JPH0527241Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Field of industrial application] This invention relates to a forging heating furnace for aluminum and aluminum alloys, and in particular to a forging heating furnace in which a special auxiliary device is attached to the conveyor that conveys the workpiece. be.

[Prior Art] This will be explained with reference to FIGS. 1, 4, and 6.

In a forging heating furnace for aluminum and its alloys, the conveyor 16 for transporting the workpieces is constructed as follows. That is, a gutter-shaped support 2 with a V-shaped cross section 2b is horizontally suspended between the endless chains 1 and 1 arranged on the left and right sides, and a columnar workpiece 3 with a substantially circular outer surface is placed on the gutter-shaped support 2, and the work is carried out intermittently. Work 3 was being heated while being moved.

[Problems to be solved by the invention] In the conventional forging heating furnace mentioned above, if the workpiece is not taken out for a long time, the time to heat the workpiece becomes too long, and the workpiece seizes and sticks to the gutter-shaped holder. It was sometimes difficult to extract the workpieces from the furnace. Another drawback is that the extrusion frictional force required for loading and unloading the work into the trough-shaped receiver is large.

This idea is a forging for aluminum and its alloys that does not cause the workpiece to stick even if extraction of the workpiece is stopped for a long time in the forging heating furnace, and that reduces the extrusion friction force required for charging and extracting the workpiece. The aim is to provide a heating furnace.

[Means for solving problems] This will be explained with reference to FIGS. 1 to 5.

The forging heating furnace for aluminum and its alloys according to this invention has a large number of elongated gutter-like supports 2,..., between the left and right links of the endless chains 1, 1 arranged on the left and right sides.
2 are hung horizontally at predetermined intervals so as to be perpendicular to the direction of movement of the endless chain to form a conveyor 16, and gutter-like receivers on which workpieces 3 are temporarily stopped are placed horizontally at the start and end sides of the conveyor, respectively. A forging heating furnace configured to be inserted into and extracted from a concave groove portion of a forging furnace 2, and a rod-shaped workpiece 3 having a substantially circular outer circumferential surface placed on the gutter-shaped receiver 2 and heated while moving the workpiece 3 intermittently. 4, a release agent spraying device 5 is installed to prevent the workpiece from seizing on the gutter-like support 2, and the cross-sectional shape of the gutter-like support 2 is shaped into a circle with a radius larger than the radius of curvature of the outer peripheral surface of the workpiece. It is formed in an arc shape, and the nozzle 6 of the release agent spraying device 5 faces above the gutter-like receiver 2 located at the upward temporary stop position A to C before feeding the workpiece 3, and the nozzle 6 of the mold release agent spraying device 5 is temporarily stopped before placing the workpiece. An operation control device 7 for a mold release agent spraying device 5 for spraying a predetermined amount of heat-resistant mold release agent onto the gutter-like receiver 2 is provided only inside.

[Example] This will be explained with reference to FIGS. 1 to 5.

4 is a forging heating furnace for aluminum and its alloys.
Reference numerals 1 and 1 denote endless chains disposed on the left and right sides of the heating furnace 4, and 2, . A conveyor 16 is constituted by a large number of gutter-like receivers 2, . . Reference numeral 3 denotes a rod-shaped workpiece having a substantially circular outer circumferential surface, and is constructed so that the workpiece 3 is placed on a gutter-shaped support 2 and is moved intermittently to heat the workpiece 3. The radius of the arc shape of the trough-like support 2 is selected to be larger than the radius of curvature of the outer peripheral surface of the workpiece. Reference numeral 8 denotes a guide member disposed outside the heating furnace 4, which is disposed on the starting end side of the conveyor 16 in a direction perpendicular to the traveling direction of the conveyor 16, that is, in a horizontal direction, and the workpiece 3 placed on the guide member 8 is The pusher 9 pushes the workpiece 3 through the window hole 10 of the heating furnace 4 into the groove 2 of the gutter-shaped receiver.

Reference numeral 11 is a pedestal, 12 is a manifold, 13 is an atomizer, 17 is a copper pipe, and 6 is a nozzle, and the mold release agent spraying device 5 is constituted by the above.

The nozzle 6 of the above-mentioned mold release agent spraying device 5 faces onto the rod-shaped support 2 located at any of the upward temporary stop positions A, B, and C before loading the workpiece 3. 7
is an operation control device of the spraying device 5, which applies a predetermined amount of mold release agent 1 to the gutter-shaped receiver 2 only during a temporary stop before placing the workpiece.
4 is now sprayed. In addition, 15 is a work extracting device disposed laterally on the terminal end side of the conveyor 16, and is adapted to push out the work 3 in the groove of the trough-like receiver 2 along the longitudinal direction of the groove.

[Function] When the gutter-shaped receiver 2 reaches the temporary stop position A, B, or C (C in the figure), the operation control device 7 operates,
The mold release agent spraying device 5 is operated, and a predetermined amount of heat-resistant mold release agent 14 is sprayed onto the gutter-shaped receiver 2 from the nozzle 6. The mold release agent is the same as that sprayed onto molds for casting aluminum or aluminum alloys.

A workpiece 3 is loaded by a pusher 9 onto the trough-shaped receiver 2 coated with a mold release agent 14. At this time, since the workpiece 3 is loaded onto the arc-shaped trough-like holder 2, the frictional resistance is small.

When the conveyor 16 is conveyed, the workpiece 3 rattles on the trough-shaped holder 2 because the cross-sectional shape of the trough-shaped holder 2 is formed in an arc shape with a radius larger than the radius of curvature of the outer peripheral surface of the workpiece. For this reason, the gutter-shaped receiver 2
The position of work 3 changes above. Therefore, sticking of the workpiece due to seizure does not occur.

When the workpiece 3 is extracted by the extraction device 15, the mold release agent 14 prevents the workpiece 3 from sticking together, and the workpiece 3 is pushed on the arcuate trough-shaped support 2, which reduces friction. resistance is small.

[Effects of the invention] The conventional gutter-shaped support had a V-shaped cross-section, as shown in FIG. It is believed that the V-shape provides good stability for the workpiece, and there is no risk of the workpiece being rattled while being fed by the conveyor, so it will not damage the workpiece. However, in the case of a V-shape, large frictional resistance occurs when a workpiece is fed or extracted by a pusher.

In the present invention, the cross-sectional shape is made into a circular arc with a radius larger than the radius of curvature of the outer circumferential surface of the workpiece, which causes the workpiece to wobble when being conveyed by the conveyor. It turned out that the workpiece would hardly be damaged if it was not used. Furthermore, when the workpiece is rattled, it is less likely that the workpiece will seize and stick on the gutter-shaped support, making the extraction work significantly easier.
Note that even if a thin, easily broken, small fin-like object is protruded from the circumferential surface of the workpiece, damage to the workpiece can be prevented by placing the workpiece in such a way that the fins do not fall down.

In addition, a device for applying a mold release agent is installed on the gutter-shaped holder, and if the unloading of the workpiece is expected to be stopped for a long time, or if the workpiece is likely to seize, the trough-shaped holder should be installed in advance. By applying a mold release agent, it is possible to prevent the workpiece from seizing.

That is, according to the present invention, it is possible to prevent the workpiece from seizing and sticking on the gutter-shaped support, and to greatly contribute to improving yield and efficiency.

[Brief explanation of the drawing]

Figures 1 to 5 show an embodiment of a forging heating furnace for aluminum and its alloys according to this invention.
Figure 1 is an overall side view, Figure 2 is an overall plan view, and Figure 3 is an overall side view.
The figure is an enlarged side view of the main part, Figure 4 is a front view of the main part,
FIG. 5 is a sectional view of the trough-shaped receiver. FIG. 6 is a sectional view of a conventional receiver. 1...Endless chain, 2...Gutter-shaped receiver, 2
a...Circular arc shape, 2b...V shape, 3...Work, 4
... Forging heating furnace, 5 ... Release agent spraying device, 6 ...
Nozzle, 7... Operation control device, 8... Guide member, 9... Pusher, 10... Window hole, 11...
Frame, 12... Manifold, 13... Atomizer, 14... Mold release agent, 15... Work extraction device, 16... Conveyor, 17... Copper pipe, A,
B, C: Temporary stop position of the gutter-shaped receiver.

Claims (1)

[Claims for Utility Model Registration] A large number of elongated gutter-like supports 2, . A conveyor 16 is constructed by hanging horizontally, and the workpiece 3 is inserted and extracted from the horizontal direction into the groove of the suspended gutter-like holder 2 at the starting end and the terminal end of the conveyor, respectively, and the above-mentioned A forging heating furnace 4 configured to heat a bar-shaped workpiece 3 having a substantially circular outer circumferential surface on a gutter-shaped receiver 2 and heat the workpiece 3 while moving the workpiece intermittently, and for preventing the workpiece from seizing on the gutter-shaped receiver 2. The mold release agent spraying device 5 is installed, and the cross-sectional shape of the gutter-like receiver 2 is formed into an arc shape with a radius larger than the radius of curvature of the outer peripheral surface of the workpiece, and the workpiece 3 is placed at an upward temporary stop position before being fed. The nozzle 6 of the mold release agent spraying device 5 is faced onto the gutter-like supports 2 located at A to C, and a predetermined amount of heat-resistant mold release is applied to the gutter-like supports 2 only during a temporary stop before placing the workpiece. A forging heating furnace for aluminum and alloys thereof, characterized in that an operation control device 7 of a release agent spraying device 5 for spraying a release agent is provided.