JP7298883B2 - Welding equipment for rod-shaped members - Google Patents

Description

The present invention relates to a welding device for joining other members to both ends of a hollow or solid bar member.

Conventionally, as a welding device, for example, a welding rod guiding pipe for guiding a welding rod is fixed on a substrate by means of a fixture consisting of a band and a bolt, and a series of welding rods is attached to the tip of the welding rod guiding pipe by the same fixture. The nozzle and the welding rod guide pipe form a welding rod guide path, and in front of the nozzle, a pair of nozzles contact the outer peripheral surface of the welding rod and send out the welding rod. is provided, and welding is performed by a torch positioned at the tip of the welding rod finally fed out.

Japanese Utility Model No. 63-101177

In short, the welding machine described in the preceding paragraph positions a torch at the tip of a welding rod sent out through a welding rod guide path, and performs welding work at that portion. When welding a member, two welding operations are required to weld other members to both ends of the rod-shaped member. There is a problem that the synchronous rotation of the rod-like member for welding and other members is very difficult.

SUMMARY OF THE INVENTION An object of the present invention is to provide a welding apparatus capable of welding other members to both ends of a bar member simply and accurately.

According to a first aspect of the present invention, there is provided a welding apparatus for joining another member to one end or both ends of a rod-shaped member, comprising left and right welding stations provided on a base and a rod-shaped member between these welding stations. and a welding machine for welding another member to one end or both ends of the bar member. One of the left and right welding stations is a fixed welding station, and the other is the fixed welding station. Both welding stations are provided with a member holding portion for holding the other member facing the end portion of the rod-shaped member, and a member holding portion attached to the tip. and the rod-like member are driven to rotate synchronously. are sandwiched between the rod-shaped member and another member by the driving rotary shaft portion, and these members can be joined by the welding machine while the rod-shaped member and another member are synchronously rotated by the drive rotation shaft portion, and the member holding portion is held by the rod-shaped member from the side wall of both welding stations. A bracket protruding toward the end of a member, an engaging jig provided at the tip of the bracket and having a plate-shaped projecting portion that engages with another member, and another member on the engaging jig at a predetermined level. It is a welding device for a rod-shaped member having a wedge member to be set .

According to a second aspect of the present invention, the welding apparatus for rod-like members according to the first aspect is provided with detecting means for detecting the height level of another member.

According to a third aspect of the present invention, the welding apparatus for a rod-shaped member according to the first or second aspect is provided with detection means for detecting the height level of the rod-shaped member.

According to a fourth aspect of the present invention, there is provided a welding apparatus for a rod-shaped member according to any one of the first to third aspects, further comprising detecting means for detecting the rotating state of the drive rotating shaft portion. There is.

The present invention according to claim 5 is the welding apparatus according to any one of claims 1 to 4 , wherein a pair of left and right welders are provided behind the base, and the torch of one of the welders is A pair of left and right hangers are provided at a fixed welding station, and the torch of the other welding machine is provided at a moving welding station, and run on rails of a substantially rectangular frame-shaped frame body erected behind the base. It is characterized in that the wires of the left and right welding machines are arranged to move freely corresponding to the position of the torch.

According to a sixth aspect of the present invention, there is provided a method for welding rod-shaped members using the welding apparatus according to the first aspect, wherein another member is set on one or the other of the member holding portions of the pair of left and right welding stations. setting the rod-shaped member on the rod-shaped member supporting portion; and operating the cylinder C1 in the movable welding station 3 to move the movable welding station 3 toward the fixed welding station 4 to move one end or both ends of the rod-shaped member. and setting another member on the drive shaft, and welding the two members with a welding machine while synchronously rotating the rod-shaped member and the other member at one end or both ends thereof by the drive rotation shaft. Welding method.

According to the welding apparatus according to the present invention, as described above, the rod-shaped member is set on the rod-shaped member supporting portion provided between the pair of left and right welding stations on the base, and the member holding portions provided on both the stations. set the members to be welded on one or both of the rod-shaped members, and bring the movable welding station closer to the fixed welding station to engage the members to be welded with one end or both ends of the rod-shaped member, thereby synchronizing these members Since welding of both members can be automatically performed by rotating the member, it is no longer necessary to weld each end of the rod-like member as in the conventional art, and work efficiency can be improved. In addition, as described above, since the actual welding work can be performed mechanically, the problems of non-uniformity and skill of the workers that occur in conventional manual welding can be solved at once.

In addition, since the structure of each part of the welding device according to the present invention is not complicated, the overall structure is not complicated, so that it is easy to manufacture and is advantageous in terms of cost.

1 is a front view of a welding device according to an embodiment of the present invention; FIG. It is a top view of the welding apparatus of the same embodiment. It is a side view of the welding machine part in the apparatus of the same embodiment. It is a side view of the mobile welding station in the apparatus of the same embodiment. It is an enlarged front view which shows the member holding|maintenance part at the side of the fixed welding station in the apparatus of the same embodiment. FIG. 6 is an enlarged front view similar to FIG. 5 of the member holding portion on the stationary welding station side, showing a state after welding is completed; It is a top view of a member holding|maintenance part similarly. It is similarly a bottom view of a member holding part. It is a side view of the pipe clamp part in the apparatus of the same embodiment. FIG. 4 is a front view showing a state before the hook of the moving-side welding station is engaged with the left end of the pipe in the apparatus of the same embodiment; FIG. 10 is a front view showing the apparatus of the same embodiment after the hook of the moving-side welding station is engaged with the left end of the pipe;

Next, an embodiment in which the present invention is applied to a welding apparatus for manufacturing a scaffolding member in which hooks as other members are welded to both ends of a pipe as a rod-shaped member will be described with reference to the drawings. The invention is not limited to such embodiments.

In the embodiment according to the present invention, "front and rear", "left and right" and "up and down" are based on FIG. ” refers to the back side of the figure. Moreover, the "left side" means the left direction in FIG. 1, and the "right side" means the right direction in the same figure. Further, "upper" means the upward direction in FIG. 1, and "lower" means the downward direction in the same figure.

As shown in FIGS. 1 and 2, the welding device 1 according to the present embodiment automatically welds U-shaped hooks H to both ends of the pipe P. Left and right welding stations 3 and 4, a pipe clamp portion 54 as a pipe support portion for rotatably clamping the pipe P between the welding stations 3 and 4, and a hook H for welding the hooks H to both ends of the pipe P, respectively. A pair of left and right welding machines W are provided.

In the welding apparatus 1, of the left and right welding stations 3 and 4, the right side is a fixed welding station 3, and the left side is a movable welding station that can be freely approached to the fixed welding station 3 by a moving cylinder C1. 4, both welding stations 3 and 4 are provided with member holding portions 7A and 7B for holding the hooks H facing the ends of the pipes P, and member holding portions 7A and 7B at their tips. It has left and right driving rotary shafts 16A and 16B for synchronously rotating the pipe P. As shown in FIG.

That is, the welding apparatus 1 brings the movable welding station 4 closer to the stationary welding station 3, and the pipe P is sandwiched between the welding stations 3, 4, and the hooks H are attached to both ends of the pipe P. In the abutted state, the pipe P and the hook H are synchronously rotated by the driving rotary shafts 16A and 16B and the pair of left and right welding machines W, and these members P and H are automatically joined together. Note that the hook H may be welded to only one end of the pipe P. In short, the hook H may be welded to both ends of the pipe P or to either one of the left and right ends.

More specifically, in the welding device 1, a rail 5 is laid on a base 2, and a pair of left and right wheels are vertically provided below a base 4b on which a chamber 4a of the welding station 4 on the moving side is installed. 6 Therefore, the movable welding station 4 can be manually or electrically moved in the direction of the fixed welding station 3 on the right side via the moving cylinder C1. The moving cylinder C1 is installed on the base 4b of the base 2, and has a structure in which the base 4b and the moving welding station 4 move in the left-right direction by extending and contracting the rod.

Further, the position of the base 4b is determined by the fitting position between the pin holes RH provided at regular intervals on the side surface of the rail 5 and the pin 56 at the tip that can be protruded by operating the lever 55, and is fixed at that position. It will be done.

Further, as shown in FIGS. 2 and 4, the drive shafts 16A and 16B are synchronously driven by adjacent electric motors 15A and 15B and belts B in the chambers 3a and 4a of the left and right welding stations 3 and 4. rotate to

Shield discs 12A and 12B are attached to the left and right drive rotary shafts 16A and 16B to prevent welding sparks from scattering toward the left and right welding stations 3 and 4. A rotation sensor mechanism (not shown) is incorporated in the plates 12A and 12B, and the rotation sensor mechanism detects the rotation of the shielding discs 12A and 12B, that is, the rotation positions of the drive rotation shafts 16A and 16B. is appropriately detected.

In addition, as shown in FIGS. 2 and 3, an equipment station 18 having a pair of left and right commercially available CO2/MAG welders W installed is provided behind the base 2. The equipment station 18 is an overall is a stand shape, a power supply 19 for the welding machine W is installed on the lower stand table 18a, a wire feeder 21 is installed on the upper stand table 18b, and cables 23 and 24 are connected to the final wire. The welding is basically performed by the left and right torches 22 .

In addition, 45 in the figure indicates a pack wire, and a CO2 tank (not shown) is arranged in the vicinity thereof.

In addition, on the rear surface 2a of the base 2 of the welding device 1, a frame body F which is L-shaped when viewed from the side and has the shape of a square frame when viewed from the front is erected, and a rail is formed on the upper portion thereof. A hanger 40 having a pulley 41 and a ring-shaped member 42, which will be described later, is attached to R so as to be movable in the left-right direction. That is, a pair of left and right pulleys 41 of a hanger 40 are fitted to the rail R, and the cables 23 and 24 are inserted through a ring-shaped member 42 vertically provided on the pulleys 41. is movable in the horizontal direction by the hanger 40, and the torch 22 is set on a torch bracket 46 erected on the base 4b. Also, the position of the torch is adjusted by the cylinder C5.

As shown in FIGS. 1 and 5 to 8, member holding portions 7A and 7B include brackets 9 protruding from side walls of chambers 3a and 4a of both stations 3 and 4 toward the ends of pipes P, and brackets 9. An engaging jig 14 having a plate-shaped projecting portion 10 provided at the tip thereof and engaging with the hook H, and a wedge member 13 for setting the hook H on the engaging jig 14 at a predetermined level. In the present embodiment, the hook H is engaged with the plate-shaped projecting portion 10 having a substantially trapezoidal tip in the engaging jig 14, and the deformed rectangular hole 10 is formed in the plate-shaped projecting portion 10. The hook H is fixed to the member holding portions 7A and 7B by driving the wedge 13 from above into the hook H, and by the positioning action at that time, the hook H is positioned to face the end of the pipe P at an appropriate level.

Above the wedge member 13, terminal members (inspection jigs) 8A and 8B are arranged for checking the height position of the wedge member. The arm 49 moves vertically as it moves up and down by the cylinder C2, and its vertical position is sensed by a vertical position sensor (not shown) provided on the outer periphery of the cylinder C2. It rotates (swings) by a predetermined angle in the horizontal direction with the shaft portion 49a as a viewpoint. Therefore, the arm 49 moves vertically and rotates horizontally.

As shown in FIG. 9, the pipe clamp portion 54 includes a support plate 51 erected on the base 2, a pair of front and rear bearings 17 rotatably provided on the support plate 51, and a A roller 28 is provided to press the supported pipe P from above. The pipe P is pressed from above or released by the expansion and contraction of the rod BR accompanying the operation of the cylinder C3. The clamping mechanism for the pipe P described above is the same on both the stationary welding station 3 side and the moving welding station 4 side. Further, for the cylinder C3, the pressing state of the roller 28 is detected by detecting the expansion and contraction state of the rod BR with a sensor (not shown).

Next, an example of the method of using the welding device 1 according to this embodiment will be described. A pipe P is set in the pipe clamp portion 54 . Thereafter, in this embodiment, the operator manually moves the movable welding station 3 to the fixed welding station 4 side, operates the lever 55 to insert the pin 56 into the pin hole RH of the rail 5, and then the base 4a. is fixed, and then the cylinder C1 is operated to move the moving welding station 3 toward the fixed welding station 4 side (rightward direction), thereby fitting the hooks H to both ends of the pipe P, and then each The motors 15A and 15B are operated to rotate the drive rotary shafts 16A and 16B in the stations 3 and 4, and the pipe P is also rotated integrally in synchronization with this. The torches 22 of a pair of welding machines W are used to weld the pipe P and the hooks H at both ends thereof. After the welding operation is completed, the movable welding station 4 is moved in the direction opposite to the fixed welding station 3 (to the left) to release the grip of the pipe P by the pipe clamp portion 54, and the hook H is moved to the welded pipe. P is taken out.

In the present embodiment, the hooks H as other members are welded to both ends of the pipe P as a rod-shaped member, but in the present invention, the hooks H ( other members) may be welded. In that case, the pipe P is gripped by the pipe clamp portion 54 as a support portion of the pipe P, and the left and right welding stations 3.4 are not brought close to each other as described above. are engaged and fixed for welding.

INDUSTRIAL APPLICABILITY As described above, the welding apparatus of the present invention can mechanically weld other members to both ends of a rod-shaped member simply and reliably with a simple overall structure, and is therefore widely used in the field of welding. I can expect it.

REFERENCE SIGNS LIST 1 welding device 2 base 3 fixed welding station 4 movable welding station 5 rail 6 wheel 7A/7B member holding portion 8A/8B terminal member 13 wedge member 14 engaging jig 54 pipe clamp portion W welding machine P pipe H hook

Claims (6)

A welding device for joining another member to one end or both ends of a rod-shaped member, comprising left and right welding stations provided on a base, a rod-shaped member support section supporting the rod-shaped member between these welding stations, A welding machine is provided for welding another member to one end or both ends of the bar member, and one of the left and right welding stations is a stationary welding station, and the other is a mobile station accessible to the stationary welding station. a welding station, in which a member holding portion for holding the other member facing the end portion of the rod-shaped member and a member holding portion are attached to the distal ends of the two welding stations to synchronously rotate the other member and the rod-shaped member; A movable welding station is brought close to a fixed welding station, and a rod-shaped member and other members engaged with both ends thereof are sandwiched between the stations, and the driving rotation is performed. A bracket in which a rod-shaped member and another member can be joined together by the welding machine while the rod-shaped member and another member are synchronously rotated by the shaft portion, and the member holding portion protrudes from the side wall of both welding stations toward the end portion side of the rod-shaped member. and a rod-shaped member having an engagement jig provided at the tip of the bracket and having a plate-like projection that engages with another member, and a wedge member for setting the other member on the engagement jig at a predetermined level. welding equipment. 2. The welding device for bar members according to claim 1, further comprising detecting means for detecting height levels of other members. 3. The welding device for a bar member according to claim 1, further comprising detecting means for detecting a height level of the bar member. 4. The welding device for rod-shaped members according to claim 1, further comprising detecting means for detecting a rotating state of the drive rotating shaft. A pair of left and right welding machines are installed behind the base, the torch of one welding machine is installed at the fixed welding station, and the torch of the other welding machine is installed at the movable welding station, standing behind the base. The wires of the left and right welding machines are movable corresponding to the position of the torch through a pair of left and right hangers running on the rails of the substantially square frame-shaped frame body. The welding device for rod-shaped members according to claim 4 . 2. A method of welding rod-shaped members using the welding apparatus according to claim 1, comprising the steps of: setting another member to one or the other of the member holding portions in a pair of left and right welding stations; A step of setting a member, and a step of operating the cylinder C1 in the movable welding station 3 to move the movable welding station 3 toward the fixed welding station 4 and setting another member on one end or both ends of the rod-shaped member. and welding the rod-shaped member and the other member at one end or both ends thereof by a welding machine while synchronously rotating the rod-shaped member and the other member at one or both ends thereof by means of a drive rotary shaft.

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