Automatic bundling tool device
Apparatuses and methods that improve production processes in which automatic bundling tool devices (ABT) bundle a good by one-piece-ties (OPT). The improvements include an ABT for bundling a bundle good with a OPT, which includes a band part end and a head part. The ABT includes a guiding device and a tensioning device configured to tension the OPT. The tensioning device is further configured to push the OPT band part end against the tensioning direction in a pushing direction after the OPT has been tensioned. The ABT further includes a control device configured to determine a characteristic parameter for the pushing of the OPT band part end against the tensioning direction and output a quality check signal as a function of the characteristic parameter for the pushing against the tensioning direction and a reference value predetermined for the characteristic parameter.
1 . An automatic bundling tool device (ABT) for bundling a bundle good with a one-piece-tie (OPT) including a one-piece-tie (OPT) band part end and a one-piece-tie (OPT) head part, the ABT comprising:
a guiding device defining a path configured to guide the OPT band part end around the bundle good through a window in the OPT head part;
a tensioning device comprising a gear wheel configured to engage the OPT band part end and configured to tension the OPT, with a pulling of the OPT band part end that is guided through the window in a tensioning direction, the tensioning device further configured to push the OPT band part end against the tensioning direction in a pushing direction after the OPT has been tensioned; and
a control device configured to determine a force or other characteristic parameter for the pushing of the OPT band part end against the tensioning direction and output a quality check signal as a function of the force or the other characteristic parameter and a reference force or reference value predetermined for the force or the other characteristic parameter.
2 . The ABT according to claim 1 , wherein the control device is further configured to determine the characteristic parameter for the pushing of an OPT band part end that is not completely pushed out of the tensioning device.
3 . The ABT according to claim 1 , wherein the tensioning device further comprises a motor, and the characteristic parameter comprises at least one of:
a motor current of the motor of the tensioning device; or
a variable derived from the motor current of the motor of the tensioning device.
4 . The ABT according to claim 1 , wherein the tensioning device further comprises a pulse-controlled direct current motor, the characteristic parameter comprises a motor current of the pulse-controlled direct current motor, and the tensioning device is configured to control the pulse-controlled direct current motor with a predetermined number of control pulses while pushing against the tensioning direction.
5 . The ABT according to claim 1 , wherein the tensioning device further comprises a motor, the characteristic parameter comprises a variable derived from a motor current of the motor of the tensioning device, and the variable derived from the motor current of the motor comprises a force that is required to push the OPT band part end against the tensioning direction after tensioning of the OPT has taken place.
6 . The ABT according to claim 1 , wherein the control device is configured to determine the characteristic parameter once during the pushing against the tensioning direction.
7 . The ABT according to claim 6 , wherein the tensioning device further comprises a pulse-controlled direct current motor, the characteristic parameter comprises a motor current of the pulse-controlled direct current motor, the tensioning device is configured to control the pulse-controlled direct current motor with a predetermined number of control pulses while pushing against the tensioning direction, and the characteristic parameter is determined for an i-th control pulse of the predetermined number of n control pulses, with 0<i<n+1.
8 . The ABT according to claim 1 , wherein the control device is further configured to determine the characteristic parameter for a series of times during the pushing against the tensioning direction, and compare a course of the characteristic parameter with a course of the reference value predetermined for the characteristic parameter for the outputting of the quality check signal.
9 . The ABT according to claim 1 , wherein the control device is further configured to determine the characteristic parameter for a predetermined period of time during the pushing against the tensioning direction.
10 . The ABT according to claim 9 , wherein the control device is further configured to determine the characteristic parameter for at least one of:
a period of time of a predetermined number of motor steps during the pushing against the tensioning direction, with integrating of the characteristic parameter or a measured value on which the characteristic parameter is based on, over the predetermined period of time; or
a period of time of a predetermined number of motor steps during the entire pushing against the tensioning direction, with integrating of the characteristic parameter or a measured value on which the characteristic parameter is based on, over the predetermined period of time.
11 . The ABT according to claim 1 , wherein the reference value predetermined for the characteristic parameter is predetermined by the control device based on a statistical evaluation of the determined characteristic parameter.
12 . The ABT according to claim 1 , wherein a course of the reference value predetermined for the characteristic parameter is predetermined by the control device based on a statistical evaluation of the determined characteristic parameter.
13 . The ABT according to claim 1 , wherein a course of the reference value predetermined for the characteristic parameter is predetermined by the control device based on an expected value for the characteristic parameter.
14 . The ABT according to claim 13 , wherein the expected value for the characteristic parameter two or three times a standard deviation for the characteristic parameter.
15 . The ABT according to claim 1 , wherein the predetermined reference value is a predetermined threshold value, and the control device is configured to compare the characteristic parameter with the predetermined threshold value to output at least one of:
a positive quality check signal if the characteristic parameter is greater than the threshold value; or
a negative quality check signal if the characteristic parameter is less than the threshold value.
16 . The ABT according to claim 1 , wherein the guiding device comprises a holding element configured to hold the OPT head part in a predetermined position when the OPT band part end is pushed against the tensioning direction.
17 . The ABT according to claim 16 , wherein the holding element is configured to hold the OPT head part in the predetermined position when the OPT band part end is pushed against the tensioning direction in the same position as when the OPT is tensioned.
18 . A method of bundling a bundle good with a one-piece-tie (OPT) by an automatic bundling tool device (ABT) comprising:
guiding a one-piece-tie (OPT) band end around the bundle good and through a window in a head of the OPT, by a guiding device of the ABT;
tensioning the OPT with pulling the OPT band end in a tensioning direction, by a tensioning device of the ABT;
pushing the OPT band end against the tensioning direction after the OPT has been tensioned, by the tensioning device of the ABT;
determining a force or other characteristic parameter required for pushing the end of the OPT against the tensioning direction, by a control device of the ABT; and
outputting, by the control device, a quality check signal in dependence on the force or the other characteristic parameter required to push against the tensioning direction and a predetermined reference force or reference value.
19 . The method according to claim 18 , further comprising at least one of:
ejecting the OPT band end without cutting off the OPT band end, by the tensioning device; or
cutting off the OPT band end, by a cutting device.
20 . The method according to claim 18 , further comprising cutting off the OPT band end, by a cutting device, wherein cutting off the OPT band end is performed after the OPT band end has been pulled back to a starting position before being pushed.