CN210253903U

CN210253903U - Pipe expander

Info

Publication number: CN210253903U
Application number: CN201921177045.0U
Authority: CN
Inventors: 陈荣伟
Original assignee: Shengzhou Gaohao Refrigeration Technology Co Ltd
Current assignee: Shengzhou Gaohao Refrigeration Technology Co Ltd
Priority date: 2019-07-25
Filing date: 2019-07-25
Publication date: 2020-04-07
Anticipated expiration: 2029-07-25

Abstract

The utility model discloses a pipe expander, which comprises a base, a clamping device and a frame are arranged on the base, the clamping device comprises a fixed plate, the fixed plate is L-shaped in cross section, a fixed hole is arranged on the upper surface of the bottom plate of the fixed plate, a U-shaped clamp is arranged on the fixed hole, one side of the side plate of the fixed plate is provided with sliding plates in up-and-down symmetry, a strip hole is arranged on the sliding plate, a rotatable bolt is arranged between the two sliding plates, a movable sleeve is sleeved on the bolt, a clamping plate is hinged on the movable sleeve, rotating blocks are arranged at the top and the bottom of the clamping plate close to one side of the sliding plate, a rotating shaft is arranged in the rotating block, the fixed block is arranged at one end of the side plate far away from the sliding plate, a clamping groove is arranged on the fixed, the utility model discloses it is rational in infrastructure, can fix and can not harm the fin to the fin.

Description

Pipe expander

Technical Field

The utility model relates to a pipe fitting processing field, in particular to electric tube expander.

Background

In the production process of the heat exchanger, the metal tube and the fins sleeved on the metal tube need to be tightly combined together, so that good heat transfer and heat conduction can be ensured, the weight is light, and the service life is long. At present, the methods adopted by people are manual and automatic. The automatic production speed is high, the quality is excellent, and the automatic production method is suitable for mass production. The automatic production is that the expansion rod with the expansion ball is inserted into the pipe to be expanded to expand the pipe to be expanded, and then the expansion rod is drawn out. It is often necessary to hold the tubular in place during expansion, to align the expander pin with the tubular to be expanded, and to hold the tubular while the expander pin is withdrawn.

When the clamping mechanism is used for clamping a pipe fitting in the existing pipe expander, on one hand, the position is not accurate, the outer surface of the pipe fitting is not easy to scratch, and the expansion rod is not easy to align with the opening of the pipe fitting and is easy to deflect, so that the pipe fitting or a fin is damaged, on the other hand, the clamping force for a workpiece is difficult to control, the clamping deformation is easy to realize when the expansion rod is too large, and the pipe fitting is easy to displace when the expansion rod is too small, so that the quality of a finished product is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a pipe expander.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a pipe expander comprises a base, wherein a clamping device and a rack are arranged on the base, the clamping device comprises a fixed plate, the fixed plate is L-shaped in cross section, a fixed hole is formed in the upper surface of a bottom plate of the fixed plate, a U-shaped clamp is arranged on the fixed hole, sliding plates are symmetrically arranged on one side of a side plate of the fixed plate from top to bottom, a long hole is formed in each sliding plate, a rotatable bolt is arranged between the two sliding plates, a movable sleeve is sleeved on the bolt, a clamping plate is hinged to the movable sleeve, rotating blocks are arranged at the top and the bottom of the clamping plate, which are close to one side of each sliding plate, a rotating shaft is arranged in each rotating block, the rotating shaft is placed in each long hole, a fixed block is arranged at one end, away from the sliding plates, of the side plate of, and one side of the clamping block, which is close to the clamping groove, is provided with a clamping bolt.

By adopting the technical scheme, the radiating fins to be processed are placed on the U-shaped clamp on the fixed plate, the bolt is rotated, the distance between the clamping plate and the side plate of the fixed plate is adjusted through the strip hole on the sliding plate and the rotating block on the clamping plate, the transmission shaft prevents the clamping plate from falling off from the fixed plate in the process of adjusting the clamping plate, and then the clamping block on the clamping plate is fixed on the clamping groove in the fixed plate through the clamping bolt.

Preferably, the top end of the rack is provided with a cross beam, hydraulic rods are symmetrically arranged below the cross beam, the output ends of the hydraulic rods are provided with flaring seats, two long screws are symmetrically arranged on the flaring seats, two power seats are sleeved on the long screws, sleeves and synchronous belts I are sleeved on the long screws, the sleeves are positioned in the power seats, two synchronous belts I are sleeved on the sleeves, one sides, far away from the rack, of the power seats are provided with motors, driving wheels are arranged on output shafts of the motors, synchronous belts II are sleeved on the sleeves and the driving wheels, an installation plate is arranged at the bottom of the power seats, a plurality of expansion holes are formed in the installation plate, and expansion rods are arranged in the expansion holes.

By adopting the technical scheme, when the radiating fin to be processed is fixed on the clamping device, the hydraulic rod drives the flaring seat to press downwards, when the flaring seat is positioned on the radiating fin, the motor on the power seat is started, the driving wheel at the output end of the motor drives the sleeve to rotate through the second synchronous belt and the first synchronous belt, the sleeve rotates on the screw rod to drive the power seat to move downwards, and the expansion rod below the power seat moves downwards along with the power seat to process the pipe in the radiator.

Preferably, a protection pad is arranged on one side of the fixing plate side plate, which is close to the clamping plate.

Adopt above-mentioned technical scheme, when clamping device pressed from both sides the fin, the protection pad can play the effect of buffering to the fin, prevents that it from leading to deformation because the clamping-force is too big at the in-process of centre gripping.

Preferably, the flaring seat is provided with a through hole corresponding to the expansion hole, the bottom of the through hole is provided with a fixing sleeve, and the fixing sleeve is conical.

By adopting the technical scheme, the expansion rod can be conveniently inserted into the pipe by the fixing sleeve, and the damage of the radiating fin caused by the fact that the pipe opening is not aligned in the processing process is prevented.

Preferably, one end of the clamping block, which is far away from the side plate of the fixing plate, is provided with a handle.

By adopting the technical scheme, the handle is convenient for workers to fix and disassemble the clamping block on the clamping groove.

Preferably, the bottom of the power seat and the top of the flaring seat are provided with cushion pads.

By adopting the technical scheme, the power seat is easily contacted with the flaring seat in the downward moving process of the power seat, great vibration is generated, the device is easily damaged due to overlarge vibration, and the vibration of the power seat and the flaring seat in the contact process is slowed down and counteracted by the cushion pad.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic bottom structure of the present invention;

FIG. 3 is an enlarged view of FIG. 1 at A;

fig. 4 is an enlarged view of fig. 1 at B.

Reference numerals: 1. a base; 2. a clamping device; 21. a fixing plate; 211. a fixing hole; 22. a sliding plate; 221. a strip hole; 23. a bolt; 24. A clamping plate; 241. a movable sleeve; 242. rotating the block; 243. a rotating shaft; 244. a clamping block; 245. clamping the bolt; 25. a fixed block; 251. a clamping groove; 3. A frame; 31. a cross beam; 32. a hydraulic lever; 33. a flaring seat; 331. a long lead screw; 332. a sleeve; 333. a first synchronous belt; 34. a power base; 341. A motor; 342. a driving wheel; 343. a second synchronous belt; 35. mounting a plate; 351. expanding the hole; 36. expanding rods; 4. a protection pad; 5. a through hole; 6. fixing a sleeve; 7. a handle; 8. a cushion pad.

Detailed Description

The following is only the preferred embodiment of the present invention, the protection scope is not limited to this embodiment, and all technical solutions belonging to the idea of the present invention should belong to the protection scope of the present invention. It should also be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and such modifications and decorations should also be regarded as the protection scope of the present invention.

As shown in fig. 1 to 4, a pipe expander comprises a base 1, a clamping device 2 and a frame 3 are fixed on the base 1, the clamping device 2 comprises a fixed plate 21, the section of the fixed plate 21 is L-shaped, a fixed hole 211 is formed in the upper surface of the bottom plate of the fixed plate 21, a U-shaped clamp is inserted into the fixed hole 211, sliding plates 22 are symmetrically fixed on one side of the side plate of the fixed plate 21 from top to bottom, a long hole 221 is formed in the sliding plate 22, a rotatable bolt 23 is arranged between the two sliding plates 22 and located on the fixed plate 21, a movable sleeve 241 is sleeved on the bolt 23, a clamping plate 24 is hinged on the movable sleeve 241, a rotating block 242 is not fixed on the top of the clamping plate 24 close to one side of the sliding plate 22, a rotating shaft 243 is fixed in the rotating block 242, the rotating shaft 243 is installed in the long hole 221, a fixed block 25 is arranged on, one end of the clamping plate 24 close to the clamping groove 251 is hinged with a clamping block 244, one side of the clamping block 244 close to the clamping groove 251 is fixed with a clamping bolt 245, one end of the clamping block 244 far away from the side plate of the fixing plate 21 is provided with a handle 7, the U-shaped clamp and the expansion pipe are arranged according to the number and distribution of U-shaped pipes on the radiating fin, the radiating fin to be processed is placed on the U-shaped clamp after the arrangement is finished, the U-shaped pipes on the radiating fin are fixed by the U-shaped clamp, the U-shaped clamp is prevented from inclining or deforming in the processing process, then the distance between the clamping plate 24 and the fixing plate 21 is adjusted by rotating the bolt 23, the clamping plate 24 is limited by the rotating shaft 243 and the strip hole 221, the clamping plate 24 is prevented from generating transverse displacement in the clamping process to cause damage to the radiating fin, the clamping bolt 245 is fixed in the clamping groove 251, and the clamping.

As shown in fig. 1 and fig. 2, a cross beam 31 is fixed at the top end of a frame 3, hydraulic rods 32 are symmetrically installed below the cross beam 31, a flaring seat 33 is fixed at the output end of each hydraulic rod 32, a power seat 34 is sleeved at the output end of each hydraulic rod 32, two long screws 331 are fixed on the flaring seat 33, the power seats 34 are sleeved on the two long screws 331, a sleeve 332 is sleeved on the long screw 331 and positioned in the power seat 34, a synchronous belt one 333 is sleeved on the two sleeves 332, a motor 341 is fixed on one side of the power seat 34 away from the frame 3, a transmission wheel 342 is fixed on the output shaft of the motor 341, a synchronous belt two 343 is sleeved on the sleeve 332 and the transmission wheel 342, an installation plate 35 is installed at the bottom surface of the power seat 34, an expansion hole 351 is formed in the bottom surface of the installation plate 35, an expansion rod 36 is installed in the expansion hole 351, a through hole 5 corresponding to, the hydraulic cylinder is started to push the flaring seat 33 to the radiating fin, so that the fixed sleeve 6 is sleeved on the pipe, the motor 341 on the power seat 34 drives the transmission wheel 342 on the output shaft to rotate, the transmission wheel 342 drives one sleeve 332 to rotate through the second synchronous belt 343, one sleeve 332 drives the other sleeve 332 to rotate through the second synchronous belt 343, so that the power seat 34 moves up and down on the screw rod, the power seat 34 drives the fixing plate 21 at the bottom of the power seat 34 and the expansion rod 36 on the fixing plate 21 to move down, the expansion rod 36 moves down to expand the pipe, after the pipe expansion is completed, the motor 341 rotates in the opposite direction, the power seat 34 moves up to pull the expansion rod 36 out of the pipe, the cylinder lifts the flaring seat 33, and the radiating fin is detached from the clamping device 2.

As shown in fig. 3, a protection pad 4 is fixed on a side of the fixing plate 21 close to the clamping plate 24, and the protection pad 4 plays a role of buffering and protecting when the clamping device 2 clamps the heat sink, so as to prevent the heat sink from being damaged due to over-tight clamping.

As shown in FIG. 3, the cushion pads 8 are fixed at the bottom of the power seat 34 and the top of the flared seat 33, when the power seat 34 moves downwards, the power seat 34 will contact the flared seat 33, a large impact force will be generated, the power seat 34 or the flared seat 33 will be damaged, and the cushion pads 8 can relieve the impact force, thereby protecting the power seat 34 and the flared seat 33.

As shown in fig. 4, a handle 7 is fixed to an end of the clamping block 244 remote from the side plate of the fixed plate 21, and the handle 7 facilitates fixing of a clamping bolt 245 of the clamping block 244 in the clamping groove 251.

Claims

1. The pipe expander is characterized by comprising a base (1), wherein a clamping device (2) and a rack (3) are arranged on the base (1), the clamping device (2) comprises a fixed plate (21), the fixed plate (21) is L-shaped in cross section, a fixed hole (211) is formed in the upper surface of a bottom plate of the fixed plate (21), a U-shaped clamp is arranged on the fixed hole (211), sliding plates (22) are symmetrically arranged on one side of a side plate of the fixed plate (21) up and down, a long hole (221) is formed in each sliding plate (22), a rotatable bolt (23) is arranged between the two sliding plates (22), a movable sleeve (241) is sleeved on each bolt (23), a clamping plate (24) is hinged to each movable sleeve (241), and rotating blocks (242) are arranged at the top and the bottom of the clamping plate (24) close to one side of the sliding plates (22), the rotating shaft (243) is arranged in the rotating block (242), the rotating shaft (243) is placed in the long hole (221), a fixing block (25) is arranged at one end, away from the sliding plate (22), of the side plate of the fixing plate (21), a clamping groove (251) is formed in the fixing block (25), a clamping block (244) is hinged to one end, close to the clamping groove (251), of the clamping plate (24), and a clamping bolt (245) is arranged on one side, close to the clamping groove (251), of the clamping block (244).

2. The pipe expander according to claim 1, wherein a cross beam (31) is arranged at the top end of the frame (3), hydraulic rods (32) are symmetrically arranged below the cross beam (31), a flaring seat (33) is arranged at the output ends of the two hydraulic rods (32), two long lead screws (331) are symmetrically arranged on the flaring seat (33), a power seat (34) is sleeved on the two long lead screws (331), sleeves (332) are sleeved in the power seat (34) on the two long lead screws (331), synchronous belts I (333) are sleeved on the two sleeves (332), a motor (341) is arranged at one side of the power seat (34) far away from the frame (3), a transmission wheel (342) is arranged on an output shaft of the motor (341), a synchronous belt II (343) is sleeved on the sleeves (332) and the transmission wheel (342), and a mounting plate (35) is arranged at the bottom of the power seat (34), a plurality of expansion holes (351) are formed in the mounting plate (35), and expansion rods (36) are arranged in the expansion holes (351).

3. The pipe expander according to claim 1, wherein the side of the fixed plate (21) adjacent to the clamping plate (24) is provided with a protective pad (4).

4. The pipe expander according to claim 2, wherein the flaring seat (33) is provided with a through hole (5) corresponding to the expanding hole (351), the bottom of the through hole (5) is provided with a fixing sleeve (6), and the fixing sleeve (6) is conical.

5. A tube expander as claimed in claim 1, wherein a handle (7) is provided at an end of the gripping block (244) remote from the side plate of the fixed plate (21).

6. A tube expander as claimed in claim 2, wherein the bottom of the power seat (34) and the top of the expander seat are provided with cushions (8).