Three-wire cold-drawing machine for stainless steel pipe

Abstract

The utility model discloses a stainless steel pipe three-wire cold-drawing machine, which comprises a clamp mechanism, the clamp mechanism comprises a base, a back plate arranged at the rear end of the base, a clamping seat and a clamp main body, the clamp main body comprises a movable seat, a left clamp and a right clamp, the left clamp and the right clamp are in the shape of a right trapezoid, and the inclined surfaces of the left clamp and the right clamp are positioned on the outer side; the rear end of the left clamp and the rear end of the right clamp are connected to the two sides of the front end of the movable base in a left-right moving mode respectively, magnets are embedded in the front ends of the inner sides of the left clamp and the right clamp respectively, the middle of the left clamp and the middle of the right clamp are each provided with a limiting groove, a limiting block is arranged on the portion, between the left clamp and the right clamp, of the movable base, and a spring is connected between the movable base and the back plate. The clamping seat is provided with a triangular opening, the structure is simpler, maintenance is almost not needed, and clamping is reliable.

Description

Technical Field

[0001] The utility model relates to a three-wire cold drawing machine for stainless steel pipes. Background Art

[0002] In the prior art, the clamping mechanism of the three-wire cold drawing machine for stainless steel pipes is generally a hydraulic clamp. This clamping mechanism has a complex structure, high manufacturing cost, and requires regular maintenance. In addition, its clamping force depends on the power of the hydraulic cylinder. Once the hydraulic cylinder fails to work normally, the end of the steel pipe cannot be clamped. Once the hydraulic cylinder is damaged during the cold drawing process, accidents are prone to occur, which is not reliable enough. Utility Model Content

[0003] The utility model aims to overcome the deficiencies of the prior art and provide a three-wire cold drawing machine for stainless steel pipes which has a simpler structure and is more reliable.

[0004] The technical solution of the utility model is: a three-wire cold drawing machine for stainless steel pipes, comprising a clamp mechanism, the clamp mechanism comprising a base, a back plate arranged at the rear end of the base, a clamp seat arranged at the front end of the base, and a clamp body arranged between the back plate and the clamp seat;

[0005] The clamp body comprises a movable seat, a left clamp and a right clamp, the left clamp and the right clamp are both in the shape of a right-angled trapezoid and their inclined surfaces are located on the outside, the rear ends of the left clamp and the right clamp are respectively connected to the two sides of the front end of the movable seat for left and right movement, the inner front ends of the left clamp and the right clamp are respectively embedded with magnets, the middle parts of the left clamp and the right clamp are also respectively provided with a limiting groove, the movable seat between the left clamp and the right clamp is also provided with a limiting block, and a spring is also connected between the movable seat and the back plate;

[0006] The clamping seat is provided with a triangular opening. When the left clamp and the right clamp clamp the end of the steel pipe and are dragged forward by the steel pipe, the left clamp and the right clamp are clamped into the opening and lock the end of the steel pipe.

[0007] Preferably, there are three pairs of clamp bodies and openings.

[0008] Preferably, two springs are provided on the back of the movable seat, and two ends of the two springs are respectively connected to the movable seat and the back plate.

[0009] Furthermore, two guide rods are provided on the back of the movable seat, and the back plate has guide holes corresponding to the guide rods. The guide rods pass through the guide holes, and the two springs are respectively sleeved on the corresponding guide rods.

[0010] Furthermore, the front end of the movable seat is provided with a slide groove, and the rear ends of the left clamp and the right clamp are respectively provided with sliders, and the two sliders are respectively slidably connected to the two sides of the slide groove.

[0011] Furthermore, the back plate is fixed to the base by screws.

[0012] Specifically, the clamping seat is a thickened clamping seat.

[0013] Furthermore, the base is fixed at the front end of the trolley.

[0014] Furthermore, a connecting portion is provided at the rear end of the base, and the base is fixed to the front end of the trolley by fixing bolts, and the connecting portion of the base is also connected to the connecting platform of the trolley.

[0015] Furthermore, the front end of the base is provided with a platform, and the platform is provided with an arc-shaped guide groove corresponding to the end of the steel pipe.

[0016] The beneficial effects of the utility model are as follows: compared with the hydraulic clamp, the utility model has the advantages of simple structure, low manufacturing cost and almost no maintenance. When clamping, it is only necessary to place the pre-clamped and deflated end of the steel pipe between the left clamp and the right clamp, so that the limit rod at the end of the steel pipe is inserted into the two limit grooves, and cold drawing can be carried out, which is convenient and quick; during the cold drawing process, as the traction force acts, the left clamp and the right clamp clamp the steel pipe more tightly, and the clamping is reliable; after clamping, as the traction force disappears, the movable seat tends to reset under the action of the spring, and at this time, it is only necessary to gently push the steel pipe in the direction of the trolley to remove the end of the steel pipe from the clamping mechanism, and it is also very convenient to remove the steel pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the clamp body in the utility model.

[0019] In the figure: base 1, back plate 2, clamping seat 3, moving seat 4, left clamp 5, right clamp 6, magnet 7, steel pipe 8, limit groove 9, limit rod 10, limit block 11, spring 12, opening 13, guide rod 14, slide groove 15, connecting part 16, platform 17, arc guide groove 18. DETAILED DESCRIPTION

[0020] The technical solution of the utility model is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0021] Combination Figure 1 and Figure 2 As shown, a three-wire cold drawing machine for stainless steel pipes includes a clamp mechanism;

[0022] The clamp mechanism comprises a base 1, a back plate 2 arranged at the rear end of the base 1, a clamp seat 3 arranged at the front end of the base 1, and a clamp body arranged between the back plate 2 and the clamp seat 3;

[0023] The clamp body comprises a movable seat 4, a left clamp 5 and a right clamp 6. The left clamp 5 and the right clamp 6 are both in the shape of a right-angled trapezoid and their inclined surfaces are located on the outside. The rear ends of the left clamp 5 and the right clamp 6 are respectively movable left and right and connected to the front ends of the movable seat 4. The inner front ends of the left clamp 5 and the right clamp 6 are respectively embedded with magnets 7 for initially adsorbing the clamped steel pipe 8 to avoid a gap between the left clamp 5 or the right clamp 6 and the steel pipe 8. The left clamp 5 and the right clamp 6 are respectively fixed to the inner front ends of the left clamp 5 and the right clamp 6. A limiting groove 9 is also provided in the middle of the clamp 6, and the limiting groove 9 is used to insert a limiting rod 10 inserted in the end of the steel pipe 8. A limiting block 11 is also provided on the movable seat 4 between the left clamp 5 and the right clamp 6 to prevent the left clamp 5 and the right clamp 6 from closing before clamping the steel pipe 8; a spring 12 is also connected between the movable seat 4 and the back plate 2, and before the end of the steel pipe 8 is not clamped, the movable seat 4 is arranged close to the back plate 2 to facilitate the initial clamping of the end of the steel pipe 8;

[0024] The clamping seat 3 is provided with a triangular opening 13 . When the left clamp 5 and the right clamp 6 clamp the end of the steel pipe 8 and are dragged forward by the steel pipe 8 , the left clamp 5 and the right clamp 6 are inserted into the opening 13 and lock the end of the steel pipe 8 .

[0025] Compared with the hydraulic clamp, the above structure has the advantages of simple structure, low manufacturing cost and almost no maintenance. When clamping, it is only necessary to place the pre-clamped end of the steel pipe 8 between the left clamp 5 and the right clamp 6, so that the limit rod 10 at the end of the steel pipe 8 is inserted into the two limit grooves 9, and cold drawing can be carried out, which is convenient and quick; during the cold drawing process, with the action of traction, the left clamp 5 and the right clamp 6 clamp the steel pipe 8 more tightly, and the clamping is reliable; after clamping, with the disappearance of traction, the movable seat 4 tends to reset under the action of the spring 12. At this time, it is only necessary to gently push the steel pipe 8 in the direction of the trolley to remove the end of the steel pipe 8 from the clamping mechanism, and it is also very convenient to remove the steel pipe 8.

[0026] Preferably, Figure 1 As shown, there are three pairs of clamp bodies and openings 13 to correspond to the processing requirements of a three-wire cold drawing machine.

[0027] Preferably, Figure 1 As shown, two springs 12 are provided on the back of the moving seat 4 , and the two ends of the two springs 12 are respectively connected to the moving seat 4 and the back plate 2 .

[0028] In another embodiment, if Figure 1 As shown, two guide rods 14 are also provided on the back of the moving seat 4, and the back plate 2 has guide holes corresponding to the guide rods 14. The guide rods 14 pass through the guide holes, and the two springs 12 are respectively mounted on the corresponding guide rods 14 to avoid left and right deviation when the moving seat 4 is displaced.

[0029] In another embodiment, if Figure 2 As shown, the front end of the movable seat 4 has a slide groove 15, and the rear ends of the left clamp 5 and the right clamp 6 are respectively provided with sliders, and the two sliders are respectively slidably connected to the two sides of the slide groove 15.

[0030] In another embodiment, if Figure 1 As shown, the back plate 2 is fixed to the base 1 by screws, so that the back plate 2 is detachable, thereby facilitating the assembly of the clamp body.

[0031] In another embodiment, the clamping seat 3 is a thickened clamping seat 3 to improve the reliability of the clamping seat 3 .

[0032] In another embodiment, the base 1 is fixed to the front end of the vehicle.

[0033] In another embodiment, if Figure 1 As shown, the rear end of the base 1 is also provided with a connecting portion 16, and the base 1 is fixed to the front end of the trolley by fixing bolts. The connecting portion 16 of the base 1 is also connected to the connecting platform of the trolley. The double fixation makes the fixing method of the base 1 more reliable.

[0034] In another embodiment, if Figure 1 As shown, the front end of the base 1 also has a platform 17 , and the platform 17 has an arc-shaped guide groove 18 corresponding to the end of the steel pipe 8 .

Claims

1. A three-wire cold drawing machine for stainless steel pipes, comprising a clamp mechanism, characterized in that: The clamp mechanism comprises a base (1), a back plate (2) arranged at the rear end of the base (1), a clamp seat (3) arranged at the front end of the base (1), and a clamp body arranged between the back plate (2) and the clamp seat (3); The clamp body comprises a movable seat (4), a left clamp (5) and a right clamp (6); the left clamp (5) and the right clamp (6) are both in the shape of a right-angled trapezoid and their inclined surfaces are located on the outside; the rear ends of the left clamp (5) and the right clamp (6) are respectively movable left and right and connected to the front ends of the movable seat (4); the inner front ends of the left clamp (5) and the right clamp (6) are respectively embedded with magnets (7); the middle parts of the left clamp (5) and the right clamp (6) are also respectively provided with a limiting groove (9); a limiting block (11) is also provided on the movable seat (4) between the left clamp (5) and the right clamp (6); and a spring (12) is also connected between the movable seat (4) and the back plate (2); The clamping seat (3) is provided with a triangular opening (13). When the left clamp (5) and the right clamp (6) clamp the end of the steel pipe (8) and are dragged forward by the steel pipe (8), the left clamp (5) and the right clamp (6) are inserted into the opening (13) and lock the end of the steel pipe (8).

2. A three-wire cold drawing machine for stainless steel pipes as claimed in claim 1, characterized in that: There are three pairs of clamp bodies and openings (13).

3. A three-wire cold drawing machine for stainless steel pipes as claimed in claim 2, characterized in that: Two springs (12) are arranged on the back of the movable seat (4), and two ends of the two springs (12) are respectively connected to the movable seat (4) and the back plate (2).

4. A three-wire cold drawing machine for stainless steel pipes as claimed in claim 3, characterized in that: The back of the movable seat (4) is also provided with two guide rods (14), the back plate (2) is provided with guide holes corresponding to the guide rods (14), the guide rods (14) pass through the guide holes, and the two springs (12) are respectively sleeved on the corresponding guide rods (14).

5. A three-wire cold drawing machine for stainless steel pipes as claimed in claim 4, characterized in that: The front end of the movable seat (4) is provided with a slide groove (15), and the rear ends of the left clamp (5) and the right clamp (6) are respectively provided with sliders, and the two sliders are respectively slidably connected to the two sides of the slide groove (15).

6. A three-wire cold drawing machine for stainless steel pipes as claimed in claim 5, characterized in that: The back plate (2) is fixed to the base (1) by means of screws.

7. A three-wire cold drawing machine for stainless steel pipes as claimed in claim 6, characterized in that: The clamping seat (3) is a thickened clamping seat (3).

8. A three-wire cold drawing machine for stainless steel pipes as claimed in claim 7, characterized in that: The base (1) is fixed at the front end of the trolley.

9. A three-wire cold drawing machine for stainless steel pipes as claimed in claim 8, characterized in that: The rear end of the base (1) is also provided with a connecting portion (16); the base (1) is fixed to the front end of the trolley by means of fixing bolts; the connecting portion (16) of the base (1) is also connected to the connecting platform of the trolley.

10. A three-wire cold drawing machine for stainless steel pipes as claimed in claim 9, characterized in that: The front end of the base (1) is also provided with a platform (17), and the platform (17) is provided with an arc-shaped guide groove (18) corresponding to the end of the steel pipe (8).

Images