Auxiliary tool for replacing neck bush of cold-drawn steel drawing die

Abstract

The utility model discloses an auxiliary tool for replacing a neck bush of a cold-drawn steel drawing die, which is arranged at a drawing station and comprises a die mounting seat used for mounting the drawing die and rotatably connected relative to the die mounting seat, so that the drawing die can rotate between the horizontal direction and the vertical direction; the driving device is arranged on the mold mounting seat and is used for driving the mold to rotate; the limiting device is arranged on the die mounting seat and is used for limiting the die so as to ensure that the drawing die is in a horizontal state or a vertical state; the lower pressing block is driven by a first telescopic device to do telescopic motion in the vertical direction so that the neck bush can be installed on the drawing die; and the jacking block is driven by the second telescopic device to do telescopic motion in the vertical direction, so that the neck bush is separated from the drawing die, the step of replacing the neck bush is simplified, time is saved, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of cold working technology of steel, specifically to an auxiliary tooling for changing the inner liner of a cold-drawing steel drawing die. Background Technology

[0002] In the production of cold-drawn steel, it is often necessary to perform diameter-changing drawing to obtain products of different specifications. During the drawing process, the steel will rub against the inner wall of the die. After prolonged use, the inner wall of the die will wear down, causing changes in the inner diameter of the die and affecting the precision and quality of the cold-drawn steel products.

[0003] Therefore, as a vulnerable part of the mold, when wear occurs, the inner bushing is replaced while retaining the original mold, thus saving costs.

[0004] This is because the inner liner and the mold fit together very tightly, requiring tools to remove the inner liner. The usual procedure is to first remove the mold from the drawing station, then send the mold to a special equipment for inner liner replacement, and then install the mold back into the drawing station. The whole process takes a long time and affects production efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide an auxiliary tooling for changing the inner liner of a cold-drawn steel drawing die, so as to solve the technical problems existing in the prior art.

[0006] To solve the above-mentioned technical problems, this utility model specifically provides the following technical solution: an auxiliary tooling for changing the inner liner of a cold-drawn steel drawing die, set at the drawing station, comprising:

[0007] A mold mounting base is used to mount a mold, the mold being rotatably connected relative to the mold mounting base, allowing the mold to rotate between horizontal and vertical directions; a driving device is mounted on the mold mounting base to drive the mold to rotate; a limiting device is mounted on the mold mounting base to restrict the mold, ensuring the mold remains in a horizontal or vertical position; a lower pressing block is driven by a first telescopic device to extend and retract vertically to install the inner bushing onto the mold; a lifting block is driven by a second telescopic device to extend and retract vertically to separate the inner bushing from the mold.

[0008] Furthermore, the mold has rotating shafts on opposite sides, and the mold mounting base has rotating shaft seats for rotating the rotating shafts; the driving device includes a drive motor, which drives one of the rotating shafts to rotate via a bevel gear set.

[0009] Furthermore, the mold has a rectangular shape; the limiting device includes a limiting plate and a first hydraulic telescopic rod, the movable end of the first hydraulic telescopic rod being connected to the limiting plate; the limiting plate is located below the mold, and the first hydraulic telescopic rod is vertically arranged to drive the limiting plate to move up and down, so that the limiting plate abuts against the bottom of the mold to restrict the mold.

[0010] Furthermore, a through hole is provided in the middle of the limiting plate to provide space for the extension and retraction of the lifting block, and four sets of the first hydraulic telescopic rod are provided, located at the four corners of the limiting plate respectively.

[0011] Furthermore, a gantry frame is provided above the mold mounting base, the first telescopic device is set on the gantry frame, and the position of the first telescopic device overlaps with the axis position of the mold in a vertical state. The pressing block is set at the movable end of the first telescopic device.

[0012] Furthermore, the second telescopic device is vertically disposed at the mold mounting base, located directly below the through hole, and the lifting block is disposed at the movable end of the second telescopic device.

[0013] Furthermore, the first telescopic device and the second telescopic device are hydraulic telescopic rods.

[0014] Furthermore, it also includes a spraying device; the nozzle of the spraying device is driven by the second telescopic device to move in the vertical direction, for moving into the interior of the inner liner before separating the inner liner, and spraying cold water onto the inner wall of the inner liner so that the inner liner can shrink and separate from the mold.

[0015] Furthermore, the spraying device includes a nozzle, a water pipe, a water pump, and a water storage tank. The water pipe connects the water storage tank and the nozzle. Multiple sets of nozzles are provided, and the multiple sets of nozzles are circumferentially arranged at equal intervals on the top of the lower pressure block. The spraying direction of the nozzles is towards the inner wall of the inner liner.

[0016] Compared with the prior art, this utility model has the following advantages:

[0017] The auxiliary tooling for replacing the inner bushing of the cold-drawn steel drawing die disclosed in this utility model is designed as a rotatable structure. A pressing device is provided above the die for installing the inner bushing at the work station, and a lifting device is provided below the die for disassembling the inner bushing at the work station. This simplifies the steps of replacing the inner bushing, saves time, and improves work efficiency.

[0018] Furthermore, a spraying device is provided to spray cold water onto the inner liner before disassembly. Based on the principle of thermal expansion and contraction, a gap is created between the inner liner and the mold cavity, facilitating disassembly and preventing damage to the mold. Attached Figure Description

[0019] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0020] Figure 1 A schematic diagram of the auxiliary tooling used to replace the inner bushing of a cold-drawn steel drawing die during the drawing process.

[0021] Figure 2 A schematic diagram of the auxiliary tooling for replacing the inner bushing of a cold-drawn steel drawing die;

[0022] Figure 3 for Figure 2 The sectional view shown.

[0023] The labels in the diagram represent the following:

[0024] 1-Mold mounting base, 11-Mold, 12-Inner bushing, 13-Inner cavity, 14-Gantry frame, 15-Mounting cavity 15;

[0025] 2-Drive unit, 21-Shaft seat, 22-Drive motor, 23-Reduction gear set, 24-Shaft;

[0026] 3-Limiting device, 31-Limiting plate, 32-First hydraulic telescopic rod, 33-Through hole;

[0027] 4-Pressing device, 41-Pressing block, 42-First telescopic device;

[0028] 5-Lifting device, 51-Lifting block, 52-Second telescopic device;

[0029] 6-Sprinkler device, 61-Sprinkler head, 62-Water pipe, 63-Water storage tank, 64-Water pump. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] like Figures 1-3 The present invention provides an embodiment of an auxiliary tooling for replacing the inner bushing of a cold-drawn steel drawing die. The auxiliary tooling is set at the drawing station and is used to directly replace the inner bushing 12 inside the die 11 at the drawing station, thereby omitting the steps of loading and unloading the die 11, shortening the time required to replace the inner bushing 12, and greatly improving work efficiency.

[0032] The auxiliary tooling includes the following structure:

[0033] The mold mounting base 1 is used to mount the mold 11. The mold 11 is rotatably connected to the mold mounting base 1, so that the mold 11 can rotate between the plane where the mold 11 is located and the plane where the mold 11 is located when it is being pulled in the horizontal direction and when the inner bushing 12 is being replaced in the vertical direction.

[0034] The drive device 2 is mounted on the mold mounting base 1 and is used to drive the mold 11 to rotate.

[0035] Specifically, the mold 11 has a rotating shaft 24 on each of its opposite sides, and the mold mounting base 1 has a rotating shaft seat 21 for rotating the rotating shaft 24. The driving device 2 includes a driving motor 22, which drives one of the rotating shafts 24 to rotate via a reduction gear set 23.

[0036] The rotating shaft 24 is horizontally positioned, the drive shaft of the drive motor 22 is vertically positioned, and the reduction gear set is preferably a bevel gear set.

[0037] The limiting device 3 is installed on the mold mounting base 1 and is used to restrict the mold 11 so that the mold 11 is in a horizontal or vertical state.

[0038] Furthermore, this embodiment also provides an embodiment of the limiting device 3, such as... Figure 2 The following is stated:

[0039] The mold mounting base 1 has a mounting cavity 1515 directly below the mold 11, and the limiting device 3 is set in the mounting cavity 1515.

[0040] The limiting device 3 includes a limiting plate 31 and a first hydraulic telescopic rod 32. The first hydraulic telescopic rod 32 is vertically arranged, and the movable end of the first hydraulic telescopic rod 32 is connected to the limiting plate 31, so that the limiting plate 31 is located below the mold 11. The first hydraulic telescopic rod 32 is used to drive the limiting plate 31 to move up and down, so that the limiting plate 31 abuts against the bottom of the mold 11 to restrict the mold 11.

[0041] Furthermore, in order to better fix the mold 11 with the limiting plate 31, the mold 11 is rectangular in shape.

[0042] When the mold 11 needs to rotate, the first hydraulic rod first drives the limiting plate 31 to move downward; then the mold 11 starts to rotate. When the mold 11 rotates to the horizontal or vertical direction, the first hydraulic rod drives the limiting plate 31 to move upward until it abuts against the bottom of the mold 11 to fix the mold 11, so that the mold 11 remains in a horizontal or vertical state.

[0043] The pressing device 4 is installed on the mold mounting base 1, located directly above the mold 11.

[0044] Specifically, the pressing device 4 includes a pressing block 41 and a first telescopic device 42 that can drive the pressing block 41 to move in a vertical direction; by repeatedly striking the inner liner 12 downwards by the pressing block 41, the outer wall of the inner liner 12 is completely fitted with the inner wall of the inner cavity 13 in the mold 11 for installing the inner liner 12, so as to achieve fixation between the two and complete the installation of the inner liner 12.

[0045] To facilitate the fitting of the inner sleeve 12 and the mold 11, the inner cavity 13 of the mold 11 is designed as a conical structure, and the outer wall of the inner sleeve 12 is also designed as a conical structure that can fit into the inner cavity 13.

[0046] Furthermore, in order to ensure that the inner liner 12 fits better with the inner cavity 13, lubricating oil is applied to the inner wall of the inner cavity 13 of the mold 11 before installing the inner liner 12.

[0047] This embodiment also discloses the specific installation structure of the first telescopic device 42, such as... Figure 2 As shown:

[0048] A gantry frame 14 is provided above the mold 11 at the mold mounting base 1. The first telescopic device 42 is set on the gantry frame 14, and the position of the first telescopic device 42 overlaps with the axis position of the mold 11 in a vertical state. The lower pressure block 41 is set at the movable end of the first telescopic device 42.

[0049] The lifting device 5 is positioned above the mold mounting base 1 and directly below the mold 11.

[0050] Specifically, the lifting device 5 includes a lifting block 51 and a second telescopic device 52 that can drive the lower pressing block 41 to telescopically move in the vertical direction; by repeatedly striking the inner liner 12 upward by the lifting block 51, the inner liner 12 is separated from the mold 11, thereby realizing the disassembly of the inner liner 12.

[0051] The second telescopic device 52 is vertically installed in the mounting cavity 1515. Therefore, in order to avoid the limiting plate 31 from obstructing the movement of the lifting block 51, a through hole 33 is opened in the middle of the limiting plate 31, which provides space for the telescopic movement of the lifting block 51.

[0052] Furthermore, the first hydraulic telescopic rod 32 is provided in four sets, which are located at the four corners of the limiting plate 31 respectively; the second telescopic device 52 is vertically set at the mold mounting base 1, located directly below the through hole 33.

[0053] The first telescopic device 42 and the second telescopic device 52 are hydraulic telescopic rods, with the lowering block 41 and the lifting block 51 respectively located at the movable end of the hydraulic telescopic rod.

[0054] To facilitate easier separation of the inner liner 12 and the mold 11, this embodiment also provides the following examples, such as... Figure 2 As shown:

[0055] It also includes a spraying device 6; the nozzle 61 of the spraying device 6 is driven by the second telescopic device 52 to move in the vertical direction, and is used to move into the interior of the inner liner 12 before separating the inner liner 12, and spray cold water on the inner wall of the inner liner 12 so that the inner liner 12 can shrink and separate from the mold 11.

[0056] Furthermore, the spraying device 6 includes a nozzle 61, a water pipe 62, a water pump 64, and a water storage tank 63. The water pipe 62 connects the water storage tank 63 and the nozzle 61. The nozzle 61 is provided in multiple sets, and the multiple sets of nozzles 61 are circumferentially arranged at equal intervals on the top of the lower pressure block 41. The spraying direction of the nozzle 61 is towards the inner wall of the inner liner 12.

[0057] Water pipe 62 is laid along gantry 14, and water storage tank 63 is set independently of mold mounting base 1.

[0058] The above embodiments are merely exemplary embodiments of this application and are not intended to limit this application. The scope of protection of this application is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this application within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this application.

Claims

1. An auxiliary tooling for changing the inner bushing of a cold-drawn steel drawing die, characterized in that, Located at the drawing station, including: A mold mounting base (1) is used to mount a mold (11), the mold (11) being rotatably connected relative to the mold mounting base (1) so that the mold (11) can rotate between the horizontal and vertical directions; A driving device (2) is provided on the mold mounting base (1) for driving the mold (11) to rotate; A limiting device (3) is provided on the mold mounting base (1) to restrict the mold (11) so that the mold (11) is kept in a horizontal or vertical state. The lower pressure block (41) is driven by the first telescopic device (42) to telescopically move in the vertical direction to install the inner liner (12) onto the mold (11). The lifting block (51) is driven by the second telescopic device (52) to extend and retract in the vertical direction to separate the inner liner (12) from the mold (11).

2. The auxiliary tooling for changing the inner bushing of the cold-drawn steel drawing die according to claim 1, characterized in that, The mold (11) is provided with rotating shafts (24) on opposite sides, and the mold mounting base (1) is provided with rotating shaft seats (21) for rotating the rotating shafts (24). The drive device (2) includes a drive motor (22), which drives one of the shafts (24) to rotate via a reduction gear set (23).

3. The auxiliary tooling for changing the inner bushing of the cold-drawn steel drawing die according to claim 2, characterized in that, The mold (11) is rectangular in shape; The limiting device (3) includes a limiting plate (31) and a first hydraulic telescopic rod (32). The movable end of the first hydraulic telescopic rod (32) is connected to the limiting plate (31). The limiting plate (31) is located below the mold (11). The first hydraulic telescopic rod (32) is vertically arranged to drive the limiting plate (31) to move up and down, so that the limiting plate (31) abuts against the bottom of the mold (11) to restrict the mold (11).

4. The auxiliary tooling for changing the inner bushing of the cold-drawn steel drawing die according to claim 3, characterized in that, The limiting plate (31) has a through hole (33) in the middle position, which provides space for the extension and retraction of the lifting block (51). The first hydraulic telescopic rod (32) is provided in four sets, which are located at the four corners of the limiting plate (31).

5. The auxiliary tooling for changing the inner bushing of the cold-drawn steel drawing die according to claim 1, characterized in that, The mold mounting base (1) is provided with a gantry frame (14) above the mold (11). The first telescopic device (42) is set on the gantry frame (14), and the position of the first telescopic device (42) overlaps with the axis position of the mold (11) in a vertical state. The lower pressure block (41) is set at the movable end of the first telescopic device (42).

6. The auxiliary tooling for changing the inner bushing of the cold-drawn steel drawing die according to claim 4, characterized in that, The second telescopic device (52) is vertically arranged at the mold mounting base (1), located directly below the through hole (33), and the lifting block (51) is arranged at the movable end of the second telescopic device (52).

7. The auxiliary tooling for changing the inner bushing of the cold-drawn steel drawing die according to claim 6, characterized in that, The first telescopic device (42) and the second telescopic device (52) are hydraulic telescopic rods.

8. The auxiliary tooling for changing the inner bushing of the cold-drawn steel drawing die according to claim 1, characterized in that, It also includes a spraying device (6); the nozzle (61) of the spraying device (6) is driven by the second telescopic device (52) to move in the vertical direction, for moving into the inner liner (12) before separating the inner liner (12), and spraying cold water onto the inner wall of the inner liner (12) so that the inner liner (12) can shrink and separate from the mold (11).

9. The auxiliary tooling for changing the inner bushing of the cold-drawn steel drawing die according to claim 8, characterized in that, The spraying device (6) includes a nozzle (61), a water pipe (62), a water pump (64), and a water storage tank (63). The water pipe (62) connects the water storage tank (63) and the nozzle (61). The nozzle (61) is provided in multiple sets, and the multiple sets of nozzles (61) are circumferentially arranged at equal intervals on the top of the lower pressure block (41). The spraying direction of the nozzle (61) is towards the inner wall of the inner liner (12).

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