JP2016530133A - Extrusion method and apparatus - Google Patents

Abstract

The method and apparatus according to the invention is used for extrusion and uses at least one extruder with multiple jet heads. The multi-jet head has at least one upper head portion and at least one lower head portion. The upper head portion is arranged to be replaceable.

Description

  The present invention relates to an extrusion method that uses at least one extruder with a multiple jet head having at least one upper head portion and at least one lower head portion.

  The invention further relates to an extrusion apparatus adapted to use at least one extruder comprising a multiple jet head having at least one upper head portion and at least one lower head portion.

  The present invention relates to the technical field of extruding tire running surface stripes.

  In the production of the corresponding conventional elastomeric stripes, the necessary rubber mixture is produced using an extruder. The extruder is connected to an extrusion head having a head lower portion and a head upper portion.

  Especially in the field of high-quality and expensive tires, only a small lot size is produced depending on the tread. The lot size is particularly different for the material mixture used. In the case of production shift, it is necessary to clean both the extruder and the extrusion head while running idle. In particular, idle running and cleaning of the extruder is a waste of time. The typical time required to change the rubber mixture, including cleaning time, is currently in the range of 10 to 15 minutes.

  Today, tire producers are faced with various challenges as production becomes multifaceted. Previously, if a consumer was able to select three tire types for one tire size, there is now a choice for 10 tire types. Today, not only UHP tires, but also ultra ultra high performance has become a hot topic.

  As a result, the production lot size decreases. In part, 40 tires may be produced, which corresponds to 100 m production in extrusion. There are only two manufacturing methods per extrusion line, but in part there are also three manufacturing methods. The net production of the device is reduced to 60% of the theoretically usable time.

  Therefore, tire producers expect more flexibility in extrusion with the goal of significantly improving equipment utilization. The manual non-productive work process of cleaning the injection passage should be eliminated from the direct production process and should be performed in parallel during production.

  One aspect is to reduce the exchange time when changing the mixture of CAP components, without replacing the base and wing components.

  The object of the present invention is to improve a method of the kind mentioned at the outset in order to improve the flexibility during extrusion.

  Another object of the present invention is to improve an apparatus of the kind mentioned at the outset in order to improve the flexibility during extrusion.

  The above problems are solved with respect to the method by arranging the upper head part interchangeably.

  Moreover, the said subject is solved by the upper head part being arrange | positioned so that replacement | exchange is possible regarding an apparatus.

  The upper head half can be cleaned in the standby state and subsequently filled with the required rubber mixture each time. When changing production, the upper head half that was being produced is unlocked and displaced sideways. This brings the prepared second upper head half to the working position and locks it. Therefore, the ejection head is ready for production.

Next, the present invention will be described with reference to the drawings.
It is a figure which shows the apparatus which an upper head half part can drive | work to an axial direction with an upper extruder, and a lower head half part is fixedly arranged with a lower extruder. It is a top view of the arrangement configuration of FIG. FIG. 5 is a perspective view of an apparatus with two upper middle portions and two upper cap extruders. It is a figure which shows the apparatus which overlapped two intermediate parts and two cap extruders. It is the figure which showed the apparatus of FIG. 4 in the other operation state. It is a figure which shows the apparatus which piled up two upper intermediate parts and two upper cap extruders. It is the figure which showed the apparatus of FIG. 6 in the other operation state. It is a figure which shows the apparatus which arrange | positioned the two intermediate | middle part of an upper part, and two cap extruders of an upper part side by side in V shape. It is the figure which showed the apparatus of FIG. 8 in the other operation state. FIG. 10 is a diagram of an apparatus corresponding to FIGS. 8 and 9. It is a top view of the arrangement configuration of FIG. It is a figure which shows the apparatus which arrange | positioned the two intermediate | middle part of an upper part, and two cap extruders of an upper part side by side in V shape.

  According to one embodiment of the present invention, the two upper head halves with cap extruders can run in the lateral direction. The upper head half with the extruder is replaced (can run in the axial direction). During production, one extruder is run idle and the upper head half is cleaned.

  The head body is divided into an upper head half and a lower head half in the horizontal direction. The upper head half and the lower head half are locked together using a vertically arranged closure cylinder. The lower half is fixed on the base and the upper half is laterally displaceable and can be exchanged for a second upper half.

  The lower head half, in the case of a triplex, is combined with a foldable lower part and a foldable intermediate part and is secured to the rubber outlet using a unique locking system.

  Each upper head half is coupled to a foldable upper portion. Again, these parts are secured to the rubber outlet using a unique locking system.

  Each upper head half is connected to an extruder. These units are movably mounted on a support base.

  The unit is illustrated in FIGS.

  According to another embodiment of the invention, the replaceable intermediate part is cleaned in a standby state. When changing production, the middle part that was being produced is unlocked and turned sideways. Both intermediate parts that can be pivoted outwardly travel together in the vertical direction. The cleaned second intermediate portion is rotated into the injection head. Next, the upper part is interlocked with the injection head. At this time, the injection head is ready for production.

  According to another embodiment of the invention, the device consists of two upper middle parts and two lower cap extruders.

The intermediate part is replaced by a lifting / rotating device on the side part, an extruder running idle, and a cleaning of the intermediate part being produced. At that time, the following steps are performed.
-Cassette rotating device to DS (such as Korbach Quad)-Intermediate part changer to OS-Two intermediate parts that can be rotated outwards can travel together vertically (eg hydraulically) )
-The upper / lower position of the stroke is 525mm each
-Turn one intermediate part into the head at each end position-Interlock with the head by the upper part

  Other embodiments include two intermediate portions on top and two cap extruders on top. One extruder is fixed to the head (running in the middle).

  The extruder is fixed with screws. The idling is done laterally by the middle part. Cleaning is performed by a suitable hollow chamber in the intermediate part. There is suitable accessibility for cleaning.

  Details are illustrated in FIGS.

  The next embodiment includes two upper middle portions and two upper cap extruders. The extruder can run in the axial direction.

  The middle part does not have a hollow chamber for cleaning. The extruder is fixed to the head using a hydraulic clamp. The extruder in the standby state returns for idle running and cleaning of the central part. Since there is a closed cylinder in the middle, the accessibility to cleaning is poor.

  Details are illustrated in FIGS.

  Other embodiments include two upper middle portions and two cap extruders arranged side by side in a V-shaped arrangement. The extruder is fixedly attached to the head. Idle running occurs in the middle part.

  The extruder is fixed with screws. The idling occurs laterally by the middle part. Cleaning is performed by a suitable hollow chamber in the intermediate part. Suitable for cleaning. The disadvantage is that the passage is asymmetric and difficult to balance.

  Individual configurations are illustrated in FIGS. Details can be seen from FIGS.

  In the next embodiment, the upper two middle parts and the two cap extruders are arranged side by side in a V-shaped arrangement and fixed to the head using a hydraulic clamp. The extruder can run in the axial direction.

  The standby extruder returns to run idle and cleans the central part. There is suitable accessibility for cleaning. Disadvantages are asymmetric passages and difficulty in balancing.

  According to both embodiments of the present invention, the corresponding exchange time is significantly reduced.

  According to the first embodiment of the invention, two intermediate parts are used in the region of the extruder head. The use of one intermediate part in the area of the extruder head is already known.

  The additional intermediate part can be positioned from the extrusion head. Production continues with the intermediate part still remaining in the extrusion head. The intermediate part that travels from or is pivoted from the extrusion head can be cleaned. After the cleaned intermediate part has newly entered the extrusion head, the second extruder, which has already been supplied with the next required material mixture, is connected while production continues. Immediately after the second intermediate part enters, production can be continued with a new material mixture fed from the second extruder. Finally, the extruder that is no longer operating is run idle and cleaned.

  According to this first embodiment of the invention, the time required to alternate production is only about 6 minutes. Therefore, the replacement time can be almost halved.

  According to a second embodiment of the invention, two upper half extrusion heads are used. Each of these half heads is attached to one extruder and can run with this extruder. In the case of a production shift, a desired material is supplied to a new extruder, and the extruder is moved to a production position together with an additional half of the extrusion head for a production shift. Subsequently, the extruder which is not operating at this time and the attached half head are run idle for cleaning.

  The time saving in this second embodiment of the invention is approximately 3 minutes compared to the replacement time and cleaning time according to the state of the art.

Claims (21)

In an extrusion method using at least one extruder comprising a multiple jet head having at least one upper head portion and at least one lower head portion,
An extrusion method characterized in that the upper head portion is arranged to be replaceable.   The extrusion method according to claim 1, wherein the upper head half is caused to travel in the axial direction together with the extruder.   The extrusion method according to claim 1, wherein the intermediate portion is exchanged by a lifting / rotating device on a side portion.   The extrusion method according to claim 1, wherein the intermediate portion is idled.   The extrusion method according to claim 1, wherein two intermediate portions are arranged in the upper region, and the extruder can travel in the axial direction.   The extrusion method according to claim 1, wherein two extruders are used and the extruder is fixedly attached to a head.   The extrusion method according to claim 1, wherein two intermediate parts and a hydraulic clamp provided on the head are used. In an extrusion apparatus adapted to use at least one extruder comprising a multiple jet head having at least one upper head portion and at least one lower head portion,
An extrusion apparatus characterized in that the upper head portion is arranged to be replaceable.   The extrusion apparatus according to claim 1, wherein the upper half of the head is caused to travel in the axial direction together with the extruder.   The extrusion device according to claim 1, wherein the intermediate portion is exchanged by a lifting / rotating device on a side portion.   The extrusion device according to claim 1, wherein the intermediate portion is idled.   The extrusion apparatus according to claim 1, wherein two intermediate portions are arranged in an upper region, and the extruder can travel in an axial direction.   2. The extrusion device according to claim 1, wherein two middle parts are used and the extruder is fixedly attached to the head.   The extrusion apparatus according to claim 1, wherein two intermediate portions and a hydraulic clamp provided on the head are used. In an extrusion method using at least one extruder comprising a multiple jet head having at least one upper head portion and at least one lower head portion,
The replaceable intermediate part is cleaned in the standby state, and when the production is changed, the intermediate part that has been in the production state until now is unlocked and turned to the side to replace the two replaceable intermediate parts together. The second intermediate portion that has been cleaned is rotated into the injection head, and then the upper portion is interlocked with the injection head. At this time, the injection head is ready for production. Extrusion method characterized by In an extrusion method using at least one extruder comprising a multiple jet head having at least one upper head portion and at least one lower head portion,
An extrusion method, characterized in that the apparatus consists of two upper middle parts and two upper cap extruders. In an extrusion method using at least one extruder comprising a multiple jet head having at least one upper head portion and at least one lower head portion,
An extruding method characterized in that the intermediate portion is exchanged by a lifting / rotating device on a side portion, and the extruder is idled and the intermediate portion is cleaned during production. In an extrusion method using at least one extruder comprising a multiple jet head having at least one upper head portion and at least one lower head portion,
An extrusion method characterized in that two intermediate parts on the upper part and two cap extruders on the upper part are overlapped with each other, an extruder is fixedly attached to the head, and the intermediate part causes idle running. In an extrusion method using at least one extruder comprising a multiple jet head having at least one upper head portion and at least one lower head portion,
An extrusion method characterized by comprising two intermediate portions on the top and two cap extruders on the top so as to overlap each other, and the extruder can run in the axial direction. In an extrusion method using at least one extruder comprising a multiple jet head having at least one upper head portion and at least one lower head portion,
Two upper middle parts and two upper cap extruders are arranged side by side in a V-shaped arrangement and fixed to the head using a hydraulic clamp, and the extruder can run in the axial direction. Extrusion method characterized by that. In an extrusion method using at least one extruder comprising a multiple jet head having at least one upper head portion and at least one lower head portion,
Using two half-extrusion heads, each of these half-heads is fixedly attached to the extruder and can run with this extruder, and the desired material is supplied to the new extruder when production changes. When the production is changed, the extruder is moved to the production position together with the half of the attached extruder, and the extruder not operated at that time and the half head of the attached half are run idle for cleaning. Extrusion method.

Images