WO2022053086A1 - Schmiedemaschine - Google Patents

Schmiedemaschine Download PDF

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Publication number
WO2022053086A1
WO2022053086A1 PCT/CZ2021/000042 CZ2021000042W WO2022053086A1 WO 2022053086 A1 WO2022053086 A1 WO 2022053086A1 CZ 2021000042 W CZ2021000042 W CZ 2021000042W WO 2022053086 A1 WO2022053086 A1 WO 2022053086A1
Authority
WO
WIPO (PCT)
Prior art keywords
lubricating
segment
forging machine
base
lubricant
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CZ2021/000042
Other languages
German (de)
English (en)
French (fr)
Inventor
Gustav Gráf
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Skoda Auto AS
Original Assignee
Skoda Auto AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Skoda Auto AS filed Critical Skoda Auto AS
Priority to CN202180054478.0A priority Critical patent/CN116056815A/zh
Priority to EP21799168.6A priority patent/EP4221911B1/de
Publication of WO2022053086A1 publication Critical patent/WO2022053086A1/de
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J3/00Lubricating during forging or pressing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J9/00Forging presses
    • B21J9/02Special design or construction
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21KMAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K29/00Arrangements for heating or cooling during processing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B30PRESSES
    • B30BPRESSES IN GENERAL
    • B30B15/00Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/0088Lubricating means

Definitions

  • the solution concerns the field of forming machines, especially forging machines, specifically the mechanism of movement of lubricating pipes designed for supplying lubricant to the working area of the machine and to the surface of the tools.
  • the lubricant which is usually a water-based mixture, provides both the cooling of the tools and the lubrication itself.
  • Existing solutions encounter the problem of lubrication, especially in forging machines (forming presses) with short cycle times or multiple operations on the machine within a machine stroke, i.e. on machines with, for example, a forging transfer.
  • the problem to be solved with lubrication is that the heat introduced from the surface of the working tool after the operation has been carried out must be quickly dissipated so that this heat does not penetrate further into the tool and thus does not lead to excessive accumulation of heat in the tool occurs, which results in a reduction in the properties of the tool and thus a reduction in its service life.
  • Solutions are known in the state of the art which enable the lubricant to be applied quickly after a forming process has been carried out.
  • One such solution is the stationary arrangement of lubricating nozzles directly in the machine work area or on the transfer beam. Although this solution ensures rapid supply of lubricant to the working tool, it is still necessary to wait for the forging to be removed from the forming cavity or from the machine work area.
  • a major disadvantage of this solution is that the distance between the lubricating nozzle and the tool surface to be cooled is large, which leads to significant losses of lubricant through spraying into the surrounding press area, so that a larger amount of lubricant has to be used together with higher pressure of the medium in the lubricating system to effectively transfer this lubricant to the surface of the working tool.
  • Another disadvantage of stationary nozzles is the fact that the lubrication cycle can only be started after the machine has completed its working stroke, i.e. when the ram is in the upper position.
  • the problem of shortening the lubrication paths is partially solved by the arrangement of lubrication nozzles in the mold assembly, in which the lubricating medium is led through a labyrinth of channels in the mold assembly to the nozzles arranged on the surface of the mold and from there the lubricant is then transferred to the opposite mold is applied.
  • the forging has to be removed, so that there is a delay in starting the supply of lubricant to the surface of the tool and, consequently, increased consumption.
  • this solution is more technically demanding and cannot be easily applied to existing forging machines.
  • the unfavorable position of the stationary nozzles can be solved, for example, by using movable nozzles.
  • Movable nozzles which are located on so-called grease guns, are manually inserted into the working area of the press by the press operator after the forming processes have been carried out.
  • the actual lubrication of the die surface is then performed by the press operator at his own discretion, the position of the nozzle to the die surface is not defined, and thus the lubrication quality is not stable and subject to the human factor.
  • This solution to tool lubrication is time-consuming and thereby increases downtime.
  • the nozzle handling is also lubricated by a link mechanism, which is connected directly to the ram movement by a fixed mechanical connection.
  • a link mechanism which is connected directly to the ram movement by a fixed mechanical connection.
  • FIG. 1 The disadvantage of this solution lies in the considerable massiveness of the mechanism, resulting from the need to absorb the dynamic impacts of the mechanism due to the dynamics of the movement of the ram, which has a negative impact on the limitations usable space in the vicinity of the press.
  • Another disadvantage is the fact that lubrication can only begin when the ram comes to a standstill at top dead center, i.e. when the mechanism is in the rest position, so that lubrication can only begin after the end of the pressing stroke ( i.e. with a delay after the end of the transformation).
  • the forging machine comprising two bases movable between a contact position and a rebound position and a space between them, the first base having a first working tool and the second base having a second working tool and the working tools for pressing a object lying between them are configured in a form-fitting manner, the forging machine also comprising a support segment on which is fastened a lubricating segment which can be moved in the intermediate space and is used for spraying the first and second working tools with lubricant, said lubricating segment being in its basic position relative to the first working tool when the bases are in the rebound position, and the lubricating segment or supporting segment is fixed to the forging machine in such a way that when the bases approach and the lubricating or supporting segment is brought into contact with the second base, this lubricating segment together with the second base becomes the first n base is approached or pushed by the second base in the direction towards the first base and when move the bases apart, this is successively returned to the basic position.
  • the return position in the case of using a forging machine comprising a movable ram and a stationary bed, is the position of the ram at top dead center, while the contact position is the position of the ram at bottom dead center (working stroke).
  • the forging machine advantageously also has a spring installed in a prestressed manner, the spring being fastened with its first end to the first base and with its second end to the lubricating segment and/or supporting segment.
  • the force generated by the preload pushes the lubricating segment in the direction of action into the basic position opposite the first tool. This shields the lubricating segment and also the supporting segment from the vibrations when the bases are moved.
  • the spring can also be used to determine the position of the lubricating segment or the support segment and possibly also to move the lubricating segment into its basic position relative to the first tool.
  • the lubricating segment has a row of nozzles for the supply of lubricant and the forging machine comprises at least one lubricant circuit designed for the supply of lubricant to the nozzles.
  • These nozzles are oriented differently so that the lubricant is supplied to the first working tool in the appropriate direction.
  • nozzles are arranged on the lubricating segment, which are directed towards the first tool (in the basic position of the lubricating segment) and nozzles which are directed towards the second working tool. Then there is a lubrication circuit that supplies the lubricant to the nozzles.
  • the forging machine further comprises a stopper fixedly connected to the first base, the stopper being arranged to define the home position of the lubricating segment or support segment through contact with the lubricating segment or support segment.
  • This stop serves to determine the maximum position of the lubricating segment, as a result of which the basic position of the lubricating segment can be reliably approached, and it can be pressed against this stop by a compression spring.
  • This stop is advantageously adjustable. The adjustability of this stop enables the basic position of the lubricating segment to be set. For example when changing tools.
  • the lubricating segment or support segment has a support element that is implemented as a roller bearing, pivot pin, carriage or a surface that reduces friction and impact.
  • This element comprises the lubricating segment or support segment, the bearing element being arranged such that when the bases approach each other the second base contacts the lubricating segment or support segment. It is therefore located where the distance to the second base is smallest. This element avoids damaging the lubricating segment or supporting segment and also reduces the friction caused by eventual advancement of the lubricating segment on the surface of the second base.
  • the forging machine preferably comprises at least two lubricating segments and two support segments according to any one of the preceding claims. These two lubricating segments are mirrored to each other, which improves heat transfer and supports the even supply of lubricant (i.e. even heat dissipation from the tool).
  • the support segment is a foldable arm pivotally connected to the lubricating segment at one end and to the first base at the other end.
  • This arrangement allows for the simplest and most consistent design of the support segment.
  • This support segment also has a small number of moving parts.
  • the lubricating segment In its basic position relative to the first tool, the lubricating segment preferably engages at least part of its circumference in the plan projection in the first working tool and the second working tool. This brings the lubricating segment closer to the area where the best supply of lubricant to the tool is done.
  • both the lubricating segment and the supporting segment with their circumferences are completely outside the plan projection of the working tool.
  • the support segment is located outside of the plan projection of the work implement at all times, the lubricating segment is spaced from the plan projection of the work implement by the second base, due to the kinematic linkage of the lubricating segment and the base (the first or second or both).
  • the fact that the lubricating segment is in its contact position with respect to the first tool with the largest part of its circumference outside the plan projection of the first working tool and the second working tool is also advantageously used.
  • the support segment when designing the support segment as an arm attached pivotably to the first base, the fact that the plan projection of the first working tool is located in the contact position of the bases between the pivot axis of the attachment of the pivot arm and the lubricating segment.
  • the pivot attachment of the pivot arm is on the other side of the work tool than the lubricating segment. This shortens the time required for advancing the lubricating segment towards the working tool, and thereby achieves a timely supply of lubricant to the working tool.
  • the swivel arm and the lubricating segment are hollow and the lubricant is supplied to the nozzles through the swivel arm and the lubricating segment. This eliminates the number of external parts exposed to the elements, such as the lubricant supply hoses.
  • the lubricating segment comprises two circuits of the lubricating nozzles, of which each of the circuits of the lubricating nozzles is designed for supplying lubricant to a subset of nozzles, with each of the circuits being designed for supplying lubricant independently of one another.
  • each of the circuits being designed for supplying lubricant independently of one another.
  • the forging machine advantageously includes a control unit for controlling the lubrication circuits and for setting the lubrication start time and Lubrication duration is designed This unit allows optional setting of the start of the lubricant supply as well as the duration.
  • FIG. 2 shows a schematic representation of an embodiment of the invention in a non-use position of the lubricating segments
  • FIG. 3 shows a schematic representation of an embodiment of the invention in the basic position of the lubricating segments with the indicated lubricant scattered from the nozzles
  • Fig. 4 shows a schematic representation of the detail of the arms and lubricating segments according to an embodiment of the invention in the non-use position lubricating segments
  • Fig. 5 A schematic representation of an embodiment of the invention in the use position of the lubricating segments at the time when the arm (lubricating segment) is in first contact with the lower working tool (when advancing from the basic position of the lubricating segments to the non-use position) or when the arm (lubricating segment ) is in final contact with the lower working tool (when moving from the non-use position of the lubricating segments to the home position of the lubricating segments),
  • FIG. 6 shows a schematic representation of an embodiment of the invention with lubricating segments in the feed between the non-use position and the basic position, or vice versa with lubricating segments in the feed between the basic position and the non-use position
  • 7 shows a schematic representation of an embodiment of the invention with the lubricating segment in the non-use position
  • FIG. 8 shows a schematic representation of an alternative embodiment of the fastening of the stop and the spring
  • FIG. 10 shows a schematic representation of a third exemplary embodiment of the forging machine according to the invention in the swing-out position and with lubricating segments in the basic position
  • FIG. 11 shows a schematic representation of a fourth exemplary embodiment of the forging machine according to the invention in the retracting position and with lubricating segments in the basic position
  • FIG. 12 shows a schematic representation of a fourth embodiment of the forging machine according to the invention in the contact position and the non-use position of the lubricating segments
  • FIG. 13 shows a schematic representation of a fifth exemplary embodiment of the forging machine according to the invention in the swing-out position and with lubricating segments in the basic position
  • FIG. 14 shows a schematic representation of a sixth exemplary embodiment of the forging machine according to the invention in the swing-out position and with lubricating segments in the basic position.
  • the forging machine of the present invention includes two bases, the first base having a first working tool and the second base having a second working tool.
  • the first base can represent, for example, a pestle or hammer hammer that is movable.
  • the first work tool in this case is the upper work tool 3 fixed with the upper tool block 11 to the first base.
  • the second base there can be a bed that is immovable and has the lower working tool 4 .
  • dies can be used as working tools.
  • the second base can also be movable, or only the lower base can be positionable.
  • These bases have two mutual positions, the swing position and the contact position. In the raised position, the bases and, above all, the working tools are spaced apart and in the contact position they are in contact and the object between the tools is pressed (possibly punched), i.e. the semi-finished product is three-dimensionally formed between the working tools.
  • the forging machine includes a supporting segment on which the lubricating segment 1 for spraying the first and second working tools with lubricant is fixed, which is in its basic position opposite to the first working tool when the bases are in the retrieval position, and the lubricating segment 1 or supporting segment so on the Forging machine are movably mounted such that when the bases approach and the lubricating or supporting segment is brought into contact with the second base, this lubricating segment is approached together with the second base to the first base or is pushed by the second base in the direction towards the first base and is successively returned to the basic position when the bases are spaced apart.
  • the basic position of the lubricating segment relative to the first working tool is designed in such a way that an appropriate supply of lubricant to the first working tool and, given a sufficient distance from the second working tool, also to the second working tool, is made possible.
  • the lubricating segment is positioned in such a way that it is spaced from the working tool in the vertical direction.
  • the supporting segment is attached to one of the bases and has at least one degree of freedom, which allows the movement of the lubricating segment 1 in the vertical direction.
  • the specific design of the individual components of the lubricating machine according to the invention is described below using a forging press.
  • the invention is part of a forging machine comprising a bed on which the lower working tool 4 is mounted, the lower working tool being fixed to the bed by means of a lower tool device.
  • the forging machine further includes a ram including the upper die 11 that is movable and performs forging by means of the upper work die 3 connected to the upper die block 11, the upper work die 3 being fixed by the upper die jig.
  • a lubricant supply circuit which supplies the lubricant from the source to the nozzles 14.
  • the lubricant supply circuit comprises at least one lubricant reservoir, a pump and a supply channel leading to the nozzles 14 .
  • it can further also include electronically controllable valves, filters, lubricant collectors, supply channels, possibly dosing pumps and the like can be used.
  • any design for pressurizing the lubricant delivery system can be used, so long as the delivery can be adjusted so that the lubricant can optionally be delivered or not delivered.
  • the specific design of the lubricant supply is clear to the expert and will not be discussed further.
  • the liquid lubricant in this invention is a technological liquid (emulsion) that ensures the thermal stability of working tools and the lubrication of the surface to facilitate the removal of the forgings.
  • Any liquid lubricant can be used for the purposes of the invention, but among the most commonly used are oil dispersions, graphite oils, emulsions, water dispersions or non-graphite synthetic solutions.
  • the forging press comprises a swivel arm 2 as a support segment, which is pivotably attached to the upper tool block 11 or ram.
  • a lubricating segment 1 is also attached to the pivoting arm 2 and has at least one nozzle 14 , the lubricating segment 1 preferably being arranged at the end of the pivoting arm 2 , possibly in the vicinity of the end of this pivoting arm 2 is spaced from the pivot anchor.
  • the pivoting anchorage 7 of the pivoting arm 2 to the ram 11 is realized by any connection, for example by means of an axle or a pin connected to the pivoting arm 2, which is housed in a bearing connected to the ram and comprising the upper tool block 11.
  • the pivot anchorage may be located elsewhere on the ram or on the upper tool block 11.
  • the swivel anchorage 7 can be released in a different way, which allows the swivel arms 2 to swivel.
  • the swivel arm 2 can swivel between an approximately horizontal position (non-use position of the lubricating segments 1 Fig. 2) and the basic position in which it encloses an angle of 10° to 90° with the upper tool block 11 (basic position of the lubricating segments 1 Fig. 1) .
  • the change in angle of the swivel arms 2 is essential for the invention and correct functioning.
  • the angle in the upper limit of 90 ° is limited so that the pivoting of the pivot arms 2 is ensured in the non-use position of the lubricating segments 1 in the right direction.
  • the lower angle limit of 10° is the minimum limit value to ensure the basic position of the lubricating segments 1, in which the lubricant supply is still possible at the desired angle.
  • the value of the ideal angle itself depends on the specific design of the working tool, the size of the machine, the design of the swivel arms 2 (possibly the support segment) and the location of the swivel mount 7 .
  • the forging press also includes a stop 12 which is connected to the upper tool block 11 and defines the maximum angle that the swivel arm 2 can enclose in relation to the upper tool block 11 .
  • the stop 12 can advantageously be adjustable, whereby an optional ideal basic position of the lubricating segments 1 can be achieved.
  • the stop may be a direct part of the pivot mount 7, with one stop being part of the pivot arm 2 or bolt or axis of the pivot arms 2 and the other stop being part of the pivot mount 7 bearing mount.
  • the swivel mount 7 thus forms a mechanical connection between the swivel arm 2 and the upper tool block 11 and thus also the ram, where during the movement of the ram upwards from the lowest height of the ram during the working stroke (from the non-use position of the lubricating segments 1 according to Fig 7) together with the ram also the swivel mount 7 moves translationally and the Pivot arm 2 performs a resultant movement due to gravity and the pivot mount, with respect to the reference system of the plunger it moves away from the non-use position of the lubricating segments 1 from the plunger.
  • FIG. 7 As shown successively in FIG. 7 via the representation in FIG. 6 to FIG.
  • the swivel arm 2 rotates in the first stroke phase in relation to the ram and the rotation is limited by touching the swivel arm 2 or the lubricating segment 1 with the lower working tool 4, on the next stroke the swiveling takes place until the moment when the rotation is prevented by the stop 12 will.
  • further rotation of the swing arm 2 can be prevented by a stop 12 before the lubricating segment 1 or swing arm 2 breaks contact with the lower working tool 4 (or with the upper surface 6 of the lower tool).
  • the opposite movement occurs, ie in the order of FIG. 5, then FIG. 6 to FIG.
  • the ram thus approaches the bed and the swing arm 2 performs a translational movement together with the ram until the lubricating segment 1 or swing arm 2 touches the upper surface 6 of the lower working tool.
  • the pivoting arm 2 then executes a resulting movement when the pivoting of the pivoting arm 2 relative to the ram is initiated. So it continues up to the working stroke of the ram when the swivel arm 2 is in the non-use position of the lubricating segments 1_befindet (Fig.7).
  • a prestressed spring is arranged between the swivel arm 2 and the ram or between the swivel arm 2 and the upper tool block 11 .
  • the spring 10 is prestressed in such a way that it acts in the direction towards the basic position of the lubricating segments 1. So it acts with a force on the swivel arm_2 in the direction in which it acts on the swivel arm 2 with a moment in the direction of rotation of the lubricating segment 1 toward the basic position of the lubricating segment 1 .
  • the spring 10 can be implemented as a compression spring (FIGS.
  • An alternative solution of the spring 10 can be a coil spring 10 which is on one side on Swivel arm 2 and on the other side is attached to the ram or upper tool block 11, if necessary it can be attached directly to the swivel mount 7.
  • Another variant of the spring 10 is the tension spring 10, which is located on the extended section 5 of the pivot arm 2, which is connected to the pivot arm 2, this embodiment is shown in Fig. 8.
  • the lubricating segment 1 can be designed as a single piece of material (e.g. workpiece, casting, etc.) with an internal lubricant guide, this lubricant guide being terminated with a nozzle 14 or nozzles 14 .
  • the lubricating segment 1 can be formed by the tubes conducting the lubricant and terminated with nozzles 14, possibly then as part of an external or internal frame on which the nozzles 14 are fixed, to which the lubricant is supplied by means of hoses.
  • the lubricating segment 1 performs the function of a part allowing the attachment of the nozzles 14 and connecting them to the arm 2, which is particularly important when using several nozzles 14 on one lubricating segment.
  • the lubricating segment 1 may have the shape of a rectangle, a circular ring section or another shape in plan, the shape of the lubricating segment 1 being designed for the approach of the nozzles 14 to the working tools.
  • this lubricating segment 1 or the end of the swivel arm 2 can have a bearing element 13 designed to reduce the friction between the lubricating segment 1 and the upper surface 6 of the lower working tool 4.
  • This support element 13 is designed as a roller bearing, pivot bolt or friction-reducing surface. 5 to 7 illustrate the design of the support element 13 in the form of a pivot pin.
  • the lubricating segment 1 can have nozzles 14 on its bottom and top, with the nozzles 14 on the top feeding the lubricant to the upper working tool 3 and the nozzles 14 on the bottom of the lubricating segment 1 to the lower working tool 4 .
  • the lubricant can be supplied to the lubricating segment 1 by hoses of the lubricating system that are attached to the swivel arm 2 .
  • the swivel arm 2 can be used for the supply of lubricant, which swivel arm can be designed hollow and, for example, as a tube.
  • several circuits of the lubricant supply can be used.
  • the lubricant can optionally be supplied only to the nozzles 14 on the top of the lubricating segment 1, to which nozzles 14 on the bottom of the lubricating segment 1 or to the nozzles on the same side of the lubricating segment 1 are directed with a different inclination in order to achieve an ideal incidence of the lubricant during the lubrication with the upward movement of the To ensure plunger, in which the pivot arms 2 pivot.
  • separate circuits of the lubricant supply can be used for several lubricating segments 1 if several swivel arms 2 are used.
  • the swing arm 2 can have a separate circuit for the nozzles 14 aimed at the upper work tool 3 and a separate circuit for the nozzles 14 aimed at the lower work tool 4.
  • the lubricant supply is controlled by the control unit of the lubricant supply system.
  • the control unit controls individual lubrication circuits and, if necessary, enables the timing of the start of lubrication and the duration of lubrication for individual circuits to be set.
  • the input to the controller may be the time or the position of the ram, these inputs are commonly available from the controllers of the forging machines, are known to those skilled in the art and will not be discussed further.
  • the first embodiment of the invention is the solution shown diagrammatically in Figs. Individual components of the forging machine that are not directly specified in this exemplary embodiment can be implemented as desired using the variants listed above.
  • Each of the arms 2 is attached to one side of the upper die block 11 .
  • At least a part of the plan projection of the upper working tool 3 is located between the axis of the swivel mount 7 of the swivel arm 2 and the lubricating segment 1 in the basic position of the lubricating segments 1 and in the non-use position of the lubricating segments 1 .
  • the lubricating segments are on the opposite side of the upper working tool ⁇ (or also the die of the lower working tool 4) than the swivel mount 7 of the swivel arm 2 to which the lubricating segment 1 is attached.
  • FIG. 4 shows a plan view of the swivel arms 2 with lubricating segments 1 viewed from above.
  • the arms have the shape of the letter "L" in plan view and circumvent the working space of the tool in the non-use position of the lubricating segments 1.
  • the shape of a parabola, hyperbola or any curve that does not pass through the working space of the working tool in the Non-use position of the lubricating segments 1_ passes through.
  • the swivel arms 2 are bent at the crossing point in order to avoid collisions when the lubricating segments 1 are not in use.
  • the lubricating segments have nozzles 14 on the bottom and top.
  • the forging machine has a lubricant supply circuit, and lubrication is performed after the forging is removed.
  • the lubrication is illustrated in FIG. 3 by showing the scattered lubricant 9 immediately after the lubrication is started.
  • the nozzles 14 are aligned in such a way that the flow of lubricant falls onto the upper working tool 3 and the lower working tool 4 .
  • the second embodiment is shown in FIGS. 5 to 7, where a swivel arm 2 is used which, in contrast to the first embodiment, has two lubricant supply circuits.
  • Individual components of the forging machine that are not directly specified in this exemplary embodiment can be implemented as desired using the variants listed above.
  • the lubricant is guided through the swivel arm 2, which is formed by two tubes.
  • the lubricating segment 1 has nozzles 14 on its top, which are part of the first circuit, and nozzles 14 on its bottom, which are part of the second circuit. It is therefore possible to start the lubrication before the forging is removed and to lubricate the upper working tool 3 already in the position shown in Fig.
  • the third embodiment is shown in FIG. 10, which is designed as the above embodiments, with the difference that the lubricating segment 1 is not arranged at the end of the swivel arm 2.
  • the support element 13 would therefore be arranged at the free end of the swivel arm 2 .
  • FIGS. 11 and 12 The fourth exemplary embodiment is shown in FIGS. 11 and 12, which is designed similarly to the exemplary embodiments mentioned above, with the support segment being designed differently in this exemplary embodiment.
  • the pivoting arms 2 are used as the support segment, with the first pivoting arm being pivotably connected to the upper tool block 11 and being pivotally connected to the second pivoting arm 2 at its second end.
  • the stop 12 is only used to limit the maximum pivoting of the first pivoting arm 2, to limit the pivoting of the second pivoting arm 2 and thus to define the basic position of the lubricating segment 1.
  • another stop is used, which is connected to the first pivoting arm 2 and is illustrated in FIGS. 11 and 12 in the vicinity of the pivoting seat of these pivoting arms 2.
  • both the lubricating segment 1 and the swivel mount 7 of the first swivel arm 2 are on the same side in relation to the working tools.
  • the forging machine is constructed in a similar manner except for the position of the swing arm 2.
  • This embodiment is shown in FIG.
  • the swing arm 2_ is pivotally connected to the lower working tool 4 or to the bed.
  • the swivel arm 2_ is thus arranged on the stationary part of the forging machine.
  • the movement of the lubricating segment 1 in the basic position relative to the working tool, which is the lower working tool 4 in this embodiment, is realized by the spring 10, the is mounted pretensioned and acts on the swivel arm 12 .
  • the lubricating segment 1 is brought into the non-use position by contact with the upper tool block 11 or with the ram.
  • the forging machine is implemented in a manner similar to the foregoing embodiments, with the supporting segment being implemented in a different manner.
  • the support segment to which the lubricating segment 1 is attached is designed as a telescopic arm 2 . Due to the contact of the lubricating segment 1 with the upper surface 6 of the lower tool, when the ram approaches, the telescopic arm 15 retracts and when the ram is spaced apart, the telescopic arm 15 is extended to the maximum extended position when the lubricating segment 1 is in the basic position .
  • flexible elements or dampers can be arranged in the telescoping arm 15, which prevent the unwanted vibrations of the lubricating segment 1.
  • the device described above can also be used for all forming machines that require a supply of lubricant to the work area and to the tools.
  • a supply of lubricant to the work area and to the tools.
  • the plastic presses, glass presses and the like can also be used for all forming machines that require a supply of lubricant to the work area and to the tools.
  • the plastic presses, glass presses and the like can also be used for all forming machines that require a supply of lubricant to the work area and to the tools.
  • Reference character list for example, for the plastic presses, glass presses and the like.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
PCT/CZ2021/000042 2020-09-08 2021-09-08 Schmiedemaschine Ceased WO2022053086A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202180054478.0A CN116056815A (zh) 2020-09-08 2021-09-08 锻造机
EP21799168.6A EP4221911B1 (de) 2020-09-08 2021-09-08 Schmiedemaschine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CZ2020499A CZ309052B6 (cs) 2020-09-08 2020-09-08 Kovací stroj s mazacím zařízením
CZPV2020-499 2020-09-08

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WO2022053086A1 true WO2022053086A1 (de) 2022-03-17

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JPS60166442U (ja) * 1984-04-09 1985-11-05 本田技研工業株式会社 鍛造金型への潤滑剤塗布装置
SU1555033A1 (ru) * 1988-05-07 1990-04-07 Мариупольский металлургический институт Обрезной штамп
JP2005014049A (ja) * 2003-06-26 2005-01-20 Sumitomo Heavy Industries Techno-Fort Co Ltd ノズル移動機構
CN104001847A (zh) * 2014-05-05 2014-08-27 北京机电研究所 温热锻造模具的自动冷却润滑系统
CN106825357A (zh) * 2017-04-10 2017-06-13 安徽工业大学 一种锻造模具的自动冷却润滑装置

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Publication number Priority date Publication date Assignee Title
GB2125324A (en) * 1982-08-13 1984-03-07 Eumuco Ag Fuer Maschinenbau Press with device for spraying the dies
JPS60166442U (ja) * 1984-04-09 1985-11-05 本田技研工業株式会社 鍛造金型への潤滑剤塗布装置
SU1555033A1 (ru) * 1988-05-07 1990-04-07 Мариупольский металлургический институт Обрезной штамп
JP2005014049A (ja) * 2003-06-26 2005-01-20 Sumitomo Heavy Industries Techno-Fort Co Ltd ノズル移動機構
CN104001847A (zh) * 2014-05-05 2014-08-27 北京机电研究所 温热锻造模具的自动冷却润滑系统
CN106825357A (zh) * 2017-04-10 2017-06-13 安徽工业大学 一种锻造模具的自动冷却润滑装置

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EP4221911B1 (de) 2025-01-08

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