Diameter expanding treatment device for seamless stainless steel pipe production

Abstract

The utility model discloses a diameter expansion processing device for seamless stainless steel pipe production, which comprises a base, a plurality of guide grooves arranged at the front end of the base and a diameter expansion mechanism arranged at the rear end of the base, a push block capable of moving back and forth is arranged in the base, the top of the push block is provided with a top block and a convex column, and the top block and the convex column protrude out of long grooves in the guide grooves. The expanding mechanism comprises a plurality of rod bodies rotationally connected to the mounting base and an expanding head, the mounting base is further connected with a plurality of first gear motors, output shafts of the first gear motors are connected with the corresponding rod bodies, the front ends of the guide grooves are spaced from the expanding head, and heating devices are further arranged at the front ends of the guide grooves; according to the utility model, the processing efficiency and the expanding precision are relatively high, and the manufacturing cost of equipment is relatively low.

Description

Technical Field

[0001] The utility model relates to a diameter expansion processing device for producing seamless stainless steel pipes. Background Art

[0002] In the prior art, a seamless stainless steel pipe device generally includes a support and a trolley. One end of the steel pipe is fixed on the support. A rod body and an expanding head are arranged on the trolley. The trolley moves toward the steel pipe driven by a transmission chain. The expanding head is inserted into the steel pipe to expand the diameter of the steel pipe. This device can only process one steel pipe at a time, and has the disadvantage of low efficiency. Utility Model Content

[0003] The utility model aims to overcome the above-mentioned deficiencies of the prior art and provide a more efficient diameter expansion processing device for the production of seamless stainless steel pipes.

[0004] The technical solution of the utility model is: a diameter expansion processing device for seamless stainless steel pipe production, comprising a base, a plurality of guide grooves arranged at the front end of the base and a diameter expansion mechanism arranged at the rear end of the base;

[0005] The base is also provided with a push block that moves forward and backward along the guide groove and a driving mechanism that drives the push block to move. Each of the guide grooves has a long groove in the middle, and the top of the push block has a top block and a convex column corresponding to each long groove. The top block and the convex column protrude from the long groove. The expanded steel pipe is arranged in the guide groove, and the rear end of the steel pipe abuts against the top block. The rear end of the steel pipe is also preset with a hole, and the convex column is inserted into the hole.

[0006] The diameter expansion mechanism includes a plurality of rod bodies rotatably connected to the mounting seat and a plurality of diameter expansion heads respectively fixed to the ends of the rod bodies. The mounting seat is also connected to a plurality of first reduction motors, and the output shaft of each of the first reduction motors is connected to the corresponding rod body. The front end of each of the guide grooves maintains a distance from the diameter expansion head.

[0007] The front end of each guide groove is also provided with a heating device.

[0008] Furthermore, a hydraulic cylinder is fixed to the rear end of the base, the mounting seat is arranged on a movable seat, the piston rod of the hydraulic cylinder is connected to the movable seat, and a guide rail corresponding to the movable seat is also arranged on the base.

[0009] Furthermore, the corresponding guide grooves, enlarging heads and rod bodies are coaxially arranged.

[0010] Furthermore, the driving mechanism includes two transmission shafts, two transmission chains connected between the two transmission shafts and a second reduction motor. The two transmission shafts and transmission chains are arranged in the base, the second reduction motor is arranged on the outside of the base and connected to one of the two transmission shafts, the bottom of the push block is fixed to the two transmission chains, and a slider is respectively provided on both sides of the push block. The base has sliding grooves corresponding to the sliders on both sides, and the two sliders are respectively slidably connected in the corresponding sliding grooves.

[0011] Furthermore, a plurality of supporting blocks are provided on the base below each of the rod bodies at equal distances, the front and rear sides of the top of the supporting block are inclined surfaces respectively, and the top of the supporting block also has an arc groove.

[0012] Specifically, the heating device is an induction coil.

[0013] Furthermore, the induction coil is arranged in a frame with open front and rear ends.

[0014] Furthermore, a heat reflection layer is provided in the frame.

[0015] Furthermore, it also includes a shield, which is arranged at the rear end of the base and covers each rod body and the expansion head.

[0016] Furthermore, the shield is openably connected to the base.

[0017] The beneficial effects of the utility model are as follows: the utility model can simultaneously expand the diameters of a plurality of seamless stainless steel pipes with high processing efficiency; the seamless stainless steel pipe is displaced along the guide groove under the action of the push block, and is not prone to shaking during the expansion process, which is beneficial to improving the expansion accuracy; the seamless stainless steel pipe is first heated by the heating device and then expanded, which makes the expansion easier, reduces the requirements for the thrust of the push block, and reduces the manufacturing cost of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the support block in the utility model;

[0020] Figure 3 It is a structural schematic diagram of the heating device in the utility model.

[0021] In the figure: base 1, guide groove 2, push block 3, long groove 4, top block 5, boss 6, steel pipe 8, mounting seat 9, rod body 10, enlarging head 11, first reduction motor 12, heating device 13, hydraulic cylinder 14, moving seat 15, guide rail 16, transmission chain 17, second reduction motor 18, slider 19, support block 20, arc groove 21, frame 22, heat reflection layer 23, induction coil 24. DETAILED DESCRIPTION

[0022] The technical solution of the utility model is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0023] like Figure 1 As shown, a diameter expansion processing device for seamless stainless steel pipe production includes a base 1, a plurality of guide grooves 2 arranged at the front end of the base 1, and a diameter expansion mechanism arranged at the rear end of the base 1;

[0024] The base 1 is also provided with a push block 3 that moves forward and backward along the guide groove 2 and a driving mechanism that drives the push block 3 to move. Each of the guide grooves 2 has a long groove 4 in the middle. The top of the push block 3 has a top block 5 and a convex column 6 corresponding to each long groove 4. The top block 5 and the convex column 6 are protruded from the long groove 4. The expanded steel pipe 8 is arranged in the guide groove 2. The rear end of the steel pipe 8 is in contact with the top block 5. The rear end of the steel pipe 8 is also preset with a hole, and the convex column 6 is inserted into the hole.

[0025] The diameter expansion mechanism includes a plurality of rod bodies 10 rotatably connected to the mounting seat 9 and a plurality of diameter expansion heads 11 respectively fixed to the ends of the rod bodies 10. The mounting seat 9 is also connected to a plurality of first reduction motors 12, and the output shaft of each of the first reduction motors 12 is connected to the corresponding rod body 10. The front end of each of the guide grooves 2 is spaced apart from the diameter expansion head 11.

[0026] A heating device 13 is also provided at the front end of each guide groove 2 .

[0027] The working principle of the above structure is: the operator places a plurality of pre-punched steel pipes 8 into the guide groove 2, adjusts the position of the steel pipe 8 so that the rear end of the steel pipe 8 abuts against the top block 5, the boss 6 is inserted into the hole, and then starts the equipment; each steel pipe 8 is displaced toward the rear end of the base 1 driven by the push block 3, is heated when passing through the heating device 13, and then abuts against the rotating expanding head 11, and the expanding head 11 is rotated and inserted into the steel pipe 8 to expand the steel pipe 8; after the expansion is completed, the push block 3 drives the steel pipe 8 to reset, and after the steel pipe 8 is slightly cooled, the steel pipe 8 is pulled out of the guide groove 2 by a clamp, and then the pre-punched and unexpanded part of the steel pipe 8 is cut off to complete the processing.

[0028] The beneficial effects of the above structure are: multiple seamless stainless steel pipes can be expanded at the same time with high processing efficiency; the seamless stainless steel pipe is displaced along the guide groove 2 under the action of the push block 3, and it is not easy to shake during the expansion process, which is beneficial to improving the expansion accuracy; the seamless stainless steel pipe is first heated by the heating device 13 and then expanded, which makes the expansion easier, and can reduce the thrust requirements of the push block 3, which can reduce the manufacturing cost of the equipment.

[0029] In another embodiment, if Figure 1As shown, a hydraulic cylinder 14 is also fixed to the rear end of the base 1, the mounting seat 9 is arranged on a movable seat 15, the piston rod of the hydraulic cylinder 14 is connected to the movable seat 15, and the base 1 is also provided with a guide rail 16 corresponding to the movable seat 15; the purpose of setting this structure is that when the steel pipe 8 is expanded and moved backward under the drive of the push block 3, the piston rod of the hydraulic cylinder 14 is intermittently extended and retracted to assist the expansion head 11 to separate from the inner wall of the steel pipe 8, thereby avoiding the expansion head 11 from being stuck in the steel pipe 8 and ensuring the expansion accuracy of the steel pipe 8.

[0030] In another embodiment, if Figure 1 As shown, the corresponding guide grooves 2, enlarging heads 11 and rod bodies 10 are coaxially arranged.

[0031] In another embodiment, if Figure 1 As shown, the driving mechanism includes two transmission shafts, two transmission chains 17 connected between the two transmission shafts and a second reduction motor 18. The two transmission shafts and the transmission chain 17 are arranged in the base 1, and the second reduction motor 18 is arranged on the outside of the base 1 and connected to one of the two transmission shafts. The bottom of the push block 3 is fixed to the two transmission chains 17, and a slider 19 is provided on both sides of the push block 3. The base 1 has sliding grooves corresponding to the sliders 19 on both sides, and the two sliders 19 are slidably connected in the corresponding sliding grooves to ensure that the driving mechanism can smoothly drive the push block 3, and the push block 3 is not prone to displacement and shaking during the displacement process.

[0032] In another embodiment, in combination Figure 1 and Figure 2 As shown, there are a plurality of support blocks 20 at equal distances on the base 1 below each of the rod bodies 10, and the front and rear sides of the top of the support block 20 are inclined surfaces respectively to facilitate the passage of the steel pipe 8. The top of the support block 20 also has an arc groove 21 for supporting the steel pipe 8 after the diameter expansion. Each of the support blocks 20 is a detachable structure, and a suitable support block 20 can be replaced according to the steel pipe 8 of different specifications.

[0033] In another embodiment, the heating device 13 is an induction coil 24 .

[0034] In another embodiment, if Figure 3 As shown, the induction coil 24 is disposed in a frame 22 with open front and rear ends to avoid accidents such as scalding the operator.

[0035] In another embodiment, if Figure 3 As shown, a heat reflection layer 23 is further provided in the frame 22 to improve the efficiency of the induction coil 24 in heating the steel pipe 8 .

[0036] In another embodiment, a protective cover is further included, which is arranged at the rear end of the base 1 and covers each rod body 10 and the expansion head 11 to prevent foreign matter from falling into and affecting the expansion of the steel pipe 8, and to avoid accidents such as burns.

[0037] In another embodiment, the shield is openably connected to the base 1 to facilitate regular maintenance and repair of the device.

Claims

1. A diameter expansion device for producing seamless stainless steel pipes, characterized in that: The invention comprises a base (1), a plurality of guide grooves (2) arranged at the front end of the base (1), and a diameter expansion mechanism arranged at the rear end of the base (1); the base (1) is also provided with a push block (3) which moves forward and backward along the guide groove (2), and a driving mechanism which drives the push block (3) to move; Each of the guide grooves (2) has a long groove (4) in the middle, and the top of the push block (3) has a top block (5) and a convex column (6) corresponding to each of the long grooves (4). The top block (5) and the convex column (6) are protruding from the long groove (4). The expanded steel pipe (8) is arranged in the guide groove (2), and the rear end of the steel pipe (8) is in contact with the top block (5). The rear end of the steel pipe (8) is also preset with a hole, and the convex column (6) is inserted into the hole. The diameter expansion mechanism comprises a plurality of rod bodies (10) rotatably connected to a mounting seat (9) and a plurality of diameter expansion heads (11) respectively fixed to the ends of the rod bodies (10); the mounting seat (9) is also connected to a plurality of first reduction motors (12); the output shaft of each of the first reduction motors (12) is connected to the corresponding rod body (10); and the front end of each of the guide grooves (2) maintains a spacing from the diameter expansion head (11); A heating device (13) is also provided at the front end of each guide groove (2).

2. A diameter expansion processing device for producing seamless stainless steel pipes as claimed in claim 1, characterized in that: A hydraulic cylinder (14) is also fixed at the rear end of the base (1); the mounting seat (9) is arranged on a movable seat (15); a piston rod of the hydraulic cylinder (14) is connected to the movable seat (15); and a guide rail (16) corresponding to the movable seat (15) is also provided on the base (1).

3. A diameter expansion processing device for producing seamless stainless steel pipes as claimed in claim 2, characterized in that: The corresponding guide grooves (2), the enlarging heads (11) and the rod bodies (10) are coaxially arranged.

4. A diameter expansion device for producing seamless stainless steel pipes as claimed in claim 3, characterized in that: The driving mechanism comprises two transmission shafts, two transmission chains (17) connected between the two transmission shafts, and a second reduction motor (18); the two transmission shafts and the transmission chain (17) are arranged in the base (1); the second reduction motor (18) is arranged outside the base (1) and connected to one of the two transmission shafts; the bottom of the push block (3) is fixed to the two transmission chains (17); two sides of the push block (3) are respectively provided with a slider (19); the two sides of the base (1) are respectively provided with a slide groove corresponding to the slider (19); the two sliders (19) are respectively slidably connected in the corresponding slide grooves.

5. A diameter expansion processing device for producing seamless stainless steel pipes as claimed in claim 4, characterized in that: A plurality of support blocks (20) are also provided at equal distances on the base (1) below each of the rod bodies (10), the front and rear sides of the top of the support block (20) are inclined surfaces respectively, and the top of the support block (20) also has an arc groove (21).

6. A diameter expansion device for producing seamless stainless steel pipes as claimed in claim 5, characterized in that: The heating device (13) is an induction coil (24).

7. A diameter expansion device for producing seamless stainless steel pipes as claimed in claim 6, characterized in that: The induction coil (24) is arranged in a frame (22) with open front and rear ends.

8. A diameter expansion device for producing seamless stainless steel pipes as claimed in claim 7, characterized in that: A heat reflection layer (23) is also provided in the frame (22).

9. A diameter expansion device for producing seamless stainless steel pipes as claimed in claim 8, characterized in that: It also comprises a protective cover, which is arranged at the rear end of the base (1) and covers each rod body (10) and the expansion head (11) therein.

10. A diameter expansion device for producing seamless stainless steel pipes as claimed in claim 9, characterized in that: The protective cover is openably connected to the base (1).

Images