CN218425299U

CN218425299U - Prevent turning round and prevent toughness bending device of fish tail

Info

Publication number: CN218425299U
Application number: CN202222429161.5U
Authority: CN
Inventors: 白新歌; 迟旭; 刘勇
Original assignee: Dalian Lianhuan New Material Technology Co ltd
Current assignee: Dalian Lianhuan New Material Technology Co ltd
Priority date: 2022-09-14
Filing date: 2022-09-14
Publication date: 2023-02-03
Anticipated expiration: 2032-09-14

Abstract

The utility model discloses a torsion-proof scratch-proof toughness bending device, wherein a lower bending die fixing base is fixedly arranged on a base of an outer frame of a tensile machine, two groups of lower bending die rotating devices are symmetrically arranged above the lower bending die fixing base, and clamping devices are symmetrically arranged at the tops of the two groups of lower bending die rotating devices respectively; and an upper bending die is arranged at the bottom of the lower stretching beam of the outer frame of the tensile machine. The utility model discloses a pressure spring group and extension spring group and the cooperation of the rotation brace table of the mould rotating device of bending down, can be at the uniform velocity stable around the back shaft rotation, the inboard of rotating the brace table has three roller bar type roller bearings simultaneously, be convenient for change the slip when bending into the roll, avoid fish tail wire rod surface, prevent to twist reverse; a polyurethane rubber block is arranged below the knurling clamping block, so that the wire can be prevented from being scratched; the bending angle is larger than 130 degrees and close to 180 degrees, the toughness limit can be rapidly detected, and the tiny defects of the wire rod can be found.

Description

Prevent turning round and prevent toughness bending device of fish tail

Technical Field

The utility model relates to an accurate wire rod processing technology field especially relates to a prevent turning round and prevent toughness bending device of fish tail.

Background

The wire rod production process has annealing, solid solution, quenching and tempering and other heat treatment processes, the annealing process may cause hardness to be not reduced or local quenching, and the solid solution and quenching and tempering process may cause grain growth, overheating of grain boundary and even overburning.

In order to detect the toughness of the wire rod, the wire rod needs to be bent in a 180-degree one-way mode, the bending is carried out on a stretching machine, due to the design defects of an original bending die, the upper surface of the wire rod is not fixed, and in the bending process, the wire rod is twisted along with the increase of the bending angle.

And the surface of the wire rod can be scratched due to hard contact, and the wire rod is particularly greatly influenced by the wire rod with high hardness (more than or equal to 520 HV) and high tensile strength (more than or equal to 1700 MPa).

The prior art has the following disadvantages: when the wire is pressed down, the wire can be twisted; the surface of the wire with high hardness and high tensile strength can be scratched, so that the result is influenced; the existing die can only be bent to 130 degrees.

SUMMERY OF THE UTILITY MODEL

The utility model solves the above problems, and provides a torsion-proof and scratch-proof toughness bending device.

In order to solve the technical problem, the technical scheme of the utility model is that: a torsion-proof scratch-proof toughness bending device comprises an anti-pulling machine outer frame, wherein a lower bending die fixing base is fixedly mounted on a base of the anti-pulling machine outer frame, a U-shaped groove is formed in the middle of the top surface of the lower bending die fixing base, two groups of lower bending die rotating devices are symmetrically arranged above the lower bending die fixing base, the two groups of lower bending die rotating devices are respectively positioned on two sides of the U-shaped groove of the lower bending die fixing base, and clamping devices are symmetrically mounted at the tops of the two groups of lower bending die rotating devices respectively; and an upper bending die is arranged at the bottom of the lower stretching beam of the outer frame of the tensile machine and is positioned right above the U-shaped groove of the fixing base of the lower bending die.

Furthermore, the lower bending die rotating device comprises a rotating support table, and a roller type roller is mounted on the inner side of the rotating support table.

Furthermore, the number of the roller-rod type rolling shafts is three, and the roller-rod type rolling shafts are arranged in an arc shape.

Furthermore, the front end and the rear end of the lower bending die rotating device are both connected with supporting shafts, the supporting shafts are inserted into the upper portion of the triangular support, and the lower portion of the triangular support is fixed at the front end and the rear end of the lower bending die fixing base through screws.

Furthermore, a pressure spring group and a tension spring group are arranged between the lower bending die fixing base and the bottom of the lower bending die rotating device.

Furthermore, the pressure spring group is located on the inner side of the lower bending die rotating device, and the tension spring group is located on the outer side of the lower bending die rotating device.

Further, the pressure spring group comprises a compression spring and supporting seats positioned at the upper end and the lower end of the compression spring; the tension spring group comprises an extension spring and tension spring hooks positioned at the upper end and the lower end of the extension spring.

Further, clamping device includes the tight piece of annular knurl clamp, the lead screw locating piece, dovetail locating piece and the screw lead screw of taking the crank, two tight pieces of annular knurl clamp are installed at the top of rotating the brace table, the medial surface of two tight pieces of annular knurl clamp all is equipped with the annular knurl, wherein be equipped with the positive screw in the tight piece of annular knurl clamp, be equipped with the anti-thread in the tight piece of another annular knurl clamp, two lead screw locating pieces are located the front and back end top of rotating the brace table respectively, the lead screw hole has been seted up in the terminal surface of lead screw locating piece, the screw hole that the screw lead screw of taking the crank passed one of them lead screw locating piece is connected with the screw in the tight piece of annular knurl clamp, the inside and outside top of rotating the brace table all is provided with the dovetail locating piece.

Furthermore, a polyurethane rubber block is arranged between the two knurled clamping blocks and a top groove of the rotating supporting table.

Furthermore, the upper bending die comprises a bent core and a fixed sleeve, the bent core is arranged at the bottom of the fixed sleeve, and the fixed sleeve is arranged at the bottom of the lower stretching beam of the outer frame of the tensile machine.

The utility model discloses a pressure spring group and extension spring group and the cooperation of the rotation brace table of the mould rotating device of bending down, can be at the uniform velocity stable around the back shaft rotation, the inboard of rotating the brace table has three roller bar type roller bearings simultaneously, be convenient for change the slip when bending into the roll, avoid fish tail wire rod surface, prevent to twist reverse; a polyurethane rubber block is arranged below the knurling clamping block, so that the wire can be prevented from being scratched; the bending angle is larger than 130 degrees and close to 180 degrees, the toughness limit can be rapidly detected, and the tiny defects of the wire rod can be found.

Drawings

FIG. 1 is a first schematic structural diagram of the present invention;

FIG. 2 is a second schematic structural view of the present invention;

fig. 3 is a third schematic structural diagram of the present invention.

Wherein: 1. an outer frame of the tensile machine; 2. fixing a base by a lower bending die; 3. a screw; 4. a triangular bracket; 5. a support shaft; 6. a threaded screw rod with a crank; 7. a knurling clamping block; 8. a roller-bar type roller; 9. a polyurethane rubber block; 10. rotating the support table; 11. a screw rod positioning block; 12. A dovetail groove positioning block; 13. a supporting seat; 14. a compression spring; 15. a tension spring hook; 16. an extension spring; 17. bending the core; 18. and (4) fixing sleeves.

Detailed Description

The following description of the present invention will be made with reference to the accompanying drawings 1-3.

A torsion-proof scratch-proof toughness bending device comprises an anti-pulling machine outer frame 1, wherein a lower bending die fixing base 2 is fixedly installed on a base of the anti-pulling machine outer frame 1, a U-shaped groove is formed in the middle of the top surface of the lower bending die fixing base 2, the lowest point of a sample piece after bending falls into the U-shaped groove, two groups of lower bending die rotating devices are symmetrically arranged above the lower bending die fixing base 2 and used for supporting a wire rod to be bent towards the center, the two groups of lower bending die rotating devices are respectively located on two sides of the U-shaped groove of the lower bending die fixing base 2, and clamping devices are respectively symmetrically installed at the tops of the two groups of lower bending die rotating devices and used for clamping the wire rod sample piece; an upper bending die is installed at the bottom of a lower stretching cross beam of the outer frame 1 of the tensile machine, and the upper bending die is located right above a U-shaped groove of the lower bending die fixing base 2 and matched with the lower bending die to perform bending tests. The upper bending die comprises a bending core 17 and a fixing sleeve 18, the bending core 17 is installed at the bottom of the fixing sleeve 18, and the fixing sleeve 18 is installed at the bottom of the lower stretching beam of the tensile machine outer frame 1. The lower bending die rotating device comprises a rotating supporting table 10, three roller type rolling shafts 8 which are arranged in an arc shape are installed on the inner side of the rotating supporting table 10, sliding during bending is convenient to change into rolling, the surface of a wire rod is prevented from being scratched, bending pressure can be decomposed during rolling, the positive pressure is not completely directly acted on the wire rod, and torsion is prevented. The front end and the rear end of the rotary supporting table 10 are both connected with supporting shafts 5, the supporting shafts 5 are inserted into the upper portion of the triangular support 4, and the lower portion of the triangular support 4 is fixed at the front end and the rear end of the lower bending die fixing base 2 through screws 3 and used for supporting the upper lower bending die rotating device. A pressure spring set and a tension spring set are arranged between the lower bending die fixing base 2 and the bottom of the lower bending die rotating device. The pressure spring is organized and is located the inboard of the mould rotating device of bending down, the extension spring is organized and is located the outside of the mould rotating device of bending down, lean on one side in U-shaped groove, the big pressure spring of fixed two sets of stiffness coefficients is organized, when guaranteeing to bend, it can rotate around back shaft 5 to rotate supporting bench 10 at the uniform velocity is stable to rotate, there are two sets of tension springs that the stiffness coefficient is medium to organize with the another side that the pressure spring group corresponds, one then help pressure spring group decomposes partial pressure, guarantee at the uniform velocity circular motion, two then after the compression of bending finishes, make supporting bench 10 resume home position. The pressure spring group comprises a compression spring 14 and supporting seats 13 positioned at the upper end and the lower end of the compression spring 14; the tension spring group comprises an extension spring 16 and tension spring hooks 15 positioned at the upper end and the lower end of the extension spring 16. Clamping device includes the tight piece 7 of annular knurl clamp, lead screw locating piece 11, dovetail locating piece 12 and the screw lead screw 6 of taking the crank, two annular knurls press from both sides tight piece 7 and install at the top of rotating brace table 10, the medial surface of two blocks of annular knurl clamp 7 all is equipped with the annular knurl, wherein be equipped with the positive screw in the tight piece 7 of annular knurl clamp, be equipped with the internal thread in the tight piece 7 of another annular knurl clamp, two blocks of lead screw locating pieces 11 are located the front and back end top of rotating brace table 10 respectively, the lead screw hole has been seted up in the terminal surface of lead screw locating piece 11, the screw lead screw 6 of taking the crank passes the lead screw hole of one of them lead screw locating piece 11 and the threaded connection in the tight piece 7 of annular knurl clamp, press from both sides tight sample spare, press from both sides tight piece 7 drunkenness and twist in order to prevent the annular knurl clamp, the inside and outside top of rotating brace table 10 all is provided with dovetail locating piece 12. And a polyurethane rubber block 9 is arranged between the two knurled clamping blocks 7 and the top groove of the rotating support table 10, so that the wire rod is prevented from being scratched, and the knurled clamping blocks can be replaced regularly.

Description of the operation:

firstly, the threaded screw rod 6 with the crank is shaken, the knurled clamping block 7 is opened, the sample piece is placed on the polyurethane rubber block 9, and then the threaded screw rod 6 with the crank is shaken, so that the knurled clamping block 7 clamps the sample piece.

And (3) inching a descending button on an operating handle of the tensile machine to enable the bending core 17 below the upper bending die to move downwards until the distance is 4-5mm from the sample piece.

The descending button is clicked to enable the bending core 17 to automatically descend to abut against the sample to start bending, meanwhile, the rotary supporting platform 10 slowly rotates under the pressure of the sample under the combined action of the supporting force of the compression spring 14 and the tensile force of the extension spring 16, and meanwhile, the sample slides under the three roller rod type rollers 8 to prevent the surface from being scratched.

When the bending core 17 is lowered to the inside of the U-shaped groove and is 3-5mm away from the bottom, the stop button is pressed, the bending is finished, and the bending angle of the sample piece is close to 180 degrees.

Above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the design of the present invention, equivalent replacement or change should be covered within the protection scope of the present invention.

Claims

1. The anti-torsion scratch-proof toughness bending device is characterized by comprising an anti-tension machine outer frame (1), wherein a lower bending die fixing base (2) is fixedly installed on a base of the anti-tension machine outer frame (1), a U-shaped groove is formed in the middle of the top surface of the lower bending die fixing base (2), two groups of lower bending die rotating devices are symmetrically arranged above the lower bending die fixing base (2), the two groups of lower bending die rotating devices are respectively positioned on two sides of the U-shaped groove of the lower bending die fixing base (2), and clamping devices are respectively symmetrically installed at the tops of the two groups of lower bending die rotating devices; an upper bending die is installed at the bottom of a lower stretching cross beam of the outer frame (1) of the tensile machine and is positioned right above a U-shaped groove of a lower bending die fixing base (2).

2. The torsion-proof and scratch-proof flexible bending device according to claim 1, wherein the lower bending die rotating device comprises a rotating support platform (10), and a roller type roller (8) is installed on the inner side of the rotating support platform (10).

3. The twisting-resistant scratch-resistant ductile bending apparatus according to claim 2, wherein three of said roller-type rollers (8) are arranged in an arc.

4. The torsion-proof scratch-proof flexible bending device according to claim 1 or 2, wherein the front end and the rear end of the lower bending die rotating device are both connected with a support shaft (5), the support shafts (5) are inserted into the upper portion of the triangular support (4), and the lower portion of the triangular support (4) is fixed at the front end and the rear end of the lower bending die fixing base (2) through screws (3).

5. The torsion-proof and scratch-proof flexible bending device according to claim 1, wherein a pressure spring set and a tension spring set are arranged between the lower bending die fixing base (2) and the bottom of the lower bending die rotating device.

6. The torsion-proof scratch-proof flexible bending device according to claim 5, wherein the compression spring set is located at the inner side of the lower bending die rotating device, and the tension spring set is located at the outer side of the lower bending die rotating device.

7. The torsion-proof scratch-proof flexible bending device according to claim 5 or 6, wherein the compression spring set comprises a compression spring (14) and supporting seats (13) positioned at the upper end and the lower end of the compression spring (14); the tension spring group comprises a tension spring (16) and tension spring hooks (15) positioned at the upper end and the lower end of the tension spring (16).

8. The torsion-proof and scratch-proof flexible bending device according to claim 2, wherein the clamping device comprises knurled clamping blocks (7), a screw rod positioning block (11), a dovetail groove positioning block (12) and a threaded screw rod (6) with a crank, the two knurled clamping blocks (7) are arranged at the top of the rotary supporting table (10), knurls are arranged on the inner side surfaces of the two knurled clamping blocks (7), a positive thread is arranged in one knurled clamping block (7), a negative thread is arranged in the other knurled clamping block (7), the two screw rod positioning blocks (11) are respectively arranged at the tops of the front end and the rear end of the rotary supporting table (10), screw rod holes are formed in the end surfaces of the screw rod positioning blocks (11), the threaded screw rod (6) with the crank penetrates through the screw rod hole of one screw rod positioning block (11) to be connected with the threads in the dovetail groove clamping block (7), and the positioning blocks (12) are arranged at the tops of the inner side and the outer side of the rotary supporting table (10).

9. The torsion-proof scratch-proof flexible bending device according to claim 8, wherein a polyurethane rubber block (9) is arranged between the two knurled clamping blocks (7) and the top groove of the rotary supporting table (10).

10. The torsion-proof scratch-proof flexible bending device according to claim 1, wherein the upper bending die comprises a bending core (17) and a fixing sleeve (18), the bending core (17) is installed at the bottom of the fixing sleeve (18), and the fixing sleeve (18) is installed at the bottom of the lower stretching beam of the outer frame (1) of the tensile machine.