Bent pipe fitting mandrel cutting device

Abstract

The utility model relates to a bent pipe fitting mandrel cutting device which comprises a bent pipe feeding assembly, a bent pipe clamping assembly and a mandrel cutting assembly. The mandrel cutting assembly comprises a mandrel cutting longitudinal sliding rail, a mandrel cutting longitudinal sliding base, a mandrel cutting longitudinal moving air cylinder, a mandrel cutting frame plate, a mandrel cutting press-cutting air cylinder, a mandrel cutting press-cutting plate, a mandrel cutting upper press-cutting piece and a mandrel cutting lower top press-cutting piece. A bent pipe is fed to the front end of the bent pipe clamping assembly through the bent pipe feeding assembly and clamped. A mandrel cutting longitudinal moving air cylinder drives a mandrel cutting longitudinal sliding base to move towards a bent pipe fitting, a mandrel cutting press-cutting air cylinder drives a mandrel cutting frame plate upwards, a mandrel cutting press-cutting plate is made to press downwards under the hinged connection effect of the mandrel cutting press-cutting plate and the mandrel cutting frame plate, and a mandrel cutting upper press-cutting piece is made to press downwards towards a mandrel cutting lower press-cutting piece in a matched mode. Therefore, the overall vibration is small, the deformation of the cut surface of the mandrel is small, and the cutting quality of the mandrel can be effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of pipe bending equipment technology, and in particular to a mandrel cutting device for pipe bending. Background Technology

[0002] Heating elements need to be processed into different shapes to facilitate the assembly and use of different types and structures of electrical appliances. A heating element consists of a copper tube and a mandrel inside the copper tube. The final processing of the heating element generally requires bending, end trimming, and inspection. For bending, commonly used methods include wrapping, pushing, rolling, and pressing. After bending, the end face of the bent tube needs to be cut to expose the mandrel, forming the connecting end. The length of the connecting end formed by the mandrel also needs to be controlled. Currently, existing equipment typically involves holding or clamping the bent tube and using a downward-pressing cylinder to drive a cutter to cut the mandrel directly from top to bottom. While this achieves the purpose of cutting the mandrel, the high impact force during cutting causes overall vibration and deformation of the cut surface. Furthermore, the broken mandrel fragments, affecting the quality of the mandrel cutting. Utility Model Content

[0003] The purpose of this utility model is to provide a mandrel cutting device for bending pipes. It removes excess sections of the mandrel by lifting the hinged mandrel cutting pressure plate upward and then pressing down the upper mandrel cutting pressure plate. This results in less overall vibration and less deformation of the mandrel cutting surface, which can effectively improve the cutting quality of the mandrel.

[0004] To solve the above-mentioned technical problems, the present invention provides a mandrel cutting device for bending pipes, comprising a bending pipe feeding assembly, a bending pipe clamping assembly below the bending pipe feeding assembly, a mandrel cutting assembly at the front end of the bending pipe clamping assembly, the mandrel cutting assembly including a mandrel cutting longitudinal slide rail, a mandrel cutting longitudinal slide block on the mandrel cutting longitudinal slide rail, a mandrel cutting longitudinal moving cylinder connected to the rear end of the mandrel cutting longitudinal slide block, a mandrel cutting frame plate at the front end of the mandrel cutting longitudinal slide block, a mandrel cutting pressure cylinder at the rear end of the mandrel cutting longitudinal slide block, a mandrel cutting pressure plate hinged between the output end of the mandrel cutting pressure cylinder and the mandrel cutting frame plate, the mandrel cutting pressure plate and the mandrel cutting frame plate being connected by a mandrel cutting vertical slide rail and a mandrel cutting vertical slider, an upper mandrel cutting cutting slice connected to the lower end of the mandrel cutting pressure plate, and a lower mandrel cutting slice corresponding to the upper mandrel cutting cutting slice on the mandrel cutting longitudinal slide block.

[0005] Preferably, the pipe bending clamping assembly includes a pipe bending clamping cutting seat, a pipe bending clamping cutting longitudinal movement motor is provided at the rear end of the pipe bending clamping cutting seat, a pipe bending clamping push block is provided at the output end of the pipe bending clamping cutting longitudinal movement motor, and a pipe bending clamping movable clamping plate is provided at the front end of the pipe bending clamping push block.

[0006] More preferably, the curved tube feeding assembly includes a curved tube feeding transverse motor, the output end of which is connected to a curved tube feeding transverse shaft, a curved tube feeding transverse frame is provided on the curved tube feeding transverse shaft, a curved tube feeding longitudinal cylinder is provided on the curved tube feeding transverse frame, the output end of the curved tube feeding longitudinal cylinder is connected to a curved tube feeding longitudinal frame, a curved tube feeding longitudinal clamping cylinder is provided at the front end of the curved tube feeding longitudinal frame, and two curved tube feeding clamping blocks are provided at the output end of the curved tube feeding clamping cylinder.

[0007] The beneficial effects of this utility model are as follows: It includes a pipe bending feeding assembly, below which is a pipe bending clamping assembly. A mandrel cutting assembly is fitted at the front end of the pipe bending clamping assembly. The mandrel cutting assembly includes a mandrel cutting longitudinal slide rail, on which a mandrel cutting longitudinal slide block is fitted. A mandrel cutting longitudinal moving cylinder is connected to the rear end of the mandrel cutting longitudinal slide block. A mandrel cutting frame plate is provided at the front end of the mandrel cutting longitudinal slide block, and a mandrel cutting pressure cylinder is provided at the rear end. A mandrel cutting pressure plate is hinged between the output end of the mandrel cutting pressure cylinder and the mandrel cutting frame plate. The mandrel cutting pressure plate and the mandrel cutting frame plate are connected via a mandrel cutting vertical slide rail and a mandrel cutting vertical slider. A mandrel cutting upper pressure slice is connected to the lower end of the mandrel cutting pressure plate. The mandrel cutting longitudinal slide block... The system is equipped with a lower mandrel cutting blade that works in conjunction with the upper mandrel cutting blade. During operation, the bent pipe is first fed to the front end of the bent pipe clamping assembly via the bent pipe feeding assembly and then clamped by the bent pipe clamping assembly. Next, the longitudinal moving cylinder of the mandrel cutting blade drives the longitudinal sliding block, the mandrel cutting pressure cylinder, the mandrel cutting pressure plate, and the upper mandrel cutting blade to move together toward the bent pipe. Finally, the mandrel cutting pressure cylinder drives the mandrel cutting frame plate upwards, causing the mandrel cutting pressure plate to press downwards under the hinged connection with the mandrel cutting frame plate. This, in turn, causes the upper mandrel cutting blade to press downwards in conjunction with the lower mandrel cutting blade, thus cutting off the excess mandrel portion at the end of the bent pipe. By lifting the hinged mandrel cutting pressure plate upwards and then pressing down the upper mandrel cutting blade, the excess mandrel section is removed. This results in minimal overall vibration and deformation of the mandrel cutting surface, effectively improving the quality of mandrel cutting. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of this utility model.

[0009] Figure 2This is a structural schematic diagram of the feeding component, the unloading component, and the center positioning component of this utility model. Detailed Implementation

[0010] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0011] like Figure 1 , 2 As shown, a mandrel cutting device for bending pipes includes a pipe bending feeding assembly 1, a pipe bending clamping assembly 2 below the pipe bending feeding assembly 1, a mandrel cutting assembly 3 at the front end of the pipe bending clamping assembly 2, the mandrel cutting assembly 3 including a mandrel cutting longitudinal slide rail 31, a mandrel cutting longitudinal slide block 32 fitted on the mandrel cutting longitudinal slide rail 31, a mandrel cutting longitudinal moving cylinder 33 connected to the rear end of the mandrel cutting longitudinal slide block 32, and the mandrel cutting longitudinal moving cylinder 33 moving forward on the mandrel cutting longitudinal slide block 32. The mandrel cutting frame plate 34 is provided at one end. A mandrel cutting pressure cylinder 35 is provided at the upper rear end of the mandrel cutting longitudinal slide 32. A mandrel cutting pressure plate 36 is hinged between the output end of the mandrel cutting pressure cylinder 35 and the mandrel cutting frame plate 34. The mandrel cutting pressure plate 36 and the mandrel cutting frame plate 34 are connected by a mandrel cutting vertical slide rail and a mandrel cutting vertical slider. A mandrel cutting upper pressure slice 37 is connected to the lower end of the mandrel cutting pressure plate 36. The mandrel cutting longitudinal slide has a... A mandrel cutting lower cutting slice 38 should be provided to cooperate with the mandrel cutting upper pressure slice 37. During operation, the bent pipe is first fed to the front end of the bent pipe clamping assembly 2 through the bent pipe feeding assembly 1 and clamped by the bent pipe clamping assembly 2. Then, the mandrel cutting longitudinal moving cylinder 33 drives the mandrel cutting longitudinal slide 32, the mandrel cutting pressure cutting cylinder 35, the mandrel cutting pressure cutting plate 36, and the mandrel cutting upper pressure slice 37 to move together toward the bent pipe. Finally, the mandrel cutting upper pressure slice 38 is driven upward by the mandrel cutting cylinder 35. The cutting frame plate 34 causes the mandrel cutting pressure plate 36 to press downward under the hinged connection with the mandrel cutting frame plate 34, and the upper mandrel cutting pressure slice 37 to press down in conjunction with the lower mandrel cutting pressure slice 38. This can cut off the excess mandrel part at the end of the bent pipe. By lifting the hinged mandrel cutting pressure plate 36 upward, and then pressing the upper mandrel cutting pressure slice 37 down in conjunction with the lower mandrel cutting pressure slice 38, the excess section of the mandrel is removed. In this way, the overall vibration is small, the deformation of the mandrel cut surface is small, and the cutting quality of the mandrel can be effectively improved.

[0012] In this embodiment, the bent pipe feeding assembly 1 includes a bent pipe feeding transverse motor 11. The output end of the bent pipe feeding transverse motor 11 is connected to a bent pipe feeding transverse shaft. A bent pipe feeding transverse frame is provided on the bent pipe feeding transverse shaft. A bent pipe feeding longitudinal cylinder 12 is provided on the bent pipe feeding transverse frame. The output end of the bent pipe feeding longitudinal cylinder 12 is connected to a bent pipe feeding longitudinal frame. A bent pipe feeding longitudinal clamping cylinder 13 is provided at the front end of the bent pipe feeding longitudinal frame. Two bent pipes are provided at the output end of the bent pipe feeding clamping cylinder. The feeding clamping block 14 first drives the bending pipe feeding transverse movement motor 11 to drive the bending pipe feeding transverse movement frame, bending pipe feeding longitudinal movement cylinder 12, bending pipe feeding longitudinal movement frame, bending pipe feeding longitudinal movement clamping cylinder 13, and two bending pipe feeding clamping blocks 14 to clamp the bending pipe part after the left end face is cut, and move it laterally towards the bending pipe clamping and cutting assembly. Then, the bending pipe part is clamped longitudinally towards the bending pipe clamping assembly 2 by the bending pipe feeding longitudinal movement cylinder 12, bending pipe feeding longitudinal movement frame, bending pipe feeding longitudinal movement clamping cylinder 13, and two bending pipe feeding clamping blocks 14.

[0013] In this embodiment, the pipe bending clamping assembly 2 includes a pipe bending clamping cutting seat 21. The rear end of the pipe bending clamping cutting seat 21 is provided with a pipe bending clamping cutting longitudinal movement motor 22. The output end of the pipe bending clamping cutting longitudinal movement motor 22 is provided with a pipe bending clamping push block 23. The front end of the pipe bending clamping push block 23 is provided with a pipe bending clamping movable clamping plate 24. When the pipe bending moves to the pipe bending clamping assembly 2, the pipe bending clamping push block 23 and the pipe bending clamping movable clamping plate 24 are driven by the pipe bending clamping cutting longitudinal movement motor 22 to move towards the pipe bending clamping fixed clamping plate 25. The pipe bending component is clamped by the cooperation of the pipe bending clamping movable clamping plate 24 and the pipe bending clamping fixed clamping plate 25.

[0014] Based on the concept of this utility model, there may be changes in the specific implementation methods and application scope. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A mandrel cutting device for bending pipes, characterized in that: The device includes a pipe bending feeding assembly, a pipe bending clamping assembly below the pipe bending feeding assembly, a mandrel cutting assembly at the front end of the pipe bending clamping assembly, a mandrel cutting assembly including a mandrel cutting longitudinal slide rail, a mandrel cutting longitudinal slide block on the mandrel cutting longitudinal slide rail, a mandrel cutting longitudinal moving cylinder connected to the rear end of the mandrel cutting longitudinal slide block, a mandrel cutting frame plate at the front end of the mandrel cutting longitudinal slide block, a mandrel cutting pressure cylinder at the rear end of the mandrel cutting longitudinal slide block, a mandrel cutting pressure plate hinged between the output end of the mandrel cutting pressure cylinder and the mandrel cutting frame plate, the mandrel cutting pressure plate and the mandrel cutting frame plate being connected by a mandrel cutting vertical slide rail and a mandrel cutting vertical slider, a mandrel cutting upper pressure slice connected to the lower end of the mandrel cutting pressure plate, and a mandrel cutting lower top slice corresponding to the mandrel cutting upper pressure slice on the mandrel cutting longitudinal slide block.

2. The mandrel cutting device for bending pipes according to claim 1, characterized in that: The pipe bending clamping assembly includes a pipe bending clamping cutting seat, a pipe bending clamping cutting longitudinal movement motor is provided at the rear end of the pipe bending clamping cutting longitudinal movement motor, a pipe bending clamping push block is provided at the output end of the pipe bending clamping cutting longitudinal movement motor, and a pipe bending clamping movable clamping plate is provided at the front end of the pipe bending clamping push block.

3. The mandrel cutting device for bending pipes according to claim 1, characterized in that: The curved tube feeding assembly includes a curved tube feeding transverse motor, the output end of which is connected to a curved tube feeding transverse shaft, a curved tube feeding transverse frame on the curved tube feeding transverse shaft, a curved tube feeding longitudinal cylinder on the curved tube feeding transverse frame, the output end of which is connected to a curved tube feeding longitudinal frame, a curved tube feeding longitudinal clamping cylinder at the front end of the curved tube feeding longitudinal frame, and two curved tube feeding clamping blocks at the output end of the curved tube feeding clamping cylinder.

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