CN116945614A - Bagging production equipment, automatic production line and automatic production method - Google Patents

Abstract

The utility model discloses production equipment of a bagging, which comprises edge sealing devices, wherein the production equipment comprises two or more edge sealing devices for synchronously sealing the sealing edges of the bagging, and an adjusting device for adjusting the width between the two sealing edges of the bagging under the condition that the distance between two adjacent welding devices is fixed. The cloth fed by the utility model adopts double-layer cloth, the whole set of encapsulation edges are subjected to edge sealing treatment synchronously by adopting two edge sealing devices, and the adjustment device is adopted to adapt to edge sealing of pillowcases or cloth with different widths under the condition that the relative distance of the edge sealing devices is unchanged.

Description

Bagging production equipment, automatic production line and automatic production method

Technical Field

The utility model relates to production equipment of a bagging, in particular to production equipment of a pillowcase, and also relates to a pillowcase automatic production line comprising the production equipment, and also relates to a pillowcase automatic production method comprising the pillowcase automatic production line.

Background

The Chinese patent with publication number of CN217349998U discloses a production system of an integrated bandage pillowcase machine, which essentially is a production line for producing pillowcases, and the production flow comprises: a. placing the single-layer cloth roll in a feeding mechanism, and continuously outputting the single-layer cloth; b. then, the single-layer cloth enters a bandage welding mechanism to weld a bandage at a bandage welding table; c. after the bandages are welded, the single-layer cloth enters a single-layer doubling mechanism, the single-layer cloth is doubled into double-layer cloth from the middle, and the bandages are all arranged on the outer sides of the double-layer cloth; d. the double-layer cloth enters a banding mechanism for transverse banding to obtain a uniform banding strip; e. then, the bandage pillowcase enters a multi-layer folding mechanism, longitudinal folding is carried out through a vertical folding part, then a folding cutter cuts at the middle position of the edge banding strip, and a bandage pillowcase is obtained, and then the bandage pillowcase is transversely folded for multiple times through a transverse folding part; f. and transporting the bandage pillowcase stacked by the conveying platform to a designated position. In the pillowcase production equipment represented by the above patent, a process of welding or edge sealing by single-layer cloth is adopted, the process is complex, and the production efficiency is low.

The Chinese patent with the main title of CN217349998U discloses a process for integrally producing a production system of a bandage pillowcase machine, which comprises the steps of folding a single-layer cloth through two folding mechanisms successively to form an opening for placing a pillow core, and then welding the opening by a welding mechanism.

In addition to the above problems, when the welding machine welds the cloth, it takes a certain time to weld, at this time, the cloth being welded on the welding table should be stationary, at this time, the feeding mechanism and the cloth conveying structure should be stopped, and the apparatus is idle or frequently stopped.

Disclosure of Invention

Aiming at the problem that the production efficiency is to be further improved, the utility model aims to provide production equipment of a bagging, especially a pillowcase, with higher production efficiency. The utility model also aims to provide an automatic pillowcase production line comprising the production equipment, and also aims to provide an automatic pillowcase production method comprising the automatic pillowcase production line.

The production equipment of the bagging comprises edge sealing devices, wherein the production equipment comprises two edge sealing devices for synchronously sealing two opposite side edges of the bagging and an adjusting device for adjusting the width between the two side edges of the bagging under the condition that the distance between the two edge sealing devices is fixed.

Further, the adjusting device comprises an adjusting cloth roller, the bagging bypasses the adjusting cloth roller, two side edges of the bagging are respectively arranged on the two edge sealing devices, and the adjusting cloth roller has different adjusting positions, so that the bagging bypassing the adjusting cloth roller has a preset width.

Further, the adjusting cloth roller is arranged between the two edge sealing devices, and a plurality of fixed positions are longitudinally arranged on the adjusting cloth roller, or the adjusting cloth roller moves longitudinally or obliquely, and the bag is enabled to have a corresponding width by moving to a preset position.

Further, the adjusting cloth roller is arranged on the upper side or the lower side of the surface of the workbench of the edge sealing device, and a plurality of fixing positions or transverse movement are arranged on the horizontal plane of the adjusting cloth roller so that the bagging has a corresponding width.

Further, the cloth feeding device comprises at least two adjusting cloth rollers, wherein the adjusting cloth rollers at least comprise one movable cloth roller, and the movable cloth roller moves away from or close to change the width of the bagging.

Further, the edge sealing device is an ultrasonic welding device, the ultrasonic welding device is fixed on a support, the support is provided with a driving device for driving the support to move up and down, the support is connected to a movable beam, and the movable beam moves along a track arranged on production equipment and is used for driving the ultrasonic welding device to move along the length direction of the bagging for welding.

Further, still include conveyor, discharging device and storage device, storage device includes the compensation cloth roller, and the compensation cloth roller is walked around to the cloth, the compensation cloth roller is used for changing the delivery path length of cloth under drive arrangement effect removal, the compensation cloth roller has when the travel speed that matches with cloth feed speed makes the cloth welding section static, and the cloth length of continuous feeding and the cloth length of discharging device ejection of compact are offset by the length that delivery path changes.

Further, the storage device comprises a first storage device and a second storage device, the first storage device and the second storage device further comprise a first fixed roller and a second fixed roller, the first fixed roller and the second fixed roller are arranged on the same side, the compensation cloth roller is arranged on the other side opposite to the first fixed roller and the second fixed roller, the cloth feeding extends to a working area of the welding device through the first storage device, then extends to the discharging device through the second storage device from the working area of the welding device, the cloth winds around the first fixed roller of the first storage device, winds around the supplementary cloth roller from the first fixed roller, winds around the second fixed roller from the supplementary cloth roller, extends to the working area of the welding device from the second fixed roller, the conveying sequence of the cloth in the second storage device is opposite to that of the first storage device, the first storage device and the second storage device are connected on the same conveying belt, and the conveying belt drives the storage device to move away from or close to the corresponding first fixed roller and second fixed roller.

The utility model also discloses a pillowcase automation line comprising the production equipment according to claim 8, and further comprising a feeding device, a flanging device, a cutting device and a folding device, wherein the cloth is double-layer cloth, the width of one layer of cloth is larger than that of the other layer of cloth, which is used for flanging, so that a pillow core inlet is formed, the cloth is fed by the feeding device, the pillow core inlet is formed after the flanging is carried out by a flanging machine, the side edges of the pillowcase are welded by the production equipment to form a plurality of continuous pillowcases, the middle part of a welding line is cut by the cutting device to form an independent pillowcase, and the pillowcase is folded by the folding device.

The utility model further discloses an automatic production method of the pillowcase, which comprises the automatic production line of the pillowcase and comprises the following steps of:

(1) Feeding double-layer cloth, wherein the width of one layer of cloth is larger than that of the other layer of cloth, and the width of the cloth is the length of the cloth in the direction parallel to the welding seam;

(2) The cloth is fed to a flanging device, and the flanging device folds the longer cloth above the shorter cloth to form an inlet of the pillow core;

(3) Controlling the adjusting device to a preset position so that the width of the pillowcase between the edge sealing devices accords with a preset length;

(4) Conveying the folded cloth to working areas of two edge sealing devices through a first storage device, pressing down by a flat pressing device to enable the cloth of the edge sealing section to be static, and moving down by the edge sealing device and synchronously sealing two sides of the pillowcase; the feeding device and the discharging device continuously run while the edge sealing device seals edges, the conveying belt moves to enable the compensation cloth roller of the first storage device to move in the direction away from the first fixed roller of the first storage device, so that fed cloth is counteracted by an extended conveying path, the compensation cloth roller of the second storage device moves from a position away from the first fixed roller of the second storage device to a position of the first fixed roller, and the conveying path of the second storage device shortens to counteract the length of outwards discharged material of the discharging device;

(5) After the edge sealing device is used for edge sealing, the compensation cloth rolls of the first storage device and the second storage device are reset;

(6) The tearing and shearing device cuts along the central line of the edge sealing to form a pillowcase, and the pillowcase is folded after passing through a folding machine.

The beneficial effects of the utility model are as follows:

(1) The cloth fed by the utility model adopts double-layer cloth, the whole set of encapsulation edges are subjected to edge sealing treatment synchronously by adopting two edge sealing devices, and the adjustment device is adopted to adapt to edge sealing of pillowcases or cloth with different widths under the condition that the relative distance of the edge sealing devices is unchanged.

(2) The utility model also provides a storage device, the distance between the compensation cloth roller and the first fixed cloth roller and the distance between the compensation cloth roller and the second fixed cloth roller are changed by utilizing the far-away movement or the opposite movement of the compensation cloth roller relative to the first fixed cloth roller and the second fixed cloth roller, and the rest parts of the feeding and discharging materials are compensated under the condition that the packaging section is static by changing the distance, so that the function of continuously running the feeding and discharging materials of the packaging section is realized.

Drawings

FIG. 1 is a schematic diagram of a specific embodiment of a production facility embodying the present utility model;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a schematic view of the ultrasonic welding apparatus of FIG. 1 with the rear interior of the mounting plate hidden;

FIG. 4 is a schematic view of a cloth transport path during welding;

FIG. 5 is a schematic view of the cloth transport path after welding is completed;

FIG. 6 is a schematic view of embodiment 1 of the adjustment device;

FIG. 7 is a schematic view of embodiment 2 of the adjusting device;

fig. 8 is a schematic diagram of an automated pillowcase production line;

fig. 9 is a schematic view of a double layer cloth.

Reference numerals illustrate: 1. a base; 2. a nip roller; 3. a gear; 4. a motor; 5. a mounting plate; 6. a track; 7. a moving beam; 8. a bracket; 9. an ultrasonic welding device; 10. distributing materials; 11. a pillowcase; 111. a side edge; 12. adjusting the cloth roller; 121. moving the cloth roll; 122. fixing the cloth roller; 13. an ultrasonic welding head; 14. a discharging device; 15. compensating a cloth roller; 16. a first storage device; 16', a blanking and storing device; 17. a first fixed roller; 18. a second fixed roller; 19. a rack conveyor belt; 20. a movable seat; 21. a flattening device; 22. a feeding device; 23. a hemming device; 24. a cutting device; 25. folding device.

Detailed Description

In order to further describe the technical means and effects adopted by the present utility model for achieving the intended purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present utility model with reference to the accompanying drawings and preferred embodiments.

Referring to fig. 1 to 7, the production equipment of the bagging comprises edge sealing devices, wherein the production equipment comprises two edge sealing devices for synchronously sealing two opposite side edges 111 of the bagging, and an adjusting device for adjusting the width of the bagging, namely the distance between the two side edges 111 of the bagging under the condition that the distance between the two edge sealing devices is fixed. In this embodiment, the production of the pillow case 11 is described in detail, and the edge sealing or welding of other bags is similar to the processing of the pillow case. Referring to fig. 1, the production equipment comprises a base 1, wherein conveying devices are arranged at the front end and the rear end of the table top of the base 1, each conveying device comprises an upper clamping roller 2 and a lower clamping roller 2, a cloth 10 is clamped between the two clamping rollers 2, a gap between the clamping rollers 2 is adjustable, two ends of the clamping rollers 2 are fixed with gears 3, and the gears 3 of the clamping rollers 2 at the same side are mutually matched and rotate under the driving of a motor 4 so that the cloth 10 is continuously fed or discharged. Referring to fig. 2 and 3, fig. 2 is an internal structure shown after hiding one mounting plate 5, two mounting plates 5 perpendicular to the table top between the front and rear two conveying devices are provided on the table top, two parallel rails 6 are provided on the surface perpendicular to the mounting plates 5, a moving beam 7 is erected on the two rails 6 and can move along the rails 6, the moving beam 7 is fixed with two brackets 8 through bolts at a predetermined distance, a driving device is provided on the brackets 8 to drive the brackets 8 to do lifting movement, each bracket 8 is connected with a sealing device, in this embodiment, the sealing device is an ultrasonic welding device 9, including a welding wheel and an ultrasonic device 13, the welding wheel and the ultrasonic device are aligned and synchronously moved to do rolling sealing, the specific structure of the ultrasonic welding device can refer to the chinese patent application number CN202220405116.3, which is a multifunctional bedding processing device, and the ultrasonic welding device 9 can do lifting movement under program control in the actual use process, so that the ultrasonic welding device 9 is in contact with the cloth 10 to perform welding or ascend after the welding is finished. In the welding process, the ultrasonic welding device 9 is driven by the moving beam 7 to move along the length direction of the pillowcase 11 to synchronously weld the two side edges 111 of the pillowcase 11. In this embodiment, a double-layer cloth 10 is fed, wherein the double-layer cloth 10 comprises an upper layer and a lower layer, one layer has a shorter width, and the cloth 10 is cut along the middle of the welded side 111 to form a pillow case 11. Referring to fig. 6 and 7, the adjusting device includes an adjusting cloth roll 12, a pillow cover 11 bypasses the adjusting cloth roll 12, and the adjusting cloth roll 12 has different adjusting positions such that the pillow cover bypassing the adjusting cloth roll 12 has a predetermined width. In embodiment 1, referring to fig. 6, the adjusting cloth roller 12 is disposed at the middle position between the two edge sealing devices, the adjusting cloth roller 12 is longitudinally provided with a plurality of fixed positions, when producing the pillowcase 11 with different sizes and widths, the adjusting cloth roller 12 is mounted at different positions, so that the ultrasonic welding device 9 adapts to synchronous welding of two sides 111 of the pillowcase 11 with different sizes and widths under the condition of unchanged distance, and the adjusting cloth roller 12 longitudinally or obliquely moves to the preset position, so that the bagging has corresponding width. Referring to fig. 2, the adjusting cloth roller 12 can also be driven by the motor 4 to move vertically along the mounting plate 5, and the moving mode can adopt a mode that two ends of the adjusting cloth roller 12 are connected to racks, and the racks are driven by the gear 3 to move, so that the adjustment is not limited to a plurality of fixed points.

Embodiment 2 of the present utility model is basically the same as embodiment 1, except that the positions and the number of the adjustment cloth rolls 12 are different, and referring to fig. 7, a plurality of fixing positions are provided on the horizontal plane of the upper side or the lower side of the working area of the ultrasonic device 13, and since the adjustment cloth rolls 12 and the ultrasonic device 13 form three sides of a triangle, when the pitches of the ultrasonic devices 13 are the same, the positions of the adjustment cloth rolls 12 are different, and the sum of the remaining two sides is adjustable, preferably, the adjustment cloth rolls 12 can be horizontally moved laterally so that the bags have the corresponding widths. Preferably, two adjusting cloth rollers 12 are included, wherein one moving cloth roller 121 and one fixed cloth roller 122 are included, or two moving cloth rollers 121 horizontally move, and the moving cloth roller 121 moves far away from or close to the fixed cloth roller 122 or the other moving cloth roller for changing the width of the pillowcase, and a plurality of adjusting cloth rollers 12 can be arranged.

Referring to fig. 1 to 5, the automatic feeding device further comprises a discharging device 14 and a storage device, wherein the discharging device 14 comprises the conveying device, the storage device comprises a compensation cloth roller 15, the cloth 10 bypasses the compensation cloth roller 15, the compensation cloth roller 15 moves under the action of a driving device to change the conveying path length of the cloth 10, and when the compensation cloth roller 15 has a moving speed matched with the feeding speed of the cloth 10 so that a cloth welding section is static, the length of the continuously fed cloth 10 and the length of the cloth 10 discharged by the discharging device 14 are offset by the length of the conveying path change. The specific scheme is as follows: the storage device is divided into a first storage device 16 and a second storage device 16', the first storage device 16 is arranged in the base 1 at the feeding side, the second storage device 16' is arranged in the base 1 at the discharging side, the first storage device 16 and the second storage device 16 'adopt basically the same structure and principle, the storage device further comprises a first fixed roller 17 and a second fixed roller 18, the first fixed roller 17 and the second fixed roller 18 are arranged at the same side, the compensation cloth roller 15 is arranged at the other side opposite to the first fixed roller 17 and the second fixed roller 18, the cloth 10 is fed and extends to the working area of the welding device through the first storage device 16, and then extends to the discharging device 14 from the working area of the welding device through the second storage device 16', the cloth 10 is wound around the first fixed roller 17 of the first storage device 16, wound around the compensating cloth roller 15 from the first fixed roller 17, wound around the second fixed roller 18 from the compensating cloth roller 15, and extends from the second fixed roller 18 to the working area of the welding device, the conveying sequence of the cloth 10 in the second storage device 16 'is opposite to that of the first storage device 16, specifically, the cloth 10 is wound around the second fixed roller 18 of the second storage device 16', wound around the compensating cloth roller 15, finally wound around the first fixed roller 17 and then enters the clamping roller 2 of the discharging device 14, and the compensating cloth roller 15, the first fixed roller 17 and the second fixed roller 18 are movably connected on the base 1, namely, the compensating cloth roller 15, the first fixed roller 17 and the second fixed roller 18 can rotate around their own axes. The compensation cloth rolls 15 of the first storage device 16 and the second storage device 16' are connected to the same conveying belt according to a preset interval, the conveying belt can be a rack conveying belt 19, the compensation cloth rolls 15 are fixed on a movable seat 20, the movable seat 20 is fixed on the rack conveying belt 19 through rack clamping, and the conveying belt drives the compensation cloth rolls 15 to move away from or close to the corresponding first fixed rolls 17 and second fixed rolls 18 under the driving of a motor. The working principle is as follows: referring to fig. 4, during welding, the cloth 10 on the ultrasonic device 13 is stationary, the rest of the cloth 10 can be realized by clamping the welding device, preferably, the rest of the cloth can be realized by pressing the flat pressing device 21 on the surface of the cloth 10, at this time, the compensating cloth roller 15 in the first storage device 16 is located at an initial position, that is, a position close to the first fixed cloth roller 122 and the second fixed cloth roller 122, the compensating cloth roller 15 moves rightwards under the driving of the rack conveyor belt 19, when the moving speed of the rack conveyor belt 19 is half of the speed of the fed cloth 10, the length of the fed cloth 10 can be offset by the increasing path length of the compensating cloth roller 15 moving rightwards, that is, the function of continuously feeding and the rest of the cloth 10 in the welding area is realized, and the initial position of the compensating cloth roller 15 of the blanking storage device 17 is a position of the compensating cloth roller 15 far away from the first fixed cloth roller 122 and the second fixed cloth roller 122, and the compensating cloth roller 15 moves rightwards, so that the shortened path length is the same as the length of the fed cloth 10. Fig. 5 is a schematic view showing the movement of the compensating rolls of the first and second stocker 16 and 16' after the elevation of the platen 21 and ultrasonic welding device 9, and the resetting is performed in a short time to perform the next welding operation. The cloth 10 between the first fixed roller 17 and the compensation cloth roller 15 and between the second fixed roller 18 and the compensation cloth roller 15 is parallel to the moving direction of the rack conveyor 19, and in this embodiment, is horizontal.

The utility model also discloses an automatic pillowcase production line comprising the production equipment, and referring to fig. 8, the pillowcase production line comprises a feeding device 22, a flanging device 23, a cutting device 24 and a folding device 25, wherein the feeding device 22, the flanging device 23, the cutting device 24 and the folding device 25 are all in the prior art, so that the structure of the pillowcase production line is not described in detail. Referring to fig. 9, the cloth 10 of the present utility model is different from the single-layer cloth 10 used in the existing pillowcase processing, and is formed by overlapping two layers of cloth 10, wherein the width of one layer of cloth is larger than that of the other layer of cloth, and the width of the other layer of cloth is used for forming the inlet of the pillow core after edge folding, and the two layers of independent cloth are directly overlapped together in two ways, when the two layers of cloth are adopted, an edge sealing process is needed to be added before or after edge folding, one end of the pillowcase 11 in the width direction is sealed, the two layers of cloth 10 are fed by a feeding device 22, the inlet of the pillow core is formed after edge folding by the edge folding machine, a plurality of continuous pillowcases 11 are formed by welding the side edges 111 of the pillowcase by the production equipment, the middle part of a welding line is cut by a cutting device 24, and the single pillowcase 11 is folded by a folding device.

The utility model also discloses an automatic production method of the pillowcase, which comprises the following steps of:

(1) Feeding a double-layer cloth 10, wherein the width of one layer of cloth is larger than that of the other layer of cloth, and the width of the cloth is the length of the cloth in the direction parallel to the welding seam;

(2) The cloth 10 is fed to a hemming device which folds the longer cloth layer over the shorter cloth layer for forming an inlet of the pillow core;

(3) Controlling the adjusting device to a preset position so that the width of the pillowcase 11 between the edge sealing devices accords with a preset length;

(4) The folded cloth 10 is conveyed to the working areas of two edge sealing devices through a first storage device 16, the flat pressing device 21 is pressed down to enable the edge sealing section cloth 10 to be static, and the edge sealing devices move down and synchronously seal edges of two sides 111 of the pillowcase 11; while the edge sealing device is used for edge sealing, the feeding device 22 and the discharging device 14 continuously run, the conveying belt moves to enable the compensating cloth roller 15 of the first storage device to move in the direction away from the first fixed roller 17 of the first storage device, so that the fed cloth 10 is counteracted by an extended conveying path, the compensating cloth roller 15 of the second storage device moves from a position away from the first fixed roller 17 of the second storage device to a position of the first fixed roller 17, and the conveying path of the second storage device is shortened to counteract the outward discharging length of the discharging device 14;

(5) After the edge sealing device finishes edge sealing, the flat pressing device 21 and the welding device move upwards, the compensation cloth roller 15 of the first material storage device and the second material storage device are reset, and the cloth 10 moves forwards;

(6) The cutting device cuts along the central line of the edge sealing to form a pillowcase 11, and the pillowcase 11 is folded after passing through a folding machine.

The steps (1), (2), (4), (5) and (6) are continuously performed, the continuous cloth 10 is fed, and for the same pillowcase 11, the production process is performed through the steps (1), (2), (4), (5) and (6), the sequence of the step (3) is not directly related to other steps, and can be adjusted in place in advance before production, or two batches of pillowcases with different widths can be produced and converted in the production process.

The present utility model is not limited to the above embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present utility model.

Claims (10)

1. The utility model provides a production facility of cover bag, includes banding device, its characterized in that: the production equipment comprises two or more edge sealing devices and an adjusting device, wherein the two or more edge sealing devices are used for synchronously sealing edges of the bagging packaging edges, and the adjusting device is used for adjusting the width between two side edges of the bagging under the condition that the distance between two adjacent edge sealing devices is fixed.

2. A production facility for a casing bag according to claim 1, wherein: the adjusting device comprises an adjusting cloth roller, the bagging bypasses the adjusting cloth roller, two side edges of the bagging are respectively arranged on the two edge sealing devices, and the adjusting cloth roller has different adjusting positions, so that the bagging bypassing the adjusting cloth roller has a preset width.

3. A production facility for a casing bag according to claim 2, wherein: the adjusting cloth roller is arranged between two adjacent edge sealing devices and

the regulating cloth roller is longitudinally provided with a plurality of fixed positions or

The cloth adjusting roller moves longitudinally or obliquely, and the bagging is enabled to have a corresponding width by moving to a preset position.

4. A production facility for a casing bag according to claim 2, wherein: the cloth adjusting roller is arranged on the upper side or the lower side of the surface of the workbench of the edge sealing device, and a plurality of fixed positions or transverse movement are arranged on the horizontal plane of the cloth adjusting roller so that the bagging has a corresponding width.

5. A production facility for a casing bag according to claim 4, wherein: the cloth adjusting device comprises at least two cloth adjusting rollers, wherein each cloth adjusting roller at least comprises one movable cloth roller, and the movable cloth rollers are far away from or close to each other and used for changing the width of the bagging.

6. A production facility for a casing bag according to any one of claims 1 to 5, wherein: the edge sealing device is an ultrasonic welding device, the ultrasonic welding device is fixed on a support, the support is provided with a driving device for driving the support to move up and down, the support is connected to a moving beam, and the moving beam moves along a track arranged on production equipment and is used for driving the ultrasonic welding device to move along the length direction of the bagging for welding.

7. A production facility for a casing bag according to any one of claims 1 to 5, wherein: still include conveyor, discharging device and storage device, storage device includes the compensation cloth roller, and the compensation cloth roller is walked around to the cloth, the compensation cloth roller removes the delivery path length who changes the cloth under drive arrangement effect, the compensation cloth roller has when the travel speed that makes the cloth welding section static with cloth feed rate matching, and the cloth length of continuous feeding and the cloth length of discharging device ejection of compact are offset by the length that delivery path changes.

8. A production facility for a casing bag according to claim 7, wherein: the storage device comprises a first storage device and a second storage device, the first storage device and the second storage device further comprise a first fixed roller and a second fixed roller, the first fixed roller and the second fixed roller are arranged on the same side, the compensation cloth roller is arranged on the other side opposite to the first fixed roller and the second fixed roller, cloth feeding extends to a working area of the welding device through the first storage device, then extends to the discharging device through the second storage device from the working area of the welding device, the cloth winds around the first fixed roller of the first storage device, winds around the compensation cloth roller from the first fixed roller, winds around the second fixed roller from the compensation cloth roller, extends to the working area of the welding device from the second fixed roller, the conveying sequence of the cloth in the second storage device is opposite to that of the first storage device, the first storage device and the second storage device are connected on the same conveying belt, and the conveying belt drives the storage device to move away from or close to the corresponding first fixed roller and second fixed roller.

9. An automated pillowcase manufacturing line comprising the manufacturing apparatus of claim 8, wherein: still include loading attachment, hem device, tailor device and folding device, the cloth is double-deck cloth, and wherein the width of one deck cloth is greater than the entry that forms the pillow behind the another layer cloth is used for the hem, the cloth is fed by the loading attachment, forms the entry of pillow behind the flanging machine hem, warp production facility welds the side of pillowcase and forms a plurality of continuous pillowcases, tailor the device and tailor the middle part of welding seam and form solitary pillowcase, fold through folding device.

10. An automated pillowcase production method comprising the automated production line of claim 9, characterized in that: the method comprises the following steps:

(1) Feeding double-layer cloth, wherein the width of one layer of cloth is larger than that of the other layer of cloth, and the width of the cloth is the length of the cloth in the direction parallel to the welding seam;

(2) The cloth is fed to a flanging device, and the flanging device folds the longer cloth above the shorter cloth to form an inlet of the pillow core;

(3) Controlling the adjusting device to a preset position so that the width of the pillowcase between the edge sealing devices accords with a preset length;

(4) Conveying the folded cloth to working areas of two edge sealing devices through a first storage device, pressing down by a flat pressing device to enable the cloth of the edge sealing section to be static, and moving down by the edge sealing device and synchronously sealing two sides of the pillowcase; the feeding device and the discharging device continuously run while the edge sealing device seals edges, the conveying belt moves to enable the compensation cloth roller of the first storage device to move in the direction away from the first fixed roller of the first storage device, so that fed cloth is counteracted by an extended conveying path, the compensation cloth roller of the second storage device moves from a position away from the first fixed roller of the second storage device to a position of the first fixed roller, and the conveying path of the second storage device shortens to counteract the length of outwards discharged material of the discharging device;

(5) After the edge sealing device is used for edge sealing, the compensation cloth rolls of the first storage device and the second storage device are reset;

(6) The tearing and shearing device cuts along the central line of the edge sealing to form a pillowcase, and the pillowcase is folded after passing through a folding machine.