CN110899526B

CN110899526B - Working method of expanding device for steel pipe machining

Info

Publication number: CN110899526B
Application number: CN201911253600.8A
Authority: CN
Inventors: 袁福英; 张萌萌; 苏波
Original assignee: Jiangsu Yangyuan Metal Manufacturing Co ltd
Current assignee: Jiangsu Yangyuan Metal Manufacturing Co.,Ltd.
Priority date: 2019-12-09
Filing date: 2019-12-09
Publication date: 2021-07-02
Anticipated expiration: 2039-12-09
Also published as: CN110899526A

Abstract

The invention relates to the technical field of steel pipe processing, in particular to a working method of an expanding device for steel pipe processing, wherein the expanding device comprises an operation table, the left side of the top of the operation table is bolted with a gantry, the top of the gantry is bolted with a lifting mechanism, the bottom of the lifting mechanism is bolted with a placing mechanism, the lifting mechanism supports the placing mechanism, the right side of the operation table is bolted with a moving mechanism, the right side of the top of the operation table is slidably connected with a sliding frame, the sliding frame is L-shaped, the right side of the sliding frame is rotatably connected with a rotating rod, and the right end of the rotating rod penetrates through the right side of the sliding frame and is sleeved with a driving wheel; the invention can reduce the friction between the expanding head and the steel pipe, is convenient for loading and unloading, and solves the problems that the expanding head of the prior device can generate severe friction with the inside of a pipeline, the load of a power device is increased, only one steel pipe can be used each time, and the loading and unloading operation cannot be carried out in the operation process of the device.

Description

Working method of expanding device for steel pipe machining

Technical Field

The invention relates to the technical field of steel pipe machining, in particular to a working method of an expanding device for steel pipe machining.

Background

Pipe end expanding is a process for machining the end of a roughly formed steel pipe, and a certain radial force is applied to the pipe end to enable the pipe end to generate proper plastic deformation, so that the diameter and the roundness of the pipe end meet the process requirements, and meanwhile, the internal stress of part of the steel pipe is eliminated

Patent one, the patent of patent No. CN191710494147.9 discloses a expand tub device for processing expand draw pipe, belongs to mechanical technical field. It has solved the problem that work efficiency is low among the prior art. This a pipe expanding device for processing expands draw, comprises a workbench, be fixed with the support on the workstation, be equipped with the pipe expanding mechanism that can expand the pipe to the steel pipe on the support, pipe expanding mechanism is including compressing tightly the base and compressing tightly the footstock, be fixed with the fixing base on the workstation, it fixes on the fixing base to compress tightly the base, the fixing base has the pitch arc recess I that matches with the steel pipe, be fixed with the diaphragm on the support, be fixed with cylinder I on the diaphragm, the piston rod of cylinder I is vertical downwards and with compress tightly the footstock and fix mutually, compress tightly the footstock and can outwards release the back and lean on with compressing tightly the base counterbalance at the piston rod of cylinder I, one side of support is fixed with the installation piece. The invention has the advantage of improving the working efficiency.

Patent No. CN191710790104.5 discloses a hot-rolled steel tube rotary expander with variable stagger angle, which comprises two roller devices, a guide device and a top; the roller device comprises a driving mechanism and a roller, and the driving roller carries out axial reciprocating motion and circumferential rotation and swings by taking a vertical central line as a center; the roll comprises a roll head; the guide device comprises an upper guide plate and a lower guide plate; the upper guide plate, the lower guide plate and the two roller heads are enclosed to form an expanding channel, and the top head is arranged inside the expanding channel. The invention can adjust the roller by driving the roller to do reciprocating motion along the axial direction of the roller, circumferential rotation taking the axial line as a central shaft and swing taking a vertical central line as a center through the driving mechanism, thereby being matched with raw material pipes with various sizes, effectively reducing the preparation cost of production tools and the production cost, and simultaneously effectively reducing the replacement frequency of the roller and improving the production efficiency in the process of expanding the raw material pipes with different sizes.

Third, patent No. CN191710618184.1 discloses a hydraulic direct-acting steel tube end expanding machine, which comprises an expanding head, an expanding machine frame, a steel tube conveying system, a hydraulic control system and an electric control system, wherein the expanding head comprises an expanding head frame, a plurality of direct-acting hydraulic cylinders and a plurality of expanding dies, the plurality of direct-acting hydraulic cylinders are fixed on the outer wall of the expanding head frame along the circumferential direction of the expanding head frame, one end surface of each expanding die is fixed with the direct-acting hydraulic cylinder, the other end surface of each expanding die is a cambered surface, the expanding head frame is fixed on one side of the expanding machine frame, the steel tube conveying system is arranged on the side of the expanding machine frame where the expanding head frame is fixed, the plurality of direct-acting hydraulic cylinders are electrically connected with the hydraulic control system, the hydraulic control system and the steel tube conveying system are electrically connected with an external power supply through the electric control system, the traditional cone bevel structure is abandoned, and the radial expanding force is directly generated by the, the processing of the cone and the inclined block with high manufacturing cost is avoided, and the equipment cost is greatly reduced.

However, the above patent has the following problems; the first expanding head and the inner part of the pipeline are in violent friction, the load of a power device is increased, the service life of the expanding head is influenced, the second expanding head can only be used for installing one steel pipe at a time, the loading and unloading operation cannot be carried out in the operation process of the device, and the third expanding head is complex in steel pipe clamping mode and inconvenient to operate.

SUMMARY OF THE PATENT FOR INVENTION

The invention aims to provide an expanding device for processing a steel pipe, which has the advantages of reducing friction between an expanding head and the steel pipe and facilitating feeding and discharging, and solves the problems that the expanding head of the existing device can be severely rubbed with the inside of a pipeline, the load of a power device is increased, the service life of the expanding head is influenced, only one steel pipe can be used at a time, and the feeding and discharging operation cannot be carried out in the operation process of the device.

1. In order to achieve the purpose, the invention provides the following technical scheme: the working method comprises the following steps: sequentially placing three steel pipes on a placing rod between connecting rods, starting a second motor, driving a side gear to rotate by the second motor, driving a threaded sleeve to rotate by the side gear, driving a screw rod to move downwards by a rotating threaded sleeve through internal threads, driving the connecting rod to move downwards by a support plate by a downward moving screw rod, driving the steel pipes to move downwards by the connecting rods through the placing rod, starting a third motor when the steel pipes are in the same line with the through holes and the diameter expanding mechanism, driving a threaded rod to rotate by the third motor, driving a sliding frame to move leftwards by the moving sleeve, driving the diameter expanding mechanism to abut against the steel pipes by the sliding frame through the rotating rod, starting a telescopic piece, clamping and fixing the steel pipes by a clamping plate, starting a first motor, driving a driving wheel to rotate by the first motor, driving the rotating driving wheel to rotate the diameter expanding mechanism through the rotating rod, starting the third motor, driving the diameter expanding mechanism to move leftwards by the third motor to, and in the diameter expanding process, the rotating column is in direct contact with the inner wall of the steel pipe, the rotating column starts to rotate, after the diameter expansion is finished, the third motor is rotated reversely, the diameter expanding mechanism moves rightwards, the steel pipe at the bottom layer moves downwards, the operation is repeated to operate the steel pipe at the second layer, then the steel pipe at the third layer is expanded, at the moment, the steel pipe at the first layer can be taken down, a new steel pipe is placed on the placing rod at the bottom, the feeding and discharging are finished, the second motor is rotated reversely, the second motor drives the steel pipe to move upwards, the newly replaced steel pipe at the bottommost layer is processed, at the moment, the steel pipes at the second layer and the third layer can be replaced, and.

Compared with the prior art, the invention has the following beneficial effects:

(1) the friction between the expanding mechanism and the pipeline can be reduced through the structural design of the expanding mechanism, and the abrasion of the steel pipe in the expanding process is reduced.

(2) Three steel pipes can be put into the feeding device at one time through a user, the user can carry out blanking on the steel pipes completing the operation in the operation process, the feeding can be continued after the blanking is completed, and unnecessary time cost is reduced.

(3) Can carry out effectual fixed to the steel pipe through extensible member and wide grip block, do not influence the reciprocating of placing the mechanism moreover, also do not influence and go up the unloading operation.

Drawings

FIG. 1 is a schematic view of the inventive structure;

FIG. 2 is a schematic diagram of the right side view of the patent placing mechanism according to the present invention;

FIG. 3 is a schematic top view of a patented structure of the invention;

FIG. 4 is a perspective view of the patent placement mechanism of the present invention;

FIG. 5 is an enlarged view of a portion of the section A in FIG. 1;

FIG. 6 is an enlarged schematic view of an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a second embodiment of the present invention;

fig. 8 is an exploded view of the second embodiment of the present invention.

In the figure: 1. an operation table; 2. a gantry frame; 3. a lifting mechanism; 31. a screw; 32. a threaded sleeve; 33. a bearing; 34. a fixing frame; 35. a side gear; 36. a second motor; 4. a placement mechanism; 41. a support plate; 42. a connecting rod; 43. placing a rod; 44. a telescoping member; 45. a clamping plate; 5. a moving mechanism; 51. a third motor; 52. a threaded rod; 53. moving the sleeve; 6. a sliding frame; 7. a rotating rod; 8. a driving wheel; 9. a driving wheel; 10. a first motor; 11. a diameter expanding mechanism; 1111. a conical expanding head; 1112. rotating the column; 1121. an expanding member; 1122. an adjustment groove; 1123. an adjusting block; 1124. a rotating roller; 12. a guide rod; 13. a guide sleeve; 14. a stress block; 15. a through hole; 16. moving the opening downwards; 17. a limiting block; 18. a stabilizer; 19. and (5) supporting legs.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by a person skilled in the art based on the embodiments in the patent of the invention without any inventive work belong to the protection scope of the patent of the invention.

Referring to fig. 1-8, an expanding device for processing steel pipes comprises a working table 1, a gantry frame 2 is bolted on the left side of the top of the working table 1, a lifting mechanism 3 is bolted on the top of the gantry frame 2, a placing mechanism 4 is bolted on the bottom of the lifting mechanism 3, the placing mechanism 4 is supported by the lifting mechanism 3, a moving mechanism 5 is bolted on the right side of the working table 1, a sliding frame 6 is slidably connected on the right side of the top of the working table 1, the sliding frame 6 is L-shaped, a rotating rod 7 is rotatably connected on the right side of the sliding frame 6, the right end of the rotating rod 7 penetrates through the right side of the sliding frame 6 and is sleeved with a driving wheel 8, the surface of the driving wheel 8 is engaged with a driving wheel 9, a first motor 10 is sleeved at the axis of the driving wheel 9, the bottom of the first motor 10 is bolted on the top of the sliding frame 6, a left end of the rotating rod 7 is bolted with an expanding mechanism 11, the expanding mechanism 11 comprises, the inner part of the cone-shaped expanding head 1111 is rotatably connected with the surface of the rotating column 1112, and the right side of the cone-shaped expanding head 1111 is bolted with the left end of the rotating rod 7.

In this embodiment, placement mechanism 4 includes backup pad 41, the equal bolt in four corners of backup pad 41 bottom has connecting rod 42, the bottom on connecting rod 42 surface, equal bolt has the pole 43 of placing between middle-end and the top, place the bolt between two connecting rods 42 in pole 43 and the outside, the equal bolt in bottom of 2 inboard front ends of dragon door frames and rear end has extensible member 44, the output bolt of extensible member 44 has grip block 45, can put into a plurality of steel pipes through setting up placement mechanism 4, go up unloading conveniently.

In this embodiment, elevating system 3 includes screw rod 31, the bottom of screw rod 31 and the middle bolt at backup pad 41 top, the top of screw rod 31 runs through the top of longmen frame 2, the surperficial threaded connection of screw rod 31 has thread bush 32, the bottom on thread bush 32 surface has cup jointed bearing 33, fixed frame 34 has been cup jointed on the surface of bearing 33, the bottom of fixed frame 34 and the top bolt of longmen frame 2, the top meshing on thread bush 32 surface has side gear 35, second motor 36 has been cup jointed to the axle center department of side gear 35, the bottom of second motor 36 and the front side bolt at longmen frame 2 top, can drive placement mechanism 4 through setting up elevating system 3 and reciprocate, increase the convenience of unloading, and elevating system 3 can support placement mechanism 4.

In this embodiment, the moving mechanism 5 includes a third motor 51, the left side of the third motor 51 is bolted to the right side of the workbench 1, the output end of the third motor 51 is connected with a threaded rod 52, both ends of the threaded rod 52 are rotatably connected to the inside of the workbench 1, the surface of the threaded rod 52 is in threaded connection with a moving sleeve 53, the surface of the moving sleeve 53 is in sliding connection with the inside of the workbench 1, the top of the moving sleeve 53 is bolted to the bottom of the sliding frame 6, and the moving mechanism 5 is arranged to drive the expanding mechanism 11 to move, thereby facilitating the expanding operation.

In this embodiment, the guide rods 12 are bolted to both sides of the top of the support plate 41, the guide sleeves 13 are slidably connected to the surfaces of the guide rods 12, the surfaces of the guide sleeves 13 are bolted to the top of the outer side of the gantry frame 2, and the guide rods 12 and the guide sleeves 13 can play a role in stabilizing and balancing the support plate 41 to prevent the steel pipes from shifting.

In this embodiment, the top of the work table 1 and the left side of the gantry 2 are bolted with a stress block 14, a through hole 15 is formed inside the stress block 14, and the stress block 14 can fix a steel pipe to prevent the steel pipe from moving in the work process.

In this embodiment, the top of the working platform 1 and the bottom of the placing mechanism 4 are provided with a downward moving opening 16, the size of the downward moving opening 16 is matched with that of the placing mechanism 4, and the downward moving opening 16 can facilitate the downward movement of the placing mechanism 4.

In this embodiment, the top bolt of screw rod 31 has stopper 17, and stopper 17's diameter is the twice of screw rod 31, and stopper 17 can carry out spacingly to screw rod 31, avoids screw rod 31 to dislocate.

In this embodiment, the stabilizing members 18 are bolted to the middle portions of the front and rear sides of the supporting plate 41, the side of the stabilizing member 18 away from the supporting plate 41 is slidably connected to the inner side of the gantry frame 2, and the stabilizing member 18 can stabilize the placing mechanism 4.

In this embodiment, four corners of the bottom of the work table 1 are bolted with the supporting legs 19, the supporting legs 19 are made of steel, and the work table 1 can be supported by the supporting legs 19, so that the placement mechanism 4 can be conveniently moved downwards.

The working principle is as follows: the first embodiment is as follows: the three steel pipes are sequentially placed on a placing rod 43 between connecting rods 42, a second motor 36 is started, the second motor 36 drives a side gear 35 to rotate, the side gear 35 drives a threaded sleeve 32 to rotate, the rotating threaded sleeve 32 drives a screw rod 31 to move downwards through internal threads, the downward moving screw rod 31 drives the connecting rod 42 to move downwards through a supporting plate 41, the connecting rod 42 drives the steel pipes to move downwards through the placing rod 43, when the steel pipes are in the same line with the through holes 15 and the diameter expanding mechanism 11, a third motor 51 is started, the third motor 51 drives a threaded rod 52 to rotate, the rotating threaded rod 52 drives a sliding frame 6 to move leftwards through a moving sleeve 53, the sliding frame 6 drives the diameter expanding mechanism 11 to abut against the steel pipes through a rotating rod 7, a telescopic piece 44 is started, the telescopic piece 44 clamps and fixes the steel pipes through a clamping plate 45, the first motor 10 is started, and the first motor 10 drives a driving wheel 8 to, the rotating transmission wheel 8 drives the expanding mechanism 11 to rotate through the rotating rod 7, the third motor 51 is started, the third motor 51 drives the expanding mechanism 11 to move leftwards to expand the diameter, the rotating column 1112 is in direct contact with the inner wall of the steel pipe in the expanding process, the rotating column 1112 starts to rotate automatically to reduce friction, after the expanding is completed, the third motor 51 is rotated reversely, the expanding mechanism 11 moves rightwards, the steel pipe at the bottom layer moves downwards, the operation is repeated to operate the steel pipe at the second layer, then the steel pipe at the third layer is expanded, at the moment, the steel pipe at the first layer can be taken down, a new steel pipe is placed on the placing rod 43 at the bottom, the feeding and discharging are completed, the second motor 36 is rotated reversely, the second motor 36 drives the steel pipe to move upwards, the newly replaced steel pipe at the bottommost layer is processed, at the moment, the steel pipes at the second layer and the third layer can be replaced.

Example two: the adjusting block 1123 is placed in the adjusting groove 1122 inside the diameter expanding member 1121, due to the structure of the diameter expanding member 1121, the diameter of the diameter expanding mechanism 11 is the largest when the adjusting block 1123 is close to the right side of the adjusting groove 1122, the diameter of the diameter expanding mechanism 11 is the smallest when the adjusting block 1123 is close to the left side of the adjusting groove 1122, after the adjusting block 1123 is adjusted, the adjusting block 1123 and the diameter expanding member 1121 are fixed by bolts, and the rotating roller 1124 contacts with the inner wall of the steel pipe to start rotating in the diameter expanding process to offset friction, compared with the first embodiment. In the second embodiment, the radius of the diameter expanding mechanism 11 can be adjusted.

Although embodiments of the present patent have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the present patent, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A working method of an expanding device for machining a steel pipe comprises an operation table, wherein a gantry (2) is bolted on the left side of the top of the operation table (1), a lifting mechanism (3) is bolted on the top of the gantry (2), a placing mechanism (4) is bolted on the bottom of the lifting mechanism (3), the lifting mechanism (3) supports the placing mechanism (4), a moving mechanism (5) is bolted on the right side of the operation table (1), a sliding frame (6) is slidably connected on the right side of the top of the operation table (1), the sliding frame (6) is L-shaped, a rotating rod (7) is rotatably connected on the right side of the sliding frame (6), the right end of the rotating rod (7) penetrates through the right side of the sliding frame (6) and is sleeved with a driving wheel (8), and a driving wheel (9) is meshed on the surface of the driving wheel (8), a first motor (10) is sleeved at the axis of the driving wheel (9), the bottom of the first motor (10) is bolted with the top of the sliding frame (6), the left end of the rotating rod (7) is bolted with an expanding mechanism (11), the expanding mechanism (11) comprises a conical expanding head (1111) and a rotating column (1112), the interior of the conical expanding head (1111) is rotatably connected with the surface of the rotating column (1112), and the right side of the conical expanding head (1111) is bolted with the left end of the rotating rod (7); the placing mechanism (4) comprises a supporting plate (41), connecting rods (42) are bolted at four corners of the bottom of the supporting plate (41), placing rods (43) are bolted between the bottom end, the middle end and the top end of the surface of each connecting rod (42), the placing rods (43) are bolted with two connecting rods (42) on the outer side, telescopic pieces (44) are bolted at the bottoms of the front end and the rear end of the inner side of the dragon door frame (2), and a clamping plate (45) is bolted at the output end of each telescopic piece (44);

the working method comprises the following steps: sequentially placing three steel pipes on a placing rod between connecting rods, starting a second motor, driving a side gear to rotate by the second motor, driving a threaded sleeve to rotate by the side gear, driving a screw rod to move downwards by a rotating threaded sleeve through internal threads, driving the connecting rod to move downwards by a support plate by a downward moving screw rod, driving the steel pipes to move downwards by the connecting rods through the placing rod, starting a third motor when the steel pipes are in the same line with the through holes and the diameter expanding mechanism, driving a threaded rod to rotate by the third motor, driving a sliding frame to move leftwards by the moving sleeve, driving the diameter expanding mechanism to abut against the steel pipes by the sliding frame through the rotating rod, starting a telescopic piece, clamping and fixing the steel pipes by a clamping plate, starting a first motor, driving a driving wheel to rotate by the first motor, driving the rotating driving wheel to rotate the diameter expanding mechanism through the rotating rod, starting the third motor, driving the diameter expanding mechanism to move leftwards by the third motor to, and in the diameter expanding process, the rotating column is in direct contact with the inner wall of the steel pipe, the rotating column starts to rotate, after the diameter expansion is finished, the third motor is rotated reversely, the diameter expanding mechanism moves rightwards, the steel pipe at the bottom layer moves downwards, the operation is repeated to operate the steel pipe at the second layer, then the steel pipe at the third layer is expanded, at the moment, the steel pipe at the first layer can be taken down, a new steel pipe is placed on the placing rod at the bottom, the feeding and discharging are finished, the second motor is rotated reversely, the second motor drives the steel pipe to move upwards, the newly replaced steel pipe at the bottommost layer is processed, at the moment, the steel pipes at the second layer and the third layer can be replaced, and.

2. The method of operating a diameter-expanding device for steel pipe working according to claim 1, wherein: the lifting mechanism (3) comprises a screw rod (31), the bottom end of the screw rod (31) is bolted to the middle of the top of the support plate (41), the top end of the screw rod (31) penetrates through the top of the gantry frame (2), a threaded sleeve (32) is in threaded connection with the surface of the screw rod (31), a bearing (33) is sleeved at the bottom end of the surface of the threaded sleeve (32), a fixed frame (34) is sleeved on the surface of the bearing (33), the bottom of the fixed frame (34) is bolted to the top of the gantry frame (2), a side gear (35) is meshed at the top end of the surface of the threaded sleeve (32), a second motor (36) is sleeved at the axis of the side gear (35), and the bottom of the second motor (36) is bolted to the front side of the top of the gantry frame (2).

3. The method of operating a diameter-expanding device for steel pipe working according to claim 1, wherein: the moving mechanism (5) comprises a third motor (51), the left side of the third motor (51) is bolted to the right side of the operating platform (1), the output end of the third motor (51) is connected with a threaded rod (52), two ends of the threaded rod (52) are both rotatably connected with the inside of the operating platform (1), the surface of the threaded rod (52) is in threaded connection with a moving sleeve (53), the surface of the moving sleeve (53) is in sliding connection with the inner side of the operating platform (1), and the top of the moving sleeve (53) is bolted to the bottom of the sliding frame (6).

4. The method of operating a diameter-expanding device for steel pipe working according to claim 1, wherein: the diameter expanding mechanism (11) is composed of a diameter expanding piece (1121), an adjusting groove (1122), an adjusting block (1123) and a rotating roller (1124), the adjusting groove (1122) is formed in the top and the bottom of the diameter expanding piece (1121), the adjusting block (1123) is placed on the inner surface of the adjusting groove (1122), the rotating roller (1124) is rotatably connected to the outer side of the adjusting block (1123), the adjusting block (1123) is in bolted connection with the diameter expanding piece (1121), the inside of the diameter expanding piece (1121) is in an isosceles triangle shape, and the right side of the diameter expanding piece (1121) is in bolted connection with the left end of a rotating rod (7).

5. The method of operating a diameter-expanding device for steel pipe working according to claim 1, wherein: the guide device is characterized in that guide rods (12) are bolted to two sides of the top of the support plate (41), guide sleeves (14) are connected to the surfaces of the guide rods (12) in a sliding mode, and the surfaces of the guide sleeves (14) are bolted to the top of the outer side of the gantry (2).

6. The method of operating a diameter-expanding device for steel pipe working according to claim 1, wherein: the top of operation platform (1) is located the left side bolt joint of dragon door frame (2) and has received atress piece (14), through-hole (15) have been seted up to the inside of atress piece (14).

7. The method of operating a diameter-expanding device for steel pipe working according to claim 1, wherein: stabilizing pieces (18) are bolted to the middle parts of the front side and the rear side of the supporting plate (41), and one side, far away from the supporting plate (41), of each stabilizing piece (18) is connected with the inner side of the gantry frame (2) in a sliding mode.