Split type elbow pipe core rod device

Abstract

A split type elbow pipe core rod device belongs to the technical field of elbow pipes for automobile part machining and is characterized by comprising a connecting device and a fixing device inserted in the circle center of the left side surface of the connecting device, a protection device is inserted in the periphery of the outer side surface of the fixing device, and a movable rolling ball is inserted in the middle of the left side surface of the fixing device. A protective chuck is connected to the middle of the right side of the side surface of the movable rolling ball, a fixing groove is formed in the edge of the outer side of the right side surface of the protective chuck, and a fixing open groove is formed in the circle center of the left side surface of the protective chuck, so that smooth transition forming is more convenient during pipe bending, and a pipe body is not prone to quality defects such as deformation, small diameter or breakage; therefore, the purposes of improving product quality, shortening raw materials and reducing cost are achieved.

Description

Technical field:

[0001] The utility model belongs to the technical field of pipe bending equipment for automobile parts processing, and specifically relates to a split pipe bending mandrel device. Background technology:

[0002] At present, there are basically two types of mandrels used in pipe bending machines in the industry: one is an integrated structure, which is not conducive to pipe bending and has a high failure rate.

[0003] The other is split, with the core rod body being a cylindrical structure. The rod body is relatively long and, affected by the working principle of the equipment, a certain interference and avoidance distance must be reserved, which wastes raw materials. The ball head part is relatively short, that is, there are two ball heads, and the distance between the ball heads is large. When bending the pipe, the support of the ball head in the pipe is not smooth enough. When in use, the appearance of the pipe will appear wavy to varying degrees, and in severe cases, the pipe body will appear thin or broken. Utility model content:

[0004] In view of the above problems, the mandrel body is shortened and a split structure is adopted. The front half is the original mandrel diameter, and the diameter of the rear half is reduced to a size that can be inserted into the feed clamp. When bending the tube, the internal support area of ​​the tube is increased, and the distance between the connecting ball heads is reduced. When bending the tube, it is easier to smoothly transition and form the tube. The tube body is not prone to quality defects such as deformation, thin diameter or breakage. The technical solution is as follows:

[0005] A split tube bending mandrel device, characterized in that it comprises a connecting device 1 and a fixing device 2 inserted at the center of the left surface of the connecting device 1, a protective device 3 is inserted around the outer surface of the fixing device 2, a movable rolling ball 4 is inserted in the middle of the left surface of the fixing device 2, a protective chuck 5 is connected to the middle of the right side of the side surface of the movable rolling ball 4, a fixing groove 6 is provided at the outer edge of the right side surface of the protective chuck 5, a fixing slot 7 is provided at the center of the left side surface of the protective chuck 5, and the connecting device 1 The fixing device 2 comprises a core rod 1-1, a threaded opening 1-2, a block 1-3 and a slot 1-4. The core rod 1-1 has a threaded opening 1-2 at the center of the side surface. The block 1-3 is connected to the center of the left side surface of the core rod 1-1. A slot 1-4 is provided in the middle of the left side surface of the block 1-3. The outer surface of the core rod 1-1 is in a stepped shape. The block 1-3 is in a cylindrical shape. The fixing device 2 comprises a clamping column 2-1, a through hole 2-2, a connecting hole 2-3 and a tapered hole 2-4. The clamping column 2-1 has a side surface center. A through hole 2-2 is provided at the center of the left side surface of the through hole 2-2, a connecting hole 2-3 is provided at the center of the left side surface of the card column 2-1, a tapered hole 2-4 is provided at the center of the left side surface of the card column 2-1, the inside of the tapered hole 2-4 and the inside of the through hole 2-2 are connected to each other by the connecting hole 2-3, the side surface of the connecting hole 2-3 is in an arc shape, and the side surface of the through hole 2-2 is in a stepped shape, the card block 1-3 is inserted into the through hole 2-2, the position of the slot 1-4 corresponds to the position of the connecting hole 2-3, and the protective device The device 3 includes an outer cover 3-1, a right cavity 3-2, a left cavity 3-3 and an insert ring 3-4. The right cavity 3-2 is provided at the center of the right edge of the outer cover 3-1, and the left cavity 3-3 is provided at the center of the left edge of the outer cover 3-1. The insert ring 3-4 is connected to the edges around the left surface of the outer cover 3-1. The insert ring 3-4 is conical in shape. The clamping column 2-1 is inserted into the left cavity 3-3, and the core rod 1-1 is inserted into the right cavity 3-2. The insert ring 3-4 cooperates with the fixing groove 6.

[0006] The beneficial effects of the utility model are: increasing the internal support area of ​​the tube when bending the tube, reducing the distance between the connecting ball heads, facilitating smooth transition forming when bending the tube, and preventing the tube body from being easily deformed, thin in diameter or broken, thereby achieving the purpose of improving product quality, reducing raw materials and lowering costs. Description of the drawings:

[0007] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0008] Figure 2 It is a structural schematic diagram of the connecting device 1 of the utility model;

[0009] Figure 3 It is a structural schematic diagram of the fixing device 2 of the utility model;

[0010] Figure 4 It is a schematic diagram of the structure of the protective device 3 of the utility model;

[0011] In the figure: connecting device 1, fixing device 2, protective device 3, movable ball 4, protective chuck 5, fixing groove 6, fixing slot 7, core rod 1-1, threaded mouth 1-2, block 1-3, slot 1-4, card column 2-1, through hole 2-2, connecting hole 2-3, tapered hole 2-4, outer cover 3-1, right cavity 3-2, left cavity 3-3, plug ring 3-4. Specific implementation method:

[0012] Reference Figure 1 Figure 2 Figure 3 Figure 4 The split-type pipe bending mandrel device is characterized in that it includes a connecting device 1 and a fixing device 2 inserted at the center of the left surface of the connecting device 1, a protective device 3 is inserted around the outer surface of the fixing device 2, a movable rolling ball 4 is inserted in the middle of the left surface of the fixing device 2, a protective chuck 5 is connected to the middle of the right side of the side surface of the movable rolling ball 4, a fixing groove 6 is provided at the outer edge of the right side surface of the protective chuck 5, and a fixing slot 7 is provided at the center of the left side surface of the protective chuck 5. The device 1 includes a core rod 1-1, a threaded opening 1-2, a block 1-3 and a slot 1-4. The core rod 1-1 has a threaded opening 1-2 at the center of the side surface. The center of the left side surface of the core rod 1-1 is connected to a block 1-3. The middle of the left side surface of the block 1-3 is provided with a slot 1-4. The outer surface of the core rod 1-1 is in a stepped shape. The block 1-3 is in a cylindrical shape. The fixing device 2 includes a clamping column 2-1, a through hole 2-2, a connecting hole 2-3 and a tapered hole 2-4. The clamping column 2-1 has a side surface circle. A through hole 2-2 is provided at the center of the left side surface of the through hole 2-2, a connecting hole 2-3 is provided at the center of the left side surface of the card column 2-1, a tapered hole 2-4 is provided at the center of the left side surface of the card column 2-1, the inside of the tapered hole 2-4 and the inside of the through hole 2-2 are connected to each other by the connecting hole 2-3, the side surface of the connecting hole 2-3 is in an arc shape, the side surface of the through hole 2-2 is in a stepped shape, the card block 1-3 is inserted into the through hole 2-2, the position of the slot 1-4 corresponds to the position of the connecting hole 2-3, and the protective The device 3 includes an outer cover 3-1, a right cavity 3-2, a left cavity 3-3 and an insert ring 3-4. The right cavity 3-2 is provided at the center of the right edge of the outer cover 3-1, and the left cavity 3-3 is provided at the center of the left edge of the outer cover 3-1. The insert ring 3-4 is connected to the edges around the left surface of the outer cover 3-1. The insert ring 3-4 is conical in shape. The clamping column 2-1 is inserted into the left cavity 3-3, and the core rod 1-1 is inserted into the right cavity 3-2. The insert ring 3-4 cooperates with the fixing groove 6.

[0013] When in use, first insert the core rod 1-1 on the connecting pillar 1 into the clamping column 2-1 on the fixing device 2, and make the clamping block 1-3 clamped in the through hole 2-2, and align the slot 1-4 with the connecting hole 2-3, then penetrate the core rod 1-1 through the left cavity 3-3 and the right cavity 3-2 on the protective device 3 to make the clamping column 2-1 clamped in the left cavity 3-3, and then penetrate the movable ball 4 through the tapered hole 2-4 and the connecting hole 2-3 and insert it into the slot 1-4, and then insert the movable ball 4 on the second protective chuck 5 into the center of the rear surface of the front protective chuck 5, and connect an appropriate number of protective chucks 5 according to the above method, and finally, when bending, the fixed groove 6 on the frontmost protective chuck 5 cooperates with the insert ring 3-4, and at the same time, the fixed groove 7 on the front protective chuck 5 cooperates with the fixed groove 6 on the rear protective chuck 5 to achieve maximum bending.

[0014] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A split tube bending mandrel device, characterized in that: The invention comprises a connecting device (1) and a fixing device (2) inserted at the center of the left side surface of the connecting device (1); a protective device (3) is inserted around the outer surface of the fixing device (2); a movable rolling ball (4) is inserted in the middle of the left side surface of the fixing device (2); a protective chuck (5) is connected to the middle of the right side surface of the movable rolling ball (4); a fixing groove (6) is provided at the outer edge of the right side surface of the protective chuck (5); and a fixing notch (7) is provided at the center of the left side surface of the protective chuck (5).

2. A split tube bending mandrel device according to claim 1, characterized in that: The connecting device (1) comprises a core rod (1-1), a threaded opening (1-2), a clamping block (1-3) and a slot (1-4); the core rod (1-1) has a threaded opening (1-2) at the center of a side surface; the clamping block (1-3) is connected to the center of a left side surface of the core rod (1-1); the slot (1-4) is provided in the middle of a left side surface of the clamping block (1-3); the outer side surface of the core rod (1-1) is in a stepped shape; and the clamping block (1-3) is in a cylindrical shape.

3. A split tube bending mandrel device according to claim 2, characterized in that: The fixing device (2) comprises a clamping column (2-1), a through hole (2-2), a connecting hole (2-3) and a tapered hole (2-4); the clamping column (2-1) has a through hole (2-2) at the center of a side surface; the connecting hole (2-3) is provided at the center of a left side surface of the through hole (2-2); the clamping column (2-1) has a tapered hole (2-4) at the center of a left side surface; the inside of the tapered hole (2-4) and the inside of the through hole (2-2) are connected to each other by the connecting hole (2-3); the side surface of the connecting hole (2-3) is in an arc shape; the side surface of the through hole (2-2) is in a stepped shape; the clamping block (1-3) is inserted into the through hole (2-2); the position of the slot (1-4) corresponds to the position of the connecting hole (2-3).

4. A split tube bending mandrel device according to claim 3, characterized in that: The protective device (3) comprises an outer cover (3-1), a right cavity (3-2), a left cavity (3-3) and an insert ring (3-4); the right cavity (3-2) is provided at the center of the right edge of the outer cover (3-1); the left cavity (3-3) is provided at the center of the left edge of the outer cover (3-1); the insert ring (3-4) is connected to the edges of the left surface of the outer cover (3-1); the insert ring (3-4) is in a conical shape; the clamping column (2-1) is inserted into the left cavity (3-3); the core rod (1-1) is inserted into the right cavity (3-2); and the insert ring (3-4) cooperates with the fixing groove (6).

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