Closing Mechanism for a Glassware Forming Machine

Abstract

A closing mechanism for at least two mold halves (4, 5) held by two mold holders (7, 8) includes a drivetrain suspended under the housing section (3) inside of the station housing. The mold holders (4, 5) are mounted on a linear guide and are joined with a threaded spindle, threaded sleeve and gearing with a drive set up on the outlet side for generating a vertically oriented linear movement. A toggle-lever mechanism situated inside of an oil bath accommodated in the station housing (1) is used as the gearing. This arrangement of essential components of the drivetrain opens allows removal of the drivetrain via the upper side of the station housing when necessary or incorporating the drivetrain into the station housing, thereby simplifying repair and maintenance work.

Claims

1. A closing mechanism for at least two mold sections (7, 8) of a glassware forming machine, comprising: at least two mold holders (4, 5) configured to hold the at least two mold sections (7, 8); a station housing (1) having an upper side (2) and a housing section (3) supported on the upper side (2) of the station housing (1); a drivetrain encompassing a gearing and a drive, wherein the at least two mold holders (4, 5) are positioned to be horizontally movable by via the drivetrain between an opening position of the at least two mold sections mold (7, 8) and a closing position; a guide configured to horizontally move the at least two mold holders (4, 5), said guide positioned inside of the housing section (3) above the upper side (2) of the station housing (12) and laterally relative to the station housing (1); wherein the drive and the gearing of the drivetrain are arranged under the upper side (2) inside of the station housing (1), wherein the drivetrain is suspended under the housing section (3) inside of the station housing (1), and wherein the housing section (3) is supported on the upper side (2) of the housing section (1).

2. The closing mechanism according to claim 1, wherein the guide is a linear guide (19).

3. The closing mechanism according to claim 1, wherein the drive is configured to create a vertically oriented linear movement on the outlet side.

4. The closing mechanism according to claim 1, wherein the drive is comprised of a motor (11), a threaded spindle (12), a threaded sleeve (13), and a rod (18).

5. The closing mechanism according to claim 1, wherein the drive is comprised of a piston-cylinder unit.

6. The closing mechanism according to claim 1, further comprising a linear guide (19), mounting plates (9, 10), and guiding elements (20), wherein the mold holders (4, 5) are mounted on the linear guide (19) via said mounting plates (9, 10) and guiding elements (20).

7. The closing mechanism according to claim 6, wherein the gearing is configured to convert vertical linear movement on an inlet side into two horizontally opposite movements that are symmetrical relative to a vertical central plane.

8. The closing mechanism according to claim 7, wherein the gearing is a toggle-lever mechanism (14).

9. The closing mechanism according to claim 1, wherein a receptacle (38) that accommodates an oil bath (37) is set up under the housing section (3) and inside of the station housing (1), and wherein at least the gearing is situated inside of the oil bath (37).

10. The closing mechanism according to claim 9, wherein the gearing is mounted inside of or via the receptacle (38).

11. The closing mechanism according to claim 9, wherein a central lubricating system is set up for lubrication points outside of the oil bath (37).

12. The closing mechanism according to claim 11, wherein each lubrication point is provided with a lubricant line (41, 42) proceeding from a lubricating oil distributor (44).

13. The closing mechanism according to claim 8, wherein the toggle-lever mechanism (14) exhibits a central, horizontally extending shaft (15) that can be rotatably driven by the drive, wherein the central, horizontally extending shaft (15) is drivingly connected via two identical, oppositely drivable levers (23, 24) and intermediate levers (29, 30) with a further, respective shaft (27, 28) that extends horizontally and parallel to the central, horizontally extending shaft (15), and wherein the further, respective shafts (27, 28) are each drivingly connected via an intermediate lever (34, 35) that forms a toggle-lever system and a connecting lever (33, 36) with the mounting plates (9, 10), moving the mounting plates (9, 10) in opposite directions between the opening position and closing position of the mold halves (7, 8).

14. The closing mechanism according to claim 13, wherein the central, horizontally extending shaft and the further, respective shafts (15, 27, 28) are mounted inside of or via the receptacle (38).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The invention will be explained in greater detail below with reference to the exemplary embodiment depicted in the drawings. Shown on:

[0024] FIG. 1 is a perspective, left-side view of a station housing with a closing mechanism according to the invention in a closing position;

[0025] FIG. 2 is a perspective, right-side view of the station housing with a closing mechanism according to the invention in the opening position;

[0026] FIG. 3 is a sectional view of the drivetrain in a plane III-III of FIG. 7;

[0027] FIG. 4 is a magnified partial illustration of a detail IV of FIG. 3;

[0028] FIG. 5 is a sectional view of the station housing in a plane V-V of FIG. 7;

[0029] FIG. 6 is an outer view of the station housing according to FIG. 5, with its front wall omitted and in the opposite viewing direction;

[0030] FIG. 7 is a right-side view of the station housing in a partially sectional illustration;

[0031] FIG. 8 is a magnified partial illustration of a detail VIII of FIG. 7;

[0032] FIG. 9 is a magnified partial view of a detail IX of FIG. 10;

[0033] FIG. 10 is a left-side view of the station housing in a partially sectional illustration;

[0034] FIG. 11 is a planar view of a cross section of the closing mechanism according to the invention;

[0035] FIG. 12 is an isometric view of the closing mechanism according to FIG. 11;

[0036] FIG. 13 is an isometric central partial view of the closing mechanism according to the invention;

[0037] FIG. 14 is a depiction of the lubricating oil supply in a longitudinal section of the station housing;

[0038] FIG. 15 is a magnified partial illustration of a detail XV of FIG. 14;

[0039] FIG. 16 is a magnified partial illustration of the drivetrain of the closing mechanism according to the invention; and

[0040] FIG. 17 is a magnified partial illustration of the lubricating oil supply in a cross section of the station housing.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0041] A globally square station housing is marked 1 on FIG. 1 and FIG. 2, whose upper side 2 has located on it a housing section 3 that comprises a traverse, on which are arranged two mold holders 4, 5 that can be linearly displaced horizontally in the direction of the arrows 6 between a closing position shown on FIG. 1 and an opening position shown on FIG. 2. Each of the mold holders 4, 5 carries two mold halves 7, 8, which are preform halves of a glassware forming machine, in particular of an I.S. machine (Individual Section machine).

[0042] As yet to be described below, the housing section 3 is set up to accommodate the structural elements intended for linearly guiding the mold holders 4, 5 in the direction of the arrows 6, wherein a motor along with accompanying gear elements are accommodated under the housing section 3, and hence inside of the station housing 1.

[0043] Reference will additionally be made below to FIGS. 3 to 17, in which functional elements that coincide with those on FIGS. 1 and 2 are correspondingly numbered, eliminating the need for another description relating thereto.

[0044] The mold holders 4, 5 are secured to mounting plates 9, 10, which comprise the linking member to the remaining elements of the drivetrain of the closing mechanism. The drivetrain consists of a motor 11, whose axis also extends vertically inside of the station housing 1 and is joined with a uniaxial threaded spindle 12, which is set up by way of a threaded sleeve 13 for introducing a vertically directed linear movement in a toggle-lever mechanism 14.

[0045] The mounting plates 9, 10 are joined with a horizontal linear guide 19, which is formed by a rail profile, along which the opening and closing movement of the mold halves 7, 8 is set up. The rail profile of the linear guide 19 is situated inside the housing section 3, and provided with beveled upper and lower sides that run symmetrically to a vertical central plane, against which abut guiding elements 20 mounted via cylindrical rolling elements 40 and fastened to the mounting plates 9, 10.

[0046] The toggle-lever mechanism 14 encompasses a central shaft 15, which is joined by a lever 16 and intermediate lever 17 with a rod 18, which for its part is set up to transfer a vertical movement, and in so doing to introduce a rotational movement into the shaft 15.

[0047] The shaft 15 is provided with two spherical bearings 21, 22 lying symmetrically opposite each other, into which are hinged levers 23, 24 that for their part are joined with spherical bearings 25, 26 non-rotatably connected with shafts 27, 28 by means of intermediate levers 29, 30. The overall system comprised of the shafts 15, 27 and 28, the levers 23, 24 along with the intermediate levers 29, 30 forms a symmetrical structure relative to the central shaft 15, so that turning the shaft 15 or linearly moving the rod 18 can create symmetrically opposite rotational movements of the shafts 27, 28.

[0048] The mounting plates 9, 10 are each hinged by way of a bolt 31, 32 to an intermediate lever 33, 36, which for its part is non-rotatably connected with the shaft 27, 28 by means of a connecting lever 34, 35, thereby forming a knee joint on the sides of the shafts 27, 28 facing each other. Due to the symmetrical characteristics of the toggle-lever mechanism 14 relative to a vertical central plane running through the shaft 15, vertical movements of the drive thus create movements of the mounting plates 9, 10, and hence of the mold halves 7, 8, that are identical, yet opposite to each other.

[0049] Arrows on FIG. 17 illustrate the kinematically interconnected movements of the individual transfer elements between the drive and mounting plates 9, 10.

[0050] Essential in this regard is that all elements of the drive are arranged under the upper side 2 of the station housing, so that this upper side 2 can be used as a modular plate.

[0051] As may be gleaned in detail from FIG. 17, an oil bath 37 is set up inside of the station housing for lubricant supply purposes, specifically right under the housing section 3. To this end, a receptacle 38 that in particular accommodates the toggle-lever mechanism 14 is provided, which is filled with lubricating oil up to a fill level corresponding roughly to the position of the bolt 31, 32. The oil bath 37 includes a housing section 39, inside of which the threaded spindle 12 is mounted, and inside of which the threaded sleeve 13 is guided. Also incorporated in the oil bath 37 are the lower ends of the mounting plates 9, 10, and hence the bolts 31, 32 present in this location.

[0052] The shafts 15, 27, 28 of the toggle-lever mechanism 14 are mounted in the walls of the receptacle 38, so that the suspended arrangement of the drivetrain makes it possible to insert or remove the closing mechanism as a uniform assembly via the upper side 2 of the station housing 1.

[0053] As evident, the gearing, here essentially a toggle-lever mechanism 14, present between the drive, here the motor 11, and mounting plates 9, 10 is exposed to an especially reliable lubrication effect, since it is accommodated in an oil bath.

[0054] A central lubricating system is provided for other components to be lubricated, here in particular the linear guide 19 and the guiding elements 20 interacting with the latter, the central lubricating interacting interacts with a lubricant pump (not shown in the drawings) to establish a connection with the individual lubrication points. In this conjunction, FIGS. 14 and 15 solely by way of example depict the linear guide equipped with cylindrical rolling elements 40, which are continuously joined with a connection point, here a screw connection 43, by way of one or preferably several lubricating lines 41, 42 that empty into the respective tip of the cross sectional profile of the guide.

[0055] FIG. 16 shows a lubricating oil distributor 44, which is joined with the individual screw connections 43 via line sections 45. Each lubrication point preferably has a line section 45 allocated to it.

[0056] Lubrication is initiated in conjunction with a machine controller based on selectable points in time, wherein, if a line section 41, 42, 45 were to be jammed or no flow were to be on hand for some reason, an interference signal is triggered, so that the function of the lubricant system is in this regard automatically monitored.

[0057] The features of the subject matter of this invention set forth in the above description, the patent claims, the abstract and the drawings can be used individually and in any desired combination for the realization of the invention in its various embodiments.

[0058] The specification incorporates by reference the disclosure of DE 20 2015 006 975.4, filed Oct. 7, 2015.

[0059] The present invention is, of course, in no way restricted to the specific disclosure of the specification and drawings, but also encompasses any modifications within the scope of the appended claims.

TABLE-US-00001 Reference Numeral List: 1. Station housing 2. Upper side 3. Housing section 4. Mold holder 5. Mold holder 6. Arrows 7. Mold half 8. Mold half 9. Mounting plate 10. Mounting plate 11. Motor 12. Threaded spindle 13. Threaded sleeve 14. Toggle lever mechanism 15. Shaft 16. Lever 17. Connecting lever 18. Rod 19. Linear guide 20. Guide element 21. Pivot bearing 22. Pivot bearing 23. Lever 24. Lever 25. Pivot bearing 26. Pivot bearing 27. Shaft 28. Shaft 29. Intermediate lever 30. Intermediate lever 31. Bolt 32. Bolt 33. Connecting lever 34. Connecting lever 35. Intermediate lever 36. Intermediate lever 37. Oil bath 38. Receptacle 39. Housing section 40. Rolling body 41. Lubricant line 42. Lubricant line 43. Threaded union 44. Lubricating oil distributor 45. Line section