Back to results
US 6,328,245 B1Granted
Apparatus for dispensing individually predetermined lengths of a web material
AssigneesJens Reumert, Jan Sterup
InventorsSvend-Ove Kastfelt, Bent Nielsen, Jan Sterup
Life of this patent
Estimating the term…
Abstract
An apparatus for automatically dispensing individually predetermined lengths of a web material, such as textile, from a bolt of same. An inclined transport surface conveys a bolt introduced by a customer towards a flip-over mechanism including rods on chains, the textile thereby being unwound from the bolt, the length of the unwound textile being measured by a rotative measuring device, the predetermined length of textile being severed by a severing device. The separated length is delivered to the customer for removal from the apparatus in folded condition together with the bolt in a receptacle displaceable along rails.
Claims41
An apparatus for dispensing a predetermined length of a web material from a roll of wound web material, said apparatus comprising:
- a housing;
- unwinding means for unwinding web material from the roll, the unwinding means comprising an unwinding surface for reception and support of the roll, and unwinding conveying means for unwinding web material from the roll when positioned on the unwinding surface with the roll axis transversely to a conveying direction of the unwinding conveying means;
- severing means for separating web material from the roll;
- and
- conveying means for capturing a leading free end of unwound web material hanging by gravity downstream from said unwinding surface and for conveying said unwound web material from the unwinding means to the severing means, said conveying means including:
- a pivotable frame pivotally attached to said housing and pivotable about a first pivot axis;
- rotary measuring means attached to said pivotable frame for automatically engaging the web material and for measuring a predetermined length of web material conveyed to the severing means;
- a rocker arm pivotally attached to said pivotable frame and pivotable about a second pivot axis;
- pressure means attached to said rocker arm for pressing the web material against the rotary measuring means and for automatically bringing the unwound web material into forced operating engagement with the rotary measuring means so that the predetermined length of unwound web material can be automatically conveyed to the severing means, the severing means and the conveying means being adapted to cooperate with the rotary measuring means, so that the predetermined length of web material can be separated from the roll, said pressure means being displaceable from a first position to a second position, said rotary measuring means and said pressure means being spaced-apart and located on opposite sides of a path of the leading free end of the unwound web material hanging by gravity downstream from said unwinding surface when said rotary measuring means and said pressure means are in said first position, and said pressure means pressing the unwound web material against said rotary measuring means when said rotary measuring means and said pressure means are in said second position;
- sensing means for sensing the presence of the leading free end of the unwound web material in said path;
- displacing means for pivoting said rocker arm about said second pivot axis to move said pressure means from said first position to said second position to capture the leading free end of the unwound web material between said pressure means and said measuring means, and for pivoting said pivotable frame about said first pivot axis to move said measuring means together with said pressure means to a third position spaced horizontally downstream from said unwinding surface;
- and
- control means for actuating said displacing means to displace said pressure means from said first position to said second position upon detection of the leading free end of the unwound web material in said path by said sensing means, and to displace said pivotable frame about said first pivot axis to move said measuring means together with said pressure means to said third position.
10 more elements
An apparatus for dispensing a predetermined length of a web material from a roll of wound web material, said apparatus comprising:
- unwinding means for unwinding web material from the roll, the unwinding means comprising an unwinding surface for reception and support of the roll, and unwinding conveying means for unwinding web material from the roll when positioned on the unwinding surface with the roll axis transversely to a conveying direction of the unwinding conveying means;
- separating means for separating web material from the roll;
- conveying means for conveying unwound web material from the unwinding means to the separating means;
- rotary measuring means for automatically engaging the web material and for measuring a predetermined length of web material conveyed to the separating means;
- pressure means for pressing the web material against the rotary measuring means and for automatically bringing the unwound web material into forced operating engagement with the rotary measuring means so that the predetermined length of unwound web material can be automatically conveyed to the separating means, the separating means and the conveying means being adapted to cooperate with the rotary measuring means, so that the predetermined length of web material can be separated from the roll;
- and
- restraining means located adjacent to the unwinding surface for restraining movement of the roll, the restraining means comprising inhibiting means inhibiting movement of the roll in the conveying direction of the unwinding conveying means, the restraining means arranged to interact intermittently with the roll, the restraining means comprising at least one influencing element arranged to intermittently intersect the path of the roll conveyed by the unwinding conveying means,
- wherein the at least one influencing element comprises at least one rod which is longer than the maximum possible width of the web material.
5 more elements
An apparatus for dispensing a predetermined length of a web material from a roll of wound web material, said apparatus comprising:
- unwinding means for unwinding web material from the roll, the unwinding means comprising an unwinding surface for reception and support of the roll, and unwinding conveying means for unwinding web material from the roll when positioned on the unwinding surface with the roll axis transversely to a conveying direction of the unwinding conveying means;
- separating means for separating web material from the roll;
- conveying means for conveying unwound web material from the unwinding means to the separating means;
- rotary measuring means for automatically engaging the web material and for measuring a predetermined length of web material conveyed to the separating means;
- pressure means for pressing the web material against the rotary measuring means and for automatically bringing the unwound web material into forced operating engagement with the rotary measuring means so that the predetermined length of unwound web material can be automatically conveyed to the separating means, the separating means and the conveying means being adapted to cooperate with the rotary measuring means, so that the predetermined length of web material can be separated from the roll;
- layering means located downstream from the rotary measuring means for depositing the web material in layers in a receptacle, the layering means comprising at least one displacing element for displacing a vertical portion of the web material in a substantially horizontal direction substantially at right angles to the transverse dimension of the web material;
- and
- receptacle displacing means for displacing the receptacle from a first folding position substantially vertically below the layering means to a second emptying position at a height which allows for manual emptying thereof,
- wherein the displacement path of the receptacle between said first position and said second position is such that the roll may be deposited in the receptacle when the conveying direction of the unwinding conveying means is reversed after a separation operation.
6 more elements
Dependencies are inferred from the claim text.