CN113305187A

CN113305187A - Stainless steel thin-wall square tube bending device and bending process

Info

Publication number: CN113305187A
Application number: CN202110581859.6A
Authority: CN
Inventors: 蔡建生; 蔡超伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-05-25
Filing date: 2021-05-25
Publication date: 2021-08-27
Anticipated expiration: 2041-05-25
Also published as: CN113305187B

Abstract

The invention provides a stainless steel thin-wall square tube bending device and a bending process, which comprise a rack, an extrusion block and a limit switch which are arranged on the rack and are arranged oppositely, a first driving mechanism for driving the extrusion block to move towards the limit switch, and two clamping mechanisms which are connected on the rack in a resetting type rotating manner and are symmetrically arranged; the clamping mechanism is located between the extrusion block and the limit switch, the clamping mechanism is provided with a transverse clamping groove and a limiting part, and the square tube is filled with an alloy steel spring. The stainless steel thin-wall square tube bending device and the bending process provided by the invention have the advantages that the process flow is simple, the full-automatic operation is realized, the time and the labor are saved, the bending treatment of the stainless steel thin-wall square tube can be completed only by one-time operation, the bending part of the stainless steel thin-wall square tube is flat and smooth, the continuity is good, the strength is high, the quality is good, the integrated structure of the anti-theft window can be realized, the welding operation is omitted, the safety of the anti-theft window is greatly improved, and the cost is reduced.

Description

Stainless steel thin-wall square tube bending device and bending process

Technical Field

The invention relates to the technical field of stainless steel pipes, in particular to a stainless steel thin-wall square pipe bending device and a bending process.

Background

Stainless steel pipe all can use in a lot of places, and it is corrosion-resistant, waterproof, anti-aging, light, simple to operate, so receive everybody's liking deeply, also appear often in a lot of places, for example burglary-resisting window, be exactly by many stainless steel pipe vertical and horizontal welding form, waste time and energy, the welding point is comparatively weak moreover, the security is relatively poor. Therefore, after the stainless steel pipe is manufactured, the stainless steel pipe needs to be bent according to actual requirements, and the stainless steel pipe has certain hardness, so that the bending effect is not good, particularly, in the bending process of the stainless steel thin-wall square pipe, the force is difficult to master, the force is too large, the surface is easy to dent, the surface lines are not smooth, and the bending forming cannot be realized if the force is too small.

Disclosure of Invention

The invention aims to disclose a stainless steel thin-wall square tube bending device which is simple in process flow, fully automatic in operation, time-saving and labor-saving, can finish bending treatment of a stainless steel thin-wall square tube by only one-time operation, and is flat and smooth in bent part, good in continuity, high in strength and good in quality, so that an integrated structure of an anti-theft window can be realized, welding operation is omitted, safety of the anti-theft window is greatly improved, and cost is reduced.

In order to achieve the purpose, the invention provides a stainless steel thin-wall square tube bending device which comprises a rack, an extrusion block and a limit switch, a first driving mechanism and two clamping mechanisms, wherein the extrusion block and the limit switch are arranged on the rack in a relative manner;

the device comprises an extrusion block, a clamping mechanism, a square tube and an alloy steel spring, wherein the extrusion block is provided with an arc-shaped extrusion groove, the clamping mechanism is positioned between the extrusion block and a limit switch, the clamping mechanism is provided with a transverse clamping groove for the square tube to pass through and a limit part for limiting the position of the square tube, and the square tube is filled with the alloy steel spring;

the first driving mechanism drives the extrusion block to move, the extrusion block pushes the clamping mechanism to rotate outwards, the square pipe is clamped into the arc-shaped extrusion groove, and the extrusion block continues to push the square pipe to move until the square pipe abuts against the limit switch.

In some embodiments, the clamping mechanism comprises a substrate, a transverse clamping seat connected to the upper part of the substrate, a first positioning part, a second positioning part, and a rotating shaft connected to the lower part of the substrate; the transverse clamping seat penetrates through the first positioning part, the second positioning part is connected with the transverse clamping seat through a tension spring, and a spring is extruded between the first positioning part and the second positioning part.

In some embodiments, the transverse clamping groove is disposed in the transverse clamping seat, the limiting member includes a blocking strip, a lifting pile, and a second driving mechanism for driving the lifting pile, the blocking strip is attached to the outer side of the square tube, and the lifting pile is located at the end of the substrate and is extruded on the outer side of the blocking strip.

In some embodiments, the barrier comprises a thin section and thick sections at both ends of the thin section, and the lift peg is extruded on the thick sections.

In some embodiments, a plurality of positioning holes are respectively formed at two ends of the transverse clamping seat.

In some embodiments, the rotating shaft is hinged on the frame and provided with a return spring, one end of the return spring is connected with the rotating shaft, and the other end of the return spring is connected with the frame.

In some embodiments, the inner wall of the arc-shaped extrusion groove is connected with an elastic sheet with two ends extending outwards.

In some embodiments, the extrusion block is semicircular, and the arc-shaped extrusion groove is a semicircular extrusion groove.

In some embodiments, the centerline of the expression block and the centerline of the limit switch overlap, and the axes of symmetry of the two clamping mechanisms and the centerline of the expression block overlap.

The invention aims to disclose a stainless steel thin-wall square tube bending process, which has the advantages of simple process flow, full-automatic operation, time and labor saving, can finish the bending treatment of the stainless steel thin-wall square tube by only one-time operation, and has the advantages of flat and smooth bending part, good continuity, high strength and good quality, thereby realizing the integrated structure of the security window, omitting welding operation, greatly improving the security of the security window and reducing the cost.

In order to achieve the aim, the invention provides a stainless steel thin-wall square tube bending process, which comprises the following steps:

the method comprises the following steps: an alloy steel spring is plugged into the square tube;

step two: fixing the square tube: the square tube is plugged into the transverse clamping groove, the barrier strip is attached to the outer side of the square tube and arranged, the second driving mechanism extends, and the lifting pile is extruded on the outer side of the barrier strip;

step three: bending the square tube: the first driving mechanism drives the extrusion block to move towards the limit switch, the extrusion block contacts the square pipe in the moving process, the middle part of the square pipe is separated from the transverse clamping groove under the pushing of the extrusion block, the extrusion block continues to move, the square pipe is extruded into the arc-shaped extrusion groove, the extrusion block pushes the square pipe to continue to move, the square pipe is gradually bent in the moving process until the square pipe is abutted against the limit switch, the first driving mechanism retracts and resets, and the square pipe is separated from the arc-shaped extrusion groove;

step four: the second driving mechanism retracts and resets, the barrier strip and the square tube are sequentially taken out, and then the alloy steel spring is taken out to obtain the bent tube.

Compared with the prior art, the invention has the beneficial effects that: the stainless steel thin-wall square tube bending device and the bending process provided by the invention have the advantages that the process flow is simple, the full-automatic operation is realized, the time and the labor are saved, the bending treatment of the stainless steel thin-wall square tube can be completed only by one-time operation, the bending part of the stainless steel thin-wall square tube is flat and smooth, the continuity is good, the strength is high, the quality is good, the integrated structure of the anti-theft window can be realized, the welding operation is omitted, the safety of the anti-theft window is greatly improved, and the cost is reduced.

Drawings

FIG. 1 is a schematic structural view of a stainless steel thin-wall square tube bending device according to the present invention;

FIG. 2 is a side view of the clamping mechanism shown in FIG. 1;

FIG. 3 is a schematic view of the connection structure between the clamping mechanism and the frame shown in FIG. 1;

FIG. 4 is a schematic view of a portion of the structure of FIG. 3;

FIG. 5 is a schematic view of the construction of the extrusion block shown in FIG. 1;

fig. 6 is a schematic structural view of a bent square tube.

Detailed Description

The present invention is described in detail with reference to the embodiments shown in the drawings, but it should be understood that these embodiments are not intended to limit the present invention, and those skilled in the art should understand that functional, methodological, or structural equivalents or substitutions made by these embodiments are within the scope of the present invention.

The first embodiment is as follows:

the stainless steel thin-wall square tube bending device shown in fig. 1-6 comprises a frame 1, an extrusion block 2 and a limit switch 6 which are arranged on the frame 1 and are arranged oppositely, a first driving mechanism 22 for driving the extrusion block 2 to move towards the limit switch 6, and two clamping mechanisms 8 which are connected on the frame 1 in a resetting manner in a rotating mode and are arranged symmetrically.

The first drive mechanism 22 is a pneumatic or hydraulic cylinder, and is preferably a hydraulic cylinder. The first driving mechanism 22 is fixedly connected to the frame 1. The extrusion block 2 is connected on the frame 1 in a sliding way, so that the sliding direction of the extrusion block 2 is ensured. The limit switch 6 is fixedly connected to the frame 1.

The extrusion block 2 is formed with an arc-shaped extrusion groove 20. The extrusion block 2 is semicircular, and the arc extrusion groove 20 is a semicircular extrusion groove, so that the square tube 3 can be extruded and formed. The wall thickness of the square tube 3 is 0.4 mm.

The inner wall of the arc-shaped extrusion groove 20 is connected with an elastic sheet 21 with two ends extending outwards, and the elastic sheet 21 has good rebound resilience and is made of a metal sheet. The connection point of the elastic sheet 21 and the arc-shaped extrusion groove 20 is positioned on the central line of the extrusion block 2.

Under normal conditions, shell fragment 21 and arc extrusion groove 20 inner wall are the separation, and when square pipe 3 extrudeed in arc extrusion groove 20, square pipe 3 can extrude shell fragment 21 and the close laminating of arc extrusion groove 20 inner wall, and there is the outside effort to square pipe 3 simultaneously shell fragment 21. When square pipe 3 and extrusion piece 2 need separate, shell fragment 21 plays supplementary separation effect, prevents that square pipe 3 card can't break away from in arc extrusion groove 20.

The clamping mechanism 8 is positioned between the extrusion block 2 and the limit switch 6. The center line of the extrusion block 2 is overlapped with the center line of the limit switch 6, and the symmetry axes of the two clamping mechanisms 8 are overlapped with the center line of the extrusion block 2.

The clamping mechanism 8 is formed with a transverse slot 51 through which the square tube 3 passes and a stopper for limiting the position of the square tube 3. Specifically, the clamping mechanism 8 includes a substrate 4, a transverse clamping seat 5 connected to an upper portion of the substrate 4, a first positioning member 41, a second positioning member 42, and a rotating shaft 45 connected to a lower portion of the substrate 4.

The two ends of the transverse clamping seat 5 are respectively provided with a plurality of positioning holes 50, and the transverse clamping seat 5 is connected to the base plate 4 through the positioning holes, so that the position of the transverse clamping seat 5 can be adjusted to adapt to fixing the square pipes 3 with different lengths.

The transverse clamping seat 5 passes through the first positioning part 41, the second positioning part 42 is connected with the transverse clamping seat 5 through a tension spring 44, and a spring 43 is pressed between the first positioning part 41 and the second positioning part 42, so that the relative positions of the transverse clamping seat 5, the first positioning part 41 and the second positioning part 42 are conveniently limited.

The transverse clamping groove 51 is arranged in the transverse clamping seat 5, and the square tube 3 is clamped in the transverse clamping groove 51. The limiting member comprises a barrier 31, a lifting pile 32 and a second driving mechanism 321 for driving the lifting pile 32. The second driving mechanism 321 is an air cylinder or a hydraulic cylinder, and preferably a hydraulic cylinder, and the second driving mechanism 321 is connected to the base plate 4.

The blend stop 31 is in the side of square pipe 3 outsides, plays the guard action to square pipe 3, prevents 3 surperficial fish tails on square pipe, realizes the indirect bending to square pipe 3. The lifting pile 32 is located at the end of the base plate 4 and extrudes outside the barrier strip 31, so that the square tube 3 is fixed, and the square tube 3 is prevented from being separated from the transverse clamping groove 51. The first positioning member 41 extends out of the edge of the transverse clamping seat 5, so that the barrier strip 31 can be clamped below the first positioning member 41, and the fixing is facilitated.

The barrier 31 comprises a thin section 311 and thick sections 312 positioned at two ends of the thin section 311, the lifting pile 32 is extruded on the thick sections 312, and the thick sections 312 are not easy to deform, so that the square pipe 3 is well protected. Thin section 311 laminating side's 3 interlude of pipe to both play the effect of protection side's pipe 3, do not hinder the crooked of side's pipe 3 again.

The rotating shaft 45 is hinged to the rack 1 and provided with a return spring 7, one end of the return spring 7 is connected with the rotating shaft 45, and the other end of the return spring 7 is connected with the rack 1. Specifically, a positioning column 11 is arranged on the rack 1, a sleeve body 451 is arranged on the rotating shaft 45, the sleeve body 451 is sleeved outside the positioning column 11, a return spring 7 is sleeved outside the positioning column 11 and inside the sleeve body 451, one end of the return spring 7 is connected with the sleeve body 451, and the other end of the return spring 7 is connected with the positioning column 11. When the rotating shaft 45 rotates under the action of external force, the return spring 7 is twisted, and when the external force disappears, the rotating shaft 45 resets under the action of the return spring 7.

The alloy steel spring 30 is plugged into the square tube 3, and the alloy steel spring 30 is attached to the inner wall of the square tube 3 to play an inner supporting role. Alloy steel spring 30 has high strength and high elasticity, and alloy steel spring 30 and square pipe 3 can be crooked in step to play outside supporting role all the time to square pipe 3, on the one hand, can prevent square pipe 3 and be extrudeed sunken deformation, on the other hand, can prevent that the thin wall of square pipe 3 is sunken in, make 3 outer walls in the side of pipe and the inseparable laminating of arc extrusion groove 20 inner wall, thereby make the flexion of square pipe 3 level and smooth, the continuity is good, and the quality is good.

The stainless steel thin-wall square tube bending device has the following working process:

the square pipe 3 is plugged into the transverse clamping groove 51, the barrier strip 31 is attached to the outer side of the square pipe 3 to be arranged, the second driving mechanism 321 extends, and the lifting pile 32 is extruded on the outer side of the barrier strip 31.

The first driving mechanism 22 drives the extrusion block 2 to move towards the limit switch 6, in the moving process, the extrusion block 2 contacts the barrier strip 31, under the pushing of the extrusion block 2, the two clamping mechanisms 8 rotate outwards to be opened as shown by arrows in fig. 1, the middle parts of the barrier strip 31 and the square pipe 3 are separated from the transverse clamping groove 51, the extrusion block 2 continues to move, the barrier strip 31 and the square pipe 3 are extruded into the arc-shaped extrusion groove 20, the extrusion block 2 pushes the square pipe 3 to continue to move, in the moving process, the square pipe 3 is gradually bent until the square pipe 3 abuts against the limit switch 6, the first driving mechanism 22 retracts and resets, the square pipe 3 is separated from the arc-shaped extrusion groove 20, the second driving mechanism 321 retracts and resets, the barrier strip 31 and the square pipe 3 are sequentially taken out, and under the action of the reset spring 7, the clamping mechanisms 8 reset.

Example two:

the embodiment discloses a stainless steel thin-wall square tube bending process, which comprises the following steps:

the method comprises the following steps: an alloy steel spring 30 is plugged into the square tube 3;

step two: fix square pipe 3: the square tube 3 is plugged into the transverse clamping groove 51, the barrier strip 31 is attached to the outer side of the square tube 3 to be arranged, the second driving mechanism 321 extends, and the lifting pile 32 is extruded on the outer side of the barrier strip 31;

step three: bending the square tube 3: the first driving mechanism 22 drives the extrusion block 2 to move towards the limit switch 6, in the moving process, the extrusion block 2 contacts the square pipe 3, the middle part of the square pipe 3 is separated from the transverse clamping groove 51 under the pushing of the extrusion block 2, the extrusion block 2 continues to move, the square pipe 3 is extruded into the arc extrusion groove 20, the extrusion block 2 pushes the square pipe 3 to continue to move, in the moving process, the square pipe 3 is gradually bent until the square pipe 3 is abutted against the limit switch 6, the first driving mechanism 22 retracts and resets, and the square pipe 3 is separated from the arc extrusion groove 20;

step four: the second driving mechanism 321 retracts and resets, the barrier strip 31 and the square tube 3 are sequentially taken out, and the alloy steel spring 30 is taken out to obtain the bent tube.

The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The stainless steel thin-wall square tube bending device is characterized by comprising a rack (1), an extrusion block (2) and a limit switch (6) which are arranged on the rack (1) in a relative manner, a first driving mechanism (22) for driving the extrusion block (2) to move towards the limit switch (6), and two clamping mechanisms (8) which are connected to the rack (1) in a resetting manner in a rotating manner and are symmetrically arranged;

an arc-shaped extrusion groove (20) is formed in the extrusion block (2), the clamping mechanism (8) is located between the extrusion block (2) and the limit switch (6), a transverse clamping groove (51) for the square tube (3) to pass through and a limit part for limiting the position of the square tube (3) are formed in the clamping mechanism (8), and an alloy steel spring (30) is plugged in the square tube (3);

the first driving mechanism (22) drives the extrusion block (2) to move, the extrusion block (2) pushes the clamping mechanism (8) to rotate outwards, the square pipe (3) is clamped into the arc-shaped extrusion groove (20), and the extrusion block (2) continues to push the square pipe (3) to move until the square pipe (3) abuts against the limit switch (6).

2. The stainless steel thin-wall square tube bending device according to claim 1, wherein the clamping mechanism (8) comprises a base plate (4), a transverse clamping seat (5) connected to the upper part of the base plate (4), a first positioning piece (41), a second positioning piece (42), and a rotating shaft (45) connected to the lower part of the base plate (4); the transverse clamping seat (5) penetrates through the first positioning part (41), the second positioning part (42) is connected with the transverse clamping seat (5) through a tension spring (44), and a spring (43) is extruded between the first positioning part (41) and the second positioning part (42).

3. The stainless steel thin-walled square tube bending device according to claim 2, wherein the transverse clamping groove (51) is arranged in the transverse clamping seat (5), the limiting member comprises a blocking strip (31), a lifting pile (32) and a second driving mechanism (321) for driving the lifting pile (32), the blocking strip (31) is attached to the outer side of the square tube (3), and the lifting pile (32) is located at the end of the base plate (4) and is extruded to the outer side of the blocking strip (31).

4. The stainless steel thin-walled square tube bending device according to claim 3, wherein the barrier strip (31) comprises a thin section (311) and thick sections (312) at two ends of the thin section (311), and the lifting piles (32) are extruded on the thick sections (312).

5. The stainless steel thin-wall square tube bending device according to claim 2, wherein a plurality of positioning holes (50) are respectively arranged at two ends of the transverse clamping seat (5).

6. The stainless steel thin-wall square tube bending device according to claim 2, wherein the rotating shaft (45) is hinged on the frame (1) and provided with a return spring (7), one end of the return spring (7) is connected with the rotating shaft (45), and the other end of the return spring (7) is connected with the frame (1).

7. The stainless steel thin-walled square tube bending device according to claim 1, wherein the inner wall of the arc-shaped extrusion groove (20) is connected with a spring plate (21) with two ends extending outwards.

8. The stainless steel thin-walled square tube bending device according to claim 1, wherein the extrusion block (2) is semicircular, and the arc-shaped extrusion groove (20) is a semicircular extrusion groove.

9. The stainless steel thin-wall square tube bending device according to claim 1, wherein the center line of the extrusion block (2) is overlapped with the center line of the limit switch (6), and the symmetry axes of the two clamping mechanisms (8) are overlapped with the center line of the extrusion block (2).

10. The stainless steel thin-wall square tube bending process is characterized by comprising the following steps of: