Holder of jaw of a takeout mechanism for glass products, in particular container glass
Field of the Invention
This invention relates to a holder of jaw of a takeout mechanism for glass products, in particular container glass, which is formed in the shape of an L with vertical and horizontal parts. The vertical part contains means for mounting on the takeout mechanism.
Background of the Invention CZ 298 356, corresponding to US 1998/199621 (25.1 1.1998), assigned to
Owens-Brockway Glass Container Inc. US, describes a takeout mechanism for removing of container glass from molds. The mechanism includes jaw assemblies, each of which is designed for removal of container glass. Each jaw assembly contains a pair of opposed arms, a suspended linkage means projecting in the direction of the container glass being removed, which is affixed to a cylindrical housing and a carrying shaft and a linkage means carried by the suspended member and pivotally mounted on the shaft for opening and closing the opposed arms of the jaws. The opposed arms of the jaws are carried by a linkage means and are activated by the linkage means. Each jaw assembly contains the first means for adjusting, comprising a bolt and nut assembly and a slot for adjustable mounting of the opposing arms of the jaws to the linkage means, facilitating adjustment of the offset between the opposed arms of the jaws and the suspended link in the direction of extraction of the containers. The second means of adjustment comprises a threaded member and an extension for adjusting the position of the opposing arms of the jaws in a plane extending perpendicular to the direction of extraction of the containers. Each of the opposed arms of the jaws comprises an L-shaped member, whereas each of the L- shaped members has a slot. The first means of adjustment comprises a bolt and nut assembly which passes transversely through the slot formed in the L-shaped member.
This is a conventional solution for engaging the members, which is established in the industry. A disadvantage is the laborious calibration of the members and the jaws of the takeout mechanism and occasional falling out of the members from the takeout mechanism. The means of adjustment comprising a bolt and nut is surpassed at the present time by the substitution of the nut with a thread in holder of the L-shaped member into which the bolt is screwed.
GB 2 126 211 assigned to United Glass PLC GB (26.7.1982) describes a glass container takeout mechanism. The takeout mechanism has an insert made of a thermosetting composite with a special filler, without asbestos fiber filler, and of thermosetting resin. Each of the said components of the composite is stable at temperatures of up to 200 °C. In Claim 17 is mentioned the L-shaped member, one arm of which is adapted to alignment with the insert on the takeout mechanism, and the second of which is formed for receiving the jaw member. The jaw member aligns with a depression on the second arm of the L-shaped jaw member.
Fig. 1 of the said invention describes the L-shaped jaw member, where there is on the vertical part a yoke supplied with a depression for engaging the takeout mechanism. The vertical part of the L-shaped member is supplied on the side adjacent to the takeout mechanism with a side-mounted guide. The L-shaped jaw member is reinforced on both outer sides with side walls. The horizontal part of the L- shaped jaw member has a depression aligned for insertion of the insert. The depression has a shape facilitating insertion of the insert, with an outer semicircular perimeter. There are openings situated on both sides of the horizontal part of the L- shaped jaw member, one above the other, for the insertion of pegs serving to secure the insert against falling out. The inside, circular opening of the insert is fabricated according to the shape of the mouth of the bottle to be removed. The inserts are supplied, on the outer perimeter in the dividing line, with a depression for a peg which is inserted into openings in the jaw member, which serves to secure the insert against falling out following insertion of the insert into the L-shaped jaw member. A disadvantage of this solution is the laborious replacement of the inserts following their mechanical deterioration or in the case of a change in assortment. Precise calibration is relatively laborious. In view of the relatively compact and robust L-shaped jaw member, including its lateral reinforcement, a greater mass may be expected. With regard to the securing of the insert against falling out, there may be a certain risk of instability and falling out of the securing pegs during operation and during long-term use at operating temperatures.
US 4,955,896 (31.8.1989), assigned to Union Oil Company of California US, describes the takeout jaws. Takeout jaws in bottle forming machines have an outside semicircular shape and contain a spring clip for firm fixing of an insert of non-metallic contact material in the recess of the takeout mechanism body. The assembly of the takeout jaws for gripping glass bottles comprises: (a) an arcuate base comprising a wall member and a radially inward extending, substantially parallel, top and bottom shelf members, said shelf members and wall defining a recess; (b) a semicircular bottle contacting body located in the said recess and having a radially inward extending edge for contacting said bottles, said body having a depression adjacent to the rear edge of the body; (c) means for locating the said body in the said recess comprising a flat spring attached to an outer surface of the wall member, extending through an opening in the wall and having an end for engaging in the depression of the body. The arcuate base is fabricated from steel. The semicircular body is fabricated from material containing graphite.
A disadvantage of this solution is that following heating of the spring during operation, falling out of the body may occur more frequently. Another disadvantage is the higher cost of the body in view of its complicated shape. Another disadvantage consists of the small axial play between the body and the recess of the arcuate base.
Summary of the Invention
The stated disadvantages are removed or significantly reduced by the jaw holder of a takeout mechanism for glass products, in particular container glass, which is formed in the shape of an L with vertical and horizontal parts, where the vertical part contains a means for mounting on the takeout mechanism according to the present invention. The subject of the present invention consists of the fact that each holder is supplied on its vertical part with a depression on the upper end for engaging the holder on the takeout mechanism, and stops on the side facing the glass product removal for rapid, precise calibration, with the top surface of the stop located below the level of the depression and above the securing column. Each holder is supplied with a securing column for locking of the insert, the top surface of which is at a level below the top surface of the stops, and the bottom surface extends to the level of the bottom surface of the top plate of the horizontal part. The holder is supplied in its horizontal part with a depression adapted for insertion of the insert in a substantially corresponding outer shape. The depression is formed between the top and bottom plates between which there are side walls. Both plates are, on the side facing the glass product to be removed, formed into a semicircular cut-out. Each insert is supplied with a securing opening for insertion of the securing peg into the securing column.
The main advantage of the present invention is that it facilitates the use of inserts with very simple manufacturing, construction and economical design. The construction solution facilitates very simple, rapid replacement of inserts and their safe securing against falling out of the holders. The depression serves for engaging the holder on the takeout mechanism. With the aid of optimum arrangement of the stops, precise positioning of the jaw holder in the takeout mechanism is ensured. The securing column and its optimum placement represent the most important construction element of the holder according to the present invention. The securing column is located on the side facing the bottle being removed. The securing column according to the present invention ensures the precise, safe positioning of the insert in the holder and simultaneously secures the insert against falling out of the holder. The recess delineated between the two plates serves as the space for insertion of the insert. By means of its dimensions, the recess ensures the required axial play of the insert in the holder. On the basis of long-term operational trials, there should be a play of 0.3 - 0.8 mm between the recess and the insert for the required axial play. The holder according to the present invention with the securing column is suitable for the majority of thus far manufactured and used inserts, with the requirement, however, that the insert must be additionally supplied with one securing opening.
For a smaller diameter of mouth of the glass container, especially glass bottles, it is advantageous when the substantially vertical part of the L-shaped jaw holder has a rear side, facing away from the glass container to be removed, which is vertical and integral throughout its entire surface. In this case, it is structurally advantageous when the securing column is situated between the two stops, which takes up little space and thus simplifies the construction and facilitates securing of the insert in one place. The insert can then have a standard size and the holder is thus usable for the majority of existing inserts.
For a larger diameter of mouth of the glass bottle, especially glass bottles for ketchup, juices etc. or for jars for preserves, it is advantageous when the vertical part has a rear side, facing away from the glass container to be removed, canted in the middle part, facing away from the glass container to be removed, and the attached base is vertical, so that the horizontal part of the holder is also extended to the extent of the middle, canted part.
It is advantageous when the securing column is hollow, the securing peg is located in it surrounded by a spring and there is a bolt above the peg. A primary advantage of this construction solution is that the securing column is placed from the inner side of the jaws, therefore permitting use also of standard, conventionally used inserts and their perfect securing against falling during operation.
It is also advantageous when the vertical part of the holder is supplied with weight-reducing holes to reduce the weight of the holders by reducing their mass.
It is also advantageous when the semicircular bottle removing cut-out is supplied with another smaller, semicircular cut-out situated below the securing column for easy insertion of the securing peg during replacement of the insert due to a change in the assortment of container glass, or during the insertion of a new insert into a new jaw or during replacement of a deteriorated or damaged insert.
It is also advantageous when the vertical part of the holder, in the case of the vertical rear side of the holder, is below the depression and above the stop, on the side facing the glass product being removed, a vertical neck is situated for easier manufacture of the interior space of the securing column. It is also advantageous when there is an opening situated in the rear wall of the holder, at the level of the recess, for pushing the insert out of the holder;
Brief description of the drawings
The invention is described in detail in sample examples which are clarified with the aid of the accompanying schematic drawings, in which:
Fig. 1 is an axonometric projection of the exploded jaw holder with the insert removed,
Fig. 2 is a front elevation of the holder with the inserted insert from Fig. 1
Fig. 3 is a vertical side elevation in cross-section at plane A-A in Fig. 2,
Fig. 4 is an axonometric projection of the exploded alternative jaw holder with the insert removed, Fig. 5 is a front elevation of the alternative holder with the inserted insert from Fig. 4, Fig. 6 is a vertical cross-section at plane B-B in Fig. 5 and Fig. 7 is a vertical cross-section at plane C-C in Fig. 5.
Examples of the Invention
Example 1
(Figs. 1 , 2, 3)
Jaw of glass product takeout mechanism of glass products, in particular container glass; this specific example of the design relates to glass bottles.
A glassmaking machine for the manufacture of glass bottles has a part which removes the already formed bottles. Each takeout mechanism comprises two identical, opposing, mirrored holders 1 and opposing, mirrored inserts 2^ as depicted in Fig. 1.
In the specific sample and unlimited design, Fig. 1 shows schematically, in axonometric projection, one exploded holder 1 and one insert 2, which have axial symmetry along the vertical axis. This holder 1 with the inserted insert 2 is shown in front elevation, facing the glass bottle being removed, in Fig. 2 and its vertical cross- section at plane A-A in the vertical axis of the holder and the insert is shown in Fig. 3.
Each holder is fabricated in an L-shape, with a vertical part 3 and a horizontal part 4, as can be seen in Figs. 1 and 3.
The vertical part 3 comprises in the specific sample design a top, clamping part 3a, a truncated part 3b, a base 3c and a rear wall 3d.
The top, clamping part 3a is the narrowest part of the vertical part 3. The top, clamping part 3a of the vertical part 3 widens at the bottom into the truncated part 3b, which is a continuation of the cuboidal base 3c. From the side elevation, the vertical part 3 is, as can be seen in Fig. 3 , integrally vertical throughout its height, so the rear side 3d of holder 1 is on one, integral plane throughout its height. The cuboidal base 3c of the vertical part 3 continues into the horizontal part 4, which has a breadth corresponding to that of the base 3c of the vertical part 3^ as can be seen in Figs. 1 and 3.
The horizontal part 4 is supplied with a semicircular cut-out 4a for gripping and removing container glass, e.g. by the neck of the glass bottle.
The vertical part 3 of holder 1_ is supplied on the top, clamping part 3a on the axis of holder 1 with a vertical open depression 5 for attaching to the takeout mechanism. Depression 5, in the specific sample design is U-shaped. Depression 5 is created between the two fastening ends of the top, clamping part 3a The bottom excision of depression 5 does not extend to the feet of the top, clamping part 3a, but is situated above the two stops 6 for rapid, precise calibration. Both stops 6 are located on the side facing the bottle being removed, below the fastening end of the top, clamping part 3a. The vertical part 3 of the holder 1_ may be supplied below the stops 6 with weight-reducing holes 7, in this specific sample design by means of two weight-reducing holes 7 in the truncated part 3b,
The horizontal part 4 comprises the top plate 8 and the bottom plate 9, joined by the side walls 18. Both plates 8 and 9, together with the side walls 18 and the bottle removal cut-out 4a, thus delineate the recess space 0 for insertion of the insert 2. In this specific sample design both plates 8 and 9 have a rectangular shape and together with the side walls 18 they constitute a cuboidal unit, which is breached and open on the side facing the bottle being removed by means of the bottle removal semicircular cut-out 4a for removal by of the glass bottle by the neck.
In the vertical axis of holder 1 is situated the hollow securing column H of the securing mechanism for engaging the insert 2 in the recess 10 of holder The securing column V\_ is located below the depression 5 facing the bottle being removed. The upper surface of the securing column V\_ is always located at a level below the top surface of the stops 6. The bottom surface of the securing column V\_ reaches to the level of the bottom surface of the top plate 8, as can be seen in Fig.1.
Fig. 2 depicts a vertical cross-section at plane A-A of holder 1_ with the inserted, secured insert 2 from Fig. . Visible in this depiction is the opening .12 for pushing out the insert 2 from the holder 1. Opening 12 is situated on the rear side 3d of holder 1 at the level of the recess 10.
In the securing column Vj_ is located, the securing mechanism for fastening the insert 2 in the holder 1_. The securing mechanism of the securing column V\_ contains the securing peg 13 surrounded by the spring 14 and above the peg 13 is situated the bolt 15, as shown in Fig. 3. The securing peg 13 is compressed by the spring 14 and the spring 14 and the peg 13 are held in place by the bolt 1J5. The bottom part of the securing peg 1_3 extends upon compression into the securing opening _16_ in the insert 2.
In the vertical part 3, under the fastening cut-out of depression 5 and above the stop 6, a neck 17 may be included for easier manufacture of the interior space of the securing column 1 1
Holder 1 of the jaws may be fabricated either from cast metal or from steel.
Insert 2 is fabricated from any material suitable for contact with hot glass of a temperature of approx. 600 °C, e.g. graphite composites, bronze etc.
The jaw of the glass bottle takeout mechanism operates as follows:
By means of batch, continuous, automated mechanized production on serial "gob" forming machines, container glass, e.g. glass bottles are produced. The formed glass bottle is transferred from the final glass mold to a deadplate or a conveyor belt by means of the takeout jaws. The open takeout jaws then move back over the next glass bottle in the final glass forming mold of the forming machine. During takeout of the glass container, the insert 2 must always be inserted in the recess 10 of holder 1. Example 2
(Figs. 4, 5, 6, 7)
An alternative design of one holder 100 is shown in Fig. 4 in axonometric projection, with the exploded alternative jaw holder 100 with the insert 2 removed. This alternative jaw holder 100 is shown in front elevation assembled in Fig. 5. The alternative jaw holder 100 is shown in Fig. 6 in a vertical cross-section at plane B-B from Fig. 5 and in Fig. 7 in a vertical cross-section at plane C-C from Fig. 5.
Each alternative jaw holder 100 is formed substantially L-shaped from a side elevation, as shown in Figs. 6 and 7. The design is identical to the previous one, except for a different design and arrangement of the alternative stop 60, the alternative securing column 1 10, the alternative truncated part 30^ the alternative vertical top part 30a, the middle truncated part 30b, the base 30c and the alternative truncated rear side 30d of holder 100. Alternative stop 60 is designed integrated from one piece. The alternative securing column 1 10 is situated below the alternative stop 60, which projects in front of the alternative securing column 1 10. The alternative middle truncated part 30b is truncated not only in front elevation according to Fig. 5, but the truncation 30b is additionally offset from the side facing away from the bottle being removed in the alternative truncated rear wall 30d of holder 100 and can be seen in the side elevation of holder 00 with insert 20 in Figs. 6 and 7. The alternative, substantially vertical part 30 is canted in its height in side elevation by means of truncation 30b according to Figs. 6 and 7 such that the rear side 30d of holder 100 is on the canted plane throughout its height. The longer, vertical part 40_is then longer to the extent of the canted, truncated surface 30b.
The said specific sample design of the jaw 1 and 100 of the glass container takeout mechanism is not restricted only to this specific sample design. Other variations and combinations are also possible within the context of the extent of the patent claims according to the present invention. E.g. depression 5 in the vertical top part 3 may extend as far as the top part of the stop 6 in a case where the solution is applied to removal of a glass bottle with, e.g., a long neck or a wider diameter of mouth. The specific design of the stop 6 contains two stops 6_and arranged between them the securing column VV There may also exist, however, other designs of the stops 6^ for example the stop 6 is integral and projects in front of the securing column 1 1 , which constitutes an advantageous implementation in the case of greater dimensions of holder 1_ and therefore also for the takeout of larger dimensions of container glass. The weight-reducing holes 7 do not have to consist of only two; there may be one or more and they may be located not only in the truncated part 3b, but also in the base 3c. The semicircular bottle removal cut-out 4a may be supplied with another smaller, semicircular, securing cut-out situated below the securing column 11 for insertion of the securing peg 13. The vertical part 3 may be fabricated in whole as cuboidal without the narrower and middle, truncated part. The middle part does not have to be truncated, but can, e.g., extend directly from the base. The insert 2 does not have to be cuboidal, with straight side walls 18 and rear wall 3d, but may be supplied between the side walls 1_8 and rear wall 3d with truncated side walls 3b. Various construction solutions of holder 1_ permit its use for various types of takeout mechanisms. Although the option exists of the securing column H being situated on the rear side of holder 1 or shifted in respect of the vertical axis of holder 1_ in the direction away from the mouth of the glass container to be removed, this construction arrangement would demand a quite new, complicated construction of insert 2 which would substantially increase the production cost of the inserts 2. The solution is designed for the mechanized production of container glass, not only glass bottles, but also preserve jars and other glass products, e.g. machine fabricated lamps and decorative glass objects.
Industrial applications
The solution is advantageous primarily for mechanized, automated, continual production of container glass. Numerical references
1 , 100 holder
2, 20 insert
3, 30 vertical part
3a, 30a top clamping part 3b, 30b middle part
3c, 30a base
3d, 30d rear side
4, 40 horizontal part
4a bottle removal cut-out 4b securing cut-out
5 depression
6, 60 stop
7 weight-reducing hole
8 top plate
9 bottom plate
10 recess
11 , 110 securing column
12 opening for pushing out insert
13 securing peg
14 spring
15 bolt
6 securing opening
17 neck
18 side walls