Seamless steel tube cold-drawing die and cold-drawing device

Abstract

The utility model discloses a seamless steel tube cold-drawing die and a cold-drawing device, and aims to solve the problem that the traditional die is fastened on a mounting plate through a plurality of bolts, and the disassembly and assembly process needs to consume more time. According to the technical scheme, the seamless steel pipe cold-drawing die is characterized by comprising a mounting plate and a die base, four symmetrically-distributed positioning blocks are arranged on the mounting plate and are each of an L-shaped structure, a cavity for containing the die base is formed in the inner sides of the four positioning blocks, positioning rods are arranged on the four positioning blocks in a sliding and penetrating mode, and the die base is arranged in the cavity. A positioning hole for inserting the positioning rod is formed in the mold seat; and a driving mechanism for controlling the positioning rod to enter and exit the positioning hole is arranged on the mounting plate. According to the seamless steel tube cold-drawing die and the cold-drawing device, the die seat can be disassembled and assembled by controlling the positioning rod to enter and exit from the positioning hole through the arranged driving mechanism, the replacement process of the die is simplified, and the die seat is ensured to be stably installed through double limiting of the positioning block and the positioning rod.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of seamless steel pipe production, more particularly, it relates to a kind of seamless steel pipe cold-drawing die and cold-drawing device. BACKGROUND

[0002] Seamless steel pipe is by whole round steel perforation, surface without weld steel pipe, according to production method, seamless steel pipe can be divided into hot-rolled seamless steel pipe, cold-rolled seamless steel pipe, cold-drawn seamless steel pipe etc., thus cold-drawing technology is often used in the production process of seamless steel pipe for processing.

[0003] Cold-drawing technology is a kind of plastic processing method to seamless steel pipe under normal temperature condition, its core is in the shape of die to steel pipe drawing, to achieve the shape and mechanical properties required.Die shape and size directly determine the shape and size of product after cold-drawing.Therefore, in the cold-drawing process, the appropriate die needs to be selected according to the requirements of product.

[0004] Die installation requires detachability, because it needs to use corresponding die according to different size of steel pipe, traditional die is fastened to mounting plate by multiple bolts, this installation mode can provide sufficient stability and reliability, but it is particularly cumbersome when die is replaced, and the dismounting process needs to consume more time, which not only reduces production efficiency, but also increases labor intensity of worker. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies in the prior art, the utility model aims at providing a kind of seamless steel pipe cold-drawing die and cold-drawing device, drive mechanism control positioning rod in and out positioning hole is set, the die holder can be disassembled, the replacement process of die is simplified, production efficiency is improved, and the stable installation of die holder is ensured by the double limiting of positioning block and positioning rod.

[0006] The above technical purpose of the utility model is realized by the following technical scheme: a kind of seamless steel pipe cold-drawing die, including mounting plate and die holder, four symmetrically distributed positioning blocks are provided on the mounting plate, four positioning blocks are all L-shaped structure, the inner side of four positioning blocks forms the cavity for die holder placement, positioning rod is slidably arranged on four positioning blocks, positioning hole is formed in the die holder for the insertion of positioning rod, drive mechanism is arranged on the mounting plate for controlling the positioning rod in and out positioning hole;The drive mechanism includes support symmetrically arranged on the mounting plate, push plate is slidably connected to both supports, positioning rod on the same side of push plate is fixedly connected thereto, and spring is relatively abutted between push plate and support, air cylinder is arranged on the top of support, push block is arranged on the telescopic end of air cylinder, inclined surface is arranged on the push block, fixed block is arranged on the side of push plate close to push block, and the fixed block is abutted with inclined surface.

[0007] The utility model further sets up: the one side of push board is symmetrical with slide rod away from positioning rod, the support is set with the through hole that slide rod slides and is equipped with, and the one end of slide rod is provided with limit block away from push board, spring is around equipped with the outside of slide rod and abuts to between limit block, support.

[0008] The utility model further sets up: the support is provided with guide block, the guide groove is set up on the guide block, the one side of push block is located in the guide groove and slides away from the inclined plane.

[0009] The utility model further sets up: the fixed block is rotationally connected with gyro wheel, and the gyro wheel is in contact with the inclined plane.

[0010] The utility model further sets up: the one end of positioning rod is conical structure towards positioning hole.

[0011] The utility model also provides a cold-drawing device, including the seamless steel tube cold-drawing die of above.

[0012] Summarized above, the utility model has following beneficial effect:

[0013] Through setting up drive mechanism control positioning rod in and out positioning hole, can realize the disassembly of mould seat, has simplified the replacement process of mould, improved production efficiency, and through the double location of limit block and positioning rod, has guaranteed the stable installation of mould seat. ACCURACY OF DRAWINGS

[0014] Fig. 1 It is the whole structure schematic view of cold-drawing die of the utility model;

[0015] Fig. 2 It is the structure schematic view of drive mechanism of the utility model;

[0016] Fig. 3 It is the structure schematic view of positioning rod and positioning hole of the utility model.

[0017] In the drawing: 1, mounting plate;2, mould seat;3, limit block;4, positioning rod;5, positioning hole;6, support;7, push board;8, spring;9, push block;10, fixed block;11, slide rod;12, limit block;13, guide block;14, gyro wheel. SPECIFIC EMBODIMENTS

[0018] In order to make the technical personnel of the field better understand the technical scheme of the utility model, the utility model is described in further detail below in combination with the drawings and specific embodiments, and it is explained that the embodiment of the application and the features in the embodiment can be combined mutually in the case where there is no conflict.

[0019] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "set up / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] The present invention will now be described in detail with reference to the accompanying drawings.

[0022] Reference Figs. 1-3 A seamless steel pipe cold drawing die includes a mounting plate 1 and a die base 2. Four symmetrically distributed positioning blocks 3 are fixed on the mounting plate 1. The four positioning blocks 3 are all L-shaped. The inner side of the four positioning blocks 3 forms a cavity for placing the die base 2. Positioning rods 4 are slidably passed through the four positioning blocks 3. The die base 2 is provided with positioning holes 5 for the positioning rods 4 to be inserted. The mounting plate 1 is provided with a drive mechanism for controlling the positioning rods 4 to enter and exit the positioning holes 5.

[0023] The drive mechanism includes supports 6 symmetrically fixed on the mounting plate 1. Push plates 7 are slidably connected to both supports 6. Positioning rods 4 located on the same side of the push plates 7 are fixedly connected to them. Springs 8 are abutting against each other between the push plates 7 and the supports 6. A cylinder is fixedly installed on the top of the supports 6. A push block 9 is fixedly installed on the telescopic end of the cylinder. An inclined surface is provided on the push block 9. A fixing block 10 is fixedly installed on the side of the push plate 7 near the push block 9. The fixing block 10 abuts against the inclined surface.

[0024] Additionally, a slide rod 11 is symmetrically fixed on the side of the push plate 7 away from the positioning rod 4. A through hole is provided on the support 6 for the slide rod 11 to slide through. A limiting block 12 is fixed on the end of the slide rod 11 away from the push plate 7. The spring 8 is wrapped around the outside of the slide rod 11 and abuts against the limiting block 12 and the support 6. The slide rod 11 provides guidance and stability for the movement of the push plate 7. At the same time, wrapping the spring 8 around the outside of the slide rod 11 increases the reliability of the spring 8 installation and ensures that the spring 8 will not be excessively twisted or deformed during compression and release.

[0025] A guide block 13 is fixedly provided on the support 6. A guide groove is provided on the guide block 13. The side of the push block 9 away from the inclined plane slides in the guide groove. The setting of the guide block 13 and the guide groove ensures that the push block 9 moves along a predetermined path under the push of the cylinder, reducing the offset and shaking of the push block 9 during the movement process.

[0026] A roller 14 is rotatably connected to the fixed block 10. The roller 14 contacts the inclined surface. The setting of the roller 14 reduces the friction between the fixed block 10 and the inclined surface, making the push block 9 smoother during the pushing process, reducing the wear between the two and extending the service life.

[0027] The end of the positioning rod 4 facing the positioning hole 5 has a tapered structure. When the positioning rod 4 with the tapered structure is inserted into the positioning hole 5, it can be inserted into the positioning hole 5 more easily, reducing the resistance during the insertion process.

[0028] Working principle: During installation, the mold base 2 is first placed into the cavity for initial positioning. At this time, the positioning hole 5 on the mold base 2 is aligned with the positioning rod 4. The cylinder is activated, and the extension end of the cylinder pushes the push block 9 downward. Since the push block 9 has an inclined surface, when the push block 9 moves, it pushes the fixing block 10 and the push plate 7 connected to it. The spring 8 is compressed and deformed during the movement of the push plate 7. The movement of the push plate 7 drives the positioning rod 4 to move into the positioning hole 5 of the mold base 2 until it is fully inserted into the positioning hole 5, thus fixing the mold base 2. During disassembly, the cylinder moves in the opposite direction, the push block 9 moves upward and no longer applies a pushing force to the push plate 7. Under the elastic recovery action, the spring 8 pushes the push plate 7 to move in the opposite direction, thereby driving the positioning rod 4 out of the positioning hole 5. The mold base 2 can then be easily removed, allowing for the replacement of the mold base 2 with a new mold. This simplifies the mold replacement process, improves production efficiency, and ensures the stable installation of the mold base 2 through the double limiting of the positioning block 3 and the positioning rod 4.

[0029] This utility model also provides a cold drawing device, including the above-mentioned seamless steel pipe cold drawing mold, so the cold drawing device with the cold drawing mold also has the same technical effect.

[0030] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A seamless steel tube cold-drawing die comprising a mounting plate (1) and a die seat (2), characterized in that: The mounting plate (1) is provided with four symmetrical positioning blocks (3), the four positioning blocks (3) are all in L-shaped structure, the inner side of the four positioning blocks (3) forms a cavity for placing the mold base (2), the four positioning blocks (3) are all slidably provided with positioning rods (4), the mold base (2) is provided with positioning holes (5) for inserting the positioning rods (4), the mounting plate (1) is provided with a driving mechanism for controlling the positioning rods (4) to enter and exit the positioning holes (5); the driving mechanism comprises supports (6) symmetrically arranged on the mounting plate (1), the two supports (6) are both slidably connected with push plates (7), the positioning rods (4) located on the same side of the push plates (7) are fixedly connected with the push plates (7), and the push plates (7) and the supports (6) are relatively abutted by springs (8), the top of the support (6) is provided with a gas cylinder, the telescopic end of the gas cylinder is provided with a push block (9), the push block (9) is provided with an inclined surface, the side of the push plate (7) close to the push block (9) is provided with a fixed block (10), and the fixed block (10) is abutted with the inclined surface.

2. A seamless tube cold-drawing die according to claim 1, characterized in that: The side of the push plate (7) away from the positioning rod (4) is symmetrically provided with a sliding rod (11), the support (6) is provided with a through hole for slidably penetrating the sliding rod (11), and the end of the sliding rod (11) away from the push plate (7) is provided with a limiting block (12), and the spring (8) is arranged on the outer side of the sliding rod (11) and abuts between the limiting block (12) and the support (6).

3. A seamless tube cold-drawing die according to claim 1, characterized in that: The support (6) is provided with a guide block (13), the guide block (13) is provided with a guide groove, and the side of the push block (9) away from the inclined surface is slidably arranged in the guide groove.

4. A seamless tube cold-drawing die according to claim 1, characterized in that: The fixed block (10) is rotatably connected with a roller (14), and the roller (14) is in contact with the inclined surface.

5. A seamless tube cold-drawing die according to claim 1, characterized in that: The end of the positioning rod (4) towards the positioning hole (5) is in tapered structure.

6. A cold drawing device comprising the seamless steel pipe cold drawing die according to any one of claims 1-5.

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