Hot-forming device for producing glass containers from glass tubes

Patent metadata

Field	Value
Publication number	US-11713269-B2
Application number	US-202016938220-A
Country	US
Kind code	B2
Filing date	Jul 24, 2020
Priority date	Jan 26, 2018
Publication date	Aug 1, 2023
Grant date	Aug 1, 2023

Abstract

A hot-forming device is provided for producing glass containers from a glass tube. The device includes a rotary table mounted so as to be rotationally movable and an assigned drive motor for driving the rotary table. The rotary table includes several holding chucks for holding workpieces distributed around the circumference of the rotary table. The rotary table has a coolant channel that is fluid-tight and through which a coolant can flow to cool.

First claim

What is claimed is:

1. A hot forming device for producing glass containers from a glass tube comprising:
a rotary table mounted so as to be rotationally movable;
an assigned drive motor configured and positioned to drive the rotary table; and
a plurality of holding chucks configured and positioned to hold workpieces, the plurality of holding chucks being distributed around a circumference of the rotary table,
wherein the rotary table includes a coolant channel that is fluid-tight and through which a coolant can flow to cool the rotary table,
wherein the rotary table comprises a first main body that forms an upper region of the rotary table and with a second main body that forms a lower region of the rotary table, wherein the first and second main bodies are connected together in rotationally rigid fashion.

2. The hot-forming device of claim 1 , wherein the coolant channel meanders, at least in portions, through the rotary table.

3. The hot-forming device of claim 2 , wherein the coolant channel extends between the plurality of holding chucks.

4. The hot-forming device of claim 1 , wherein the coolant channel comprises a common inlet distribution channel, a common outlet distribution channel, and a plurality of channel portions connected fluid-tightly and in parallel to the common inlet and outlet distribution channels, the plurality of channel portions being formed along the circumference of the rotary table.

5. The hot-forming device of claim 4 , wherein the plurality of channel portions comprises two to eight channel portions.

6. The hot-forming device of claim 4 , wherein the inlet and outlet distribution channels are circumferential channels in a common main body separated from each other via a separating wall.

7. The hot-forming device of claim 6 , wherein the circumferential channels have different diameters, and wherein an inner distribution channel, viewed in an axial direction of the common main body, is worked more deeply into the common main body than an outer distribution channel.

8. The hot-forming device of claim 7 , further comprising connections fluid-tightly to the common inlet and outlet distribution channels via radial bores are offset in an axial direction of the common main body.

9. The hot-forming device of claim 1 , wherein the coolant channel is formed by two parts that are connected together and sealed fluid-tightly.

10. The hot-forming device of claim 9 , wherein a first part of the two parts comprises a molded contour of the coolant channels and a second part of the two parts comprises a cover that covers the molded contour.

11. The hot-forming device of claim 1 , further comprising:
a carrier affixed to and extending perpendicularly to a work table, the rotary table is mounted to the carrier so as to be rotationally movable on the carrier; and
a coolant distributor arranged on the carrier above the rotary table, the coolant distributor connects a stationary supply and discharge line, fluid-tightly to the rotary table.

12. The hot-forming device of claim 1 , further comprising a rotating rotary column and a work table, the rotary table being mounted on the rotating rotary column, the rotating rotary column is mounted so as to be rotationally movable on the work table and is rotated about its axis by the assigned drive motor.

13. The hot-forming device of claim 1 , wherein the coolant channel comprises upper coolant channels that run in the upper region of the rotary table and lower coolant channels that run in the lower region of the rotary table.

14. The hot-forming device of claim 1 , wherein the coolant channel is a circumferential channel defined in the first main body.

15. The hot-forming device of claim 1 , wherein the coolant channel is positioned and configured to remove heat from the rotary table in a region of the assigned drive motor.

16. The hot-forming device of claim 1 , further comprising a rotary bearing mounting the rotary table in rotationally movable fashion, wherein the rotary bearing is arranged adjacent a portion of the rotary table through which the coolant flows.

17. The hot-forming device of claim 1 , further comprising:
a temperature sensor detecting a temperature of the rotary table and/or of the coolant flowing through the rotary table;
an actuator controlling a coolant flow; and
a control circuit communication with the temperature sensor and the actuator, the control circuit being configured to maintain the rotary table and/or the coolant at a constant temperature by adjustment of the actuator based on the temperature.

Assignees

• Schott Schweiz Ag
• Schott Pharma Schweiz Ag

Inventors

• Tremp Marcel
• Segner Johannes

Classifications

• C03B9/3816 Primary

  Means for general supply, distribution or control of the medium to the mould, e.g. sensors, circuits, distribution networks · CPC title

• C03B23/045

  Tools or apparatus specially adapted for re-forming tubes or rods in general, e.g. glass lathes, chucks (C03B23/043 takes precedence) · CPC title

• C03B23/112 Primary

  Apparatus for conveying the tubes or rods in a curved path around a vertical axis through one or more forming stations · CPC title