Angle-adjustable bending machine

Abstract

This utility model discloses an angle-adjustable bending machine, specifically relating to the field of bending machine technology. It includes a supporting base plate with concave frames symmetrically installed at both ends. A rotating shaft is rotatably connected inside the concave frames, and a turntable is installed on the outer side of the rotating shaft. The turntable has a groove inside, and multiple connecting hinges are equidistantly installed on the outer side of the turntable. A blocking pad of varying sizes is installed at the end of each hinge furthest from the turntable. A frame mechanism is provided on the supporting base plate, and a downward bending mechanism is mounted on the frame mechanism. This utility model, by setting two rotatable, multi-sized blocking pads next to the lower die of the bending machine, allows the upper die to quickly achieve physical limiting by rotating the turntable to engage the desired pad. When the upper die, carrying the blocking block, presses down and encounters the pad, it cannot press further. This completely solves the problem of accidental over-pressing of the upper die, leading to deviations in the workpiece bending angle.

Description

Technical Field

[0001] This utility model relates to the field of bending machine technology, and more specifically, to an angle-adjustable bending machine. Background Technology

[0002] Common angle-adjustable bending machines can only adjust the bending angle of metal sheets by controlling the stroke of the upper die, but they lack the function of preventing over-bending. In actual bending operations, the lifting stroke of the upper die is adjusted by an external PLC controller. If the upper die's downward stroke exceeds the required height due to external PLC programming errors or other special reasons, the bending angle of the sheet will deviate, ultimately resulting in a reduction in product quality.

[0003] In summary, to ensure product quality, it is necessary to address the issue of the upper mold's downward stroke exceeding the required height. This can be achieved by using a limiting pad to block the upper mold when it reaches the required height, thereby preventing it from continuing to press down. Utility Model Content

[0004] The present invention provides an angle-adjustable bending machine to solve the problem that the bending angle of the sheet metal is deviated due to the upper die pressing stroke exceeding the required height caused by external PLC programming errors or other special reasons.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an angle-adjustable bending machine, including a supporting base plate, concave frames symmetrically installed at both ends of the supporting base plate, a rotating shaft rotatably connected inside the concave frames, a turntable installed outside the rotating shaft, a groove opened inside the turntable, multiple connecting hinges equidistantly installed on the outside of the turntable, a blocking pad installed at the end of the connecting hinges away from the turntable, the multiple blocking pads having different sizes, a frame mechanism provided on the supporting base plate, and a downward bending mechanism provided on the frame mechanism.

[0006] In a preferred embodiment, the frame mechanism supports the entire device and includes a lower die assembly and a power assembly. The lower die assembly is used to fix the bending die, and the output end of the power assembly is connected to the downward bending mechanism. The power assembly is used to control the lifting and lowering movement of the downward bending mechanism.

[0007] In a preferred embodiment, the lower mold assembly includes a support frame mounted on the upper end of a support base plate, a plurality of vertical plates mounted inside the support frame, and a lower mold mounted on the upper end of the support frame, with the end of a blocking pad away from the turntable inserted into the interior of the lower mold.

[0008] In a preferred embodiment, the power assembly includes four rectangular support slides mounted on the upper end of the support frame, a top plate mounted on the upper end of the support slides, and a hydraulic cylinder mounted on the upper end of the top plate.

[0009] In a preferred embodiment, the downward bending mechanism is used to bend the metal sheet. The downward bending mechanism includes a limiting sliding component and an upper die component. The sliding end of the limiting sliding component is connected to the support slide rod. The limiting sliding component is used to limit the movement range of the upper die component. The upper die component is used to cooperate with the lower die component to bend the metal sheet.

[0010] In a preferred embodiment, the limiting sliding assembly includes a lifting plate installed at the output end of a hydraulic cylinder and positioning plates installed at the four corners of the lifting plate. The hydraulic cylinder is used to control the lifting movement of the lifting plate, and the positioning plates are slidably connected to the support slide rods.

[0011] In a preferred embodiment, the upper mold assembly includes an upper mold mounted on the lower end of the lifting plate and two blocking blocks mounted on the lower end of the lifting plate.

[0012] In a preferred embodiment, a rotating grip is mounted on the surface of the shaft, and a locking block is mounted on the outside of the shaft, the locking block being inserted into the interior of a groove.

[0013] The beneficial effects of this utility model are as follows:

[0014] This invention provides two rotatable, multi-sized blocking pads next to the lower die of a bending machine. By simply rotating the turntable to insert the required pad, the upper die, with its blocking block, can no longer press down when it encounters the pad. This allows for rapid physical limiting and solves the problem of the upper die accidentally pressing too hard, causing deviations in the bending angle of the workpiece. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the frame structure of this utility model.

[0017] Figure 3 This is a schematic diagram of the pad adjustment assembly of this utility model.

[0018] Figure 4 This is an exploded view of the pad adjustment assembly of this utility model.

[0019] Figure 5 This is a schematic diagram of the downward bending mechanism of this utility model.

[0020] The attached figures are labeled as follows: 1. Support base plate; 11. Concave frame; 12. Rotating shaft; 13. Rotating handle; 14. Turntable; 15. Groove; 16. Locking block; 17. Connecting hinge; 18. Blocking pad; 211. Support frame; 212. Vertical plate; 213. Lower mold; 221. Support slide bar; 222. Top plate; 223. Hydraulic cylinder; 311. Lifting plate; 312. Positioning plate; 321. Upper mold; 322. Blocking block. Detailed Implementation

[0021] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0022] Refer to the instruction manual appendix Figures 1 to 5 An angle-adjustable bending machine includes a support base plate 1. Concave frames 11 are symmetrically installed at both ends of the support base plate 1. A rotating shaft 12 is rotatably connected inside the concave frames 11. A turntable 14 is installed on the outside of the rotating shaft 12. A groove 15 is opened inside the turntable 14. Multiple connecting hinges 17 are installed at equal intervals on the outside of the turntable 14. A blocking pad 18 is installed at the end of the connecting hinge 17 away from the turntable 14. The multiple blocking pads 18 have different sizes. A frame mechanism is provided on the support base plate 1. A downward bending mechanism is provided on the frame mechanism.

[0023] It should be noted that the concave frame 11 provides a stable support for the rotating shaft 12. The turntable 14 is rotatably mounted in the concave frame 11 via the rotating shaft 12. Multiple blocking pads 18 of different sizes are hinged to the circumference of the turntable 14 via connecting hinges 17. The connecting hinges 17 allow the blocking pads 18 to swing freely outward or fit against the turntable 14. The groove 15 is used to cooperate with the locking block 16 for positioning.

[0024] It is worth noting that the key to this structure is that by rotating the turntable 14, the blocking pad 18 of the required specific height can be rotated into the interior of the lower mold 213, thereby physically limiting the downward stroke of the upper mold 321 and preventing overtravel bending problems caused by PLC errors or other reasons from a mechanical perspective.

[0025] Refer to the instruction manual appendix Figures 1 to 2 The frame mechanism is used to support the entire device. The frame mechanism includes a lower die assembly and a power assembly. The lower die assembly is used to fix the bending die. The output end of the power assembly is connected to the lower bending mechanism. The power assembly is used to control the lifting and lowering movement of the lower bending mechanism.

[0026] It should be noted that the lower die assembly forms the basic frame of the equipment and supports the lower die 213 used for fixing and bending. The power assembly provides driving force for the bending action, and its output end is connected to and drives the lower pressing bending mechanism to perform precise lifting and lowering movements.

[0027] Refer to the instruction manual appendix Figure 2 The lower mold assembly includes a support frame 211 mounted on the upper end of the support base plate 1, multiple vertical plates 212 mounted on the inner side of the support frame 211, and a lower mold 213 mounted on the upper end of the support frame 211. The end of the blocking pad 18 away from the turntable 14 is inserted into the interior of the lower mold 213.

[0028] It should be noted that the support frame 211 is installed on the support base plate 1 and is the core support structure of the lower mold assembly. Multiple vertical plates 212 are installed on the inner side of the support frame 211 to strengthen the rigidity and stability of the support frame 211. The lower mold 213 is fixedly installed on the upper end face of the support frame 211 and is a component that directly contacts the metal sheet to be bent and forms bending features such as V-grooves.

[0029] Refer to the instruction manual appendix Figure 2 The power assembly includes four rectangular support slides 221 mounted on the upper end of the support frame 211, a top plate 222 mounted on the upper end of the support slides 221, and a hydraulic cylinder 223 mounted on the upper end of the top plate 222.

[0030] It should be noted that the four support slide rods 221 are arranged in a rectangular shape and are vertically installed on the upper end face of the support frame 211. They not only serve as a guide structure but also support the upper components. The top plate 222 is installed on the top of the four support slide rods 221 to form a stable top platform. The hydraulic cylinder 223 is installed upside down on the top plate 222, with its piston rod extending downward as the main power output source.

[0031] Refer to the instruction manual appendix Figures 2 to 5 The downward bending mechanism is used to bend metal sheets. The downward bending mechanism includes a limiting sliding component and an upper die component. The sliding end of the limiting sliding component is connected to the support slide rod 221. The limiting sliding component is used to limit the movement range of the upper die component. The upper die component is used to cooperate with the lower die component to bend the metal sheets.

[0032] It should be noted that the limiting sliding assembly is connected to the support slide rod 221 of the power assembly. Its function is to ensure that the upper mold assembly can only move in the vertical direction defined by the support slide rod 221 to prevent skewing. The upper mold assembly is the core component for performing the bending action. The upper mold 321 on it moves downward under the drive of the hydraulic cylinder 223 and cooperates with the fixed lower mold 213 to bend the metal sheet placed between the two into shape.

[0033] It is worth noting that the blocking block 322, as part of the upper mold assembly, will contact the selected blocking pad 18 at its downward extending end, which is the key execution point for achieving physical limit of the stroke.

[0034] Refer to the instruction manual appendix Figure 5 The limiting sliding assembly includes a lifting plate 311 installed at the output end of the hydraulic cylinder 223 and positioning plates 312 installed at the four corners of the lifting plate 311. The hydraulic cylinder 223 is used to control the lifting movement of the lifting plate 311, and the positioning plates 312 are slidably connected to the support slide rod 221.

[0035] It should be noted that the lifting plate 311 is directly installed at the output end of the piston rod of the hydraulic cylinder 223 and is the direct drive object of the hydraulic cylinder 223. It carries the upper mold assembly. The positioning plate 312 is installed at the four corners of the lifting plate 311 and forms a precise sliding fit with the support slide rod 221 to ensure that the lifting plate 311 can only rise and fall smoothly along the axial direction of the support slide rod 221.

[0036] Refer to the instruction manual appendix Figure 5 The upper mold assembly includes an upper mold 321 installed at the lower end of the lifting plate 311 and two blocking blocks 322 installed at the lower end of the lifting plate 311.

[0037] It should be noted that the upper mold 321 is fixedly installed at the center of the lower end face of the lifting plate 311 and is used to press into the groove of the lower mold 213 to form the plate. The two blocking blocks 322 are also fixedly installed on the lower end face of the lifting plate 311 and are symmetrically arranged on both sides of the upper mold 321. They extend downward to a certain height, and their lower end faces are the planes that finally come into contact with the blocking pad 18 to achieve stroke limitation.

[0038] Refer to the instruction manual appendix Figure 4 A rotating handle 13 is mounted on the surface of the rotating shaft 12, and a locking block 16 is mounted on the outside of the rotating shaft 12. The locking block 16 is inserted into the inside of the groove 15.

[0039] It should be noted that the rotating handle 13 is installed at the end of the rotating shaft 12, and the locking block 16 is fixedly installed on the outside of the rotating shaft 12. When the rotating shaft 12 is rotated by rotating the rotating handle 13, the locking block 16 will engage with the groove 15, which will drive the turntable 14 to rotate. The turntable 14 will drive multiple blocking pads 18 to rotate, thereby adjusting the blocking pads 18 of different sizes to be inserted into the lower mold 213.

[0040] Working principle: Before operation, according to the required bending angle, rotate the handle 13 to drive the rotating shaft 12 to rotate. The locking block 16 on the outside of the rotating shaft 12 is inserted into the groove 15 of the turntable 14, thereby driving the turntable 14 to rotate within the concave frame 11. Multiple blocking pads 18 of different sizes, which are installed on the outside of the turntable 14 via the connecting hinge 17, rotate accordingly. At this time, the blocking pads 18 that were originally stuck inside the lower mold 213 will drive the connecting hinge 17 to rotate due to the obstruction of the lower mold 213, until they are disengaged from the interior of the lower mold 213. Then, they re-adhere to the turntable 14 by gravity. Next, adjust the blocking pad 18 corresponding to the required limiting height to the working position, so that the end away from the turntable 14 is stuck inside the lower mold 213. Place the metal sheet to be bent on the lower mold 213, start the hydraulic cylinder 223, and its output end drives the lifting plate 311 downward. During the movement, the positioning plates 312 at the four corners of the lifting plate 311 slide along the support slide rod 221 for guidance and limitation. The upper mold 321 installed at the lower end of the lifting plate 311 descends accordingly, cooperating with the lower mold 213 to apply pressure to the metal sheet for bending. When the bending reaches the predetermined angle, the blocking block 322 installed at the lower end of the lifting plate 311 contacts and is blocked by the pre-selected blocking pad 18 inserted into the lower mold 213, forcibly stopping the lifting plate 311 and the upper mold 321 from continuing to press down, thereby precisely limiting the bending stroke and preventing the bending angle deviation caused by excessive pressing of the upper mold 321 due to the stroke control error of the hydraulic cylinder 223. After the bending is completed, the hydraulic cylinder 223 retracts, driving the lifting plate 311, positioning plate 312, upper mold 321 and blocking block 322 to rise and reset along the support slide rod 221, and the bent workpiece can be taken out.

[0041] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. An angle-adjustable bending machine, characterized in that: The support base plate (1) is symmetrically equipped with concave frames (11) at both ends. A rotating shaft (12) is rotatably connected inside the concave frame (11). A turntable (14) is installed on the outside of the rotating shaft (12). A groove (15) is opened inside the turntable (14). Multiple connecting hinges (17) are installed at equal intervals on the outside of the turntable (14). A blocking pad (18) is installed on the end of the connecting hinge (17) away from the turntable (14). The multiple blocking pads (18) are of different sizes. A frame mechanism is provided on the support base plate (1). A downward bending mechanism is provided on the frame mechanism.

2. The angle-adjustable bending machine according to claim 1, characterized in that: The frame mechanism supports the entire device. The frame mechanism includes a lower die assembly and a power assembly. The lower die assembly is used to fix the bending die. The output end of the power assembly is connected to the downward bending mechanism. The power assembly is used to control the lifting and lowering movement of the downward bending mechanism.

3. The angle-adjustable bending machine according to claim 2, characterized in that: The lower mold assembly includes a support frame (211) mounted on the upper end of the support base plate (1), multiple vertical plates (212) mounted on the inner side of the support frame (211), and a lower mold (213) mounted on the upper end of the support frame (211). The end of the blocking pad (18) away from the turntable (14) is inserted into the interior of the lower mold (213).

4. The angle-adjustable bending machine according to claim 3, characterized in that: The power assembly includes four support slides (221) mounted in a rectangular shape on the upper end of the support frame (211), a top plate (222) mounted on the upper end of the support slides (221), and a hydraulic cylinder (223) mounted on the upper end of the top plate (222).

5. The angle-adjustable bending machine according to claim 4, characterized in that: The downward bending mechanism is used to bend metal sheets. The downward bending mechanism includes a limiting sliding component and an upper die component. The sliding end of the limiting sliding component is connected to the support slide rod (221). The limiting sliding component is used to limit the movement range of the upper die component. The upper die component is used to cooperate with the lower die component to bend the metal sheets.

6. The angle-adjustable bending machine according to claim 5, characterized in that: The limiting sliding assembly includes a lifting plate (311) installed at the output end of the hydraulic cylinder (223) and positioning plates (312) installed at the four corners of the lifting plate (311). The hydraulic cylinder (223) is used to control the lifting movement of the lifting plate (311), and the positioning plate (312) is slidably connected to the support slide rod (221).

7. The angle-adjustable bending machine according to claim 6, characterized in that: The upper mold assembly includes an upper mold (321) installed at the lower end of the lifting plate (311) and two blocking blocks (322) installed at the lower end of the lifting plate (311).

8. The angle-adjustable bending machine according to claim 1, characterized in that: A rotating handle (13) is mounted on the surface of the rotating shaft (12), and a locking block (16) is mounted on the outside of the rotating shaft (12), which is inserted into the inside of the groove (15).

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