JPH06218467A - Tube expanding device - Google Patents

Abstract

PURPOSE:To provide a tube expanding device having excellent work-ability and by which time loss in taking up after expanding, setting a succeeding work and transferring on a truck for a succeeding process is eliminated by rigidly holding an unstably constituted heat exchanger before, during and after expanding and successively transferring it to a specific position on a straight line. CONSTITUTION:A heat exchanger mounting table 3 on which each heat exchanger 8 expanded with a mandrel 6a is mounted, at least in one line, in a direction crossing the back and forth moving direction of a back and forth working body 6 is provided in the tip end direction of the mandrel provided on the back and forth working body. A heat exchanger transferring device 4 by which each heat exchanger mounted, at least in one line, on the mounting table is simultaneously held, transferred by a specific distance in one direction and simultaneously released and which is moved in the reverse direction to simultaneously hold each heat exchanger mounted on the mounting table is provided successively in a freely back and forth movable state in the vicinity of the mounting table.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe expanding device, and more particularly to a pipe expanding device provided with a heat exchanger mounting table for continuously supplying and discharging a heat exchanger and a heat exchanger transfer device.

[0002]

2. Description of the Related Art Conventionally, as a tube expanding device used in a tube expanding process of a heat exchanger, for example, as shown in FIGS.
A plurality of pipe expanding mandrels (14) are suspended from a reciprocating body (13) vertically movable via a cylinder (12), and a predetermined number of heat radiating fins (16) and heat radiating fins are provided below the reciprocating body (13). The heat exchanger 17 formed by the plurality of pipes 15 to be expanded, which are inserted into the pipe 16, is mounted on the heat exchanger mounting base 19 for setting the heat exchanger mounting base 19 in the lowered position of the reciprocating body 13. There is a tube expanding device 20 rotatably provided by a cylinder 18 and a predetermined rotating mechanism, and is appropriately used in the tube expanding step of the heat exchanger.

When the heat exchanger 17 for expanding the pipe is supplied to the pipe expanding device 20 having the above-mentioned structure, the worker himself / herself has transferred the heat exchange through a carriage (not shown) or the like. The heat exchangers 17 for pipe expansion were sequentially supplied by transferring the heat exchangers 17 to the heat exchanger mounting table 19 and sequentially setting them.

[0004]

However, as in the prior art, the operator replaces the heat exchanger, which the operator himself has transferred through a carriage (not shown), with the heat exchanger mounting table. In the case where the heat exchangers for expanding the pipes by sequentially setting them are sequentially supplied to the pipe expanding device, there are the following problems.

That is, in the tube expanding device using the conventional heat exchanger mounting table, after taking out the heat exchanger after tube expansion from the heat exchanger mounting table, the heat exchanger for performing the next tube expansion is reheated. It must be set on the exchanger mounting table, and the expanded heat exchanger must also be transferred to some transfer means and transferred to the next step.

Therefore, if a conveyer or the like for supplying the heat exchanger is installed up to the heat exchanger mounting table of the tube expanding device, complicated work etc. relating to the setting of the heat exchanger can be eliminated, but, Since the heat exchanger has a very unstable structure in which pipes for pipe expansion are simply attached to a plurality of heat radiation fins, the pipes are The heat exchanger before pipe expansion could not be simply placed on a conveyor or the like and transferred, because the heat exchanger could be removed or distorted in the overall shape of the heat exchanger.

Therefore, there is a time loss such as the take-out time of the heat exchanger after the tube expansion, the setting time of the next tube expansion heat exchanger, and the transfer time of the heat exchanger for the transfer to the next process. As a result, the operating time of the pipe expanding device is significantly hindered, and the productivity and work efficiency are significantly reduced, which is a serious problem.

However, the present invention solves all the above problems, and always holds a heat exchanger having a very unstable structure firmly before and after pipe expansion, and at the same time, the heat exchanger. Since it can be continuously transferred to a predetermined location on a straight line, it takes time to take out the heat exchanger after pipe expansion, set time for the next heat exchanger for pipe expansion, and further transfer the heat exchanger to the next process. It is an object of the present invention to eliminate the time loss such as the transfer time to a trolley or the like for the purpose of providing a tube expanding device having excellent workability and extremely high production efficiency.

[0009]

That is, the present invention is provided with a pipe expanding mandrel for press-fitting a pipe expanding mandrel into a pipe to be expanded inserted into a heat exchanger, and In a tube expanding device having a reciprocating actuator that reciprocates oppositely, in the tip direction of a mandrel provided on the reciprocating actuator, each of the heat exchangers expanded through the mandrel is reciprocated. A heat exchanger mounting table that can be mounted in at least one row in a direction intersecting the reciprocating direction of the operating body is provided, and in the vicinity of the heat exchanger mounting table along the longitudinal direction of the heat exchanger mounting table. , Simultaneously holding each of the heat exchangers mounted in at least one row on the heat exchanger mounting table and moving in one direction for a fixed distance, and after moving for a fixed distance, the held heat exchanger Open each of them at the same time and mount the heat exchanger again Lies in that the heat exchanger transferring apparatus for reverse movement in the other direction to hold placed on the heat exchanger of each simultaneously is continuously provided to freely reciprocate.

[0010]

In the tube expanding device having the above-described structure, the reciprocating body is provided with the heat exchanger 8 expanded in the direction of the tip of the mandrel 6a provided on the reciprocating body 6 through the mandrel 6a. 6 is provided with a heat exchanger mounting base 3 that can be mounted in at least one row in a direction intersecting the reciprocating direction of 6, and the vicinity of the heat exchanger mounting base 3 along the longitudinal direction of the heat exchanger mounting base 3. In addition, each of the heat exchangers 8 mounted on the heat exchanger mounting table 3 in at least one row is simultaneously held and is moved in one direction by a certain distance, and after being moved by a certain distance, the holding is performed. The heat exchanger transfer device 4 reciprocates in the other direction so as to simultaneously open each of the heat exchangers 8 and simultaneously hold each of the heat exchangers 8 placed on the heat exchanger mounting table 3 again. Since the tubes are freely connected, the tubes of the heat exchanger 8 before expansion are Not only can it be prevented from coming off from the heat fins, but also the heat exchanger 8 having an unstable structure without causing distortion in the overall shape of the heat exchanger 8 both before and after pipe expansion. It is possible to always hold 8 firmly and transfer the heat exchanger 8 continuously to a predetermined position on a straight line.

[0011]

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

In FIG. 1, reference numeral 1 denotes a pipe expanding device composed of two columns 1b standing on a base 1a.

Reference numeral 2 is a cylinder provided to vertically move a reciprocating body 6 having a pipe expanding mandrel 6a vertically suspended therein, and two cylinders are provided above the pipe expanding device 1 so as to be movable up and down through two guide posts 7. It becomes.

Below the reciprocating body 6, a flare punch plate 5 having a flare punch 5a for performing a predetermined flare process on the tube of the heat exchanger after the tube expansion is provided with a predetermined suspension rod body (not shown). (3) is suspended from the reciprocating body 6.

The heat exchanger 8 expanded by a pipe expanding mandrel 6a vertically installed on the reciprocating body 6 can be placed in a line in a direction intersecting the reciprocating direction of the reciprocating body 6. 7 shows a heat exchanger mounting table having a different heat exchanger mounting portion 3a.

The heat exchanger mounting portion 3a intersects the longitudinal direction of the heat exchanger mounting base 3 having the heat exchanger mounting portion 3a, that is, the reciprocating direction of the reciprocating body 6. A predetermined number of rotating rollers 9 are arranged in parallel so that the heat exchangers 8 placed in the respective directions can be reciprocated in a free state.

Numeral 4 designates substantially the same interval as that of the heat exchangers 8 so as to simultaneously hold the heat exchangers 8 which are sequentially mounted in a row on the heat exchanger mounting table 3, and the heat exchanger mountings The heat exchanger transfer device continuously provided along the longitudinal direction of the stand 3 is shown.

Each of the heat exchanger transfer devices 4 has a
A pair of rotatable heat exchanger holders 4b for holding each of the heat exchangers 8 mounted on the heat exchanger mounting portion 3a so as to face each other from both sides of the heat exchanger 8. A heat exchanger holding device 4a is provided, and the pair of heat exchanger holding devices 4a provided in the heat exchanger transfer device 4 are connected to a rotating device 10 that can rotate in forward and backward directions and have a predetermined pitch. A rod rod 10a having a male screw portion (not shown) formed therein is inserted, and the heat exchanger holding body 4b causes the heat exchanger 8 to move in both directions through forward and reverse rotations of the rod rod 10a. It is configured to be held or opened to face each other.

Reference numeral 11 denotes a large rodless unit provided with a horizontal reciprocating body 11a for reciprocating the heat exchanger transfer devices 4 arranged in series at a fixed distance in the longitudinal direction of the heat exchanger mounting table 3. Indicates a cylinder.

The tube expanding device according to the present embodiment has the above-described structure. Next, the case of using the tube expanding device will be described.

First, as shown in FIGS. 1 and 2 (a), the heat exchanger 8 expanded by a pipe expanding mandrel 6a suspended from the reciprocating body 6 of the pipe expanding device 1 When the heat exchangers 8 are sequentially placed on the rotating roller 9 provided side by side in the heat exchanger placement part 3a of the exchanger placement stage 3 with a predetermined gap, each of the heat exchangers 8 has the heat exchange placement stage 3a. 3 are sandwiched (arrow A) from both sides via the heat exchanger holding bodies 4b provided in the respective heat exchanger holding devices 4a of the heat exchanger transfer device 4 that are continuously provided along the longitudinal direction, It will be firmly held as shown in FIG.

Next, as shown in FIG. 3C, each of the heat exchangers 8 has a heat exchanger holding device 4a of the heat exchanger transfer device 4.
The heat exchanger transfer device 4 holding the heat exchanger 8 after being firmly held via the heat exchanger holding body 4b provided in the
Each of the heat exchangers 8 moves by moving with a horizontal reciprocating body 11a that moves in one longitudinal direction of the heat exchanger mounting table 3 along a predetermined guide rail 11b by a certain distance (arrow B). Is also transferred by a fixed distance on the rotary roller 9 arranged in parallel on the heat exchanger mounting portion 3a.

It should be noted that each of the heat exchangers 8 transferred by the above-mentioned fixed distance is, as shown in FIG.
Through the release (arrow C) of the heat exchanger holding body 4b of the heat exchanger transfer device 4 that holds the temperature, the device is temporarily opened as shown in FIG.

Next, as shown in FIG. 3C, with the heat exchanger 8 temporarily opened, the horizontal reciprocating body 11a and the heat exchanger transfer device 4 are both connected to the guide rail 11b. Move back to the initial position again (arrow D)
By doing so, each of the heat exchangers 8 mounted in a line on the rotating roller 9 juxtaposed on the heat exchanger mounting portion 3a of the heat exchanger mounting base 3 can be simultaneously held again.

Therefore, since the heat exchangers mounted on the heat exchanger mounting table can be sequentially transferred while being firmly held, the whole heat exchanger can be transferred before and after pipe expansion. Without distorting the shape etc., further taking out time of the heat exchanger after tube expansion, setting time of the next tube expansion heat exchanger, and further transfer time to a dolly etc. for transportation to the next process It is possible to eliminate various kinds of time loss such as, and to have highly efficient productivity and workability.

In the above-described embodiment, the tube expanding device includes a reciprocating body for vertically suspending a tube expanding mandrel via two cylinders provided above the tube expanding device, and two guide posts. Although it is configured to be able to move up and down, it may be a single cylinder, or four guide posts may be provided at four corners of the reciprocating body, and the reciprocating body is a pipe expanding device. It may be configured to reciprocate via an LM guide provided along a column vertically installed on the base.

Further, in the above-mentioned embodiment, in the tube expanding device, the heat exchanger mounting base 3 having the heat exchanger mounting portion having the rotating rollers arranged side by side is reciprocated by the reciprocating body. A heat exchanger expanded from one side intersecting the direction can be continuously supplied, and the heat exchanger after expansion is provided to sequentially discharge to the other side, but is not necessarily limited to a rotating roller, for example, An annular belt body (not shown) may be spanned between the rotating bodies such as the rotating rollers to form a heat exchanger mounting portion, and the heat exchanger mounting portion is further embedded and rolled at a predetermined interval. The heat exchanger mounting portion may be formed by a ball body (not shown).

Further, a rail body (not shown) in which the heat exchanger mounting portion is provided along the longitudinal direction of the heat exchanger mounting base.
And a plurality of heat exchanger mounting plates (not shown) equipped with a rotating tool (not shown) that rolls along the rail body (not shown).

Further, in the above embodiment, in the vicinity of the heat exchanger mounting table along the longitudinal direction of the heat exchanger mounting table, a plurality of heats sequentially mounted on the heat exchanger mounting table are provided. A heat exchanger transfer device continuously provided at substantially the same intervals as the heat exchangers is provided to simultaneously hold each of the heat exchangers, and each heat exchanger transfer device has the heat exchanger mounting table. And a pair of heat exchanger holding devices provided with rotatable heat exchanger holding bodies for holding the heat exchanger placed on the both sides of the heat exchanger so as to face each other from both sides thereof. Each of the pair of heat exchanger holding devices is connected to a rotating device that can rotate in the normal and reverse directions, and the heat exchanger is held by the forward and reverse rotation of a rod rod having a male screw portion (not shown) of a predetermined pitch. It consists of a structure that allows the body to rotate freely, but it is not always It does not have to be a configuration for operating the exchanger holding body, and may be power of a cylinder, an electric motor, or the like. As long as it can hold each of the heat exchangers placed on the table at the same time, it may be held from the front and rear direction of the heat exchanger, and the specific shape, quantity, installation location, etc. of the heat exchanger holding body. Is by no means limited.

Further, each of the heat exchanger transfer devices is fixed in the longitudinal direction of the heat exchanger mounting table by a horizontal moving body moving via a large rodless cylinder and a predetermined interlocking mechanism (not shown). While moving by the distance of
After moving a certain distance, it is configured to move back to the initial position again. For example, each heat exchanger transfer device has a plurality of independent independent members without a horizontal moving body and a predetermined interlocking mechanism (not shown). It may be configured to be operated by a power source such as a cylinder or an electric motor, and the point is that each of the heat exchanger transfer devices simultaneously moves in one direction by a fixed distance, and again after moving by the fixed distance. The specific reciprocating mechanism of each heat exchanger transfer device is not limited as long as it is configured to move backward to the initial position in the other direction.

Further, in the above embodiment, a plurality of heat exchangers are mounted in a row on the heat exchanger mounting table, but the number of heat exchangers is not necessarily limited to one row, and two rows and three rows are provided. Well,
The point is that if a plurality of heat exchangers can be mounted in at least one row at a predetermined interval, and each of the mounted heat exchangers can be simultaneously held and transported by a certain distance, the heat exchange is performed. The specific mechanism, shape, installation location, installation quantity, etc. of the equipment mounting table and the heat exchanger transfer device are by no means limited,
The design, etc. of the mechanism, shape, etc. of the members constituting the other parts can be arbitrarily changed within the scope intended by the present invention.

[0032]

As described above, according to the present invention, at least one row is mounted on the heat exchanger mounting table in the vicinity of the heat exchanger mounting table along the longitudinal direction of the heat exchanger mounting table. While holding each of the heat exchangers at the same time and moving in one direction by a fixed distance, and after moving a fixed distance, each of the held heat exchangers is simultaneously opened, and again on the heat exchanger mounting table. Since the heat exchanger transfer device that moves backward in the other direction is connected continuously reciprocally so as to simultaneously hold each of the placed heat exchangers, the pipes of the heat exchanger before the pipe expansion are separated from the radiation fins. Not only can it be prevented from being pulled out, but the heat exchanger with an unstable structure will always be strong without causing distortion in the overall shape of the heat exchanger both before and after expansion. Hold and transfer the heat exchanger continuously on a straight line to a predetermined location Rukoto can be.

Therefore, when the heat exchanger is expanded, each of the plurality of heat exchangers sequentially mounted on the heat exchanger mounting table is securely and firmly held by the heat exchanger transfer device in a stopped state, and Since it can be transferred sequentially, the take-out time of the heat exchanger after expansion and the setting time of the next heat exchanger,
Furthermore, it is possible to eliminate the time loss such as transfer time to a trolley for transferring the heat exchanger to the next process, and to provide a pipe expanding device with excellent workability and extremely high production efficiency. It has a great effect.

[Brief description of drawings]

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

FIG. 2 shows a transfer state of a heat exchanger in the tube expanding device of the present invention, and (A), (B) and (C) of FIG.

FIG. 3 shows a transfer state of a heat exchanger in the tube expanding device of the present invention, and (A), (B) and (C) of FIG.

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

FIG. 5 is a side view showing a supply state of a heat exchanger in a conventional tube expanding device.

[Explanation of symbols]

 1 ... Tube expansion device 3 ... Heat exchanger mounting table 4 ... Heat exchanger transfer device 4a ... Heat exchanger holding device

Claims (1)

[Claims] 1. A mandrel (6a) for expanding a pipe, which is inserted into a heat exchanger (8) to be expanded and has a mandrel (6a) for expanding the pipe, and is opposed to the pipe. In the tube expanding device (1) having the reciprocating body (6) that reciprocates,
A heat exchanger in which the mandrel (6a) provided on the reciprocating body (6) is expanded in the distal direction through the mandrel (6a).
A heat exchanger mounting table capable of mounting each of (8) in at least one row in a direction intersecting the reciprocating direction of the reciprocating body (6).
(3) is provided, and in the vicinity of the heat exchanger mounting table (3) along the longitudinal direction of the heat exchanger mounting table (3), at least one row is provided on the heat exchanger mounting table (3). Placed heat exchanger (8)
Of the heat exchangers (8) simultaneously held and simultaneously moved in a direction by a fixed distance, and after moving a fixed distance, each of the held heat exchangers (8) is opened at the same time and the heat exchanger mounting table (3 ), A heat exchanger transfer device (4) that moves backward in the other direction so as to simultaneously hold the heat exchangers (8) mounted on the pipes, and the pipe expansion device is reciprocally connected. .