JP2007245183A - Device for lubricating and cooling die apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simplify a lubricating and cooling device in a die apparatus and to reduce the consumption of lubricator. <P>SOLUTION: Flowing passages (11, 15) for lubricator and a flowing passage for coolant, are mutually separated and nozzles (17) designed for spraying the lubricator into the lubricator flowing passages are allotted and nozzles (20, 21) designed for spraying the coolant into the coolant flowing passage, are allotted. Further, the flowing passages (11, 15) for lubricator and the flowing passage (10)for coolant, are arranged in a common housing (1) capable to fit to a guide arm (14) which can shift in the opened die apparatus. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a die device, particularly a forging die for forging and a tool for lubricating and cooling a tool, having a flow path for supplying the lubricant and the coolant and a nozzle for spraying the lubricant and the coolant. About.

  In order to manufacture the forged parts accurately, to improve the release of the forged parts from the forging die, and to reduce the wear of the tool, lubricate the forging die, and the operating temperature of the forging die It is known that it is necessary to cool and maintain within a defined temperature range. A disk spray nozzle that can be adapted by assembling the outer formwork of the forging mold form, and that has a hole in the disk facing the sculpture to take out a mixture of lubricant and water. Known (Patent Document 1). Such nozzle heads are relatively expensive and have the disadvantage that the lubricant / water mixture is not optimally sprayed and the amount of lubricant consumed is high.

Similarly, pneumatic spray nozzles are known which are guided by an industrial robot to carry out forging die sculptures in rail form and to spray a lubricant / water mixture.
A spray element dedicated to a device for generating and releasing a lubricant / coolant mixture is disclosed, for example, in US Pat. However, it is very expensive to operate such spray elements.

EP-PS0724486 DE4420679A1

  The object of the present invention is therefore to simplify such a lubrication and cooling device and to keep the consumption of lubricant as low as possible.

  In order to solve this problem, in the type of apparatus described at the outset, the flow paths for the lubricant and the coolant are separated from each other and a nozzle designed for spraying the lubricant is provided in the lubricant flow path. Assigned to the coolant flow path is assigned a nozzle designed to spray the coolant. This measure makes it possible to optimally design the spray nozzle for the coolant on the one hand and for the lubricant on the other hand, and for example to provide a so-called minimum lubrication nozzle for spraying the lubricant, which significantly reduces the consumption of the lubricant. Can be reduced. The same applies to coolant consumption, because again the optimum nozzle type can be used to spray the coolant.

  In this case, it is particularly advantageous that the flow paths for the lubricant and the coolant can be arranged in a single nozzle head in a common housing, and the housing is open in a manner known per se. It can be attached to a guide arm that can move into a frame or forging die. Thus, a separate guide for the coolant or lubricant nozzle is not necessary, and in particular the housing comprises a central chamber and at least one cover covering the chamber and comprising a flow path, in particular an annular flow path. If the flow path is separated from the chamber and at least one of the media required for spraying is added, a compact and relatively simple structure of the nozzle head can be achieved.

  In one embodiment of the present invention, the flow path in the cover can be formed as an annular flow path into which a medium necessary for spraying is introduced via a supply flow path coming from the outside. In this case, the supply channel can advantageously lead radially into the annular channel. In addition, the central chamber is provided with a coolant supply passage that communicates in the radial direction, and a circular cover plate provided with a plurality of coolant nozzles that are uniformly distributed in the diameter of the cover plate. It is advantageous to be closed. In this case, the cover plate can easily be screwed into the cover ring and closed towards the central chamber by means of a flat seal. In this case, a spray device having a simple structure can be obtained.

  In one aspect of the invention, a swirler can be connected in front of each coolant nozzle, in which case the swirler can be screwed into a screw hole that can be provided on the side of the coolant nozzle hole pointing to the central chamber. .

  In one aspect of the invention, the annular channel can be provided in the region of the housing surrounding the central chamber as a peripheral groove that is closed by a cover ring that includes the cover plate, and the cover plate is also screwed into the cover ring.

  In one aspect of the invention, the outer annular channel can be coupled to a lubricant supply channel and the inner annular channel can be coupled to a compressed air supply.

  In another form of the invention, it is possible to provide the cover ring with a lubricant spray nozzle, in particular in the form of a minimum lubrication nozzle, distributed evenly in diameter, said spray nozzle leading to the inner annular channel. Each is coupled with a branch flow path for supplying compressed air. Furthermore, this branch flow path can be easily formed as a cross hole that communicates with the center hole of the fixing screw for the lubricant spray nozzle.

  Finally, supply channels for compressed air, lubricant and coolant can be arranged extending parallel to each other in a pipe joint used as a guide arm, through which the device according to the invention, i.e. The nozzle head according to the invention can be introduced into a forging die or into a tool.

  Embodiments of the present invention will be described below with reference to the drawings.

  1 to 4 show a cylindrical housing 1 in the form of a shell opened on one side, and a flat portion 2 extending parallel to the central axis 3 of the housing 1 is provided on the side surface thereof. In this case, the central chamber 4 of the housing 1 has a cover constituted by a cover ring 5 having a side flat portion flush with the flat portion 2 on the opening side, and a cover plate 6 screwed into the cover ring. Closed. The cover plate is screwed into the screw 7 of the cover ring 5 and is provided with lateral parallel gripping surfaces 8 for tools for the assembly process. The flat head screw 9 holds the cover ring 5 in the housing 1.

  As shown in FIG. 3, the flat portion 2 in the region of the housing 1 is provided with a connecting portion for a medium to be sprayed, for example, a connecting portion 10 for cooling liquid, a connecting portion 11 for liquid lubricant, and A connection 12 for compressed air is provided. Next, as shown by broken lines in FIGS. 1 and 2, the flat portion 2 can be fitted with a flange 13 which is a portion of the pipe joint 14, and in this pipe joint, for the coolant, the lubricant and the compression The supply pipes for air extend parallel to each other, and this pipe joint can function as a guide arm for the nozzle head according to the invention.

  Six spray nozzles 17 for the lubricant are provided in the cover ring 5 with a uniform distribution in diameter, and the lubricant is supplied via the connecting portion 11 and flows into the annular flow path 15. The annular channel is first formed as a circumferential groove on the open side of the housing 1 and then closed by the mounted cover ring 5 and by an inserted seal ring 16, for example a commercially available zero ring. In this case, the spray nozzle 17 is formed as a so-called minimum spray nozzle known per se. Compressed air is supplied to these spray nozzles 17 via a separate annular channel 18 which is manufactured as a groove, similar to the annular channel 15, and then the cover ring 5 and the seal ring 16. It is closed by putting on. The inner annular flow path 18 is coupled to the screw thread space of the nozzle 17 through the respective branch holes 19, and as a result, the spray nozzle 17 is provided with a fine spray of lubricant in addition to the lubricant. Of compressed air can be supplied. In this way, the spray nozzle 17 can be designed in particular for compressed air spraying of lubricants. Thereby, the consumption of the lubricant can be kept very low.

  FIG. 5 shows a greatly enlarged cut-away view of the cover ring 5. The screw screw 50 for the lubricant nozzle 17 and the branch hole 19 for supplying compressed air leading to the space for the screw screw 50 are clearly visible. Furthermore, a screw hole 52 provided in the housing 1 for fixing the cover ring 5 is visible.

  The cylindrical chambers 4 of the housing 1 are connected to the coolant connection 10 in a manner not shown in detail through openings 30 provided in their walls, and in this way the coolant is It can be guided into the chamber 4 and from there it can be sprayed outwardly through the nozzle opening 20. Since the coolant is guided tangentially or at least eccentrically through the opening 30, a stable flow condition exists in the chamber 4. In this way, the cover plate 6 forms a bundle-like nozzle unit having seven nozzle holes 20 provided in the present embodiment, and each of them is provided with a swirler 21 as particularly clear from FIG. Connected to the previous stage, these swirlers generate a conical beam at the outlet of the nozzle hole 20. In this case, as can be understood from FIG. 4, the swirler 21 is screwed into the corresponding screw 23 from the opposite side of the chamber 4 of the mounting hole 22 for the swirler 21, and in this case, each swirler 21 provided with a threaded portion. The chamfered edge 24 is fitted into the screw 23. The swirler 21 includes a grip groove 25 for gripping the tool. The flat side 21a, which then transitions to the swirler channel 26, is used to allow the coolant to pass through. The cover plate 6 is provided with screws around it and is screwed into suitable female threads of the cover ring 5. The cover plate 6 is sealed against the cover ring 5 via the inserted flat seal ring 27. The nozzle head of FIGS. 1-4 is designed towards one side to spray coolant and lubricant. The dimensions of the nozzle head can be adapted to the tool for the forging die or forming technique to be sprayed. Therefore, the outer mold form and the arrangement of the spray nozzle 17 and the spray opening 20 can also be different from the circular shape.

  The mutual twisting of the housing 1 or the housing ring 1a is ensured by a cylindrical pin 28. The cylindrical pin extends parallel to the axis 3 and is gripped by the cover ring 5, and also reaches the inside of the housing 1 or the housing 1a. Point out that each will be guided.

  Next, FIGS. 7 to 9 show a nozzle head that corresponds in structure to FIGS. 1 to 4 but is designed for spraying on both sides of the formwork. Accordingly, like parts are given like reference numerals. The difference here is that the housing 1 'is not a shell closed on one side, but a housing ring formed by a cover comprising a cover ring 5 and a cover plate 6 screwed into the cover ring on both sides. Is to be formed. To secure the cover to the housing 1 ', one of the cover rings is provided with a screw hole, the two cover rings are provided with recesses for screw heads, and the housing 1' is provided with a conduction hole. Thus, both covers are connected to each other and to the housing 1 'by through bolts.

  Thus, during operation, coolant is introduced into the chamber 4 through the connection 10 and is distributed outwardly through the nozzle hole 20 in the form of a conical beam within the chamber. The liquid lubricant flows out into the annular flow path 15 through the connecting portion 11 and outwards through the spray nozzle 17. The atomized air coming from the inner annular channel groove 18 acts so that the lubricant supplied through the stepped hole in front of the spray nozzle 17 is subdivided into the finest droplets when flowing out of the spray nozzle. .

FIG. 6 is a plan view of a side surface with a spray nozzle of an apparatus according to the present invention formed as a nozzle head having a cylindrical prototype. FIG. 2 is a side view of the partially cut nozzle head of FIG. 1 in the direction of the cutting line II. It is an external view of the nozzle head of FIG. 1 in the direction of arrow III indicating the connection side. FIG. 3 is an enlarged view of FIG. 2. FIG. 2 is a partial view of the cover of the nozzle head of FIG. 1 from the inside of the nozzle head, but with a significantly enlarged spray nozzle not screwed. It is a perspective view of the swirler which should be screwed. FIG. 2 is an external view of a nozzle head similar to FIG. 1, but suitable for spraying coolant and lubricant toward both sides. FIG. 8 is a side view of the nozzle head of FIG. 7 cut along the cutting line VIII. FIG. 9 is a view similar to FIG. 3, and is an external view of the nozzle head in the direction of the connection portion of the nozzle heads of FIGS. 7 and 8.

Claims (13)

In an apparatus for lubricating and cooling a mold apparatus, comprising a flow path for supplying a lubricant and a coolant, and a nozzle for spraying the lubricant and the coolant.
The lubricant channel (11, 15) and the coolant channel are separated from each other;
A nozzle (17) designed for spraying the lubricant is assigned to the lubricant flow path,
Nozzles (20, 21) designed to spray the coolant are assigned to the coolant flow path,
In the common housing (1), the lubricant flow paths (11, 15) and the coolant flow path (10) can be attached to a guide arm (14) movable into an open mold apparatus. Arranged in the
A device characterized by that. The housing (1) comprises a central chamber (4) and at least one cover (6) covering the central chamber (4);
Channels (15, 18) are provided in the housing (1) that are separated from the central chamber (4) and introduce at least one of the media required for the spraying.
The apparatus according to claim 1. The flow path (15, 18) is an annular flow path into which one of the media necessary for the spray is introduced via a supply flow path (11, 12) coming from the outside.
The apparatus according to claim 2.   Device according to claim 3, characterized in that the supply channel (11, 12) leads radially into the annular channel (15, 18). The housing (1) is provided with a central chamber (4);
The central chamber (4) is provided with a supply flow path for the coolant which is eccentric and leads in particular in the tangential direction;
The central chamber (4) is closed by the cover plate (6) provided with coolant holes (20) arranged in a plurality uniformly distributed in the diameter of the circular cover plate (6);
An apparatus according to any one of claims 1 to 4, characterized in that The cover plate (6) is screwed into the cover ring (5) and closed towards the central chamber (4) by a flat seal ring (27);
The apparatus according to claim 5.   7. A device according to claim 5 or 6, characterized in that a swirler (21) is connected in front of each coolant hole (20).   8. Each swirler (21) is screwed into a screw hole (23) provided in a side of the coolant nozzle hole (20) pointing to the central chamber (4). apparatus.   The annular channel (15, 18) is provided in the region of the housing (1) surrounding the central chamber as a peripheral groove closed by the cover ring (5) including the cover plate (6); 9. A device according to claim 2 or any one of claims 3-8.   The outer annular channel (15) is coupled to the lubricant supply channel (11) and the inner annular channel (18) is coupled to the compressed air supply channel (12). 10. A device according to claim 9, characterized in that Lubricant spray nozzles (17) arranged uniformly in diameter are provided in the cover ring (5), and the spray nozzles (17) supply compressed air to the inner annular flow path (18). Each is coupled with a branch channel (19) for sending,
Device according to claim 9 or 10, characterized in that.   12. The device according to claim 11, characterized in that the branch channel (19) is formed as a cross hole leading to a center hole of a fixing screw for the lubricant spray nozzle.   Said supply channels (10, 11, 12) for lubricant, coolant and compressed air are at least in a common housing (1, 1 ') and in a pipe joint (14) used as a guide arm. Device according to any one of the preceding claims, characterized in that it is arranged partially extending parallel to each other.

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