CN111620158B - Automatic roll changing and receiving system and method for disposable sanitary product production equipment - Google Patents
Automatic roll changing and receiving system and method for disposable sanitary product production equipment Download PDFInfo
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- CN111620158B CN111620158B CN202010492640.4A CN202010492640A CN111620158B CN 111620158 B CN111620158 B CN 111620158B CN 202010492640 A CN202010492640 A CN 202010492640A CN 111620158 B CN111620158 B CN 111620158B
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- 238000010030 laminating Methods 0.000 claims abstract description 14
- 238000003825 pressing Methods 0.000 claims abstract description 10
- 238000013519 translation Methods 0.000 claims description 17
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H19/00—Changing the web roll
- B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
- B65H19/18—Attaching, e.g. pasting, the replacement web to the expiring web
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H26/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms
- B65H26/08—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms responsive to a predetermined diameter
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/40—Type of handling process
- B65H2301/46—Splicing
- B65H2301/463—Splicing splicing means, i.e. means by which a web end is bound to another web end
- B65H2301/46327—Ultrasonic sealing
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Abstract
The invention discloses an automatic roll-changing and material-receiving system and method for disposable hygienic product production equipment, wherein in the system, a first coiled material is arranged on a first unreeling mechanism, the first coiled material is delivered by a first unreeling negative pressure delivery device and sent to a main negative pressure delivery device after being unreeled, a second coiled material is arranged on a second unreeling mechanism, and the second coiled material is delivered by a second unreeling negative pressure delivery device and sent to the main negative pressure delivery device after being unreeled; the ultrasonic pressing device is arranged on one side of the main negative pressure conveying device and is arranged in front of the first unwinding negative pressure conveying device and the second unwinding negative pressure conveying device along the conveying direction of the material. The method comprises the steps that the first unreeling negative pressure conveying device and the second unreeling negative pressure conveying device alternately convey coiled materials to the main negative pressure conveying device, and splicing is completed under the cooperation of the main negative pressure conveying device and the ultrasonic laminating device. The invention can replace the traditional manual operation, has high coil changing efficiency and less waste of tailings, and can effectively reduce the production cost.
Description
Technical Field
The invention relates to the technical field of disposable sanitary product manufacturing, in particular to an automatic roll changing and receiving system and method for disposable sanitary product production equipment.
Background
One of the basic units of a disposable sanitary product production device (mainly including a sanitary napkin production device, a paper diaper production device, a pull-up diaper production device, and the like at present) is a material winding and unwinding unit, and the layout of the units is generally as follows: as shown in figure 1, the material unreeling part adopts a motor to drive unreeling shafts to unreel, each material has two unreeling shafts 1 which are mutually standby, when one unreeling shaft is about to use up, the heads and the tails of the two rolls of materials are spliced together through an automatic splicing mechanism 2, continuous material supply is ensured to be used for production, the unreeling shafts are matched with the automatic splicing mechanism and are assisted with a material storage mechanism 3, and the materials are ensured to be replaced without stopping and reducing speed of the equipment. In the current production line, such a mechanism can realize high-speed continuous production of equipment, but the following defects exist in the actual production: (1) in the material unwinding position, after a certain roll of material is used up, a new roll of material needs to be manually sleeved on an unwinding shaft, one production device generally has 5-7 materials for unwinding, and one roll of material is used up every 3-8 minutes, so that the material needs to be replaced once; each time of material changing, firstly manually twisting the unwinding switch, unwinding the paper tube, then taking down the paper tube, sleeving a new coiled material on the air expansion shaft, twisting the switch to tension the coiled material, then pasting an adhesive tape on a stub bar of the material, and then drawing the stub bar of the material into the automatic splicing unit to wait for material receiving; therefore, the operation process of roll changing comprises a series of actions such as reel releasing operation, automatic material receiving unit operation and the like, and although the working process is simple, the flow is complex, so that the station has no automatic operation; in current production facilities, a set of equipment is typically equipped with 3 reloaders. 3 reloaders account for half of 6 starting personnel of the whole set of equipment, the labor cost is high, the working strength is high, and the production cost cannot be effectively controlled. (2) In the automatic splicing unit, when two coiled materials are spliced end to end, a section of coiled material tail to be used up needs to be reserved and fixed on the unwinding shaft so as to be tensioned and spliced with a new coiled material, and after splicing is completed, the section of material (commonly called as 'tail') from the automatic splicing mechanism to the unwinding shaft is discarded, so that raw material loss is easily caused, the raw material loss is large, and one of the reasons why the production cost cannot be effectively controlled is also provided.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an automatic coil changing and receiving system for disposable sanitary product production equipment, which has high coil changing efficiency, no need of manual operation, small waste amount of tailings and capability of effectively reducing the production cost.
The invention also aims to provide an automatic roll changing and receiving method for the disposable sanitary product production equipment, which is realized by the system.
The technical scheme of the invention is as follows: the automatic roll changing and receiving system for the disposable hygienic product production equipment comprises a first unwinding mechanism, a second unwinding mechanism, a first unwinding negative pressure conveying device, a second unwinding negative pressure conveying device, a main negative pressure conveying device and an ultrasonic pressing device, wherein a first coiled material is arranged on the first unwinding mechanism, the first coiled material is conveyed by the first unwinding negative pressure conveying device and is conveyed to the main negative pressure conveying device after being discharged, a second coiled material is arranged on the second unwinding mechanism, and the second coiled material is conveyed by the second unwinding negative pressure conveying device and is conveyed to the main negative pressure conveying device after being discharged; the ultrasonic pressing device is arranged on one side of the main negative pressure conveying device and is arranged in front of the first unwinding negative pressure conveying device and the second unwinding negative pressure conveying device along the conveying direction of the material. The first coiled material and the second coiled material are alternately discharged and are conveyed to the main negative pressure conveying device by the corresponding first unwinding negative pressure conveying device and the corresponding second unwinding negative pressure conveying device, when the material on one coiled material is about to be discharged, the material on the other coiled material is discharged, the materials of the two coiled materials are spliced end to end on the main negative pressure conveying device, and are pressed and fixed by the ultrasonic pressing device, so that the splicing is completed.
The first unwinding mechanism is arranged above the first unwinding negative-pressure conveying device, and the second unwinding mechanism is arranged above the second unwinding negative-pressure conveying device; the first unreeling negative pressure conveying device and the second unreeling negative pressure conveying device are obliquely arranged above the main negative pressure conveying device respectively, material channels are reserved between the low end of the first unreeling negative pressure conveying device and the low end of the second unreeling negative pressure conveying device and the main negative pressure conveying device respectively, and material channels are reserved between the ultrasonic wave pressing device and the main negative pressure conveying device. Generally, the height of a material channel formed between the lower end of the first unreeling negative pressure conveying device and the main negative pressure conveying device is equal to or slightly greater than the thickness of a single-layer coiled material, the height of a material channel formed between the lower end of the second unreeling negative pressure conveying device and the main negative pressure conveying device is equal to or slightly greater than the thickness of two layers of coiled materials, and the height of a material channel formed between the ultrasonic laminating device and the main negative pressure conveying device is also equal to or slightly greater than the thickness of two layers of coiled materials, so that the coiled materials can be ensured to smoothly pass through and can be stably transferred or adsorbed on the main negative pressure conveying device.
The first unwinding mechanism and the second unwinding mechanism are identical in structure and respectively comprise unwinding shafts, oscillating bars and translation assemblies, the middle or upper portion of each oscillating bar is hinged to each translation assembly, the unwinding shafts are arranged on the lower portions of the oscillating bars, and the first coiled materials and the second coiled materials are respectively arranged on the corresponding unwinding shafts. The unwinding shaft is an inflatable shaft and is used for supporting and picking up the corresponding first coiled material or the second coiled material; the unreeling shaft is fixedly installed with the oscillating bar through a bearing, the oscillating bar swings to drive the unreeling shaft to swing, the novel coiled material is mainly picked up when the first coiled material or the second coiled material is changed, the translation assembly actually comprises a mechanical arm joint (the specific structure of the mechanical arm joint is the same as that of the existing universal mechanical arm), the horizontal direction and the vertical direction can be moved, and therefore the oscillating bar is favorable for driving the unreeling shaft to move in the horizontal direction and the vertical direction. This is different from the conventional unwinding portion structure described in the above background art, and in the conventional unwinding portion, the inflatable shaft is fixedly mounted on the frame and is an immovable member. In the invention, the air inflation shaft is arranged at the end part of the manipulator and can move under the driving of the manipulator. When the device is used, after a roll of material is used up, the air inflation shaft is loosened, the rest paper tube is kicked off, the paper tube is separated from the air inflation shaft, the air inflation shaft is driven by a mechanical arm (namely the translation assembly and the swing rod) to translate and swing until the axis of the air inflation shaft is matched with the center of a prepared coiled material, then the prepared coiled material positioned at the lowest position of a coiled material bracket placing groove is penetrated on the air inflation shaft in a translation mode, after the device is fixed, the air inflation shaft drives the prepared coiled material to move to the highest position, then the bottom of the prepared coiled material is adjusted to be lightly pressed on an unreeling conveying mesh belt of a first unreeling negative pressure conveying device or a second unreeling negative pressure conveying device, the prepared coiled material is rotated until the material head is positioned at the starting point of the unreeling conveying mesh belt, and the process is also called as 'stock preparation' or 'reel change'.
And a coiled material bracket for placing the prepared coiled material is further arranged on one side of the first unwinding mechanism and one side of the second unwinding mechanism respectively, an inclined placing groove is formed in the coiled material bracket, and the low end of the placing groove is close to one end of the first unwinding mechanism or the second unwinding mechanism. Can set up many rolls of preparation coiled materials simultaneously in the standing groove, establish the standing groove into the slope form, can make and prepare and have certain difference in height between the coiled material respectively, take the back away when the coiled material that is located the least significant end, its subsequent coiled material can replace the benefit automatically and fall into the least significant.
The first unwinding negative pressure conveying device and the second unwinding negative pressure conveying device are identical in structure and respectively comprise an unwinding conveying mesh belt, an unwinding negative pressure groove and at least two first mesh belt conveying rollers, the unwinding negative pressure groove is of a box structure with a negative pressure interface, the unwinding conveying mesh belt covers the surface of the unwinding negative pressure groove, and the unwinding conveying mesh belt is driven by the first mesh belt conveying rollers to rotate circularly. Wherein, unreel the negative pressure tank and pass through external negative pressure device of negative pressure interface or evacuation unit, make and unreel and keep negative pressure state in the negative pressure tank, the top that unreels the negative pressure tank is full open type or local open type structure, make and unreel the adsorption affinity in the negative pressure tank and act on first coiled material or second coiled material through unreeling conveying mesh belt, adsorb first coiled material or second coiled material on unreeling and carrying the mesh belt surface, it rotates under the drive of each first mesh belt conveying roller to unreel conveying mesh belt, thereby will adsorb on its surperficial first coiled material or second coiled material send into main negative pressure conveyor. One of the first mesh belt conveying rollers is a driving roller, and the rest of the first mesh belt conveying rollers are driven rollers or tensioning rollers.
The main negative pressure conveying device comprises a main conveying mesh belt, a main negative pressure groove and at least two second mesh belt conveying rollers, the main negative pressure groove is also of a box structure with a negative pressure interface, the main conveying mesh belt covers the surface of the main negative pressure groove, and the main conveying mesh belt is driven by the second mesh belt conveying rollers to rotate circularly. The main negative pressure tank is externally connected with a negative pressure device or a vacuumizing unit through a negative pressure interface, so that a negative pressure state is kept in the main negative pressure tank, the top of the main negative pressure tank is of a fully-open or partially-open structure, the adsorption force in the main negative pressure tank acts on a first coiled material or a second coiled material through a main conveying mesh belt, the first coiled material or the second coiled material is adsorbed on the surface of the main conveying mesh belt, and the main conveying mesh belt rotates under the driving of each second mesh belt conveying roller, so that the first coiled material or the second coiled material adsorbed on the surface of the main negative pressure tank is conveyed into a subsequent process. One of the second mesh belt conveying rollers is a driving roller, and the other is a driven roller or a tension roller.
An electric eye is arranged on the outer side of the first unwinding mechanism or the outer side of the first unwinding negative-pressure conveying device, and an electric eye is also arranged on the outer side of the second unwinding mechanism or the outer side of the second unwinding negative-pressure conveying device. The electric eyes are respectively externally connected to a control system of the production equipment, and are mainly used for monitoring the use condition of the first coiled material and the second coiled material, and when the use condition is monitored to be about to be used up (namely material tail appears), the control system starts the access of the prepared coiled material and starts the material preparation.
The invention realizes the automatic roll changing and receiving method for the disposable sanitary product production equipment through the system, which comprises the following steps: the first unreeling negative pressure conveying device and the second unreeling negative pressure conveying device alternately convey coiled materials to the main negative pressure conveying device, and splicing is completed under the cooperation of the main negative pressure conveying device and the ultrasonic laminating device; taking the example that the coiled material in the first unreeling negative pressure conveying device is about to be completely unreeled, the automatic reel changing and receiving method comprises the following steps:
(1) the second unreeling negative pressure conveying device unreels a second coiled material;
(2) the tailing of the first coiled material in the first unreeling negative pressure conveying device is conveyed to be overlapped with the head of the second coiled material by the main negative pressure conveying device to form a splicing part (the length of the splicing part is about 50mm generally, and other tailings are not generated);
(3) the splicing part and the second coiled material are continuously conveyed by the main negative pressure conveying device, and when the splicing part reaches the ultrasonic laminating device, the ultrasonic laminating device is started to laminate and fix the two layers of coiled materials forming the splicing part.
The vacuum degree in the main negative pressure conveying device is larger than the vacuum degrees in the first unreeling negative pressure conveying device and the second unreeling negative pressure conveying device, so that the stable transfer of the first coiled material and the second coiled material can be ensured.
When the first coil material on the first unwinding negative pressure conveying device is completely transferred to the main negative pressure conveying device, the first unwinding mechanism is used for changing the coil, firstly, the swinging rod swings to enable the unwinding shaft to swing to the inclination consistent with the inclination of the placing groove on the coil bracket, then, the swinging rod and the unwinding shaft are driven by the translation assembly to move, a new first coil material center hole is embedded into the unwinding shaft, and finally, the first unwinding mechanism resets, and the first coil material is used for standby.
Compared with the prior art, the invention has the following beneficial effects:
when the automatic roll changing and receiving system and the method are applied to disposable hygienic product production equipment, manual operation of a traditional material roll changing part can be replaced, roll changing efficiency is high, waste amount of tailings is small, waste-free end-to-end connection between new and old materials can be realized, labor cost is low, raw material loss is greatly reduced, and production cost can be effectively reduced.
The automatic roll changing and receiving system and the method are applied to disposable hygienic product production equipment, and through tests, more than half of operators can be reduced for each set of production equipment, the manual operation is greatly reduced, the labor intensity of workers can be effectively reduced, and the production safety is also improved.
Compared with the traditional material roll changing part structure, the automatic roll changing material receiving system is simpler in equipment structure, the arrangement of a storage mechanism can be omitted, and the manufacturing cost of equipment is effectively reduced.
In the automatic coil changing and receiving system, the unwinding mechanism (comprising the first unwinding mechanism and the second unwinding mechanism) adopts a structure similar to a mechanical hand, so that the air inflation shaft has mobility, can automatically pick up standby coiled materials, realizes automatic coil changing and material preparation, and has high automation degree and high coil changing speed.
In the automatic roll changing and receiving system, the first unwinding negative pressure conveying device, the second unwinding negative pressure conveying device and the main negative pressure conveying device adopt a negative pressure adsorption mode to convey the coiled material, the coiled material conveying is stable, the phenomenon of fold or offset is not easy to occur, and better guarantee is provided for subsequent production and processing.
Drawings
Fig. 1 is a schematic view of a conventional material housing unit.
Fig. 2 is a schematic diagram of the automatic roll-changing material receiving system.
Fig. 3 is a schematic structural diagram of an unwinding mechanism and a coil cradle.
Fig. 4 is a structural view of the unwinding mechanism and the coil cradle in another direction.
Fig. 5 is a schematic diagram of the unwinding mechanism during material preparation.
In the above figures, the components indicated by the respective reference numerals are as follows: 1 is unreeling shaft, 2 is automatic splicing mechanism, 3 is storage mechanism, 4 is first unwinding mechanism, 5 is second unwinding mechanism, 6 is first unreeling negative pressure conveyor, 7 is second unreeling negative pressure conveyor, 8 is main negative pressure conveyor, 9 is ultrasonic wave compression fittings, 10 is first coiled material, 11 is the second coiled material, 12 is the pendulum rod, 13 is the translation subassembly, 14 is the coiled material bracket, 15 is the standing groove, 16 is the preparation coiled material, 17 is for unreeling conveying mesh belt, 18 is for unreeling negative pressure tank, 19 is first mesh belt conveying roller, 20 is main conveying mesh belt, 21 is main negative pressure tank, 22 is second mesh belt conveying roller.
Detailed Description
The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited thereto.
Examples
The automatic roll changing and receiving system for the disposable hygienic product production equipment comprises a first unwinding mechanism 4, a second unwinding mechanism 5, a first unwinding negative pressure conveying device 6, a second unwinding negative pressure conveying device 7, a main negative pressure conveying device 8 and an ultrasonic laminating device 9, wherein a first coiled material 10 is arranged on the first unwinding mechanism, the first coiled material is conveyed by the first unwinding negative pressure conveying device and sent to the main negative pressure conveying device after being unwound, a second coiled material 11 is arranged on the second unwinding mechanism, and the second coiled material is conveyed by the second unwinding negative pressure conveying device and sent to the main negative pressure conveying device after being unwound; the ultrasonic pressing device is arranged on one side of the main negative pressure conveying device and is arranged in front of the first unwinding negative pressure conveying device and the second unwinding negative pressure conveying device along the conveying direction of the material. The first coiled material and the second coiled material are alternately discharged and are conveyed to the main negative pressure conveying device by the corresponding first unwinding negative pressure conveying device and the corresponding second unwinding negative pressure conveying device, when the material on one coiled material is about to be discharged, the material on the other coiled material is discharged, the materials of the two coiled materials are spliced end to end on the main negative pressure conveying device, and are pressed and fixed by the ultrasonic pressing device, so that the splicing is completed.
In this embodiment, the first unwinding mechanism is arranged above the first unwinding negative pressure conveying device, and the second unwinding mechanism is arranged above the second unwinding negative pressure conveying device; the first unreeling negative pressure conveying device and the second unreeling negative pressure conveying device are obliquely arranged above the main negative pressure conveying device respectively, material channels are reserved between the low end of the first unreeling negative pressure conveying device and the low end of the second unreeling negative pressure conveying device and the main negative pressure conveying device respectively, and material channels are reserved between the ultrasonic wave pressing device and the main negative pressure conveying device. Generally, the height of a material channel formed between the lower end of the first unreeling negative pressure conveying device and the main negative pressure conveying device is equal to or slightly greater than the thickness of a single-layer coiled material, the height of a material channel formed between the lower end of the second unreeling negative pressure conveying device and the main negative pressure conveying device is equal to or slightly greater than the thickness of two layers of coiled materials, and the height of a material channel formed between the ultrasonic laminating device and the main negative pressure conveying device is also equal to or slightly greater than the thickness of two layers of coiled materials, so that the coiled materials can be ensured to smoothly pass through and can be stably transferred or adsorbed on the main negative pressure conveying device.
The first unwinding mechanism and the second unwinding mechanism are identical in structure and respectively comprise unwinding shafts 1, swing rods 12 and translation assemblies 13 as shown in fig. 3, the middle or upper portions of the swing rods are hinged to the translation assemblies, the unwinding shafts are arranged at the lower portions of the swing rods, and the first coiled materials and the second coiled materials are respectively arranged on the corresponding unwinding shafts. The unwinding shaft is an inflatable shaft and is used for supporting and picking up the corresponding first coiled material or the second coiled material; the unreeling shaft is fixedly installed with the oscillating bar through a bearing, the oscillating bar swings to drive the unreeling shaft to swing, the novel coiled material is mainly picked up when the first coiled material or the second coiled material is changed, the translation assembly actually comprises a mechanical arm joint (the specific structure of the mechanical arm joint is the same as that of the existing universal mechanical arm), the horizontal direction and the vertical direction can be moved, and therefore the oscillating bar is favorable for driving the unreeling shaft to move in the horizontal direction and the vertical direction. This is different from the conventional unwinding portion structure described in the above background art, and in the conventional unwinding portion, the inflatable shaft is fixedly mounted on the frame and is an immovable member. In the invention, the air inflation shaft is arranged at the end part of the manipulator and can move under the driving of the manipulator. When the device is used, after a roll of material is used up, the air inflation shaft is loosened, the rest paper tube is kicked off, the paper tube is separated from the air inflation shaft, the air inflation shaft is driven by a mechanical arm (namely the translation assembly and the swing rod) to translate and swing until the axis of the air inflation shaft is matched with the center of a prepared coiled material, then the prepared coiled material positioned at the lowest position of a coiled material bracket placing groove is penetrated on the air inflation shaft in a translation mode, after the device is fixed, the air inflation shaft drives the prepared coiled material to move to the highest position, then the bottom of the prepared coiled material is adjusted to be lightly pressed on an unreeling conveying mesh belt of a first unreeling negative pressure conveying device or a second unreeling negative pressure conveying device, the prepared coiled material is rotated until the material head is positioned at the starting point of the unreeling conveying mesh belt, and the process is also called as 'stock preparation' or 'reel change'.
As shown in fig. 3 or 4, a coil bracket for placing a prepared coil is further disposed on one side of the first unwinding mechanism and one side of the second unwinding mechanism, and an inclined placing slot 15 is disposed on the coil bracket 14, and a lower end of the placing slot is an end close to the first unwinding mechanism or the second unwinding mechanism. The placing groove can be internally provided with a plurality of prepared coiled materials 16 at the same time, the placing groove is designed to be inclined, certain height difference can be formed among the prepared coiled materials, and when the coiled material at the lowest end is taken away, the subsequent coiled material can automatically replace and fall into the lowest position (as shown in figure 5).
As shown in fig. 2, the first unwinding negative pressure conveying device and the second unwinding negative pressure conveying device have the same structure, and respectively include an unwinding conveying mesh belt 17, an unwinding negative pressure groove 18, and at least two first mesh belt conveying rollers 19, the unwinding negative pressure groove is a box structure with a negative pressure interface, the unwinding conveying mesh belt covers the surface of the unwinding negative pressure groove, and the unwinding conveying mesh belt is driven by each first mesh belt conveying roller to rotate circularly. Wherein, unreel the negative pressure tank and pass through external negative pressure device of negative pressure interface or evacuation unit, make and unreel and keep negative pressure state in the negative pressure tank, the top that unreels the negative pressure tank is full open type or local open type structure, make and unreel the adsorption affinity in the negative pressure tank and act on first coiled material or second coiled material through unreeling conveying mesh belt, adsorb first coiled material or second coiled material on unreeling and carrying the mesh belt surface, it rotates under the drive of each first mesh belt conveying roller to unreel conveying mesh belt, thereby will adsorb on its surperficial first coiled material or second coiled material send into main negative pressure conveyor. One of the first mesh belt conveying rollers is a driving roller, and the rest of the first mesh belt conveying rollers are driven rollers or tensioning rollers.
As shown in fig. 2, the main negative pressure conveying device includes a main conveying mesh belt 20, a main negative pressure groove 21 and at least two second mesh belt conveying rollers 22, the main negative pressure groove is also a box structure with a negative pressure interface, the main conveying mesh belt covers the surface of the main negative pressure groove, and the main conveying mesh belt is driven by each second mesh belt conveying roller to rotate circularly. The main negative pressure tank is externally connected with a negative pressure device or a vacuumizing unit through a negative pressure interface, so that a negative pressure state is kept in the main negative pressure tank, the top of the main negative pressure tank is of a fully-open or partially-open structure, the adsorption force in the main negative pressure tank acts on a first coiled material or a second coiled material through a main conveying mesh belt, the first coiled material or the second coiled material is adsorbed on the surface of the main conveying mesh belt, and the main conveying mesh belt rotates under the driving of each second mesh belt conveying roller, so that the first coiled material or the second coiled material adsorbed on the surface of the main negative pressure tank is conveyed into a subsequent process. One of the second mesh belt conveying rollers is a driving roller, and the other is a driven roller or a tension roller.
In addition, an electric eye is further arranged on the outer side of the first unwinding mechanism or the outer side of the first unwinding negative pressure conveying device, and an electric eye is further arranged on the outer side of the second unwinding mechanism or the outer side of the second unwinding negative pressure conveying device. The electric eyes are respectively externally connected to a control system of the production equipment, and are mainly used for monitoring the use condition of the first coiled material and the second coiled material, and when the use condition is monitored to be about to be used up (namely material tail appears), the control system starts the access of the prepared coiled material and starts the material preparation.
The automatic roll changing and receiving method for the disposable sanitary product production equipment, which is realized by the system, comprises the following steps: the first unreeling negative pressure conveying device and the second unreeling negative pressure conveying device alternately convey coiled materials to the main negative pressure conveying device, and splicing is completed under the cooperation of the main negative pressure conveying device and the ultrasonic laminating device; taking the example that the coiled material in the first unreeling negative pressure conveying device is about to be completely unreeled, the automatic reel changing and receiving method comprises the following steps:
(1) the second unreeling negative pressure conveying device unreels a second coiled material;
(2) the tailing of the first coiled material in the first unreeling negative pressure conveying device is conveyed to be overlapped with the head of the second coiled material by the main negative pressure conveying device to form a splicing part (the length of the splicing part is about 50mm generally, and other tailings are not generated);
(3) the splicing part and the second coiled material are continuously conveyed by the main negative pressure conveying device, and when the splicing part reaches the ultrasonic laminating device, the ultrasonic laminating device is started to laminate and fix the two layers of coiled materials forming the splicing part.
The vacuum degree in the main negative pressure conveying device is greater than the vacuum degrees in the first unreeling negative pressure conveying device and the second unreeling negative pressure conveying device, and therefore stable transfer of the first coiled material and the second coiled material can be guaranteed.
When the first coil material on the first unwinding negative pressure conveying device is completely transferred to the main negative pressure conveying device, the first unwinding mechanism is used for changing the coil, firstly, the swinging rod swings to enable the unwinding shaft to swing to the inclination consistent with the inclination of the placing groove on the coil bracket, then, the swinging rod and the unwinding shaft are driven by the translation assembly to move, a new first coil material center hole is embedded into the unwinding shaft, and finally, the first unwinding mechanism resets, and the first coil material is used for standby. The unwinding shaft is an unpowered unwinding shaft and can move under the action of the oscillating bar and the translation assembly, so that the unwinding shaft can move in the material preparation process and accurate reel replacement is guaranteed; on the other hand, when the unwinding negative pressure groove at the bottom of the coiled material is used for unwinding, the unwinding shaft can enable the coiled material to be tightly attached to the unwinding negative pressure groove under the action of gravity, and effective unwinding is guaranteed. And the setting of electric eye can real-time detection coiled material put, and production facility control system starts corresponding mechanism according to the demand, realizes automated processing, does not need artifical rubberized fabric, does not need people to intervene either.
As mentioned above, the present invention can be better realized, and the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention; all equivalent changes and modifications made according to the present disclosure are intended to be covered by the scope of the claims of the present invention.
Claims (9)
1. The automatic roll changing and receiving system for the disposable hygienic product production equipment is characterized by comprising a first unwinding mechanism, a second unwinding mechanism, a first unwinding negative-pressure conveying device, a second unwinding negative-pressure conveying device, a main negative-pressure conveying device and an ultrasonic laminating device, wherein a first coiled material is arranged on the first unwinding mechanism, the first coiled material is conveyed by the first unwinding negative-pressure conveying device and is conveyed to the main negative-pressure conveying device after being discharged, a second coiled material is arranged on the second unwinding mechanism, and the second coiled material is conveyed by the second unwinding negative-pressure conveying device and is conveyed to the main negative-pressure conveying device after being discharged; the ultrasonic pressing device is arranged on one side of the main negative pressure conveying device and is arranged in front of the first unwinding negative pressure conveying device and the second unwinding negative pressure conveying device along the conveying direction of the material;
the main negative pressure conveying device comprises a main conveying mesh belt, a main negative pressure groove and at least two second mesh belt conveying rollers, the main negative pressure groove is also of a box structure with a negative pressure interface, the main conveying mesh belt covers the surface of the main negative pressure groove, and the main conveying mesh belt is driven by the second mesh belt conveying rollers to rotate circularly.
2. The automatic roll-changing and material-receiving system for the disposable sanitary product production equipment according to claim 1, wherein the first unwinding mechanism is arranged above the first unwinding negative-pressure conveying device, and the second unwinding mechanism is arranged above the second unwinding negative-pressure conveying device; the first unreeling negative pressure conveying device and the second unreeling negative pressure conveying device are obliquely arranged above the main negative pressure conveying device respectively, material channels are reserved between the low end of the first unreeling negative pressure conveying device and the low end of the second unreeling negative pressure conveying device and the main negative pressure conveying device respectively, and material channels are reserved between the ultrasonic wave pressing device and the main negative pressure conveying device.
3. The automatic roll-changing and material-receiving system for the disposable sanitary product production equipment according to claim 1, wherein the first unwinding mechanism and the second unwinding mechanism are identical in structure and respectively comprise an unwinding shaft, a swing rod and a translation assembly, the middle portion or the upper portion of the swing rod is hinged to the translation assembly, the unwinding shaft is arranged at the lower portion of the swing rod, and the first coiled material and the second coiled material are respectively arranged on the corresponding unwinding shafts.
4. The automatic coil changing and receiving system for the disposable hygienic product production equipment as claimed in claim 1, wherein a coil bracket for placing the prepared coil is further provided on one side of the first unwinding mechanism and one side of the second unwinding mechanism, respectively, and an inclined placement slot is provided on the coil bracket, and a lower end of the placement slot is an end close to the first unwinding mechanism or the second unwinding mechanism.
5. The automatic roll changing and receiving system for the disposable hygienic product production equipment as claimed in claim 1, wherein the first unwinding negative pressure conveying device and the second unwinding negative pressure conveying device are identical in structure and respectively comprise an unwinding conveying mesh belt, an unwinding negative pressure groove and at least two first mesh belt conveying rollers, the unwinding negative pressure groove is of a box structure with a negative pressure interface, the unwinding conveying mesh belt covers the surface of the unwinding negative pressure groove, and the unwinding conveying mesh belt is driven by each first mesh belt conveying roller to rotate circularly.
6. The automatic roll changing and receiving system for the disposable sanitary product production equipment according to claim 1, wherein an electric eye is arranged outside the first unwinding mechanism or outside the first unwinding negative pressure conveying device, and an electric eye is also arranged outside the second unwinding mechanism or outside the second unwinding negative pressure conveying device.
7. The automatic roll changing and receiving method for the disposable hygienic product production equipment is realized according to any one of claims 1 to 6, and is characterized in that the first unwinding negative pressure conveying device and the second unwinding negative pressure conveying device alternately convey the coiled materials to the main negative pressure conveying device, and splicing is completed under the cooperation of the main negative pressure conveying device and the ultrasonic laminating device; taking the example that the coiled material in the first unreeling negative pressure conveying device is about to be completely unreeled, the automatic reel changing and receiving method comprises the following steps:
(1) the second unreeling negative pressure conveying device unreels a second coiled material;
(2) the tail material of the first coiled material in the first unreeling negative pressure conveying device is conveyed to be overlapped with the head of the second coiled material by the main negative pressure conveying device to form a splicing part;
(3) the splicing part and the second coiled material are continuously conveyed by the main negative pressure conveying device, and when the splicing part reaches the ultrasonic laminating device, the ultrasonic laminating device is started to laminate and fix the two layers of coiled materials forming the splicing part.
8. The automatic roll-changing and material-receiving method for the disposable sanitary product production equipment according to claim 7, wherein the vacuum degree in the main negative pressure conveying device is greater than the vacuum degrees in the first unwinding negative pressure conveying device and the second unwinding negative pressure conveying device.
9. The automatic roll changing and receiving method for the disposable hygienic product production equipment as recited in claim 7, wherein when the first roll material on the first unwinding negative pressure conveying device has been completely transferred to the main negative pressure conveying device, the first unwinding mechanism performs roll changing by swinging the swing link to swing the unwinding shaft to an inclination consistent with that of the placement slot on the roll material bracket, then the swing link and the unwinding shaft are driven by the translation assembly to move to embed a new center hole of the first roll material into the unwinding shaft, and finally the first unwinding mechanism is reset, and the first roll material is ready for use.
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| CN202010492640.4A CN111620158B (en) | 2020-06-03 | 2020-06-03 | Automatic roll changing and receiving system and method for disposable sanitary product production equipment |
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| US5954292A (en) * | 1996-11-08 | 1999-09-21 | Fuji Photo Film Co., Ltd. | Method and apparatus for splicing web |
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