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CN-121992534-A - Bale opener for opening arranged fibre bales lying in longitudinal direction and method for operating a bale opener

CN121992534ACN 121992534 ACN121992534 ACN 121992534ACN-121992534-A

Abstract

The invention relates to a bale opener for opening arranged fiber bales (100) placed in a longitudinal direction (10), comprising a frame (11) that can be moved parallel to the longitudinal direction (10), and a stripping unit (12) for stripping fiber tufts from the arranged fiber bales (100), which stripping unit is arranged in a highly variable manner on the frame (11), wherein the stripping unit (12) comprises a detection mechanism (46) designed such that the size of the fiber tufts in at least one section of the fiber tufts is detectable. The invention also relates to a method for operating a bale opener (1) for opening arranged fiber bales (100) arranged in a longitudinal direction (10) into fiber tufts.

Inventors

  • THOMAS SCHMITZ

Assignees

  • 特吕茨施勒集团欧洲公司

Dates

Publication Date
20260508
Application Date
20251024
Priority Date
20241105

Claims (12)

  1. 1. An bale opener for opening arranged fibre bales (100) placed in a longitudinal direction (10), comprising: A frame (11) movable parallel to said longitudinal direction (10), and A stripping unit (12) for stripping fiber clusters from the arranged fiber packages (100), said stripping unit being arranged in a highly variable manner on the frame (11), It is characterized in that the method comprises the steps of, The stripping unit (12) comprises a detection mechanism (46) which is designed such that the size of the fiber clusters in at least one section of the fiber shower is detectable.
  2. 2. The bale opener according to claim 1, It is characterized in that the method comprises the steps of, The detection means (46) comprise one or more detection sensors (47, 48, 49, 50) which are designed such that the size of the fiber clusters in at least one section of the fiber cluster flow is detectable by the detection sensors, Each detection sensor (47, 48, 49, 50) has, in particular, a measuring region, which is associated with a section of the fiber shower.
  3. 3. The bale opener according to claim 2, It is characterized in that the method comprises the steps of, The stripping unit (12) comprises a stripping roller (31) for stripping the fiber shower from the arranged fiber package (100), and The central detection sensor (47, 48, 49, 50) of the detection means (46) is arranged coincident with the middle plane (E_31) of the stripping roller (31), wherein the middle plane (E_31) extends parallel to the longitudinal direction (10) and the stripping roller (31) is divided into two equal-length sections in a transverse direction oriented orthogonally to the longitudinal direction (10).
  4. 4. The bale opener according to claim 3, It is characterized in that the method comprises the steps of, A first lateral detection sensor (49) of the detection means (46) is arranged offset from the middle plane (E_31) of the stripping roller (31).
  5. 5. The bale opener according to claim 4, It is characterized in that the method comprises the steps of, A second lateral detection sensor (50) of the detection mechanism (46) is arranged in a non-overlapping manner with the middle plane (E_31) of the stripping roller (31).
  6. 6. The bale opener according to claim 5, It is characterized in that the method comprises the steps of, The first side detection sensor (49) and the second side detection sensor (50) are arranged on sides of the middle plane (E_31) facing away from each other.
  7. 7. The bale opener according to claim 2-6, It is characterized in that the method comprises the steps of, The detection sensors (47, 48, 49, 50) are arranged on one side of the stripping unit (12) in the longitudinal direction (10).
  8. 8. Method for operating an opener (1) for opening arranged fibre bales (100) placed in a longitudinal direction (10) into fibre tufts, in particular for operating an opener (1) according to any one of claims 1 to 7, comprising the steps of: Determining a target cluster size to which the arranged fiber package (100) should be opened; Regulating and controlling the bale opener (1) according to a set of operation parameters; Detecting the size of the fiber clusters in at least one section of the fiber cluster stream by means of a detection mechanism (46); Adapting the set of operating parameters in a manner related to the detected size of the fiber clusters in at least one section of the fiber cluster stream and the target cluster size, and Regulating and controlling the bale opener (1) according to the set of the adapted operation parameters.
  9. 9. The method according to claim 8, wherein the method comprises, It is characterized in that the method comprises the steps of, The set of operating parameters comprises one or more parameters from the group of a feed speed of the machine frame (11) in the longitudinal direction (10), a rotational speed of the stripping roller (31), a height position of the stripping unit (12) on the machine frame (11) and/or a change in the height position of the stripping unit (12) on the machine frame (11).
  10. 10. The method according to one of the claim 8 or 9, It is characterized in that the method comprises the steps of, Determining a statistical comparison value of the frequency distribution of cluster sizes in the fiber shower from the detected data about the sizes of the fiber clusters in at least one section of the fiber shower, and The set of operating parameters is adapted in a manner related to the statistical comparison value.
  11. 11. The method according to any one of claim 8 to 10, It is characterized in that the method comprises the steps of, The detection of the size of the fiber clusters in at least one section of the fiber cluster stream by means of the detection means (46) can be performed separately for the first sensor sub-arrangement and the second sensor sub-arrangement of the detection means (46).
  12. 12. The method according to claim 11, It is characterized in that the method comprises the steps of, The statistical contrast value is determined in a manner related to the data of the sensor sub-arrangement.

Description

Bale opener for opening arranged fibre bales lying in longitudinal direction and method for operating a bale opener Technical Field The invention relates to a bale opener for opening arranged fibre bales lying in a longitudinal direction and to a method for operating a bale opener. Background In the spinning preparation, a bale opener is used to release the fiber mat from the arrangement of extruded fiber mats in order to supply the fiber mat to the subsequent processing stages in the spinning preparation. Different constructional solutions of bale openers are known from the prior art. An opener for opening pressed and placed fibre bales in a placement direction is known from DE 10 2018 110 671 A1, which has a frame and a stripping unit. The stripping unit is arranged on the frame with a variable height and the frame can be moved in the direction of placement, so that the stripping unit can drive through the fibre package and can strip fibre material from the fibre package. The frame has a portal construction with a first side wall and a second side wall, which are connected to each other by a portal profile. From EP 3 536 A1, a bale opener is known, which comprises a frame in the form of a stripping tower movable along a fibre bale on a rail. The stripping unit is arranged on the stripping tower on one side in a freely projecting manner and with a variable height above the fiber package. Further, it is known from the prior art to examine the characteristics of a fiber shower loosened from a fiber package by an opener. CH 720250A1 discloses a device for this purpose, which has a bale opener and a coarse cleaner connected to the bale opener, the bale opener being connected to the coarse cleaner via a pipe. The fiber shower is transported between the bale opener and the rough cleaner through a pipe in which a sensor mechanism for determining parameters of the fiber shower is provided. The disadvantage here is that the detection of the properties of the fiber shower deviates in time from the actual stripping time. It is also disadvantageous that by determining the parameters of the fibre shower in the pipe in a spatially separated manner from the bale opener, the actual and statistical mixing effect is caused, which excludes a local evaluation of the stripping in the bale opener. Disclosure of Invention The object of the invention is to provide a bale opener which enables an optimal feed of the subsequent processing stages. Another object of the invention is to provide a corresponding method for operating an bale opener. In order to solve this object, a bale opener for opening arranged fiber bales lying in a longitudinal direction is proposed, comprising a frame that can be moved parallel to the longitudinal direction and a stripping unit for stripping fiber tufts from the arranged fiber bales, the stripping unit being arranged on the frame in a highly variable manner, wherein the stripping unit has a detection mechanism which is designed or configured such that the size of the fiber tufts in at least one section of the fiber tufts is detectable. The invention has the advantages that the integration of the detection mechanism into the height-adjustable stripping unit can be realized, the local evaluation of the generated cluster size with respect to the fiber package and the regulation and control of the bale opener based on the evaluation. This has been shown to be a precondition for homogenizing the fiber cluster size in the fiber shower, which in turn leads to an optimized outcome in the subsequent processing stage. In one possible embodiment, the detection mechanism may include one or more detection sensors. The detection sensors are each designed such that the size of the fiber clusters in at least one section of the fiber shower can be detected by the detection sensors. Each detection sensor may have a measurement region, which is associated with a section of the fiber shower. In other words, each detection sensor determines the size of the fiber cluster in the associated measurement zone of the fiber shower, each detection sensor detecting one section of the fiber shower. The detection sensor can be designed in particular as a speed sensor or as a light sensor. In a further possible embodiment, the stripping unit may comprise a stripping roller for stripping the fiber clusters from the arranged fiber packages. The central detection sensor of the detection means may be arranged coincident with the mid-plane of the stripping roller. The middle plane may extend parallel to the longitudinal direction and the height direction and may divide the stripping roller into two equal length sections in a transverse direction oriented orthogonally to the longitudinal direction. Alternatively or in combination, the detection mechanism may comprise a first side detection sensor arranged offset from the mid-plane of the stripping roller. In other words, the first side detection sensor may be arranged on a first side of