JPH09253865A - Seam welding machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To always surely keep a suitable position, execute seam welding in the suitable state and satisfactorily finish seam welding by making an armature shaft of a motor almost horizontal to a base. SOLUTION: An armature shaft 2a of a motor 2 is made horizontal to a base 1. The motor 2 is made lateral to the base 2, and the total height of a seam welding machine is made equal to the top height of the motor 2 mounted laterally. In this case, the total height is made low in comparison with the motor 2 being arranged vertically. So, the seam welding working in a narrow space can comparatively easily be executed. Further, the stability of the seam welding machine at the running time can surely be kept.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention, when performing seam welding on a joint portion of a coated metal enclosure, can start a work posture at the start of seam welding in an appropriate state along the direction of seam welding. A seam welder that can be used.

[0002]

2. Description of the Related Art Conventionally, a coated metal enclosure has been widely used in which a coated metal material (mainly stainless steel such as stainless steel) is watertightly applied by seam welding (resistance welding) to the inner and outer surfaces of a structure. Has been conducted and further researched and developed. The coated metal enclosure has a plurality of coated metal building plates in which rising portions are formed on both sides in the width direction of a flat main plate, and adjacent rising portions of adjacent coated metal building plates are overlapped with each other. , Seam welding is performed to form a seam welded joint portion.

The seam welded joint is often elongated along the longitudinal direction. Therefore, in the seam welding work, a self-propelled seam welding machine is used in order to improve work efficiency and obtain a uniform finish. By the way, in the conventional type seam welding machine a currently used, as shown in FIG. 10 (A), the rotating shaft s (armature shaft) of the motor m for rotating the electrode roll is vertical. Are arranged as follows. That is, by arranging the motor so that the rotation axis s of the motor m is vertical, it becomes easy to transmit the rotational force to the driven shaft of the electrode roll which is also vertically arranged. Is.

[0004]

However, a conventional type seam welder a is used to adjoin adjacent coated metal building plates 2
When seam welding the rising portions 21 and 21 of the 0 and 20 facing each other, when the electrode m of the seam welding machine a is rotated from the start position of seam welding and the motor m for automatically traveling is started at the same time, The rotation moment M _{0 of the} rotating shaft s (armature shaft) generated at the moment when the motor m starts up is transmitted through the motor casing.

At that time, immediately after the seam welder a starts running, the seam welder a itself opposes the adjacent coated metal building plate by the rotation moment M ₀ of the rotation shaft s (armature shaft) of the motor m. The vehicle is in a state of being inclined with respect to the longitudinal direction of the rising portion, and the vehicle travels in that state (see FIG. 11). Therefore, the seam-welded rising portion is often distorted along the longitudinal direction, resulting in poor seam-welding finish.

Further, in the conventional seam welder a, since the motor m is arranged so that the rotation axis s is vertical,
If the size of the seam welder a itself in the height direction tends to be large, and therefore there is any structure above the seam weld location (such as the back side of the balcony or the bottom side of the switchboard), the seam welding The top of the machine a is stuck to the structure, and the seam welding machine a cannot enter the lower surface of the structure, which may make the work more difficult.
Alternatively, there are inconveniences such as having to change the order of steps [see FIG. 10 (B)].

[0007]

Therefore, as a result of earnest studies to solve the above-mentioned problems, the inventor provided the present invention with a sliding plate below the base and at a position above the sliding plate. An electrode roll is rotatably and symmetrically provided on a horizontal plane, an electrode roll rotation shaft of the electrode roll is supported by a bearing, and a motor for rotating the electrode roll is provided on the base, and an armature of the motor. By using a seam welder, etc., in which the shaft is approximately horizontal to the base, the seam welder runs along the longitudinal direction of the opposing rising portions of the covered metal building plate when the seam welder starts traveling. That is, it is possible to always secure an appropriate position and improve the finish of seam welding, and solve the above problem.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. First, a self-propelled seam welding machine according to the present invention includes a motor 2 on a base 1 as shown in FIGS.
And the operation part 4 is provided. The base 1 has a plate shape, and the motor 2 is securely and stably installed.

A deceleration mechanism portion 3 is directly connected to the front of the motor 2 as shown in FIGS. 2 and 3, and an armature shaft 2a of the motor 2 is directly connected to the reduction mechanism portion 3. . The armature shaft 2a is a shaft portion of the armature of the motor 2. Then, the armature shaft 2a is directly connected to the reduction mechanism unit 3,
The electrode roll mechanism B is driven via the gear mechanism A. A deceleration output shaft 10 projects from the deceleration mechanism section 3.

Further, the axial direction of the deceleration output shaft 10 projecting from the deceleration mechanism unit 3 is also horizontal with respect to the base 1, and the deceleration output shaft 10 projecting from the deceleration mechanism unit 3 is shown in FIG. Thus, the position is higher than the position of the armature shaft 2a of the motor 2. The motor 2 is arranged so that the armature shaft 2a is horizontal with respect to the base 1. Further, the armature shaft 2a may be substantially horizontal and may be slightly inclined with respect to the horizontal axis. The motor 2
An electrode roll mechanism B is provided on the front side, that is, on the speed reduction mechanism 3 side.

The electrode roll mechanism B is mainly composed of electrode rolls 5, 5, electrode roll rotating shafts 6, 6 and bearings 7, 7 (see FIGS. 1 and 6). The electrode rolls 5, 5 and the bearings 7, 7 are arranged symmetrically on the front side of the motor 2 (see FIGS. 3, 4 etc.). Then, the electrode roll 5 and the electrode roll rotating shaft 6
And the electrode roll rotating shafts 6, 6 are rotatably supported by bearings 7, 7 (see FIG. 6).

The two bearings 7 and 7 can open and close the electrode rolls 5 and 5 by appropriately adjusting the distance between them, and the electrode rolls 5 and 5 are adjacent to each other. While rotating and self-propelling while sandwiching the opposite rising portions of the coated metal building plates C, C, ..., In order to sandwich the both electrode rolls 5 and 5 in the rising portions, the two electrode rolls 5 , 5 is a mechanism that opens and closes.

As the opening / closing mechanism, a gap opening / closing mechanism 8 for changing the gap between the electrode rolls 5, 5 is provided on both bearings 7, 7. The gap opening / closing mechanism 8 is provided with pivots 8b, 8b provided on both bearings 7, 7 with an adjustment shaft 8a, and one end of the adjustment shaft 8a is slidably supported on one of the pivots 8b, 8b. And the spring 8e is attached to the pivot portion 8b on the other side.
It is supported by a bullet through. A pressing lever 8d is arranged at one end of the adjusting shaft 8a, and the pressing lever 8d
Thus, the two bearings 7, 7 are brought close to each other, and the distance between the two electrode rolls 5, 5 is adjusted (see FIGS. 1 and 4).

Driven gears 9, 9 are provided on top of the electrode roll rotary shafts 6, 6 and on the bearings 7, 7. Both driven gears 9, 9 are directly connected to the electrode roll rotation shafts 6, 6, and the rotation of the driven gears 9, 9 causes the electrode rolls 5, 5 to rotate via the electrode roll rotation shafts 6, 6 (see FIG. 1, FIG. 5 and FIG. 6).

A deceleration output shaft 10 of the deceleration mechanism 3 is provided with a worm gear 11 and a wheel gear 12 corresponding to the worm gear 11. A first drive gear 13 is integrally connected to the wheel gear 12, and the first drive gear 13 meshes with the one driven gear 9 (see FIGS. 5 and 6).

Further, the other driven gear 9 has a first
It is driven via the drive gear 13 and the second drive gear 14. Then, the left and right driven gears 9, 9 rotate in opposite directions, and accordingly, the electrode roll rotation shafts 6, 6 and the electrode rolls 5, 5 rotate in opposite directions at the same rotation speed. Has become.

Below the base 1, slide plates 15, 15 are provided at appropriate intervals. The two electrode rolls 5 and 5 are provided in a state of being close to each other substantially directly above the sliding plates 15 and 15. The sliding plates 15 and 15 slide on the covered metal building plates C, C, ... Performing seam welding with this machine [see FIGS. 9 (A) and 9 (B)].

Next, the coated metal enclosure is composed of a plurality of coated metal building plates C, C, .... The coated metal building plate C is formed of stainless steel or other stainless steel. The coated metal building plate C has rising portions 2 from both sides in the width direction of the main plate 20 which is flat and elongated in the longitudinal direction.
1, 21 are formed. Then, a plurality of coated metal building plates C, C, ...
21 is seam welded together to form a joint.

[0019]

The seam welder of the present invention is placed on the two main plates 20, 20 of the adjacent coated metal building plates C, C so that the sliding plates 15, 15 contact each other, and the electrode rolls 5, 5 are opposed to each other. The rising portions 21 and 21 are clamped with an appropriate pressure. Next, the motor 2 is started, the electrode rolls 5 and 5 are rotated in the opposite directions via the gear mechanism A, and seam welding is performed while the seam welding machine is running.

When the seam welder starts traveling, the armature shaft 2a of the motor 2 produces a rotation moment M, and the seam welder as a whole is rotated in the axial direction of the armature shaft 2a as shown in FIG. And At this time, the sliding plates 15 and 15 are grounded on both main plates 20 and 20 of the coated metal building plates C, C, ..., And the seam welder moves in the axial direction of the armature shaft 2a by the rotation moment M. Reaction force F against the force to rotate
Occurs between the sliding plate 15 and the main plate 20, and this reaction force cancels the rotational moment M, so that the stability of the seam welding machine at the time of starting the motor 2 is ensured.

The armature shaft 2a of the motor 2 is used as the base 1
Since the motor 2 is horizontal with respect to the base 1, the motor 2 is of a horizontal type with respect to the base 1, and the total height H of the seam welder is the top of the horizontal motor 2. In this case, the total height H is lower than when the motor 2 is arranged vertically. Therefore, as shown in FIG. 9 (A), the location of the covered metal enclosure under the balcony 25,
Alternatively, the seam welding work in a narrow space such as the construction of the coated metal enclosure at the construction site of the switchboard 26 can be relatively easily performed.

[0022]

According to the first aspect of the present invention, the sliding plates 15 and 15 are provided below the base 1, and the electrode rolls 5 and 5 can be freely rotated on the horizontal plane above the sliding plates 15 and 15. Are provided symmetrically, and the electrode roll rotating shafts 6, 6 of the electrode rolls 5, 5 are supported by bearings 7, 7.
The motor 2 for rotating the motor 2 is provided on the base 1, and the armature shaft 2a of the motor 2 is substantially horizontal with respect to the base 1. Therefore, first, when the seam welding machine is started, There are various effects such that the posture is stable, seam welding can be performed in an appropriate state, and secondly the structure can be simplified.

The above effects will be described in detail. The electrode rolls 5, 5
A motor 2 for rotating the motor 2 is provided on the base 1, and an armature shaft 2a of the motor 2 is substantially horizontal with respect to the base 1. Become. Therefore, when the motor 2 is started, the rotation moment M generated at the moment when the armature shaft 2a starts to rotate at high speed acts to rotate the seam welder itself in the circumferential direction of the armature shaft 2a. (See FIG. 7).

However, even if the rotational moment M occurs in the seam welder, the seam welder itself is placed on the coated metal building plates C, C, ...
Receives the reaction force F with respect to the rotation moment M from the surface of the coated metal building plates C, C, ... And cancels the rotation moment M by the reaction force F. Therefore, it is possible to prevent the seam welder from having a bad posture that adversely affects the seam welding operation due to the rotational moment M generated when the motor 2 is started, and to make a stable seam welding start state, Good seam welding work can be performed.

Further, according to the present invention, the armature shaft 2a of the motor 2 is installed substantially horizontally with respect to the base 1, and the motor 2 is set in the most stable state with respect to the base 1. . In addition, installing the motor 2 in the horizontal position can lower the center of gravity of the seam welder as compared with the case where the motor 2 is arranged vertically, thus improving the stability of the seam welder. Driving performance can be improved.

Next, according to the invention of claim 2, sliding plates 15 and 15 are provided below the base 1, and the electrode rolls 5 and 5 are rotatable above the sliding plates 15 and 15 on a horizontal plane. Is provided symmetrically, the electrode roll rotation shafts 6, 6 of the electrode rolls 5, 5 are supported by bearings 7, 7, and a motor 2 for rotating the electrode rolls 5, 5 is provided on the base 1. Motor 2
The reduction gear mechanism 3 is directly connected to the armature shaft 2 of the motor 2.
a and the deceleration output shaft 10 of the deceleration mechanism section 3 are seam welders that are substantially horizontal to the base 1,
Along with the armature shaft 2a of the motor 2, the deceleration output shaft 10 of the deceleration mechanism portion 3 directly connected to the motor 2 is also horizontal with respect to the base 1.

Therefore, the rotational force of the driving part for traveling of the seam welding machine, except for the electrode rolls 5 and 5, is
Since the seam welder is in the horizontal direction, only the rotation moment M with respect to the horizontal direction of the seam welder can be used, and the posture of the seam welder at the start of the seam welding can be further stabilized.

Next, in the invention of claim 3, sliding plates 15 and 15 are provided below the base 1, and the electrode rolls 5 and 5 are arranged above the sliding plates 15 and 15 so as to be rotatable on a horizontal plane. A motor 2 that is provided symmetrically, supports the electrode roll rotation shafts 6, 6 of the electrode rolls 5, 5 with bearings 7, 7, and rotates the electrode rolls 5, 5 is provided on the base 1. Two
The reduction gear mechanism 3 is directly connected to the armature shaft 2 of the motor 2.
a and the deceleration output shaft 10 of the deceleration mechanism unit 3 are substantially horizontal with respect to the base 1, and the deceleration output shaft 10 includes the electrode roll 5,
Since the seam welding machine has the same height as the tops of the electrode roll rotary shafts 6 and 6, the top height position of the motor 2 and the top position of the electrode roll rotary shafts 6 are approximately the same. Therefore, the total height H of the seam welder can be set to the highest position when the motor 2 is placed horizontally.

Therefore, in the seam welder of the present invention, the total height H can be made lower than that of the conventional drive motor having a vertical shape (see FIG. 10), as shown in FIG. 9 (A). As shown in FIG. 9 (B), or under the portion where the balcony 25 is installed, it is possible to enter a narrow place with a low height such as the lower side of the frame of the switchboard 26, etc. There is also an advantage that is hard to be restricted by. Further, by reducing the total height H, the center of gravity of the seam welder of the present invention can be lowered, and the stability of the seam welder during traveling can be ensured.

[Brief description of drawings]

FIG. 1 is a perspective view of a seam welder of the present invention.

FIG. 2 is a side view of the seam welder of the present invention.

FIG. 3 is a plan view of the seam welder of the present invention.

FIG. 4 is a front view of the seam welder of the present invention.

FIG. 5 is a plan view of the essential portions of the seam welder of the present invention.

FIG. 6 is a perspective view of a gear mechanism portion and an electrode roll mechanism portion of the seam welding machine of the present invention.

FIG. 7 is a schematic diagram showing the action of the rotational moment of the seam welding machine of the present invention when the motor is started on the machine.

FIG. 8 is a schematic diagram showing a reaction force generated from a sliding plate and a coated metal building plate with respect to a rotation moment at the time of starting the motor of the seam welding machine of the present invention.

FIG. 9 (A) is a schematic view showing a state in which the seam welder of the present invention can enter a narrow space at a lower portion such as a balcony construction site. FIG. 9 (B) is a schematic view of the seam welder of the present invention traveling under a switchboard or the like. Schematic diagram showing the state

FIG. 10A is a side view of a conventional type seam welder, and FIG. 10B is a schematic view showing a running state of the conventional type seam welder.

FIG. 11 is a schematic view showing a state in which a conventional type seam welder runs while keeping its posture when starting.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Base 2 ... Motor 2a ... Armature shaft 3 ... Reduction mechanism part 5 ... Electrode roll 6 ... Electrode roll rotating shaft 7 ... Bearing 10 ... Deceleration output shaft 15 ... Sliding plate

Claims (3)

[Claims] 1. A sliding plate is provided below a base, and an electrode roll is provided above the sliding plate symmetrically so as to be rotatable on a horizontal plane, and an electrode roll rotating shaft of the electrode roll is a bearing. A seam welding machine, wherein a motor for supporting and rotating an electrode roll is provided on the base, and an armature shaft of the motor is substantially horizontal to the base. 2. A sliding plate is provided below the base, and an electrode roll is provided above the sliding plate symmetrically so as to be rotatable on a horizontal plane, and an electrode roll rotating shaft of the electrode roll is a bearing. A motor for supporting and rotating the electrode roll is provided on the base, and the deceleration mechanism is directly connected to the motor. The armature shaft of the motor and the deceleration output shaft of the deceleration mechanism are substantially horizontal to the base. A seam welding machine characterized in that 3. A sliding plate is provided below the base, and an electrode roll is provided above the sliding plate in a symmetrical manner so as to be rotatable on a horizontal plane, and an electrode roll rotating shaft of the electrode roll is a bearing. A motor for supporting and rotating the electrode roll is provided on the base, and the deceleration mechanism is directly connected to the motor. The armature shaft of the motor and the deceleration output shaft of the deceleration mechanism are substantially horizontal to the base. The seam welding machine is characterized in that the deceleration output shaft has substantially the same height as the top of the electrode roll rotating shaft of the electrode roll.