CN109879037B - Little-tailing receiving system and control method thereof - Google Patents
Little-tailing receiving system and control method thereof Download PDFInfo
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- CN109879037B CN109879037B CN201910278533.9A CN201910278533A CN109879037B CN 109879037 B CN109879037 B CN 109879037B CN 201910278533 A CN201910278533 A CN 201910278533A CN 109879037 B CN109879037 B CN 109879037B
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- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 238000004804 winding Methods 0.000 claims description 41
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Abstract
The invention discloses a low-tailing receiving system, which comprises a low-tailing pre-storage mechanism, wherein the low-tailing pre-storage mechanism comprises: a plurality of free rollers disposed on a path of a predetermined length for guiding the first material and the second material to travel on the path of the free rollers during the production of the apparatus; the first press roller and the second press roller are respectively arranged at the downstream side of the small-tailing pre-storage mechanism, and are respectively corresponding to the first roller and the second roller, and can be respectively arranged at different stages in a state of being separated from or clamped with the first roller and the second roller. The invention has simple structure, easy control, greatly reduced length of the tailing, material saving and purchasing cost reduction.
Description
Technical Field
The invention relates to the technical field of manufacturing equipment of disposable sanitary products, in particular to the fields of sanitary napkins, panty liners, paper diapers, pull-up pants, feminine sanitary pants and the like, and particularly relates to a low-tailing material receiving system and a control method thereof.
Background
The raw material supply of the disposable sanitary products generally adopts two conventional disc-type material rolls W1 and W2, as shown in fig. 1, when the raw material of the material roll W1 is about to be used up, a material receiving mechanism T (one in the form of a material receiving mechanism in the drawing) on the downstream side of the material roll is adopted to switch the raw material on the material roll W1 to the material roll W2 so as to supply the raw material required by each station, thereby facilitating the continuous operation of processing equipment.
The receiving means T usually takes the form of a zero-speed receiving, so that a storage means F (in the figure, one in the form of a storage means) is provided at the downstream side of the receiving means T for the supply of raw material during stationary receiving. However, in the process of receiving raw materials, in order to ensure continuous material receiving, a tail material with a certain roll diameter (due to the disc type roll) is reserved in the roll core of the disc type roll W1/W2 under the condition of ensuring material receiving, and the roll diameter is usually at least 10m in length, that is, the raw materials are not used up in the whole roll, so that the waste of the raw materials is caused.
If the process equipment calculates at a speed of 300m/min for each stock full length 6000m (roll diameter converted to length), the rolls will be replaced about every 20 min. And then reserving 10m of tailings of each winding diameter for receiving, so that if the machine is started for 20 hours a day, at least 600m of tailings are left a day. The utilization rate of raw materials is not high over the last month, so that the raw materials are wasted greatly, and the purchasing cost of the raw materials for manufacturers of disposable sanitary products is also high.
Disclosure of Invention
Based on the problems and disadvantages of the background art, the invention aims to provide a small-tailing receiving system and a control method thereof, so as to reduce the length of tailings, save materials and reduce purchasing cost.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the low-tailing receiving system comprises a first feeding shaft, a second feeding shaft, a receiving mechanism and a storage mechanism, wherein a first material is sleeved on the first feeding shaft, and a first winding core is arranged on the inner side of the first material; the second material is sleeved on the second feeding shaft, and a second winding core is arranged on the inner side of the second material. The low tailing receiving system further comprises: few tails prestore the mechanism, few tails prestore the mechanism and include: a plurality of free rollers disposed on a path of a predetermined length for guiding the first material and the second material to travel on the path of the free rollers during the production of the apparatus; the first press roller and the second press roller are respectively arranged at the downstream side of the small-tailing pre-storage mechanism, and are respectively corresponding to the first roller and the second roller, and can be respectively arranged at different stages in a state of being separated from or clamped with the first roller and the second roller.
Preferably, the drive source of the first feed shaft and the drive source of the first roller are operated in synchronization, and the drive source of the second feed shaft and the drive source of the second roller are operated in synchronization.
Preferably, the low tailing receiving system further comprises: a third sensor and a fourth sensor for detecting the first material and the second material respectively having small diameters; and the first sensor and the second sensor are used for respectively detecting whether the first material tail and the second material tail are broken.
Preferably, the third sensor is arranged outside the maximum roll diameter of the first material and is used for detecting the roll diameter of the first material, and the detection point passes through the outer diameter surface position of the first roll core; the fourth sensor is arranged outside the maximum roll diameter of the second material and used for detecting the roll diameter of the second material, and the detection point passes through the outer diameter surface position of the second roll core.
Preferably, the first sensor is arranged outside the maximum roll diameter of the first material, and the detection point passes through the outer diameter surface position of the first roll core; the second sensor is arranged outside the maximum winding diameter of the second material, and the detection point passes through the outer diameter surface position of the second winding core.
Preferably, the first sensor and the second sensor are respectively disposed at downstream side positions of the first feeding shaft and the second feeding shaft after unwinding.
Preferably, a plurality of free rollers provided in the low tailing pre-storing mechanism on the upstream side of the first roller and the second roller are adjustable in the horizontal direction.
Furthermore, the invention also aims to provide a control method of the low-tailing receiving system.
Step one: and setting a value detected by the small diameter in the PLC, and feeding back a signal to the PLC by the third sensor/fourth sensor when the third sensor/fourth sensor detects that the value of the outer diameter of the first material/second material reaches a preset value, wherein the storage mechanism starts a storage action.
Step two: the device continues to operate until the first sensor/second sensor detects the first material/second material tail breakage, the first sensor/second sensor feedback signal triggers a contact, the PLC controls the first press roller/second press roller to clamp onto the first roller/second roller, and a speed reducing program of the first feeding shaft and the first roller or the second feeding shaft and the second roller is started.
Step three: and the first feeding shaft and the first roller, or the second feeding shaft and the second roller start to run at the same time in a decelerating mode until the speed is reduced to 0, and the material receiving mechanism executes a material receiving program.
Step four: after the receiving is completed, the second feed shaft and the second roller, or the first feed shaft and the first roller, perform an acceleration movement until the normal running speed of the second material/first material.
Preferably, the normal running speed of the device for conveying the first material or the second material in the step 3 is N, the synchronous deceleration time of the first feeding shaft and the first roller or the synchronous deceleration time of the second feeding shaft and the second roller is t1, and then the first feeding shaft and the first roller or the second feeding shaft and the second roller synchronously decelerate and reduce the speed to 0 in the time t 1.
Preferably, the final tailing point of the first material is set as a, the clamping point of the first press roller at the first roller is set as B, the length of the first material corresponding to the first press roller in the deceleration time t1 is set as G, and the normal running speed of the first material is set as N, so that g= (t 1 x N)/2, ab > G; let AB's have a difference of H from G, i.e. a length margin H, then ab=g+h.
Preferably, a material receiving point of the first material in the material receiving mechanism is C; after the material receiving is completed, the length of the residual tail material of the first material is the sum of the distance between the clamping point B and the material receiving point C of the material receiving mechanism and the length allowance H, namely BC+H.
Preferably, the final tailing point of the second material is set as D, the nip point of the second press roll at the second roll is set as E, the length of the second material corresponding to the second press roll in the deceleration time t1 is set as G, and the normal running speed of the second material is set as N, so that g= (t 1 x N)/2, de > G; let de=g+h be the difference between the length of DE and G, i.e., the length margin H.
Preferably, a receiving point of the second material in the receiving mechanism is F; after the material receiving is completed, the length of the remaining tail material of the second material is the sum of the distance between the clamping point E and the material receiving point F of the material receiving mechanism and the length allowance H, namely EF+H.
The beneficial effects of the invention are as follows: the invention uses the signal that the first sensor/second sensor detects that the first material/second material tail is broken as a contact, namely the tail is broken on a path with a preset length, the clamping action is realized on the first press roller/second press roller, then the raw material is received, and finally the length after receiving is the sum of the length allowance H and the distance from the clamping point B/E of the first press roller/second press roller and the first roller/second roller to the receiving point C/F of the receiving mechanism, namely BC+H or EF+H. And the plurality of free rollers 11 of the low-tailing pre-storage mechanism 18 can be arranged to be adjusted in the horizontal direction so that the tailings can be almost close to the distance BC/EF, i.e. the length margin H is as close to zero as possible. The invention has simple structure, easy control, greatly reduced length of the tailing, material saving and purchasing cost reduction.
Drawings
FIG. 1 is a schematic diagram of a prior art receiving system;
FIG. 2 is a schematic diagram of a low tailing receiving system of the present invention;
FIG. 3 is an embodiment of another location of the tail sensor arrangement of the present invention;
FIG. 4 is a state diagram of the consumption of the stock after the stock is stored by the moving roller of the stock mechanism in the stock receiving process of the present invention;
fig. 5 is a graph showing the speed change of the motors of the first feed shaft and the second feed shaft, and the first roller and the second roller, respectively, in the receiving system according to the embodiment of the present invention, wherein the first feed shaft and the first roller are a group, and the second feed shaft and the second roller are a group.
Reference numerals illustrate: the first feeding shaft 1, the second feeding shaft 2, the first winding core 3, the second winding core 4, the first material 5, the second material 6, the first sensor 7, the second sensor 8, the third sensor 9, the fourth sensor 10, the free roller 11, the first roller 12, the second roller 13, the first pressing roller 14, the second pressing roller 15, the receiving mechanism 16, the storage mechanism 17, the fixed roller 17-1, the moving roller 17-2 and the low tailing pre-storage mechanism 18.
Detailed Description
The present invention will be further described with reference to the drawings and the detailed description below, but the present invention is not limited to the following, and can be arbitrarily modified and implemented within the scope of not departing from the gist of the present invention.
As shown in fig. 2, the invention provides a low tailing receiving system, which comprises a first feeding shaft 1, a second feeding shaft 2, a receiving mechanism 16 and a storage mechanism 17, wherein the first feeding shaft 1 and the second feeding shaft 2 are connected with a driving source, for example, can be directly or indirectly connected with a motor. The first material 5 is sleeved on the first feeding shaft 1, and a first winding core 3 is arranged on the inner side of the first material 5, namely, the first material 5 is arranged on the first feeding shaft 1 through the first winding core 3. The second material 6 is sleeved on the second feeding shaft 2, and a second winding core 4 is arranged on the inner side of the second material 6, namely, the second material 6 is arranged on the second feeding shaft 2 through the second winding core 4. The first material 5 and the second material 6 are the same material in a disc type material roll form and are used for material roll switching in the material receiving process. The first feeding shaft 1 and the second feeding shaft 2 may be staggered according to the equipment space, and in this embodiment, may be disposed left and right, or may be disposed up and down. In fig. 2, two flow states of full and impending material of the first material 5 and the second material 6 are shown, it being worth noting that these two states do not exist simultaneously, but rather a transition from one to the other.
The low tailing receiving system further comprises: a third sensor 9 and a fourth sensor 10 for detecting the small diameters of the first material 5 and the second material 6, respectively. The third sensor 9 is disposed outside the maximum winding diameter of the first material 5, and is configured to detect the winding diameter of the first material 5, and its detection point passes through the outer diameter surface position of the first winding core 3. Also, the fourth sensor 10 is disposed outside the maximum winding diameter of the second material 6 for detecting the winding diameter of the second material 6, the detection point of which passes through the outer diameter surface position of the second winding core 4. The detection point of the third sensor 9 in this embodiment passes through the outer diameter surface of the first winding core 3 and through the central position of the first supply shaft 1, i.e. the optimal position. Likewise, the detection point of the fourth sensor 10 in this embodiment passes through the outer diameter surface of the second winding core 4 and through the center position of the second supply shaft 2, i.e., the optimal position.
A first sensor 7 and a second sensor 8 for detecting whether the tailings of the first material 5 and the second material 6 are broken, respectively. The first sensor 7 is arranged outside the maximum winding diameter of the first material 5, and the detection point passes through the outer diameter surface position of the first winding core 3. Also, the second sensor 8 is disposed outside the maximum winding diameter of the second material 6, and its detection point passes through the outer diameter surface position of the second winding core 4. In this embodiment, the detection point of the first sensor 7 passes through the outer diameter surface of the first winding core 3 and through the center position of the first supply shaft 1, i.e., the optimal position. Likewise, the detection point of the second sensor 8 in this embodiment passes through the outer diameter surface of the second winding core 4 and through the central position of the second supply shaft 2, i.e. the optimal position.
Fig. 3 shows the position arrangement of the first sensor 7 and the second sensor 8 in another embodiment. The first sensor 7/second sensor 8 is arranged at a position downstream of the first supply shaft 1/second supply shaft 2 after unwinding, in this embodiment at a position between two free rolls 11 downstream of the first supply shaft 1/second supply shaft 2 after unwinding. Detecting with the first sensor 7/the second sensor 8 whether the tailings of the first material 5/the second material 6 are broken. The position setting of the first sensor 7/the second sensor 8 in actual production can also be set to a proper position according to the process layout space.
The third sensor 9/fourth sensor 10 detects the size of the first 5/second 6 roll of material using, for example, a laser sensor, an ultrasonic sensor. The first sensor 7/second sensor 8 employs, for example, a photoelectric sensor to detect whether the tailings of the first material 5/second material 6 are broken.
The low tailing receiving system further comprises: a low-tailing pre-storage mechanism 18 provided on the downstream side of the first and second feed shafts 1, 2, the low-tailing pre-storage mechanism 18 comprising a plurality of free rollers 11 provided on a path of a predetermined length for guiding the first and second materials 5, 6 to travel on the path of the free rollers 11 during production of the apparatus.
The first roller 12 and the second roller 13 are arranged on the downstream side of the low tailing pre-storing mechanism 18, and the first roller 12 and the second roller 13 are driving rollers which are directly or indirectly connected with a motor. And a first pressing roller 14 and a second pressing roller 15 corresponding to the first roller 12 and the second roller 13, respectively. The first and second pressing rollers 14 and 15 may be provided in a state of being separated from or nipped by the first and second rollers 12 and 13, respectively, at different stages.
The plurality of free rolls 11 of the low tailing pre-storage mechanism 18 on the upstream side of the first roll 12 and the second roll 13 may be arranged to be adjusted in the horizontal direction such that the tailings of the first material 5/second material 6 can be almost close to the BC/EF distance, i.e. the tailings become low (see below).
The driving source of the first feed shaft 1 is synchronized with the motion of the driving source of the first roller 12, and the driving source of the second feed shaft 2 is synchronized with the motion of the driving source of the second roller 13, for example, for synchronous acceleration or simultaneous deceleration. However, the rotational speeds of the first feed shaft 1 and the first roller 12 or the rotational speeds of the second feed shaft 2 and the second roller 13 are different from each other because the roll diameters of the rolls of the first material 5/second material 6 during the production process are constantly changing, and thus the rotational speeds of the first feed shaft 1/second feed shaft 2 are constantly changing, but the running speeds (linear speeds) of the first feed shaft 1 and the first roller 12 or the second feed shaft 2 and the second roller 13 for conveying the first material 5/second material 6 are matched.
A material receiving mechanism 16 is disposed on the downstream side of the first roller 12 and the second roller 13, and the material receiving mechanism 16 has various modes, such as a blade cutting mode, a hot-press mode, and the like, and specifically, different material receiving modes can be selected according to different materials. The receiving mechanism 16 is used to cut/scald off the material to be used up, such as the first material 5, and to join it to another roll of new material, such as the second material 6, so that the processing equipment is continuously operated.
A stock mechanism 17 provided downstream of the receiving mechanism 16, the stock mechanism 17 including two sets of rollers: a fixed roller 17-1 and a movable roller 17-2. The fixed roller 17-1 is a fixed structure, and the movable roller 17-2 can realize linear motion in the vertical direction. The storage mechanism 17 is used for storing raw materials before receiving and consuming the raw materials in the receiving process.
In another embodiment of the invention, a control method of the low tailing receiving system is described:
to illustrate the entire low-tail stock receiving system, the first material 5 is set to the roll being used and the second material 6 is set to the new roll waiting for replacement.
Step one: the value of the diameter detection is set in the PLC, and when the third sensor 9 detects that the value of the outer diameter of the first material 5 reaches a preset value, the third sensor 9 feeds back a signal to the PLC. If the time point is set to S1 and the normal operation speed v of the apparatus for transporting the first material 5 is set to N (unit: m/min), the stock mechanism 17 starts the stock action when the first supply shaft 1, the first roller 12, arrive at the S1 point at the normal operation speed N in synchronization: the moving roller 17-2 moves upward linearly in the vertical direction for storage of the first material 5 before receiving, at which time the first feed shaft 1 and the first roller 12 are synchronously accelerated to be operated to M, and the operation speed of M is maintained. When the stock is completed, the first supply shaft 1 and the first roller 12 are synchronously decelerated to the normal operation speed N again, as shown in fig. 5. In the process of material storage, the time ranges of acceleration, uniform speed and deceleration of the first feeding shaft 1 and the first roller 12 are set as t01, and then t01 is the material storage time of the first feeding shaft 1 and the first roller 12 in the time range t0 in the process of synchronous normal operation. In the actual operation process, a part of raw materials can be stored under the normal operation of the equipment, and then the rest raw materials are stored after the time point of S1 is reached, namely, the storage mechanism 17 only needs to be completed within the time range of t 0. After storage, the moving roller 17-2 of the reserve mechanism 17 is typically located at a position where 70% of the stored material is completed, although more may be possible.
Step two: the apparatus continues to operate until the first sensor 7 detects a tail break of the first material 5, i.e. the tail of the first material 5 is pulled from the first winding core 3. The first sensor 7 feeds back a signal to trigger a contact point, and the PLC controls the first press roller 14 to press against the first roller 12, that is, the first press roller 14 and the first roller 12 are in a pressed state, and if the time point is set to S2, when the first feed shaft 1 and the first roller 12 arrive at the S2 point at the normal operation speed N in synchronization, the first feed shaft 1 and the first roller 12 start to start a synchronous deceleration procedure, as shown in fig. 5. Of course, the first press roller 14 and the first roller 12 may be always set in a nip state, and the above-described nip operation may be omitted.
Step three: the first feed shaft 1 and the first roller 12 simultaneously start the deceleration operation. As shown in fig. 5, the apparatus conveys the first material 5 at a normal running speed N (e.g., 300 m/min), and the first feeding shaft 1 and the first roller 12 are synchronized to be decelerated for a time t1 (unit: s, e.g., 2 s), and the first feeding shaft 1 and the first roller 12 are synchronized to be decelerated and the speed is reduced to 0 in the time t1, at which time the first material 5 is not run due to being nipped by the first press roller 14 and the first roller 12, and the receiving mechanism 16 performs a receiving process.
Step four: the material receiving mechanism 16 cuts/scalds the first material 5 and connects the first material with the head of the second material 6 to complete the material receiving process. At this time, the speed of the first supply shaft 1 and the first roller 12 is kept at 0, and the stop time is the stock receiving time, denoted by t2 (unit: s, for example, 0.5 s), thereby achieving zero-speed stock receiving, as shown in fig. 5. The moving roller 17-2 in the stock mechanism 17 moves linearly downward in the vertical direction while the receiving mechanism 16 receives the material, for consumption of the raw material during receiving, as shown in fig. 4.
Step five: after the completion of the receiving, the second feed shaft 2 and the second shaft 13 of the new reel of the second material 6 are subjected to an acceleration movement, the acceleration time being set to t3 (unit: s, for example 2 s), during which the speed of the second feed shaft 2 and the second roller 13 is accelerated from 0 to the normal running speed N of said second material 6, until the second material 6 likewise circulates the steps performed by the first material 5.
When the rolls of the second material 6 are transporting raw materials, the first feeding axle 1 is replaced with a new roll of the first material 5 to be used up of the second material 6, so that the movements of the relevant flow means of the first material 5 and the second material 6 are alternately performed, i.e. one action and the other waiting, as shown in fig. 5, the speed change patterns of the motors of the first feeding axle 1, the first roll 12, and the second feeding axle 2, the second roll 13 driving the first material 5 are also alternately performed.
In the above steps, the time of t1, t2 and t3 is selected according to the production speed of the equipment, the width of the material, the material quality and other factors, and under the condition that the parameters are different, the corresponding steps are different in time.
In the above steps, the last tailing point of the first material 5 is set as a, the nip point of the first press roll 14 at the first roll 12 is set as B, the length of the first material 5 corresponding to the deceleration time t1 is set as G, and the normal running speed of the first material 5 is N, where g= (t 1×n)/2, ab > G. Let AB's have a difference of H from G, i.e. a length margin H, then ab=g+h.
Similarly, the last tailing point of the second material 6 is D, the nip point of the second pressing roller 15 at the second roller 13 is E, the length of the second material 6 corresponding to the deceleration time t1 is set to be G, and the normal running speed of the second material 6 is N, where g= (t1×n)/2, de > G. Let de=g+h be the difference between the length of DE and G, i.e., the length margin H.
Therefore, the position and the number of the free rolls 11 provided in the low-tailing pre-storing mechanism 18 are also set according to the corresponding material length G within the deceleration time t1, that is, the arrangement position of the free rolls 11 is related to the length distance AB/DE.
If the first sensor 7/second sensor 8 is placed at the downstream side position of the first supply shaft 1/second supply shaft 2 after unwinding, as shown in fig. 3, and between the two free rolls 11. At this time, the tail point a of the first material 5/the tail point D of the second material have been pulled apart and reached the detection position of the first sensor 7/the second sensor 8, respectively. At this time, similarly ab=g+h or de=g+h. However, when the laying flow of the first material 5/second material 6 is set, the distance from the detection point of the first sensor 7/second sensor 8 to the first winding core 3/second winding core 4 is set to A1, that is, the distance is A1A, assuming that the point of the first material 5 at the first winding core 3 is set. Likewise, it is assumed that the point of the second material 6 at the second winding core 4 is set to D1, i.e. the distance is D1D. The arrangement of the first material 5/second material 6 along the length of the process should therefore also take into account the position of the first sensor 7/second sensor 8. As shown in fig. 2, when the detection point of the first sensor 7/second sensor 8 passes through the outer diameter surface position of the first winding core 3/second winding core 4, A1A/D1D does not exist.
The material receiving point of the first material 5 in the material receiving mechanism 16 is set to C again according to the length and time set as described above. After the material receiving is completed, the remaining tail material of the first material 5 is the sum of the distance between the clamping point B and the material receiving point C of the material receiving mechanism 16 and the length allowance H, namely bc+h.
Likewise, the second material 6 has a receiving point F in the receiving device 16. After the material receiving is completed, the remaining tail material of the second material 6 is the sum of the distance from the clamping point E to the material receiving point F of the material receiving mechanism 16 and the length allowance H, namely ef+h.
If H is set longer, the length of the remaining tailings is also longer, and conversely, shorter. Typically, the tailings achieved by this system are in the range of 0.5-1m, in practice the position of the plurality of free rolls 11 of the low tailing pre-storage mechanism 18 in the horizontal direction can be adjusted so that the tailings of the first material 5/second material 6 can be almost close to the BC/EF distance.
The invention utilizes the path arrangement of a plurality of free rollers 11 which are arranged by the distance between the tailing point A/D and the clamping point B/E and the material length G corresponding to the range of the deceleration time t1, and the extension material receiving control system, has simple structure and convenient control, greatly shortens the tailing length, improves the utilization rate of materials and reduces the purchase cost of materials compared with the previous tailing length.
The present invention has been described in detail with the purpose of enabling those skilled in the art to understand the contents of the present invention and to implement the same, but not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (12)
1. The low-tailing receiving system comprises a first feeding shaft (1), a second feeding shaft (2), a receiving mechanism (16) and a storage mechanism (17), wherein a first material (5) is sleeved on the first feeding shaft (1), and a first winding core (3) is arranged on the inner side of the first material (5); the second feeding shaft (2) is sleeved with a second material (6), and a second winding core (4) is arranged on the inner side of the second material (6), and is characterized in that: the low tailing receiving system further comprises:
-a low-tailing pre-storage mechanism (18), the low-tailing pre-storage mechanism (18) comprising: a plurality of free rollers (11) arranged on a path of predetermined length for guiding the first material (5) and the second material (6) to travel on the path of the free rollers (11) during the production of the apparatus;
a first roller (12) and a second roller (13) arranged on the downstream side of the low tailing pre-storing mechanism (18), and a first press roller (14) and a second press roller (15) corresponding to the first roller (12) and the second roller (13), respectively, wherein the first press roller (14) and the second press roller (15) can be respectively arranged in a state of being separated from or pressed by the first roller (12) and the second roller (13) at different stages;
wherein a plurality of free rollers (11) arranged in the low tailing pre-storing mechanism (18) on the upstream side of the first roller (12) and the second roller (13) are adjustable in the horizontal direction;
after the tailing of the first material (5)/the second material (6) is broken, the first feeding shaft (1) and the first roller (12) or the second feeding shaft (2) and the second roller (13) start to run at the same time in a decelerating mode until the speed is reduced to 0, and the material receiving mechanism (16) executes a material receiving program;
after the receiving mechanism (16) receives the materials, the second feeding shaft (2) and the second roller (13) or the first feeding shaft (1) and the first roller (12) execute acceleration movement until the second material (6)/first material (5) has normal running speed;
the low-tailing receiving system further comprises a first sensor (7) and a second sensor (8) which are used for respectively detecting whether the tailings of the first material (5) and the tailings of the second material (6) are broken;
the first sensor (7) detects that the tailing of the first material (5) is broken, namely the tailing of the first material (5) is broken by pulling from the first winding core (3), a contact is triggered by a feedback signal of the first sensor (7), and the PLC controls the first press roller (14) to clamp onto the first roller (12);
or the second sensor (8) detects that the second material (6) is broken, namely, the second material (6) is pulled off from the second winding core (4), the second sensor (8) feeds back a signal to trigger a contact, and the PLC controls the second press roller (15) to clamp onto the second roller (13).
2. The low heel stock receiving system according to claim 1, wherein: the drive source of the first feed shaft (1) and the drive source of the first roller (12) are operated synchronously, and the drive source of the second feed shaft (2) and the drive source of the second roller (13) are operated synchronously.
3. The low heel stock receiving system according to claim 1, wherein: the low tailing receiving system further comprises:
a third sensor (9) and a fourth sensor (10) for detecting the diameter of the first material (5) and the diameter of the second material (6) respectively.
4. A low tailstock receiving system as defined in claim 3, wherein: the third sensor (9) is arranged at the outer side of the maximum roll diameter of the first material (5) and is used for detecting the roll diameter of the first material (5), and the detection point passes through the outer diameter surface position of the first roll core (3); the fourth sensor (10) is arranged outside the maximum winding diameter of the second material (6) and is used for detecting the winding diameter of the second material (6), and the detection point passes through the outer diameter surface position of the second winding core (4).
5. A low tailstock receiving system as defined in claim 3, wherein: the first sensor (7) is arranged outside the maximum roll diameter of the first material (5), and the detection point passes through the outer diameter surface position of the first roll core (3); the second sensor (8) is arranged outside the maximum winding diameter of the second material (6), and the detection point passes through the outer diameter surface position of the second winding core (4).
6. A low tailstock receiving system as defined in claim 3, wherein: the first sensor (7) and the second sensor (8) are respectively arranged at the uncoiled rear downstream side positions of the first feeding shaft (1) and the second feeding shaft (2).
7. A method of controlling a low tailstock receiving system as defined in any of claims 1-6, wherein: the method comprises the following steps:
step one: setting a value of small diameter detection in the PLC, and when the third sensor (9)/the fourth sensor (10) detects that the value of the outer diameter of the first material (5)/the second material (6) reaches a preset value, feeding back a signal to the PLC by the third sensor (9)/the fourth sensor (10), wherein the storage mechanism (17) starts a storage action;
step two: the equipment continues to run until the first sensor (7)/second sensor (8) detects that the first material (5)/second material (6) is broken, a contact is triggered by a feedback signal of the first sensor (7)/second sensor (8), the PLC controls the first press roller (14)/second press roller (15) to clamp onto the first roller (12)/second roller (13), and a speed reducing program of the first feeding shaft (1) and the first roller (12) or the second feeding shaft (2) and the second roller (13) is started;
step three: the first feeding shaft (1) and the first roller (12), or the second feeding shaft (2) and the second roller (13) start to run at the same time in a decelerating mode until the speed is reduced to 0, and the material receiving mechanism (16) executes a material receiving program;
step four: after the material receiving is completed, the second feeding shaft (2) and the second roller (13), or the first feeding shaft (1) and the first roller (12) perform acceleration movement until the normal running speed of the second material (6)/the first material (5).
8. The method for controlling a low tailing receiving system as set forth in claim 7, wherein: in the third step, the normal running speed of the device for conveying the first material (5) or the second material (6) is N, the synchronous deceleration time of the first feeding shaft (1) and the first roller (12) or the synchronous deceleration time of the second feeding shaft (2) and the second roller (13) is t1, and the first feeding shaft (1) and the first roller (12) or the second feeding shaft (2) and the second roller (13) synchronously decelerate and reduce the speed to 0 in the time t 1.
9. The method for controlling a low tailing receiving system as set forth in claim 8, wherein: setting the last tailing point of the first material (5) as A, setting the clamping point of the first press roller (14) at the first roller (12) as B, setting the length of the first material (5) corresponding to the first material within the deceleration time t1 as G, and setting the normal running speed of the first material (5) as N, wherein G= (t 1 x N)/2, and AB > G; let AB's have a difference of H from G, i.e. a length margin H, then ab=g+h.
10. The control method of the low tailing receiving system according to claim 9, wherein: the material receiving point of the first material (5) in the material receiving mechanism (16) is C; after the material receiving is completed, the length of the residual tailings of the first material (5) is the sum of the distance between the clamping point B and the material receiving point C of the material receiving mechanism (16) and the length allowance H, namely BC+H.
11. The method for controlling a low tailing receiving system as set forth in claim 8, wherein: setting the last tailing point of the second material (6) as D, setting the clamping point of the second press roller (15) at the second roller (13) as E, setting the length of the second material (6) corresponding to the deceleration time t1 as G, and setting the normal running speed of the second material (6) as N, wherein G= (t 1 x N)/2, and DE > G; let de=g+h be the difference between the length of DE and G, i.e., the length margin H.
12. The method for controlling a low tailing receiving system as set forth in claim 11, wherein: the material receiving point of the second material (6) in the material receiving mechanism (16) is F; after the material receiving is completed, the length of the residual tailings of the second material (6) is the sum of the distance between the clamping point E and the material receiving point F of the material receiving mechanism (16) and the length allowance H, namely EF+H.
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| CN201910278533.9A CN109879037B (en) | 2019-04-09 | 2019-04-09 | Little-tailing receiving system and control method thereof |
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| CN201910278533.9A CN109879037B (en) | 2019-04-09 | 2019-04-09 | Little-tailing receiving system and control method thereof |
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| CN109879037B true CN109879037B (en) | 2024-02-13 |
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| CN113858626A (en) * | 2021-08-25 | 2021-12-31 | 浙江美格机械股份有限公司 | PVC sheet plate-shaped multilayer glue-free composite embossing device |
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