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CN-224222425-U - Bent pipe forming mechanism

CN224222425UCN 224222425 UCN224222425 UCN 224222425UCN-224222425-U

Abstract

The utility model discloses a bent pipe forming mechanism which comprises a forming die and a pushing mechanism, wherein the pushing mechanism is arranged opposite to the forming die, the pushing end of the pushing mechanism is aligned to a forming cavity of the forming die and is used for driving a hollow pipe to be bent to enter the forming cavity, the pushing mechanism comprises a pushing driver and a pushing pipe piece, a bent pipe core is movably arranged in the forming cavity and comprises a straight line section and a bent section, and the pushing pipe piece can drive the pipe to be bent to be sleeved into the bent pipe core and move along the paths of the straight line section and the bent section so as to realize the gradual bending forming of the pipe. The automatic pipe bending machine can realize automatic continuous pushing, one-by-one forming and automatic discharging of pipes and complete continuous pipe bending operation, thereby remarkably improving production efficiency.

Inventors

  • ZHOU JIAYIN
  • LIU SHENGQI

Assignees

  • 浙江嘉达机械制造有限公司

Dates

Publication Date
20260512
Application Date
20260414

Claims (5)

  1. 1. The bent pipe forming mechanism comprises a forming die (1) and a pushing mechanism (2), wherein the pushing mechanism (2) is arranged opposite to the forming die (1), the pushing end of the pushing mechanism (2) is opposite to a forming cavity of the forming die (1) and is used for driving a hollow pipe (8) to be bent to enter the forming cavity, the pushing mechanism (2) comprises a pushing driver and a pushing pipe piece (4), and the bent pipe forming mechanism is characterized in that a bent pipe core (5) is movably arranged in the forming cavity, the bent pipe core (5) comprises a straight line section (6) and a bent section (7), and the pushing pipe piece (4) can drive the pipe (8) to be bent to be sleeved into the bent pipe core (5) and move along paths of the straight line section (6) and the bent section (7) so as to realize one-by-one bent forming of the pipe (8).
  2. 2. The elbow molding mechanism according to claim 1, wherein at least the pushing end of the pushing pipe fitting (4) is of a hollow tubular structure.
  3. 3. The pipe bending mechanism as claimed in claim 1 or 2, wherein the pushing end of the pushing pipe (4) is provided with a concave portion (10) or a convex portion (11), and the concave portion (10) or the convex portion (11) is engaged with the end portion of the pipe (8) to be bent during pushing so as to limit circumferential rotation during feeding of the pipe (8) to be bent.
  4. 4. The pipe bending forming mechanism according to claim 1, further comprising a positioning seat (9), wherein the positioning seat (9) is arranged between the forming die (1) and the pushing mechanism (2), a positioning space for accommodating the pipe to be bent (8) is formed in the positioning seat (9), the pushing pipe fitting (4) can stretch back and forth relative to the positioning space, and the pipe to be bent (8) in the positioning space is pushed to the forming die (1) under the driving of the pushing driver.
  5. 5. The bent pipe forming mechanism according to claim 1, wherein the forming die (1) comprises an upper die (14) and a lower die (3), an upper forming groove is formed in the lower surface of the upper die (14), a lower forming groove is formed in the upper surface of the lower die (3), and the upper forming groove and the lower forming groove jointly enclose the forming cavity when the upper die (14) and the lower die (3) are clamped.

Description

Bent pipe forming mechanism Technical Field The utility model relates to the technical field of pipe processing equipment, in particular to a bent pipe forming mechanism. Background The bent pipe forming is a common procedure in pipe processing and is widely applied to the fields of automobiles, aerospace, furniture, pipeline engineering and the like. For bending and forming of small-diameter and thin-wall pipes, a mode of punching bent pipes or winding and bending and the like is generally adopted. In the existing pipe bending forming process, after bending forming of one pipe is completed each time, a formed pipe is usually taken out of a die manually or by a mechanical arm, and then the next straight pipe to be bent is put into a die cavity to perform the next pipe bending operation. The intermittent production mode cannot realize automatic continuous pushing and one-by-one forming of the pipe, so that the production efficiency is low. Disclosure of utility model The utility model aims to overcome the defects and the shortcomings of the prior art and provides a bent pipe forming mechanism. The bent pipe forming mechanism comprises a forming die and a pushing mechanism, wherein the pushing mechanism is arranged opposite to the forming die, the pushing end of the pushing mechanism is opposite to a forming cavity of the forming die and is used for driving a hollow pipe to be bent to enter the forming cavity, the pushing mechanism comprises a pushing driver and a pushing pipe piece, a bent pipe core is movably arranged in the forming cavity and comprises a straight line section and a bent section, and the pushing pipe piece can drive the pipe to be bent to be sleeved into the bent pipe core and move along a path of the straight line section and the bent section of the bent pipe to realize the gradual bending forming of the pipe. By adopting the technical scheme, the bent pipe with the straight line section and the bent section is arranged, the bent pipe is sleeved on the bent section of the bent pipe in advance, and the outer wall of the bent pipe is matched with the inner wall of the forming cavity, so that the bent pipe is integrally suspended in the forming cavity. The straight line section of the bending tube core is used for guiding the material to be bent to enter, and the bending section is sleeved by the formed tube material, so that the bending tube core is precisely suspended and positioned in the radial direction under the combined action of the straight line section of the bending tube core and the formed tube material, and meanwhile, the circumferential rotation of the bending tube core is limited by the nesting relationship between the straight line section of the bending tube core and the material to be bent, and the axial movement of the bending tube core is limited by the axial constraint (such as the geometric limit of a bending path) of the bending tube material on the bending section. Thereby, the bending core always keeps stable position and posture in the continuous pushing process. On the basis, a forming gap matched with the wall thickness of the material to be bent is formed between the outer wall of the pipe bending core and the inner wall of the forming cavity, the pushing mechanism drives the material to be bent to enter the gap along the straight line section and move along the bending section, the pipe is formed in a one-by-one bending mode, and each formed pipe is automatically replaced by the previous pipe to be sleeved on the bending section of the pipe bending core. The automatic pipe bending machine can realize automatic continuous pushing, one-by-one forming and automatic discharging of the pipe, complete continuous pipe bending operation, and do not need manual or mechanical hand to take and put the pipe, thereby remarkably improving the production efficiency, simultaneously having ingenious structure and reducing the equipment cost. As a preferable technical scheme of the utility model, at least the pushing end of the pushing pipe piece is of a hollow tubular structure. By adopting the technical scheme, the material pushing device is convenient to butt joint with the material to be bent, so that stable pushing is realized. As a preferable technical scheme of the utility model, the pushing end of the pushing pipe fitting is provided with a concave part or a convex part, and the concave part or the convex part is jogged with the end part of the material to be bent during pushing so as to limit circumferential rotation in the feeding process of the material to be bent. Through adopting above-mentioned technical scheme, set up depressed part or bulge at the pushing away material end of pushing away material pipe spare, this depressed part or bulge and wait that the tip of return bend material is gomphosis mutually during the material to effectively restrict the circumference rotation of tubular product in the pay-off in-process, this structure can ensure that tubular product