CN214732093U - Film coil stripping dolly movement track detection device - Google Patents
Film coil stripping dolly movement track detection device Download PDFInfo
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- CN214732093U CN214732093U CN202120461209.3U CN202120461209U CN214732093U CN 214732093 U CN214732093 U CN 214732093U CN 202120461209 U CN202120461209 U CN 202120461209U CN 214732093 U CN214732093 U CN 214732093U
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Abstract
The device for detecting the motion trail of the film coil stripping trolley comprises a longitudinally extending guide rail and two sets of photoelectric correlation sensing units, wherein the first set of photoelectric correlation sensing unit comprises a first photoelectric emitting end, a first photoelectric receiving end and a first reflector, and the second set of photoelectric correlation sensing unit comprises a second photoelectric emitting end, a second photoelectric receiving end and a second reflector; a ray passing through the first photoelectric emission end and perpendicular to the first light reflecting plate is called a first ray, a ray passing through the second photoelectric emission end and perpendicular to the second light reflecting plate is called a second ray, the intersection point of the first ray and the second ray is located on the middle datum line, and a first acute included angle formed between the first ray and the middle datum line is not equal to a second acute included angle formed between the second ray and the middle datum line; and a central processing unit is also arranged. The utility model discloses can accurate judgement get into the object of the removal region the inside of the dolly of unloading a roll the dolly or human body is unloaded.
Description
Technical Field
The utility model belongs to the technical field of film equipment of unloading, concretely relates to film dolly movement track detection device that unloads.
Background
In the process of film processing and production, a coiled film (film roll for short) is often required to be unloaded onto a special carrying trolley (coil unloading trolley for short), and then the coil unloading trolley moves away the film roll and carries out the subsequent moving and transporting procedures. The unwind carriages are typically mounted on longitudinally extending rails and when a roll of film on a production line is unwound onto the unwind carriages, the unwind carriages need to be located at a set position on the rails, which is referred to as the unwind position. The coil stripping trolley is arranged on the track, and the moving speeds of the rest segments are basically constant except for the accelerating segment before the coil stripping position and the decelerating segment after the coil stripping position.
In a part of production lines with higher automation degree, the subsequent moving process of the coil stripping trolley after the coil stripping position is automatically controlled and automatically generated, so that the moving state of the coil stripping trolley needs to be detected and judged. In the conventional technology, the detection of the moving state of the coil stripping trolley is usually performed by using a photoelectric eye device to judge whether the coil stripping trolley passes through a monitoring position on a track, however, when a person enters a detection area of the coil stripping trolley, the photoelectric eye device cannot identify whether the object is the coil stripping trolley, so that misjudgment is generated, and further, subsequent false operation is caused. Later, attempts were made to verify whether the object entering the monitoring area was an unwinder car in combination with the time length indicator, however, since the length of the unwinder car staying at the unwinding position is not uniform, the total time length is difficult to compare and verify accurately. If the attempt is made to further subdivide and detect the moving speed of the object before the coil stripping position and the moving speed after the coil stripping position, at least four sets of photo-eye devices are needed (namely two sets before the coil stripping position and two sets after the coil stripping position), and the possibility of misjudgment exists, namely when the moving speed of the human body is just close to the moving speed of the coil stripping trolley, the possibility of larger misjudgment exists.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned shortcoming and provide a film coil stripping dolly movement track detection device, it can accurately judge that the object that gets into the removal region the inside of coil stripping dolly is coil stripping dolly or human body.
The purpose can be realized according to the following scheme: the device is mainly characterized by also comprising two sets of photoelectric correlation sensing units, wherein the first set of photoelectric correlation sensing unit comprises a first photoelectric emitting end, a first photoelectric receiving end and a first reflector plate, and the second set of photoelectric correlation sensing unit comprises a second photoelectric emitting end, a second photoelectric receiving end and a second reflector plate; the first photoelectric emission end vertically faces the first reflector, the first photoelectric receiving end vertically faces the first reflector, the first photoelectric emission end abuts against the first photoelectric receiving end, and a photoelectric signal sent by the first photoelectric emission end is reflected by the first reflector and then emitted to the first photoelectric receiving end; the first photoelectric emission end and the first reflector are respectively positioned at the left side and the right side of the guide rail;
the second photoelectric emission end vertically faces the second reflector, the second photoelectric receiving end vertically faces the second reflector, and the second photoelectric emission end abuts against the second photoelectric receiving end; photoelectric signals sent by the second photoelectric transmitting end are reflected by the second reflector and then emitted to the second photoelectric receiving end; the second photoelectric emission end and the second reflector are respectively positioned at the left side and the right side of the guide rail; the first reflector and the second reflector are respectively positioned at the left side and the right side of the guide rail; a ray passing through the first photoelectric emission end and perpendicular to the first light reflecting plate is called a first ray, a ray passing through the second photoelectric emission end and perpendicular to the second light reflecting plate is called a second ray, the intersection point of the first ray and the second ray is located on the middle datum line, and a first acute included angle formed between the first ray and the middle datum line is not equal to a second acute included angle formed between the second ray and the middle datum line;
in both the first photoelectric emission end and the first reflector, one of the first photoelectric emission end and the first reflector is more front than the unwinding position, and the other one of the first photoelectric emission end and the first reflector is more rear than the unwinding position;
in both the second photoelectric emission end and the second reflector, one of the second photoelectric emission end and the second reflector is more front than the unwinding position and the other one of the second photoelectric emission end and the second reflector is more rear than the unwinding position;
the photoelectric detection device is characterized by further comprising a central processing unit, the central processing unit comprises a timer, and the first photoelectric receiving end and the second photoelectric receiving end are connected to the central processing unit respectively.
The first photoelectric transmitting end is a first infrared transmitting end, the first photoelectric receiving end is a first infrared receiving end, the second photoelectric transmitting end is a second infrared transmitting end, and the second photoelectric receiving end is a second infrared receiving end.
The utility model has the advantages of it is following and effect:
first, because the intersection point of the first ray and the second ray is located on the middle datum line, a first acute included angle formed between the first ray and the middle datum line is not equal to a second acute included angle formed between the second ray and the middle datum line, the time points of the coil stripping trolley entering the first ray and the second ray before reaching the coil stripping position are different, and the time points of the coil stripping trolley exiting the first ray and the second ray after reaching the coil stripping position are also different. Because of the characteristics, the utility model discloses only need utilize two sets of photoelectricity correlation sensing unit, just can combine the planar projection shape and the translation rate of the dolly of unloading roll, utilize the time difference that two anterior horn points got into first ray and second ray about the dolly of unloading roll and control two posterior horn points and withdraw from the time difference of first ray and second ray, the accurate mobile object of discerning entering monitoring area is the dolly of unloading roll or is the human body.
The detection mode of the utility model combines the moving speed of the two tracks of the coil stripping trolley and the outline shape of the coil stripping trolley, so that the misjudgment probability is very small; in other words, even if an object (such as a human body) enters the monitoring area and moves at the same speed as the unwinding trolley, the object can still be identified and rejected due to the fact that the object is different from the unwinding trolley in shape.
Third, although the time that coil stripping dolly front portion got into first ray and second ray takes place before reacing coil stripping position, coil stripping dolly rear portion takes place after reacing coil stripping position in the time of withdrawing from first ray and second ray, but the utility model discloses a detection mode, with coil stripping dolly stop not relevant for a long time in coil stripping position, do not receive coil stripping dolly restriction in coil stripping position dwell time length promptly.
Drawings
Fig. 1 is a schematic diagram illustrating a planar structure according to an embodiment of the present invention.
Fig. 2 is an analytic schematic view of the working principle of the embodiment of the present invention.
Detailed Description
The film coil stripping trolley motion trail detection device shown in figure 1 comprises a guide rail 3 extending longitudinally, a coil stripping trolley 4 is arranged on the guide rail 3 in a longitudinally movable mode, a moving track line (such as an RS line in figures 1 and 2) at the left end of the coil stripping trolley 4 is called a trolley left end track line, a moving track line (such as a UV line in figures 1 and 2) at the right end of the coil stripping trolley is called a trolley right end track line, a middle line (such as a QP line in figures 1 and 2) between the trolley left end track line and the trolley right end track line is called a middle reference line, a coil stripping position (such as a rectangular GHFE position in figures 1 and 2) is formed in the middle of a track of the coil stripping trolley 4 moving longitudinally along the guide rail 3, and two sets of photoelectric correlation sensing units are further arranged, the first set of photoelectric correlation sensing unit comprises a first infrared emission end 11, a first infrared receiving end 13 and a first reflection plate 12, and the second set of photoelectric correlation sensing unit comprises a second infrared emission end 21, A second infrared receiving end 23, a second reflector 22; the first infrared transmitting end 11 vertically faces the first reflector 12, the first infrared receiving end 13 vertically faces the first reflector 12, the first infrared transmitting end 11 abuts against the first infrared receiving end 13, and an infrared signal emitted by the first infrared transmitting end 11 is reflected by the first reflector 12 and then emitted to the first infrared receiving end 13; the first infrared emission end 11 and the first reflector 12 are respectively positioned at the left side and the right side of the guide rail 3; the second infrared transmitting end 21 vertically faces the second reflector 22, the second infrared receiving end 23 vertically faces the second reflector 22, and the second infrared transmitting end 21 abuts against the second infrared receiving end 23; the infrared signal emitted by the second infrared emitting end 21 is reflected by the second reflector 22 and then emitted to the second infrared receiving end 23; the second infrared emission end 21 and the second reflector 22 are respectively positioned at the left side and the right side of the guide rail 3; the first reflector 12 and the second reflector 22 are respectively positioned at the left side and the right side of the guide rail 3; a ray (such as JK line in fig. 1 and 2) passing through the first infrared emitting end 11 and perpendicular to the first reflector 12 is called a first ray, a ray (such as MN line in fig. 1 and 2) passing through the second infrared emitting end 21 and perpendicular to the second reflector 22 is called a second ray, an intersection point (such as O point in fig. 1 and 2) of the first ray (such as JK line in fig. 1 and 2) and the second ray (such as MN line in fig. 1 and 2) is located on the middle reference line (such as QP line in fig. 1 and 2), and a first acute included angle (such as JOP in fig. 1 and 2) formed between the first ray and the middle reference line is smaller than a second acute included angle (such as MOP in fig. 1 and 2) formed between the second ray and the middle reference line;
in both the first infrared-emitting end 11 and the first reflector 12 as viewed from the longitudinal position, wherein the first infrared-emitting end 11 is more rearward than the unwinding position and the first reflector 12 is more forward than the unwinding position;
in both the second infrared-emitting end 21 and the second reflector 22 as viewed from the longitudinal position, wherein the second infrared-emitting end 21 is located more rearward than the unwinding position and the second reflector 22 is located more forward than the unwinding position;
and a central processing unit is further arranged, the central processing unit comprises a timer, and the first infrared receiving end 13 and the second infrared receiving end 23 are respectively connected to the central processing unit.
The working principle of the above embodiment is as follows:
a first infrared emitting end 11 of the first set of photoelectric correlation sensing units emits infrared rays to a first reflector 12, and the first reflector 12 reflects the infrared rays back to a first infrared receiving end 13; the first infrared receiving end 13 transmits the signal to the central processing unit;
a second infrared emitting end 21 of the second set of photoelectric correlation sensing unit emits infrared rays to a second reflector 22, and the second reflector 22 reflects the infrared rays back to a second infrared receiving end 23; the second infrared receiving end 23 transmits the signal to the central processing unit;
when the coil stripping trolley 4 enters from back to front (as shown by an arrow in fig. 2) along the extension direction of the track 3 and passes through the monitoring area, the front left corner of the coil stripping trolley 4 firstly passes through a point a of a first ray, as shown in fig. 2, the infrared signal of a first infrared receiving end 13 is interrupted, and the central processing unit records a first time point of the interruption of the infrared signal;
when the coil stripping trolley 4 continues to advance, the right front corner of the coil stripping trolley passes through a point B of a second ray, as shown in fig. 2, the infrared signal of the second infrared receiving end 23 is interrupted, and the central processing unit records a second time point of the interruption of the infrared signal;
then the coil stripping trolley reaches a coil stripping position and stays at the coil stripping position for a period of time; then the coil stripping trolley continues to advance;
when the left rear corner of the coil stripping trolley passes through the point C of the second ray, the second infrared receiving end 23 receives the infrared signal again, and as shown in fig. 2, the central processing unit records a third time point when the infrared signal is received again;
when the right rear corner of the coil stripping trolley passes through the point D of the first ray, the first infrared receiving end 13 receives the infrared signal again, and as shown in fig. 2, the central processing unit records a fourth time point when the infrared signal is received again;
the central processing unit calculates a time interval t1 between the first time point and the second time point and calculates a time interval t2 between the third time point and the fourth time point, if t1= t2, as shown in fig. 2, the central processing unit judges that the planar projection shape of the object is rectangular, judges that the center line of the movement track is coincident with the middle reference line, and judges that the movement speeds of the object when entering and exiting the monitoring area are equal, and the object conforming to the movement characteristics can be basically determined to be the unwinding trolley instead of the human body. In addition, further verification and judgment can be carried out according to whether the moving speed of the coil stripping trolley is basically matched with the time length of t1 (t 2).
Claims (2)
1. A film coil stripping trolley movement track detection device comprises a longitudinally extending guide rail, wherein a coil stripping trolley is arranged on the guide rail in a longitudinally movable manner, a moving track line at the left end of the coil stripping trolley is called a trolley left end track line, a moving track line at the right end of the coil stripping trolley is called a trolley right end track line, a middle line between the trolley left end track line and the trolley right end track line is called a middle datum line, and a coil stripping position is formed in the middle of a track of the coil stripping trolley moving longitudinally along the guide rail; the first set of photoelectric correlation sensing units comprise a first photoelectric emitting end, a first photoelectric receiving end and a first reflector, and the second set of photoelectric correlation sensing units comprise a second photoelectric emitting end, a second photoelectric receiving end and a second reflector; the first photoelectric emission end vertically faces the first reflector, the first photoelectric receiving end vertically faces the first reflector, the first photoelectric emission end is close to the first photoelectric receiving end, a photoelectric signal sent by the first photoelectric emission end is reflected by the first reflector and then is emitted to the first photoelectric receiving end, and the first photoelectric emission end and the first reflector are respectively positioned at the left side and the right side of the guide rail;
the second photoelectric emission end vertically faces the second reflector, the second photoelectric receiving end vertically faces the second reflector, the second photoelectric emission end is close to the second photoelectric receiving end, a photoelectric signal emitted by the second photoelectric emission end is reflected by the second reflector and then emitted to the second photoelectric receiving end, and the second photoelectric emission end and the second reflector are respectively positioned on the left side and the right side of the guide rail; the first reflector and the second reflector are respectively positioned at the left side and the right side of the guide rail; a ray passing through the first photoelectric emission end and perpendicular to the first light reflecting plate is called a first ray, a ray passing through the second photoelectric emission end and perpendicular to the second light reflecting plate is called a second ray, the intersection point of the first ray and the second ray is located on the middle datum line, and a first acute included angle formed between the first ray and the middle datum line is not equal to a second acute included angle formed between the second ray and the middle datum line;
in both the first photoelectric emission end and the first reflector, one of the first photoelectric emission end and the first reflector is more front than the unwinding position, and the other one of the first photoelectric emission end and the first reflector is more rear than the unwinding position;
in both the second photoelectric emission end and the second reflector, one of the second photoelectric emission end and the second reflector is more front than the unwinding position and the other one of the second photoelectric emission end and the second reflector is more rear than the unwinding position;
the photoelectric detection device is characterized by further comprising a central processing unit, the central processing unit comprises a timer, and the first photoelectric receiving end and the second photoelectric receiving end are connected to the central processing unit respectively.
2. The film coil stripping trolley movement track detection device as claimed in claim 1, characterized in that: the first photoelectric transmitting end is a first infrared transmitting end, the first photoelectric receiving end is a first infrared receiving end, the second photoelectric transmitting end is a second infrared transmitting end, and the second photoelectric receiving end is a second infrared receiving end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120461209.3U CN214732093U (en) | 2021-03-03 | 2021-03-03 | Film coil stripping dolly movement track detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120461209.3U CN214732093U (en) | 2021-03-03 | 2021-03-03 | Film coil stripping dolly movement track detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214732093U true CN214732093U (en) | 2021-11-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120461209.3U Active CN214732093U (en) | 2021-03-03 | 2021-03-03 | Film coil stripping dolly movement track detection device |
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| Country | Link |
|---|---|
| CN (1) | CN214732093U (en) |
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2021
- 2021-03-03 CN CN202120461209.3U patent/CN214732093U/en active Active
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