A ball screw return pipe bender

Abstract

The application relates to the technical field of pipe benders, in particular to a ball screw return pipe bender, which comprises a die frame, a recess is formed in the die frame, a half die is arranged in the recess through a hinged structure, and an arc surface is arranged on the inner side of the half die; a lower limit die cavity is formed in the inner side arc surface of the half die; the half die and the die frame are provided with elastic members A for resetting the half die; an upper die is arranged between the two half dies; an upper die cavity corresponding to the lower limit die cavity is formed in the outer surface of the upper die; the upper die is provided with a movable plate; the movable plate is provided with a guide column; the guide column is connected with the die frame in the vertical direction; the movable plate is fixedly provided with a power mechanism for driving the movable plate to move up and down; when the return pipe is bent, the return pipe can directly coincide with the cavity formed between the upper die cavity and the lower limit die cavity, the return pipe can be accurately positioned during the bending process, the deviation phenomenon can be avoided, the product quality can be ensured, and the product qualification rate can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipe bender, in particular to a ball screw return pipe bender. BACKGROUND

[0002] Ball screw is the most commonly used transmission element in tooling machinery and precision machinery, its main function is to convert rotary motion into linear motion, or to convert torque into axial repeated force, while having high precision, reversibility and high efficiency. The return pipe (also known as the guide pipe) of the ball screw is mainly used to ensure the internal circulation of the nut, prevent the ball from falling off, and maintain the efficient operation of the ball screw.

[0003] The pipe bending die of Chinese patent application No. 201510714889.4 includes a support plate, the support plate is provided with a setting groove, two rotating half-molds are symmetrically arranged in the setting groove with the vertical center line of the setting groove, the opposite sides of the two rotating half-molds are both inner arc surfaces with the same curvature, the bending part of the pipe is formed between the two inner arc surfaces, an upper die holder capable of moving up and down is arranged above the two rotating half-molds, and a horizontal cylindrical punch is detachably connected to the upper die holder, the cylindrical surface of the cylindrical punch is matched with the two rotating half-molds to bend the pipe.

[0004] When the cylindrical punch in the above patent application file moves downward, the pipe is pressed and formed, and the pipe may be deviated, which causes the bending of the pipe to deviate from the original path, seriously affects the product quality, and greatly reduces the product qualification rate. Practical new type content

[0005] To solve the above technical problems, the technical problems solved by the present application are that the pipe is easy to deviate during downward pressing and forming, and the product quality is seriously affected. To solve the above technical problems, the technical scheme adopted by the present application is:

[0006] To solve the above technical problems, the present application provides a ball screw return pipe bender, which solves the technical problems that the pipe is easy to deviate during downward pressing and forming, and the product quality is seriously affected. To solve the above technical problems, the technical scheme adopted by the present application is:

[0007] A ball screw return pipe bender, comprising:

[0008] A die holder, a recess is formed in the die holder;

[0009] Two half-molds are symmetrically arranged in the recess by a hinged structure, and an arc surface is arranged on the inner side of the half-mold.

[0010] A lower limit die cavity is formed on the inner side arc surface of the half-mold.

[0011] The elastic member A is used for resetting the half mold, and the two ends of the elastic member A are connected with the half mold and the mold frame respectively;

[0012] The upper mold is arranged between the two half molds, and an upper mold cavity corresponding to the lower limiting mold cavity is arranged on the outer surface of the upper mold;

[0013] The movable plate is connected with the upper mold in a fixed structure mode;

[0014] The guide column is connected with the movable plate in a sliding structure mode, and the guide column is connected with the mold frame in a fixed structure mode along the vertical direction;

[0015] The power mechanism is used for driving the movable plate to move up and down.

[0016] Further, the power mechanism comprises a lifting rod and a fixed plate, the fixed plate is connected with the lifting rod in a sliding structure mode, the lifting rod is connected with the movable plate in a fixed structure mode, and the fixed plate is connected with the guide column in a fixed structure mode.

[0017] Further, the upper end of the lifting rod is provided with a shaft sleeve in a hinged structure mode, the shaft sleeve is provided with a pressing rod in a sliding structure mode, the pressing rod is provided with a connecting rod in a hinged structure mode, the connecting rod is provided with a supporting column in a hinged structure mode, and the supporting column is fixedly arranged on one side of the mold frame.

[0018] Further, the elastic member A comprises a bolt A, a bolt B and an elastic rib A, the bolt A and the bolt B are connected through the elastic rib A, the bolt A is connected with the mold frame in a threaded engagement mode, and the bolt B is connected with the half mold in a threaded engagement mode.

[0019] Further, the elastic member B is arranged between the movable plate and the fixed plate, the elastic member B comprises a bolt C, a bolt D and an elastic rib B, the bolt C and the bolt D are connected through the elastic rib B, the bolt C is connected with the movable plate in a threaded engagement mode, and the bolt D is connected with the fixed plate in a threaded engagement mode.

[0020] The utility model discloses the beneficial effects are: through setting up half mold, lower limiting mold cavity, upper mold, upper mold cavity and power mechanism, when bending the return pipe, the return pipe can coincide with the cavity formed between upper mold cavity and lower limiting mold cavity directly, ensure that the return pipe is accurate in the bending process and is positioned, avoid the phenomenon of deviation, guarantee product quality, improve product pass rate.

[0021] Through setting up elastic member A and elastic member B, the half mold, the upper mold and the power mechanism can be automatically reset, the pause time in the operation process is reduced, and the production efficiency is improved. DRAWINGS

[0022] Figure 1 It is the three-dimensional structure schematic diagram of the utility model.

[0023] In the drawing:

[0024] 1, die, 2, groove, 3, half die, 4, lower limit die cavity, 5, elastic member A, 51, bolt A, 52, bolt B, 53, elastic rib A, 6, upper die, 7, upper die cavity, 8, movable plate, 9, guide column, 10, power mechanism, 101, lifting rod, 102, fixed plate, 11, shaft sleeve, 12, pressing rod, 13, connecting rod, 14, support column, 15, elastic member B, 151, bolt C, 152, bolt D, 153, elastic rib B. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the drawings and embodiments, so that the public can better master the implementation method of the utility model, and the specific implementation scheme of the utility model is as follows:

[0026] A kind of ball screw return pipe is bent with pipe bender, including die 1, die 1 is opened in groove 2;Groove 2 is provided with half die 3 in symmetrical way by hinged structure in it, and the inner side of half die 3 is provided with camber surface;Lower limit die cavity 4 is opened in the inner side camber surface of half die 3, elastic member A 5 for resetting half die 3, elastic member A 5 two ends are connected with half die 3 and die 1 respectively;Two half dies 3 are provided with upper die 6 in the middle, and the outer surface of upper die 6 is opened with upper die cavity 7 corresponding to lower limit die cavity 4;Upper die 6 is provided with movable plate 8 in fixed structure mode, movable plate 8 is provided with guide column 9 in sliding structure mode, guide column 9 is connected with die 1 in fixed structure mode along vertical direction, and movable plate 8 is fixedly provided with power mechanism 10 for driving movable plate 8 to move up and down;By setting half die 3, lower limit die cavity 4, upper die 6, upper die cavity 7 and power mechanism 10, when return pipe is bent, return pipe can be directly coincided with the cavity formed between upper die cavity 7 and lower limit die cavity 4, ensure that return pipe is accurately positioned during bending process, avoid the phenomenon of deviation, ensure product quality, improve product qualification rate.

[0027] Need to be stated, power mechanism 10 includes lifting rod 101 and fixed plate 102, fixed plate 102 is connected with lifting rod 101 in sliding structure mode, lifting rod 101 is connected with movable plate 8 in fixed structure mode, and fixed plate 102 is connected with guide column 9 in fixed structure mode;Power is transmitted to movable plate 8 by lifting rod 101, and then transmitted to upper die 6, to ensure that upper die 6 moves up and down along vertical direction.

[0028] Further, the upper end of lifting rod 101 is provided with shaft sleeve 11 in hinged structure mode, shaft sleeve 11 is provided with pressing rod 12 in sliding structure mode, pressing rod 12 is provided with connecting rod 13 in hinged structure mode, connecting rod 13 is provided with support column 14 in hinged structure mode, and support column 14 is fixedly arranged on one side of die 1;By using the lever structure, it is more convenient to apply pressure downward, and the operation is simple and convenient, and manpower is saved.

[0029] It should be noted that the elastic member A5 includes a bolt A51, a bolt B52 and a spring A53, the bolt A51 and the bolt B52 are connected through the spring A53; the bolt A51 is connected with the mold frame 1 in a threaded engagement mode, the bolt B52 is connected with the half mold 3 in a threaded engagement mode; the elastic member B15 is arranged between the movable plate 8 and the fixed plate 102, the elastic member B15 includes a bolt C151, a bolt D152 and a spring B153, the bolt C151 and the bolt D152 are connected through the spring B153; the bolt C151 is connected with the movable plate 8 in a threaded engagement mode, the bolt D152 is connected with the fixed plate 102 in a threaded engagement mode; the setting of the reset structure can automatically reset the two half molds 3, the upper mold 6 and the power mechanism 10, reduce the pause time in the operation process, and improve the production efficiency.

[0030] The working principle and working process of the utility model are as follows:

[0031] The return pipe to be bent and formed is placed in parallel at the upper opening end of the lower limit die cavity 4, the operating pressure rod 12 is pressed downward, the shaft sleeve 11 slides along the pressure rod 12, the pressure rod 12 drives the lifting rod 101 and the movable plate 8 to move downward along the guide column 9, the movable plate 8 drives the upper mold 6 to move downward until the upper mold cavity 7 contacts the return pipe, the force of the pressure rod 12 continues to be applied downward, the upper mold 6 continues to move downward, the return pipe starts to bend under the pressure of the upper mold 6, the two half molds 3 start to rotate inward simultaneously along the hinge points, the edges of the upper mold cavity 7 and the lower limit die cavity 4 gradually coincide, the return pipe gradually coincides with the cavity between the upper mold cavity 7 and the lower limit die cavity 4, until the return pipe completely fills the cavity, at this time, the opposite surfaces of the two half molds 3 are in close contact, the bending is completed, the pressure rod 12 is released, and the return pipe can be taken out.

[0032] In the description of the utility model, it should be understood that the directions or position relations indicated by the terms "center", "upper", "lower", "left", "right", "front", "back", "lower left", "upper right", "outer", "clockwise", "counterclockwise" and the like are based on the directions or position relations shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular direction, be constructed and operated in a particular direction, and therefore cannot be understood as limiting the protection scope of the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. Although the utility model is described according to a limited number of embodiments, those skilled in the art should understand from the above description that other embodiments can be conceived within the scope of the utility model described herein.

Claims

1. A tube bender for ball screw return tubes, characterized by, The utility model relates to a mould frame, which comprises: a mould frame (1) with a recess (2) formed in the mould frame (1); two half-moulds (3) arranged in the recess (2) in a symmetrical manner through a hinged structure, and the inner side of the half-mould (3) is provided with a curved surface; a lower limit mould cavity (4) formed in the inner side curved surface of the half-mould (3); an elastic member A (5) for resetting the half-mould (3), the two ends of the elastic member A (5) are connected with the half-mould (3) and the mould frame (1) respectively; an upper mould (6) arranged between the two half-moulds (3), and the outer surface of the upper mould (6) is provided with an upper mould cavity (7) corresponding to the lower limit mould cavity (4); a movable plate (8) connected with the upper mould (6) in a fixed structure; a guide column (9) connected with the movable plate (8) in a sliding structure, the guide column (9) is connected with the mould frame (1) in a fixed structure along the vertical direction; a power mechanism (10) for driving the movable plate (8) to move up and down.

2. The pipe bender according to claim 1, wherein: The power mechanism (10) comprises a lifting rod (101) and a fixed plate (102), the fixed plate (102) is connected with the lifting rod (101) in a sliding structure, the lifting rod (101) is connected with the movable plate (8) in a fixed structure, and the fixed plate (102) is connected with the guide column (9) in a fixed structure.

3. A pipe bender for ball screw return tubes as defined in claim 2, wherein: The upper end of the lifting rod (101) is provided with a shaft sleeve (11) in a hinged structure, the shaft sleeve (11) is provided with a pressing rod (12) in a sliding structure, the pressing rod (12) is provided with a connecting rod (13) in a hinged structure, the connecting rod (13) is provided with a supporting column (14) in a hinged structure, and the supporting column (14) is fixedly arranged on one side of the mould frame (1).

4. The pipe bender of claim 1, wherein: The elastic member A (5) comprises a bolt A (51), a bolt B (52) and an elastic tendon A (53), the bolt A (51) and the bolt B (52) are connected through the elastic tendon A (53); the bolt A (51) is connected with the mould frame (1) in a threaded engagement manner, and the bolt B (52) is connected with the half-mould (3) in a threaded engagement manner.

5. The pipe bender of claim 1, wherein: An elastic member B (15) is arranged between the movable plate (8) and the fixed plate (102), the elastic member B (15) comprises a bolt C (151), a bolt D (152) and an elastic tendon B (153), the bolt C (151) and the bolt D (152) are connected through the elastic tendon B (153); the bolt C (151) is connected with the movable plate (8) in a threaded engagement manner, and the bolt D (152) is connected with the fixed plate (102) in a threaded engagement manner.

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