KR101363755B1 - Ultra thin metal conveyor belt welding equipment - Google Patents

Abstract

The present invention relates to a welding device which welds both ends of a metallic thin plate (1) in order to form a belt (B) of the metallic thin plate. The welding device comprises: a body unit (10) with a welding jig (11), in which the thin plate (1) is seated, and a controller on one side (15), which inputs and outputs signals according to a sequence; a clamping unit (20) with at least one or more pressing plates (21) on the upper part of the welding jig (11) and a tube (25) which fixes the thin plate (1) by the rotation of the pressing plate (21); a welding unit (30) with a welding torch (31) which forms the belt (B) by integrally welding both ends of the thin plate (1) on the upper part of the pressing plate (21); and a discharge unit (40) with a discharge table (45) on the body (10) which is capable of being rotated by a cylinder (41) in order to discharge the belt (B) made of the thin plate (1) to the outside. According to the present invention, the welding device can improve overall productivity by automatically welding both ends of the thin plate with the welding torch which is operated in multiple directions via relatively simple manipulation. Furthermore, a belt with good quality and long lifetime can be manufactured as the specifications required for the belt is satisfied with excellent precision, which prevents residual stress and cracks, compatibility capable of utilizing various thin plates according to purposes and a conveyor by setting positions by a user and a numerical control.

Description

Welding device for ultra thin metal conveyor belts {Ultra Thin Metal Conveyor Belt welding equipment}

The present invention relates to a welding device for joining both ends to make the ultra-thin metal sheet into a belt, and more specifically, it is possible to automatically weld both ends of the sheet through a welding torch moving in the multi-axis direction with a relatively simple operation. Improves overall productivity, quality and lifespan by satisfying the specifications required for the belt with excellent precision to prevent cracks and residual stresses as well as compatibility to apply various thin plates according to the conveyor and application by positioning by user and numerical control. It relates to a welding device for the ultra-thin metal conveyor belt to ensure the.

In general, a conveyor is a machine that automatically and continuously conveys materials, cargo, and products between a certain distance. A conveyor is a device that transfers goods on a belt while circulating in a caterpillar by connecting belts between a plurality of pulleys. . At this time, the belt used in the conveyor is made of a variety of materials, such as resin or metal, depending on the type of conveyance, the shape also has a variety of structures, such as plate-shaped, mesh-like, weaving.

Here, the metal thin belt is typically made of stainless steel, and both ends of a thin metal sheet of about 0.1 to 0.5 mm are welded in an endless track like a belt. These ultra-thin metal belts are widely used in process lines that require hygiene and cleanliness of food, chemicals, electronic parts, etc., depending on the characteristics of their materials. It is a special belt that can carry out grinding and polishing at the same time.

As is well known, ultra-thin metal belts require very difficult welding techniques to meet both the desired stiffness, ductility and balance so that the machine motion is suitable. That is, conventionally, the thin plate 1 of metal manufactured to a predetermined size and thickness was cut into a width and length applicable to the conveyor C, and welded by hand so that both ends of the cut thin plate 1 were joined. However, when both ends of the thin plate (1) in the welding process is in a state slightly misaligned, a serious problem occurs that the zig-zag phenomenon occurs in one direction because it is not in close contact with the loose surface. In addition, when the thickness of the beads due to welding at both ends of the thin plate 1 is not constant, a problem occurs that causes a fatal defect of the conveyed material with noise due to vibration on the pulley surface. As such a high level of welding technology is required, there is a limit to manual work, and the precision thereof is also significantly reduced, resulting in a problem of lowering overall productivity due to defects.

On the other hand, as a part to solve the local problem of the thin metal belt, Korean Patent Publication No. 10-0945313 "steel sheet for metal belt and its manufacturing method excellent in strength, ductility and toughness and metal belt and its manufacturing method" and , Korean Patent Publication No. 10-0969719 proposes a "method for manufacturing a metal belt and a jig therefor".

However, it is proposed to improve the mechanical properties and precision as an adjustable jig for manufacturing a metal belt like the latter together with the improvement of the material of the steel sheet used for the metal belt like the former. However, since the improvement related to welding, which is the most important process in manufacturing the metal belt, is insufficient, there is an urgent need for a solution to solve this problem.

Korean Patent Publication No. 10-0945313 "Steel sheet for metal belt with excellent strength, ductility and toughness and its manufacturing method and metal belt and its manufacturing method" Korean Patent Publication No. 10-0969719 "Method for manufacturing metal belt and jig therefor"

Accordingly, the present invention is to fundamentally solve the conventional problems as described above, it is possible to automatically weld both ends of the thin plate through a welding torch moving in the axial direction with a relatively simple operation to improve the overall productivity, the user Ultra-thin plate that can secure the quality and lifespan by satisfying the specifications required for the belt with excellent precision that prevents cracks and residual stresses as well as compatibility that can be applied to various thin plates according to the conveyor and application by positioning by means of numerical control It is an object of the present invention to provide a welding device for belts for metal conveyors.

In order to achieve the above object, the present invention provides a welding apparatus for joining both ends to belt a thin metal sheet, comprising: a welding jig for seating the thin plate, and a controller for inputting and outputting signals according to a sequence on one side. Main body portion; A clamping part having one or more pressing plates on the welding jig and having a tube fixing the thin plate by the rotation of the pressing plate; A welding part including a welding torch integrally welding both ends of the thin plate to the belt on the pressing plate; And a discharge unit having a discharge table rotatable by a cylinder to discharge the thin plated belt on the main body to the outside.

At this time, the welding part according to the present invention is characterized in that the Z-axis actuator for moving the welding torch up and down on both ends of the thin plate, and the X-axis actuator for moving from side to side are automatically welded in conjunction with each other.

In addition, the welding portion according to the present invention is characterized in that it further comprises a Z, Y-axis adjuster for finely adjusting the position of the welding torch in micro units on the top.

In addition, the welding part according to the present invention further comprises one or more measuring sensors and inspection equipment to improve the weldability at one end of the welding torch, the measuring sensor using a laser or a camera to measure the beads while tracking the weld line, The inspection equipment is characterized by using only one of radiation, ultrasound, current, barometric pressure.

It should be understood, however, that the terminology or words of the present specification and claims should not be construed in an ordinary sense or in a dictionary, and that the inventors shall not be limited to the concept of a term It should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be properly defined. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention, and not all of the technical ideas of the present invention are described. Therefore, It is to be understood that equivalents and modifications are possible.

As described in the above configuration and operation, the present invention can automatically weld both ends of the thin plate through the welding torch moving in the multi-axis direction with a relatively simple operation to improve the overall productivity, positioning by the user and numerical control With the compatibility that can be applied to various thin plates according to the conveyor and application, and the excellent precision to prevent cracks and residual stress, it meets the specifications required for the belt and provides the effect of ensuring quality and life.

1 is a perspective view showing a metal belt by a welding apparatus according to the present invention.
Figure 2 is a schematic view showing the welding apparatus according to the present invention from the front and side.
Figure 3 is an enlarged configuration diagram showing the main portion of the welding apparatus according to the present invention.
4 to 7 is a state diagram showing the welding process of the welding apparatus according to the present invention.

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

The present invention relates to a welding device for joining both ends to make the metal thin plate (1) into a belt (B), the main body portion 10, the clamping portion 20, the welding portion 30, the discharge portion 40 It is related to welding device of metal belt for conveyor. 1, both ends 1a and 1b of the present invention are connected to a pair of pulleys provided on the conveyor C to make the belt B circulated in an endless track as shown in FIG. Automatic and precise welding is the main point. The metal belt (B) manufactured according to the present invention is capable of conducting its own energization while continuously transporting materials such as materials, cargo, and products at a predetermined distance, thereby causing an electrochemical reaction to remove residues of the materials, coating, polishing, and the like. It is a special belt that can perform simultaneously.

The main body 10 according to the present invention includes a welding jig 11 for mounting the thin plate 1, and has a controller 15 for inputting and outputting signals in sequence on one side. The main body portion 10 is a box-shaped frame each having a clamping portion 20, a welding portion 30, and a discharge portion 40, which will be described later as shown in FIGS. 2 and 3, and a welding jig 11 for seating the thin plate 1. And a controller 15 for implementing automation.

The welding jig 11 is positioned in the center of the main body 10 as shown in FIGS. 2 and 3, and has a flat bed on a top surface in a circular roll type having a predetermined length. That is, the welding jig 11 plays a role of seating both ends (1a) (1b) of the thin plate (1) in the state engaged with each other in the center of the bed. Although the welding jig 11 is not illustrated through a separate drawing, the welding jig 11 may be formed in a rectangular bar type. When the welding jig 11 is formed in a bar type, the upper surface is flat in itself, and thus there is an advantage of not having a bed. However, since both sides (1a) (1b) of the thin plate 1 is likely to cause scratches on the surface due to deflection due to its own weight, it is preferable to form a circular roll type to prevent this. Of course, even when formed into a bar type can be prevented from scratches by forming a smooth rounded corners, those skilled in the art can be selectively used in the roll type or bar type based on the quality and efficiency according to the manufacturing.

The controller 15 is located on one side of the main body 10 as shown in FIG. 2, and is a PLC that controls and senses operation of the clamping unit 20, the welding unit 30, and the discharge unit 40 according to a set sequence. The controller 15 allows input of a setting value according to the thickness and width (length) of the thin plate 1, outputs a signal to automatically perform welding according to the setting value, and in real time from the measuring sensor and the inspection equipment. It receives the signal and feedback control the output signal. In addition, it continuously outputs relevant images on the display for the operator to monitor with the naked eye, and connects to the internet network and transmits data on the web so that the buyer (buyer) can check the product history.

In addition, the clamping unit 20 according to the present invention includes one or more pressing plates 21 on the welding jig 11, and the tube 25 fixing the thin plate 1 by the rotation of the pressing plates 21. ). The clamping part 20 is a pressing plate for fixing both ends (1a) (1b) of the thin plate 1 in the state engaged with each other in the welding jig 11 before welding through the welding portion 30 to be described later, as shown in Figs. 21 and the tube 25 are provided.

The pressure plate 21 is rotatably positioned at both upper sides of the welding jig 11 by the hinge H1 as shown in FIG. 3, and is provided at the spring S in a state spaced apart from the welding jig 11 at all times. Although the pressure plate 21 may be integrally formed as the length corresponding to the welding jig 11, it is preferable to form the pressure plate 21 to be divided into one or more for more accurate flatness. Here, the upper portion of the pressure plate 21 is provided with a tube 25 that contracts / expands by pneumatic pressure to fix the thin plate 1 by rotation.

That is, when the tube 25 is expanded by pneumatic state in which both ends 1a and 1b of the thin plate 1 are mutually engaged with the welding jig 11, the pressing plate 21 rotates from the hinge H1, and the thin plate Both ends 1a and 1b of (1) are fixed. Here, the tube 25 may be operated at the same time by the left and right (see Fig. 3) by a single valve from the pneumatic line, but separate to fix the both ends (1a) (1b) of the thin plate (1) in a more precise position It is preferable to operate the left and right separately by the valve of.

On the other hand, the reason why the tube 25 is used while dividing the pressing plate 21 into one or more is to fix the both ends 1a and 1b of the thin plate 1 more precisely. That is, the longer the length of the pressure plate 21 is because the error occurs due to mechanical properties and processing limitations. And the tube 25 can be operated simultaneously with the same pressing force even if the pressing plate 21 is divided into one or more, and above all, even if there is an error between the pressing plates 21 can compensate for this.

The pressure plate 21 and the tube 25 are structural results obtained through an optimal design scenario, but in some cases, may be a structure using a cylinder and a jig, and a structure in which a vacuum bed is attached to the welding jig 11. Do. In either case, those skilled in the art can adopt the most efficient structure in consideration of manufacturability, cost and precision.

In addition, the welding part 30 according to the present invention includes a welding torch 31 for integrally welding both ends of the thin plate 1 to the belt B on the upper portion of the pressure plate 21. The welding part 30 is provided with the welding torch 31 which ejects the plasma arc which welds integrally so that the both ends 1a and 1b of the thin plate 1 may be joined and belted, as shown in FIG. .

The welding torch 31 is a torch using plasma welding, and includes a tungsten electrode and an orifice capable of withstanding high heat on a body. That is, when an arc is generated between the electrode and the orifice, when the compressed gas gas is supplied, an arc (fire column) with ultra high temperature and high density of energy is ejected through the orifice. Both ends 1a and 1b of the thin plate 1 are integrally welded through the arc ejected from the welding torch 31. The arc ejected here is very thin in diameter and relatively long in length, and is stable even at a small current of about 0.1 A, allowing welding of thin plates or thin wires. That is, even if the thickness of the thin plate 1 is at least 0.025mm, welding can be performed with excellent quality, and it can cope with a wide range of materials such as stainless steel, titanium, copper, and mild steel.

At this time, the welding part 30 according to the present invention is a Z-axis actuator 32 for moving the welding torch 31 up and down on both ends of the thin plate 1, and the X-axis actuator 33 for moving left and right mutually Weld automatically by interlocking. The welding part 30 is provided to be integrally welded to join the both ends 1a and 1b of the welding torch 31 thin plate 1 to make the belt B as shown in FIGS. 2 and 3. ) Are provided with Z and X-axis actuators 32 and 33 for precisely moving the ends 1a and 1b of the thin plate 1.

The Z-axis actuator 32 is mounted on the upper portion of the welding portion 30 to move the welding torch 31 up and down, and the X-axis actuator 33 is disposed on one end of the Z-axis actuator 32 and the main body 10. It is mounted on the welding torch 31 to move from side to side. That is, the Z and X axis actuators 32 and 33 are integrally welded by moving the welding torch 31 in an adjacent state to both ends 1a and 1b of the thin plate 1 fixed to the welding jig 11. It plays a role.

The Z and X-axis actuators 32 and 33 operate by numerical control by the controller 15. When the operator inputs a setting value according to the thickness and width (length) of the thin plate 1, As it moves automatically accordingly, it is easy to operate and above all, very precise welding is possible. Since it is moved at the resolution of micro unit like a CNC machine for general milling, the precision is high and welding can be performed with excellent quality under any conditions.

Here, the actuators 32 and 33 of the welding part 30 according to the present invention are provided with either a cylinder using oil or pneumatic pressure or a motor using magnetic force. The actuators 32 and 33 move the welding torch 31 so as to be welded along both ends 1a and 1b of the thin plate 1, and are provided using a cylinder or a motor.

Cylinders perform linear motion by receiving electric signals from solenoid valves using hydraulic pressure or pneumatic pressure. These cylinders have a disadvantage of having a separate compressor for generating oil and pneumatic pressure, but the speed is high and the output is high. It is also possible to attach measuring sensors or inspection equipment. The motor receives the electrical signal and performs the rotational movement by the magnetic force. The motor is inversely proportional to the output and the speed. However, the motor can be moved very precisely by operating the pulse PWM output from the controller 15. There is an advantage. In some cases, one of ordinary skill in the art can apply a variety of things that can produce the best results at an optimum cost in consideration of controllability, driveability, and mounting.

In addition, the welding part 30 according to the present invention further includes Z and Y-axis adjusting holes 35 and 36 to finely adjust the position of the welding torch 31 in micro units on the upper part. The welding torch 31 is provided with Z and X-axis actuators 32 and 33 for moving along both ends 1a and 1b of the thin plate 1 at the top thereof, and the Z-axis actuator 32 and the welding torch ( 31, Z, Y-axis adjustment holes 35, 36 for correcting the position is provided. That is, as shown in FIG. 3, the Z-axis adjuster 35 corrects the position of the welding torch 31 in the vertical direction, and the Y-axis adjuster 36 corrects the position of the welding torch 31 in the front-rear direction. .

Of course, since an encoder or a sensor is mounted on the actuators 32 and 33, it is unlikely that an error is generated according to the position of the welding torch 31, but the welding torch 31 may be deformed by heat in the actual welding process. An error may occur between the actuators 32 and 33. As such, the adjustment holes 35 and 36 allow the operator to individually adjust the precision manually in units of micrometers when an error occurs due to the movement of the welding torch 31.

In addition, the welding unit 30 according to the present invention further includes at least one measuring sensor and inspection equipment to improve weldability at one end of the welding torch 31, the measuring sensor is a laser for measuring beads while tracking the weld line Or use a camera, and only one of the radiation, ultrasound, current, barometric pressure as the inspection equipment. The welding part 30 welds the both ends 1a and 1b of the thin plate 1 integrally by the movement of the welding torch 31 by the actuators 32 and 33. A sensor for measuring and inspecting the welding state in real time. And equipment.

That is, although not shown through separate drawings, one end of the welding torch 31 is provided with a laser sensor for tracking the weld line and a camera sensor to measure the beads by welding, and only any one of radiation, ultrasonic waves, current, and atmospheric pressure. Non-destructive inspection equipment used. These measuring sensors and inspection equipment are connected to the controller 15 to generate a signal for feedback control in real time.

In addition, the discharge portion 40 according to the present invention is provided with a discharge table 45 rotatable by the cylinder 41 to discharge the thin plate (1) belted (B) on the body portion 10 to the outside. . Discharge part 40 is provided with a discharge table 45 rotatable by the cylinder 41 on one side of the body portion 10 as shown in Figures 1 to 3, this discharge table 45 is a welding jig (11) At the same time to support and discharge the belt (B) the thin plate (1).

Discharge table 45 is rotatably mounted by a hinge (H2) in the center of one side of the main body portion 10 as shown in Figure 3, the cylinder 41 connected by a link is connected to the upper end of the welding jig 11 It has a semicircular ring portion to engage with one end. That is, until the both ends 1a and 1b of the thin plate 1 are welded, the discharge base 45 is held in engagement with one end of the welding jig 11 by the cylinder 41, and after welding is completed, The discharge table 45 is rotated by the cylinder 41 to release the ring portion engaged with the welding jig 11 so that the belt B-shaped thin plate 1 is discharged.

This ensures a path through which the thin plate 1 can be seated on the welding jig 11 before welding, but after the welding, the thin plate 1 becomes a belt B so that the welding jig 11 is wrapped. That is, the discharge table 45 secures a closed path to discharge the belt (B) thin plate (1) to the outside. On the other hand, although the discharge table 45 operates by the cylinder 41 by pneumatic pressure, a motor using a magnetic force may be used in addition.

4 to 7 is a state diagram showing the welding process of the welding apparatus according to the present invention.

In operation, first prepare a thin plate (1) of the set material having a length, width, and thickness to meet the specifications and applications to be applied to the conveyor (C) as shown in FIG. Next, one end 1a of the thin plate 1 is seated on a bed provided on the upper part of the welding jig 11 as shown in FIG. 4. At this time, in order to accurately seat on the bed of the welding jig 11 is mounted in a precise position using the gauge (G). Then, the valve of the clamping part 20 is opened to inflate pneumatic pressure into the tube 25 to completely fix one end 1a of the thin plate 1 to the welding jig 11 by rotation of the pressure plate 21 by expansion. Subsequently, as shown in FIG. 5, the other end 1b of the thin plate 1 is fixed in a state where the one end 1a and the other end 1b are engaged with each other by the same process as the one end 1a. At this time, since the one end 1a of the thin plate 1 is fixed to the welding jig 11 at the correct position by the pressure plate 21, the gauge G may be omitted.

Subsequently, when the setting value (material, thickness, width, etc.) of the thin plate 1 is input to the controller 15 as shown in FIG. 6, the actuators 32 and 33 of the welding part 30 automatically operate while the welding torch 31 is operated. The furnace plasma is ejected and welded to form the belt (B). At this time, if the setting value in the controller 15 is a state previously input, this process is omitted. On the other hand, if an error before welding occurs or the error is measured during the welding process, the position of the welding torch 31 is precisely adjusted by using the Z and Y-axis adjusting holes 35 and 36. In addition to welding, real-time analysis is performed through measuring sensors and inspection equipment. Subsequently, as shown in FIG. 7, the cylinder 41 of the discharge part 40 is operated to rotate the discharge table 45 so that the thin plate 1 formed by the welding part 30 is discharged to the outside. That is, until the both ends 1a and 1b of the thin plate 1 are welded, the discharge base 45 is held in engagement with one end of the welding jig 11 by the cylinder 41, and after welding is completed, The discharge table 45 is rotated by the cylinder 41 to release the ring portion engaged with the welding jig 11 so that the belt B-shaped thin plate 1 is discharged.

As such, the present invention can automatically weld both ends of the thin plate through a welding torch moving in the multi-axis direction with a relatively simple operation to improve the overall productivity, according to the conveyor and the application by positioning by the user and numerical control It has the effect of ensuring quality and lifespan by satisfying the specifications required for the belt with compatibility that can be applied to various thin plates and excellent precision to prevent cracks and residual stress.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined by the appended claims. It is therefore intended that such variations and modifications fall within the scope of the appended claims.

1: sheet 10: main body
11: welding jig 15: controller
20: clamping portion 21: pressure plate
25: tube 30: weld
31: welding torch 32, 33: actuator
35, 36: control part 40: discharge part
41: cylinder 45: discharge table
B: Belt C: Conveyor

Claims (4)

In the welding apparatus for joining both ends to make the metal thin plate (1) into the belt (B):
A main body (10) having a welding jig (11) for seating the thin plate (1), and having a controller (15) for inputting and outputting signals in sequence on one side;
A clamping part 20 having at least one pressing plate 21 on the welding jig 11 and having a tube 25 for fixing the thin plate 1 by rotation of the pressing plate 21;
A welding part (30) having a welding torch (31) configured to integrally weld both ends of the thin plate (1) to the belt (B) on an upper portion of the pressing plate (21); And
And a discharge part (40) having a discharge table (45) rotatable by a cylinder (41) to discharge the thin plate (1) belted (B) on the body (10) to the outside. Welding apparatus for ultra-thin metal conveyor belts. The method of claim 1,
The welding part 30 is automatically welded in conjunction with the Z-axis actuator 32 for moving the welding torch 31 up and down and the X-axis actuator 33 for moving left and right on both ends of the thin plate (1). Welding apparatus for ultra-thin metal conveyor belt, characterized in that. The method of claim 1,
The welding portion 30 of the ultra-thin metal conveyor belt further comprises a Z, Y-axis adjusting holes 35, 36 to finely adjust the position of the welding torch 31 in micro units on the top. Welding equipment. The method of claim 1,
The welding part 30 is further provided with one or more measuring sensors and inspection equipment to improve the weldability at one end of the welding torch 31, the measuring sensor using a laser or a camera to measure the bead while tracking the weld line, Welding equipment for the ultra-thin metal conveyor belt, characterized in that using only one of the radiation, ultrasonic waves, current, air pressure as the inspection equipment.

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