JP3756290B2 - Electric resistance welding equipment - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
In the present invention, a vibration type parts feeder, a transformer, an electric controller, and the like are accommodated in a vertically long box, and both electrodes are arranged on the front side of the box and supply parts between the electrodes. The present invention relates to an electric resistance welding machine of a type in which a supply device is installed.
[0002]
[Prior art]
As described above, a vibration type parts feeder, a transformer, an electric controller, and the like are accommodated in a vertically long box, both electrodes are arranged on the front surface side, and a parts supply device that supplies parts toward the front is installed. This is disclosed in Japanese Utility Model Laid-Open No. 63-16581, name “Spot Welder”.
[0003]
The parts feeder disclosed here is placed at the bottom of the box, and a transformer is arranged on the upper side.
[0004]
[Problems to be solved by the invention]
In the case of the above-described type, when performing maintenance of the parts feeder, it is necessary to remove only the parts feeder from a narrow portion below the box, which is very inconvenient to maintain the parts feeder. Particularly, since the base plate on which the parts feeder is placed is directly fixed to the inner surface of the box, such a problem of maintainability occurs. Further, in order to replenish parts to the parts feeder, since the parts feeder is at the lowest position, a replenishment hopper must be provided outside the box, and the uniting as a welding apparatus becomes worse. Furthermore, when the parts feeder is at the lowest position, it is necessary to use a large amount of high-pressure air in order to reach the parts supply device at a higher level, which is disadvantageous as an energy problem.
[0005]
[Means for solving the problems and their functions]
The present invention is intended to solve the above-described problems and at the same time improve the maintainability of the transformer. The invention of claim 1 is arranged such that electrodes are arranged on the wall surface of a vertically long box. In the electric resistance welding apparatus in which a part feeder, a transformer, and an electric control device are disposed in the box, the parts feeder is disposed in a space in the box and above the transformer and the electric control device , and the parts The feeder is placed on a mounting plate that can slide between the inside and outside of the box, and a flange for attaching a back cover that covers the entire back surface of the box is provided from the top of the box and a position lower than the mounting plate. It is provided in the area extending to the lower end of the box .
[0006]
Pas Tsufida than was placed on a slidable mounting plate between box and out, by drawing the mounting plate to the outside, to facilitate maintenance access to the parts feeder, while further, placing the parts feeder The transformer can be maintained by removing the mounting plate. Such an operation interrupts the flange for attaching the back cover covering the entire back surface of the box to the uppermost part of the box and the part from the position lower than the mounting plate to the lower end of the box. It has become possible by providing it in the form.
[0007]
The invention of claim 2 is characterized in that the mounting plate is supported by a long rail member fixed to the inner surface of the box, and the mounting plate is detachably fixed to the rail member. The support stability of the plate is good, and the loading plate can be easily taken in and out.
[0008]
The invention of claim 3 is characterized in that an insertion piece of the mounting plate is provided on the back side of the rail member, and an end on the back side of the mounting plate is made to enter the insertion piece. When it is difficult to arrange the fixing bolt in terms of space, the back side is fixed by such an insertion method.
[0009]
Claim 4, characterized in that you are openable cover is installed on the upper side of the parts feeder to facilitate the components recruitment to the parts feeder.
Further, the invention of claim 5 is the electric resistance welding apparatus according to any one of claims 1 to 4, wherein a base member made of a hollow member having a rectangular cross section and opened at an end is provided at the lower end of the box. It arrange | positions in parallel with the sliding direction of the description board. By adopting such a configuration, the fork of the forklift can be inserted into the base member, and the entire apparatus can be lifted and moved.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The embodiment of the invention will be described with reference to FIGS. 1 to 4. FIG. 1 is a rear view of the box 1 with a back cover 2 (see FIG. 4) removed. As apparent from FIG. 4, the box 1 has a vertically long shape formed by bending a steel plate having a thickness of 4 to 5 mm into a substantially U-shape, and is welded onto the base member 3. The base member 3 is formed by arranging two intermediate members 4 and 5 having a rectangular cross section and welding them together (the welded portion is painted black), and the fork of the forklift is hollow when the entire welding apparatus is lifted. It is inserted into the part. In the box 1, a vibration-type parts feeder 6 is installed at the uppermost position, a transformer 7 is disposed at a lower position, and an electric controller 8 is accommodated at a lower position.
[0011]
The parts feeder 6 is configured such that a bowl 10 for housing parts is disposed on a vibration generating unit 9. A feeding hose 12 is connected to a feeding unit 11 provided in the bowl 10. The passage plate 13 is welded (FIG. 4) and is connected to the delivery unit 11. Such a parts feeder 6 is mounted on a mounting plate 14 described later. The parts that have entered the delivery hose 12 from the delivery unit 11 are conveyed by being blown away by compressed air, but the illustration of the structure of the air ejection is omitted here.
[0012]
The transformer 7 is fixed on a shelf plate 15 welded in the box 1. Furthermore, the electric controller 8 includes a timer contactor, a controller, and the like, and is fixed on the base member 3.
[0013]
The mounting plate 14 is configured to be able to be taken out of the box 1 with the parts feeder 6 placed thereon. For this purpose, the long rail members 16 and 16 are fixed in a state parallel to the inner surface of the box 1. Has been. It is optimal to use a welding method for this fixing, but it is also possible to fasten with bolts. In the box 1, the upper side in FIG. 4 is the front side, the left and right sides in FIG. The rail members 16, 16 use a steel material having an L-shaped cross section, and both end portions of the mounting plate 14 are mounted on the flange portions 17, 17. The mounting plate 14 is fixed to the flange portion 17 using the bolt 18 and the nut 19, that is, detachable. This fixing location is employed at four locations on the rear side of the rail members 16 and 16 and the back cover 2 side, that is, the front side. The parts feeder 6 is supported on the mounting plate 14 via a plurality of support rubbers 20, and a support plate 21 to which the support rubber 20 is bonded is fixed on the mounting plate 14 with bolts 22. Yes.
[0014]
The parts dealt with here are iron square projection nuts on which welding projections are formed. For example, the dimensions are 12 mm in length and width and 5 mm in thickness. Further, the aforementioned delivery hose 12 has a rectangular cross section according to the shape of the projection nut, and is made of a synthetic resin material such as polypropylene so as to have flexibility.
[0015]
The transformer 7 on the shelf 15 is water-cooled, and a water pipe 24 is connected to the transformer 7 from a distribution box 23 of cooling water fixed on the shelf 15, and an annular water pipe 25 that returns from the transformer 7 to the distribution box 23 is provided. It has been. The distribution box 23 is connected to a water pump (not shown) through an external cock 26 and a joint pipe 27. In addition, although only one joint pipe 27 is shown in the figure, two pipes are actually provided on the cold water side and the hot water side.
[0016]
In order to fix the back cover 2 with bolts, flanges 28, 28 and 29, 29 are formed on the rear side of the box 1. The lower flanges 28, 28 are formed to the height shown in the two-dot chain line, and the upper flanges 29, 29 are formed at the upper end, whereby the loading / unloading space for the mounting plate 14 and the parts feeder 6 is formed. Is as large as possible.
[0017]
A support arm 30 is welded to the upper part of the front side of the box 1, and a movable electrode 32 is advanced and retracted by an air cylinder 31 fixed thereon. As shown in FIG. 4, the support arm 30 has a substantially “<” shape. Further, a support arm 33 is welded near the center of the front surface of the box 1, and the fixed electrode 35 is attached to the support bar 34 fixed thereon. Both electrodes 32 and 35 are arranged on the same axis.
[0018]
An opening 36 is provided on the upper side of the front portion of the box 1, and a component supply device 37 and a high-voltage electric wire extend toward the electrode, although not shown. The component supply device 37 has an air cylinder 38, a guide tube 39, and a supply rod 40 that moves forward and backward by the air cylinder 38 arranged coaxially, and a fixing bracket (not shown) coupled to an appropriate location in the box 1. The device 37 is attached to the box 1 by using. As apparent from FIG. 2, the delivery hose 12 is connected to the component supply device 37, and the projection nut from the delivery hose 12 is skewed by the supply rod 40 and supplied between both electrodes. Actually, a steel plate part (not shown) is placed on the fixed electrode 35, and a projection nut is fitted to the electrode guide pin protruding therefrom.
[0019]
In order for the operator to turn on / off the operating current of the welding machine and adjust the energization time, etc., a control panel that is normally used is installed in a place that is easily accessible. The control panel 41 was installed as shown in FIG. In this device, a pedestal 42 is welded to the support arm 30 and attached thereto as shown in FIG.
[0020]
An opening / closing lid 43 is provided on the upper side of the parts feeder 6 in order to prevent dust and the like from entering the bowl 10 of the parts feeder and to minimize the noise of the parts feeder 6 from spreading. Reference numeral 44 is a hinge of the opening / closing lid 43, and 45 is a handle that is grasped by hand when opening / closing.
[0021]
In the embodiment described so far, the case where the bolt 18 and the nut 19 are used also on the back side of the rail member 16 is illustrated, but it is possible to adopt the bolt and nut on the back side in relation to the space. When difficult, it is appropriate to employ the insertion piece 46 shown in FIGS. The insertion piece 46 is formed by welding an L-shaped iron member to the back side of the rail members 16 and 16, and when the mounting plate 14 is pushed in, the end portion of the insertion piece 46 enters the insertion piece 46 and the parts feeder is inserted. 6 to prevent the mounting plate 14 from rattling.
[0022]
【The invention's effect】
According to the first aspect of the present invention , the amount of ascent from the parts feeder to the parts supply device can be reduced as much as possible, and a conveyance route with a large amount of descent can be formed by the delivery hose, and the compressed air is also kept to a minimum and the use energy is minimized. Can be Further, it is not necessary to provide a replenishment hopper as in the prior art in order to put refilling parts in the bowl, which is advantageous for simplification of the structure.
[0023]
In addition , since the parts feeder is installed on a placing plate that can slide between the inside and outside of the box, the parts feeder itself is maintained by taking out the placing plate on which the parts feeder is placed. Maintenance can be easily performed, and further, maintenance of the transformer can be easily performed when the mounting plate is removed.
[0024]
According to the invention of claim 2 , the mounting plate is securely fixed, and when the mounting plate is removed, the mounting plate can be pulled out like a drawer, thus simplifying workability. Very advantageous. Furthermore, the rail member as in Example sometimes that is made of an L-shaped cross section of the mold steel, support and out of the above mounting plate is very easy to perform.
[0025]
According to the invention of claim 3, the mounting since plate bolt-nut fixing is only have the front side, the mounting attachment and detachment of the plate is greatly simplified, with captive action of mounting plate by insert It is possible to prevent inadvertent vibration of the mounting plate.
[0026]
According to the invention of claim 4, it is possible to prevent impurities into the bowl of the parts feeder is or Type invasion, can dissipate noise parts feeder to the outside.
[0027]
As an effect that can be described from the embodiment, by taking out the delivery hose from the back of the box, the piping posture of the delivery hose from the parts feeder to the parts supply device can be made as large as possible. Without excessive bending, the parts are delivered very smoothly.
[0028]
According to invention of Claim 5, the fork of a forklift can be inserted in a base member, and the whole apparatus can be lifted and moved. Furthermore, this is also an effect that can be described about the embodiment, but by welding the box to the base member made of a hollow member, the box can be formed in a form depending on the extremely rigid base member, even for the various stresses acting on the box during operation of the movable electrode it is advantageous.
[Brief description of the drawings]
FIG. 1 is a rear view of a box with a case back removed.
FIG. 2 is a side view of the box.
FIG. 3 is a rear view in which the support structure of the mounting plate is enlarged in terms of parts.
4 is a sectional view of (4)-(4) in FIG.
FIG. 5 is a three-dimensional view showing an installation state of an insertion piece.
FIG. 6 is a partial side view showing a state in which the mounting plate has entered the insertion piece.
[Explanation of symbols]
1 Box 6 Parts feeder 7 Transformer 8 Electric controller 14 Mounting plate 16 Rail members 32 and 35 Both electrodes 37 Parts supply device 43 Opening and closing lid 46 Insertion piece

Claims (5)

In an electric resistance welding apparatus in which an electrode is disposed on a wall surface of a vertically long box, and a parts feeder, a transformer, and an electric control device are disposed in the box, the parts feeder is in the box inner space, and the transformer and the electric control are provided. Placed above the apparatus , the parts feeder is placed on a mounting plate that can slide between the inside and outside of the box, and a flange for attaching a back cover that covers the entire back surface of the box, and the top of the box An electric resistance welding apparatus provided in a region extending from a position lower than the mounting plate to the lower end of the box . 2. The electric resistance welding apparatus according to claim 1 , wherein the mounting plate is supported by a long rail member fixed to the inner surface of the box, and the mounting plate is detachably fixed to the rail member . The electric resistance welding apparatus according to claim 2, wherein an insertion piece of the mounting plate is provided on the back side of the rail member, and an end on the back side of the mounting plate is made to enter the insertion piece . The electric resistance welding apparatus according to any one of claims 1 to 3, wherein an opening / closing lid is installed on the upper side of the parts feeder . The electric resistance welding apparatus according to any one of claims 1 to 4 , wherein a base member made of a hollow member having a rectangular cross section and opened at an end is arranged at the lower end of the box in parallel with the sliding direction of the mounting plate. .

Images