Non-standard spiral bending mechanism

Abstract

The utility model discloses a non-standard spiral bending mechanism, including support subassembly, conical depressor subassembly, bending mould subassembly, annular workstation subassembly and drive assembly, match processing radius through rotating conical depressor, according to the specification of the profile to be bent replace the matched guiding clamp, send the profile to be bent into annular workstation upper surface, through the end point clamping ware clamping on the sector bending mould, adjust the position of guiding clamp again, make the both sides of the profile to be bent respectively adhere sector bending mould and guiding clamp, transmission motor drives the rotation of transmission shaft, transmission shaft drives the rotation of driving gear, driving gear drives the rotation of driven gear, and then drive annular workstation to rotate, and the profile to be bent is processed into the bending profile of required radius under the extrusion of guiding clamp, adjust the ring structure radius size that the sector bending mould is formed, need not prepare and replace the bending mould of different specifications, improve the bending efficiency and reduce the processing cost simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of steel processing, and in particular to a non-standard spiral bending mechanism. Background Technology

[0002] Existing steel bending mechanisms typically use a bending die in conjunction with a clamping device. The clamping device fixes one end of the profile to be bent onto the die, and the bending of the profile is achieved by rotating the die.

[0003] For example, Chinese invention patent CN106734439B discloses "an automatic spiral half-tube winding system", which introduces the formed half-tube to the starting position of the half-tube winding outside the cylinder, and the motor drives the bending mold to rotate to achieve the purpose of bending the half-tube.

[0004] This type of steel bending mechanism has a defect. Because the bending die in the mechanism is fixed on the roller frame and rotates around its own reference axis, it is driven by a motor to rotate. Its structure is an integral forming device. Therefore, all such bending dies have a fixed radius. When enterprises want to process steel with different radii, they need bending dies with different radii to keep on hand. The cost of keeping the dies is high and the efficiency of changing bending dies is low. Utility Model Content

[0005] In order to overcome the problems of existing technology, when bending steel, the bending die radius is fixed, which can only process profiles with a fixed radius. If different radii need to be processed, different bending dies need to be changed, resulting in high die preparation costs and low efficiency.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a non-standard spiral bending mechanism, comprising a support assembly, a conical presser assembly, a bending die assembly, an annular worktable assembly and a drive assembly. The conical presser assembly, the bending die assembly and the annular worktable assembly are all located directly above the support assembly horizontally, and the three share the same reference axis. The three are radially distributed along the reference axis, and their spatial positions are as follows: the conical presser assembly is located on the inner side, the annular worktable assembly is located on the outer side, the bending die assembly is located between the two, and the drive assembly is located on the side of the support assembly.

[0007] The support components include a worktable and a work support, wherein the worktable is designed to be recessed and the work support is fixedly connected to the bottom of the worktable;

[0008] The conical presser assembly includes a reducing rod, which is placed perpendicular to the worktable surface and its bottom end is fixedly connected to the upper surface of the worktable surface. A reducing rod nut and a conical presser are movably connected to the reducing rod, and the reducing rod nut is located directly above the horizontal conical presser.

[0009] The bending die assembly includes several fan-shaped bending dies, and these fan-shaped bending dies share the same reference axis as the diameter-changing rod. The fan-shaped bending dies form a ring structure that can expand and contract. Each fan-shaped bending die is stepped, that is, each fan-shaped bending die is divided into an upper half and a lower half. The two parts share the same reference axis, and the outer diameter of the upper half of the fan-shaped bending die is larger than the outer diameter of the lower half. An expansion roller is provided at the bottom of the lower half.

[0010] In the aforementioned non-standard spiral bending mechanism, an end clamp is installed on the upper half of one of the fan-shaped bending molds, and two first fixing screws are mounted on the end clamp.

[0011] The aforementioned non-standard spiral bending mechanism includes an annular worktable assembly. The annular worktable is mounted on the worktable surface and shares the same reference axis as the variable diameter rod. The height of the annular worktable is the same as the lower half of the fan-shaped bending mold, and the diameter of the hollowed-out portion in the middle of the annular worktable is the same as the outer diameter of the annular structure formed by the unexpanded fan-shaped bending mold.

[0012] The aforementioned non-standard spiral bending mechanism has a T-shaped guide groove on the upper surface of the annular worktable. The guiding direction of the T-shaped guide groove is from the center of the annular worktable to the outer diameter edge. A guide clamp is movably connected to the T-shaped guide groove. The guide clamp passes through the guide groove to constrain the profile to be bent on the annular worktable, and the two sides of the profile to be bent are respectively in close contact with the bending mold and the clamp. A second fixing screw is movably connected to the guide clamp.

[0013] In the aforementioned non-standard spiral bending mechanism, the lower surface of the annular worktable is engraved with gear teeth, which constitute a driven gear. A gear partition is provided directly above the driven gear horizontally, and the gear partition is fixedly connected to the worktable surface through several fixed blocks. Several rotating rollers are fixedly connected below the driven gear.

[0014] The aforementioned non-standard spiral bending mechanism includes a drive assembly comprising a drive motor, a motor bracket, a drive shaft, and a drive gear. The drive motor is fixedly connected to the motor bracket, which is in turn fixedly connected to the working bracket, thus fixing the position of the drive motor. The output shaft of the drive motor is directly and fixedly connected to one end of the drive shaft, and the other end is fixedly connected to the drive gear.

[0015] In the aforementioned non-standard spiral bending mechanism, the contact point between the conical presser and the fan-shaped bending die can be rounded.

[0016] In the aforementioned non-standard spiral bending mechanism, multiple fan-shaped bending dies can be provided.

[0017] In the aforementioned non-standard spiral bending mechanism, the guide clamp can be configured as a replaceable clamp.

[0018] The aforementioned non-standard spiral bending mechanism features a concave design on the worktable surface, the shape of which conforms to the contour formed by the meshing drive gear and driven gear; the bottom end of the concave design can be fitted with a guide groove according to the movement trajectory of the expansion roller and the rotating roller.

[0019] The beneficial effects of this utility model are that the non-standard spiral bending mechanism adopts a ring structure composed of several fan-shaped bending dies that can expand and contract. When the conical presser presses down, while the conical presser moves vertically downward, it applies a horizontal radial force to the fan-shaped bending die. After being subjected to force, the expanding roller drives the fan-shaped bending die to move along the direction of the radial force. The simultaneous movement of several fan-shaped bending dies can increase the outer diameter of the ring structure, thereby realizing the adjustment of the radius of the profile to be bent. There is no need to prepare and replace bending dies of different specifications, which improves bending efficiency and reduces processing costs.

[0020] The inclusion of expansion rollers and rotating rollers reduces friction between the bending die assembly and the annular worktable assembly and the worktable surface; the position of the guide clamp is adjustable and its specifications are replaceable, making it suitable for fixing positions of different profile shapes and specifications to be bent. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 A 3D structural diagram of the supporting components;

[0023] Figure 3 A three-dimensional structural diagram of the conical press assembly, the bending die assembly, and the annular worktable assembly;

[0024] Figure 4 for Figure 3 A cross-sectional view along the EF direction.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Support components; 101. Workbench surface; 102. Work support;

[0027] 2. Conical presser assembly; 201. Variable diameter rod; 202. Variable diameter rod nut; 203. Conical presser;

[0028] 3. Bending die assembly; 301. Fan-shaped bending die; 302. Expanding roller; 303. End clamp; 304. First fixing screw;

[0029] 4. Circular worktable assembly; 401. Circular worktable; 402. T-shaped guide groove; 403. Guide clamp; 404. Second fixing screw; 405. Driven gear; 406. Gear partition; 407. Fixing block; 408. Rotating roller;

[0030] 5. Drive components; 501. Drive motor; 502. Motor bracket; 503. Drive shaft; 504. Drive gear. Detailed Implementation

[0031] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0032] like Figure 1 As shown, a non-standard spiral bending mechanism includes a support assembly 1, a conical presser assembly 2, a bending die assembly 3, an annular worktable assembly 4, and a drive assembly 5. The conical presser assembly 2, the bending die assembly 3, and the annular worktable assembly 4 are all located directly above the support assembly 1 horizontally, and all three share the same reference axis. They are radially distributed along this reference axis, with the conical presser assembly 2 located on the inner side, the annular worktable assembly 4 on the outer side, and the bending die assembly 3 located between the two. The drive assembly 5 is located to the side of the support assembly 1.

[0033] like Figure 2 As shown, the support assembly 1 includes a worktable 101 and a work support 102, wherein the worktable 101 is designed to be recessed; the work support 102 is fixedly connected below the worktable 101. The support assembly 1 is used to support the entire non-standard spiral bending mechanism.

[0034] like Figure 2-4 As shown, the conical presser assembly 2 includes a variable diameter rod 201, which is placed perpendicular to the worktable surface 101 and its bottom end is fixedly connected to the upper surface of the worktable surface 101. A variable diameter rod nut 202 and a conical presser 203 are movably connected to the variable diameter rod 201, and the variable diameter rod nut 202 is located directly above the conical presser 203 horizontally. By rotating the variable diameter rod nut 202, its horizontal height can be changed, which can constrain the height of the conical presser 203. The conical presser 203 can be moved along the vertical direction of the variable diameter rod 201 by rotating clockwise or counterclockwise.

[0035] The bending die assembly 3 includes several fan-shaped bending dies 301, and these fan-shaped bending dies 301 share the same reference axis as the variable diameter rod 201. The fan-shaped bending dies 301 form a ring structure that can expand and contract. Each fan-shaped bending die 301 is stepped, that is, each fan-shaped bending die 301 is divided into an upper half and a lower half, and the two parts share the same reference axis. The outer diameter of the upper half of the fan-shaped bending die 301 is larger than the outer diameter of the lower half. The bottom end of the lower half is provided with an expansion roller 302. When the ring structure formed by the fan-shaped bending dies 301 expands and contracts, it avoids direct contact between the fan-shaped bending dies 301 and the worktable surface 101, thereby reducing frictional loss. When the conical presser 203 presses down, it applies a horizontal radial force to the fan-shaped bending die 301 while moving vertically downward. After being subjected to the force, the expansion roller 302 drives the fan-shaped bending die 301 to move along the direction of the radial force. The simultaneous movement of several fan-shaped bending dies 301 can increase the outer diameter of the ring mechanism, thereby realizing the adjustment of the radius of the profile to be bent.

[0036] One of the fan-shaped bending dies 301 has an end clamp 303 installed on the side of the upper half of the die. The end clamp 303 is equipped with two first fixing screws 304. The end clamp 303 and the upper half of the fan-shaped bending die 301 are clamped and fixed at one end of the steel by adjusting the first fixing screws 304.

[0037] The annular worktable assembly 4 includes an annular worktable 401, which is mounted on the worktable surface 101. The annular worktable 401 and the variable diameter rod 201 share the same reference axis. The height of the annular worktable 401 is the same as the lower half of the fan-shaped bending mold 301, and the diameter of the hollowed-out part in the middle of the annular worktable 401 is the same as the outer diameter of the annular structure formed by the fan-shaped bending mold 301 when it is not expanded.

[0038] A T-shaped guide groove 402 is provided on the upper surface of the annular worktable 401. The guiding direction of the T-shaped guide groove 402 is from the center of the annular worktable 401 to the outer diameter edge. A guide clamp 403 is movably connected to the T-shaped guide groove 402. The guide clamp 403 passes through the guide groove and constrains the profile to be bent on the annular worktable 401. The two sides of the profile to be bent are respectively in close contact with the bending die and the clamp. The guide clamp 403 has a second fixing screw 404. By loosening the second fixing screw 404, the guide clamp 403 can move along the T-shaped guide groove 402. By tightening the second fixing screw 404, the relative position of the guide clamp 403 and the annular worktable 401 can be fixed.

[0039] The lower surface of the annular worktable 401 is engraved with gear teeth, which form a driven gear 405. A gear partition 406 is located directly above the driven gear 405. The gear partition 406 is fixedly connected to the worktable surface 101 by several fixing blocks 407 to prevent debris from falling into the driven gear 405 and interfering with the operation of the mechanism. Several rotating rollers 408 are fixedly connected below the driven gear 405. When the driven gear 405 is driven to rotate, it drives the annular worktable 401 to rotate. The rotating rollers 408 can prevent the driven gear 405 from directly contacting the worktable surface 101, reducing friction loss.

[0040] The drive assembly 5 includes a drive motor 501, a motor bracket 502, a drive shaft 503, and a drive gear 504. The drive motor 501 is fixedly connected to the motor bracket 502, which is fixedly connected to the working bracket 102, thus fixing the position of the drive motor 501. The output shaft of the drive motor 501 is directly and fixedly connected to one end of the drive shaft 503, and the other end is fixedly connected to the drive gear 504. When the drive motor 501 is working, its output shaft drives the drive shaft 503 to rotate, which in turn drives the drive gear 504 to rotate. The drive gear 504 meshes with the driven gear 405, and the rotation of the drive gear 504 drives the driven gear 405 to rotate, thereby bending the profile to be bent after the end is fixed.

[0041] The contact point between the conical presser 203 and the fan-shaped bending die 301 can be rounded to reduce the damage to both due to friction when the conical presser 203 presses down.

[0042] Multiple fan-shaped bending dies 301 can be set, but no fewer than three, so that the annular structure formed by the fan-shaped bending dies 301 tends to be a circle during the expansion movement, thereby improving the processing accuracy of the profile to be bent.

[0043] The guide fixture 403 can be configured as a replaceable fixture, and different specifications of guide fixture 403 can be matched according to the specifications of the profile to be bent to be processed.

[0044] The worktable 101 has a concave design, the shape of which fits the contour formed by the meshing drive gear 504 and driven gear 405; the bottom of the concave design has a guide groove according to the movement trajectory of the expansion roller 302 and the rotating roller 408, so that the expansion roller 302 and the rotating roller 408 move along the guide groove and avoid relative displacement.

[0045] In operation, the required bending radius of the profile to be bent is first determined. Then, the annular structure composed of several fan-shaped bending dies 301 is adjusted to the required radius using a rotating conical presser 203. Next, a matching guide clamp 403 is replaced according to the specifications of the profile. The profile to be bent is fed onto the upper surface of the annular worktable 401. One end of the profile is clamped onto the fan-shaped bending die 301 using an end clamp 303. The position of the guide clamp 403 is then adjusted so that both sides of the profile are in contact with the fan-shaped bending die 301 and the guide clamp 403, respectively. The drive motor 501 operates, driving the drive shaft 503 to rotate. The drive shaft 503 drives the drive gear 504 to rotate, which in turn drives the driven gear 405 to rotate, thereby rotating the annular worktable 401. Under the pressure of the guide clamp 403, the profile to be bent is processed into a bent profile with the required radius.

[0046] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any variations that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A non-standard spiral bending mechanism, comprising a support assembly (1), a conical presser assembly (2), a bending die assembly (3), an annular worktable assembly (4), and a drive assembly (5), characterized in that, The conical press assembly (2), the bending die assembly (3), and the annular worktable assembly (4) are all located directly above the support assembly (1) at a horizontal level, with the bending die assembly (3) located between the conical press assembly (2) and the annular worktable assembly (4), and the drive assembly (5) located to the side of the support assembly (1). The conical presser assembly (2) includes a variable diameter rod (201), which is fixed and perpendicular to the worktable surface (101). A variable diameter rod nut (202) and a conical presser (203) located directly above the variable diameter rod nut (202) are movably connected to the variable diameter rod (201). The bending die assembly (3) includes several fan-shaped bending dies (301), and the several fan-shaped bending dies (301) are on the same reference axis as the variable diameter rod (201). Each fan-shaped bending die (301) is stepped, that is, each fan-shaped bending die (301) is divided into an upper half die and a lower half die, and the outer diameter of the upper half die is larger than the outer diameter of the lower half die. An expansion roller (302) is provided at the bottom of the lower half die.

2. The non-standard spiral bending mechanism as described in claim 1, characterized in that, One of the fan-shaped bending dies (301) has an end clamp (303) installed on the upper half of the die side, and the end clamp (303) is equipped with two first fixing screws (304).

3. A non-standard spiral bending mechanism as described in claim 1, characterized in that, The annular worktable assembly (4) includes an annular worktable (401), which is mounted on the worktable surface (101). The annular worktable (401) and the variable diameter rod (201) share the same reference axis. The height of the annular worktable (401) is the same as the lower half of the fan-shaped bending mold (301), and the diameter of the hollow part in the middle of the annular worktable (401) is the same as the outer diameter of the annular structure formed by the fan-shaped bending mold (301) when it is not expanded.

4. A non-standard spiral bending mechanism as described in claim 3, characterized in that, A T-shaped guide groove (402) is provided on the upper surface of the annular worktable (401). A guide clamp (403) is movably connected to the T-shaped guide groove (402). The guide clamp (403) passes through the guide groove to constrain the profile to be bent on the annular worktable (401). A second fixing screw (404) is movably connected to the guide clamp (403).

5. A non-standard spiral bending mechanism as described in claim 4, characterized in that, The lower surface of the annular worktable (401) is engraved with gear teeth, which constitute a driven gear (405). A gear partition (406) is provided directly above the driven gear (405) horizontally. The gear partition (406) is fixedly connected to the worktable surface (101) through several fixing blocks (407). Several rotating rollers (408) are fixedly connected below the driven gear (405).

6. A non-standard spiral bending mechanism as described in claim 1, characterized in that, The drive assembly (5) includes a drive motor (501), a motor bracket (502), a drive shaft (503), and a drive gear (504). The drive motor (501) is fixedly connected to the motor bracket (502), and the motor bracket (502) is fixedly connected to the working bracket (102) to fix the position of the drive motor (501). The output shaft of the drive motor (501) is directly fixedly connected to one end of the drive shaft (503), and the other end is fixedly connected to the drive gear (504).

7. A non-standard spiral bending mechanism as described in claim 1, characterized in that, The contact point between the conical presser (203) and the fan-shaped bending die (301) is rounded.

8. A non-standard spiral bending mechanism as described in claim 1, characterized in that, No fewer than three fan-shaped bending dies (301) are provided.

9. A non-standard spiral bending mechanism as described in claim 4, characterized in that, The guide fixture (403) is configured as a replaceable fixture.

10. A non-standard spiral bending mechanism as described in claim 1, characterized in that, The worktable (101) has a concave design that conforms to the contour formed by the meshing drive gear (504) and driven gear (405). The bottom of the concave design has a guide groove according to the movement trajectory of the expansion roller (302) and the rotating roller (408).

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