CN113277189A

CN113277189A - Automatic towel folding, stacking and packaging device

Info

Publication number: CN113277189A
Application number: CN202110566206.0A
Authority: CN
Inventors: 刘航东
Original assignee: Suzhou Transparent Electronic Technology Co Ltd
Current assignee: Suzhou Transparent Electronic Technology Co Ltd
Priority date: 2021-05-24
Filing date: 2021-05-24
Publication date: 2021-08-20

Abstract

The invention relates to the technical field of automatic towel processing, in particular to an automatic towel folding, stacking and packaging method, which comprises a folding process, wherein the folding process comprises a primary folding process, and the primary folding process comprises the following steps: clamping the material to be folded along a preset folding track; arranging the turnover airflow in a direction perpendicular to the preset crease track; the turnover airflow is a planar airflow surface, the length of the airflow surface is more than or equal to that of the area to be turned, and the included angle between the airflow surface and the lower clamping surface of the material to be turned ranges from 25 degrees to 35 degrees; the contact point of the turnover airflow and the lower clamping surface is positioned in front of the edge of the material to be folded. The device realizes the automatic production of the towel in the whole process of feeding, packaging and forming through the feeding process, the folding process, the stacking process and the packaging process which are sequentially arranged along the material conveying direction, thereby realizing the automatic operation of all the procedures of towel packaging and processing, and reducing the participation of personnel to improve the production efficiency and reduce the occurrence of secondary pollution.

Description

Automatic towel folding, stacking and packaging device

Technical Field

The invention relates to the technical field of automatic towel processing, in particular to an automatic towel folding, stacking and packaging device.

Background

With the progress of the times and the development of the society, people pay more attention to environmental protection and life quality while the living standard of people is improved. Meanwhile, the napkin series used in restaurants and hotels slowly fade out of sight of people, and can be replaced by the recyclable disinfection towel. In order to improve the aesthetic degree, the sterilized towels are usually packaged into various forms, and in order to improve the packaging quality and efficiency, various towel processing and packaging machines appear in the market, but the existing towel processing and packaging equipment cannot realize a full-automatic operation flow, needs manual participation in some procedures, and accordingly, the production efficiency of the towel packaging process is low, and the full-automatic towel processing operation cannot be realized. Meanwhile, due to the adoption of manual participation, secondary pollution is easily caused to the disinfected towel, and the towel cannot meet the industrial sanitary standard easily. In addition, the existing folding mode has the defects that the folding mechanism and the process are complex and the efficiency is low, and meanwhile, the upper and lower materials are easy to appear when stacked, so that the distance deviation is large, and the later bagging is influenced.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide an automatic towel folding, stacking and packaging device, which can realize automatic packaging and processing of towels, has better folding and stacking effects and can ensure the final packaging effect.

In order to achieve the above purpose, the invention provides the following technical scheme:

an automatic towel folding, stacking and packaging method comprises a folding process, wherein the folding process comprises a primary folding process, and the primary folding process comprises the following steps:

clamping the material to be folded along a preset folding track;

arranging the turnover airflow in a direction perpendicular to the preset crease track;

the turnover airflow is a planar airflow surface, the length of the airflow surface is more than or equal to that of the area to be turned, and the included angle between the airflow surface and the lower clamping surface of the material to be turned ranges from 25 degrees to 35 degrees;

the contact point of the turnover airflow and the lower clamping surface (bearing surface) is positioned in front of the edge of the material to be folded. Usually, the distance between the contact point and the edge of the material to be folded is 5-20 mm, the method folds the towel through the folding airflow, and the method is simple in structure and higher in efficiency.

In the present invention, further, the airflow surface is a continuous airflow surface having uniform airflow intensity.

In the invention, further, the airflow surface is formed by arranging a plurality of groups of airflow beams which are arranged at intervals.

In the invention, further, the method also comprises a feeding process, a stacking process and a packaging process;

the feeding process is used for placing materials into the processing system;

the folding process is used for folding the material into a preset shape;

the stacking process is used for stacking materials into a material stack with a preset thickness;

the packaging process is used for loading the material stack into a packaging bag and sealing the packaging bag.

In the present invention, further, the folding process includes a secondary folding process, and the secondary folding process includes the following steps:

placing the material which is turned by the primary turning process to a preset folding position;

then inserting the materials into the space between the two groups of oppositely folded conveyor belts for the folded plate along the preset crease track of the secondary folding, and then rotating the two groups of oppositely folded conveyor belts;

and (5) sending the materials which are turned over for the second time out by a discharge conveyor belt.

In the invention, further, the discharge conveyor belt and the doubling conveyor belt positioned right above the discharge conveyor belt are arranged in parallel at intervals.

In the present invention, further, the stacking process includes a stacking process, and the stacking process includes the steps of:

placing the materials right above the stacking tray and standing;

the materials fall freely onto a stacking tray;

after the last material falls, the stacking tray descends for a suitable distance to ensure that the falling distance of the next material to be fallen is always consistent.

In the invention, the stacking tray further comprises a supporting plate and a plurality of groups of supporting rods which are vertically arranged on the supporting plate in an array manner, and the top ends of the plurality of groups of supporting rods form a lifting plane. This scheme is through setting up the multiunit die-pin and there is the clearance between each die-pin, this clearance is convenient for subsequent centre gripping hand on the one hand to get into, simultaneously also because the existence in clearance makes when first towel falls to lifting plane, the air between towel lower part and the lifting plane can be discharged fast, great lateral displacement is difficult to take place for the towel from this, great deviation can not appear in the position when guaranteeing the towel whereabouts from this, the towel position of material buttress bottom can not too shift when guaranteeing towel or other light material piles up, and then the convenience when guaranteeing follow-up bagging-off.

In the present invention, further, before the packaging bag is completely sealed by the packaging process, a negative pressure state is formed in the packaging bag, and then the packaging of the rest part is performed.

Compared with the prior art, the invention has the beneficial effects that:

the device realizes the automatic production of the towels in the whole process of feeding, packaging and forming through the feeding process, the folding process, the stacking process and the packaging process which are sequentially arranged along the material conveying direction, thereby realizing the automatic operation of all the procedures of towel packaging and processing, reducing the participation of personnel, improving the production efficiency and reducing the occurrence of secondary pollution.

In addition, in the folding process, the folding airflow is blown to the towel clamped between the pressing plate and the bearing surface, the flexible cloth which is not clamped between the pressing plate and the bearing surface and is close to one side of the folding airflow can be folded, the crease can be limited and molded by the edge end of the pressing plate, the folding method is extremely high in efficiency, and the structure for realizing the folding method is simple. Meanwhile, the towel is folded for multiple times in different directions by the combination of the transverse folding device and the conveyor belt assembly, so that the folding patterns of the towel are various and the folding effect is good.

Meanwhile, in the stacking process, the stacking tray is set to be in a form of comprising a bearing plate and a plurality of groups of support rods fixed on the bearing plate in an array mode, and the top ends of the plurality of groups of support rods form a lifting plane. The stacking tray with the structure is convenient for clamping and transferring the piled towels in the follow-up process, the clamping hands penetrate through the clamping channels among the groups of support rods and clamp the piled towels, the flatness of the towels at the lower part in the towel pile clamped in the structure is good, and the attractiveness of the packaged towels in the later stage can not be influenced. And the first light material can fall naturally, so that the position of the falling point can not deviate greatly.

Drawings

FIG. 1 is a schematic diagram of the general structure of an apparatus for carrying out the process of the present invention.

FIG. 2 is a schematic view showing the overall structure of the stacking unit of the present invention.

FIG. 3 is a schematic view showing the overall structure of the stacking mechanism of the present invention.

Fig. 4 is a schematic view showing the overall structure of the lifting unit of the stacking mechanism of the present invention.

Fig. 5 is a schematic view of the overall structure of the clamping and releasing mechanism of the present invention.

FIG. 6 is a schematic diagram of the general structure of the transport unit of the present invention.

Fig. 7 is a schematic diagram of the overall structure of the packaging unit of the present invention.

Fig. 8 is a schematic view of a partial structure of a loading assembly embodied in a packaging unit.

FIG. 9 is a schematic view of a packaging assembly in a packaging unit embodied in a packaging frame;

fig. 10 is a fragmentary enlarged view of a portion a of fig. 9.

Fig. 11 is a schematic structural view of a packaging frame in a packaging unit.

Fig. 12 is an enlarged schematic view of B in fig. 11.

Fig. 13 is a schematic view of the overall structure of the receiving and packaging system.

Fig. 14 is a schematic view of the overall structure of the feeding unit in the present invention.

Fig. 15 is a schematic structural view of the gripping mechanism of the present invention.

Fig. 16 is a schematic view of the overall structure of the folding unit of the present invention.

Fig. 17 is a schematic view showing the overall structure of a folding mechanism in the folding unit of the present invention.

FIG. 18 is a side view showing the arrangement of the respective belts in the transverse direction folding-in-half apparatus in the present invention.

In the drawings: 1. a stacking unit; 11. a clamping and placing mechanism; 111. a lower supporting plate; 112. pressing the hand; 113. a cross beam; 114. transversely moving the sliding rail; 12. a stacking mechanism; 121. a support plate; 122. a support rod; 123. a lifting belt assembly; 124. a synchronous belt; 125. tensioning the roller; 126. a support frame; 13. a main frame body; 141. a holding section; 142. a guide section; 143. a synchronous support; 144. correcting the channel;

2. a transfer unit; 21. a gripper jaw; 22. a one-way displacement mechanism; 23. a clamping plate; 24. a clamping drive mechanism; 25. adjusting a fluted disc; 26. adjusting the rack;

3. a packaging unit; 31. a packaging frame; 311. a feeding frame; 312. a smoothing frame; 32. a feeding assembly; 321. a material storage rack; 322. a feeding tray frame; 323. a feeding motor; 324. a slide cylinder; 325. a feeding sucker; 33. a delivery assembly; 331. a drive source; 332. a spacer; 333. a material suction conveyor belt; 334. a suction bag suction port; 34. a bag opening mechanism; 35. a suction bag assembly; 351. opening a bag and sucking a disc; 352. a movable seat; 353. a position control member; 354. a support member; 36. a bag opening assembly; 361. a displacement cylinder; 362. a shifting seat; 363. a bag opening motor; 364. a guide seat; 365. opening a bag; 37. a position control assembly; 371. a position control motor; 372. a position control belt; 373. a position control seat; 38. a packaging assembly; 381. a bag pressing cylinder; 382. pressing the bag piece; 383. heat-sealing the cylinder; 384. heat sealing; 385. ejecting out the cylinder; 386. folding the bag piece; 39. a smoothing assembly; 391. smoothing the motor; 392. smoothing the belt; 393. flattening the seat; 394. a smoothing member;

4. a feeding unit; 411. placing a material plate; 412. marking a line; 413. a lifting assembly; 421. a transfer drive; 422. a transfer slide rail; 431. connecting a support arm; 432. a lifting drive member; 433. a gripper assembly; 434. mounting a bracket; 435. a guide sliding sleeve; 436. a guide bar; 441. a sensing unit; 451. a buffer slide block; 452. an elastic member; 453. a compression screw;

5. a folding unit; 51. a conveyor belt assembly; 52. a gas supply device; 53. a compression plate; 541. a traversing assembly; 542. a longitudinal movement component; 543. a slide plate; 55. detecting a void; 551. a sensor; 56. folding the conveyor belt in half; 561. a secondary conveyor belt; 57. a discharge conveyor belt; 58. folding plates are folded; 581. a gantry frame body; 59. a material guide plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The feeding process, the folding process, the stacking process and the packaging process related in the invention can be realized by the automatic towel folding, stacking and packaging device in the embodiment, and the following description is provided for the device structure used by each corresponding process in the device:

referring to fig. 1 to 18, an automatic towel folding, stacking and packaging device includes a feeding unit 4, a folding unit 5, a stacking unit 1, a transferring unit 2 and a packaging unit 3, which are sequentially arranged along a material conveying direction, as shown in fig. 1, a towel to be processed is placed on two sets of blank placing platforms in the feeding unit 4, after the placement is completed, a transferring mechanism drives a clamping mechanism to continuously clamp and convey the towel placed on the blank placing platform on one side to a specified target area, namely, a feeding port of the folding unit 5, after the towel on one side is clamped, the towel placed on the blank placing platform on the other side is clamped, and meanwhile, the towel is placed again on the blank placing platform on the free side to prepare for the next clamping operation. Then the towel is conveyed into a folding unit 5 by a conveyor belt to be folded in a designated pattern form, the conveyed materials are conveyed into a material inlet of a stacking unit 1 by the conveyor belt after being folded into a designated shape by the folding unit 5, the materials are stacked into a stack by the stacking unit 1, then the materials are clamped by a transfer unit 2 and conveyed into a packaging unit 3 to be bagged and heat-sealed, and the packaging processing of the whole towel can be completed.

The feeding unit 4 please refer to fig. 14 to fig. 15 at the same time;

the device comprises a material blank placing platform, a transfer mechanism and a clamping mechanism, wherein the clamping mechanism is fixedly arranged on the transfer mechanism, and the transfer mechanism is used for driving the clamping mechanism to reciprocate between the material blank placing platform and a target arrival area. Usually, the transferring mechanism drives the gripping mechanism to reciprocate between the towel overlapping area of the material placing plate 411 and the conveyor belt, so as to grip the towel and then place the towel on the conveyor belt, and then the towel is transferred to the next station by the conveyor belt for processing, and the mark line 412 of the corresponding placing area is defined on the material placing plate 411 in advance according to the specification of the towel, thereby indicating the position for preventing the towel on the material placing plate 411.

As shown in fig. 14, the material blank placing platform includes a material placing plate 411 and a lifting assembly 413, the material placing plate 411 is fixed to a movable portion of the lifting assembly 413, and the lifting assembly 413 drives the material placing plate 411 to move on a lifting path. The material placing plate 411 can move in the vertical direction under the driving of the lifting assembly 413, and the lifting assembly 413 can drive the material placing plate 411 to move upwards by the thickness of one towel every time when one towel is clamped and taken away, so that the towel to be clamped by the clamping mechanism is ensured to be in the same position state every time the clamping mechanism clamps the towel, therefore, the clamping mechanism only needs to execute the same clamping action every time the clamping operation is carried out, and the operation action of the clamping mechanism is not required to be adjusted adaptively because the stacking height of the towel to be clamped is changed.

As shown in fig. 14, the blank placing platform further includes a sensing unit 441, the sensing unit 441 is fixedly disposed on the lifting path of the material placing plate 411, the sensing unit 441 is a photoelectric sensor 551 and is fixed on the lifting path of the material placing plate 411 for detecting the height of the towels placed on the material placing plate 411, when the stacking height of the remaining towels is reduced after a towel is taken away by the clamp, the photoelectric sensor 551 cannot detect the information of the towels, at this time, the photoelectric sensor 551 sends a signal to the controller, the controller controls the lifting assembly 413 to move so as to drive the material placing plate 411 to move upwards, and when the photoelectric sensor 551 can detect the remaining towels, the controller sends a signal to the controller and controls the lifting assembly 413 to stop moving.

As shown in fig. 14 and 15, the gripping mechanism includes a gripping assembly 433, the gripping assembly 433 includes a plurality of sets of gripping fingers and a mounting bracket 434, and the plurality of sets of gripping fingers are fixedly connected to the mounting bracket 434. The mounting bracket 434 comprises a plurality of groups of connecting auxiliary rods, wherein the connecting auxiliary rods are mutually overlapped to form a mounting bracket body in a required shape, every two groups of connecting auxiliary rods are connected in a sliding manner, each group of connecting auxiliary rods is provided with a sliding groove, the joints of the two groups of connecting auxiliary rods which are arranged in an intersecting manner are connected through a compression screw 453, when the positions of the two groups of connecting auxiliary rods need to be adjusted, the compression screw 453 is unscrewed, and at the moment, the two groups of connecting auxiliary rods can freely slide, so that the structural position of the mounting bracket body can be adjusted. A buffer assembly capable of performing compensation movement along the direction perpendicular to the plane of the mounting bracket 434 is arranged between the clamping fingers and the connecting auxiliary rod. The buffer assembly can provide compensation in a distance when the clamping fingers press on the towel, and can also provide buffer for downward pressure, so that the service life of the clamping fingers can be prolonged, and meanwhile, each group of clamping fingers can be in contact with the towel through the compensation in the distance due to the fact that the upper surface of the piled towel is not a flat horizontal plane, and the clamping effect is guaranteed.

As shown in fig. 15, the buffering assembly includes a fixing bracket, a buffering slider 451, and an elastic member 452, wherein the buffering slider 451 is slidably disposed on the fixing bracket, and the elastic member 452 is connected between the fixing bracket and the buffering slider 451 to provide an elastic force for making the buffering slider 451 approach the bottom of the fixing bracket. The elastic member 452 may be provided as a spring.

As shown in fig. 15, the gripping mechanism further includes a connecting arm 431, a lifting unit is disposed at one end of the connecting arm 431, which is connected to the mounting bracket 434, the lifting unit includes a lifting driving member 432 and a guiding assembly, the lifting driving member 432 is connected to the central position of the mounting bracket 434, the guiding assembly includes a plurality of sets of guiding sliding sleeves 435 and guiding rods 436 slidably disposed in the guiding sliding sleeves 435, the guiding sliding sleeves 435 are fixed on the connecting arm 431, and the guiding rods 436 are fixedly connected to the mounting bracket 434. Through the lifting driving part 432 and the guiding component, the stability of the clamping mechanism in moving in the vertical direction can be ensured.

As shown in fig. 14, the transfer mechanism includes a transfer rail 422 and a transfer driver 421, the connecting arm 431 is slidably disposed on the transfer rail 422, and the connecting arm 431 is driven by the transfer driver 421 to move on the transfer rail 422 to reach the target position. The transfer driving assembly may be provided as an electric cylinder, and two sets of material blank placing platforms may be placed at symmetrical positions with respect to the central plane of the transfer slide 422 in order to improve the working efficiency. The symmetrical arrangement can reduce the difficulty in compiling the operation program of the clamping mechanism and facilitate the compilation and execution of the control command.

The folding unit 5, please refer to fig. 16 to 18 at the same time;

referring to fig. 16 to 17, the folding unit 5 includes a folding mechanism, the folding mechanism includes a supporting surface, at least one set of pressing plates 53 and an air supply device 52 for providing a turning air flow, the supporting surface is an upper surface of the conveyor belt in an actual towel production line, and when the towels are placed on the conveyor belt, the towels sequentially pass through the folding mechanisms along with the conveying of the conveyor belt, and are correspondingly folded. The pressing plate 53 is arranged opposite to the bearing surface to form a clamping space, the airflow direction of the turning airflow is perpendicular to one side edge of the pressing plate 53, so that after the towel is fed into the clamping space, the towel can be turned over under the blowing of the turning airflow, and one side edge of the pressing plate 53 is coincided with the crease of the folded object. The sides of the compression plate 53 may be creased during processing, typically in the form of straight creases.

The turnover airflow is a planar airflow surface, the length of the airflow surface is more than or equal to that of the area to be turned, and the included angle between the airflow surface and the bearing surface ranges from 25 degrees to 35 degrees. The turning air flow can be provided by an existing air knife or other existing equipment which can provide uniform and continuous planar air flow. The strength of the steam flow provided by each part of the planar steam flow is consistent, so that the towel folding device has a good folding effect on towels with uniform texture.

In addition, the airflow surface can also be formed by arranging a plurality of groups of airflow beams which are arranged at intervals. The steam supply equipment comprises a shell and a plurality of groups of blowing pipelines fixed on the shell at intervals, wherein the plurality of groups of blowing pipelines are respectively connected with different air pumps, so that the air flow force blown out by each blowing pipeline can be adjusted to be different. Therefore, the turnover mechanism is more suitable for being applied to turnover operation of fabrics with different turnover difficulties at different positions, the turnover effect can be ensured, and the waste of strength is avoided.

As shown in fig. 16, the supporting surface and the pressing plate 53 are connected by a moving mechanism, the moving mechanism includes a traverse component 541 and/or a longitudinal component 542, and the moving mechanism is used for driving the pressing plate 53 to move along a direction parallel and/or perpendicular to the supporting surface. This scheme is convenient for adjust the position of pressure strip 53 in order to adapt to the processing to the cloth of different specification styles to improve equipment's practicality. The traverse assembly 541 and the traverse assembly 542 may be configured as electric or pneumatic cylinders or linear motors. The traversing assembly 541 and the longitudinally moving assembly 542 are vertically and fixedly connected to each other, so that the position of the traversing assembly can be adjusted in one plane, and then the moving mechanism is connected between the bearing surface and the pressing plate 53, so that the relative position between the bearing surface and the pressing plate 53 can be adjusted. And further can realize the processing of towels with different specifications.

As shown in fig. 16, the folding device comprises a conveying assembly, a plurality of groups of folding mechanisms are arranged at intervals along the conveying direction of the conveying assembly, and the conveying surface of the conveying assembly is a bearing surface. The folding mechanisms arranged on the conveying belt at intervals can fold the towels along the same direction.

As shown in fig. 16 and 17, the conveyor assembly is a conveyor belt assembly 51, a plurality of sets of sub-conveyor belts 561 in the conveyor belt assembly 51 are arranged at intervals to form at least one set of detection gaps 55, a sensor 551 is arranged in the detection gaps 55, the sensor 551 is used for detecting the position of the towel, the sensor 551 is usually arranged in an inner cavity of the sub-conveyor belts 561, then the sensor 551 can detect the towel through the detection gaps 55, firstly, when the sensor 551 is arranged, the distance from the detection point of the sensor 551 to the starting end of the pressing plate 53 is determined, and then, when the sensor 551 detects the towel, the conveyor belt stops after determining how much time at the current speed for running. If the length of the towel is 60cm, and the distance from the detection point of the sensor 551 to the starting end of the pressing plate 53 is 30cm, when the conveyor belt rotates at 10cm/s, that is, after the sensor 551 detects the towel and runs for 3s, the conveyor belt can stop rotating, at this time, all the towels just enter the clamping space, then the control system controls the folding mechanism to perform the folding operation, when the pressing plate 53 is arranged, it is required to ensure that the detection gap 55 is located between the pressing plate 53 and the air supply device 52 performing the folding operation, and a certain distance space is provided between one side of the pressing plate 53 for forming the crease and the detection gap 55. Therefore, when the towel is turned over, the sensor 551 in the detection gap 55 cannot detect the towel, and therefore, a signal can be sent to the control system, and the control system controls the conveyor belt to continue to rotate so as to convey the towel to the next turning-over station for subsequent turning over.

As shown in fig. 18, the conveying assembly is provided with a sliding mechanism, the sliding mechanism is usually arranged at a station for secondary or tertiary or other subsequent folding, and since the distance between the towel and the air supply device 52 at the edge of the conveying belt is relatively large after the previous folding, the towel cannot be folded again by the air flow force, so that the folding force of the towel by the folding air flow is increased by adjusting the distance between the air supply device 52 and the folded object by the sliding mechanism. The sliding mechanism in this embodiment is a plurality of sets of sliding plates 543 which are vertically fixed on the frame of the conveyor belt and then the air supply device 52 is fixed in its slide way by screws.

As shown in fig. 18, a towel folding apparatus further includes a transverse folding device for folding the towel in a direction perpendicular to the previous direction, the apparatus includes two sets of folding belts 56 disposed at intervals and a set of folding plates 58, and in this embodiment, one set of folding belts 56 can be supported by a conveyor belt disposed at the front end. And a set of doubling belts 56 is arranged behind the conveyor belt. When the folded object is folded in half, the folding plate 58 is inserted into the space between the two sets of folding conveyor belts 56, the folding conveyor belts 56 are fixedly provided with a pushing assembly, specifically a gantry frame 581 fixed on the frame of the folding conveyor belts 56, and a pushing cylinder slidably mounted on the frame, the folding plate 58 is fixed on the movable end of the pushing cylinder, and the folding plate 58 is driven by the pushing cylinder to be inserted into or pulled out of the space between the two sets of folding conveyor belts 56. An outlet conveyor belt 57 is arranged at the lower part of the two groups of double-folding conveyor belts 56, and the outlet conveyor belt 57 is used for receiving and conveying the towels which are folded by the double-folding conveyor belts 56, so that the outlet conveyor belt 57 needs to pass through a gap.

As shown in fig. 18, a plurality of sub-belts 561 are disposed at intervals in the folding conveyor belt 56 on the side of the discharge port, a detection gap 55 is formed between each two adjacent sub-belts 561, a sensor 551 is disposed in the detection gap 55 for detecting the position of the towel on the folding conveyor belt 56, the operation principle of the detection gap is consistent with the principle that the sensor 551 detects whether the towel completely enters the clamping space, and the position of the fold can be controlled by the control of the sensor 551.

As shown in fig. 18, a material guide plate 59 is provided between the end of the folding conveyor 56 on the side close to the discharge port and the discharge conveyor 57, and the edge end of the material guide plate 59 on the side close to the folding conveyor 56 is tangent to the end of the folding conveyor 56. The material guiding plate 59 is fixed at the joint of the two groups of conveyor belts, and a slope surface with a certain angle can be formed between the two groups of conveyor belts through the material guiding plate 59, so that the towel can be smoothly transited and conveyed from the previous conveyor belt to the next conveyor belt.

As shown in fig. 13, the receiving and packaging system of the towel processing system is composed of the stacking unit 1, the transferring unit 2 and the packaging unit 3, and has the following specific structure:

a stacking unit 1, please refer to fig. 2 to 5 at the same time;

as shown in fig. 2, the stacking unit 1 includes a stacking mechanism 12, the stacking mechanism 12 includes a lifting unit and a stacking tray, the stacking tray is fixedly disposed on the lifting unit, and the lifting unit is configured to drive the stacking tray to move a suitable distance so as to keep a certain distance between the material stacked on the stacking tray and a plane where the material is placed. This it realizes to adapt to the removal accessible lifting unit of distance and move appointed distance each time, perhaps arrange the sensor and with lifting unit between go on through closed-loop type feedback system and let the realization of distance, the sensor is arranged on rail brackets for survey pile height of pile towel, when the sensor detects there is the towel, lifting unit drives pile tray and moves down, stops when the sensor can't detect the towel, can guarantee to be located the towel of top and the blanking position of towel keeps same distance always from this.

As shown in fig. 3 and 4, the lifting assembly includes a driving motor, a synchronous belt 124 and a plurality of sets of lifting belt assemblies 123, the moving direction of the belts of the plurality of sets of lifting belt assemblies 123 is the same as the direction of the sliding path, the synchronous belt 124 is connected between the plurality of sets of lifting belt assemblies 123 to drive the plurality of sets of lifting belt assemblies 123 to move at the same speed, and the driving motor is used for driving a set of lifting belt assemblies 123 to rotate. When the driving motor drives one of the lifting belt assemblies 123 to rotate, all the lifting belt assemblies 123 are driven to rotate in the same speed direction by the connection of the synchronous belt 124, and the stacking tray is fixed on the conveying belt connected to the lifting belt assemblies 123 and moves along with the lifting of the conveying belt. Since the timing belt 124 is provided to make the running speeds of the sets of lifting belts uniform, it is also ensured that the stacking trays are located at the same horizontal position.

As shown in fig. 4, the lifting assembly further includes a tensioning assembly, the tensioning assembly includes a supporting frame 126 and a tensioning roller 125, the tensioning roller 125 is rotatably disposed on the supporting frame 126, the supporting frame 126 is slidably disposed on the main frame 13, and a circumferential surface of the tensioning roller 125 abuts against the timing belt 124. The position of the tension roller 125 can be adjusted by slidably adjusting the position of the support bracket 126, and the conveyor belt can be tensioned under the restriction of the tension roller 125, thereby ensuring that the belt does not slip.

As shown in fig. 2, the stacking tray includes a supporting plate 121 and a plurality of sets of supporting rods 122 fixed on the supporting plate 121 in an array, and a lifting plane is formed at the top end of the plurality of sets of supporting rods 122. Through the setting of this structural style's pile tray, can make the tong that the centre gripping becomes a pile of neatly towel penetrate into the lower part of a pile of neatly towel by the space of multiunit die-pin 122, two sets of tongs are close to from top to bottom when carrying out the centre gripping to the towel and can form the centre gripping space, and then press from both sides the towel, this centre gripping mode can guarantee to be located the towel of towel pile lower part and can not appear the fold and buckle in order to guarantee that it has better roughness, and then the aesthetic property after being convenient for put into the bag and encapsulate when guaranteeing the later stage towel bagging-off is better.

As shown in fig. 2 and 3, the stacking tray is slidably disposed on four sets of rail brackets, the set of rail brackets enclose a rectangular space, each set of rail bracket is provided with a sliding path formed by sliding rails, and the sliding path is the same as the extending and retracting direction of the lifting assembly. The top end of the guide rail bracket is fixed with a beam 113, the beam 113 is fixedly provided with a plurality of groups of correcting frames, and the correcting channels 144 are surrounded by the plurality of groups of correcting frames. The correction path 144 is located right below the blanking position on the lower supporting plate 111, and is used for correcting the position of the towel falling from the blanking position, when the falling towel deviates from the preset falling track, the falling towel will touch the correction sheet, and the position of the towel will be adjusted back to the acceptable error range under the guidance limit of the correction sheet.

As shown in fig. 4, the correcting rack includes a plurality of correcting sheets and a synchronizing bracket 143, and the plurality of correcting sheets are fixedly connected to the synchronizing bracket 143 for ensuring that the correcting positions of the plurality of correcting sheets are on the same plane. The correcting sheet comprises a holding part 141 and a guiding part 142 fixed on the holding part 141, a correcting channel 144 surrounded by a plurality of groups of guiding parts 142 is of a closing structure with a large top and a small bottom, and is similar to an inverted trapezoid structure, and the correcting channel 144 surrounded by the guiding parts 142 is gradually contracted and connected to the correcting channel 144 of the rectangular space surrounded by the groups of holding parts 141. The correction space defined by the guide portion 142 is used to guide the deviated towels to be collected into the correction space at the lower portion.

As shown in fig. 2, the stacking machine further comprises a clamping and releasing mechanism 11 fixedly arranged above the main frame 13, wherein the clamping and releasing mechanism 11 is located right above the lifting direction of the stacking tray, and the clamping and releasing mechanism 11 is used for placing materials to a blanking position on the lower supporting plate 111.

As shown in fig. 5, the clamping and releasing mechanism 11 includes an upper clamping frame, a lower supporting plate 111, and an opening and closing driving mechanism, the upper clamping frame is fixed above the lower supporting plate 111 for moving the material to a predetermined blanking position on the lower supporting plate 111, and the opening and closing driving mechanism is fixedly connected to the lower supporting plate 111 for driving the two sets of lower supporting plates 111 to approach or move away from each other. Go up to compress tightly the frame and include the sideslip driving piece, sideslip slide rail 114 and compress tightly hand 112, compress tightly hand 112 fixed connection on a set of crossbeam 113, crossbeam 113 slides and sets up on sideslip slide rail 114, the sideslip driving piece includes driving motor and two sets of removal belt components, driving motor drives two sets of removal belt components synchronous rotations simultaneously, then because crossbeam 113 connects on the belt, it is slided in the top of bottom plate 111 that from this compresses tightly hand 112 and is driven, and then drags the pressure with the towel and place the blanking position department of bottom plate 111. When the towel reaches the preset blanking position, the opening and closing driving mechanism drives the two groups of lower supporting plates 111 to be away from each other, and then the towel falls.

The main frame body 13 on one side of the upper pressing frame is provided with a sensor for monitoring whether new towels to be piled reach a to-be-clamped area, if so, the clamping and releasing mechanism 11 is driven to work, and if not, the towels are always in a monitoring state.

The transfer unit 2, please refer to fig. 13 and fig. 6 at the same time;

as shown in fig. 6, the transferring unit 2 includes a gripping mechanism and a transferring mechanism, the transferring mechanism is used for driving the gripping mechanism to move among a plurality of groups of target positions, and in this embodiment, the transferring mechanism is mainly used for integrally holding out and transferring the towels stacked in the stacking unit 1 into the packaging bag. The clamping mechanism comprises a clamping plate 23 which is formed by a plurality of groups of clamping claws 21 arranged at intervals to form a clamping plane, and the plurality of groups of clamping claws 21 are slidably arranged in a clamping channel formed by a plurality of groups of support rods 122. In the present embodiment, the lower group of the two groups of clamping plates 23 of the clamping mechanism is the clamping plate 23 formed by the plurality of groups of clamping claws 21 at intervals, and the upper group of the clamping plate 23 is the clamping plate 23 formed by a plane plate, so that the fabric can be pressed and smoothed during clamping.

As shown in fig. 6, the transferring mechanism includes a one-way displacement mechanism 22 and a rotating mechanism, the one-way displacement mechanism 22 is fixedly disposed on the rotating mechanism, the rotating mechanism is configured to drive the one-way displacement mechanism 22 to rotate by a specified angle, the gripping mechanism is fixedly disposed on the one-way displacement mechanism 22, and the one-way displacement mechanism 22 is configured to drive the gripping mechanism to translate along the sliding direction. The unidirectional displacement mechanism 22 includes a plurality of sets of unidirectional slide rails and chain transmission components, the driving motor drives the chain transmission components to rotate, and the gripper mechanism belt connected with the chain drives the unidirectional slide rails to move.

As shown in fig. 6, the rotating mechanism includes an adjusting toothed disc 25, an adjusting rack 26 and a driving member, the driving member drives the adjusting rack 26 to reciprocate in a linear direction, and the adjusting toothed disc 25 is engaged with the adjusting rack 26. The driving member is generally configured as an air cylinder or an electric cylinder, etc., and the adjusting fluted disc 25 is driven by the driving member to perform a circular rotation, so that the one-way displacement mechanism 22 fixed thereon follows a rotation of a certain angle.

The clamping mechanism comprises a clamping driving mechanism 24, the clamping driving mechanism 24 comprises an operation slide rail and a driving unit, the clamping plates 23 are arranged on the operation slide rail in a sliding mode, and the driving unit is used for driving the clamping plates 23 to move along the operation slide rail so as to change the distance between the two groups of clamping plates 23. The driving unit is provided in this embodiment as two sets of parallel arranged conveyor belt assemblies, and the movement of the clamping plates 23 fixedly connected to the respective conveyor belts is adjusted by adjusting the movement of the two sets of conveyor belt assemblies to realize the clamping work.

The package unit 3, please refer to fig. 7 to 12 at the same time;

as shown in fig. 7, the packaging device comprises a packaging frame 31, a feeding frame 311, a feeding assembly 32, a conveying assembly 33, a bag opening mechanism 34 and a packaging assembly 38, wherein the feeding frame 311 is arranged on one side of the packaging frame 31, the conveying assembly 33 is arranged in the packaging frame 31, the feeding assembly 32 is arranged on the feeding frame 311, a packaging bag is placed in the feeding frame 311, the feeding assembly 32 is used for conveying the packaging bag to the conveying assembly 33, the bag opening mechanism 34 and the packaging assembly 38 are both arranged on the packaging frame 31 and are sequentially arranged along the conveying direction of the conveying assembly 33, the bag opening mechanism 34 is used for opening the packaging bag on the conveying assembly 33 so as to enable the packaging bag to be filled with fabric, and the packaging assembly 38 is used for heat-sealing the packaging bag filled with fabric.

Referring to fig. 8 and 9, the feeding assembly 32 includes a material storage rack 321, a material loading rack 322, a feeding motor 323, and a transmission component, the material storage rack 321 is disposed in the material loading rack 311 and connected to the material loading rack 311 by screws, the package bags are stacked on the material storage rack 321, the material loading rack 311 is further provided with a feeding carriage, the feeding carriage is disposed perpendicular to the conveying direction of the conveying assembly 33, the feeding motor 323 is disposed on the feeding carriage, the material loading rack 322 is connected to the feeding carriage by a sliding cylinder 324, the sliding cylinder 324 is connected to the feeding carriage in a sliding manner, the feeding motor 323 is connected to the sliding cylinder 324 by a transmission component, the transmission component is selected from an electric drag chain, the material loading rack 322 is provided with a plurality of feeding suction cups 325 for sucking the package bags, so that the sliding cylinder 324 is controlled to slide along the feeding carriage under the action of the feeding motor 323, the feeding rack 322 is controlled to move perpendicular to the feeding direction under the action of the sliding cylinder 324, and the sealed bags on the storage rack 321 are sucked under the action of the feeding suction cups 325, so that the sealed bags on the storage rack 321 are fed onto the conveying assembly 33.

Referring to fig. 10 and 12, the conveying assembly 33 includes a driving source 331, a spacer 332, a smooth conveyor, a suction conveyor 333, and conveying rollers disposed at two ends of the packaging frame 31, the driving source 331 is disposed on the packaging frame 31 and is used to drive the conveying rollers at one end of the packaging frame 31 to rotate, the smooth conveyor and the suction conveyor 333 are both disposed around the conveying rollers, the spacer 332 is disposed on the conveying rollers coaxially, the spacer 332 is disposed between the smooth conveyor and the suction conveyor 333, a plurality of suction bag suction ports 334 are disposed on the suction conveyor 333 along the conveying direction of the conveyor, when a packaging bag is fed onto the conveying assembly 33, the mouth of the packaging bag is located on the suction conveyor 333, the remaining portion of the packaging bag is located on the smooth conveyor, so that the packaging bag is driven to move by the driving source 331, and the suction bag suction port 334 is disposed on the suction conveyor 333, negative pressure is formed when the air passes through the suction bag suction port 334, so that the bag mouth of the packaging bag is sucked on the suction conveyer belt 333.

Referring to fig. 8, 9, 10 and 11, the bag opening mechanism 34 includes a bag suction assembly 35 and a bag opening assembly 36, the packaging frame 31 is further provided with a guide frame, the guide frame is disposed along a feeding direction of the conveying assembly 33, the bag opening assembly 36 is slidably disposed on the guide frame, the guide frame is further provided with a position control assembly 37, the position control assembly 37 is used for controlling the sliding movement of the bag opening assembly 36 along the guide frame, the bag suction assembly 35 is disposed on the packaging frame 31, the bag suction assembly 35 is used for sucking the sealed bag, the bag opening assembly 36 is used for opening a bag opening of the sealed bag, the bag suction assembly 35 includes a bag suction motor, a transmission belt, a position control member 353 and a support member 354, the bag suction motor and the transmission belt are disposed on the packaging frame 31 and above the conveying assembly 33, the transmission belt is provided with a movable seat 352, one end of the position control member 353 is connected with the movable seat 352, the other end of the position control member is connected with the support member 354, the bag suction motor is used for controlling the transmission belt to drive the movable seat 352 to move along a direction perpendicular to the conveying assembly 33, thereby controlling the control unit 353 to move along the direction vertical to the conveying assembly 33, and the support unit 354 is provided with a plurality of bag opening suction cups 351, so that the bag opening suction cups 351 can suck the packaging bag on the conveying assembly 33 and can lift the packaging bag to separate from the conveying assembly 33.

Referring to fig. 11 and 12, the position control assembly 37 includes a position control motor 371 disposed on the guiding frame, a position control belt 372 and a plurality of position control seats 373, the position control motor 371 is used for controlling transmission of the position control belt 372, in this embodiment, the number of the position control seats 373 is two, the two position control seats 373 are disposed at two ends of the guiding frame and slidably connected to the guiding frame, the position control seat 373 at one end of the guiding frame is connected to one side of the position control belt 372, the position control seat 373 at the other end of the guiding frame is connected to the other side of the position control belt 372, so that when the position control motor 371 controls the position control belt 372 to rotate, the position control seats 373 at two ends of the guiding frame move in opposite directions or opposite directions along the guiding frame, thereby driving the bag opening assembly 36 to move.

Referring to fig. 7 and 12, the bag opening assembly 36 includes a shift cylinder 361, a shift seat 362, a bag opening motor 363, a guide seat 364, and a bag opening member 365, the shift cylinder 361 is disposed on a position control seat 373, a piston rod end of the shift cylinder 361 is connected to the shift seat 362, the guide seat 364 is slidably connected to the shift seat 362, the bag opening motor 363 is disposed on the shift seat 362, the bag opening motor 363 is coaxially connected to a lead screw, the lead screw is disposed on the guide seat 364 and threadedly connected to the guide seat 364, the bag opening member 365 is connected to a side of the guide seat 364 away from the shift seat 362, so that when the package bag needs to be opened, the bag opening members 365 disposed in the bag opening assembly 36 at both ends of the guide frame are disposed in the package bag, and under the action of the bag opening motor 363 driving the lead screw to rotate, the bag opening members 365 at both ends of the guide frame move up one another one of the bag opening member is moved down, so as to open the package bag, and the bag opening member 365 moving down drives the package bag to contact with the suction conveyor belt 333, the air blower performs air draft at the moment, so that the packaging bag is adsorbed on the material sucking conveying belt 333, the packaging bag can be unfolded under the action of the bag opening assembly 36, and the fabric is conveniently filled.

Referring to fig. 9, the packaging assembly 38 includes a bag pressing cylinder 381, a bag pressing member 382, a heat sealing cylinder 383, a heat sealing member 384, a bag ejecting cylinder 385 and a bag folding member 386, wherein the bag pressing cylinder 381 and the heat sealing cylinder 383 are both disposed on the packaging frame 31 and above the conveying assembly 33, the end of the piston rod of the bag pressing cylinder 381 is connected to the bag pressing member 382, so that the bag pressing cylinder 381 controls the bag pressing member 382 to press the packaging bag packaged with the face fabric to eject air in the packaging bag, the end of the piston rod of the heat sealing cylinder 383 is connected to the heat sealing member 384, so that the heat sealing cylinder 383 controls the heat sealing member 384 to heat seal the packaging bag, the ejecting cylinder 385 is disposed on the packaging frame 31 and at the bottom of the conveying assembly 33, the end of the piston rod of the ejecting cylinder 385 is connected to the bag folding member 386, the bag folding member 386 is disposed between the smoothing conveyor belt and the suction conveyor belt 333, so that when the ejecting cylinder 385 ejects the bag folding member 386 to fold the bag folding member 386, thereby pushing the heat sealer 384 at the heat-seal cylinder 383 to more fully encapsulate the pouch. A vacuum generating device is further provided at the packing assembly 38, and when the heat sealing work is performed to half, the vacuum generating device is turned on to draw the inside of the packing bag to a negative pressure state, thereby reducing the volume after packing.

Referring to fig. 8 to 11, a smoothing frame 312 is further disposed on one side of the packaging frame 31, a smoothing assembly 39 is disposed on the smoothing frame 312, the smoothing assembly 39 includes a smoothing motor 391, a smoothing belt 392, a plurality of smoothing seats 393 and smoothing members 394, the smoothing motor 391 and the smoothing belt 392 are both disposed on the smoothing frame 312, the smoothing motor 391 is configured to drive the smoothing belt 392 to transmit along the transmission direction of the conveying assembly 33, in this embodiment, two smoothing seats 393 are disposed, two smoothing seats 393 are respectively disposed at two ends of the smoothing frame 312, the smoothing seat 393 at one end of the smoothing frame 312 is connected with one side of the smoothing belt 392 and connected with the smoothing frame 312 in a sliding manner, the smoothing seat 393 at the other end of the smoothing frame 312 is connected with the other side of the smoothing belt 392 and connected with the smoothing frame 312 in a sliding manner, so that the smoothing seats 393 at the two ends of the smoothing frame 312 are controlled to move toward or away from each other when the smoothing belt 392 transmits, and one side of the smoothing seat 312 is connected with the bag opening 393 for bagging, smooth and still be provided with on the seat 393 and be used for controlling the flexible telescopic cylinder of smoothing piece 394, smooth and offer the spout that supplies telescopic cylinder to slide on the frame 312, telescopic cylinder's piston rod tip and the one end coaxial coupling of smoothing piece 394, so that can drive under telescopic cylinder's effect and smooth the piece 394 and remove, smooth position of piece 394 is located the position after the encapsulation bag sack is folding, so that drive when smoothing motor 391 drives and smooth belt 392 control and smooth seat 393 and remove along smoothing frame 312, drive and smooth piece 394 and smooth encapsulation bag sack department and smooth, make sack department be difficult for appearing the fold, and smooth the back, drive through telescopic cylinder and smooth piece 394 and encapsulation bag separation, thereby be difficult for causing the hindrance to the heat-seal of heat-seal 384.

The working principle is as follows:

as shown in fig. 1, firstly, towels to be processed are respectively placed on two sets of blank placing platforms, after the placement is completed, the transfer mechanism drives the clamping mechanism to continuously clamp the towels placed on one side of the blank placing platform to a specified target area, then the towel is sent to the folding unit 5 by the conveyor belts to be turned over, when the towels only need to be folded in a single direction, all the conveyor belts are controlled to rotate in the same direction, the folded plates 58 can not fall, therefore, the towels are sequentially turned over by the plurality of sets of folding mechanisms under the conveying of the conveyor belts, finally formed and transferred to the discharge conveyor belts 57 by the folded conveyor belts 56, if the towels need to be folded in multiple directions, the towels are also required to be conveyed between the two sets of folded conveyor belts 56, the folded plates 58 insert the towels into the space between the two sets of folded conveyor belts 56, and simultaneously the two sets of folded conveyor belts 56 rotate oppositely to roll the rest towels into a folded state, meanwhile, the towel folded in half is conveyed to a discharge hole by a discharge conveying belt 57 positioned at the lower part.

Then, the towel is pressed on the lower support plate 111 by the pressing hand 112 through one end of the towel, and then the towel is dragged and pressed to the blanking position of the lower support plate 111 under the driving of the traverse driving element. When the towel reaches the preset blanking position, the opening and closing driving mechanism drives the two groups of lower supporting plates 111 to be away from each other, and then the towel falls. The towels pass through the correcting channel 144 and then fall to the top of the support rod 122 of the stacking tray, then the lifting assembly drives the stacking tray to move downwards for a certain distance, and then the stacking process is repeated for the next towel until the next towel is stacked to the specified height or the specified quantity of towels and then the stacking operation is stopped. Then the hand clamping mechanism in the transferring unit 2 clamps up the piled towels, then the one-way displacement mechanism 22 drives the hand clamping mechanism to return, then the rotating mechanism drives the hand clamping mechanism to rotate 90 degrees, at the moment, the towels clamped by the hand clamping mechanism just aim at the opened packaging bags, then the towels are sent into the packaging bags under the driving of the one-way displacement mechanism 22, then the hand clamping mechanism is opened and is pulled out from the packaging bags, and the transfer of the towels is completed.

The operation process of the packaging bag is that the sliding cylinder 324 controls the feeding tray frame 322 to move downwards, the packaging bag on the storage rack 321 is adsorbed under the action of the feeding sucker 325, the feeding motor 323 drives the sliding cylinder 324 to move along the feeding carriage through the transmission piece, the adsorbed packaging bag is fed onto the conveying assembly 33, the conveying assembly 33 drives the packaging bag to be conveyed to the lower part of the bag opening sucker 351 under the action of the driving source 331, at the moment, the bag sucking motor is started to drive the moving seat 352 to move downwards through the driving belt, the packaging bag is adsorbed under the action of the bag opening sucker 351, then the packaging bag is driven to move upwards to the preset position, the position control motor 371 is started to drive the position control seats 373 at the two ends of the guide frame to move towards each other through the position control belt 372, meanwhile, the shifting cylinder 361 controls the position shifting seat 362 to move towards one side far away from the guide frame, the bag opening piece 365 is driven to move to the front side of the opening of the packaging bag, when the position control seats 373 slide to the middle part of the packaging bag, the moving cylinder drives the bag opening member 365 to move towards the packaging bag, the bag opening member 365 is moved into the packaging bag, at the moment, the bag suction motor is started to control the bag opening sucker 351 to move downwards so that the packaging bag is in contact with the material suction conveying belt 333 and the smooth conveying belt, meanwhile, the blower performs air suction, the lower side of the packaging bag is adsorbed to the material suction conveying belt, and the bag opening motor 363 drives the guide seat 364 to slide along the moving seat 352 after adsorption, so that the bag opening of the packaging bag by the bag opening member 365 is controlled;

after bagging-off, conveying component 33 carries the encapsulation bag of the filled-in towel to remove to package assembly 38 department, drive through pressing bag cylinder 381 and press bag piece 382 to push down the air in the discharge encapsulation bag, ejecting cylinder 385 promotes a sack that a bag piece 386 drove the encapsulation bag and folds after that, flexible cylinder stretches out and smoothes piece 394 and presses and hold on the encapsulation bag after folding, and when smoothing motor 391 control smoothes belt 392 and drive the slip of smoothing seat 393, control smoothes piece 394 and smoothes the encapsulation bag, flexible cylinder drives after smoothing and resets, heat-seal cylinder 383 controls heat-seal piece 384 to push down this moment, thereby carry out the heat-seal to the encapsulation bag.

The above description is intended to describe in detail the preferred embodiments of the present invention, but the embodiments are not intended to limit the scope of the claims of the present invention, and all equivalent changes and modifications made within the technical spirit of the present invention should fall within the scope of the claims of the present invention.

Claims

1. The automatic towel folding, stacking and packaging method is characterized by comprising a folding process, wherein the folding process comprises a primary folding process, and the primary folding process comprises the following steps:

clamping the material to be folded along a preset folding track;

the contact point of the turnover airflow and the lower clamping surface is positioned in front of the edge of the material to be folded.

2. The automated towel stack wrapping method of claim 1 wherein said air flow surface is a continuous air flow surface having a uniform air flow strength.

3. The automated towel fold stack wrapping method of claim 2 wherein said air flow surface is formed by a plurality of spaced arrays of air flow jets.

4. The automated towel folding, stacking and packaging method according to claim 1, further comprising a feeding process, a stacking process and a packaging process;

the feeding process is used for placing materials into the processing system;

the folding process is used for folding the material into a preset shape;

5. The automated towel folding stack packaging method according to claim 4, wherein the folding process comprises a secondary folding process, the secondary folding process comprising the steps of:

then inserting the materials into the space between the two groups of oppositely-folded conveyor belts (56) for the folded plate (58) along the preset crease track of the secondary folding, and then rotating the two groups of oppositely-folded conveyor belts (56);

and the materials which are turned over for the second time are sent out by a discharge conveyor belt (57).

6. An automated towel stack wrapping method according to claim 5, wherein the outfeed conveyor (57) is spaced parallel to and directly above the fold-over conveyor (56).

7. An automated towel fold stack packaging method according to claim 4, wherein said stacking process comprises a palletizing process, said palletizing process comprising the steps of:

placing the materials right above the stacking tray and standing;

the materials fall freely onto a stacking tray;

8. The automated towel folding and stacking packaging method according to claim 7, wherein the stacking tray comprises a support plate (121) and a plurality of groups of support rods (122) fixed on the support plate (121) in a vertical array, and the top ends of the plurality of groups of support rods (122) form a lifting plane.

9. An automated towel stack wrapping method according to claim 4, wherein the wrapping process creates a negative pressure within the package before the package is completely closed, and then the remaining portion of the package is wrapped.