IT201800004652A1 - PRESS FOR MOLDING - Google Patents
PRESS FOR MOLDING Download PDFInfo
- Publication number
- IT201800004652A1 IT201800004652A1 IT102018000004652A IT201800004652A IT201800004652A1 IT 201800004652 A1 IT201800004652 A1 IT 201800004652A1 IT 102018000004652 A IT102018000004652 A IT 102018000004652A IT 201800004652 A IT201800004652 A IT 201800004652A IT 201800004652 A1 IT201800004652 A1 IT 201800004652A1
- Authority
- IT
- Italy
- Prior art keywords
- press
- sides
- seats
- shoulders
- holder
- Prior art date
Links
- 238000000465 moulding Methods 0.000 title claims description 6
- 239000000463 material Substances 0.000 claims description 7
- 239000004033 plastic Substances 0.000 claims description 7
- 230000005489 elastic deformation Effects 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/20—Opening, closing or clamping
- B29C33/26—Opening, closing or clamping by pivotal movement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/1742—Mounting of moulds; Mould supports
- B29C45/1744—Mould support platens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D35/00—Producing footwear
- B29D35/0009—Producing footwear by injection moulding; Apparatus therefor
- B29D35/0018—Moulds
- B29D35/0027—Last constructions; Mountings therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/03—Injection moulding apparatus
- B29C45/04—Injection moulding apparatus using movable moulds or mould halves
- B29C2045/0483—Injection moulding apparatus using movable moulds or mould halves pivotally mounted mould halves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/30—Mounting, exchanging or centering
- B29C33/305—Mounting of moulds or mould support plates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/48—Wearing apparel
- B29L2031/50—Footwear, e.g. shoes or parts thereof
Description
DESCRIZIONE DESCRIPTION
annessa a domanda di brevetto per INVENZIONE INDUSTRIALE avente per titolo attached to a patent application for INDUSTRIAL INVENTION having the title
PRESSA PER STAMPAGGIO PRESS FOR MOLDING
Il presente trovato concerne una pressa per stampaggio, di prodotti in materia plastica, in particolare fondi o suole di calzature. The present invention relates to a press for molding plastic products, in particular bottoms or soles of footwear.
Nell’ambito dello stampaggio di prodotti mediante iniezione od estrusione di materie plastiche, in particolare per la produzione di fondi di calzature, sono note delle presse che prevedono due fiancate fisse, parallele, tra le quali operano due piani portastampo, mobili, destinati a supportare semistampi che definiscono in combinazione tra loro la cavità di formatura del prodotto. In the field of molding of products by injection or extrusion of plastic materials, in particular for the production of shoe bottoms, presses are known which provide two fixed, parallel sides, between which two mobile mold-holder plates operate, intended to support half-molds that define the product forming cavity in combination with each other.
Uno dei due piani portastampo è vincolato alle fiancate in modo da risultare traslabile in guida con limitata corsa rispetto alle stesse. One of the two mold-holder surfaces is constrained to the sides in such a way as to be translatable in the guide with limited stroke with respect to them.
L'altro piano portastampo è vincolato invece alle fiancate in modo da risultare girevole, intorno ad un asse di rotazione fisso, trasversale alle fiancate, ruotando tra due posizioni limiti rispettivamente corrispondenti, una, all’introduzione della materia plastica nello stampo; e l'altra all'apertura comandata dello stampo per l'estrazione del prodotto finito. The other mold holder plane is instead constrained to the sides so as to be rotatable around a fixed rotation axis, transversal to the sides, rotating between two corresponding limit positions, one, when the plastic material is introduced into the mold; and the other to the controlled opening of the mold for the extraction of the finished product.
Nella tecnica nota, il bloccaggio del piano girevole nella posizione corrispondente all’introduzione della materia plastica è ottenuto mediante un vincolo di fissaggio temporaneo del piano portastampo alle fiancate, attuato mediante intervento di robusti steli che, alloggiati traslabilmente nel semistampo, fuoriescono dallo stesso dietro idoneo comando, andando ad impegnarsi in altrettanti corrispondenti fori, complementari, recati dalle fiancate, e viceversa. In the known technique, the locking of the revolving surface in the position corresponding to the introduction of the plastic material is obtained by means of a temporary fixing constraint of the mold-holder surface to the sides, carried out by means of the intervention of sturdy stems which, movably housed in the half-mold, protrude from the same behind suitable command, engaging in as many corresponding, complementary holes, carried by the sides, and vice versa.
Le fiancate della tecnica nota – sotto le intense e cicliche azioni legate alla pressione meccanica di chiusura dello stampo e/o alle pressioni di immissione della materia plastica - sono suscettibili di deformazioni elastiche piuttosto evidenti che, ripetendosi periodicamente ad ogni ciclo di stampaggio, portano il materiale costitutivo delle fiancate a raggiungere dopo un certo periodo d’uso il limite di fatica e, conseguentemente, a raggiungere la condizione di rottura. Da ciò conseguono gli inconvenienti di richiedere l'arresto della produzione e la sostituzione delle fiancate con conseguenti fermi macchina, necessità di interventi manutentivi, costi di riavvio della produzione e costi di sostituzione che incidono negativamente sulla economia del processo produttivo. The sides of the known art - under the intense and cyclical actions linked to the mechanical closing pressure of the mold and / or the injection pressures of the plastic material - are susceptible to rather evident elastic deformations which, repeating periodically at each molding cycle, bring the constituent material of the sides to reach the fatigue limit after a certain period of use and, consequently, to reach the breaking condition. This leads to the drawbacks of requiring production to be stopped and the sides to be replaced with consequent downtime, the need for maintenance interventions, production restart costs and replacement costs which negatively affect the economy of the production process.
Scopo del presente trovato è quello di ovviare a tali inconvenienti, in modo efficace, sicuro, semplice ed economico proponendo una soluzione in grado di rimuovere sin dall'origine le cause delle rotture sopraddette. The purpose of the present invention is to obviate these drawbacks in an effective, safe, simple and economical way by proposing a solution capable of removing the causes of the aforementioned breakages from the outset.
In accordo con il trovato tale risultato viene raggiunto da una pressa come definita in una qualsiasi delle allegate rivendicazioni. In accordance with the invention, this result is achieved by a press as defined in any one of the attached claims.
Le caratteristiche ed i vantaggi del trovato saranno resi evidenti con riferimento ad un esempio di realizzazione illustrato nelle allegate figure, in cui: The characteristics and advantages of the invention will be made clear with reference to an embodiment illustrated in the attached figures, in which:
- la figura 1 è una vista prospettica d'insieme di una pressa secondo il trovato rappresentata in una sua prima condizione operativa e con parti asportate per meglio evidenziarne delle altre; Figure 1 is an overall perspective view of a press according to the invention shown in a first operating condition thereof and with parts removed to better highlight the others;
- la figura 2 è una vista prospettica d'insieme della stessa pressa di figura 1, rappresentata in una seconda condizione operativa. Figure 2 is an overall perspective view of the same press of Figure 1, shown in a second operating condition.
Con riferimento alle figure degli uniti disegni, con (1) è globalmente indicata una pressa per stampaggio ad iniezione di manufatti in materia plastica. With reference to the figures of the accompanying drawings, the numeral (1) globally indicates a press for injection molding of articles in plastic material.
La pressa (1) comprende in particolare due fiancate (2), piane ed equidistanti, portate da una struttura (3) fissa, di sbalzo e longitudinalmente ad una prima direzione (x); ed una coppia di piani (4,5) portastampo, vincolati alle fiancate (2) ed orientati con giacitura trasversale ad esse. The press (1) comprises in particular two flanks (2), flat and equidistant, carried by a fixed cantilevered structure (3) and longitudinally to a first direction (x); and a pair of mold-holder planes (4,5), constrained to the sides (2) and oriented with a transversal arrangement thereto.
Un primo piano (4) portastampo è traslabile su azionamento di un relativo idoneo attuatore (12) lineare, longitudinalmente a detta prima direzione (x), il secondo piano (5) portastampo è girevole, intorno ad un perno (14) avente asse (5a) di rotazione longitudinale ad una seconda direzione (y), su azionamento di un relativo attuatore (13). A first plane (4) mold holder can be moved on actuation of a relative suitable linear actuator (12), longitudinally to said first direction (x), the second plane (5) mold holder is rotatable, around a pin (14) having axis ( 5a) of longitudinal rotation in a second direction (y), upon actuation of a relative actuator (13).
La figura 2 evidenzia, in particolare, che il secondo piano (5) portastampo include sedi (6) provviste di coppie di spalle (7) tra le quali estremità (8) delle fiancate (2) complementarmente conformate, transitano, inserendosi nelle sedi (6). Figure 2 shows, in particular, that the second plane (5) of the mold holder includes seats (6) provided with pairs of shoulders (7) between which the ends (8) of the complementarily shaped sides (2) pass, inserting into the seats ( 6).
Le coppie di spalle (7) sono congegnate in modo da riscontrare bilateralmente le estremità (8) delle fiancate (2), così da contrastarne inibendoli, o comunque limitandoli, almeno gli spostamenti di deformazione elastica diretti, longitudinalmente alla seconda direzione (y), ovvero diretti trasversalmente ai piani di giacitura delle fiancate (2) medesime. The pairs of shoulders (7) are designed so as to bilaterally meet the ends (8) of the sides (2), so as to counteract them by inhibiting them, or in any case limiting them, at least the direct elastic deformation displacements, longitudinally to the second direction (y), or directed transversely to the planes of the sides (2) themselves.
Più in particolare, le spalle (7) includono superfici (9a) piane parallele associabili a riscontro di corrispondenti superfici (9b) piane parallele delle fiancate (2). More particularly, the shoulders (7) include parallel flat surfaces (9a) which can be associated to abutment of corresponding parallel flat surfaces (9b) of the sides (2).
Le sedi (6), inoltre, hanno conformazione passante attraverso il corpo del secondo piano (5) portastampo, e, preferibilmente, presentano forma essenzialmente cilindrica con contorno di base di forma oblunga che integra le superfici (9a) piane parallele delle spalle (7) medesime. The seats (6), moreover, have a conformation passing through the body of the second plane (5) mold holder, and, preferably, have an essentially cylindrical shape with an oblong base contour which integrates the parallel flat surfaces (9a) of the shoulders (7 ) same.
Le sedi (6) sono attraversabili in direzione trasversale alle spalle (7) da steli (10) - preferibilmente cilindrici a contorno circolare - i quali sono traslabili longitudinalmente a sé stessi su idoneo comando di attuatore (11). The seats (6) can be crossed in a transverse direction behind the shoulders (7) by stems (10) - preferably cylindrical with a circular contour - which can be moved longitudinally to themselves on a suitable actuator control (11).
Gli steli (10) sono impegnabili su entrambe le spalle (7) di ciascuna delle sedi (6) con attraversamento delle interposte estremità (8) delle fiancate (2) alloggiate tra le spalle (7) medesime; estremità (8) delle fiancate (2) che, allo scopo, sono attraversate da fori (15) passanti dotati di contorno conformato complementarmente al contorno degli steli (10). The stems (10) can be engaged on both shoulders (7) of each of the seats (6) by crossing the interposed ends (8) of the sides (2) housed between the shoulders (7) themselves; ends (8) of the sides (2) which, for this purpose, are crossed by through holes (15) provided with a contour conformed complementarily to the contour of the stems (10).
La pressa (1) realizzata in conformità con il presente trovato si rivela particolarmente efficace e comoda da usarsi per produzioni di prodotti stampati di materia termoplastica, quale ad esempio fondi di calzature. The press (1) made in accordance with the present invention is particularly effective and convenient to be used for the production of molded products of thermoplastic material, such as for example shoe bottoms.
Il trovato così concepito raggiunge pienamente gli scopi ed è suscettibile di evidente applicazione industriale. Può essere altresì oggetto di numerose modifiche e varianti tutte rientranti nell'ambito delle rivendicazioni che seguono. Tutti i dettagli possono essere sostituiti, inoltre, da elementi tecnicamente equivalenti. The invention thus conceived fully achieves the aims and is susceptible of evident industrial application. It can also be subject to numerous modifications and variations, all of which fall within the scope of the following claims. Furthermore, all the details can be replaced by technically equivalent elements.
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT102018000004652A IT201800004652A1 (en) | 2018-04-18 | 2018-04-18 | PRESS FOR MOLDING |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT102018000004652A IT201800004652A1 (en) | 2018-04-18 | 2018-04-18 | PRESS FOR MOLDING |
Publications (1)
Publication Number | Publication Date |
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IT201800004652A1 true IT201800004652A1 (en) | 2019-10-18 |
Family
ID=62875223
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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IT102018000004652A IT201800004652A1 (en) | 2018-04-18 | 2018-04-18 | PRESS FOR MOLDING |
Country Status (1)
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IT (1) | IT201800004652A1 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITVI940063A1 (en) * | 1994-05-06 | 1995-11-06 | Guarda Corrado Dalla | PRESS |
EP0985506A1 (en) * | 1998-08-14 | 2000-03-15 | Detroy Holdings Limited | Moulding apparatus for plastic material products |
IT1402284B1 (en) * | 2010-10-05 | 2013-08-28 | Dalla Guarda | MACHINE FOR MAKING PRODUCTS IN THERMOPLASTIC AND / OR ELASTOMERIC MATERIALS IN GENERAL |
-
2018
- 2018-04-18 IT IT102018000004652A patent/IT201800004652A1/en unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITVI940063A1 (en) * | 1994-05-06 | 1995-11-06 | Guarda Corrado Dalla | PRESS |
EP0985506A1 (en) * | 1998-08-14 | 2000-03-15 | Detroy Holdings Limited | Moulding apparatus for plastic material products |
IT1402284B1 (en) * | 2010-10-05 | 2013-08-28 | Dalla Guarda | MACHINE FOR MAKING PRODUCTS IN THERMOPLASTIC AND / OR ELASTOMERIC MATERIALS IN GENERAL |
Non-Patent Citations (1)
Title |
---|
ANONYMOUS: "A8021/d1xd2 | Accessories | Clamping fixture | K | Product catalogue | HASCO Portal", 2 December 2018 (2018-12-02), XP055529563, Retrieved from the Internet <URL:https://www.hasco.com/en/K/Clamping-fixture/Accessories/p/A8021_d1xd2> [retrieved on 20181203] * |
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