CA1127821A - Press for molding materials having a pasty consistency, such as soap cakes - Google Patents
Press for molding materials having a pasty consistency, such as soap cakesInfo
- Publication number
- CA1127821A CA1127821A CA328,858A CA328858A CA1127821A CA 1127821 A CA1127821 A CA 1127821A CA 328858 A CA328858 A CA 328858A CA 1127821 A CA1127821 A CA 1127821A
- Authority
- CA
- Canada
- Prior art keywords
- rotating plate
- mold
- mold cavities
- rized
- characte
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D13/00—Making of soap or soap solutions in general; Apparatus therefor
- C11D13/14—Shaping
- C11D13/16—Shaping in moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
- B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
- B30B11/08—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space co-operating with moulds carried by a turntable
- B30B11/10—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space co-operating with moulds carried by a turntable intermittently rotated
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D13/00—Making of soap or soap solutions in general; Apparatus therefor
- C11D13/14—Shaping
- C11D13/18—Shaping by extrusion or pressing
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Detergent Compositions (AREA)
- Forging (AREA)
- Food-Manufacturing Devices (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A molding press for soap cakes is provided which comprises a vertical plate, rotating about a horizontal axis and having mold cavities on one or both the front surface thereof. The rotating plate is driven step by step in three different stations, i.e. a first station in which soap blanks are pressed into the form cavities, a second station in which the soap blanks are molded and a third station in which the molded soap cakes are withdrawn In order to anchor the soap blanks to the mold cavities through holes are provided interim-diate each pair of cavities in which the exceeding soap mate-rial is pushed by the operation of the pressing means.
A molding press for soap cakes is provided which comprises a vertical plate, rotating about a horizontal axis and having mold cavities on one or both the front surface thereof. The rotating plate is driven step by step in three different stations, i.e. a first station in which soap blanks are pressed into the form cavities, a second station in which the soap blanks are molded and a third station in which the molded soap cakes are withdrawn In order to anchor the soap blanks to the mold cavities through holes are provided interim-diate each pair of cavities in which the exceeding soap mate-rial is pushed by the operation of the pressing means.
Description
~ 2 ~ 2~
This invention relates to a molding press for molding materialæ having a paste-like consistency, hereinaf-ter referred to aæ "pasty materials", ~uch as soaps or the like in any shape, particularly a biconvex shape, for example pieces of ovoidal shape so-called "blow-molded" and also pieces of parallelepiped shape so-called "box~molded"0 The box-moulded piece~ can also be o~ any shape in cross-~ec-tion e (~ t~S
It iB known to mold prismatic pasty material ~ s by molding a blank within openings provided in a plate rotating about a horizontal axis and in which dies move provided with engraved front surfaces for stamping the pieces on the upper and lower ~urface~ thereof.
Dies in the openings accomplish the closing and opening stxokes of the mold rotatin~ about the horizontal axi9;
-thus, it iæ possible, by rotating st;ep by step the plate, to bring ~he dies provided thereon at different operating stations, suoh a~ blank feeding, blank pressing and molded piece with-drawing stations.
In the~e prior art pres~es which mold pri~matio~
shaped pieces of pasty materials it is obviou~ tha~ the piece readily remain~ in the molding box of the plate by inh~rent adhesion; problems arise when it is deæired to obtain non-e~ pC~r~ ieL;~s-prismatic shaped pieces or~ h~L~e-t-h~Pe~, eOgO convex shaped pieces.
The provision o~ horizontal plate pre~es9 which are more complex, give various practical difficultie~ Among these there is the e~fort of the manufac-turer to ~-t~ndardize the bas~c structure of the press ~o a~ it i~ capable to mold piece~ of any shape by interchan~ing the dies only.
It has been also proposed to provide preæses for molding pieces of different shape ha~ing the pasty material pieces to be molded arranged on a vertical rotating plate by :iLlZ~
providing an additional generally disc-shaped element having as the main function that of retaining on the rotating plate the material to be molded. It should be understood that it is not easy to retain the molded piece on the rotating plate in a desired position when the two dies forming the mold after the pasty material piece has been molded are to be simultaneously moved away for releasing the molded piece unles~ leaving attached to the piece perimetral flashes having such a thickness as to be readily visible on the finished piece, even if cut-away, Thi~ invention propo~es a solution to the problem of retaining the pasty material to be molded against mold ca-vities directly provided on the Pront surface o~ a vertical rotating plate, without the need to provide additional retaining means so as to obtain an improved molding pres~ as simple from the construction standpoint a~ that used for molding prismatic pieces, with the attendant advantages of operation reliabil~ty.
According to the invention a press for molding a material having a pasty consistenc~, particularly ~oap, of the type compri~ing a vertical plate rotating step by step about a horizontal a~i~ in order to bring mold cavities provided on one or bo-th front surfaces of the rotating plate ~t a first station in which pressing means are provided for pressing blanks of past~ material against the mold cavities, a second station in which movable dies are provided having mold cavities comple-mentary to the cavities of the rotating plate and oooperating with mold cavities of the rotating plate for molding the blanks, a third station in which means are provided to remove the molded pieces, is characteri~ed in that adjacent each mold cavity o~
the rotating plate through hole~ are provided in which the pa~ty material in excess flows during the operation of the blank pressing mean~ and the movable dies.
In order to better understand the ob~ects and the ~L~L2~;2~L
features of this invention several embodiment~ of the invention will be described by way of example only in connection with the accompanying drawings, wherein:
Fig. 1, i9 an elevation view partially cut-away ~howing a pre3s according to the invention, having a ~ingle set of mold cavities provided on the front surface of the rotating plate, Fig. 2, is a sectional view taken along the line II-II
in Fig~ l;
Fig. 3, i~ a view partially in elevation and partial~
ly in ~ection showing a pre~3 according to the invention having mold cavitie~ provided on both the front surfaces of the rotat-ing plate, during -the molding step;
Fig. 49 is a partial vertical section o~ the rotat-ing plate and the movable dies of F:ig. ~, during the molding 6tep in the ~econd 3 tation;
Fig. 5~ is a plan view partially cut-awa~ of the ro-tating plate of Fig. 3, during the withdrawing step of the molded piece~ at the third ~tation;
Flg. 69 i~ a plan view, paxtially cut-awa~ of the ro-tating plate provided with mold cavities on both the front surfaces thereof at the ~ir~t ~tation where pre~eing of the blanks again~t the mold cavities by the movable dies occurs;
Fig. 7, i~ a partial cros~-~ection of a withdrawing `
device and a~ociated pick-up mean~ for the molded plece~;
Fig. ~ a partial cross-~ection of a device for pres~lng the blanks against the mold cavitie3 of the rotating plate; and Fig. 99 iS a partial front view of the rotating plate provided wlth mold cavities on both the front surfaces.
~ his invention will be now described as appli0d to the production of ~oap-cake~9 it being however under~tood t~at it can be applied to the production of molded pieces of any pasty materials.
As can be seen, on the press structure 10 a rotating plate 11 i3 mounted, which is provided on a front surface (Figs~ 1 and 2) or on both the front sur~aces thereof (Figs.
3-9) with mold ca~itie~ 14.
The rotating plate 11 i~ supported on a center pin 13 which permits the rotating plate to be rotated by steps of 9oo.
It is seen from the Figso 2 and 9 that on the rotat-ing plate 11 four sets of four mold cavities 14 are provided having there-~between through hole~ 15.
For sake of clarity thrce typical positions of the foxm cavities on the rotating plate are indicated, which are ~hown in dotted lines at A, ~ and C and which corre~pond to three operations steps of the soap material.
~ he mold cavities provided at A are aligned with pre~sing mean~ 16 carried by a slide 12 in the case of the plate of Fig. 1 and 2 and by two opposite slides 12 in the case of the plate o~ Fig~. 3-9, acting in the direction to pre~s blanks 17 placed on belt conveyors 18 against the mold cavit$es 14. In Figs~ 2 and 9 there is diagrammaticall~ illustrated how soap blanks 17, compri~ed of an amount of soap material exceeding that nece3sary to the molding operation, are pres3ed against the mold cavities 14, partially filling them and how the exceed- -ing amount of material is forced within the through holes 15.
It should be appreciated that the pressing means 16 can be simple ~lat elements adapted to push the blanks 17 a~ainst the mold cavitle~ 1~ in the rotating plate 11 or el~e they can be shell-shaped elements 37 (Fig~ 5) the recesses of which have ~uch a shape and size as to per~orm a premolding of the bla~k3.
It should be also appreciated that the 30ap material ~1 ~ 7 ~3~
i~ not yet efficiently retained within the mold cavities 14 ~ince they have a convex wall and the plane tangent to every point~
thereof form~ an angle ~maller -than 90 with re~pect to the plane of the rota-ting plate 119 i.e the vertical plane.
on the contrary, the soap material being inserted into the through holes 15 anchors therein due to the form of the hole walls. ~he anchoring action can be enhanced by conically Q ~e~
~x~he through hole3 15 toward~ the opposite ~ront ~urface of the rotating plate. However, a 5imply cylindrical form of the holes 15 can provide a sufficient anchoring actiona In the case of a rotating plate provided with mold cavitie~ on a front surface only (eee ~ige. 1 and 2) the through hole~ 15 are po~itioned intermediate the mold cavi~ie~ and aligned thereto (~ig. 2), wherea~ i~ the ca~e of a rotating plate provided with mold oa~itie~ o~ bo-th the front surface~
(see ~igs. 3-9), ~aid through hole~ 15 are preferably positioned in an alternate arrangement.
More particularly, if on one ~ront surface of the rotating plate 11 there i8 the inlet of a through hole 15, thi~
hole 15 will extend inwardly the ~otating plate 11 wi-th its axi~ inclined to diverge from the plate axis and the outlet thereof will be on the oppo~ite ~ront face of the rotating plate at the periphery thereof~ while adjacent the above mention-ed inlet there wil] be the outlet of another through hole 15 9 whose inlet will be on the aboYe mentioned oppo~ite front surface - of the rotating plate 11, whereby the axi~ of two ad~acent through hole~ are inclined in opposite direction~.
Acoordingly~ on ~ front ~ur~ace of the plate 119 between a mold cavi-ty 14 and the ~ext one there will be the inlet o~ a through hole 15 aligned with the ca~itie~ and the outlet of the corresponding through hole 15 oxiginating ~rom the oppo~ite front ~urface of the plate 11, o~et to~ards the pe-~2782~L
riphex~ of ~aid plate, with the axis of the through holes 15being inclined so a~ to di~erge from the rotating plate axi~
in the direction from the inlet to the outlet of the holes in order to permit the exceeding ~o~p material to be discharged therefrom without interfering with the next pressing steps of the blanks.
once the operation of the pres~ing means 16 i~ tex-minated, a blank 17 is firmly anchored to each of the mold ca-vities 14 in the location A, ~ he rotating plate 11 i~ then rotatecl by 90 so asto bring the filled mold cavities 1~ into the location B. In this location the mold cavi-ties 14 lie in mating relationship with complementary movable dies 19 mounted to the slide or slide~ 12. These movable dies are ~own per ~e and will not be described in more details. Particularly9 it is to be noted that the movable dies have a wall portion 21 yieldably mounted by means of a ~pring 22 which aids the withdrawal therefrom o~
the ~oap molded material ~o that it remains within the mold cavities 14.
~ he purpose of the premolding obtained by means of the pressing mean~ 16 and 37 i~ to improve the ~inal molding opexation accomplished by the complementary dies 19. In this manner the molding operation is impro~ed in that a pos~ible air cushion which would pxevent the blanks 17 from adhering to the die~ during the pres~ing step will be eliminated both during the actuation of the pressing means 169 37 and during the actuation of the dies 19.
. It i~ also advantageous that the dies 19 ha~e a light ~ e~ e r~ t p~i~K~ depression 8 on the land between each o~ the~e die~
and th~ adjacent through holes 15; in this man~er a very thin flash 23 which can be formed circumferentially around the mold cavity by the exceeding material 17 ~ed to the ~inal molding operation will have a small area o~ greater thicknes~ 24 which will streng-then the bond between the material molded in the mold cavi~ies 14 and dies 19 and the material pushed in~o the through holes 15.
After the molding operation is ended and the movable dies 19 are retracted, the rotating plate 11 rotate~ by further 90 so as to bring the mold cavitie~ 14 in the location a (Figs. 2 and 5), in which location the mold cavities are facing pick-up sucker~ 25 carried by one or more fingers 26 pivotally con~ected at 27 to a 3tem 28 secured to the slide~ 12. Rollers 29 fi~ed to the finger 26 cooperate with guide means 30 so a~
to bring the suckers in a horizontal position when the suckers 25 are moved toward~ the rotating plate 11 (Fig~ 7) and in a vertical po~ition, ~hown in dotted ]ine, when the suokers 25 are moved away from the rotating plate 11.
Thus, a movement o~ the slide ox ~lides 12 towards the rotating plate 11 will bring the suckers 25 against the molded pieces and therefore a retraction of slide3 12 will with-draw the molded piece~ from the mold cavitie~ 1~ and move the molded piece~ thxough cutting means 31 which remove the ~lashe~
24 therefrom and finally bring them on conveyor~ 32 which tran~-port the molded pieces to storage.
It shoula be appreciated that for every alternati~g stroke o~ ~lides 12 the operations at the location A~ B and C
are sLmultaneou~ly per~ormed so a~ for each movement of slide~ -12 ~oap cakes are molded in the same n~ber as that of a mold cavity ~et~ i.e. four for each front surface of the rotating plate in the de~Qribed example.
~ he pres~ having mold cavities on one ~urface only ~ the rotating plate 11 is al~o provided with a crank mechanism 33 which moves pushing means 34 against the slide 12 ~o a~ to abut the rotating plate 11 during the actuation of the pres~ing mean~ 16 and the dies 19. On the contra~y, in the ca~e of presses having mold cavitie~ 14 on both the front ~urfaces o~
the rotating plate (Fig. 3) the pu~hing means 34 are substituted by other complementary dies 19.
~ he anchoring action performed by the exceeding material being pressed within the through hole~ 15 has proved ver~ efflclent. A9 the pre~sing operatio~s of the ~oap material are repeated, the exceeding material which i~ pushed into the through holes 15 under-goes a drawing e~fect and flow~ out from the opposite front ~urface of the rotating plate where it i~
collected by scraping means 35 and the ~la~hes still attached to the front surface~ of the rotating plate are scraped and collected by slide ~craping mean~ 36, together with the portions removed by the cutting mean~ 31.
~ he embodiment of the invention having a single set of mold ca~itie~ 14 on one front surface o~ the rotating plate and the embodiment having a double set of mold ca~ities on both -the front ~urfaces of the rotating plate are given by way o~
example only and ~t ~s apparent to those skilled in the art that various changes and modification~ can be made thereto without departing from the scope of the invention. More parti-cularly the ~umber and the shape of the mold cavitie~ in the ro-tating plate 11 can be changed and other pre~sing mean~ 16 than tho3e ~hown herein can be employed.
This invention relates to a molding press for molding materialæ having a paste-like consistency, hereinaf-ter referred to aæ "pasty materials", ~uch as soaps or the like in any shape, particularly a biconvex shape, for example pieces of ovoidal shape so-called "blow-molded" and also pieces of parallelepiped shape so-called "box~molded"0 The box-moulded piece~ can also be o~ any shape in cross-~ec-tion e (~ t~S
It iB known to mold prismatic pasty material ~ s by molding a blank within openings provided in a plate rotating about a horizontal axis and in which dies move provided with engraved front surfaces for stamping the pieces on the upper and lower ~urface~ thereof.
Dies in the openings accomplish the closing and opening stxokes of the mold rotatin~ about the horizontal axi9;
-thus, it iæ possible, by rotating st;ep by step the plate, to bring ~he dies provided thereon at different operating stations, suoh a~ blank feeding, blank pressing and molded piece with-drawing stations.
In the~e prior art pres~es which mold pri~matio~
shaped pieces of pasty materials it is obviou~ tha~ the piece readily remain~ in the molding box of the plate by inh~rent adhesion; problems arise when it is deæired to obtain non-e~ pC~r~ ieL;~s-prismatic shaped pieces or~ h~L~e-t-h~Pe~, eOgO convex shaped pieces.
The provision o~ horizontal plate pre~es9 which are more complex, give various practical difficultie~ Among these there is the e~fort of the manufac-turer to ~-t~ndardize the bas~c structure of the press ~o a~ it i~ capable to mold piece~ of any shape by interchan~ing the dies only.
It has been also proposed to provide preæses for molding pieces of different shape ha~ing the pasty material pieces to be molded arranged on a vertical rotating plate by :iLlZ~
providing an additional generally disc-shaped element having as the main function that of retaining on the rotating plate the material to be molded. It should be understood that it is not easy to retain the molded piece on the rotating plate in a desired position when the two dies forming the mold after the pasty material piece has been molded are to be simultaneously moved away for releasing the molded piece unles~ leaving attached to the piece perimetral flashes having such a thickness as to be readily visible on the finished piece, even if cut-away, Thi~ invention propo~es a solution to the problem of retaining the pasty material to be molded against mold ca-vities directly provided on the Pront surface o~ a vertical rotating plate, without the need to provide additional retaining means so as to obtain an improved molding pres~ as simple from the construction standpoint a~ that used for molding prismatic pieces, with the attendant advantages of operation reliabil~ty.
According to the invention a press for molding a material having a pasty consistenc~, particularly ~oap, of the type compri~ing a vertical plate rotating step by step about a horizontal a~i~ in order to bring mold cavities provided on one or bo-th front surfaces of the rotating plate ~t a first station in which pressing means are provided for pressing blanks of past~ material against the mold cavities, a second station in which movable dies are provided having mold cavities comple-mentary to the cavities of the rotating plate and oooperating with mold cavities of the rotating plate for molding the blanks, a third station in which means are provided to remove the molded pieces, is characteri~ed in that adjacent each mold cavity o~
the rotating plate through hole~ are provided in which the pa~ty material in excess flows during the operation of the blank pressing mean~ and the movable dies.
In order to better understand the ob~ects and the ~L~L2~;2~L
features of this invention several embodiment~ of the invention will be described by way of example only in connection with the accompanying drawings, wherein:
Fig. 1, i9 an elevation view partially cut-away ~howing a pre3s according to the invention, having a ~ingle set of mold cavities provided on the front surface of the rotating plate, Fig. 2, is a sectional view taken along the line II-II
in Fig~ l;
Fig. 3, i~ a view partially in elevation and partial~
ly in ~ection showing a pre~3 according to the invention having mold cavitie~ provided on both the front surfaces of the rotat-ing plate, during -the molding step;
Fig. 49 is a partial vertical section o~ the rotat-ing plate and the movable dies of F:ig. ~, during the molding 6tep in the ~econd 3 tation;
Fig. 5~ is a plan view partially cut-awa~ of the ro-tating plate of Fig. 3, during the withdrawing step of the molded piece~ at the third ~tation;
Flg. 69 i~ a plan view, paxtially cut-awa~ of the ro-tating plate provided with mold cavities on both the front surfaces thereof at the ~ir~t ~tation where pre~eing of the blanks again~t the mold cavities by the movable dies occurs;
Fig. 7, i~ a partial cros~-~ection of a withdrawing `
device and a~ociated pick-up mean~ for the molded plece~;
Fig. ~ a partial cross-~ection of a device for pres~lng the blanks against the mold cavitie3 of the rotating plate; and Fig. 99 iS a partial front view of the rotating plate provided wlth mold cavities on both the front surfaces.
~ his invention will be now described as appli0d to the production of ~oap-cake~9 it being however under~tood t~at it can be applied to the production of molded pieces of any pasty materials.
As can be seen, on the press structure 10 a rotating plate 11 i3 mounted, which is provided on a front surface (Figs~ 1 and 2) or on both the front sur~aces thereof (Figs.
3-9) with mold ca~itie~ 14.
The rotating plate 11 i~ supported on a center pin 13 which permits the rotating plate to be rotated by steps of 9oo.
It is seen from the Figso 2 and 9 that on the rotat-ing plate 11 four sets of four mold cavities 14 are provided having there-~between through hole~ 15.
For sake of clarity thrce typical positions of the foxm cavities on the rotating plate are indicated, which are ~hown in dotted lines at A, ~ and C and which corre~pond to three operations steps of the soap material.
~ he mold cavities provided at A are aligned with pre~sing mean~ 16 carried by a slide 12 in the case of the plate of Fig. 1 and 2 and by two opposite slides 12 in the case of the plate o~ Fig~. 3-9, acting in the direction to pre~s blanks 17 placed on belt conveyors 18 against the mold cavit$es 14. In Figs~ 2 and 9 there is diagrammaticall~ illustrated how soap blanks 17, compri~ed of an amount of soap material exceeding that nece3sary to the molding operation, are pres3ed against the mold cavities 14, partially filling them and how the exceed- -ing amount of material is forced within the through holes 15.
It should be appreciated that the pressing means 16 can be simple ~lat elements adapted to push the blanks 17 a~ainst the mold cavitle~ 1~ in the rotating plate 11 or el~e they can be shell-shaped elements 37 (Fig~ 5) the recesses of which have ~uch a shape and size as to per~orm a premolding of the bla~k3.
It should be also appreciated that the 30ap material ~1 ~ 7 ~3~
i~ not yet efficiently retained within the mold cavities 14 ~ince they have a convex wall and the plane tangent to every point~
thereof form~ an angle ~maller -than 90 with re~pect to the plane of the rota-ting plate 119 i.e the vertical plane.
on the contrary, the soap material being inserted into the through holes 15 anchors therein due to the form of the hole walls. ~he anchoring action can be enhanced by conically Q ~e~
~x~he through hole3 15 toward~ the opposite ~ront ~urface of the rotating plate. However, a 5imply cylindrical form of the holes 15 can provide a sufficient anchoring actiona In the case of a rotating plate provided with mold cavitie~ on a front surface only (eee ~ige. 1 and 2) the through hole~ 15 are po~itioned intermediate the mold cavi~ie~ and aligned thereto (~ig. 2), wherea~ i~ the ca~e of a rotating plate provided with mold oa~itie~ o~ bo-th the front surface~
(see ~igs. 3-9), ~aid through hole~ 15 are preferably positioned in an alternate arrangement.
More particularly, if on one ~ront surface of the rotating plate 11 there i8 the inlet of a through hole 15, thi~
hole 15 will extend inwardly the ~otating plate 11 wi-th its axi~ inclined to diverge from the plate axis and the outlet thereof will be on the oppo~ite ~ront face of the rotating plate at the periphery thereof~ while adjacent the above mention-ed inlet there wil] be the outlet of another through hole 15 9 whose inlet will be on the aboYe mentioned oppo~ite front surface - of the rotating plate 11, whereby the axi~ of two ad~acent through hole~ are inclined in opposite direction~.
Acoordingly~ on ~ front ~ur~ace of the plate 119 between a mold cavi-ty 14 and the ~ext one there will be the inlet o~ a through hole 15 aligned with the ca~itie~ and the outlet of the corresponding through hole 15 oxiginating ~rom the oppo~ite front ~urface of the plate 11, o~et to~ards the pe-~2782~L
riphex~ of ~aid plate, with the axis of the through holes 15being inclined so a~ to di~erge from the rotating plate axi~
in the direction from the inlet to the outlet of the holes in order to permit the exceeding ~o~p material to be discharged therefrom without interfering with the next pressing steps of the blanks.
once the operation of the pres~ing means 16 i~ tex-minated, a blank 17 is firmly anchored to each of the mold ca-vities 14 in the location A, ~ he rotating plate 11 i~ then rotatecl by 90 so asto bring the filled mold cavities 1~ into the location B. In this location the mold cavi-ties 14 lie in mating relationship with complementary movable dies 19 mounted to the slide or slide~ 12. These movable dies are ~own per ~e and will not be described in more details. Particularly9 it is to be noted that the movable dies have a wall portion 21 yieldably mounted by means of a ~pring 22 which aids the withdrawal therefrom o~
the ~oap molded material ~o that it remains within the mold cavities 14.
~ he purpose of the premolding obtained by means of the pressing mean~ 16 and 37 i~ to improve the ~inal molding opexation accomplished by the complementary dies 19. In this manner the molding operation is impro~ed in that a pos~ible air cushion which would pxevent the blanks 17 from adhering to the die~ during the pres~ing step will be eliminated both during the actuation of the pressing means 169 37 and during the actuation of the dies 19.
. It i~ also advantageous that the dies 19 ha~e a light ~ e~ e r~ t p~i~K~ depression 8 on the land between each o~ the~e die~
and th~ adjacent through holes 15; in this man~er a very thin flash 23 which can be formed circumferentially around the mold cavity by the exceeding material 17 ~ed to the ~inal molding operation will have a small area o~ greater thicknes~ 24 which will streng-then the bond between the material molded in the mold cavi~ies 14 and dies 19 and the material pushed in~o the through holes 15.
After the molding operation is ended and the movable dies 19 are retracted, the rotating plate 11 rotate~ by further 90 so as to bring the mold cavitie~ 14 in the location a (Figs. 2 and 5), in which location the mold cavities are facing pick-up sucker~ 25 carried by one or more fingers 26 pivotally con~ected at 27 to a 3tem 28 secured to the slide~ 12. Rollers 29 fi~ed to the finger 26 cooperate with guide means 30 so a~
to bring the suckers in a horizontal position when the suckers 25 are moved toward~ the rotating plate 11 (Fig~ 7) and in a vertical po~ition, ~hown in dotted ]ine, when the suokers 25 are moved away from the rotating plate 11.
Thus, a movement o~ the slide ox ~lides 12 towards the rotating plate 11 will bring the suckers 25 against the molded pieces and therefore a retraction of slide3 12 will with-draw the molded piece~ from the mold cavitie~ 1~ and move the molded piece~ thxough cutting means 31 which remove the ~lashe~
24 therefrom and finally bring them on conveyor~ 32 which tran~-port the molded pieces to storage.
It shoula be appreciated that for every alternati~g stroke o~ ~lides 12 the operations at the location A~ B and C
are sLmultaneou~ly per~ormed so a~ for each movement of slide~ -12 ~oap cakes are molded in the same n~ber as that of a mold cavity ~et~ i.e. four for each front surface of the rotating plate in the de~Qribed example.
~ he pres~ having mold cavities on one ~urface only ~ the rotating plate 11 is al~o provided with a crank mechanism 33 which moves pushing means 34 against the slide 12 ~o a~ to abut the rotating plate 11 during the actuation of the pres~ing mean~ 16 and the dies 19. On the contra~y, in the ca~e of presses having mold cavitie~ 14 on both the front ~urfaces o~
the rotating plate (Fig. 3) the pu~hing means 34 are substituted by other complementary dies 19.
~ he anchoring action performed by the exceeding material being pressed within the through hole~ 15 has proved ver~ efflclent. A9 the pre~sing operatio~s of the ~oap material are repeated, the exceeding material which i~ pushed into the through holes 15 under-goes a drawing e~fect and flow~ out from the opposite front ~urface of the rotating plate where it i~
collected by scraping means 35 and the ~la~hes still attached to the front surface~ of the rotating plate are scraped and collected by slide ~craping mean~ 36, together with the portions removed by the cutting mean~ 31.
~ he embodiment of the invention having a single set of mold ca~itie~ 14 on one front surface o~ the rotating plate and the embodiment having a double set of mold ca~ities on both -the front ~urfaces of the rotating plate are given by way o~
example only and ~t ~s apparent to those skilled in the art that various changes and modification~ can be made thereto without departing from the scope of the invention. More parti-cularly the ~umber and the shape of the mold cavitie~ in the ro-tating plate 11 can be changed and other pre~sing mean~ 16 than tho3e ~hown herein can be employed.
Claims (7)
1. A molding press for molding materials having a paste-like consistency such as soap or the like, of -the type comprising a vertical rotating plate having sets of mold cavi-ties on at least a front surface thereof and rotating about a horizontal axis step by step in order to bring said mold cavities into a first station in which pressing means are provided for pushing material blanks against said mold cavlties, into a second station in which movable dies are-provided which mold the material in cooperation with said mold cavities in the rotating plate and into a third station in which means are provided for withdrawing the molded material, characterized in that adjacent each mold cavity in the rotating plate through holes are provided in the rotating plate, in which the exceeding material is pushed during the actuation of said pressing means of the blanks and the movable dies.
2. A molding press according to claim 1, characte-rized in that said mold cavities are provided on both the front surfaces of the rotating plate so as to double the operative stations of the press
3, A molding press according to claim 1, characte-rized in that said through holes have a conical inner wall of a diameter increasing from the inlet to the outlet thereof.
4. A molding press according to claim 1, characte-rized in that said through holes are arranged along a center line between each pair of adjacent mold cavities.
5. A molding press according to claim 2, characte-rized in that said through holes are inclined with their axes diverging from the rotating plate axis from the inlet to the outlet and are arranged in alternate manner so that between each pair of adjacent mold cavities there are a through hole inlet aligned with the mold cavities and a through hole outlet offset towards the periphery of the rotating plate.
6. A molding press according to claim 1, characte-rized in that said pressing means are provided with recessed pads in order to accomplish a premolding operation.
7. A molding press according to claim 17 characte-rized in that each of said movable dies has a-peripheral de-pression opposite the through holes in the rotating plate.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT24063A/78 | 1978-05-31 | ||
| IT24063/78A IT1111183B (en) | 1978-05-31 | 1978-05-31 | PRINTER FOR SOAP AND TO FORM MATERIAL BEHAVIOR |
| IT20403A/79 | 1979-02-21 | ||
| IT2040379A IT1162503B (en) | 1979-02-21 | 1979-02-21 | Press for moulding cakes of soap and similar materials - has cavity overflow passages to anchor concave prod. from falling out |
| IT22611A/79 | 1979-05-11 | ||
| IT2261179A IT1166821B (en) | 1979-05-11 | 1979-05-11 | Press for moulding cakes of soap and similar materials - has cavity overflow passages to anchor concave prod. from falling out |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1127821A true CA1127821A (en) | 1982-07-20 |
Family
ID=27273061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA328,858A Expired CA1127821A (en) | 1978-05-31 | 1979-05-31 | Press for molding materials having a pasty consistency, such as soap cakes |
Country Status (8)
| Country | Link |
|---|---|
| AR (1) | AR216018A1 (en) |
| AT (1) | AT365230B (en) |
| BR (1) | BR7903524A (en) |
| CA (1) | CA1127821A (en) |
| CH (1) | CH639895A5 (en) |
| ES (1) | ES481011A1 (en) |
| FR (1) | FR2427387A1 (en) |
| GB (1) | GB2023057B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1131514B (en) * | 1980-06-06 | 1986-06-25 | Mazzoni G Mecc Costr | DEVILATOR DEVICE SUITABLE FOR PLACING PIECES COMING FROM A SINGLE LINE ON TWO PARALLEL LINES |
| IT1201145B (en) * | 1987-01-14 | 1989-01-27 | Mazzoni G Mecc Costr | MOLDING EQUIPMENT FOR FORMING PIECES OF SUBSTANCES OF PASTY CONSISTENCY SUCH AS SOAPS AND RELATED PROCEDURE |
| IT1223226B (en) * | 1987-12-04 | 1990-09-19 | Binacchi E C Srl | DEVICE FOR THE EXTRACTION OF PRODUCTS FROM A MOLD AND FOR THEIR ARRANGEMENT ON A CONVEYOR BELT, IN PARTICULAR FOR SOAP PRINTING MACHINES OR SIMILAR |
| CZ291717B6 (en) * | 1995-05-12 | 2003-05-14 | Unilever N. V. | Method of reducing amount of rework material during the process of manufacturing soap |
| GB2370529A (en) * | 2001-01-02 | 2002-07-03 | Mars Uk Ltd | An apparatus and method for producing cereal cakes |
| CN101367276B (en) * | 2008-05-19 | 2011-06-08 | 王斌 | Automatic feeding unit of stamping press |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1078814A (en) * | 1964-05-23 | 1967-08-09 | Constr Meccaniche G Mazzoni S | Improvements in or relating to machines for stamping tablets of substances having a pasty consistency |
| DE1692029C3 (en) * | 1964-05-23 | 1975-02-06 | Costruzioni Meccaniche G. Mazzoni S.P.A., Busto Arsizio, Varese (Italien) | Device on a machine for punching bars of soap and the like |
| US3357072A (en) * | 1964-10-14 | 1967-12-12 | Procter & Gamble | Relieved skirted die |
-
1979
- 1979-05-25 FR FR7913315A patent/FR2427387A1/en active Granted
- 1979-05-29 ES ES481011A patent/ES481011A1/en not_active Expired
- 1979-05-30 AT AT394879A patent/AT365230B/en not_active IP Right Cessation
- 1979-05-31 CH CH509879A patent/CH639895A5/en not_active IP Right Cessation
- 1979-05-31 AR AR27675179A patent/AR216018A1/en active
- 1979-05-31 GB GB7918915A patent/GB2023057B/en not_active Expired
- 1979-05-31 BR BR7903524A patent/BR7903524A/en unknown
- 1979-05-31 CA CA328,858A patent/CA1127821A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH639895A5 (en) | 1983-12-15 |
| BR7903524A (en) | 1980-03-04 |
| GB2023057B (en) | 1982-04-21 |
| ATA394879A (en) | 1981-05-15 |
| FR2427387A1 (en) | 1979-12-28 |
| GB2023057A (en) | 1979-12-28 |
| AR216018A1 (en) | 1979-11-15 |
| ES481011A1 (en) | 1980-04-01 |
| AT365230B (en) | 1981-12-28 |
| FR2427387B1 (en) | 1984-12-28 |
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Legal Events
| Date | Code | Title | Description |
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| MKEX | Expiry |