US2323014A - Molding means - Google Patents

Description

June 3. w. DE LANEY 2,323,014

v MOLDING MEANS Filed Sept. 50, 1941 'Zj' y P 35 WHLL 0c; 05/. H/VEY INVENTOR ATTORNEYS Patented June 29, 1943 MOLDING MEANS Wallace De Laney, Ashland, Ohio, assignor to The Faultless Rubber Company, Ashland, Ohio, a

corporation of Ohio Application September 30, 1941, Serial No. 412,984

10 Claims. (CI. 18-35) This invention relates to molding means, more particularly to means for molding a container such as a fountain syringe, water bottle, ice cap, or the like, and the principal object of this invention is to provide new and improved molding means of the'character described.

Referring to the drawing accompanying this specification and forming a part of this application, there is shown, for purposes or illustration, one form which the invention may assume, and in this drawing:

Figure 1 is a perspective view oi a syringe bag iormedas a result oi molding in the improved molding apparatus, a portion of the bag being broken away to more clearly illustrate its construction, I j

Figure '2 is a transverse sectional view taken through a mold illustrating an embodiment of the invention, the view corresponding generally to the line 2-'-2 of Figure 3,

Figure 3 is a central longitudinal sectional view correspondinggenerally to the line 8-4 of Figure 2, Y I

Figure 4 is a fragmentary transverse sectional view corresponding generally to the line H of Figure 3, and

Figure 5 is a fragmentary sectional view of a detail, corresponding generally to the line H of Figure 3.,

Referring particularly to Figure 1, the syringe bag, indicated generally by the numeral i8, is formed of rubber or the like, and comprises substantially flat front and back walls ii and I2,

The embodiment illustrating the apparatus for molding the syringe bag it comprises a twopart mold and a core, the parts of the mold being indicated generally by numerals l8 and 28 respectively, and the core being indicated generally by the numeral 2i. The mold parts i9, 28 are respectively supported in mold sections 22, 28. As here shown, each mold section 22, 28, is formed with a longitudinal recess 24, and the respective mold part is held in position in its recess in any suitable manner. As best seen in Figure 3, each mold part it, 28 is meterably or a length substantially equal to the length of the mold sections 22, 23.

The mold sections 22, 28, may be held in proper alignment with respect to each other by means of pins 28, here shown as passing through apertures located at the corners of the mold sections. Cooperating pairs of lugs 28 may be having foldable side sections l8 formed by an I ii, i2, and the foldable side sections l8 merge with a tubular throat portion l5, and at the lower portions merge with a tubular outlet spout i8 adapted to be connected to a syringe tube (not shown) forming part or a complete syringe combination. The inner defining margin of each ioldable side section I8 is substantially in alignment with the exterior surface of the outlet spout II, and extends upwardly substantially in rectilinear manner, the upper part curving to the throat portion as indicated at ll. As seenin Figure l, the lower sides of the walls ll, I2 curve to the outlet spout ii. A handle i8 extends upwardly from the rear wall l2 and the adjacent side parts of the throat portion l5, and is adapted for the purpose of transporting or supporting the syringe bag Ill.

The syringe bag it, it will be appreciated, forms a compact, easily transportable article. When fluid is introduced into the bag through -the opening provided by the throat portion i5, the folds I! will extend outwardly to provide a receptacle or sumcient volume.

provided, one on each mold section, for the purpose of breaking" open the mold after the molding and vulcanizing operation has. been completed. 1

The mold parts have meeting faces 21, and extending inwardly, of these races, each mold part is formed with recess means 28 adapted to provide for a longitudinally complete portion of the syringe bag. Accordingly, that portion of each of the recess means forming the body portion of the syringe bag is substantially or W-shape (see Figure 2), and comprises a pair 0! recesses 29, each substantially of v-shape, the recesses communicating with each other as shown at 28, so that the crest 8i separating the recesses 29 terminates short of the respective meeting face 21. The recesses 28 are preferably of such inward extent that they form one-halt of the transverse extent of each of the ,front and back walls, together with the included Ioldable side section i3.

Each recess means 28 also is configured to correspond to the exterior shape of substantially one-half of the transverse extent of the throat portion i5, as best seen in Figure 4, and substantially one-half of the transverse extent of the 7 outlet spout ii. The crest SI of each mold part i8, 28, has its terminating margin contoured to form the curved portion ll of the side sections i2, and the mold recess means 28 are further contoured to provide the curved lower portion of the syringe bag. Thus, it will be seen that the cess 29 of the recess means 28. The core is also provided with a throat forming portion 3% and with curved walls St for forming the curved portion it of the foldable side sections i3. As seen in Figure 3, the throat forming portion 38 extends substantially to the corresponding extremity of the mold parts it, it, and at this point is provided with a handling rod 35. The other extremity of the core 2i terminates in a small diameter extension 36, adapted to closely fit, for positioning purposes, a corresponding circular recess 3'! formed as part of the recess means 28 in the mold parts 59, 2d. The circular recess 37 has an enlargement 88 cooperating with the core extension to provide a cavity for forming the outlet spout it.

As shown in the embodiment illustrated, it has been found preferable to form the handle by so configuring the recess means 28 of the mold parts it, 20 and the core 2i, that a recess 3% is formed,

'ofiset with respect to the longitudinal center line of the mold parts, as seen in Figure 4, so that the handle it is formed substantially as a continuation of the back wall E2 of the syringe bag it.

The handle recess 39 is formed by properly grooving the mold parts is, 20, and the core 2i. In this embodiment, each part i9, 28 is grooved to provide for substantially one-half of the iongitudinal extent of the handle it, and also substantially one-half of the thickness of the handle. The grooves in the parts i9, 20 form a complete groove (see Figures 3 and 5) providing for the complete longitudinal extent of the handle l8, and providing for substantially one-half its thickness. The core 2i is formed with a groove 4i, complementary to the complete groove 50, and providing for a complete longitudinal extent of the handle l8, and for substantially the other half of its thickness.

In molding the syringe bag W, the mold sections 22, 23 are separated, the core 2i is removed, and rubber stock is positioned to overlie the surfaces of the lower recess means 28 of the mold part 20, reference being to the positions of parts as shown in the drawing. The core 2i is then positioned so that its lowermost projections 32 press the stock into the lowermost recesses 29, and another piece of rubber stock is positioned to overlie the upwardly'extending projections 32 of the core 2 I. The upper mold section 22 is then fitted over the positioning pins 25, and the mold is closed. The mold may then be positioned in a suitable vulcanizing press, and pressure and steam applied in the usual manner. Each of the meeting faces 21 of the mold. parts i9, 20, is provided with a relief recess 42, into which excess stock may flow. After vulcanization, the mold may be broken open, as by applying a suitable tool between cooperating lugs 26. The core 2i with the syringe bag formed about it, may then be removed from the mold, and the bag may be stripped from the core, the operation being facilitated by extending outwardly the foldable side sections I3, stretching the throat portions i5, and removing the core 25.

It will be apparent that the mold means herein disclosed provides for edge molding of the syringe bag, that is, the sections of stock are joined at lines extending longitudinally along the relatively flat wide front and rear walls, as indicated at as in Figure 1. The invention provides comparatively inexpensive mold means for producing a syringe bag having the desirable foldable side sections, and eliminates the necessity of providing for movement of mold parts during the formation of the bag, thus eliminating costly maintenance and replacement expenditures.

Although the specification and the drawing show the mold means as forming a syringe bag, it will be appreciated that this disclosure comprises one embodiment of the invention, and that the invention is also adapted for forming water bottles and the like. Also, although the mold sections 22, 2-3 herein shown provide for only one set of mold parts it, it, and core 2i, these sections may be elongated transversely so that sets of such parts may be disposed in spacedapart side-by-side relation.

From the foregoing it will be apparent to those skilled in the art that I have accomplished at least the'principal object of my invention, and it also will be apparent to those skilled in the art that the embodiments herein described may be variously changed and modified, without departing from the spirit of the invention, and that the invention is capable of uses and has advantages not herein specifically described; hence it will be appreciated that the herein disclosed embodiments are illustrative only, and that my invention is not limited thereto.

I claim:

1. Apparatus for molding a container such as from its meeting face, said recess means being complementary to form a complete cavity configured to correspond to the complete exterior wall shape of the container, each of said recess means being constructed and arranged to form a portion of the container which is longitudinally complete and transversely includes parts of each of the opposed walls and the included foldable side section.

2. Apparatus for molding a container such as a syringe bag, water bottle, or the like, having relatively wide front and back walls joined together by foldable side sections, comprising: a two-part mold and a unitary core; said parts of said mold having meeting faces, each part having recess means extending inwardly from its meeting face, at least part of said recess means being substantially W-shaped, providing for one of the foldable side sections and substantially one-half of each front and back wall, said recesses being complementary with respect to each other to provide a complete cavity configured to correspond to the wall shape of the container; and said core being configured to correspond generally to the configuration of said complete cavity, and having oppositely extending pairs of substantially W-shaped projections fitting into respective recesses, the exterior surface of said core being spaced from the adjacent surface of said complete cavity to provide for the wall thickness of the container.

3. Apparatus for molding a container such as a syringe bag, water bottle, or the like, having opposed walls joined by foldable side sections, a tubular throat portion, a handle, and a tubular outlet spout, comprising: a two-part mold and a unitary core; said parts of said mold having meeting faces, and each part having recess means extending inwardly from its meeting face and configured to provide for'the exterior shape of substantially one-half of each of the opposed walls and an included side section, one-half of the throat portion and the tubular outlet spout,

and one-half of the longitudinal extent and onehalf of the thickness of the-handle, said recess means being complementary with respect to each other to provide a complete cavity; and core means, disposed within said complete cavity, configured and spaced to complement said complete cavity and provide for thickness of the walls, side sections, throat portion and handle of the container.

4. Apparatus for molding a container, such as a syringe bag, water bottle, or the like, having substantially opposed walls joined by foldable side sections, comprising: a two-part mold, said parts having meeting faces, each part having recess means extending inwardly from its meeting face and so configured that it provides a contour surface corresponding to the exterior surface of one of the foldable side sections and an'extending part of each of the opposed walls, said recess means being complementary with respect to each other to provide a complete cavity configured to correspond to the complete exterior wall shape of the container; and core means, positioned within said complete cavity, having projection means fitting into respective recess means but being spaced therefrom to provide for the wall thickness of the container.

5. Apparatus for molding a container such as a syringe bag, water bottle, or the like, having substantially opposed walls Joined by foldable side sections, comprising: a two-part mold, said parts having meeting faces, and each of said parts having a recess extending inwardly from its meeting face, said recesses being complementary to form a complete cavity configured to correspond to the complete exterior wall shape of the container, and each recess providing the exterior contour for a container portion which in transverse section includes a part of each of the opposed walls and the included foldable side section; unitary core means, positioned within said complete cavity, having an exterior surface configured to correspond generally to the shape of said complete cavity but spaced from the surface of said complete cavity to provide for wall thickness of the container; said mold and said core being relatively so constructed and arranged that stock interposed between the surface defining each of said recesses and a respective part of said core forms two container portions each in transverse section including one of said foldable side sections and the adjoining parts of said opposed walls.

6. Apparatus for molding a container such as a syringe bag, water bottle, or the like, having opposed walls Joined by foldable side sections, comprising: mold means and core means, for Joining two pieces of stock to form the container, said mold means and said core means being relatively so constructed and arranged that each piece of stock is shaped to form a portion of the container, each of said container portions in transverse section including one of said foldable side sections and the adjoining parts of said opposed walls.

7. Apparatus for molding a container such as a syringe bag, water bottle, or the like, having opposed walls Joined by foldable sid sections, comprising: mold means and core means, for joining two pieces of stock to form the container, said mold means and said core means being relatively so constructed and arranged that each piece of stock is shaped to form a portion of the container, each of said container portion being longitudinally complete and forming approximately transverse halves of said container, and each of said container portions in transverse section including one of said foldable side sections and the adjoining parts of said opposed walls.

8. Apparatus for molding a container, such as a syringe bag, water-bottle, or the like, having substantially opposed walls joined by foldable side sections, comprising: mold means and core means, for joining two pieces of stock to form the container, said mold means comprising two mold parts having meeting faces, each part having recess means extending inwardly from its meeting face and so configured that it provides a contour surface corresponding to the exterior surface of one of the foldable side sections and an extending part of each of the opposed walls, said recess means being complementary with respect to each other to provide a complete cavity configured to correspond to the complete exterior wall shape of the container; and core means being positioned within said complete cavity, and having projection means fitting into respective recess means but being spaced therefrom to provide for the wall thickness of the container.

9. Apparatus for making a bag having opposite re-entrant' wall portions, comprising: a unitary core means having a surface constructed and arranged to define the desired inside surface of the bag, said surface of said core means comprisin re-entrant surface portions on opposite sides of said core means; and two-part; mold means so constructed and arranged for cooperation with said core means that by causing said mold parts to approach each other around and in complementary relation to said core mean and around only two pieces of stock interposed respectively between said mold parts and said core means, said two pieces of stock are formed into a bag having opposite re-entrant wall portions and i having only two longitudinal seams which are of the bag, said surface of said core means comprising re-entrant surface portions on opposite sides or said core means; and mold means having two parts only, said parts having abuttable surfaces adapted to meet in a plane, said mold means being so constructed and arranged for cooperation with said core mean that when said abuttable surfaces are in abutment the cavitydefining surfaces of said mold parts define a composite surface spaced from and complementary to said core means, said plane being intermediate said opposite re-entrant surface portions.

WALLACE pr: LANEY.

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