KR100858212B1 - Automatic welding device for aluminum ladder - Google Patents

Abstract

An automatic welding apparatus for an aluminum ladder is provided to improve productivity and secure operational safety by allowing welding torches to perform uniaxial and biaxial planar motions above a ladder base metal, thereby automatically welding a plurality of joints of the ladder base metal. An automatic welding apparatus for an aluminum ladder comprises: a frame(20) having a base metal table(24) and welder transfer supports(28); a ladder base metal clamp unit installed on a central part of the frame to clamp a ladder base metal; one or more of biaxial torch moving units(40) on which one or more of gas welders(100) are mounted to induce a biaxial motion of welding torches connected to the gas welders in an upper part of the ladder base metal fixed by the ladder base metal clamp unit; and one or more of welding torch grippers(54) connected to the biaxial torch moving units to support the welding torches, wherein the frame includes: a base(22); the base metal table disposed on a central part of the base; columns which are positioned at both sides of the base metal table and stand erect on the base; and the welder transfer supports connected to top parts of the columns.

Description

Automatic welding device for aluminum ladder

The present invention relates to an aluminum ladder automatic welding device, and more particularly, to an aluminum ladder automatic welding device that enables one-axis and two-axis planar motions of the welding torch to automatically perform welding at the joint of the ladder base material.

In general, a ladder is a necessary tool for working in height by allowing you to step on and climb. At present, the ladder is manufactured using a lot of light weight aluminum base material in consideration of transport and mobility.

In the case of a ladder made of an aluminum base material, it is composed of a foot placed in the longitudinal direction to the left and right, and a foot tread connecting the left and right expectations. At this time, the foot stool is connected to the base by riveting, clamping compression or argon welding.

However, since the conventional argon welding method is made by hand by a welder, there was no limit to productivity. In addition, skilled welders are required to increase the manufacturing cost, there is no problem of inferior work safety, such as gas suffocation.

Accordingly, the present invention has been made in view of the above circumstances, and the welding torch can automatically perform welding to a plurality of joints of the ladder base material in one-axis and two-axis plane motions on the ladder base material, thereby improving productivity. The purpose of the present invention is to provide an automatic automatic welding apparatus for aluminum ladders, which reduces manufacturing costs and prevents work safety.

Specific means of the present invention for achieving the above object,

In the device for automatically welding the joint of the ladder base material,

A frame having a base table and a welder conveying support;

A ladder base clamp unit installed at the center of the frame to clamp the ladder base material;

At least one torch biaxial movement unit for mounting at least one gas welder and for inducing biaxial movement on the ladder base material fixed by the ladder base material clamp unit to the welding torch connected with the gas welder; And

It is characterized in that it comprises a welding torch gripper connected to the two-axis movement unit for supporting the welding torch.

Also according to the invention,

The frame is

A base;

The base material table disposed at the center of the base;

Columns positioned on both sides of the base material table and placed in the base;

It characterized in that it comprises a welder transfer support connected to the top of the column.

Also according to the invention,

Ladder base clamp unit,

A plurality of base jigs provided opposite the base material table to support both bases;

An expectation fixing cylinder for pushing and securing the expectation to the expectation jig side;

A first foot rest fixing cylinder for fixing the foot rest base material fixed to the base on both sides;

It characterized in that it comprises a second foot rest fixed cylinder for fixing by pressing the foot rest downward through the link mechanism.

Also according to the invention,

Torch 2-axis exercise unit

A Y-axis feed servomotor fixed to the welder feed support side;

A Y-axis feed screw for rotating by the rotational force of the Y-axis feed servo motor;

A Y-axis plate connected to the ball nut of the Y-axis feed screw and supported by the welder feed support to be transferred to the Y-axis;

A servo motor for X axis transport fixedly mounted on a Y axis plate;

An X-axis feed screw for rotating by the rotational force of the X-axis feed servo motor;

It is characterized in that it comprises an arm connected to the ball nut of the X-axis feed screw and the welding torch gripper is installed.

Also according to the invention,

The arm further comprises a Z-axis fine adjusting screw for finely adjusting the welding torch gripper to the Z-axis.

Also according to the invention,

The arm further includes a Y-axis fine adjusting screw for finely adjusting the welding torch gripper to the Y-axis.

According to the aluminum ladder automatic welding device of the present invention, the welding torch can perform a single axis and two axis plane motion by the servo motor on the ladder base material to automatically weld the connection part of the base of the ladder base and the foot rest.

Therefore, the productivity of the ladder increases per hour, productivity is improved, and skilled welders are unnecessary, thereby reducing the manufacturing cost of the ladder. In addition, since there is no need for a welding worker in the workplace, there is an advantage that there is no concern for safety of work.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Aluminum ladder automatic welding device 10 according to the present invention is provided with a frame 20 as shown in Figs. FIG. 1 is a front view of the aluminum ladder automatic welding device 10, FIG. 2 is a right side view of FIG. 1, and FIG. 3 is a plan view of FIG.

The frame 20 is disposed at both the base 22 and the base table 24 arranged at the center of the base 22 to fix the ladder base material 1, and before and after the base material table 24, respectively. It is provided with a column 26 placed in the base 22 and two welder feed supports 28 connected to the upper end of the column 26. Preferably the two welder feed supports 28 are arranged in the form of a ladder. Here, the ladder base material means a plurality of foot rests 3 joined to two bases 2 and 2 as shown in FIG. 8.

The base material table 24 is provided with a ladder base material clamp unit 30 for fixing the ladder base material to the base material table 24 as shown in FIGS. 4A to 5. FIG. 4A is a cross-sectional view seen from the line A-A of FIG. 3, FIG. 4B is a cross-sectional view seen from the line B-B of FIG. 3, and FIG. 5 is a state diagram of the clamping operation of the footrest seen from the line C-C of FIG.

The ladder base material clamp unit 30 is provided to the left and right of the upper surface of the base material table 24 so as to face each other, and a pair of base jigs 32 supporting both bases 2 are provided at regular intervals.

In addition, as shown in Figs. 3 to 4b, the base material table 24 is provided with a plurality of pairs of base fixing cylinders 34 for pushing and fixing the left and right bases 2 to the corresponding base jig 32 side at regular intervals. Is installed. In addition, the base material table 24 is provided with a first foot rest fixing cylinder 36 for positioning the foot rest 3 seated on the base 2. The fixed cylinder 36 is connected with a bracket 37 having a stopper 37 'for contacting the side of the foot rest 3.

In addition, the base material table 24 is provided with a plurality of second foot rest fixing cylinders 38 which press the foot rest 3 downward through the link mechanism and fix the foot rest 3 to the base 2 side at regular intervals.

As shown in FIG. 5, a first link 39a is hinged to the piston rod of the second foot support fixed cylinder 38, and a stopper 39b-1 made of rubber or synthetic resin is connected to the first link 39a. The second link 39b having a hinge is connected, and the second link 39b is hinged to an upper end of the third link 39c placed in the base material table 24.

Therefore, the fixed cylinder 38 rotates the second link 39b to fix the foot rest 3 with the stopper 39b-1.

Two or more gas welders 100 are mounted on the left and right welder feed supports 28 and two welding torch 102 connected to the gas welder 100 induces two-axis planar motions above the base material table 24. Torch biaxial motion unit 40 is provided, respectively. That is, the torch biaxial movement unit 40 is provided to biaxially move the welding torch 102 on the ladder substrate 1 clamped to the ladder substrate clamp unit 30 as shown in FIGS. 3 and 8. Figure 8 shows a plan view of the ladder base material.

One torch biaxial movement unit 40 is equipped with two gas welders 100.

One torch biaxial movement unit 40 will be described.

Torch biaxial movement unit 40 is shown in detail in FIGS. 3 and 6. 6 is an enlarged view of the torch biaxial movement unit 40 in FIG. 2. Torch biaxial movement unit 40 is a power transmission means (eg, timing belt) by the rotational force of the Y-axis feed servomotor 42 and the Y-axis feed servomotor 42 fixed to the welder feed support 28 side. Y-axis feed screw (44) rotated by the drive and the ball nut 45 of the Y-axis feed screw 44, and is supported on the welder feed support 28 and Y-axis plate that can be transferred to the Y-axis ( 46), the X-axis feed screw (50) fixed on the Y-axis plate (46), the X-axis feed screw (50) which rotates and rotates with the rotational force of the X-axis feed servo motor (48), and X And an arm 52 connected to the ball nut 51 of the shaft feed screw 50 and provided with a welding torch gripper 54. At this time, the arm 52 is guided by the X-axis movement through the linear guide 53.

The Y-axis plate 46 is slidably movable through the linear guide 29 to the welder conveying support 28, and two gas welders 100 are mounted on the Y-axis plate 46.

The arm 52 is provided with two welding torch grippers 54 to simultaneously perform two welding portions of the footrest 3, and each of the two welding torch grippers 54 is provided with two gas welders 100. Each connected welding torch 102 is connected one by one.

FIG. 7 is an enlarged view of the torch fine tuning device of FIG. 2. Arm 52 may further include a Z-axis adjustment screw 56 for finely adjusting the welding torch gripper 54 in the Z-axis, as shown in FIG. In addition, the arm 52 may further include a Y-axis fine adjustment screw 58 for finely adjusting the welding torch gripper 54 to the Y-axis.

At this time, the Z-axis fine adjustment screw 56 is rotatably supported on the arm 52 side, Z-axis fine adjustment screw 56 is Z-axis feed block 57 is screwed, Z-axis feed block ( 59, a Y-axis feed block 59 is coupled to the Y-axis direction to be transported, the Y-axis feed block 59 is screwed to the Y-axis fine adjustment screw (58).

Therefore, when the Z-axis fine adjustment screw 56 is rotated and adjusted, the Z-axis feed block 57 moves up and down in accordance with its rotational direction, and the position of the torch 102 is adjusted up and down. In addition, when the Y-axis fine adjustment screw 58 is rotated, the Y-axis feed block 59 is moved forward and backward in accordance with the rotational direction thereof to adjust the front and rear positions of the torch 102.

Meanwhile, as shown in FIG. 4B, a pair of setting cylinders 39 disposed in opposite directions to each other may be further provided on the base material table 24 to initially push the base 2 toward the base jig 32.

The operation of this embodiment configured as described above will be described.

First, the left and right bases 2 of the ladder base material 1 are supported on the base material table 24 as shown in FIG. 4A.

At this time, the base fixed cylinder 34 operates in a state in which the left and right bases 2 are respectively positioned inside both of the base jigs 32. Therefore, the left and right bases 2 are pushed and fixed to both base jigs 32 by the base fixing cylinder 34. At this time, the stopper 39b-1 is bent upward by the second footrest fixing cylinder 38.

Next, the first footrest 36 is operated to provide the position where the footrest 3 is to be placed.

In this state, in this embodiment, thirteen footrests 3 are arranged on the upper surfaces of the bases 2, 2 at regular intervals. At this time, all the foot rest 3 is seated on the upper surface of the foot rest support bracket 33 placed on the base material table (24).

Thereafter, the second foot rest fixing cylinder 38 is operated to press the foot rest 3 downward through the stopper 39-1.

Then, the arm 52 of the torch biaxial movement unit 40 performs the X and Y axis plane motion by the Y axis feed servomotor 42 and the X axis feed servomotor 48.

Therefore, the two torches 102 provided on the arm 52 operate simultaneously to gas weld two joining portions of the base 2 and the footrest 3 as shown in FIG. At this time, the torch 102 is welded by the argon gas and the welding rod supplied from the gas welder 100.

At this time, the Y-axis movement of the torch 102 is made by the Y-axis linear movement of the Y-axis plate 46 is transferred by the Y-axis feed screw 44 rotated by the drive of the Y-axis feed servomotor 42 , X-axis movement is made by the X-axis linear movement of the arm 52 is transferred by the X-axis feed screw 50 that is rotated by the drive of the X-axis feed servomotor 48.

Therefore, the aluminum ladder automatic welding device 10 of the present invention, while moving in the longitudinal direction along the left and right welder feed support 28, the welding portion of the ladder base material (1) while simultaneously or selectively performing the two-axis movement of X, Y At the same time left and right welding (4) as shown in FIG.

That is, in this embodiment, the welding of the ladder base material 1 is automatically performed with the X-axis movement of the torch 102, and the movement of the welding position is automatically controlled by the torch 102 with the Y-axis and the X- and Y-axis movements. It is done.

As described above, in the aluminum ladder automatic welding device 10 of the present invention, the welding torch 102 is subjected to the uniaxial and biaxial plane motion by the servomotors 42 and 48 on the ladder base material 1, as shown in FIG. 2) and the welding portion (4) of the foot rest (3) can be carried out automatically welding. Figure 9 shows an enlarged view of the ladder base metal weld.

Therefore, productivity increases per hour, and productivity is improved, and a skilled welder is unnecessary, thereby reducing the manufacturing cost of the ladder. In addition, the welding operator is unnecessary during the welding operation, and thus there is no concern about safety of work such as gas suffocation.

In the present embodiment, the first footrest fixing cylinder 36 is installed on only one side of the base material table 24, but the present invention may install both the first footrest fixing cylinders 36 on both sides of the base material table 24. .

Also, as shown in FIG. 4B, the substrate fixing cylinder 34 may be operated after the substrate 2 is first pushed to the substrate jig 32 using the setting cylinder 39 installed on the base material table 24.

As described above, although the present invention has been described by way of limited embodiments and drawings, the present invention is not limited thereto, and the technical idea of the present invention and the following by those skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the scope of equivalents of the claims to be described.

The following drawings, which are attached in this specification, illustrate preferred embodiments of the present invention, and together with the detailed description of the present invention, serve to further understand the technical spirit of the present invention. It should not be construed as limited to.

1 is a front view of the automatic aluminum ladder welding apparatus according to the present invention.

2 is a right side view of FIG. 1;

3 is a plan view of FIG.

4A is a cross sectional view taken along the line A-A of FIG. 3;

4B is a cross-sectional view taken along line B-B of FIG. 3.

5 is an operation state view seen from the line C-C of FIG.

Figure 6 is an enlarged view of the torch biaxial movement unit in FIG.

FIG. 7 is an enlarged view of the torch fine tuning device of FIG. 2; FIG.

8 is a plan view of a ladder base material.

9 is an enlarged view of a ladder base material welding part.

<Explanation of symbols for the main parts of the drawings>

20: frame

22: base

24: base material table

26: column

28: welder feed support

30: ladder base clamp unit

32: expectation jig

34: substrate fixing cylinder

36: first footrest fixed cylinder

40: torch 2-axis movement unit

42: Y-axis feed servomotor

44: Y axis feed screw

46: Y-axis plate

48: Servomotor for X Axis Feeding

50: X axis feed screw

54: gripper

56: Z axis fine adjustment screw

58: Y-axis fine adjustment screw

Claims (6)

delete In the device for automatically welding the joint of the ladder base material, A frame 20 having a base material table 24 and a welder feed support 28; A ladder base material clamp unit (30) installed at the center of the frame (20) to clamp the base material of the ladder; At least one torch 2 for mounting at least one gas welder 100 and inducing a biaxial movement on the ladder base material fixed by the ladder base clamp unit 30 to a welding torch 102 connected with the gas welder 100. Axial motion unit 40; And One or more welding torch grippers (54) connected to the biaxial movement unit (40) to support the welding torch (102); The frame 20, A base 22; The base material table 24 disposed at the center of the base 22; Columns 26 positioned on both sides of the base material table 24 and placed in the base 22; Automatic welding apparatus for aluminum ladders, characterized in that it comprises the welder feed support (28) connected to the top of the column (26). In the device for automatically welding the joint of the ladder base material, A frame 20 having a base material table 24 and a welder feed support 28; A ladder base material clamp unit (30) installed at the center of the frame (20) to clamp the base material of the ladder; At least one torch 2 for mounting at least one gas welder 100 and inducing a biaxial movement on the ladder base material fixed by the ladder base clamp unit 30 to a welding torch 102 connected with the gas welder 100. Axial motion unit 40; And One or more welding torch grippers (54) connected to the biaxial movement unit (40) to support the welding torch (102); The ladder base clamp unit 30, A plurality of base jigs (32) installed opposite the base material table (24) for supporting both bases (2); A base fixing cylinder 34 for pushing the base 2 toward the base jig 32 and fixing the base 2; A first foot rest fixing cylinder (36) for positioning the foot rest base material (3) to be seated on the base (2); Aluminum foot automatic welding device, characterized in that it comprises a second foot support fixing cylinder (38) for fixing by pressing the foot rest (3) downward through a link mechanism. In the device for automatically welding the joint of the ladder base material, A frame 20 having a base material table 24 and a welder feed support 28; A ladder base material clamp unit (30) installed at the center of the frame (20) to clamp the base material of the ladder; At least one torch 2 for mounting at least one gas welder 100 and inducing a biaxial movement on the ladder base material fixed by the ladder base clamp unit 30 to a welding torch 102 connected with the gas welder 100. Axial motion unit 40; And One or more welding torch grippers (54) connected to the biaxial movement unit (40) to support the welding torch (102); The torch biaxial movement unit 40, A Y-axis feed servomotor 42 fixed to the welder feed support 28; A Y-axis feed screw 44 for rotating by the rotational force of the Y-axis feed servo motor 42; A Y-axis plate 46 connected to the ball nut of the Y-axis feed screw 44 and supported by the welder feed support 28 to be transferred to the Y-axis; An X-axis feed servomotor 48 fixedly mounted on the Y-axis plate 46; An X-axis feed screw 50 which rotates with the rotational force of the X-axis feed servo motor 48; Aluminum arm automatic welding device, characterized in that it comprises an arm 52 is connected to the ball nut of the X-axis feed screw (50) and the welding torch gripper (54) is installed. The method of claim 4, wherein The arm (52) aluminum ladder automatic welding device further comprises a Z-axis fine adjustment screw (56) for finely adjusting the welding torch gripper (54) to the Z-axis. The method of claim 4, wherein The arm (52) aluminum ladder automatic welding device further comprises a Y-axis fine adjustment screw (58) for finely adjusting the welding torch gripper (54) to the Y-axis.

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