EP2094874A1 - Cooling device for leather- splitting machines and leather- splitting machine provided with such a device - Google Patents

Cooling device for leather- splitting machines and leather- splitting machine provided with such a device

Info

Publication number
EP2094874A1
EP2094874A1 EP06832361A EP06832361A EP2094874A1 EP 2094874 A1 EP2094874 A1 EP 2094874A1 EP 06832361 A EP06832361 A EP 06832361A EP 06832361 A EP06832361 A EP 06832361A EP 2094874 A1 EP2094874 A1 EP 2094874A1
Authority
EP
European Patent Office
Prior art keywords
blade
thermal
station
machine
movable blade
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.)
Granted
Application number
EP06832361A
Other languages
German (de)
French (fr)
Other versions
EP2094874B1 (en
Inventor
Matteo Mascetti
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.)
Camoga SpA
Original Assignee
Camoga SpA
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 Camoga SpA filed Critical Camoga SpA
Publication of EP2094874A1 publication Critical patent/EP2094874A1/en
Application granted granted Critical
Publication of EP2094874B1 publication Critical patent/EP2094874B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B1/00—Manufacture of leather; Machines or devices therefor
    • C14B1/02—Fleshing, unhairing, samming, stretching-out, setting-out, shaving, splitting, or skiving skins, hides, or leather
    • C14B1/14—Fleshing, unhairing, samming, stretching-out, setting-out, shaving, splitting, or skiving skins, hides, or leather using tools cutting the skin in a plane substantially parallel to its surface
    • C14B1/18—Fleshing, unhairing, samming, stretching-out, setting-out, shaving, splitting, or skiving skins, hides, or leather using tools cutting the skin in a plane substantially parallel to its surface using band knives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/28—Splitting layers from work; Mutually separating layers by cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/08—Means for treating work or cutting member to facilitate cutting
    • B26D7/10—Means for treating work or cutting member to facilitate cutting by heating
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B1/00—Manufacture of leather; Machines or devices therefor
    • C14B1/02—Fleshing, unhairing, samming, stretching-out, setting-out, shaving, splitting, or skiving skins, hides, or leather
    • C14B1/14—Fleshing, unhairing, samming, stretching-out, setting-out, shaving, splitting, or skiving skins, hides, or leather using tools cutting the skin in a plane substantially parallel to its surface
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B17/00—Details of apparatus or machines for manufacturing or treating skins, hides, leather, or furs
    • C14B17/14—Auxiliary devices for leather-working machines, e.g. grinding devices for blading cylinders or dust-removal devices combined with the working machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/46—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having an endless band-knife or the like

Definitions

  • the present invention relates to a cooling device for leather-splitting machines (in the following currently referred to as splitting machines) , and to a splitting machine provided with such a cooling device.
  • splitting machines operate in such a manner as to obtain semifinished products of leather, hide and similar material, and more particularly operate by equalising or dividing a given "raw” piece of hide into two semifinished pieces of smaller thickness (or into two pieces one of which will be a "finished piece” and the other "waste material") .
  • separation of the hide piece is carried out by making the hide piece move forward towards a cutting station consisting of a belt blade, driven in transverse motion relative to the hide advancing direction, and operating in co- operation with a counter-blade (also known in the particular technical field as "thickness ruler") of a wedge-shaped or cylindrical section.
  • the splitting machine blade must always be perfectly aligned and must not suffer from oscillations and/or movements out of the cutting plane; to this end, the blade is usually caused to slide through two guides
  • blade guides usually retained by steel or cast iron plates which in turn rest on the blade itself, almost always by gravity.
  • the movable blade is then submitted, during the machine operation, to a continuous slight rubbing on the flywheels that drive it in motion, and it also continuously carries out a slight-rubbing motion in the blade guide (and in conclusion it is submitted to important sliding-friction stresses) .
  • the weight intensity of the blade guides resting on the movable blade, the type of material to be split (leather, thin hide, crocodile and so on) and the climatic conditions give rise to heating of the movable blade and the blade-guide plate assembly to such an extent that temperatures as high as more than 5O 0 C can be reached.
  • the driving speed of the movable blade and the above described friction/pressure values of the hide piece under working generate an important amount of heat that spreads within the movable blade and the blade guide, causing thermal expansions that are detrimental to the cut accuracy/precision.
  • a (fixed or movable) blade when heated to such a high degree, ' easily loses its cutting capacity and is subjected to triggering of structural cracks that can cause breaking of the blade itself.
  • the high temperatures can also damage the blade guides worsening the relative smoothness of same and therefore producing a quicker wear of the movable blade sliding therethrough.
  • the more the blade guides are subjected to high operating temperatures the quicker they are worn out (and also the higher their cost is) .
  • overheating of the cutting station may constitute a hinder also from the point of view of safety and comfort for the operator of the splitting machine, who must manually move the hide piece being worked close to the cutting station and can therefore suffer from the high heat (or can even get burnt, coming into contact with the blade, guide blade and thickness ruler) .
  • the plate region (and more particularly the upper plate region) is the one also acted upon by the operator; the high temperatures obviously do not facilitate the operator's manoeuvring and make the workplace conditions and microclimate worse.
  • the present invention aims at conceiving a cooling device enabling the temperature of the blade guide and/or the movable blade to be lowered without the accuracy of the cutting action and the operation of the assembly for actuation of the movable blade being impaired.
  • the present invention also aims at conceiving a device enabling an operator to move close to the machine more safely, without suffering from the effects of heat generated during leather working and without running the risk of being accidentally burnt.
  • the splitting machine in accordance with the invention is generally identified with reference numeral 1 and substantially comprises a cutting station conveniently dedicated to receiving a hide piece to be worked and to division of same into thinner semifinished products .
  • a cooling device for splitting machines which in turn comprises heat removing means operatively associable with at least said cutting station; within the scope of the invention, the heat removing means operates by conduction.
  • a cutting station of a splitting machine can be advantageously provided with a device enabling the heat generated during use of the machine to be "picked up" and dispersed in the surrounding environment, preferably where it has no influence on the . operator .
  • the heat-removal modalities are based on heat transportation by conduction, because the heat generated during movement of the blade and cutting of the hide is transmitted to solid elements that usually consist of materials promoting conduction; therefore, it will be possible to remove heat in a "direct” or “indirect” manner from the operating blade since the latter absorbs the generated heat and in turn transmits it to the pieces or parts on which it is mounted, or which it contacts.
  • direct removal it is intended a thermal flux directly moving away from the objects to be cooled (first from the blade but also from the blade guide and/or the support means, as detailed below) , which thermal flux takes place directly from the blade to the cooling device
  • the heat removing means can therefore either "directly" cool the blade
  • the heat removing means comprises a thermal-energy carrier (preferably in a liquid state) and a movement circuit adapted to contain this thermal -energy carrier.
  • the thermal-energy carrier is caused to flow through suitable driving means (a pump for example) and the parameters of this circulation (such as pressure, flow rate, residence time in suitable circuit areas, thermal features of the carrier itself) are established based on current requirements; from an operating point of view, the driving means is therefore interlocked with the movement circuit to move the thermal-energy carrier in a reversible manner between a thermal-energy picking-up station 2 and a dissipation station 3.
  • suitable driving means a pump for example
  • the parameters of this circulation such as pressure, flow rate, residence time in suitable circuit areas, thermal features of the carrier itself
  • the movement circuit is formally divided into a thermal-energy picking-up station 2 (that in accordance with the present invention can be positioned near and/or in close proximity with pieces or parts of the splitting machine) and a dissipation station 3 connected in circuit to the thermal-energy picking-up station 2 and adapted to eliminate the heat stored by the thermal-energy carrier.
  • the pieces or parts close to which the thermal-energy picking-up station 2 can be positioned/mounted can advantageously consist of a thickness ruler and/or a movable blade (that typically is adapted to co-operate with the just mentioned thickness ruler to split at least one hide piece) , and/or of one or more blade guides operatively active at least on the movable blade, and/or of suitable support means (flywheels, plates, blocks, .kinematic mechanisms, linkages or others) for the thickness ruler, blade guides and movable blade.
  • suitable support means for the thickness ruler, blade guides and movable blade.
  • the thermal-energy picking-up station 2 can be positioned near . and/or in close proximity with the pieces or parts of the splitting machine from which the heat generated during sliding/rubbing of the movable blade on the different blade guides (and/or during splitting of the hide pieces) will be eliminated (through heat exchange by conduction) , said parts or pieces in turn having received said heat by conduction.
  • thermal-energy picking-up stations 2 one of which is such positioned that it removes heat from the movable blade and/or the lower guide of the movable blade
  • both stations 2 can also pick up thermal energy from the supports of said pieces .
  • thermo-energy removing means could also utilise natural or forced convection and/or radiation to remove heat from the surfaces of the pieces or parts that are intended to be cooled.
  • the thermal -energy picking-up station 2 can be at least partly formed inside predetermined pieces or parts of the splitting machine; in particular the most appropriate "pieces or parts" to this end can preferably be the so-called upper or lower "plate assemblies" and/or one or more blade guides and/or the movable blade itself.
  • the just described architecture can be obtained through suitable channels formed within the mentioned pieces or parts; therefore the thermal-energy carrier will be caused to flow within these pieces or parts and the required conductive thermal exchange will be carried out .
  • this splitting machine 1 further comprises cooling means acting by heat conduction and operatively associated with the thickness ruler and/or one or more blade guides and/or the movable blade and/or the support means .
  • this cooling means acting by heat conduction defines a cooling device in accordance with the above description and/or with the following claims; in particular, the cooling means and/or the thermal-energy picking-up station 2 can be formed within at least one thickness ruler and/or one or more blade guides and/or the support means .
  • the dissipation station 3 is positioned internally of a machine body of the splitting machine 1; this can be the case when a machine is made expressly and a suitable inner space for the dissipation station 3 has been provided which can consist of a refrigerating unit and/or a heat exchanger or equivalent means .
  • the dissipation station 3 may also be positioned externally of said machine body of the splitting machine 1; this may occur for example when the cooling device is mounted on an already existing machine that therefore is not provided with appropriate inner spaces. In this case it will be obviously also necessary to take into account the suitable positioning of the thermal-energy picking-up station 2 that can for example consist of suitable pipe coils inside which the thermal -energy carrier flows and which are put into contact with the pieces or parts to be cooled, and also provided must be the suitable circuit for the carrier that through appropriate piping must reach the dissipation station 3.
  • the invention enables achievement of important advantages .
  • the particular construction architecture of the cooling device enables efficient removal, through conduction, of the excess heat both from the blade and from the machine pieces co-operating with the blade (such as blade guides and/or supports for the blade guides) .
  • Heat removal by conduction further enables the cooling device to be easily integrated into a splitting machine, even in the case of an already existing machine, of which it improves the performance both in terms of quality of the cutting operation and in terms of duration of the different pieces submitted to wear.
  • the reduction in temperature of the pieces appearing in the cutting station not only enables improvement of the machinery performance, but also the operators' work conditions are improved; in particular, the likelihood of burns on the operators are reduced and the microclimate around the machinery is improved, so that the operators' life becomes more comfortable and they are no longer subjected to too much perspiration.
  • the present invention enables semifinished products of better quality to be obtained both as regards accuracy in cutting and absence of contamination by the operator's sweat.
  • the present invention can be advantageously employed in different production fields in which operation of a splitting machine is required, such as the shoe sector, leather and hide sector, tan sector, and also in the furniture manufacturing field (sofas, chairs, armchairs and the like made of leather), and so on.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Sawing (AREA)
  • Details Of Cutting Devices (AREA)

Abstract

A splitting machine comprises a cutting station provided with a thickness ruler and a movable blade, blade guides active at least on the movable blade and support means for the fixed or movable blades and the blade guides; the machine further comprises cooling means to carry out cooling by heat conduction, which is operatively associated with the thickness ruler and/or the movable blade and/or the guides and/or the support means.

Description

COOLING DEVICE FOR LEATHER-SPLITTING MACHINES AND LEATHER-SPLITTING MACHINE PROVIDED WITH SUCH A DEVICE
D e s c r i p t i o n
The present invention relates to a cooling device for leather-splitting machines (in the following currently referred to as splitting machines) , and to a splitting machine provided with such a cooling device.
It is known that the so-called splitting machines operate in such a manner as to obtain semifinished products of leather, hide and similar material, and more particularly operate by equalising or dividing a given "raw" piece of hide into two semifinished pieces of smaller thickness (or into two pieces one of which will be a "finished piece" and the other "waste material") .
In operation, separation of the hide piece (in the thickness direction) is carried out by making the hide piece move forward towards a cutting station consisting of a belt blade, driven in transverse motion relative to the hide advancing direction, and operating in co- operation with a counter-blade (also known in the particular technical field as "thickness ruler") of a wedge-shaped or cylindrical section.
The splitting machine blade must always be perfectly aligned and must not suffer from oscillations and/or movements out of the cutting plane; to this end, the blade is usually caused to slide through two guides
(currently referred to as "blade guides") usually retained by steel or cast iron plates which in turn rest on the blade itself, almost always by gravity. The movable blade is then submitted, during the machine operation, to a continuous slight rubbing on the flywheels that drive it in motion, and it also continuously carries out a slight-rubbing motion in the blade guide (and in conclusion it is submitted to important sliding-friction stresses) .
In addition, in the same region where guiding of the movable blade occurs, there is also a contact with the piece of hide to be split; therefore a further region exists where a sliding friction is created between the cutting edge of the movable blade and the hide piece being worked; this friction is generated both in the transverse direction and in the longitudinal direction (due to the fact that the split hide goes on sliding on the two faces of the blade while keeping some pressure thereon) .
Generally, the weight intensity of the blade guides resting on the movable blade, the type of material to be split (leather, thin hide, crocodile and so on) and the climatic conditions, give rise to heating of the movable blade and the blade-guide plate assembly to such an extent that temperatures as high as more than 5O0C can be reached.
While the just described known art is relatively simple and has been tried out for long, it however has some drawbacks .
In fact, the driving speed of the movable blade and the above described friction/pressure values of the hide piece under working generate an important amount of heat that spreads within the movable blade and the blade guide, causing thermal expansions that are detrimental to the cut accuracy/precision.
In particular, it is to be pointed out that a (fixed or movable) blade, when heated to such a high degree, ' easily loses its cutting capacity and is subjected to triggering of structural cracks that can cause breaking of the blade itself.
An increase in the operating temperature of the blade and the thickness ruler results in a decay of the mechanical properties of the last-mentioned elements that in conclusion will have a reduced duration (and at the same time this involves an increase in the operating costs of the machinery) .
The high temperatures can also damage the blade guides worsening the relative smoothness of same and therefore producing a quicker wear of the movable blade sliding therethrough. In addition, the more the blade guides are subjected to high operating temperatures, the quicker they are worn out (and also the higher their cost is) .
Furthermore, overheating of the cutting station may constitute a hinder also from the point of view of safety and comfort for the operator of the splitting machine, who must manually move the hide piece being worked close to the cutting station and can therefore suffer from the high heat (or can even get burnt, coming into contact with the blade, guide blade and thickness ruler) .
On the other hand, it is to be noted that the plate region (and more particularly the upper plate region) is the one also acted upon by the operator; the high temperatures obviously do not facilitate the operator's manoeuvring and make the workplace conditions and microclimate worse.
It is apparent that the operator must in any case manipulate leather and hides (that are sometimes very valuable) which can be easily damaged' due to the high perspiration of the operator's hands; in other words, the generated heat can adversely affect the quality of the semifinished products.
It is an object of the present invention to provide a cooling device for a splitting machine and a splitting machine equipped with such a device that are able to overcome the mentioned drawbacks and that can be used for example in the shoe sector, the leather manufacturing sector, the tan sector and so on.
In particular, the present invention aims at conceiving a cooling device enabling the temperature of the blade guide and/or the movable blade to be lowered without the accuracy of the cutting action and the operation of the assembly for actuation of the movable blade being impaired.
The present invention also aims at conceiving a device enabling an operator to move close to the machine more safely, without suffering from the effects of heat generated during leather working and without running the risk of being accidentally burnt.
The foregoing and further aims are achieved by a cooling device for splitting machines and by a splitting machine equipped with such a device in accordance with the present invention, which have the features recited in the appended claims and hereinafter illustrated in an embodiment thereof given by way of non-limiting example with reference to the accompanying drawings, in which Figs. 1 and 2 show diagrammatic views of two possible embodiments of splitting machines including the device being the object of the invention.
With reference to the drawings, the splitting machine in accordance with the invention is generally identified with reference numeral 1 and substantially comprises a cutting station conveniently dedicated to receiving a hide piece to be worked and to division of same into thinner semifinished products .
Advantageously, a cooling device for splitting machines is present, which in turn comprises heat removing means operatively associable with at least said cutting station; within the scope of the invention, the heat removing means operates by conduction. In other words, a cutting station of a splitting machine can be advantageously provided with a device enabling the heat generated during use of the machine to be "picked up" and dispersed in the surrounding environment, preferably where it has no influence on the . operator .
The heat-removal modalities are based on heat transportation by conduction, because the heat generated during movement of the blade and cutting of the hide is transmitted to solid elements that usually consist of materials promoting conduction; therefore, it will be possible to remove heat in a "direct" or "indirect" manner from the operating blade since the latter absorbs the generated heat and in turn transmits it to the pieces or parts on which it is mounted, or which it contacts. Within the scope of the invention, by "direct removal" of heat it is intended a thermal flux directly moving away from the objects to be cooled (first from the blade but also from the blade guide and/or the support means, as detailed below) , which thermal flux takes place directly from the blade to the cooling device
(i.e. without intermediate thermal masses through which the thermal energy is caused to flow) .
On the other hand, still within the scope of the present invention by "indirect removal" of heat from the blade it is intended a thermal flux moving away from pieces or parts, which flux however passes through other pieces or parts located at an intermediate position.
Depending on current requirements, the heat removing means can therefore either "directly" cool the blade
(picking up heat and dissipating it without conduction paths concerning other pieces or parts of the machine) or "indirectly" cool the blade and/or the blade guide and/or the supports (picking up heat from a piece that is not directly the blade, but is in contact with the blade or in turn is in contact with one or more other pieces interposed between the blade and the heat removing means) .
In detail, it is possible to see that the heat removing means comprises a thermal-energy carrier (preferably in a liquid state) and a movement circuit adapted to contain this thermal -energy carrier.
The thermal-energy carrier is caused to flow through suitable driving means (a pump for example) and the parameters of this circulation (such as pressure, flow rate, residence time in suitable circuit areas, thermal features of the carrier itself) are established based on current requirements; from an operating point of view, the driving means is therefore interlocked with the movement circuit to move the thermal-energy carrier in a reversible manner between a thermal-energy picking-up station 2 and a dissipation station 3.
Conveniently, the movement circuit is formally divided into a thermal-energy picking-up station 2 (that in accordance with the present invention can be positioned near and/or in close proximity with pieces or parts of the splitting machine) and a dissipation station 3 connected in circuit to the thermal-energy picking-up station 2 and adapted to eliminate the heat stored by the thermal-energy carrier.
In more detail, the pieces or parts close to which the thermal-energy picking-up station 2 can be positioned/mounted can advantageously consist of a thickness ruler and/or a movable blade (that typically is adapted to co-operate with the just mentioned thickness ruler to split at least one hide piece) , and/or of one or more blade guides operatively active at least on the movable blade, and/or of suitable support means (flywheels, plates, blocks, .kinematic mechanisms, linkages or others) for the thickness ruler, blade guides and movable blade.
In other words, the thermal-energy picking-up station 2 can be positioned near .and/or in close proximity with the pieces or parts of the splitting machine from which the heat generated during sliding/rubbing of the movable blade on the different blade guides (and/or during splitting of the hide pieces) will be eliminated (through heat exchange by conduction) , said parts or pieces in turn having received said heat by conduction.
Referring to the drawings it is possible to see two thermal-energy picking-up stations 2, one of which is such positioned that it removes heat from the movable blade and/or the lower guide of the movable blade
(lower blade guide) , and the other is such positioned that it removes heat from the upper guide of the movable blade (upper blade guide) , and both stations 2 can also pick up thermal energy from the supports of said pieces .
Incidentally, it is to be noted that a heat exchange by conduction has been selected as the prominent embodiment of the present invention but in case of need, the thermal-energy removing means could also utilise natural or forced convection and/or radiation to remove heat from the surfaces of the pieces or parts that are intended to be cooled.
In order to ensure the suitable heat-elimination speed, and at the same time pick up heat in the most homogeneous manner, at least • the thermal -energy picking-up station 2 can be at least partly formed inside predetermined pieces or parts of the splitting machine; in particular the most appropriate "pieces or parts" to this end can preferably be the so-called upper or lower "plate assemblies" and/or one or more blade guides and/or the movable blade itself.
Structurally, the just described architecture can be obtained through suitable channels formed within the mentioned pieces or parts; therefore the thermal-energy carrier will be caused to flow within these pieces or parts and the required conductive thermal exchange will be carried out .
Conveniently, it is also an object of the present invention a splitting machine comprising a cutting station (provided with a thickness ruler and a movable blade adapted to co-operate with the thickness ruler to split at least one hide piece) , a predetermined number of blade guides suitably active at least on the movable blade, and support means for said thickness ruler, blade guide and movable blade; advantageously, this splitting machine 1 further comprises cooling means acting by heat conduction and operatively associated with the thickness ruler and/or one or more blade guides and/or the movable blade and/or the support means .
In accordance with the present invention, this cooling means acting by heat conduction defines a cooling device in accordance with the above description and/or with the following claims; in particular, the cooling means and/or the thermal-energy picking-up station 2 can be formed within at least one thickness ruler and/or one or more blade guides and/or the support means .
Depending on current requirements, the dissipation station 3 is positioned internally of a machine body of the splitting machine 1; this can be the case when a machine is made expressly and a suitable inner space for the dissipation station 3 has been provided which can consist of a refrigerating unit and/or a heat exchanger or equivalent means .
The dissipation station 3 may also be positioned externally of said machine body of the splitting machine 1; this may occur for example when the cooling device is mounted on an already existing machine that therefore is not provided with appropriate inner spaces. In this case it will be obviously also necessary to take into account the suitable positioning of the thermal-energy picking-up station 2 that can for example consist of suitable pipe coils inside which the thermal -energy carrier flows and which are put into contact with the pieces or parts to be cooled, and also provided must be the suitable circuit for the carrier that through appropriate piping must reach the dissipation station 3.
The invention enables achievement of important advantages .
First of all, it will be recognised that the particular construction architecture of the cooling device enables efficient removal, through conduction, of the excess heat both from the blade and from the machine pieces co-operating with the blade (such as blade guides and/or supports for the blade guides) .
Heat removal by conduction further enables the cooling device to be easily integrated into a splitting machine, even in the case of an already existing machine, of which it improves the performance both in terms of quality of the cutting operation and in terms of duration of the different pieces submitted to wear.
Secondly, it will be recognised that the reduction in temperature of the pieces appearing in the cutting station not only enables improvement of the machinery performance, but also the operators' work conditions are improved; in particular, the likelihood of burns on the operators are reduced and the microclimate around the machinery is improved, so that the operators' life becomes more comfortable and they are no longer subjected to too much perspiration.
Furthermore, the present invention enables semifinished products of better quality to be obtained both as regards accuracy in cutting and absence of contamination by the operator's sweat.
It will be also appreciated that the longer useful life of the different pieces of the splitting machine (as well as duration of the optimal mechanical and cutting performance of the blade and blade guides) enables the intervals for servicing/replacement of parts to be extended, which is advantageous in terms of low management costs .
Finally, the present invention can be advantageously employed in different production fields in which operation of a splitting machine is required, such as the shoe sector, leather and hide sector, tan sector, and also in the furniture manufacturing field (sofas, chairs, armchairs and the like made of leather), and so on.

Claims

C L A I M S
1. A cooling device for splitting machines, characterised in that it comprises heat removing means operatively associable at least with one cutting station of a splitting machine, said heat-removing means operating by conduction.
2. A device as claimed in claim 1, characterised in that said heat-removing means comprises:
- a thermal-energy carrier, preferably in a liquid state; and
- a movement circuit adapted to contain said thermal- energy carrier.
3. A device as claimed in claim 2, characterised in that said movement circuit comprises: a thermal-energy picking-up station (2) to be positioned near and/or in .close proximity with the pieces or parts of a splitting machine, and preferably to be positioned near and/or in close proximity with pieces or parts of said splitting machine, said pieces or parts being more preferably a thickness ruler, and/or a movable blade adapted to co-operate with said thickness ruler to split at least one hide piece, and/or at least one blade guide operatively active on said movable blade and/or support means for said blade guide or movable blade; and
- a dissipation station (3) connected in circuit to said thermal-energy picking-up station (2) and adapted to eliminate the heat stored by said thermal-energy carrier.
4. A device as claimed in claim 3, characterised in that it further comprises driving means interlocked with the movement circuit to move the thermal-energy- carrier in a reversible manner between the thermal- energy picking-up station (2) and the dissipation station (3) .
5. A_ device as claimed in anyone of the preceding claims, characterised in that at least the thermal- energy picking-up station (2) is at least partly obtained at the inside of predetermined pieces or parts of a splitting machine, said pieces or parts preferably being an upper or lower plate assembly, and/or one or more blade guides and/or a thickness' ruler and/or a movable blade.
6. A splitting machine, comprising:
- a cutting station equipped with a thickness ruler and a movable blade adapted to co-operate with said thickness ruler to split at least one hide piece,-
- a predetermined number of blade guides operatively active at least on said movable blade; and
- support means for said thickness ruler, blade guides and movable blade, characterised in that it further comprises cooling 'means carrying out cooling by heat conduction and operatively associated with the thickness ruler and/or the movable blade and/or the blade guides and/or said support means .
7. A machine as claimed in claim 6, characterised in that said means carrying out cooling by heat conduction defines a cooling device in accordance with anyone of the preceding claims 1 to 5.
8. A machine as claimed in claim 6 or 7, characterised in that the cooling means and/or the thermal-energy picking-up station (2) are formed inside at least the thickness ruler and/or one or more guide blades and/or the support means .
9. A machine as claimed in anyone of the preceding claims 6 to 8, characterised in that the dissipation station (3) is located internally of a machine body of the splitting machine (1) .
10. A machine as claimed in anyone of the preceding claims 6 to 8, characterised in that the dissipation station (3) is positioned externally of said machine body of the splitting machine (1) .
EP06832361A 2006-12-18 2006-12-18 Leather splitting machine provided with a cooling device Not-in-force EP2094874B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2006/000852 WO2008075383A1 (en) 2006-12-18 2006-12-18 Cooling device for leather- splitting machines and leather- splitting machine provided with such a device

Publications (2)

Publication Number Publication Date
EP2094874A1 true EP2094874A1 (en) 2009-09-02
EP2094874B1 EP2094874B1 (en) 2013-03-06

Family

ID=37988191

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06832361A Not-in-force EP2094874B1 (en) 2006-12-18 2006-12-18 Leather splitting machine provided with a cooling device

Country Status (4)

Country Link
EP (1) EP2094874B1 (en)
CN (1) CN101589159A (en)
TW (1) TW200827451A (en)
WO (1) WO2008075383A1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1714243A (en) 1927-06-11 1929-05-21 Robinson Francis Joseph Leather-glazing machine
DE1813498A1 (en) 1968-12-09 1970-06-25 Fortuna Werke Maschf Ag Splitting machine
IT1134351B (en) * 1980-11-19 1986-08-13 Rizzi & Co Spa Luigi LEATHER SPLIT MACHINE WITH CUTTING WIRE BELT BLADE IN FIXED POSITION FOR ANY CUTTING THICKNESS
EP0277122B1 (en) 1985-10-15 1992-04-01 D'angelo Transport Pty. Ltd. An apparatus and method for cutting rubber material
DE4425771A1 (en) * 1994-07-21 1996-01-25 Fortuna Werke Maschf Ag Blade and machine for cutting or slitting flat materials

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008075383A1 *

Also Published As

Publication number Publication date
TW200827451A (en) 2008-07-01
CN101589159A (en) 2009-11-25
EP2094874B1 (en) 2013-03-06
WO2008075383A1 (en) 2008-06-26

Similar Documents

Publication Publication Date Title
US2525712A (en) Supporting guide for machine tool elements
US7313903B2 (en) Cutter bar
JP2019198917A (en) Cutting method of ingot and wire saw
EP2310332B1 (en) Cutting and edge-coating removal head to be mounted on cutting benches of sheets of glass
EP2094874B1 (en) Leather splitting machine provided with a cooling device
CN104923861A (en) Precise electric heating slicing device
CN202225240U (en) Belt cutting device assembly for computer belt cutting machine
CN105077850A (en) Hot cutting machine
CA2437178C (en) Veneer slicing machine
US3130621A (en) Orbiting metal cutter
CN215845960U (en) Automatic tool lifting device of shaper with prolonged tool life
US20130092006A1 (en) Saw blade clamping device and the operation method thereof
CN208052038U (en) The groover of hot-water warming mattress processing
CN204658719U (en) A kind of stone material cnc profiling machine
US1946919A (en) Cutting machine
CN104647620A (en) Multi-wire sawing machine spindle system
CN112410478A (en) Cutting assembly of leather raw material
CN212754518U (en) Cloth cutting machine for shoemaking
CN210649747U (en) Grooving machine for screws
CN210390410U (en) Double-cutter point ironing device
CN108189120A (en) A kind of heat-cutting machine for making toy
CN212751648U (en) Double-end hot peeling quilt machine
CN220202290U (en) Edge cutting device for carpet production
CN209753043U (en) quick-frozen food crusher
CN103358342B (en) A kind of PVC profile Chipless cutting machine

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20090610

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

DAX Request for extension of the european patent (deleted)
17Q First examination report despatched

Effective date: 20100624

REG Reference to a national code

Ref country code: DE

Ref legal event code: R079

Ref document number: 602006034957

Country of ref document: DE

Free format text: PREVIOUS MAIN CLASS: C14B0001140000

Ipc: B26D0003280000

RIC1 Information provided on ipc code assigned before grant

Ipc: C14B 17/14 20060101ALI20120821BHEP

Ipc: B26D 7/10 20060101ALI20120821BHEP

Ipc: C14B 1/14 20060101ALI20120821BHEP

Ipc: B26D 3/28 20060101AFI20120821BHEP

Ipc: C14B 1/18 20060101ALI20120821BHEP

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: AT

Ref legal event code: REF

Ref document number: 599339

Country of ref document: AT

Kind code of ref document: T

Effective date: 20130315

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602006034957

Country of ref document: DE

Effective date: 20130425

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: CAMOGA S.P.A.

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 599339

Country of ref document: AT

Kind code of ref document: T

Effective date: 20130306

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130306

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130617

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130606

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130306

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130306

REG Reference to a national code

Ref country code: NL

Ref legal event code: VDEP

Effective date: 20130306

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130306

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130306

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130607

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130306

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130306

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130306

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130306

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130306

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130706

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130306

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130306

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130708

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130306

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130306

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130306

26N No opposition filed

Effective date: 20131209

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602006034957

Country of ref document: DE

Effective date: 20131209

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20140228

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20131227

Year of fee payment: 8

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20131218

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20131218

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130306

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20131218

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20131231

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20131231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20131218

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130306

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602006034957

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20061218

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20150831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150701

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20141231

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20181220

Year of fee payment: 13

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20191218