A bellows hydraulic edge trim device

Abstract

The utility model discloses a corrugated pipe hydraulic edge cutting device, and its hydraulic workstation and lower table are fixed on the workbench respectively, the upper table is fixed in the upper of lower table through the circular column, the slider table is set between the upper table and lower table, and the four corners are through the circular column, the oil cylinder is fixed on the upper table, and its oil inlet is connected with the hydraulic workstation, and its piston rod is connected with the slider table vertically downward, the upper die assembly of punch die is installed on the lower surface of slider table, and the lower die assembly is installed on the lower table, the cylinder is installed on the lower table, and its piston rod is arranged horizontally and is connected with the slider cutter of lower die assembly. The utility model discloses adopt hydraulic punching mode, and utilize precision mould to punch once, and the cutting surface is smooth and has no burr, greatly improves the product pass rate, guarantees the follow -up welding quality, and the punching action is quick, and the punching efficiency is high, is suitable for batch production, and the practicality is strong.

Description

Technical Field

[0001] This utility model relates to the field of pipe processing equipment, and in particular to a corrugated pipe hydraulic trimming device for trimming the ends of corrugated pipes. Background Technology

[0002] A bellows is a tubular elastic sensing element made of foldable corrugated sheets connected along the folding and stretching direction. Bellows are widely used in instrumentation, primarily as measuring elements in pressure gauges, converting pressure into displacement or force. During the manufacturing process, the ends of the formed bellows are usually trimmed to ensure a flat end face, facilitating subsequent connection and welding.

[0003] Currently, the trimming of bellows ends is generally done by turning. This traditional method has the following obvious defects and shortcomings: Low processing efficiency: Turning is a cutting process, which involves clamping, setting tools, and cutting one piece at a time. The production cycle is long and the efficiency is low, making it difficult to meet the needs of mass production.

[0004] High processing costs: The equipment takes a long time to operate, consumes a lot of electricity, and requires certain skills from the operators, resulting in high overall production costs.

[0005] Poor processing quality: Due to the thin wall of the corrugated pipe, deformation and vibration are easily generated during machining, resulting in burrs and unevenness on the end face of the product after trimming. These burrs and unevenness will seriously affect the subsequent welding quality, causing quality problems such as incomplete welds and missing welds, and reducing the overall reliability of the product. Utility Model Content

[0006] This invention provides a bellows hydraulic trimming device, which can solve the problems of low efficiency, high cost and poor product surface quality in traditional machining methods.

[0007] To solve the above-mentioned technical problems, this utility model provides a bellows hydraulic trimming device, comprising: Workbench, hydraulic workstation, oil cylinder, upper table, lower table, slide table, stamping die and air cylinder; The hydraulic workstation and the lower platform are respectively fixed on the worktable; The upper platform is fixed above the lower platform by a circular column, and the top and bottom ends of the circular column are fixedly connected to the upper platform and the lower platform, respectively. The slider platform is positioned between the upper and lower platforms; the four corners of the slider platform penetrate the circular column. The oil cylinder is fixed on the upper platform, its oil inlet is connected to the hydraulic workstation, and its piston rod is vertically downward connected to the slider platform to drive the slider platform to move up and down along the circular column; The stamping die includes an upper die assembly and a lower die assembly. The upper die assembly is mounted on the lower surface of the slide block, and the lower die assembly is mounted on the lower block. The cylinder is mounted on the lower platform, with its piston rod arranged horizontally and connected to the slider cutter of the lower mold assembly. It is used to drive the slider cutter to move horizontally, thereby opening and closing the mold cavity of the lower mold assembly.

[0008] In a preferred embodiment of this utility model, the upper mold assembly includes an upper mold base, an upper pad, an upper clamping plate, an upper template, and a punch; The upper die holder is installed on the lower surface of the slider table, the upper pad is fixed below the upper die holder, the punch is installed below the upper pad, and the upper clamping plate and the upper template are arranged sequentially from top to bottom, together covering and fixing the side wall of the punch.

[0009] In a preferred embodiment of this utility model, the lower mold assembly includes a lower mold base, a lower pad, and a template pad; The lower mold base is installed on the lower platform, and the lower pad and the template pad are stacked on the lower mold base from bottom to top; The lower mold assembly also includes a fixing block and a slider cutter that form the mold cavity; the fixing block is fixedly installed on the template pad, and the slider cutter is movably disposed on the template pad and connected to the piston rod of the cylinder; the fixing block and the slider cutter are respectively provided with matching semi-circular arc structures on opposite sides, which together form an annular mold cavity for clamping the bellows when they are closed. The cylinder drives the slider cutter to slide horizontally relative to the fixed block, thereby opening and closing the mold cavity.

[0010] In a preferred embodiment of the present invention, the device further includes a stroke controller, which is signal-connected to the hydraulic cylinder and the pneumatic cylinder.

[0011] In a preferred embodiment of the present invention, the device further includes a safety light curtain, which is installed on the side of the lower platform and is signal-connected to the travel controller.

[0012] In a preferred embodiment of the present invention, the device further includes a cylinder sensor, which is mounted on the edge of the fixed block facing the slider cutter and connected to the stroke controller.

[0013] In a preferred embodiment of the present invention, the upper mold assembly further includes a stripper plate, which is movably connected below the upper mold plate by an elastic element.

[0014] The beneficial effects of this utility model are as follows: This utility model provides a corrugated pipe hydraulic edge cutting device. Through the design of a hydraulic workstation, oil cylinder, upper table, lower table, slider table, stamping die, and cylinder, it adopts a hydraulic punching method and uses a precision die for one-time punching. The cut surface is flat and burr-free, which greatly improves the product qualification rate, ensures the subsequent welding quality, and the punching action is rapid and efficient. It is suitable for mass production and has strong practicality. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of a preferred embodiment of a bellows hydraulic trimming device of the present invention; Figure 2 yes Figure 1 A top-view structural diagram; Figure 3 yes Figure 1 A schematic diagram of the side view structure; Figure 4 This is a schematic diagram of the stamping die in the closed state. Figure 5 This is a schematic diagram of the stamping die in the open state. Figure 6 This is a top view of the lower mold assembly. The components in the attached diagram are labeled as follows: 1. Workbench, 2. Hydraulic workstation, 3. Oil cylinder, 4. Upper table, 5. Lower table, 6. Slider table, 7. Stamping die, 8. Cylinder, 9. Circular column, 10. Stroke controller, 11. Safety light curtain, 12. Cylinder sensor, 13. Bellows, 71. Upper die assembly, 72. Lower die assembly, 711. Upper die base, 712. Upper backing plate, 713. Punch, 714. Upper clamping plate, 715. Upper template, 716. Stripper plate, 721. Lower die base, 722. Lower backing plate, 723. Template backing plate, 724. Fixing block, 725. Slider cutter. Detailed Implementation

[0016] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0017] Please see Figure 1-3This utility model discloses a bellows hydraulic trimming device, including: a workbench 1, a hydraulic workstation 2, an oil cylinder 3, an upper table 4, a lower table 5, a slider table 6, a stamping die 7, and an air cylinder 8.

[0018] The device uses a workbench 1 as its mounting base. The hydraulic workstation 2 and the lower platform 5 are fixed to the workbench 1 with bolts. The upper platform 4 is connected to the lower platform 5 by four circular columns 9, forming a stable rigid frame. The two ends of each circular column 9 are fixedly connected to the upper platform 4 and the lower platform 5, respectively.

[0019] The slider platform 6 is located between the upper platform 4 and the lower platform 5. The four corners of the slider platform 6 are respectively penetrated by the circular pillars 9, which also serve as guide rods to provide vertical guidance for the slider platform 6.

[0020] The hydraulic cylinder 3 is fixed to the center of the upper platform 4 via a flange. Its oil inlet is connected to the hydraulic workstation 2 via a high-pressure oil pipe. Its piston rod extends vertically downward and is threadedly connected to the center of the slider platform 6. The hydraulic workstation 2 provides power to the hydraulic cylinder 3, driving the slider platform 6 to reciprocate up and down along the circular column 9.

[0021] like Figure 3-6 As shown, the stamping die 7 includes an upper die assembly 71 and a lower die assembly 72. The upper die assembly 71 is mounted on the lower surface of the slide block 6, and the lower die assembly 72 is mounted on the lower platform 5.

[0022] Specifically, the upper die assembly 71 includes an upper die base 711, an upper backing plate 712, a punch 713, an upper clamping plate 714, an upper template 715, and a stripper plate 716. The upper die base 711 is mounted on the lower surface of the slider table 6, the upper backing plate 712 is fixed below the upper die base 711, and the punch 713 is bolted to the lower surface of the upper backing plate 712. The upper clamping plate 714 and the upper template 715 are arranged sequentially from top to bottom and together cover and fix the sidewall of the punch 713. The stripper plate 716 is movably connected to the lower surface of the upper template 715 by a spring (not shown in the figure) to achieve automatic stripping during the punching return stroke.

[0023] The lower mold assembly 72 includes a lower mold base 721, a lower pad 722, a template pad 723, a fixing block 724 forming the mold cavity, and a slider cutter 725.

[0024] The lower mold base 721 is mounted on the lower platform 5, and the lower pad 722 and the template pad 723 are stacked sequentially on the lower mold base 721 from bottom to top. The fixing block 724 is bolted to the template pad 723, and the slider cutter 725 is movably mounted on the template pad 723. The fixing block 724 and the slider cutter 725 each have a matching semi-circular arc structure on their opposite sides, which together form an annular mold cavity for clamping the bellows when they are closed.

[0025] The cylinder 8 is mounted on the lower platform 5, and its piston rod is horizontally connected to the slider cutter 725 via a connector. It is used to drive the slider cutter 725 to move horizontally, thereby opening and closing the mold cavity in the lower mold assembly.

[0026] The device also includes a stroke controller 10, a safety light curtain 11, and a cylinder sensor 12. The stroke controller 10 is signal-connected to the hydraulic cylinder 3, the air cylinder 8, the safety light curtain 11, and the cylinder sensor 12.

[0027] The safety light curtain 11 is installed on the operating side of the lower platform 5, and its signal output terminal is connected to the stroke controller 10. When the light curtain is blocked by a hand or other object, the stroke controller 10 will immediately stop the hydraulic cylinder to ensure safety.

[0028] The cylinder sensor 12 is a magnetic switch or a proximity sensor, which is installed on the edge of the fixed block 724 near the slider cutter 725. Its signal output terminal is connected to the stroke controller 11 to detect whether the slider cutter 725 is fully closed in place.

[0029] The working process or principle of this utility model is as follows: Initial state: Hydraulic cylinder 3 is in the return state, slide block 6 is at the top dead center, and upper mold assembly 71 is raised. The piston rod of cylinder 8 retracts, driving slide cutter 725 to open, and the mold cavity of the lower mold is in the open state.

[0030] Loading: The operator vertically places the corrugated pipe 13 to be cut into the mold cavity of the lower mold assembly 72, so that the cutting end abuts against the template pad 723.

[0031] Mold Closing: Press the cylinder start button, and the stroke controller 10 controls the cylinder 8 to move. The piston rod of the cylinder extends, pushing the slider cutter 725 towards the fixed block 724 until it is fully closed. After the cylinder sensor 12 detects the closing position signal, it sends it to the stroke controller 10.

[0032] Punching: When the operator presses the button when the safety light curtain 11 is unobstructed, the stroke controller 10, after receiving the signal that the cylinder 8 has closed to the correct position and the safety signal is normal, starts the hydraulic workstation 2, controls the piston rod of the oil cylinder 3 to move downward, driving the slide block 6 and the entire upper die assembly 71 to press down. The stripper plate 726 first contacts and flattens the end of the bellows 13, and then the punch 713 moves down, cooperating with the annular cavity of the lower die to complete the precision punching of the end of the bellows 13.

[0033] Return stroke and mold opening: After punching is completed, the stroke controller 10 controls the hydraulic cylinder 3 to reverse the return stroke, and the upper mold assembly 71 is lifted. The stripper plate 716 completes stripping under the action of the spring. After the upper mold is fully reset, the stroke controller 10 controls the cylinder 8 to reverse the direction, the piston rod retracts, and pulls the slider cutter 725 backward to open the mold cavity.

[0034] Material handling: The operator takes out the finished corrugated pipe with the edges cut, and one work cycle is completed.

[0035] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A bellows hydraulic trimming device, characterized in that, include: Workbench, hydraulic workstation, oil cylinder, upper table, lower table, slide table, stamping die and air cylinder; The hydraulic workstation and the lower platform are respectively fixed on the worktable; The upper platform is fixed above the lower platform by a circular column, and the top and bottom ends of the circular column are fixedly connected to the upper platform and the lower platform, respectively. The slider platform is positioned between the upper and lower platforms; the four corners of the slider platform penetrate the circular column. The oil cylinder is fixed on the upper platform, its oil inlet is connected to the hydraulic workstation, and its piston rod is vertically downward connected to the slider platform to drive the slider platform to move up and down along the circular column; The stamping die includes an upper die assembly and a lower die assembly. The upper die assembly is mounted on the lower surface of the slide block, and the lower die assembly is mounted on the lower block. The cylinder is mounted on the lower platform, with its piston rod arranged horizontally and connected to the slider cutter of the lower mold assembly. It is used to drive the slider cutter to move horizontally, thereby opening and closing the mold cavity of the lower mold assembly.

2. The bellows hydraulic trimming device according to claim 1, characterized in that, The upper mold assembly includes an upper mold base, an upper pad, an upper clamping plate, an upper template, and a punch; The upper die holder is installed on the lower surface of the slider table, the upper pad is fixed below the upper die holder, the punch is installed below the upper pad, and the upper clamping plate and the upper template are arranged sequentially from top to bottom, together covering and fixing the side wall of the punch.

3. The bellows hydraulic trimming device according to claim 1, characterized in that, The lower mold assembly includes a lower mold base, a lower pad, and a template pad; The lower mold base is installed on the lower platform, and the lower pad and the template pad are stacked on the lower mold base from bottom to top; The lower mold assembly also includes a fixing block and a slider cutter that form the mold cavity; the fixing block is fixedly installed on the template pad, and the slider cutter is movably disposed on the template pad and connected to the piston rod of the cylinder; the fixing block and the slider cutter are respectively provided with matching semi-circular arc structures on opposite sides, which together form an annular mold cavity for clamping the bellows when they are closed. The cylinder drives the slider cutter to slide horizontally relative to the fixed block, thereby opening and closing the mold cavity.

4. The bellows hydraulic trimming device according to claim 3, characterized in that, The device also includes a stroke controller, which is signal-connected to the hydraulic cylinder and the pneumatic cylinder.

5. A bellows hydraulic trimming device according to claim 4, characterized in that, The device also includes a safety light curtain, which is installed on the side of the lower platform and is signal-connected to the travel controller.

6. A bellows hydraulic trimming device according to claim 4, characterized in that, The device also includes a cylinder sensor mounted on the edge of the fixed block facing the slider cutter and connected to the stroke controller.

7. A bellows hydraulic trimming device according to claim 2, characterized in that, The upper mold assembly also includes a stripper plate, which is movably connected to the lower part of the upper mold plate via an elastic element.

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