JPH0634052Y2 - Grating manufacturing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a manufacturing apparatus for manufacturing a grid-shaped grating for covering a side ditch or a transverse groove of a road, for example, a main bar and a cross bar. The present invention relates to a grating manufacturing apparatus that abuts an end plate on a grating semi-finished product and welds the grating.

<Problems to be solved by the conventional technology and device> In the above-mentioned grating, a plurality of main bars having a length suitable for the groove width of the side groove to be used are arranged in parallel, and the main bars are fixed at a certain appropriate interval. The crossbars are formed in a lattice shape and are configured by end plates welded to both ends of the main bar.

In this grating, a semi-finished product consisting of a main bar and a cross bar is first manufactured, and then an end plate is attached to this semi-finished grating product.

Conventionally, when attaching an end plate to the above-mentioned grating semi-finished product, apply the end plate to the grating semi-finished product, maintain this state and weld the upper and lower surfaces of the joint part between the main bar and the end plate to complete the grating. There is.

As the manufacturing apparatus for this grating, for example, temporary welding along a conveyor that conveys the semifinished grating product,
There is one in which the respective devices for front surface main welding, inversion of semi-finished products, and back surface main welding are sequentially arranged (Japanese Patent Application No. 1-1787).
See No. 74).

However, since each of the above-mentioned devices is arranged in a plane along the conveyor, the scale of the device as a whole becomes very large, and there is a problem that it is not suitable for the production of various small quantities.

Further, the device for reversing the semi-finished product has to be installed above the ceiling of the main welding device, and there is a drawback that the installation place of the manufacturing device is limited. Once installed, it also has the drawback that it cannot be easily relocated.

In view of the above problems, an object of the present invention is to provide a manufacturing apparatus for grating, which is suitable for small-lot production of various types and can be relocated relatively easily.

<Means for Solving the Problems> In order to achieve the above-mentioned object, the manufacturing apparatus of the present invention has a base portion provided with the table supported by a column erected on a base, and an elevator provided on the base, An elevating unit having a frame body on which a bottom is placed, a carrying unit equipped with a supporting frame formed on a placing plate provided at a predetermined position on the frame body so as to be reciprocally movable by a motor, and the carrying unit. It is formed by the upper metal fittings that are transported by the above and the lower metal fittings that are placed on the table and place the semifinished grating products. A holding metal member that can be formed and a rod that supports a push-up bar that pushes up the finished grating released from the clamped state are provided, and the rod is moved up and down via an elevating unit that is vertically driven by the elevator. And a push-up portion having a push-up plate.

<Operation> According to the above configuration, the semifinished grating product is supplied onto the lower metal fitting, the transport section is driven to place the upper metal fitting on the lower metal fitting, and both metal fittings hold the semifinished grating product. In this state, one surface side of the joint portion between the main bar and the end plate is welded.

Then, by driving the push-up part, the holding metal fitting holding the semi-finished product is lifted and inverted, and placed on the table again,
The other surface side of the joining portion is welded.

Further, the push-up section is driven again to raise the completed grating and take it out.

<Embodiment> Next, an embodiment of the present invention will be described with reference to the drawings.

1 to 3 show a front view, a plan view and a side view of a manufacturing apparatus according to the present invention.

The manufacturing apparatus includes a base 2 having a table 21 supported by four columns 23 standing on a base 22, an elevating part 3 attached to the base 2 via an elevator 31 so as to be vertically movable, and an elevating / lowering part. A rail 41 provided on the upper surface of the section 3 is provided with a conveying section 4 which is horizontally reciprocally movable, a holding metal fitting 5 for holding the upper and lower portions of the semifinished grating product A, and a pushing-up section 6 for taking out the completed grating. It is equipped with. The elevating unit 3 mounts a frame 33 having a pair of mounting plates 32 arranged long in the left-right direction in the drawing on a link-type elevator 31 fixed on the base 22, and drives the elevator 31. By doing so, the mounting plate 32 can be moved up and down.

The transport unit 4 slidably mounts a support frame 42, which is U-shaped in plan view, connected at the left end on two rails 41 provided on a pair of mounting plates 32 of the elevator 3. That is, one upper fitting 51 of the holding fitting 5, which will be described later, is transported onto the lower fitting 52 mounted on the table 21.

As a drive mechanism for the transport unit 4, a pulse motor 44 capable of rotating in the forward and reverse directions is provided on one mounting plate 32, and
The gear 44a attached to the rotary shaft of the above is configured to mesh with the rack 43 installed in the sliding direction of the support frame 42.

Further, on the other mounting plate 32, a pulse motor for reversing the holding metal fitting 5 in a state where the semi-finished product A described later is held.
There are 45.

As shown in FIG. 4, the holding metal fitting 5 has a two-piece structure composed of the metal fitting 51 and the lower metal fitting 52. Lower bracket 52
Is provided with a pair of comb tooth guides 53 into which the main bar M of the semi-finished product A arranged in its longitudinal direction is inserted.
It is placed in. Further, the metal fitting 51 is formed to have substantially the same size as the lower metal fitting 52, and side plates 54 each having two locking projections 55 are attached to both ends orthogonal to the moving direction. The locking projection 55 is a locking recess provided in the support frame 42.
It can be fitted and mounted on the mounting member 47, and the supporting frame 42 moves while being mounted and is conveyed above the lower metal fitting 52.

Then, the upper fitting 51 is put on the semi-finished product A placed on the lower fitting 52, and the upper fitting 51 and the lower fitting 52 hold the semi-finished product A.

In addition, the side plates 54 on both sides of the upper fitting 51 are provided with reversing rotary shafts 56 at substantially the center positions thereof. On the other hand, support frame
The shaft 42 is provided with a rotary shaft support recess 48 for supporting the reversing rotary shaft 56 at an intermediate position between the two locking recesses 47. Further, the reversing rotary shaft 56 on the pulse motor 45 side (rear side) has a drive gear 45 provided on the output shaft of the motor 45.
A reversing gear 56a that meshes with a is attached, and when the reversing rotation shaft 56 is fitted and placed in the rotation shaft supporting recess 48, both gears 45a and 56a mesh with each other. The rotary shaft support recess 48
Is provided in such a positional relationship that the reversing rotary shaft 56 is not mounted when the locking projection 55 is mounted on the locking recess 47.

The push-up part 6 is composed of a plurality of support bars hanging from the table 21.
The push-up plate 62 is hung up and down freely on the 61.
Further, a plurality of rods 63 are provided upright with push-up bars 64, 64 abutting on the lower surface of the main bar M at their upper ends.

Then, when the frame body 33 of the elevating part 3 rises, the push-up plate 62 is
A plurality of push-up plate receivers 35 standing upright on the bottom plate 34 are brought into contact with each other and pushed up, and the push-up bar 64 can be pushed up via the rod 63, and the grating is lifted from the lower metal fitting 52.

The push-up plate 62 is guided by a support rod 61 provided on the lower surface of the table 21 to move up and down.

Next, the operation of the manufacturing apparatus of the above embodiment will be described with reference to FIGS.

First, when the semifinished product A is supplied to the lower metal fitting 52, as shown in FIGS. 1 and 2 and FIG. 5A, the elevating part 3 is slightly raised from the lowermost end, and the supporting frame is The upper metal fitting 51 placed on the 42 is moved to a position separated from above the lower metal fitting 52. In this state, the semi-finished product A is placed in conformity with the groove of the comb tooth guide 53 of the lower metal fitting 52 and fixed by an appropriate means. Then, the end plates E are attached to both ends of the main bar M, the hydraulic cylinder 81 is driven, and the end plate E is pressed against the end surface of the main bar M by the pressing bar 82 provided at the tip thereof. At this time, the other end surface side of the main bar M is brought into contact with an end plate arranged between the main bar M and the reference bar 83 fixed to the table 21, and is pressed by the pressing bar 82 to end. Fix the plate E (see FIG. 2).

Next, the pulse motor 44 is driven in the normal direction to move the support frame 42 to the upper side of the table 21, and the upper fitting 51 is moved to the lower fitting 52.
(See FIG. 5 (b)).

Then, when the elevating part 3 is lowered, the support frame 42 is also lowered, and when the locking projection 55 of the upper metal fitting 51 is separated from the locking recess 47 of the support frame 42, the upper metal fitting 51 is moved to the lower metal fitting 52. Put it in place. Then, both upper fittings 51 and lower fittings 52 are fixed by an appropriate fastening means.

Welding (the welding mechanism is omitted) on the upper surface side of the joint portion between the main bar M and the end plate E of the semi-finished product A held by the holding metal fitting 5 is performed (see FIG. 5 (c)).

By the time the welding of the joining portion is completed, the pulse motor 44 is rotated in the reverse direction while the elevating part 3 is lowered so that the rotation supporting concave portion 48 of the supporting frame 42 comes directly under the reversing rotating shaft 56 of the side plate 54. The support frame 42 is returned to a little.

Then, when the welding is completed, the elevating part 3 is raised,
The reversing rotary shaft 56 is placed in the rotary shaft supporting recess 48, and the holding metal fitting 5 which is integrated with the semi-finished product A being held is held on the table.
Lift above 21. After that, the pulse motor 45 on the rear side is driven, the holding metal fitting 5 is rotated 180 degrees through the driving gear 45a and the reversing gear 56a, and the top and bottom thereof are reversed (see FIG. 5 (d)). .

When the holding metal fitting 5 is turned over, the holding metal fitting 5 is returned to the original table.
It is put down on 21 and fixed by an appropriate means, and the opposite surface (back surface) of the joint portion between the main bar M and the end plate E is welded.

Further, when the welding of the joining portion is completed, the holding metal fitting 5 is raised to the original position of the elevating part 3 again and integrated.
180 degrees to return it to its original state, then lower the elevating part 3, lower the holding fixture 5 onto the table 21 again, and further lower the support frame 42 until the rotary shaft 56 separates from the support recess 48. , Release the fixation of the upper fitting 51 and the lower fitting 52. Then, after slightly moving the pulse motor 44 in the forward direction to move the support frame 42, the locking recess 47 is moved below the locking projection 55, and the elevating part 3 is raised to move the locking recess. The locking projection 55 is placed on the 47, the upper fitting 51 is separated from the lower fitting 52, and the pulse motor 44 is driven in the reverse direction to move the support frame 42 and retract it.

Then, the elevating part 3 is fully raised to push up the push-up plate 62 by the push-up plate receiver 35 below the frame 33. Then, the push-up bar 64 rises and pushes the grating B with the end plate E welded thereon to above the lower metal fitting 52,
The completed grating B is discharged (see FIG. 5 (e)).

When the discharging of the grating B is completed, the elevating part 3 is lowered to return to the position shown in FIG. 5 (a) to prepare for the next supply of the semi-finished product A.

<Effects of the Invention> As described above, according to the grating manufacturing apparatus of the present invention, all the parts for raising and reversing the grating can be performed by the elevator installed on the base of the base. Since the large-scale hoisting and reversing device required for the above-mentioned device are eliminated, the device for performing all the steps from the supply of semi-finished products to the completion can be configured compactly and integrally. This allows
The manufacturing apparatus can be installed in a relatively small installation area, and the transfer is easy. Therefore, it is suitable as equipment for performing small-lot production of various types.

[Brief description of drawings]

FIG. 1 is a front view of a grating manufacturing apparatus according to the present invention, FIG. 2 is a plan view of the manufacturing apparatus, FIG. 3 is a side view of the manufacturing apparatus, and FIG. 4 is a perspective view of a main part of a holding metal fitting. 5 (a) to 5 (e) are front views illustrating respective manufacturing steps of the manufacturing apparatus. 2 ... Base part, 3 ... Lifting part, 4 ... Conveying part, 44 ... Pulse motor, 5 ... Holding fitting, 51 ... Upper fitting, 52 ... Lower fitting, 6 ... Pushing up part, A ... … Semi-finished grating, M… Main bar, E… End plate, C… Crossbar.

Claims (1)

[Scope of utility model registration request] 1. A grating manufacturing apparatus in which a semifinished product made of a main bar and a crossbar is held by a holding metal fitting on a table, and end plates are abutted and welded to both ends of the main bar. A base provided with the table supported by a column, an elevator provided with a frame body having a bottom placed on an elevator provided on the base, and a mounting plate provided at a predetermined position on the frame. In addition, it is formed by a transfer part equipped with a support frame formed so as to be reciprocally movable by a motor, an upper metal part transferred by the transfer part, and a lower metal part fixed on the table and mounting a grating semifinished product. , A holding metal fitting that is supported by the support frame in a state where the semifinished product is sandwiched between the two metal fittings and is vertically reversible, and a grating released from the sandwiched status. A manufacturing apparatus for grating, comprising: a push-up portion that includes a rod that supports a push-up bar that pushes up a product and that has a push-up plate that moves up and down through an elevator that is vertically driven by the elevator. .