Quick opening device of metal tube and bar precision straightening machine

Abstract

The utility model discloses a quick opening device of a metal tube bar precision straightening machine, and belongs to the technical field of straightening machines. The straightening device mainly comprises a base, a top table is arranged on the upper side of the base, a plurality of supporting tables are arranged between the two ends of the upper side of the base and the two ends of the lower side of the top table, straightening rollers are rotationally arranged on the opposite sides of the supporting tables on the two sides, and rotating shafts corresponding to the supporting tables in position are arranged on the top table and the base; the other end of the rotating shaft is movably sleeved with a shaft sleeve, the shaft sleeves on the two sides are fixedly connected with the top table and the base correspondingly, lifting grooves are formed in the inner sides of the shaft sleeves, the outer wall, located in the lifting grooves, of the rotating shaft is fixedly sleeved with a lifting plate, and the two ends, close to and away from the supporting table, of the shaft sleeves are provided with an avoiding hole and an extrusion hole correspondingly. The receding hole and the extrusion hole communicate with the interior of the lifting groove. The quick-opening device of the metal tube and bar precision straightening machine achieves the effect of improving the machining efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of straightening machines, and more specifically to a quick-opening device for a precision straightening machine for metal tubes and bars. Background Art

[0002] Straightening machines are equipment for straightening metal profiles, bars, pipes, wires, etc. Straightening machines use the concave surface of the straightening roller to squeeze the bars to change their straightness. Generally, there are two rows of straightening rollers, with varying numbers.

[0003] However, the oil pipe in the prior art is provided with a trumpet-shaped opening at one end, so the straightening roller needs to have a moving function to avoid the opening. In the prior art, a threaded rod is usually used for movement, but this moving method is slow and reduces the processing efficiency.

[0004] Therefore, it is necessary to provide a quick-opening device for a metal tube and bar precision straightening machine to solve the above problems. Utility Model Content

[0005] Based on the above-mentioned problems existing in the prior art, the purpose of the embodiments of the present application is to provide a quick-opening device for a precision straightening machine for metal tubes and bars, so as to achieve the effect of improving processing efficiency.

[0006] The technical solution adopted by the present application to solve its technical problems is: a quick-opening device of a precision straightening machine for metal tubes and bars, comprising a base, a top platform is arranged on the upper side of the base, and a plurality of support platforms are arranged between the two ends of the upper side of the base and the lower side of the top platform, and straightening rollers are rotatably arranged on the opposite sides of the support platforms on both sides, and a rotating shaft corresponding to the position of the support platform is arranged on the top platform and the base, one end of the rotating shaft is threadedly connected to the support platform, and a movable sleeve is arranged on the other end of the rotating shaft, and the sleeves on both sides are fixedly connected to the top platform and the base respectively, a lifting groove is arranged on the inner side of the sleeve, and a lifting plate is arranged on the fixed sleeve of the outer wall of the rotating shaft located in the lifting groove, the circumferential side wall of the lifting plate is matched with the circumferential inner wall of the lifting groove, the thickness of the lifting plate is less than the thickness of the lifting groove, and avoidance holes and extrusion holes are respectively arranged at the two ends of the sleeve close to and away from the support platform, and the avoidance holes and extrusion holes are both connected to the lifting groove.

[0007] Furthermore, a plurality of guide shafts are connected between the base and the top platform, and both ends of the support platform are slidably connected to a guide shaft respectively.

[0008] Furthermore, a plurality of limiting shafts are distributed circumferentially at one end of the sleeve away from the support platform, one end of the limiting shaft passes through one end of the sleeve and extends into the lifting groove, and the limiting shaft is threadedly connected to the sleeve.

[0009] Furthermore, a driving shaft is fixed to one end of the limiting shaft away from the lifting plate, the cross section of the driving shaft is polygonal, a passive gear matching with the driving shaft is sleeved on the driving shaft, and the passive gear is rotatably connected to the shaft sleeve.

[0010] Furthermore, one end of the sleeve away from the support platform is rotatably connected to a rotating ring, the inner wall and the outer wall of the rotating ring are provided with teeth, the passive gears are meshed with the teeth of the inner wall of the rotating ring, the teeth of the outer wall of the rotating ring are meshed with a driving wheel, the driving wheels on both sides are rotatably connected to the base and the top platform respectively, the base and the top platform are fixed with drivers, and the output shaft of the driver is fixed to the driving wheel.

[0011] The beneficial effects of the utility model are:

[0012] 1. The movement of the support table driven by the rotating shaft is slow, but the required parts are relatively simple. It is mainly used to adjust the support table over a large range when the processed pipe and bar materials change, and reduces the number of parts related to the structure of the hydraulic oil adjustment support table position, saving costs;

[0013] 2. The movement of the support table driven by hydraulic oil is faster, but the required parts have higher precision. By using it only in a smaller moving range, it is mainly used to avoid the opening of the tube and bar during processing. When the opening of the tube and bar passes through the straightening roller, the straightening roller is quickly reset to ensure the overall straightening of the straightening roller and improve the processing speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings constituting part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0015] Figure 1 It is an overall schematic diagram of a quick-opening device of a metal tube and bar precision straightening machine in this application;

[0016] Figure 2 for Figure 1 Schematic diagram of the internal structure of the middle shaft sleeve;

[0017] In the figure:

[0018] 1. Base; 11. Top platform; 12. Guide shaft;

[0019] 2. Support table; 21. Straightening roller;

[0020] 3. Rotating axis; 31. Lifting plate;

[0021] 4. Bushing; 41. Lifting groove; 42. Avoidance hole; 43. Extrusion hole; 44. Limiting shaft; 45. Driving shaft; 46. Passive gear; 47. Rotating ring; 48. Driving wheel; 49. Driver. DETAILED DESCRIPTION

[0022] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0023] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0024] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually relative to the directions shown in the drawings, or relative to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually relative to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0025] like Figure 1-2 As shown, the present application provides a quick-opening device for a precision straightening machine for metal tubes and bars, comprising a base 1, a top platform 11 is arranged on the upper side of the base 1, and a plurality of guide shafts 12 are connected between the base 1 and the top platform 11.

[0026] A plurality of support platforms 2 (only one group is shown in the figure) are arranged between the upper side of the base 1 and the lower side of the top platform 11. The two ends of the support platforms 2 are respectively slidably connected to a guide shaft 12. The support platforms 2 on the upper side of the base 1 correspond to the support platforms 2 on the lower side of the top platform 11. Straightening rollers 21 are rotatably arranged on the opposite sides of the support platforms 2.

[0027] The top platform 11 and the base 1 are both provided with a rotating shaft 3 corresponding to the position of the support platform 2, one end of the rotating shaft 3 is threadedly connected to the support platform 2, and the other end of the rotating shaft 3 is movably sleeved with a sleeve 4, and the sleeve 4 is respectively fixedly connected to the top platform 11 and the base 1. A lifting groove 41 is provided on the inner side of the sleeve 4, and a lifting plate 31 is fixedly sleeved on the outer wall of the rotating shaft 3 located in the lifting groove 41, and the circumferential side wall of the lifting plate 31 is adapted to the circumferential inner wall of the lifting groove 41, and the thickness of the lifting plate 31 is less than the thickness of the lifting groove 41.

[0028] The two ends of the sleeve 4 close to and away from the support platform 2 are respectively provided with an avoidance hole 42 and an extrusion hole 43. The avoidance hole 42 and the extrusion hole 43 are both connected to the lifting groove 41. It can be understood that the avoidance hole 42 and the extrusion hole 43 are both connected to an external hydraulic oil system (not shown).

[0029] A plurality of limiting shafts 44 are distributed circumferentially at one end of the sleeve 4 away from the support platform 2 . One end of the limiting shaft 44 passes through one end of the sleeve 4 and extends into the lifting groove 41 . The limiting shaft 44 is threadedly connected to the sleeve 4 .

[0030] A driving shaft 45 is fixed to one end of the limiting shaft 44 away from the lifting plate 31. The cross section of the driving shaft 45 is polygonal. In this embodiment, the cross section of the driving shaft 45 is hexagonal. A passive gear 46 adapted thereto is sleeved on the driving shaft 45, and the passive gear 46 is rotatably connected to the shaft sleeve 4.

[0031] The end of the sleeve 4 away from the support platform 2 is rotatably connected to a rotating ring 47, and the inner wall and outer wall of the rotating ring 47 are both provided with teeth, and the passive gears 46 are meshed with the teeth of the inner wall of the rotating ring 47. The teeth of the outer wall of the rotating ring 47 are meshed with a driving wheel 48, and the driving wheel 48 is rotatably connected to the base 1 and the top platform 11 respectively. A driver 49 is fixed to the base 1 and the top platform 11. In this embodiment, the driver 49 is a motor, and the output shaft of the driver 49 is fixed to the driving wheel 48.

[0032] It can be understood that both the base 1 and the top platform 11 are provided with a driving device (not shown) for driving the rotating shaft 3 to rotate. When the rotating shaft 3 rotates, the threaded connection between the rotating shaft 3 and the support platform 2 can drive the support platform 2 to move up and down, so as to adjust the distance between the upper and lower straightening rollers 21 to adapt to the straightening of pipes and bars of different sizes.

[0033] When processing a pipe bar with a trumpet-shaped opening at one end of the pipe, such as an oil pipe, the height of the straightening roller 21 is first adjusted through the support table 2 so that the distance between the upper and lower straightening rollers 21 matches the size of the pipe bar. When processing begins, the external hydraulic oil system first supplies hydraulic oil into the lifting groove 41 through the avoidance hole 42, and the hydraulic oil pushes the lifting plate 31, thereby driving the support table 2 and the straightening roller 21 to move away from the pipe bar through the rotating shaft 3, so that the straightening roller 21 can avoid the opening at one end of the pipe bar.

[0034] When the opening at one end of the tube and rod passes through the straightening roller 21, the external hydraulic oil system supplies hydraulic oil into the lifting groove 41 through the extrusion hole 43, so that the hydraulic oil pushes the lifting plate 31, drives the support platform 2 and the straightening roller 21 to approach and fit the outer wall of the tube and rod, so as to straighten the tube and rod.

[0035] By combining the above two moving modes, the movement of the support platform 2 driven by the rotating shaft 3 is slower, but the required parts are relatively simple, and it is mainly used for large-scale adjustment of the support platform 2 when the processed pipe and rod materials change, and reduces the number of parts of the structure related to the hydraulic oil adjustment of the support platform 2 position, saving costs; the movement of the support platform 2 driven by the hydraulic oil is faster, but the required parts are of higher precision, and it is mainly used for avoiding the opening of the pipe and rod materials during processing, and the straightening roller 21 is quickly reset when the opening of the pipe and rod materials passes through the straightening roller 21, thereby ensuring the overall straightening of the straightening roller 21 and improving the processing speed.

[0036] The limiting shaft 44 is used to limit the moving range of the lifting plate 31. The driver 49 can drive the driven gear 46 to rotate synchronously through the driving wheel 48 and the rotating ring 47. Since the cross section of the driving shaft 45 is hexagonal, when the driven gear 46 rotates, it will drive the driving shaft 45 and the limiting shaft 44 to rotate, so that the length of the limiting shaft 44 extending into the lifting groove 41 is adjusted through the threaded connection between the limiting shaft 44 and the sleeve 4, and then the moving range of the lifting plate 31 is adjusted, that is, the distance that the hydraulic oil can drive the straightening roller 21 to avoid.

[0037] For tubes and bars with larger openings, the limiting shaft 44 is allowed to shorten the length of the extension into the lifting groove 41, thereby increasing the distance for the straightening roller 21 to avoid; for tubes and bars with smaller openings, the limiting shaft 44 is allowed to increase the length of the extension into the lifting groove 41, thereby reducing the distance for the straightening roller 21 to avoid, thereby shortening the movement time of the straightening roller 21 and further improving the processing speed.

[0038] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0039] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0040] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0041] The above description is only the preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0042] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A quick-opening device for a precision straightening machine for metal tubes and bars, characterized in that: The invention comprises a base (1), a top platform (11) is arranged on the upper side of the base (1), a plurality of support platforms (2) are arranged between the upper side of the base (1) and the two ends of the lower side of the top platform (11), and straightening rollers (21) are rotatably arranged on the opposite sides of the support platforms (2) on both sides, and a rotating shaft (3) corresponding to the position of the support platform (2) is arranged on the top platform (11) and the base (1), one end of the rotating shaft (3) is threadedly connected to the support platform (2), and the other end of the rotating shaft (3) is movably sleeved with a shaft sleeve (4), and the shaft sleeves (4) on both sides are respectively connected to the top platform (11) and the support platform (2) on both sides. ) is fixedly connected to the base (1), a lifting groove (41) is provided on the inner side of the shaft sleeve (4), and a lifting plate (31) is provided on the outer wall fixed sleeve of the rotating shaft (3) located in the lifting groove (41), the circumferential side wall of the lifting plate (31) is matched with the circumferential inner wall of the lifting groove (41), the thickness of the lifting plate (31) is less than the thickness of the lifting groove (41), and the two ends of the shaft sleeve (4) close to and away from the support platform (2) are respectively provided with an avoidance hole (42) and an extrusion hole (43), and the avoidance hole (42) and the extrusion hole (43) are both connected to the lifting groove (41).

2. A quick-opening device for a metal tube and bar precision straightening machine according to claim 1, characterized in that: A plurality of guide shafts (12) are connected between the base (1) and the top platform (11), and both ends of the support platform (2) are respectively slidably connected to a guide shaft (12).

3. A quick-opening device for a metal tube and bar precision straightening machine according to claim 1, characterized in that: A plurality of limiting shafts (44) are distributed circumferentially at one end of the shaft sleeve (4) away from the support platform (2), one end of the limiting shaft (44) passes through one end of the shaft sleeve (4) and extends into the lifting groove (41), and the limiting shaft (44) is threadedly connected to the shaft sleeve (4).

4. A quick-opening device for a metal tube and bar precision straightening machine according to claim 3, characterized in that: A driving shaft (45) is fixed to one end of the limiting shaft (44) away from the lifting plate (31). The cross section of the driving shaft (45) is polygonal. A passive gear (46) adapted thereto is sleeved on the driving shaft (45). The passive gear (46) is rotatably connected to the shaft sleeve (4).

5. A quick-opening device for a metal tube and bar precision straightening machine according to claim 4, characterized in that: One end of the shaft sleeve (4) away from the support platform (2) is rotatably connected to a rotating ring (47), the inner wall and the outer wall of the rotating ring (47) are both provided with teeth, the passive gear (46) is meshed with the teeth of the inner wall of the rotating ring (47), the teeth of the outer wall of the rotating ring (47) are meshed with a driving wheel (48), the driving wheels (48) on both sides are rotatably connected to the base (1) and the top platform (11) respectively, the base (1) and the top platform (11) are both fixed with a driver (49), and the output shaft of the driver (49) is fixed to the driving wheel (48).

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