Stainless steel pipe straightening device

Abstract

The utility model belongs to the technical field of stainless steel pipe straightening devices, and particularly relates to a stainless steel pipe straightening device which comprises a base. Lower straightening rollers are evenly installed at the top end of the base, upper straightening rollers are installed at the top ends of the lower straightening rollers, connecting rods are arranged at the top ends of the upper straightening rollers, supporting plates are fixedly installed on the outer walls of the connecting rods, positioning covers are fixedly installed at the top ends of the connecting rods, and lifting plates are arranged at the two ends of the supporting plates. Hydraulic machines are fixedly mounted at the top ends of the lifting plates correspondingly, and starting assemblies are arranged on one sides of the hydraulic machines. By arranging the adjusting assembly, when the distance between the lower straightening rollers and the upper straightening rollers needs to be adjusted according to the actual size of the stainless steel pipe, the distance between the lower straightening rollers or the upper straightening rollers can be changed according to the size of the stainless steel pipe, and therefore a larger straightening force arm is provided, and the acting effect of the straightening force on the steel pipe is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to stainless steel pipe straightening device technical field, specifically a stainless steel pipe straightening device. BACKGROUND

[0002] Stainless steel pipe may be bent and deformed in the process of transportation and processing, and the bent pipe will bring troubles to installation and use, such as affecting the connection and sealing of the pipeline, leading to poor fluid delivery, etc. Straightening can restore the stainless steel pipe to a straight state and ensure its normal use in actual production and life.

[0003] The stainless steel pipe straightening device is divided into four types of pressure straightening, roller straightening, tension straightening and tensile bending straightening. The roller straightening is widely used because of high precision and high efficiency. The roller straightening device is usually equipped with two rows of straightening rollers, and is placed obliquely to each other. In the straightening operation, the two pairs of straightening rollers generate opposite pressure, so that the stainless steel pipe is repeatedly bent and gradually flattened in the process.

[0004] The existing stainless steel pipe straightening device is usually provided with a lifting adjusting mechanism, which can control the distance between the two pairs of straightening rollers, so as to adapt to stainless steel pipes of different sizes, making the use of the device more flexible. However, the larger the pipe diameter, the stronger the resistance to deformation, and a greater straightening force is needed to make it produce plastic deformation. In order to achieve effective straightening, the distance between the straightening rollers needs to be increased to provide a greater straightening force arm, thereby improving the effect of the straightening force on the steel pipe. In the prior art, only the distance between the two pairs of straightening rollers is changed, and it is difficult to change the distance between the straightening rollers on the same side, thereby affecting the straightening effect of the device. Therefore, a stainless steel pipe straightening device is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] In order to make up for the shortcomings of the prior art, solve the problem that only the distance between the two pairs of straightening rollers is changed in the prior art, it is difficult to change the distance between the straightening rollers on the same side, thereby affecting the straightening effect of the device, the utility model provides a stainless steel pipe straightening device.

[0006] The utility model solves the technical scheme employing: a stainless steel pipe straightening device, including the base, the top of the base is evenly installed with the lower straightening roller, the top of the lower straightening roller is all installed with the upper straightening roller, the top of the upper straightening roller is provided with the positioning mechanism, the lower straightening roller and the upper straightening roller one side are all installed with the motor;

[0007] The positioning mechanism includes a connecting rod arranged at the top of the upper straightening roller, a support plate is fixedly installed on the outer wall of the connecting rod, a positioning cover is fixedly installed on the top of the connecting rod, and a lifting mechanism is arranged at both ends of the support plate.

[0008] The lifting mechanism comprises lifting plates arranged at both ends of the support plate, and the top ends of the lifting plates are fixedly installed with hydraulic machines, and one side of the hydraulic machine is provided with a starting assembly.

[0009] Preferably, the starting assembly comprises a dirt-proof plate arranged on one side of the hydraulic machine, the bottom end of the dirt-proof plate is fixedly installed with an abutting block, the bottom end of the abutting block is abutted with a starting block, the bottom end of the abutting block and the top end of the starting block are both arranged in an inclined manner, the bottom end of the starting block is slidingly installed with a guide rail, the bottom end of the guide rail is fixedly installed with a driving box, the bottom end of the driving box is fixedly connected with the top end of the positioning cover, one side of the starting block is fixedly installed with a tooth block, and one side of the tooth block is provided with an adjusting assembly.

[0010] Preferably, the adjusting assembly comprises a driving gear engagedly connected to one side of the tooth block, the bottom end of the driving gear is fixedly installed with a rotating connecting rod, the rotating connecting rod is composed of a half-tooth end and a connecting plate, the inner walls of the half-tooth end and the connecting plate are both rotatably installed with connecting shafts, the connecting shafts of the inner walls of the half-tooth end are all fixedly installed on the top end of the driving box, every four rotating connecting rods are arranged as a group, every two driving boxes are connected through a group of rotating connecting rods, and every two rotating connecting rods are engagedly connected through the half-tooth ends.

[0011] Preferably, the outer walls of the positioning cover are all fixedly installed with guide plates, the two ends of the guide plates are all slidingly installed on the inner walls of guide grooves, the guide grooves are all arranged on the inner sides of the support plates, the bottom ends of the guide plates are symmetrically installed with connecting strips, and the bottom ends of the connecting strips are fixedly installed on the two sides of the lower straightening roller.

[0012] Preferably, one side of the tooth block is abutted with a blocking plate, the blocking plate is symmetrically installed with two, one end of the blocking plate is fixedly installed with a torsion spring shaft, the blocking plate is rotatably installed on the inner wall of a receiving groove, the receiving groove is arranged on the inner wall of the guide rail, and the two sides of the tooth block are both uniformly provided with blocking grooves.

[0013] Preferably, one side of the blocking plate close to the abutting block is arranged in a flat portion, the other side of the blocking plate is arranged in an inclined portion, one side of the tooth block is symmetrically provided with an abutting groove, the abutting groove is matched with the inclined portion of the blocking plate, one side of the blocking plate close to the torsion spring shaft is abutted with an abutting arc plate, the abutting arc plate and the guide rail are connected through a return spring, the bottom end of the torsion spring shaft is slidingly installed on the inner wall of a sliding groove, and the sliding groove is arranged on the inner wall of the guide rail.

[0014] The utility model discloses the following beneficial effects:

[0015] 1. The utility model discloses a starting assembly and adjusting assembly cooperate, when needing according to actual stainless steel pipe size to the interval between lower straightening roll and upper straightening roll is adjusted, can the interval of lower straightening roll or upper straightening roll is adjusted simultaneously, so that the interval between lower straightening roll or upper straightening roll can be changed according to the size of stainless steel pipe, to provide greater straightening force arm, improve the effect of straightening force to the steel pipe, in addition, still can make stainless steel pipe have more space for stress adjustment in the straightening process, reduce stress concentration phenomenon, improve straightening quality.

[0016] 2. The utility model discloses a blocking plate can be set up, can after the position of lower straightening roll and upper straightening roll of device is completed, make the blocking plate under the action of torsion spring shaft abuts at one side of tooth block or blocking groove, to fix the position of tooth block, avoid the position deviation of tooth block when device vibration, to change the position of lower straightening roll or upper straightening roll, influence stainless steel pipe straightening effect problem, improved the reliability and stability of device. ACCURACY

[0017] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, below will to the embodiment or prior art description needed to use the drawing briefly introduced, obviously, below description in the drawing only some embodiments of the utility model, for those skilled in the art, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings.

[0018] Figure 1 It is the main body structure schematic diagram of the utility model;

[0019] Figure 2 It is the sectional structure schematic diagram of adjusting assembly of the utility model;

[0020] Figure 3 It is the utility model Figure 2 The enlarged view of A in the utility model;

[0021] Figure 4 It is the utility model Figure 2 The enlarged view of B in the utility model;

[0022] Figure 5 It is the sectional structure schematic diagram of starting block of the utility model.

[0023] In the figure: 1, base; 2, lower straightening roller; 3, upper straightening roller; 4, connecting rod; 5, support plate; 6, positioning cover; 7, lifting plate; 8, hydraulic machine; 9, anti-fouling plate; 10, abutting block; 11, starting block; 12, guide rail; 13, drive box; 14, tooth block; 15, drive gear; 16, half-tooth end; 17, connecting plate; 18, connecting shaft; 19, guide plate; 20, guide groove; 21, blocking plate; 22, torsion spring shaft; 23, storage groove; 24, blocking groove; 25, abutting groove; 26, abutting arc plate; 27, return spring. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0025] Embodiment one

[0026] Please refer to Figures 1 to 5 As shown in the figure, a stainless steel pipe straightening device, including base 1; the top of base 1 is uniformly provided with lower straightening roller 2, the top of lower straightening roller 2 is provided with upper straightening roller 3, the top of upper straightening roller 3 is provided with positioning mechanism, one side of lower straightening roller 2 and upper straightening roller 3 is provided with motor (not shown in the figure), wherein the type of motor is ZD132-2B;

[0027] The positioning mechanism includes connecting rod 4 provided at the top of upper straightening roller 3, the outer wall of connecting rod 4 is fixedly provided with support plate 5, the top of connecting rod 4 is fixedly provided with positioning cover 6, both ends of support plate 5 are provided with lifting mechanism;

[0028] The lifting mechanism includes lifting plate 7 provided at both ends of support plate 5, the top of lifting plate 7 is fixedly provided with hydraulic machine 8, one side of hydraulic machine 8 is provided with starting assembly, in the prior art, the distance between lower straightening roller 2 and upper straightening roller 3 is changed through the lifting assembly, so that the stainless steel pipes of different sizes are straightened, but it is difficult to change the distance between lower straightening roller 2 and upper straightening roller 3, thereby affecting the straightening effect of the stainless steel pipe, after the adjusting assembly of the utility model is used, the distance between lower straightening roller 2 and upper straightening roller 3 can be adjusted, and the distance between lower straightening roller 2 and upper straightening roller 3 can be adjusted at the same time, according to the bending theory in material mechanics, under the action of the same straightening force, the larger the pipe diameter, the smaller the bending deformation degree of the steel pipe, so that the distance between the straightening rollers can be increased to provide a larger straightening force arm and improve the effect of the straightening force on the steel pipe.

[0029] In this embodiment, please refer to Figure 2 , Figure 4 and Figure 5 As shown, the starting assembly includes a dirt-proof plate 9 disposed on one side of the hydraulic press 8. A stop block 10 is fixedly installed at the bottom end of the dirt-proof plate 9, and a starting block 11 abuts against the bottom end of the stop block 10. Both the bottom end of the stop block 10 and the top end of the starting block 11 are inclined. A guide rail 12 is slidably installed at the bottom end of the starting block 11, and a drive box 13 is fixedly installed at the bottom end of the guide rail 12. The bottom end of the drive box 13 is fixedly connected to the top end of the positioning cover 6. A toothed block 14 is fixedly installed on one side of the starting block 11, and an adjustment component is provided on one side of the toothed block 14. This design allows for straightening when adjustments are needed according to the size of the stainless steel pipe. When the gap between roller 2 and upper straightening roller 3 is reduced, hydraulic press 8 is started, causing hydraulic press 8 to drive lifting plate 7 to move. Lifting plate 7 drives support plate 5 to move. Support plate 5 drives connecting rod 4 to move through positioning cover 6. At the same time, support plate 5 also drives drive box 13 to move. Drive box 13 drives guide rail 12 to move. Guide rail 12 drives starting block 11 to move, so that the inclined surface at the top of starting block 11 abuts against the inclined surface at the bottom of abutting block 10. This causes abutting block 10 to drive starting block 11 to move away from abutting block 10, and then starting block 11 drives adjustment component to operate through tooth block 14.

[0030] In this embodiment, please refer to Figures 2 to 4 As shown, the adjustment assembly includes a drive gear 15 meshing with one side of the toothed block 14. A rotating connecting rod is fixedly installed at the bottom end of the drive gear 15. The rotating connecting rod consists of a half-tooth end 16 and a connecting plate 17. A connecting shaft 18 is rotatably installed on the inner wall of both the half-tooth end 16 and the connecting plate 17. The connecting shaft 18 on the inner wall of the half-tooth end 16 is fixedly installed on the top of the drive box 13. Every four rotating connecting rods are set as a group, and every two drive boxes 13 are connected by a group of rotating connecting rods. Every two rotating connecting rods are meshed by the half-tooth end 16. This design allows for adjustment of the lower straightening roller 2 and the upper straightening roller 3 according to the size of the stainless steel tube. When the spacing between them is adjusted, the starting component drives the drive gear 15 to rotate, the drive gear 15 drives the half-tooth end 16 to rotate, the half-tooth end 16 drives the adjacent half-tooth end 16 to rotate, thereby causing the connecting plate 17 connected to the half-tooth end 16 to rotate. The connecting plate 17 drives the adjacent connecting plate 17 to rotate through the connecting shaft 18, thereby driving a set of rotating connecting rods to rotate and extend. The rotating connecting rods then drive the adjacent rotating connecting rods to rotate through the meshing half-tooth end 16. At the same time, the rotating connecting rods drive the drive box 13 to move through the connecting shaft 18. The drive box 13 drives the positioning cover 6 to move, and the positioning cover 6 drives the upper straightening roller 3 to move, thereby changing the spacing between the upper straightening rollers 3.

[0031] Further, in the embodiment, the outer walls of the positioning cover 6 are fixedly installed with guide plates 19, both ends of the guide plates 19 are slidingly installed on the inner walls of guide grooves 20, the guide grooves 20 are all arranged on the inner sides of the support plates 5, the bottom ends of the guide plates 19 are symmetrically installed with connecting strips (not shown in the figure), and the bottom ends of the connecting strips are fixedly installed on both sides of the lower straightening roller 2. In this way, on the one hand, the guide plates 19 and the guide grooves 20 can keep the upper straightening roller 3 stable in the horizontal direction when moving, so that the device is more stable and reliable. On the other hand, the connecting strips can drive the lower straightening roller 2 to move synchronously when the upper straightening roller 3 moves, so that the spacing between the lower straightening rollers 2 can be adjusted synchronously.

[0032] In summary, through the cooperation of the starting assembly and the adjusting assembly, when it is necessary to adjust the spacing between the lower straightening roller 2 and the upper straightening roller 3 according to the actual size of the stainless steel pipe, the spacing of the lower straightening roller 2 or the upper straightening roller 3 can be adjusted synchronously, so that the spacing between the lower straightening roller 2 or the upper straightening roller 3 can be changed according to the size of the stainless steel pipe, thereby providing a larger straightening force arm and improving the effect of the straightening force on the steel pipe. In addition, the stainless steel pipe has more space for stress adjustment during the straightening process, reduces the stress concentration phenomenon, and improves the straightening quality.

[0033] Further, in the embodiment, please refer to Figure 5 As shown in the figure, one side of the tooth block 14 abuts against a blocking plate 21, the blocking plate 21 is symmetrically installed with two, one end of the blocking plate 21 is fixedly installed with a torsion spring shaft 22, and the blocking plate 21 is rotationally installed on the inner wall of a receiving groove 23, the receiving groove 23 is arranged on the inner wall of the guide rail 12, and the two sides of the tooth block 14 are uniformly provided with blocking grooves 24. In this way, after the positions of the lower straightening roller 2 and the upper straightening roller 3 are completed, the blocking plate 21 abuts against one side of the tooth block 14 or the blocking groove 24 under the action of the torsion spring shaft 22, so as to fix the position of the tooth block 14, thereby avoiding the problem that the position of the tooth block 14 deviates when the device vibrates, thereby changing the positions of the lower straightening roller 2 or the upper straightening roller 3 and affecting the straightening effect of the stainless steel pipe, and improving the reliability and stability of the device.

[0034] Further, in the embodiment, please refer to Figure 5As shown, the blocking plate 21 is provided with a flat portion near one side of the abutting block 10, and is provided with an inclined portion on the other side, one side of the tooth block 14 is symmetrically provided with an abutting groove 25, the abutting groove 25 is matched with the inclined portion of the blocking plate 21, one side of the blocking plate 21 near the torsion spring shaft 22 is abutted with an abutting arc plate 26, the abutting arc plate 26 and the guide rail 12 are connected through a reset spring 27, the bottom end of the torsion spring shaft 22 is slidingly installed on the inner wall of the sliding groove, and the sliding groove is formed in the inner wall of the guide rail 12. In this way, when the driving box 13 is pushed to reset after the straightening of the stainless steel pipe is completed, one side of the abutting groove 25 or the blocking groove 24 abuts against the blocking plate 21, the blocking plate 21 is pushed to move towards the storage groove 23 through the inclined surface, the blocking plate 21 drives the abutting arc plate 26 to move, the abutting arc plate 26 extrudes the reset spring 27 to make the reset spring 27 elastically deform, accumulate elastic potential energy, and after the driving box 13 is reset, the reset spring 27 releases the elastic potential energy to elastically deform to push the blocking plate 21 to reset through the abutting arc plate 26.

[0035] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0036] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A stainless steel tube straightening apparatus characterized by: It includes base (1), the top of the base (1) is uniformly installed lower straightening roll (2), the top of the lower straightening roll (2) is installed upper straightening roll (3), the top of the upper straightening roll (3) is provided with positioning mechanism, the lower straightening roll (2) and the one side of upper straightening roll (3) are all installed motor; The positioning mechanism includes the connecting rod (4) provided at the top of the upper straightening roll (3), the outer wall of the connecting rod (4) is fixedly installed with the support plate (5), the top of the connecting rod (4) is fixedly installed with the positioning cover (6), the both ends of the support plate (5) are provided with lifting mechanism; The lifting mechanism includes the lifting plate (7) provided at the both ends of the support plate (5), the top of the lifting plate (7) is fixedly installed with the hydraulic machine (8), one side of the hydraulic machine (8) is provided with starting assembly.

2. A device for straightening a stainless steel tube according to claim 1, characterized in that: The starting assembly includes the anti-fouling plate (9) provided at one side of the hydraulic machine (8), the bottom of the anti-fouling plate (9) is fixedly installed with the abutment block (10), the bottom of the abutment block (10) is in abutment with the starting block (11), the bottom of the abutment block (10) and the top of the starting block (11) are all provided in inclined shape, the bottom of the starting block (11) is slidingly installed with the guide rail (12), the bottom of the guide rail (12) is fixedly installed with the drive box (13), the bottom of the drive box (13) is fixedly connected with the top of the positioning cover (6), one side of the starting block (11) is fixedly installed with the tooth block (14), one side of the tooth block (14) is provided with adjusting assembly.

3. A device for straightening a stainless steel tube according to claim 2, characterized in that: The adjusting assembly includes the drive gear (15) engagedly connected to one side of the tooth block (14), the bottom of the drive gear (15) is fixedly installed with the rotating connecting rod, the rotating connecting rod is composed of half-tooth end (16) and connecting plate (17), the inner wall of the half-tooth end (16) and the connecting plate (17) is all rotatably installed with connecting shaft (18), the connecting shaft (18) of the inner wall of the half-tooth end (16) is all fixedly installed at the top of the drive box (13), every four rotating connecting rods are provided as a group, every two drive boxes (13) are connected through a group of rotating connecting rods, every two rotating connecting rods are engagedly connected through half-tooth end (16).

4. A device for straightening a stainless steel tube according to claim 3, characterized in that: The outer wall of the positioning cover (6) is fixedly installed with guide plate (19), the both ends of the guide plate (19) are slidingly installed in the inner wall of guide groove (20), the guide groove (20) is all opened in the inner side of the support plate (5), the bottom of the guide plate (19) is symmetrically installed with connecting strip, the bottom of the connecting strip is fixedly installed on both sides of the lower straightening roll (2).

5. A device for straightening a stainless steel tube according to claim 4, characterized in that: One side of the tooth block (14) is in abutment with the blocking plate (21), the blocking plate (21) is symmetrically installed with two, one end of the blocking plate (21) is fixedly installed with torsion spring shaft (22), the blocking plate (21) is rotatably installed in the inner wall of the receiving groove (23), the receiving groove (23) is all opened in the inner wall of the guide rail (12), the both sides of the tooth block (14) are uniformly provided with blocking groove (24).

6. A device for straightening a stainless steel tube according to claim 5, characterized in that: The side close to the abutting block (10) of the blocking plate (21) is provided as a flat part, the other side of the blocking plate (21) is provided as an inclined part, one side of the tooth block (14) is symmetrically provided with an abutting groove (25), the abutting groove (25) is matched with the inclined part of the blocking plate (21), one side close to the torsion spring shaft (22) of the blocking plate (21) is abutted with an abutting arc plate (26), the abutting arc plate (26) and the guide rail (12) are connected through a reset spring (27), and the bottom end of the torsion spring shaft (22) is slidingly installed on the inner wall of a sliding groove.

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