KR950003094B1 - Jig welder - Google Patents

Abstract

The device for simplifying the transfer of the welded objects such as a side frame or cross beam of a vehicle body, has a transfer means for selectively rotating or moving the welded objects. The device comprises a stationary frame (30) and a movable frame (30a) controlling the distance between the shafts; support casings (50)(50a) with guide rails (40)(40')(40a)(40a') standing on the frames (30)(30a); vertically movable carriages (60)(60a) combined with a rotary jig (10) for fixing the welded object, moved by the driving sections (80)(80a).

Description

Work device for supporting welded object

1 is a view showing a working device for a workpiece to be welded according to the present invention viewed from the front;

2 is a view showing the working device for a workpiece to be welded according to the present invention as viewed from the side.

Figure 3 is an enlarged perspective view of the carriage and the driving portion of the operation apparatus for supporting the workpiece to be welded according to the present invention.

4 is a partial excerpt of the safety device attached to the welding object support work device according to the present invention, and the fourth (a) is a perspective view showing the safety device part from the front, and FIG. Sectional drawing along the II line direction of FIG. 4 (a).

5 is an enlarged perspective view showing only a part of another safety means employed in the device according to the present invention.

6 is a block diagram schematically showing the entire drive system applied to the apparatus according to the present invention.

* Explanation of symbols for main parts of the drawings

1: Work apparatus for supporting welded object 10: Jig for fixing welded object

20: fixed work device 20a: movable work device

50, 50a: left and right support casing 54, 54a: electric chain

60, 60a: left and right upper and lower carriage 80, 80a: carriage drive unit

100: safety device 102: pin

106: jam piece 108: jam

110: locking shaft 116: spring

120: pressing bar 202: brake pulley

204: hydraulic piston 208: brake pad

The present invention can be easily heated while converting the welded parts of the vehicle structure, such as side frames, cross beams, etc., to be welded to an arbitrary position, so that the welded object can be selectively rotated or moved up and down. A work device for supporting a workpiece having a means.

The work device, which is configured to perform a welding operation by fixing and supporting an existing welded object, has a drawback in that its work efficiency is significantly lowered due to a structure having only a rotary jig.

The welded object of the vehicle (for example, TRUCK FRAME, etc.) has a large radius of rotation because of its large size.

Therefore, since the rotary jig means on the work table is determined according to the radius of rotation of the workpiece to be welded, its attachment position is generally located at a very high position.

Because of this, heavy welded objects are not difficult and uncomfortable in a rotary jig located at a high place. Therefore, unnecessary effort is consumed.

In addition, due to the excessive rotation radius of the welded object is relatively high to the welded portion is difficult to perform the welding operation.

These reasons are a factor that significantly reduces the work efficiency when using a conventional work tool.

The present invention has been invented to solve the above-described drawbacks, and provides an advantage that the jig for supporting a welded object can be moved up and down as well as easy to set the welded object.

In addition, it is possible to convert the welded portion of the welded object to an arbitrary position, thereby providing an advantage that the welding operation can be always performed in the downward position.

In addition, it provides an advantage that can be arbitrarily adjusted the distance between the axis of the working device according to the size of the welded object.

In addition, by providing a safety device to the workpiece to be welded to provide an advantage that allows the operator to always work safely.

It also provides the advantage of facilitating the automation of the system by allowing all drive means to be controlled by the control unit.

That is, the present invention is a means for achieving the above object, in the working device for a workpiece to be welded equipped with a rotating jig, the fixed base and the movable table having a certain distance so as to be able to adjust the axis in accordance with the size of the welded object; ; Left and right support casings in which the fixing stand and the movable stand are upright, and a pair of guide rails are provided on both sides of the front surface; It is attached to the support casing up and down movable guide along the guide rail by a drive unit installed on the upper part of the support casing, and consists of a left, right, up and down moving carriage which is integrally mounted with a rotating jig for supporting a workpiece. The welded part to be welded to the jig is rotated by the forward / reverse drive motor and moved up and down by the carriage, so that the welded part of the welded part can be welded at all times.

In addition, the working device has a locking shaft having a long hook installed in the center of the front wall over the entire length of the support casing, and the upper and lower movable carriage body in response to the latch is pinched by the rotatable pin pin and the outer side at the bottom The locking body having a locking end inclined by the end and an elastic force to move the locking side toward the locking side are positioned so as to be movable through a spring inside the support body attached to the carriage integrally, and the head is located at the bottom rear side of the locking piece. It is proposed to further include a safety device made of a contact push bar.

Further, the work device has a pull pad provided at one end of the jig rotation shaft on the movable table to prevent jig rotation during operation, and is in contact with the outer circumferential surface of the pulley so as to be integrally connected with a pad having a hemispherical surface. It is proposed to further include installing another safety means of the hydraulic piston.

The above objects and other advantages will become more apparent from the embodiments according to the accompanying drawings.

The present invention is in no way limited by the following examples.

1 is a front view showing the overall configuration of the work device 1 for working object to be welded according to the present invention, and FIGS. 2 to 6 show only the main components of the present invention. As shown in FIG. 1, as shown in FIG. 1, the to-be-welded object shown in FIG. 1 is made into the fixed work device part 20 and the movable work device part 20a which have a fixed distance so that adjustment of a shaft is possible according to the magnitude | size. Is done.

The stationary stand 30 of the stationary work unit 20 is fixed to the bottom of the workplace, while the movable table 30a of the movable work unit 20a is installed at the bottom of the rail 32a. It is configured to be movable in the axial direction via the guide wheel 34a on the top.

This is to make the work device variable, so that it can be used to support the work of any size to be welded.

The left and right support casings 50 and 50a, each of which is a quadrilateral body, are integrally formed with the fixing table 30 and the movable table 30a on the fixing table 30 and the movable table 30a. (FIGS. 1 and 2). A pair of guide rails 40, 40 ', 40a, 40a' are provided at both corners of the front wall of the left and right support casings 50 and 50a over the entire length of the casing (first). 1 degree and 3 degree).

In addition, the left and right upper and lower movable cages 60 and 60a in the shape of chairs are viewed from below the front wall of the left and right support casings 50 and 50a. 50a) are attached to be movable up and down (FIG. 1).

The up and down moving cages 60 and 60a are provided with guide pairs 42, 42 'and 42a and 42a', respectively, on the upper and lower sides of the guide rails 40 and 40, respectively. 40a and 40a, the upper and lower moving carriages 60 and 60a allow the drive unit described later to guide the support casings 50 and 50a along the guide rails. It is reciprocated toward the upper and lower chambers.

The left and right moving carriages 60 and 60a are integrally attached to the to-be-supported jig 10 which is rotated by the driving motor M1 so as to be movable up and down with the carriage. (Figure 1).

As shown in FIG. 1, the jig 10 has a driving jig part 10a which is directly connected to the rotary shaft of the motor M1 via the clutch 12, and the driving jig part 10a and the pin. It consists of the driven jig part 10b connected via the support body S for welding materials (FIG. 1). The driving jig part 10a is integrally axially supported by the left upper and lower moving carriages 60, and the driven jig part 10b is integrally axially supported by the right upper and lower moving jig parts 10b.

Carriage drive units 80 and 80a, which are means for moving the upper and lower carriages 60 and 60a up and down, are respectively installed on the upper left and right support casings 50 and 50a.

Since both sides of the drive unit 80 and 80a are the same, only one side (left side) will be described as an example.

As shown in FIGS. 1 and 3, the carriage drive unit 80 is connected to a forward / reverse drive motor M2 and a reduction gear rotatably connected to the drive motor M2 via an electric belt V. 82, the rotation shaft 86 which is axially supported by the bearing 85 via the drive gears 84 to the reduction gear 82, and integrally attached to the rotation shaft 86 so that it may rotate with the rotation shaft 86 A pair of flywheels 88 and a flywheel 88 are provided so as to be electrically movable so that one side is connected to the moving carriages 60 and 60a, and the other side is located inside the support casing 50. It consists of a rolling chain 54 connected to the weight 52 of the display. The flywheel 88 is installed in two sets before and after.

The flywheel 88 installed at the rear side is installed for auxiliary to give reinforcement to the electric chain (54).

In addition, the weight 52 shown in FIG. 2 is installed to maintain balance between the up and down moving carriages 60 and 60a on both sides, and the weight of the weight 52 is determined by the weight of the carriage. It can be arbitrarily adjusted according to the weight to the to-be-welded object attached to a jig.

When the transmission chains 54 and 54a connected to the carriages on both sides of the up and down moving carriages 60 and 60a are disconnected from the heavy material (welded object) supported by the jig 10 of the carriage and disconnected, Safety devices (100) (100a) are provided for suppressing the sudden fall of both upper and lower moving carriages (60) and (60a) located in the upper casing. Since the safety device is also the same in both structures, as shown in FIG. 1, only the safety device 100 installed in the left upper and lower moving carriage 60 will be described as an example. As shown in FIGS. 1, 3, and 4, the carriage fall preventing safety device 100 is installed at the upper center of the upper and lower moving carriages 60 on the left side, and the safety device 100 includes the carriage ( 60 is installed to be rotatable by pin 102 in the upper center and the electric chain 54 is connected to the upper end, the engaging piece 106 formed with an inclined locking end 104 at the lower end, and the engaging piece ( The catching shaft 104 which catches the catching | hanging part 104 of 106, and has the catching tooth 108 installed long in the longitudinal direction of the center of the front wall part of the support casing 50 of the position corresponding to the catching piece 106 ( 110 and a state in which it is supported by the spring 116 in the support cylinder 114 installed integrally with the up and down moving carriage 60 so that the head 118 is the rear side of the locking piece 106. It consists of the press bar body 120 which is in contact with the edge part. Since the tension acting on the engaging piece 106 connected to the transmission chain 54 is greater than the elasticity of the spring 116, the pressing rod body 120 is normally pressed by the engaging piece 106. That is, since the weight 52 is provided in the transmission chain 54 as shown in FIG. 2, the engaging piece 106 connected to the transmission chain 54 is caught on the rear side with the pin 102 as the center. Since the tension (especially the lower portion) is applied, the pressing rod body 120 is in a contracted state by the tension at that time. Therefore, the locking end portion 104 of the locking piece is not normally caught by the locking portion 108 and does not affect the up and down operation of the carriage at all.

In addition, another safety device 200 shown in FIG. 5 is installed as shown in FIGS. 1 and 2 to prevent the jig 10 from rotating during operation.

That is, the pulley 202 which is integrally rotated with the shaft 14a is attached to the end of the rotating shaft 14a of the driven jig part 10b, and the up and down moving carriages on the right adjacent to the upper part of the pulley 202 are attached. The hydraulic piston 204 is attached to the body, and the rod 206 of the hydraulic piston 204 is integrally provided with a pulley rotation inhibiting brake pad 208 to constitute the safety device 200. The brake pad 208 presses the pulley 202 by the action of the piston 204, thereby taking safety means to prevent the jig 10 from rotating during operation.

In addition, the driving motors M1, M2, M2 'and the hydraulic piston 204 are connected to a control unit so as to be operated by a button on the control unit.

The effect of the present invention by such a configuration is as follows. In the work device 1 for supporting a workpiece to be welded according to the present invention, as shown in FIG. 1, the jig 10 is fixed and movable to the left and right support casings 50 of the work device parts 20 and 20a. It is in the state located at the bottom of 50a.

Moreover, the support S for fixation of the to-be-welded object is previously provided over the driving jig part 10a and the driven jig part 10b of the jig 10. As shown in FIG. The support S for fixing the to-be-welded object is fixed by being bitten by the fixing chucks 16 and 16a of both sides in the jig 10.

With respect to the fixed work device 20 shown in FIG. 1, by moving the movable table 30a in the axial direction along the rail 32a along the rail 32a according to the size of the workpiece to be fixed to the jig 10. The distance between shafts of the movable work device 20a can be adjusted.

The vehicle structure to be welded is fixed to the support S of the jig 10 adjusted as described above.

When the setting of the object to be welded to the jig 10 is completed, the welding operation is immediately performed on the welding portion of the predetermined surface portion of the object to be welded by a welding device not shown.

When welding the welding part on the back part is completed after the welding work on the surface part of the welded part, the worker can enter and weld under the welded part, but it is very difficult and efficient because the welding work must be done in the upper posture. Falls. At this time, it is preferable to rotate the jig 10 by driving the motor M1 so that the bottom portion of the object to be welded is positioned upward. However, as shown in FIG. 1, the jig 10 supports the object to be welded. When located at the bottom of the device (1), due to the excessive radius of rotation of the welded object attached to the jig 10, the welded object comes in contact with the floor of the workplace when the jig 10 is rotated.

At this time, the upper and lower movable carriages 60 and 60a of the left and right sides, in which the driving jig part 10a and the driven jig part 10b constituting the jig 10 are integrally attached, are supported by the support casing 50 ( Positioning above 50a) is highly desirable.

The height position of the up and down moving carriages 60 and 60a for moving the jig 10 upward is determined according to the size of the radius of rotation of the welded object.

That is, in order to move from the position of the jig 10 shown in FIG. 1 to the upper side of the left and right support casings 50 and 50a, the left and right support casings are first connected to the control unit as shown in FIG. The carriage driving units 80 and 80a located above the 50 and 50a are driven.

When the operation buttons (not shown) of the drive motors M1 and M2 in the control unit shown in FIG. 6 are pressed, the drive motors M1 and M2 are simultaneously driven.

As shown in FIG. 3 by only one side driving unit 80 as an example, when the driving motor M1 is driven, the reduction gear 82 is operated via the electric belt V, and the driving force of the reduction gear 82 is Since it is transmitted to the rotary shaft 86 and the flywheel 88 axially supported by the bearing 85 via the drive gear 84 to rotate in the direction of the arrow, the carriage 60 and the weight over the flywheel 88 As for the electric chain 54 connected to the weight 52, the flywheel 88 raises the carriage 60 to the arrow direction of FIG. 3 by a driving force. In this case, the carriage 60 is moved upward by riding the guide rails 40 and 40 'through the guide rollers 42 and 42', as shown in FIGS. 1 and 3. The weight shaft 52 maintains a balance at all times because the weight shaft 52 forms a weight when it rises with the average weight of the welded object fixed to the jig 10.

In the above embodiment, because the operation of the carriage drive unit 80 (80a) is the same, only one side has been described as an example, but since both side drive unit 80 (80a) acts simultaneously based on the process as in the embodiment, The jig 10 which was in the solid line position of 1 degree display is moved to the upper virtual line position. When the carriages 60 and 60a reach the desired positions, the buttons on the control unit may be stopped by turning them off, and the carriages to which the jig 10 is integrally attached may be temporarily or gradually moved gradually. This can be accomplished by a button on the control. This circuit configuration can be employed in various ways, and the present invention will not be described by taking only a specific circuit as an example.

When the jig 10 is positioned at the first virtual line display, when the button is operated to rotate the drive motor M1 on the drive jig part 10a side of the jig 10 by the controller, the drive motor M1 is rotated. Rotates, and the rotational force of the driving motor M1 is transmitted to the driving jig part 10a side via the clutch 12 shown in FIG. 1, and the rotational force of the driving jig part 10a side again causes the to-be-welded object. It is transmitted to the rotating shaft 14 of the driven jig part 10b via the supported support S, and the jig 10 is rotated and the lower part of a to-be-welded object is located upwards. The stop of the drive motor M1 is achieved by button operation in the control section. In addition, it is possible to selectively rotate the driving motor M1 little by little by the button operation or to rotate one turn at a time.

This circuit configuration adopts a standard one, and the description thereof is particularly limited and will not be described.

When the bottom part of the to-be-welded object is reversed upward, the welding part of a to-be-welded object may be welded in the position of the virtual line of FIG. When the carriage is lowered after the welding operation is completed, the driving motors M2 and M2 'may be driven in the reverse direction by the button operation of the controller. The operating sequence of the drive unit is reversed from that of ascending.

On the other hand, when welding the heavy object at the position of the virtual line of FIG. 1, when one or both of the vibrating chains 54 and 54a connecting the carriage are cut off by the load of the heavy object, the carriage falls. The safety device 100 (100a) shown in FIG. 3 and FIG. 4 is operated. Since both sides are the same, only one side will be described as an example.

Since the locking piece 106 of the safety device 100 is connected to the transmission chain 54 on which the weight 52 rests, a strong tension is applied to the locking piece 106 held by the pin 102 on the carriage body. Due to this tension, the lower end portion of the engaging piece 106 cannot be pulled by the spring 116 at any time due to the tension of the pin 102 as the point and always facing backward in FIG. 4 (b). It is in a contracted state.

In this state, if any one of the transmission chains 54 or one side is broken, the tension acting on the locking piece 106 by the weight 52 is lost. The elastic force of 116 pushes the lower end of the locking piece 106 forward. At this time, the lower end portion of the locking piece 106 is rotated forward by the pin 102 as a point by the spring force, so that the inclined locking end 104 formed at the lower end is connected to any latch 108 of the locking shaft 110. Meshing (Fig. 4 (b)).

Therefore, it prevents the fall of the carriage 60 to which the jig 10 to which the heavy object is fixed is integrally attached. This is done instantaneously with the cutting of the electric chain, thereby protecting the workers working below.

In addition, the safety jig 10 is provided to prevent the jig 10 from being rotated during the operation. As shown in FIG. 1, FIG. 2, and FIG. 5, the hydraulic piston 204 attached to the brake pad 208 is attached to the body of any one carriage 60a by the control part. The pad 208 in the rod 206 extending by acting as a single body is integrated with the rotation shaft 14a of the driven jig part 10b to press the periphery of the pulley 202 located at the end, so that the motor The jig 10 is not rotated due to the failure of M1 or other unexpected work.

When the welding operation is finished, the hydraulic piston 204 may release the button operation on the control unit.

The drive motors (M1), (M2), (M2 ') is a motor that can be reversed and reversed, and the drive motor and the hydraulic piston are connected to the control unit to control in one place, but these control circuit configurations are various methods Since only a specific circuit is described as an example, the description is omitted.

As described above, according to the present invention, in fixing the to-be-welded object to the jig, the jig can be moved up and down by the carriage, so that a heavy object to be welded can be easily set on the jig. By enabling up and down, the welding part of the welded object fixed to the jig can be welded at all times from the bottom view posture, and the safety device is adopted for the jig and jig movement carriage. It has the effect of protecting them from safety accidents.

Claims (8)

A work device for a workpiece to be welded provided with a rotating jig, comprising: a stator 30 and a movable table 30a installed so as to be able to adjust an axis therebetween, and are erected from the stator and movable table. Left and right support casings 50 and 50a on which the rails 40, 40 ', 40a and 40a' are installed, and up and down by the drive units 80 and 80a to the support casings. Work piece for supporting the welded object consisting of a left, right, up, down moving carriage (60, 60a) is attached to the skin jig for fixing the skin contact fixing jig 10 integrally. According to claim 1, wherein the drive unit 80, 80a is installed on the upper support casing on both sides, the forward and reverse drive motor (M2) (M2 '), the drive motor and the electric belt (V) (V' ) Is coupled to the reducer 82, 82a, the flywheel 88, 88a axially connected via the drive gears 84, 84a to the reducer, and coupled to the flywheel, one side of which is an up and down moving carriage It is connected with, the other side is a working apparatus for supporting the welded object consisting of a transmission chain 54, 54a connected to the weight (52) (52a). According to claim 1, wherein the locking shaft (110) (110a) having a locking teeth (108, 108a) long attached to the center of the front wall portion of the left and right support casings (50, 50a), The locking piece 106 and 106a having a locking end 104 and 104a at a lower end of the upper and lower moving carriage body are rotatable with pins 102 and 102a, and the body is integrally attached to the carriage. It is positioned so as to be able to move forwards and backwards through the springs 116 and 116a in the support cylinders 114 and 114a, and the head parts 118 and 118a are in contact with the bottom rear side of the locking piece. Work device for the workpiece to be welded, characterized in that it further comprises a safety device (100) (100a) of (120) (120a). 2. The rotation inhibiting pad 208 according to claim 1, wherein a pulley 202 provided at the end of the jig rotation shaft 14a and a hemisphere 210 are formed in close contact with the outer circumferential surface of the pulley. Workpiece support for welded object, characterized in that it further comprises another safety device (200) installed in the carriage body consisting of a hydraulic piston (204) having a). 3. The welding device supporting work device according to claim 2, wherein the fly wheels (88) are installed in two pairs before and after. 3. The rolling chain (54) (54a) is attached to the upper end of the engaging piece (106) (106a) attached to the upper and lower moving carriages of the left and right, and the hanging piece has a weight weight suspended on the rolling chain. (52) (52a) The working device for the workpiece to be welded, characterized in that the tension applied to the engaging piece is applied to overcome the spring resistance of the press-fit rod body. The movable table (30a) is configured to move forward and backward along the guide rail (32a) provided in the axial direction via the guide wheel (34a), the movable table according to the size of the welded object Working device for the workpiece to be welded, characterized in that to enable the adjustment between the shaft. 4. The work piece to be welded support device according to claim 3, wherein the safety device (100) is installed on both the left and right carriages.