JP2503684Y2 - Tube expansion device - Google Patents

Description

[Detailed description of the device]

[0001]

INVENTION The present invention relates primarily tube expansion of the heat exchanger tubes, and more particularly the radiation fins and a plurality of tubes of multiple
On the tube expanding device used to anchor me by the tube expansion of the tube.

[0002]

Conventionally, as this type of expanding apparatus, there are expanding apparatus of JP 60 over 68122 JP Shosai. That is,
As shown in FIG. 4, the pipe expanding device disclosed in the above publication has a plurality of pipes.
Each heat radiation located on the end side of the radiation fin 21 through which 20 is penetrated
Pair to the end plate 22 so disposed et the protect the fins 21
While facing, a mandrel plate 24 provided with a pipe expanding mandrel 23 for expanding the plurality of pipes 20, a mandrel plate cylinder 25 that reciprocates the mandrel plate 24, and a pipe protruding from the end plate 22. Can be fitted on the protruding tube 20 to adjust the protruding length of 20
Stripper plate 28 with various strippers 26
And by reciprocating the stripper plate 28,
Front with stripper 26 installed on tripper plate 28
The stripper press for pressing the end plate 22.
It is composed of a cylinder 27 for a boot .

[0003] The case of using the expanding apparatus actuates the previously Zusu preparative <br/> ripper plates for sheet Linder 27 lowers the strip <br/> Per plate 28, the tube projecting from the end plate 22 The stripper 26 is externally fitted to 20 and the end plate 22 is pressed to determine the protruding length of the pipe 20 during pipe expansion.
It can be adjusted to the desired dimensions. Thereafter, by performing the tube expanding work by <br/> inserting a tube expanding mandrel 23 before Symbol each tube 20 is lowered to pre Kemah command <br/> barrel plate for sheet Linder 25 mandrel plates 24 to operate the Can be done.

[0004]

However, in the tube expanding device equipped with the conventional stripper,
Protects the radiating fins located on the end side of multiple radiating fins
To provided end-plates is formed in a planar shape to
If ing is, strike the tube formed by protruding from the end plate
Fit the ripper on the outside and desire the protruding length of the pipe 20 when expanding.
Although it is possible to perform dimension adjustable pipe expansion work smoothly, for example, less of the end plates depending on the specifications
At least one edge is bent to form a rising state
When the standing portion that is is provided in the end plate
Has a lower end portion of the stripper to the erected portion is in contact with
In order to press the end plates, there is a risk that the standing portions of the end plates is damaged, thus in advance the erected portion
Before pipe expansion work with a stripper attached at the abutting position
It is necessary to remove all of them. For this reason, when expanding
Whenever the specifications of the end plate change in
Tsu must be performed par mounting de, thus the work
Will be time consuming, earthenware pots have When this leads to low under the production efficiency and reduce the operating time of the tube expander extremely to
There was a serious problem.

Therefore, the present invention was devised to solve the above-mentioned conventional problems, and even if the end plate is formed with an upright portion according to the specifications, it faces the upright portion. It is an object of the present invention to provide a pipe expanding device having extremely high workability and extremely high production efficiency capable of instantaneously escaping from a standing portion and performing extremely smooth pipe expanding work without having any complicated stripper removal work. Is.

[0006]

That is, according to the present invention, a plurality of radiating fins 9 through which a plurality of tubes 10 are penetrated are located on the end side.
End plate provided to protect the radiation fin 9
A plurality of expansions are provided to face each of the pipes 10 projecting from
The pipe mandrel 1a is provided and the plurality of pipe expanding
The mandrel plates 1 a reciprocable opposite the end <br/> de plate 11 so as to the Ndoreru 1a and inserted removably into the each tube 10, the end plate and the mandrel plates 1
Provided between 11 and and protrudes from the end plate 11
Wherein the string <br/> Tsu par plate 4 provided with the stripper 6 capable fitted, the stripper plate 4 to become the tube 10
In the expanding apparatus comprising; and a <br/> stripper plate cylinder to freely reciprocate while facing the end plate 11, the stripper plate 4, attached to the stripper plate cylinder stripper a plate body 4a, a plurality of the stripper 6 is divided set <br/> vignetting Rutotomoni, in the column direction of the respective tube 10
Consists of a stripper mount 4b, deer also each of the split has been stripper mount 4b, via a stripper mount cylinder 7 to the stripper plate body 4a individually reciprocable如 <br/> rather Each is installed independently .

[0007]

In the tube expanding device having the above structure, first,
Actuates a stripper plate cylinder (not shown)
Then, the entire stripper plate 4 is lowered, and the respective pipes 10 projecting from the end plates 11 are fitted onto the respective strippers 6 by external fitting, and then the stripper plate sill is further installed.
The stripper 6 is operated to press the end plate 11 and push down the end plate 11 to a desired size.
The tube 10 projects the end plate 11 with more desired dimensions
Not only can you then play the mandrel
Each mandrel 1a provided on the mandrel plate 1 by causing the preparative cylinder 2 is actuated to lower the mandrel plates 1 I protrudes from the end plate 11
Respectively to the press-fitted out to perform the desired pipe expansion work of that tube 10
come.

Further, depending on the specifications , the edge portion is bent toward one edge portion of one side of the end plate 11 and is formed in a rising state.
When expanding a heat exchanger with a vertical standing part 11a
Operates the stripper mount cylinder 7 in advance.
Through the piston rod 7a which is extended by
Each of the stripper mounts 4b is lowered (not shown).
Cylinder for stripper plate (not shown)
Operation) to lower the stripper plate 4 as a whole
Then, with each stripper 6 from the end plate 11
Each protruding tube 10 is fitted on the outside, but at this time
Stripper mounting base 4b having stripper 6 that abuts
Shrink only through the stripper mount cylinder 7
It is possible to make it escape from the standing portion 11a.
Wherein it is possible to perform the pipe expansion work never be damaged broken <br/> the standing portion 11a by pursuant to the same process after.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the tube expanding device of the present invention will be described below with reference to the drawings.

[0010] In Figures 1 and 2, 1 denotes a plurality of mandrels 1a is a plate-like mandrel plates which are suspended in two rows state for tube expansion, the both ends of the mandrel plates 1
Has a pair of guide posts 3 inserted therethrough, and the mandrel
The mandrel plate 1 is located at a substantially central position of the rule plate 1.
The along the guide post 3 Man soil to freely up and down
A cylinder 2 for a rel plate is provided.

Reference numeral 4 indicates a position directly below the mandrel plate 1.
While location, before Symbol mandrel 1a been inserted, moreover stripper flop previous <br/> Symbol guide post 3 is inserted through the both ends
Shows the rate, the stripper plate 4, stripper pre provided at both sides of the stripper plate 4
Is connected to over preparative cylinder (not shown), and and said guide post 3 vertically movable stripper plate body 4a along, at below the stripper plate body 4a,且
One along the longitudinal direction of the stripper plate body 4a
Multiple strippers that are split and each have a substantially cylindrical shape
6 is <br/> et configuration or stripper mount 4b which is attached to a straight line, yet made are positioned individually inserted the mandrel 1a is in within the stripper 6.

Reference numeral 7 denotes the main body of the stripper plate.
4a, and the piston rod 7a is fixed to the stripper.
-Striper mounting base series installed on mounting base 4b
Cylinder for the stripper mount
Depending on the specifications of the end plate when expanding,
Each of the stripper mounts 4b can be raised and lowered.
It

[0013] Next, a description will be given of a case of using the expanding apparatus 8 having upper Ki構 formed. First, as shown in FIG.
Below the stripper mounting base 4b of the pipe expanding device 8,
Opposed to each stripper 6 mounted on the ripper mount 4b
End of a plurality of heat dissipation fins 9 through which a plurality of tubes 10 are penetrated
Part provided to protect the radiating fins 9 located on the side
A plurality of tubes 10 projecting from the band plate 11 are set.
After that, the stripper mounting cylinder 7 is operated according to the protruding length of the pipe 10 from the end plate 11 to adjust the space between the stripper plate body 4a and the stripper mounting base 4b, and then the stripper Actuating the cylinder , along the guide post 3 stripper plate body 4a
To lower the stripper mounting base 4b connected to the stripper plate body 4a, and to externally fit the stripper 6 provided on the stripper mounting base 4b to the plurality of pipes 10 and the upper part of the heat radiation fin 9 . The end plate 11 provided on the above is pressed by the stripper 6 to prevent the radiation fin 9 from being displaced when the pipe is expanded.

Thereafter, the stripper plate body 4a
The mandrel plate 1 provided above the mandrel is lowered along the guide bust 3 by operating the mandrel cylinder 2, and the mandrel 1a provided on the mandrel plate 1 is attached to the plurality of pipes fitted on the stripper 6.
The tube 10 can be expanded by inserting it into the tube 10.

Next, when there is a standing portion 11a at one edge of the end plate 11 as shown in FIG. 3, the corresponding one side of the stripper mounting base 4b provided with the stripper 6 is attached to the stripper. After the piston rod 7a of the mounting cylinder 7 is retracted to raise the one stripper mounting base 4b, the stripper plate main body 4a corresponding to the projecting length of the pipe 10 is moved in the same manner as described above. After adjusting between the stripper mounting bases 4b and 4b, the stripper plate body 4a is lowered to lower the stripper mounting base 4b, and the other stripper 6 is fitted onto the plurality of pipes 10 ...

At this time, the one stripper mounting base 4b
Can is fitted only on one of the tube 10 without contacting the standing portion 11a of the end plate 11 to which is located above.

Thereafter, the stripper plate body 4a
The mandrel plate 1 provided above the mandrel is lowered along the guide post 3 by operating the mandrel cylinder 2, and the mandrel 1a provided on the mandrel plate 1 is inserted into the plurality of pipes 10, The tube 10 can be expanded.

Therefore, even when the desired position of the end plate 11 is erected so as to come into contact with the externally fitted stripper 6 at the time of pipe expansion, the desired stripper 6 is always contacted with the desired stripper 6 during the pipe expansion. By escaping from the contacting end plate 11, it is possible to prevent the damage due to the contact between the desired surface portion of the end plate 11 and the stripper 6 and to perform the pipe expanding operation.

In the above embodiment, the stripper mount
Although the strippers 6 are linearly arranged on 4b, the arrangement of the stripper 6 of the present invention is not limited to this, and may be, for example, a staggered type, and its arrangement pattern does not matter.

Further, in the above embodiment, the stripper 6 is formed into a cylindrical body, but the point is that the stripper 6 is formed into a cylindrical body as long as it can be fitted onto the pipe 10 and can press the end plate 11. Not limited to this, a polygonal shape or a desired peephole may be provided.

[0021]

Effects of the invention] As on the ordination, expanding apparatus of the present invention is, ene
Depending on the specifications of the plate, the upright part may be
Even if it is made up of strikes,
Only strike the stripper mount with the ripper attached.
Operates the cylinder for the ripper mount and contacts the standing part
Since it escapes from the standing part without
Without having to do any complicated stripper removal work
You can perform smooth pipe expansion work that protects the standing part.
Work time can be shortened and production efficiency can be improved.
It has a remarkable effect that

[Brief description of drawings]

FIG. 1 is a partially sectional front view of a tube expanding device according to the present invention.

FIG. 2 is a partial cross-sectional side view showing a state before pipe expansion in the pipe expansion device of the present invention.

FIG. 3 is a partial cross-sectional side view showing a state during pipe expansion in the pipe expansion device of the present invention.

FIG. 4 is a perspective view of a conventional tube expanding device.

[Explanation of symbols]

 1 ... Mandrel plate 1a ... Mandrel 4 ... Stripper plate 4a ... Stripper plate body 4b ... Stripper mount 6 ... Stripper 9 ... Radiating fin 10 ... Pipe

Claims (1)

(57) [Scope of utility model registration request] 1. A plurality of radiating fins having a plurality of pipes (10) penetrating therethrough.
Protect the radiating fins (9) located on the end side of the fin (9).
Wherein each tube projecting from Ku provided et the end plate (11)
Install multiple tube expansion mandrels (1a) to face each of (10).
And a plurality of tube expanding mandrels (1a)
The end plate (11) that can be inserted into and removed from each tube (10 )
Opposed to the reciprocable mandrel plate (1), the
Between the mandrel plate (1) and the end plate (11)
Provided, and the end plate (11) projecting from the formed by <br/> pipe string <br/> Tsu Per plate provided with the fitted possible stripper (6) to (10) (4), said stripper plate ( 4)
It said to face the end plate (11) and reciprocable
In a pipe expanding device comprising a stripper plate cylinder for , the stripper plate (4)
But wherein the stripper plate stripper plate body that is attached to the cylinder (4a), said stripper (6) is provided Rutotomoni, said plurality of stripper mount which is divided into columns direction of each tube (10) (4b ) And
Each of the stripper mount, which has also been split only (4b) is, number
Reciprocable如 rather the stripper plate body people (4
husband through the stripper mount for the cylinder (7) to a) s
A pipe expanding device characterized by being installed independently .