An elliptical ring-shaped high-strength aluminum electric power fitting and pipe bending device and process

Abstract

The present invention relates to an elliptical annular high-strength aluminum electric power fitting bending device, which includes an axial pusher, a clamping part, a rotary die and a workbench, the rotary die can be rotatably installed on one side of the workbench, the clamping part can be installed on one side of the rotary die and rotate synchronously with the rotary die, the axial pusher is installed on one side of the clamping part and the axial pusher is tangent to the outer circle of the rotary die, the rotary die includes an upper die and a lower die, the lower end of the upper die is designed as a 1 / 4 circular arc groove of an annular shape, the upper end of the lower die is designed as a 1 / 4 circular arc groove of an annular shape, the upper die is installed on the lower die to form an integral body, the circular arc groove of the lower die is butt-jointed with the circular arc groove of the upper die to form an annular semicircular arc groove, and a crescent-shaped notch is designed on the upper end of the upper die; a horizontal block is installed on the workbench, and the height of the upper end face of the horizontal block is the same as the bottom height of the annular semicircular arc groove. The advantage is that the problem that the whole annular body cannot be demoulded is solved by improving the rotary die, and the raw materials (liner) that must be used due to increasing the welding strength are reduced, so that the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the field of electric power fittings processing, and in particular to an elliptical ring-shaped high-strength aluminum electric power fitting and a pipe bending device and process. Background Art

[0002] The original production process of the voltage-equalizing ring in the power transmission engineering: the ring body drawing requires R250,600*700, the total length of the ring body is 1940, the product welding seam should be flush with the pipe surface, the weld should be smooth and free of burrs after grinding and polishing, and the pipe surface should not have obvious scars and other defects.

[0003] In the past, according to the product structure and the traditional equipment equipped by our company for ring bending, the bent pipe must be divided into two 970 aluminum tubes and bent separately, and then the two semicircular rings are welded. The ring of the previous product needs to be welded at two points. At the two welding points, in order to ensure the strength of the middle section of the ring after welding, the inside of the aluminum tube must be reinforced with a liner as required, and the two bent rings must be connected by drilling and pinning, and then welded and polished. It costs a total of 4.95 yuan to produce such a product according to the drawing requirements.

[0004] The defects of this processing technology and mold are: 1. It is impossible to complete the processing of the semicircular rings at both ends at one time, so that the ring body has an extra weld seam, an extra liner, and an extra drilling, pinning, and grinding process. 2. The mold of the original process can only bend fan-shaped products less than 180 degrees during the production process. When the bent tubular product is greater than 180 degrees, it cannot be smoothly demolded. Forcing the demolding will damage the bending curvature. For example, the rotating mold of the tube bending mechanism disclosed in patent CN100491010C cannot solve the above problems. Summary of the invention

[0005] In order to solve the above technical problems, the present invention proposes an elliptical ring-shaped high-strength aluminum power fitting and a pipe bending device and process.

[0006] The design is clever, the use is convenient, and it is easy to demould after being bent into an elliptical ring shape.

[0007] The technical solution of the present invention:

[0008] The invention discloses an elliptical annular high-strength aluminum electric hardware pipe bending device, which comprises an axial push part, a clamping part, a rotary die and a workbench. The rotary die can be rotatably installed on one side of the workbench, the clamping part can be installed on one side of the rotary die and can rotate synchronously with the rotary die, the axial push part is installed on one side of the clamping part and the axial push part is tangent to the outer circle of the rotary die, the rotary die comprises an upper die and a lower die, the lower end of the upper die is designed to be a 1 / 4 circular arc groove of an annular shape, the upper end of the lower die is designed to be a 1 / 4 circular arc groove of an annular shape, the upper die is installed on the lower die to form an integral body, the circular arc groove of the lower die is butt-jointed with the circular arc groove of the upper die to form an annular semicircular arc groove, and a crescent-shaped notch is designed on the upper end of the upper die; a horizontal block is installed on the workbench, and the height of the upper end surface of the horizontal block is the same as the bottom height of the annular semicircular arc groove.

[0009] The diameter of the crescent-shaped notch is 1 / 4 to 1 / 3 of the diameter of the upper die; the end face of the crescent-shaped notch is perpendicular to the axis of the clamping part; and the length of the horizontal block is greater than the diameter of the rotary die.

[0010] The upper mold and the lower mold can be cast in one piece.

[0011] The invention discloses an elliptical ring-shaped high-strength aluminum electric hardware. The elliptical ring-shaped high-strength aluminum electric hardware is formed by using the elliptical ring-shaped high-strength aluminum electric hardware bending device. The elliptical ring-shaped high-strength aluminum electric hardware comprises an elliptical ring-shaped tube. The elliptical ring-shaped tube is an aluminum tube directly bent into an elliptical ring shape. The two ends of the aluminum tube are butt-jointed by welding.

[0012] A process for bending an elliptical ring-shaped high-strength aluminum electric power fittings, which is a process for processing an elliptical ring-shaped high-strength aluminum electric power fittings using the elliptical ring-shaped high-strength aluminum electric power fittings bending device:

[0013] 1) Select the aluminum tube of specified length as required.

[0014] 2) One end of the aluminum tube is clamped by the clamping head of the clamping part and matched with the annular semi-circular groove of the rotary die, and half the length of the waist of the elliptical ring-shaped high-strength aluminum electrical hardware is reserved at the end of the aluminum tube. The lower end of the other end of the aluminum tube is supported by a horizontal block, and the arc groove of the shaft push part is pushed on one side of the aluminum tube to ensure that the aluminum tube is tangent to the annular semi-circular groove of the rotary die.

[0015] 3) Bending: The rotary die is driven by a rotary drive mechanism, and the clamping part rotates synchronously with the rotary die to ensure that the clamping part and the rotary die clamp the aluminum tube for bending. The shaft pusher cooperates with the conveying aluminum tube to move synchronously along the tangent direction tangent to the annular semicircular arc groove of the rotary die until the aluminum tube is bent 180 degrees along the rotary die. The clamping part releases the clamping, removes the bent aluminum tube, and resets the clamping part, the rotary die and the shaft pusher. The other end of the aluminum tube is clamped with the annular semicircular arc groove of the rotary die through the clamping head of the clamping part, and half the length of the waist of the elliptical ring-shaped high-strength aluminum power fitting is reserved at the end of the aluminum tube. The lower end of the semicircle after bending at the other end of the aluminum tube is adjusted to a horizontal level by a horizontal block support, and the arc groove of the shaft pusher pushes on one side of the aluminum tube to be bent, and then bends 180 degrees again to complete the elliptical ring-shaped tube bending, and the two ends of the aluminum tube are just butt-jointed.

[0016] 4) Unload the material, loosen and tighten the clamping part, and the shaft push part also retreats. The elliptical ring-shaped tube is horizontally rotated 180 degrees and removed from the crescent-shaped notch of the upper mold of the rotating mold. The bending process is completed.

[0017] 5) Welding: weld and polish the joints of the aluminum tube.

[0018] The advantage of the present invention is that the problem that the entire circular ring body cannot be demoulded is solved by improving the rotating mold, while also reducing the workload of bending, welding and grinding, reducing the phenomenon of burrs and bumps in the production process, and reducing the raw materials (liners) required for increasing the welding strength, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the present invention.

[0020] Figure 2 It is a side view of the present invention.

[0021] Figure 3 It is a schematic diagram of the elliptical ring-shaped high-strength aluminum electric power fitting of the present invention. DETAILED DESCRIPTION

[0022] Refer to the attached Figure 1-2, an elliptical annular high-strength aluminum power hardware bending device, which includes an axial push part 1, a clamping part 2, a rotary die 3 and a workbench 4, the rotary die 3 can be rotatably installed on one side of the workbench 4, the clamping part 2 can be installed on one side of the rotary die 3 and rotate synchronously with the rotary die 3, the axial push part 1 is installed on one side of the clamping part 2 and the axial push part 1 is tangent to the outer circle of the rotary die 3, the rotary die 3 includes an upper die and a lower die, the lower end of the upper die is designed to be a 1 / 4 circular arc groove of an annular shape, the upper end of the lower die is designed to be a 1 / 4 circular arc groove of an annular shape, the upper die is installed on the lower die to form an integral body, the circular arc groove of the lower die is connected with the circular arc groove of the upper die to form an annular semi-circular arc groove 32, and a crescent-shaped notch 31 is designed on the upper end of the upper die; a horizontal block 5 is installed on the workbench 4, and the height of the upper end surface of the horizontal block 5 is the same as the bottom height of the annular semi-circular arc groove 32. Figure 1 is a simplified schematic diagram of the present invention.

[0023] The diameter of the crescent-shaped notch 31 is 1 / 4 to 1 / 3 of the diameter of the upper die; the end face of the crescent-shaped notch 31 is perpendicular to the axis of the clamping part 2; the length of the horizontal block 5 is greater than the diameter of the rotary die 3. The crescent-shaped notch is cleverly designed, and a small improvement is made to the rotary die, which solves the problem that the ellipse cannot be removed after being bent into a circle. The crescent-shaped notch design does not affect the bending of the semicircular shape. After forming a circle, it can be removed from the notch. The horizontal block design solves the problem that the two semicircles of the circle are not in the same horizontal plane. After bending, the joints are in the same plane, and the parallelism meets the processing requirements. There is no need to correct the connection through the liner and then weld it. In this way, the joints are directly connected and can be directly welded, eliminating the liner.

[0024] The upper mold and the lower mold can be cast in one piece.

[0025] like Figure 3 An elliptical ring-shaped high-strength aluminum electrical hardware is manufactured by using the elliptical ring-shaped high-strength aluminum electrical hardware bending device. The elliptical ring-shaped high-strength aluminum electrical hardware includes an elliptical ring-shaped tube 7. The elliptical ring-shaped tube 7 is an aluminum tube directly bent into an elliptical ring shape, and the two ends of the aluminum tube are butt-jointed 6 by welding.

[0026] A process for bending an elliptical ring-shaped high-strength aluminum electric power fittings, which is a process for processing an elliptical ring-shaped high-strength aluminum electric power fittings using the elliptical ring-shaped high-strength aluminum electric power fittings bending device:

[0027] 1) Select the aluminum tube of specified length as required.

[0028] 2) One end of the aluminum tube is clamped by the clamping head of the clamping part 2 and the annular semi-circular groove 32 of the rotary die 3, and half the length of the waist of the elliptical ring-shaped high-strength aluminum electrical hardware is reserved at the end of the aluminum tube. The lower end of the other end of the aluminum tube is supported by the horizontal block 5, and the arc groove of the shaft push part 1 is pushed on one side of the aluminum tube to ensure that the aluminum tube is tangent to the annular semi-circular groove 32 of the rotary die 3.

[0029] 3) Bending, the rotary die 3 is driven to rotate by the rotary drive mechanism, and the clamping part 2 rotates synchronously with the rotary die 3 to ensure that the clamping part 2 and the rotary die 3 clamp the aluminum tube for bending, and the shaft push part 1 cooperates with the conveying aluminum tube to synchronously advance along the tangent direction tangent to the annular semicircular arc groove 32 of the rotary die 3 until the aluminum tube is bent 180 degrees along the rotary die 3; the clamping part 2 is released and the bent aluminum tube is removed, and the clamping part 2, the rotary die 3 and the shaft push part 1 are reset, and then the other end of the aluminum tube is clamped with the annular semicircular arc groove 32 of the rotary die 3 through the clamping head of the clamping part 2, and half the length of the waist of the elliptical ring-shaped high-strength aluminum power fitting is reserved at the end of the aluminum tube. The lower end of the semicircle after the other end of the aluminum tube is bent is supported and adjusted to the level by the horizontal block 5, and the arc groove of the shaft push part 1 is pushed on one side of the aluminum tube to be bent, and it is bent 180 degrees again to complete the elliptical ring-shaped tube bending, and the two ends of the aluminum tube are just butted.

[0030] 4) Unclamp the clamping part 2, and the push part 1 also moves back. The elliptical ring-shaped tube is horizontally rotated 180 degrees and removed from the crescent-shaped notch 31 of the upper die of the rotating die 3. The bending process is completed.

[0031] 5) Welding: weld and polish the joints of the aluminum tube.

[0032] The design of the present invention improves the equipment and the mold through the above-mentioned improvements. In the past, an elliptical product required two aluminum tubes to be bent into two semicircles, and then combined and welded. Two butt joints were lined with liner tubes to adjust the parallelism of the two semicircles and facilitate welding of the butt joints to form a full circle. The present invention now only requires one aluminum tube to be bent into a circle and a butt joint is welded, and no liner tube is required to adjust the parallelism and assist in welding. In comparison, the present invention has one less step of sawing a whole aluminum tube into two equal sections from the beginning of cutting, and there is only one butt joint later, which reduces one welding step. At the same time, both sides do not need the step of lining and leveling the liner tube. A total of 4 steps are saved, and two liner tubes and materials for welding on one side are also saved. The processing time is greatly shortened, the overall weight of the product is also reduced, and the structural strength is also guaranteed. It saves steps, saves materials, improves production efficiency, saves costs, and has small improvements with outstanding effects. The problem of the whole ring body being unable to be demoulded is solved, and the workload of bending, welding and grinding is also reduced, the phenomenon of bumps and scratches in the production process is reduced, and the raw materials (liners) required to increase welding strength are reduced, so that production efficiency is improved. From the current situation, at least 2 yuan is saved for each set of products (pressure equalizing rings) of the company. According to statistics, 11,300 sets were produced in 2018, 8,700 sets were produced in 2019, and 10,000 sets were produced in 2020, saving the company at least 60,000 yuan in total.

Claims

1. A process for bending an elliptical ring-shaped high-strength aluminum electrical fittings, characterized in that: The process is a process for processing elliptical ring-shaped high-strength aluminum power hardware by using an elliptical ring-shaped high-strength aluminum power hardware bending device; the elliptical ring-shaped high-strength aluminum power hardware includes an elliptical ring-shaped tube, which is an aluminum tube directly bent into an elliptical ring shape, and the two ends of the aluminum tube are butt-jointed by welding; the elliptical ring-shaped high-strength aluminum power hardware bending device includes an axial push part, a clamping part, a rotary die and a workbench, the rotary die can be rotatably mounted on one side of the workbench, the clamping part can be mounted on one side of the rotary die synchronously with the rotary die, the axial push part is mounted on one side of the clamping part and the axial push part is tangent to the outer circle of the rotary die, and is characterized in that the rotary die includes an upper The upper die and the lower die are designed to be a 1 / 4 circular arc groove at the lower end of the upper die, and the upper end of the lower die is designed to be a 1 / 4 circular arc groove at the upper end of the lower die. The upper die is installed on the lower die to form an integral body. The circular arc groove of the lower die is connected with the circular arc groove of the upper die to form an annular semi-circular arc groove. A crescent-shaped notch is designed on the upper end of the upper die. A horizontal block is installed on the workbench, and the height of the upper end face of the horizontal block is the same as the bottom height of the annular semi-circular arc groove. The diameter occupied by the size of the crescent-shaped notch is 1 / 4 to 1 / 3 of the diameter of the upper die. The end face of the crescent-shaped notch is perpendicular to the axis of the clamping part. The length of the horizontal block is greater than the diameter of the rotating die. The upper die and the lower die can be cast as one piece. The specific process is as follows: 1) Select the aluminum tube of specified length according to your needs; 2) One end of the aluminum tube is clamped by the clamping head of the clamping part and matched with the annular semi-circular groove of the rotary die, and half the length of the waist of the elliptical ring-shaped high-strength aluminum power fitting is reserved at the end of the aluminum tube. The lower end of the other end of the aluminum tube is supported by a horizontal block, and the arc groove of the shaft push part is pushed on one side of the aluminum tube to ensure that the aluminum tube is tangent to the annular semi-circular groove of the rotary die; 3) Bending: The rotary die is driven by a rotary drive mechanism, and the clamping part rotates synchronously with the rotary die to ensure that the clamping part and the rotary die clamp the aluminum tube for bending. The shaft pusher cooperates with the conveying aluminum tube to synchronously advance along the tangent direction tangent to the annular semicircular arc groove of the rotary die until the aluminum tube is bent 180 degrees along the rotary die; the clamping part releases the clamping, removes the bent aluminum tube, and resets the clamping part, the rotary die and the shaft pusher. The other end of the aluminum tube is clamped with the annular semicircular arc groove of the rotary die through the clamping head of the clamping part, and half the length of the waist of the elliptical ring-shaped high-strength aluminum power fitting is reserved at the end of the aluminum tube. The lower end of the semicircle after bending at the other end of the aluminum tube is supported by a horizontal block to adjust the level, and the arc groove of the shaft pusher pushes on one side of the aluminum tube to be bent, and then bends 180 degrees again to complete the elliptical ring-shaped tube bending, and the two ends of the aluminum tube are just butted; 4) Unload the material, loosen and tighten the clamping part, and the shaft push part also retreats. The elliptical ring-shaped tube is horizontally rotated 180 degrees and removed from the crescent-shaped notch of the upper die of the rotating die. The bending process is completed; 5) Welding: weld and polish the joints of the aluminum tube.

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