile.

[0077] S22. Then, the auxiliary motor 425 drives the drive gear 426 to rotate. The drive gear 426 drives the driven gear 422 to rotate. When the driven gear 422 rotates, it causes the position of the arc groove 428 to change. The arc groove 428 presses the corresponding sliding column 427 to move in a limited position, thereby driving the corresponding auxiliary rod 423 and auxiliary block 424 to move. The auxiliary block 424 extends out from the inside of the positioning tube 41 or the sleeve 52, thereby limiting the profile.

[0078] S3. Then, the rotating rod 29 drives the swing arm 24 and the corresponding main pressure groove 27 to rotate, causing the profile to bend along the outer wall of the positioning tube 41 or the sleeve 52, and the maximum bending angle is 180 degrees.

[0079] The more specific steps for S3 are as follows:

[0080] S31. Then the electric turntable 28 drives the rotating rod 29 to rotate, which causes the rotating rod 29 to drive the swing arm 24 and the corresponding main pressure groove 27 to rotate, causing the profile to bend along the outer wall of the positioning tube 41 or the sleeve 52, and the maximum bending angle is 180 degrees.

[0081] S4. After the profile is bent, the swing arm 24 returns to its initial horizontal state. Then the auxiliary block 424 is retracted and separated from the profile. The main pressure groove 27 and the first pressure groove 34 move down to reset, and the second pressure groove 38 moves up to reset. At this time, it is convenient for the staff to remove the formed profile.

[0082] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

Claims

1. A double bending machine for a height-adjustable tabletop bending size, characterized in that: It includes a sliding worktable (1), two sets of bending components (2) slidably connected to the top of the sliding worktable (1), and a positioning component (3) installed in the middle of the top surface of the sliding worktable (1). Both sets of bending components (2) include a housing (22) and a swing arm (24) rotatably connected to the front side of the housing (22). A rotating rod (29) is inserted inside the housing (22). The swing arm (24) is connected to the outer side wall of the corresponding rotating rod (29). A main pressure groove (27) is provided on the front side wall of the swing arm (24). The positioning component (3) includes a first pressure groove (34) and a second pressure groove (38) disposed on the top of the sliding worktable (1); Each of the rotating rods (29) is provided with an adjustment assembly (4) on its outer side wall. The adjustment assembly (4) includes a positioning tube (41) sleeved on the outside of the rotating rod (29) and two sets of auxiliary mechanisms (42) disposed inside the positioning tube (41). Each of the swing arms (24) is provided with a switching component (5) on its side wall. The switching component (5) includes a sleeve (52) sleeved outside the corresponding positioning tube (41). The auxiliary mechanisms (42) are all provided through the corresponding positioning tube (41) and the sleeve (52). Multiple support rods (43) are connected between the positioning tube (41) and the corresponding swing arm (24). Switching cylinders (51) are installed on both sides of the swing arm (24). The piston rod of the switching cylinder (51) is connected to the corresponding sleeve (52). Each of the auxiliary mechanisms (42) includes an extension bracket (421) connected to the outer wall of the corresponding rotating rod (29). An auxiliary rod (423) is slidably connected to the extension arm of the extension bracket (421). An auxiliary block (424) is connected to the end of the auxiliary rod (423) away from the corresponding extension bracket (421). Multiple through slots (44) are equidistantly opened around the outer walls of the positioning tube (41) and the sleeve (52). The multiple through slots (44) on the positioning tube (41) and the sleeve (52) are correspondingly arranged with the auxiliary block (424). An auxiliary motor (425) is installed on the side wall of the extension bracket (421). The output end of the auxiliary motor (425) is connected to a drive gear (426). A driven gear (422) is provided on one side of the extension bracket (421). The driven gear (422) is rotatably connected to the outer side wall of the rotating rod (29). Multiple arc-shaped grooves (428) are equidistantly arranged around the side wall of the driven gear (422). A sliding column (427) is slidably connected inside each arc-shaped groove (428). One end of the sliding column (427) is connected to the corresponding auxiliary rod (423).

2. The double bending machine with adjustable bending size for a height-adjustable tabletop as described in claim 1, characterized in that: The two sets of bending components (2) also include a sliding frame (21) slidably connected to the top of the sliding worktable (1). The two boxes (22) are respectively installed on the top of the two sliding frames (21). A drive cylinder (23) is installed on the opposing side of the two boxes (22). The piston rod of the drive cylinder (23) extends into the interior of the corresponding box (22) and is equipped with an electric turntable (28). The electric turntable (28) is slidably connected to the inner top wall of the box (22). One end of the rotating rod (29) is inserted and installed inside the electric turntable (28).

3. The double bending machine for adjustable bending dimensions of a height-adjustable tabletop as described in claim 2, characterized in that: Both of the swing arms (24) have sliders (25) installed at the bottom of their front side walls. A lifting cylinder (26) is installed vertically upward at the bottom of the slider (25). The piston rod of the lifting cylinder (26) is connected to the corresponding main pressure groove (27).

4. The double bending machine with adjustable bending size for a height-adjustable tabletop as described in claim 1, characterized in that: The positioning assembly (3) includes a fixed seat (31) installed in the middle of the top surface of the sliding worktable (1) and two lead screws (35) installed on the top of the fixed seat (31). The outer walls of the two lead screws (35) are fitted with U-shaped plates (36). A vertically upward clamping cylinder (37) is installed inside the U-shaped plate (36). The piston rod of the clamping cylinder (37) is connected to the second pressure groove (38) through a connecting plate.

5. A double-bending machine with adjustable bending dimensions for a height-adjustable tabletop as described in claim 4, characterized in that: The top of the fixed base (31) is also equipped with a positioning cylinder (32), the piston rod of the positioning cylinder (32) is connected to a connecting platform (33), the first pressure groove (34) is installed on the top of the connecting platform (33), and the first pressure groove (34) and the second pressure groove (38) are arranged opposite to each other.

6. A double-bending machine with adjustable bending dimensions for a height-adjustable tabletop as described in claim 5, characterized in that: An anti-deviation assembly (6) is installed on the top of the U-shaped plate (36). The anti-deviation assembly (6) includes an anti-deviation frame (61) installed on the top of the U-shaped plate (36). An anti-deviation motor (62) is installed on one side of the anti-deviation frame (61). The output end of the anti-deviation motor (62) extends into the interior of the anti-deviation frame (61) and is connected to two pressure plates (63).

7. A method of using a double bending machine for adjustable bending dimensions of a height-adjustable tabletop, comprising using a double bending machine for adjustable bending dimensions of a height-adjustable tabletop as described in any one of claims 1-6, characterized in that, Includes the following steps: S1. Adjust the subsequent bending dimensions by switching the positions of the positioning tube (41) and the sleeve (52); S2. Place the profile material of the desktop support on the top of the two main pressure grooves (27) and the first pressure groove (34) and fit them together. Then the main pressure groove (27) and the first pressure groove (34) push the profile upward until the top of the profile fits the outer wall of the bending mold of the selected size, that is, the positioning tube (41) or the sleeve (52). At the same time, the second pressure groove (38) moves downward. The first pressure groove (34) and the second pressure groove (38) cooperate to clamp the middle of the profile. Then the auxiliary mechanism (42) extends out from the inside of the selected bending mold to limit the movement. S3. Then the rotating rod (29) drives the swing arm (24) and the corresponding main pressure groove (27) to rotate, causing the profile to bend along the outer wall of the positioning tube (41) or sleeve (52), and the maximum bending angle is 180 degrees. S4. After the profile is bent, the swing arm (24) returns to the initial horizontal state. Then the auxiliary block (424) is retracted and separated from the profile. The main pressure groove (27) and the first pressure groove (34) move down to reset, and the second pressure groove (38) moves up to reset. At this time, it is convenient for the staff to remove the formed profile.

Images