CN212448402U

CN212448402U - Folding and compressing structure suitable for vest bags of different specifications

Info

Publication number: CN212448402U
Application number: CN202021748285.4U
Authority: CN
Inventors: 纪树源
Original assignee: Shantou Jinping Fuxi Machinery Factory
Current assignee: Shantou Jinping Fuxi Machinery Factory
Priority date: 2020-08-19
Filing date: 2020-08-19
Publication date: 2021-02-02
Anticipated expiration: 2030-08-19

Abstract

The folding and pressing structure is suitable for different specifications of vest bags and comprises a folding synchronous adjusting mechanism, a folding press hook mechanism, a press plate pressing mechanism, a press plate synchronous adjusting mechanism, a bag lug pressing and folding driving mechanism, an adjustable press rod pressing mechanism, a lower fork mechanism, a fixing mechanism, an adjustable pipe positive plate mechanism and an adjustable material receiving mechanism; the utility model discloses according to the size of folding back different undershirt bags to the sub-size, through the folding synchronous control mechanism of control, come the distance between the synchronous control folding beam, thereby come the folding position of control undershirt bag head and bag tail, and the clamp plate synchronous control mechanism can the distance between the synchronous control clamp plate location structure, adapt to the undershirt bag of different width, need not to go the distance between the size of changing the clamp plate again or the manual regulation clamp plate, the clamp plate compresses tightly the bag body of undershirt bag, the skew around the undershirt bag probably takes place to control at folding in-process has been solved, the swing problem, finished product roughness has been improved.

Description

Folding and compressing structure suitable for vest bags of different specifications

Technical Field

The utility model relates to a folding compact structure of undershirt bag, especially a folding compact structure suitable for different specification undershirt bags.

Background

The vest bag is generally bundled to be sold, the bundling workshop process is to compress the vest bag, fold bag ears of the vest bag, turn over a bag head and a bag tail of the vest bag, and fold half of the vest bag by a lower fork mechanism to form a bundle and send the bundle to a feeding mechanism to complete the whole folding process, so that the subsequent process is directly influenced on the folding quality of the vest bag, and the folding mode of the vest bag is mainly to fold the vest bag body through a vest bag folding structure. The sizes of the vest bag handles are different, so that the distance of the folding structures needs to be adjusted, and the distance between the folding structures cannot be synchronously adjusted by adjusting the distance of one side of the folding mechanism and then adjusting the distance of the other side of the folding mechanism in the current market; according to the requirements of different vest bag widths, the sizes of the pressing plates with different specifications are generally manually replaced or the pressing plate mechanisms are manually adjusted to move, so that the distance between the pressing plate mechanisms is adjusted, the pressing plates reach the positions where the vest bags need to be pressed, the manual adjustment mode has no synchronism, the automation degree and the accuracy are low, and the packaging quality and the packaging efficiency are seriously influenced; meanwhile, the vest bag is in the folding process, and due to the lack of the pressing action on the bag ears and the bag body, the vest bag can swing when being folded, so that the subsequent processes are influenced.

SUMMERY OF THE UTILITY MODEL

To the not enough of above-mentioned prior art, the utility model provides a folding compact structure suitable for different specification undershirt bags.

In order to achieve the above object, the utility model adopts the following technical scheme: the folding and pressing structure is suitable for different specifications of vest bags and comprises a folding synchronous adjusting mechanism, a folding press hook mechanism, a press plate pressing mechanism, a press plate synchronous adjusting mechanism, a bag lug pressing and folding driving mechanism, an adjustable press rod pressing mechanism, a lower fork mechanism, a fixing mechanism, an adjustable pipe positive plate mechanism and an adjustable material receiving mechanism; the lower fork mechanism and the adjustable pressure bar pressing mechanism are arranged in parallel and are both connected with the fixing mechanism; the folding press hook mechanism is arranged below the lower fork mechanism; the folding synchronous adjusting mechanism is connected with the folding hook pressing mechanism, the folding hook pressing mechanism is arranged on the inner side of the fixing mechanism, and the folding synchronous adjusting mechanism is arranged on the outer side of the fixing mechanism; the bag ear pressing and folding mechanism is arranged above the folding and pressing hook mechanism; the adjustable pipe positive plate mechanism is arranged in front of the folding press hook mechanism; the adjustable material receiving mechanism is arranged below the pressing plate pressing mechanism; the pressing plate pressing mechanism is arranged below the folding hook pressing mechanism and connected with the folding hook pressing mechanism; the pressing plate synchronous adjusting mechanism is connected with the pressing plate pressing mechanism; the bag ear pressing and folding driving mechanism is in transmission connection with the bag ear pressing and folding mechanism; the folding synchronous adjusting mechanism drives the two folding press hook mechanisms, the press plate pressing mechanism and the press plate synchronous adjusting mechanism to move in opposite directions; the pressing plate synchronous adjusting mechanism drives the two pressing plate pressing mechanisms to move in opposite directions.

Preferably, the folding synchronous adjusting mechanism comprises a synchronous adjusting mechanism, a folding synchronous sliding mechanism and a synchronous power mechanism; the synchronous adjusting mechanism is connected with the folding synchronous sliding mechanism in a sliding manner and is in transmission connection with the synchronous power mechanism; the two groups of synchronous adjusting mechanisms are respectively a first synchronous adjusting mechanism and a second synchronous adjusting mechanism; the first synchronous adjusting mechanism comprises an orthodontic ball screw, a counter-orthodontic ball screw, a coupler, an orthodontic connecting plate, a counter-orthodontic connecting plate and a synchronous moving block; the synchronous moving block is arranged on the outer side of the fixing mechanism; the first synchronous adjusting mechanism is connected with the synchronous moving block through an orthodontic connecting plate and an anti-orthodontic connecting plate respectively; one end of the orthodontic ball screw is connected with the synchronous power mechanism, the other end of the orthodontic ball screw penetrates through the orthodontic connecting plate to be connected with the coupler, the anti-orthodontic ball screw penetrates through the anti-orthodontic connecting plate to be connected with the coupler, and the orthodontic ball screw and the anti-orthodontic ball screw are fixedly connected through the coupler; the second synchronous adjusting mechanism and the first synchronous adjusting mechanism have the same structure and are arranged on the other side of the folding press hook mechanism; a screw rod supporting plate is arranged at the joint of the orthodontic ball screw and the synchronous power mechanism; the folding synchronous sliding mechanism comprises a folding sliding block and a folding sliding rail; the folding sliding block is fixedly connected with the synchronous moving block; the folding sliding block is connected with the folding sliding rail in a sliding manner; the synchronous power mechanism comprises a synchronous motor, a motor driving wheel, a motor driven wheel and a synchronous driving belt; the synchronous motor is connected with the motor driving wheel; the motor driving wheel is connected with the motor driven wheel through a synchronous driving belt; the motor driven wheel is connected with the orthodontic ball screw; and the other side of the fixing mechanism is provided with a folding synchronous adjusting mechanism with the same structure.

Preferably, the folding hook pressing mechanism comprises a folding mechanism, a hook pressing mechanism and a folding driving mechanism. The folding mechanism is in transmission connection with the folding driving mechanism; the hook pressing mechanism is connected with the folding mechanism; the folding mechanism comprises a folding beam, a front turning plate, a rear turning plate, a turning joint, a turning round bar and a turning beam; the two ends of the turnover beam are respectively fixed on the two sides of the fixing mechanism through turnover joints, the front turnover plate and the rear turnover plate are respectively fixed on one turnover beam, and the front turnover plate and the rear turnover plate are horizontally arranged; the overturning joint is connected with the folding driving mechanism, and the overturning round bar and the folding beam are both connected with the fixing mechanism; the hook pressing mechanism comprises a hook pressing cylinder, a hook pressing and a hook pressing transmission mechanism; the press hook is connected with the press hook cylinder; the hook pressing transmission mechanism comprises a rack, a straight gear, a first bevel gear, a second bevel gear and a hook pressing rotating shaft; one end of the rack is connected with a cylinder shaft of the hook pressing cylinder, the rack is meshed with the straight-tooth gear, the straight-tooth gear is fixedly connected with the first bevel gear, the first bevel gear is meshed with the second bevel gear, the second bevel gear is fixedly connected with a hook pressing rotating shaft, and the hook pressing is fixed at one end of the hook pressing rotating shaft. The folding driving mechanisms are divided into two groups, namely a first folding driving mechanism and a second folding driving mechanism; the first folding driving mechanism comprises an overturning adjustable cylinder, a first gear, a first rotating shaft, a second gear, a second rotating shaft, an overturning fixing plate and an overturning limiting block; the second rotating shaft is connected with the turnover joint; a cylinder shaft of the turnover adjustable cylinder is connected with a first gear; the first gear is fixedly connected with the first rotating shaft, the second gear is fixedly connected with the second rotating shaft, the second gear is meshed with the first gear, and the overturning limiting blocks are respectively arranged on the left side and the right side of the first gear; clamp springs are arranged at the lower ends of the first rotating shaft and the second rotating shaft; the second folding driving mechanism and the first folding driving mechanism have the same structure, and the second folding driving mechanism is connected with the overturning joint at the rear overturning plate; the outer sides of the first rotating shaft and the second rotating shaft are provided with turnover bearings, and the turnover bearings are arranged on a turnover bearing seat; the turnover bearing block is fixed on the turnover fixing plate; and the other side of the fixing mechanism is provided with a turnover driving mechanism with the same structure.

Preferably, the pressing plate pressing mechanism comprises a plurality of groups of pressing plate positioning structures and pressing plate driving structures; the pressing plate synchronous adjusting mechanism comprises a bottom plate, a rectangular belt, a driving wheel and a plurality of driven wheels; the driving wheel and the driven wheels are arranged on the bottom plate; the rectangular belt is sleeved on the outer edges of the driving wheel and the driven wheels; the multiple groups of pressing plate positioning structures are fixed at the upper end and the lower end of the rectangular belt at intervals; the pressing plate driving structure is connected with the driving wheel; and a pressing plate sliding rail is arranged on the bottom plate. The plurality of groups of pressing plate positioning structures are provided with pressing plate sliding blocks; the pressing plate sliding block is connected with the pressing plate sliding rail in a sliding mode. The number of the driven wheels is three, and the three driven wheels are respectively a first driven wheel, a second driven wheel and a third driven wheel; the driving wheel and the three driven wheels are respectively arranged on four corners of the rectangular belt.

Preferably, the plurality of groups of pressure plate positioning structures are two groups, namely a first group of pressure plate positioning structures and a second group of pressure plate positioning structures; the first group of pressure plate positioning structures comprise a first pressure plate positioning structure and a second pressure plate positioning structure; the first pressing plate positioning structure comprises a positioning cylinder, an L-shaped plate and a positioning pressing plate; one end of the L-shaped plate is connected with the positioning cylinder, and the other end of the L-shaped plate is connected with the positioning pressing plate; the positioning cylinder is fixedly connected to one side of the rectangular belt; the second pressure plate positioning structure has the same structure as the first pressure plate positioning structure, and a positioning cylinder of the second pressure plate positioning structure is fixedly connected to the other side of the rectangular belt; the second group of pressing plate positioning structures and the first group of pressing plate positioning structures have the same structure.

Preferably, the fixing mechanism comprises a side plate, a front cross beam and a middle cross beam; the middle cross beam is arranged behind the front cross beam and arranged in parallel; two ends of the front cross beam and the middle cross beam are respectively fixedly connected with one side plate; the front cross beam is connected with the adjustable pressure bar pressing mechanism, the middle cross beam is connected with the lower fork mechanism, the outer side of the side plate is connected with the folding synchronous adjusting mechanism, and the inner side of the side plate is provided with the folding press hook mechanism. The lower fork mechanism comprises a lower fork, a lower fork fixing beam and a lower fork cylinder; the lower fork cylinder is connected with the fixing mechanism, and a cylinder shaft of the lower fork cylinder is connected with the lower fork fixing beam; the lower fork is connected with the lower fork fixing beam.

Preferably, the adjustable compression bar pressing mechanism comprises a front movable beam, a pressing cylinder, a compression bar adjustable seat and a compression bar; the lower air cylinder is connected with the fixing mechanism, and an air cylinder shaft of the lower air cylinder is connected with the front movable beam; the adjustable seat of the pressure lever is connected with the front movable beam, and the pressure lever is connected with the adjustable seat of the pressure lever; the lower air cylinder is fixed on the front cross beam, and an air cylinder shaft of the lower air cylinder penetrates through the front cross beam to be connected with the front movable beam; the lower end of the pressure lever is fixed with a rubber head.

Preferably, the bag ear pressing and folding mechanism comprises a bag ear sliding and folding mechanism, a bag ear flattening mechanism, a bag ear lifting mechanism and a bag ear sliding mechanism; the bag ear sliding and folding mechanism comprises an upper shifting fork and a lower shifting fork; the upper shifting fork, the lower shifting fork and the bag lug flattening mechanism are arranged in parallel, and the bag lug flattening mechanism is positioned below the lower shifting fork; the upper shifting fork and the lower shifting fork are both provided with shifting pieces; the shifting sheet of the upper shifting fork comprises a first shifting sheet and a second shifting sheet, and the shifting sheet of the lower shifting fork comprises a third shifting sheet and a fourth shifting sheet; the bag ear flattening mechanism comprises a gasket, a bag ear pressing plate cross beam and a bag ear pressing plate synchronous adjusting mechanism; the bag ear pressing plate is connected with the bag ear pressing plate synchronous adjusting mechanism, and the bag ear pressing plate synchronous adjusting mechanism and the pressing plate synchronous adjusting mechanism are completely the same in structure; a gasket is arranged above the bag lug pressing plate cross beam, and the lower part of the bag lug pressing plate cross beam is connected with the bag lug pressing plate; the bag ear lifting mechanism comprises a rack fixing plate, a bag ear lifting cross beam and a bag ear lifting cylinder; the bag ear lifting cylinder is fixed on the rack fixing plate, and a cylinder shaft of the bag ear lifting cylinder is connected with the bag ear lifting cross beam; the bag ear sliding and folding mechanism and the bag ear flattening mechanism are respectively connected with the bag ear lifting cross beam; the bag ear sliding mechanism comprises a bag ear sliding rail, a bag ear sliding rail sliding seat and a bag ear sliding cylinder; the bag ear sliding rail sliding seat is connected with the bag ear sliding rail, a cylinder shaft of the bag ear sliding cylinder is connected with the bag ear sliding rail sliding seat, the number of the bag ear sliding rail, the bag ear sliding rail sliding seat and the bag ear sliding cylinder is more than one, and the bag ear sliding rail sliding seat is respectively connected with the upper shifting fork and the lower shifting fork; the bag ear pressing and folding driving mechanism comprises a bag ear driving motor and a bag ear driving belt; the bag ear driving motor is in transmission connection with the bag ear driving belt, and the bag ear driving belt is connected with the bag ear pressing and folding mechanism.

Preferably, the adjustable material receiving mechanism comprises a material receiving bottom plate, a material receiving limiting lifting platform, a material receiving pressing air cylinder, a material receiving sliding rail, a material receiving sliding block, a material receiving hand fixing plate, a lifting air cylinder, a material receiving sliding mechanism and a material receiving driving mechanism; the material receiving and pressing cylinders are located on two sides of the material receiving bottom plate, the material receiving limiting lifting platform is fixed in the middle of the material receiving bottom plate, the material receiving slide rail is arranged on the material receiving bottom plate, the material receiving hand is fixed on the material receiving hand fixing plate, the material receiving hand fixing plate is fixed on the material receiving slide block and connected with the material receiving and pressing cylinders, the lifting cylinders are connected with the material receiving limiting lifting platform, and the material receiving lifting cylinders are connected with the material receiving bottom plate; the material receiving driving mechanism is in transmission connection with the material receiving bottom plate; the material receiving limiting lifting platform is provided with a material receiving groove; the material receiving sliding mechanism comprises a sliding fixed seat, a sliding rod and a sliding linear bearing seat; the sliding linear bearing block is connected with the adjustable material receiving mechanism; the two ends of the sliding rod are respectively connected with a sliding fixing seat, the sliding fixing seats are respectively arranged on two sides of the fixing mechanism, and the sliding linear bearing seat is sleeved on the sliding rod.

Preferably, the adjustable tube positive plate mechanism comprises a tube positive plate, a tube positive fixing plate, a tube positive plate bottom plate, a tube positive plate slide rail, a tube positive plate slide block, a tube positive plate synchronous adjusting mechanism, a tube positive plate sliding mechanism and a tube positive plate driving mechanism; the tube positive plate synchronous adjusting mechanism and the tube positive plate slide rail are arranged on the tube positive plate bottom plate, the tube positive plate slide block is connected with the tube positive plate synchronous adjusting mechanism, the tube positive plate slide rail is connected with the tube positive plate slide block in a sliding manner, the tube positive plate is connected with the tube positive plate synchronous adjusting mechanism, and the tube positive fixing plate is connected with the tube positive plate slide block; the tube positive plate sliding mechanisms are arranged on two sides of the tube positive plate bottom plate; the tube positive plate driving mechanism is in transmission connection with the tube positive plate bottom plate; the structure of the pipe positive plate synchronous adjusting mechanism is completely the same as that of the pressing plate synchronous adjusting mechanism.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses according to the size of different undershirt bag handle sizes after folding, through the folding synchronous regulating mechanism of control, come the distance between the synchronous regulation folding beam, come the folding position of control undershirt bag head and bag ear, and the synchronous regulating mechanism of clamp plate can the synchronous regulation clamp plate distance between the location structure, adapt to the undershirt bag of different width, need not to go to change the size of clamp plate again or the distance between the manual regulation clamp plate, the clamp plate compresses tightly the bag body of undershirt bag, the skew around probably taking place in the folding in-process of undershirt bag about, the swing problem has been solved, finished product roughness has been improved, the part that the depression bar compressed tightly the undershirt bag front end is folded simultaneously, can prevent the rebound from taking place after the undershirt bag is folded, and the position of depression bar can be adjusted through depression bar adjustable seat, thereby satisfy the needs of pushing down different positions of undershirt; meanwhile, the material receiving limiting lifting table of the adjustable material receiving mechanism can ensure that the vest bag is not deviated and the folding position is consistent, and meanwhile, the vest bag can be compressed, so that the vest bag is compact and does not collapse, preparation is made for subsequent bundling work, the work efficiency and accuracy of a workshop are ensured, the structure of each mechanism is simpler than that of equipment on the current market, and the mechanical cost is saved.

Drawings

Fig. 1 is a schematic view of the present invention.

Fig. 2 is a cross-sectional view at a-a in fig. 1.

Fig. 3 is a schematic structural diagram of the folding synchronous adjusting mechanism and the folding driving mechanism of the present invention.

Fig. 4 is a schematic structural diagram of the pressing plate pressing mechanism and the pressing plate synchronous adjusting mechanism of the present invention.

Fig. 5 is a schematic structural view of the bag ear folding mechanism of the present invention.

FIG. 6 is a schematic structural view of a front plate synchronous adjustment mechanism of the present invention

Fig. 7 is a schematic side view of the hook pressing mechanism of the present invention.

Fig. 8 is a schematic structural view of the hook pressing mechanism of the present invention.

Fig. 9 is a schematic structural diagram of the folding mechanism of the present invention.

Fig. 10 is a working principle diagram of the adjustable receiving mechanism of the present invention.

Fig. 11 is a schematic structural diagram of the adjustable receiving mechanism of the present invention.

Fig. 12 is a working principle diagram of the synchronous adjusting mechanism of the present invention.

Fig. 13 is a schematic structural diagram of the adjustable tube positive plate mechanism of the present invention.

In the figure: 1-a folding synchronous adjusting mechanism; 2-folding press hook mechanism; 3-a lower fork mechanism; 4-a fixing mechanism; 5-a pressing plate pressing mechanism; 6-adjustable compression bar pressing mechanism; 7-adjustable receiving mechanism; 8-bag ear pressing and folding mechanism; 9-bag ear pressing and folding driving mechanism; 10-a platen synchronous adjustment mechanism; 11-vest pockets; 12-an adjustable tube positive plate mechanism; 110-an orthodontic ball screw; 111-reverse-tooth ball screw; 112-a coupling; 113-a synchronous moving block; 114-an orthodontic connection plate; 115-a contra-dental lamina; 116-a screw mandrel support plate; 117-folding slider; 118-folding slide rail; 119-a synchronous machine; 120-motor drive wheel; 121-motor driven wheel; 122-synchronous drive belt; 210-a folded beam; 211-a front flap; 212-rear flap; 213-flip joint; 214-a flip beam; 215-turning the round bar; 220-hook pressing cylinder; 221-pressing hooks; 222-a rack; 223-straight toothed gear; 224-a first bevel gear; 225-second bevel gear; 226-press hook rotating shaft; 230-overturning the adjustable cylinder; 231-a first gear; 232-a first rotating shaft; 233-a second gear; 234-a second shaft; 235-turning over the fixed plate; 236-a turnover limiting block; 237-a circlip; 238-tilting the bearing; 239-overturning the bearing seat; 310-lower fork; 311-lower fork fixed beam; 312-lower fork cylinder; 410-side plate; 411-front beam; 412-middle cross beam; 510-a backplane; 511-rectangular belt; 512-driving wheel; 513 — a first driven wheel; 514-a second driven wheel; 515-a third driven wheel; 516-platen slide; 517-platen slide rail; 520-positioning air cylinder; 521-L-shaped plates; 522-positioning the press plate; 523-platen drive configuration; 610-front walking beam; 611-a down-pressure cylinder; 612-a pressure bar adjustable seat; 613-compression bar; 614-glue head; 710-receiving floor; 711-material receiving limiting lifting table; 712-material-receiving compacting cylinder; 713-material receiving slide rail; 714-material receiving slide block; 715-material receiving hand; 716-a material receiving hand fixing plate; 717-lifting cylinder; 718-a material receiving lifting cylinder; 719-sliding fixed seat; 720-a slide bar; 721-sliding linear bearing block; 722-a material receiving driving mechanism; 810-a rack fixing plate; 811-bag ear lifting beam; 812-bag ear slide carriage; 813-pocket ear sliding cylinder; 814-upper fork; 815-lower shifting fork; 816-bag ear slide rail; 817-a gasket; 818-bag ear press plate; 819-bag ear platen beam; 820-bag ear lifting cylinder; 821-a first plectrum; 822-a second paddle; 823-third plectrum; 824-fourth paddle; 910-tube positive plate; 911-tube positive fixation plate; 912-tube positive plate slider; 913-a tube positive plate slide rail; 914-tube positive plate sliding mechanism; 915-tube positive plate bottom plate; 916-tube positive plate driving mechanism.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1-13: the folding and pressing structure is suitable for vest bags 11 of different specifications and comprises a folding synchronous adjusting mechanism 1, a folding hook pressing mechanism 2, a pressing plate pressing mechanism 5, a pressing plate synchronous adjusting mechanism 10, a bag lug pressing and folding mechanism 8, a bag lug pressing and folding driving mechanism 9, an adjustable pressing rod pressing mechanism 6, a lower fork mechanism 3, a fixing mechanism 4, an adjustable tube positive plate mechanism and an adjustable material receiving mechanism 7; the lower fork mechanism 3 and the adjustable pressure bar pressing mechanism 6 are arranged in parallel and are both connected with the fixing mechanism 4; the folding hook pressing mechanism 2 is arranged below the lower fork mechanism 3; the folding synchronous adjusting mechanism 1 is connected with the folding hook pressing mechanism 2, the folding hook pressing mechanism 2 is arranged on the inner side of the fixing mechanism 4, and the folding synchronous adjusting mechanism 1 is arranged on the outer side of the fixing mechanism 4; the bag ear pressing and folding mechanism 8 is arranged above the folding press hook mechanism 2; the adjustable pipe positive plate mechanism is arranged in front of the folding hook pressing mechanism 2; the adjustable receiving mechanism 7 is arranged below the pressing plate pressing mechanism 5; the pressing plate pressing mechanism 5 is arranged below the folding hook pressing mechanism 2 and connected with the folding hook pressing mechanism; the pressing plate synchronous adjusting mechanism 10 is connected with the pressing plate pressing mechanism 5; the bag ear pressing and folding driving mechanism 9 is in transmission connection with the bag ear pressing and folding mechanism 8; the folding synchronous adjusting mechanism 1 drives the two folding press hook mechanisms 2, the press plate pressing mechanism 5 and the press plate synchronous adjusting mechanism 10 to move in opposite directions; the pressing plate synchronous adjusting mechanism 10 drives the two pressing plate pressing mechanisms 5 to move in opposite directions. The folding synchronous adjusting mechanism 1 comprises a synchronous adjusting mechanism, a folding synchronous sliding mechanism and a synchronous power mechanism; the synchronous adjusting mechanism is connected with the folding synchronous sliding mechanism in a sliding manner and is in transmission connection with the synchronous power mechanism; the two groups of synchronous adjusting mechanisms are respectively a first synchronous adjusting mechanism and a second synchronous adjusting mechanism; the first synchronous adjusting mechanism comprises an orthodontic ball screw 110, an anti-orthodontic ball screw 111, a coupler 112, an orthodontic connecting plate 114, an anti-orthodontic connecting plate 115 and a synchronous moving block 113; the synchronous moving block 113 is arranged on the outer side of the fixing mechanism 4; the first synchronous adjustment mechanism is respectively connected with a synchronous moving block 113 through an orthodontic connecting plate 114 and an anti-orthodontic connecting plate 115; one end of the orthodontic ball screw 110 is connected with the synchronous power mechanism, the other end of the orthodontic ball screw penetrates through the orthodontic connecting plate 114 to be connected with the coupler 112, the anti-orthodontic ball screw 111 penetrates through the anti-orthodontic connecting plate 115 to be connected with the coupler 112, and the orthodontic ball screw 110 is fixedly connected with the anti-orthodontic ball screw 111 through the coupler 112; the second synchronous adjusting mechanism and the first synchronous adjusting mechanism have the same structure and are arranged on the other side of the folding hook pressing mechanism 2; a screw rod supporting plate 116 is arranged at the joint of the orthodontic ball screw rod 110 and the synchronous power mechanism; the folding synchronous sliding mechanism comprises a folding sliding block 117 and a folding sliding rail 118; the folding slide block 117 is fixedly connected with the synchronous moving block 113; the folding slider 117 is slidably connected with the folding slide rail 118; the synchronous power mechanism comprises a synchronous motor 119, a motor driving wheel 120, a motor driven wheel 121 and a synchronous driving belt 122; the synchronous motor 119 is connected with a motor driving wheel 120; the motor driving wheel 120 is connected with the motor driven wheel 121 through a synchronous driving belt 122; the motor driven wheel 121 is connected with the orthodontic ball screw 110; and the other side of the fixing mechanism 4 is provided with a folding synchronous adjusting mechanism 1 with the same structure. The folding hook pressing mechanism 2 comprises a folding mechanism, a hook pressing mechanism and a folding driving mechanism. The folding mechanism is in transmission connection with the folding driving mechanism; the hook pressing mechanism is connected with the folding mechanism; the folding mechanism comprises a folding beam 210, a front turnover plate 211, a rear turnover plate 212, a turnover joint 213, a turnover round bar 215 and a turnover beam 214; two ends of the turning beam 214 are respectively fixed on two sides of the fixing mechanism 4 through turning joints 213, the front turning plate 211 and the rear turning plate 212 are respectively fixed on one turning beam 214, and the front turning plate 211 and the rear turning plate 212 are horizontally arranged; the overturning joint 213 is connected with a folding driving mechanism, and both the overturning round bar 215 and the folding beam 210 are connected with the fixing mechanism 4; the hook pressing mechanism comprises a hook pressing cylinder 220, a hook pressing 221 and a hook pressing transmission mechanism; the press hook 221 is connected with the press hook cylinder 220; the hook pressing transmission mechanism comprises a rack 222, a straight gear 223, a first bevel gear 224, a second bevel gear 225 and a hook pressing rotating shaft 226; one end of the rack 222 is connected with a cylinder shaft of the hook pressing cylinder 220, the rack 222 is meshed with a straight gear 223, the straight gear is fixedly connected with a first bevel gear 224 of the straight gear 223, the first bevel gear 224 is meshed with a second bevel gear 225, the second bevel gear 225 is fixedly connected with a hook pressing rotating shaft 226, and the hook pressing 221 is fixed at one end of the hook pressing rotating shaft 226. The folding driving mechanisms are divided into two groups, namely a first folding driving mechanism and a second folding driving mechanism; the first folding driving mechanism comprises an overturning adjustable cylinder 230, a first gear 231, a first rotating shaft 232, a second gear 233, a second rotating shaft 234, an overturning fixing plate 235 and an overturning limiting block 236; the second rotating shaft 232 is connected with the turnover joint 213; the cylinder shaft of the roll-over adjustable cylinder 230 is connected with a first gear 231; the first gear 231 is fixedly connected with the first rotating shaft 232, the second gear 233 is fixedly connected with the second rotating shaft 234, the second gear 233 is meshed with the first gear 231, and the turning limiting blocks 236 are respectively arranged at the left side and the right side of the first gear 231; clamp springs 237 are arranged at the lower ends of the first rotating shaft 232 and the second rotating shaft 234; the second folding driving mechanism and the first folding driving mechanism have the same structure, and the second folding driving mechanism is connected with the turning joint 213 at the rear turning plate 212; the outer sides of the first rotating shaft 232 and the second rotating shaft 234 are provided with turnover bearings 238, and the turnover bearings 238 are mounted on turnover bearing seats 239; the overturning bearing block 239 is fixed on the overturning fixing plate 235; and the other side of the fixing mechanism 4 is provided with a turnover driving mechanism with the same structure. The pressing plate pressing mechanism 5 comprises a plurality of groups of pressing plate positioning structures and pressing plate driving structures; the pressing plate synchronous adjusting mechanism 10 comprises a bottom plate 510, a rectangular belt 511, a driving wheel 512 and a plurality of driven wheels; the driving wheel 512 and a plurality of driven wheels are arranged on the bottom plate 510; the rectangular belt 511 is sleeved on the outer edges of the driving wheel 512 and the driven wheels; the multiple groups of pressure plate positioning structures are fixed at the upper end and the lower end of the rectangular belt 511 at intervals; the pressing plate driving structure is connected with the driving wheel 512; and a pressing plate sliding rail 517 is arranged on the bottom plate 510. The pressing plate sliding blocks 516 are arranged on the plurality of groups of pressing plate positioning structures; the pressing plate sliding block 516 is connected with a pressing plate sliding rail 517 in a sliding manner. The number of the driven wheels is three, namely a first driven wheel 513, a second driven wheel 514 and a third driven wheel 515; the driving pulley 512 and the three driven pulleys are respectively arranged at four corners of the rectangular belt 511. The plurality of groups of pressure plate positioning structures are two groups, namely a first group of pressure plate positioning structures and a second group of pressure plate positioning structures; the first group of pressure plate positioning structures comprise a first pressure plate positioning structure and a second pressure plate positioning structure; the first pressure plate positioning structure comprises a positioning cylinder 520, an L-shaped plate 521 and a positioning pressure plate 522; one end of the L-shaped plate 521 is connected with the positioning cylinder 520, and the other end of the L-shaped plate 521 is connected with the positioning pressing plate 522; the positioning cylinder 520 is fixedly connected to one side of the rectangular belt 511; the second pressure plate positioning structure has the same structure as the first pressure plate positioning structure, and a positioning cylinder of the second pressure plate positioning structure is fixedly connected to the other side of the rectangular belt 511; the second group of pressing plate positioning structures and the first group of pressing plate positioning structures have the same structure. The fixing mechanism 4 comprises a side plate 410, a front cross beam 411 and a middle cross beam 412; the middle cross beam 412 is arranged behind the front cross beam 411, and the middle cross beam and the front cross beam are arranged in parallel; two ends of the front cross beam 411 and the middle cross beam 412 are respectively fixedly connected with one side plate 410; the front beam 411 is connected with the pressing mechanism 6 with the adjustable pressing rod, the middle beam 412 is connected with the lower fork mechanism 3, the outer side of the side plate 410 is connected with the folding synchronous adjusting mechanism 1, and the inner side is provided with the folding press hook mechanism 2. The lower fork mechanism 3 comprises a lower fork 310, a lower fork fixing beam 311 and a lower fork cylinder 312; the lower fork cylinder 312 is connected with the fixing mechanism 4, and the cylinder shaft of the lower fork cylinder is connected with the lower fork fixing beam 311; the lower fork 310 is connected to a lower fork fixing beam 311. The adjustable pressure bar pressing mechanism 6 comprises a front movable beam 610, a pressing cylinder 611, a pressure bar adjustable seat 612 and a pressure bar 613; the downward-pressing cylinder 611 is connected with the fixing mechanism 4, and the cylinder shaft of the downward-pressing cylinder is connected with the front movable beam 610; the pressure lever adjustable seat 612 is connected with the front movable beam 610, and the pressure lever 613 is connected with the pressure lever adjustable seat 612; the down-pressing cylinder 611 is fixed on the front cross beam 411, and the cylinder shaft of the down-pressing cylinder 611 passes through the front cross beam 411 and is connected with the front movable beam 610; a rubber head 614 is fixed at the lower end of the pressure rod 613. The bag ear pressing and folding mechanism 8 comprises a bag ear sliding and folding mechanism, a bag ear flattening mechanism, a bag ear lifting mechanism and a bag ear sliding mechanism; the bag ear sliding and folding mechanism comprises an upper shifting fork 814 and a lower shifting fork 815; the upper shifting fork 814, the lower shifting fork 815 and the bag lug flattening mechanism are arranged in parallel, and the bag lug flattening mechanism is positioned below the lower shifting fork 815; the upper shifting fork 814 and the lower shifting fork 815 are respectively provided with a shifting piece; the shifting piece of the upper shifting fork 814 comprises a first shifting piece 821 and a second shifting piece 822, and the shifting piece of the lower shifting fork comprises a third shifting piece 823 and a fourth shifting piece 824; the bag ear flattening mechanism comprises a gasket 817, a bag ear pressing plate 818, a bag ear pressing plate cross beam 819 and a bag ear pressing plate synchronous adjusting mechanism 10; the bag ear pressing plate 818 is connected with the bag ear pressing plate synchronous adjusting mechanism 10, and the bag ear pressing plate synchronous adjusting mechanism 10 and the pressing plate synchronous adjusting mechanism 10 have the same structure; a gasket 817 is arranged above the bag ear pressing plate cross beam 819, and the lower part of the bag ear pressing plate cross beam 819 is connected with the bag ear pressing plate 818; the bag ear lifting mechanism comprises a rack fixing plate 810, a bag ear lifting beam 811 and a bag ear lifting cylinder 820; the bag ear lifting cylinder 820 is fixed on the rack fixing plate 810, and the cylinder shaft of the bag ear lifting cylinder is connected with the bag ear lifting beam 811; the bag ear sliding and folding mechanism and the bag ear flattening mechanism are respectively connected with a bag ear lifting cross beam 811; the bag ear sliding mechanism comprises a bag ear sliding rail 816, a bag ear sliding rail sliding seat 812 and a bag ear sliding cylinder 813; the bag ear slide rail slide carriage 812 is connected with the bag ear slide rail 816, a cylinder shaft of the bag ear slide cylinder 813 is connected with the bag ear slide rail slide carriage 812, the number of the bag ear slide rail 816, the bag ear slide rail slide carriage 812 and the bag ear slide cylinder 813 is more than one, and the bag ear slide rail slide carriage 812 is respectively connected with the upper shifting fork 814 and the lower shifting fork 815; the bag ear pressing and folding driving mechanism 9 comprises a bag ear driving motor and a bag ear driving belt; the bag ear driving motor is in transmission connection with the bag ear driving belt, and the bag ear driving belt is connected with the bag ear pressing and folding mechanism 8. The adjustable material receiving mechanism 7 comprises a material receiving bottom plate 710, a material receiving limiting lifting platform 711, a material receiving pressing cylinder 712, a material receiving sliding rail 713, a material receiving sliding block 714, a material receiving hand 715, a material receiving hand fixing plate 716, a lifting cylinder 717, a material receiving lifting cylinder 718, a material receiving sliding mechanism and a material receiving driving mechanism 722; the material receiving pressing cylinders 712 are positioned at two sides of the material receiving bottom plate 710, the material receiving limiting lifting platform 711 is fixed in the middle of the material receiving bottom plate 710, the material receiving sliding rails 713 are arranged on the material receiving bottom plate 710, the material receiving hands 715 are fixed on the material receiving hand fixing plates 716, the material receiving hand fixing plates 716 are fixed on the material receiving sliding blocks 714 and are connected with the material receiving pressing cylinders 718, the lifting cylinders 717 are connected with the material receiving limiting lifting platform 711, and the material receiving lifting cylinders 718 are connected with the material receiving bottom plate 710; the material receiving driving mechanism 722 is in transmission connection with the material receiving bottom plate 710; the material receiving limiting lifting platform 711 is provided with a material receiving groove; the material receiving sliding mechanism comprises a sliding fixed seat 719, a sliding rod 720 and a sliding linear bearing seat 721; the sliding linear bearing seat 721 is connected with the adjustable receiving mechanism 7; the two ends of the sliding rod 720 are respectively connected with a sliding fixing seat 719, the sliding fixing seats 719 are respectively arranged at two sides of the fixing mechanism 4, and the sliding linear bearing seat 721 is sleeved on the sliding rod 720. The adjustable tube positive plate mechanism comprises a tube positive plate 910, a tube positive fixing plate 911, a tube positive plate bottom plate 915, a tube positive plate sliding rail 913, a tube positive plate sliding block 912, a tube positive plate synchronous adjusting mechanism, a tube positive plate sliding mechanism 914 and a tube positive plate driving mechanism 916; the tube positive plate synchronous adjusting mechanism and the tube positive plate sliding rail 913 are arranged on the tube positive plate bottom plate 915, the tube positive plate sliding block 912 is connected with the tube positive plate synchronous adjusting mechanism, the tube positive plate sliding rail 913 is connected with the tube positive plate sliding block 912 in a sliding manner, the tube positive plate 910 is connected with the tube positive plate synchronous adjusting mechanism, and the tube positive fixing plate 911 is connected with the tube positive plate sliding block 912; the tube front plate sliding mechanisms 914 are arranged on two sides of the tube front plate bottom plate 915; the tube positive plate driving mechanism 916 is in transmission connection with the tube positive plate bottom plate 915; the tube positive plate synchronous adjusting mechanism and the pressing plate synchronous adjusting mechanism 10 are completely the same in structure.

The utility model discloses a theory of operation is: when the folding mechanism works, a vest bag is conveyed to the folding mechanism through the adjustable tube positive plate mechanism, the positioning pressure plate presses the vest bag, the bag ear pressing and folding driving mechanism can drive the bag ear pressing and folding mechanism to move above a vest bag ear, the first shifting piece and the second shifting piece of the upper shifting fork slide from left to right to fold the left bag ear, the third shifting piece and the fourth shifting piece of the lower shifting fork slide from right to left to fold the right bag ear, then the pressure hook can turn over upwards to press the folded bag ear, then the bag ear pressing and folding mechanism resets, the folding driving mechanism can drive the front turning plate and the rear turning plate of the folding mechanism to fold along the position pressed by the positioning pressure plate, after the front turning plate folds the bag head, the pressure rod can move downwards to press the vest bag head, the front turning plate and the pressure hook reset, then the rear turning plate folds the bag tail, when the lower fork moves downwards, the rear turning plate and the pressure plate reset mechanism, the lower fork is folded along the middle of the vest bag and is conveyed into the adjustable material receiving mechanism, and the adjustable material receiving mechanism conveys the folded vest bag away to complete the whole folding and pressing process. When the specification of the folded vest bag handle needs to be changed, the folding mechanism is adjusted by changing the relative distance between the folding mechanisms, the synchronous motor is controlled to rotate to drive the synchronous wheel to rotate, when the synchronous motor rotates forwards, the orthodontic ball screw and the anti-orthodontic ball screw which are connected with the coupler rotate, the orthodontic connecting plate and the anti-orthodontic connecting plate can respectively drive the folding beams to move synchronously, the distance between the folding beams can be increased at the moment, the folding vest bag is suitable for a big handle, when the synchronous motor rotates backwards, the distance between the folding beams can be decreased, the vest bag is suitable for a small handle, as shown in figure 12, the distance between the folding beams is B, and the size of the folded handle is B/2; when the vest bags with different widths are replaced, the pressing plate synchronous adjusting mechanism, the bag ear pressing plate synchronous adjusting mechanism and the tube positive plate synchronous adjusting mechanism can be adjusted step by step, and the distances among the mechanisms are synchronously adjusted according to different widths; the pressing plate synchronous adjusting mechanism is characterized in that the L-shaped plate is pushed by the positioning cylinder through synchronously adjusting the distance between the pressing plate positioning structures, the pressing plate driving structure is used for adjusting the distance between the pressing plate positioning structures to enable the pressing plate positioning structures to synchronously move to adapt to the width of the vest bag, and then the L-shaped plate is retracted by the positioning cylinder to press the vest bag; the working principle and the structure of the bag ear pressing plate synchronous adjusting mechanism and the tube positive plate synchronous adjusting mechanism are consistent with those of the pressing plate synchronous adjusting mechanism.

Claims

1. Folding compact structure suitable for different specification undershirt bags, its characterized in that: the bag ear folding and pressing device comprises a folding synchronous adjusting mechanism, a folding press hook mechanism, a press plate pressing mechanism, a press plate synchronous adjusting mechanism, a bag ear pressing and folding driving mechanism, an adjustable press rod pressing mechanism, a lower fork mechanism, a fixing mechanism, an adjustable pipe positive plate mechanism and an adjustable material receiving mechanism; the lower fork mechanism and the adjustable pressure bar pressing mechanism are arranged in parallel and are both connected with the fixing mechanism; the folding press hook mechanism is arranged below the lower fork mechanism; the folding synchronous adjusting mechanism is connected with the folding hook pressing mechanism, the folding hook pressing mechanism is arranged on the inner side of the fixing mechanism, and the folding synchronous adjusting mechanism is arranged on the outer side of the fixing mechanism; the bag ear pressing and folding mechanism is arranged above the folding and pressing hook mechanism; the adjustable pipe positive plate mechanism is arranged in front of the folding press hook mechanism; the adjustable material receiving mechanism is arranged below the pressing plate pressing mechanism; the pressing plate pressing mechanism is arranged below the folding hook pressing mechanism and connected with the folding hook pressing mechanism; the pressing plate synchronous adjusting mechanism is connected with the pressing plate pressing mechanism; the bag ear pressing and folding driving mechanism is in transmission connection with the bag ear pressing and folding mechanism.

2. The folding and compressing structure suitable for different sizes of vest bags according to claim 1, wherein: the folding synchronous adjusting mechanism comprises a synchronous adjusting mechanism, a folding synchronous sliding mechanism and a synchronous power mechanism; the synchronous adjusting mechanism is connected with the folding synchronous sliding mechanism in a sliding manner and is in transmission connection with the synchronous power mechanism; the two groups of synchronous adjusting mechanisms are respectively a first synchronous adjusting mechanism and a second synchronous adjusting mechanism; the first synchronous adjusting mechanism comprises an orthodontic ball screw, a counter-orthodontic ball screw, a coupler, an orthodontic connecting plate, a counter-orthodontic connecting plate and a synchronous moving block; the synchronous moving block is arranged on the outer side of the fixing mechanism; the first synchronous adjusting mechanism is connected with the synchronous moving block through an orthodontic connecting plate and an anti-orthodontic connecting plate respectively; one end of the orthodontic ball screw is connected with the synchronous power mechanism, the other end of the orthodontic ball screw penetrates through the orthodontic connecting plate to be connected with the coupler, the anti-orthodontic ball screw penetrates through the anti-orthodontic connecting plate to be connected with the coupler, and the orthodontic ball screw and the anti-orthodontic ball screw are fixedly connected through the coupler; the second synchronous adjusting mechanism and the first synchronous adjusting mechanism have the same structure and are arranged on the other side of the folding press hook mechanism; a screw rod supporting plate is arranged at the joint of the orthodontic ball screw and the synchronous power mechanism; the folding synchronous sliding mechanism comprises a folding sliding block and a folding sliding rail; the folding sliding block is fixedly connected with the synchronous moving block; the folding sliding block is connected with the folding sliding rail in a sliding manner; the synchronous power mechanism comprises a synchronous motor, a motor driving wheel, a motor driven wheel and a synchronous driving belt; the synchronous motor is connected with the motor driving wheel; the motor driving wheel is connected with the motor driven wheel through a synchronous driving belt; the motor driven wheel is connected with the orthodontic ball screw; and the other side of the fixing mechanism is provided with a folding synchronous adjusting mechanism with the same structure.

3. A folding and compressing structure suitable for different sizes of vest bags according to claim 2, wherein: the folding hook pressing mechanism comprises a folding mechanism, a hook pressing mechanism and a folding driving mechanism; the folding mechanism is in transmission connection with the folding driving mechanism; the hook pressing mechanism is connected with the folding mechanism; the folding mechanism comprises a folding beam, a front turning plate, a rear turning plate, a turning joint, a turning round bar and a turning beam; the two ends of the turnover beam are respectively fixed on the two sides of the fixing mechanism through turnover joints, the front turnover plate and the rear turnover plate are respectively fixed on one turnover beam, and the front turnover plate and the rear turnover plate are horizontally arranged; the overturning joint is connected with the folding driving mechanism, and the overturning round bar and the folding beam are both connected with the fixing mechanism; the hook pressing mechanism comprises a hook pressing cylinder, a hook pressing and a hook pressing transmission mechanism; the press hook is connected with the press hook cylinder; the hook pressing transmission mechanism comprises a rack, a straight gear, a first bevel gear, a second bevel gear and a hook pressing rotating shaft; one end of the rack is connected with a cylinder shaft of the hook pressing cylinder, the rack is meshed with a straight-tooth gear, the straight-tooth gear is fixedly connected with a first bevel gear, the first bevel gear is meshed with a second bevel gear, the second bevel gear is fixedly connected with a hook pressing rotating shaft, and the hook pressing is fixed at one end of the hook pressing rotating shaft; the folding driving mechanisms are divided into two groups, namely a first folding driving mechanism and a second folding driving mechanism; the first folding driving mechanism comprises an overturning adjustable cylinder, a first gear, a first rotating shaft, a second gear, a second rotating shaft, an overturning fixing plate and an overturning limiting block; the second rotating shaft is connected with the turnover joint; a cylinder shaft of the turnover adjustable cylinder is connected with a first gear; the first gear is fixedly connected with the first rotating shaft, the second gear is fixedly connected with the second rotating shaft, the second gear is meshed with the first gear, and the overturning limiting blocks are respectively arranged on the left side and the right side of the first gear; clamp springs are arranged at the lower ends of the first rotating shaft and the second rotating shaft; the second folding driving mechanism and the first folding driving mechanism have the same structure, and the second folding driving mechanism is connected with the overturning joint at the rear overturning plate; the outer sides of the first rotating shaft and the second rotating shaft are provided with turnover bearings, and the turnover bearings are arranged on a turnover bearing seat; the turnover bearing block is fixed on the turnover fixing plate; and the other side of the fixing mechanism is provided with a turnover driving mechanism with the same structure.

4. The folding and compressing structure suitable for different sizes of vest bags according to claim 1, wherein: the pressing plate pressing mechanism comprises a plurality of groups of pressing plate positioning structures and pressing plate driving structures; the pressing plate synchronous adjusting mechanism comprises a bottom plate, a rectangular belt, a driving wheel and a plurality of driven wheels; the driving wheel and the driven wheels are arranged on the bottom plate; the rectangular belt is sleeved on the outer edges of the driving wheel and the driven wheels; the multiple groups of pressing plate positioning structures are fixed at the upper end and the lower end of the rectangular belt at intervals; the pressing plate driving structure is connected with the driving wheel; the bottom plate is provided with a pressing plate slide rail; the plurality of groups of pressing plate positioning structures are provided with pressing plate sliding blocks; the pressing plate sliding block is connected with the pressing plate sliding rail in a sliding manner; the number of the driven wheels is three, and the three driven wheels are respectively a first driven wheel, a second driven wheel and a third driven wheel; the driving wheel and the three driven wheels are respectively arranged on four corners of the rectangular belt.

5. The folding and compressing structure suitable for different sizes of vest bags according to claim 4, wherein: the plurality of groups of pressure plate positioning structures are two groups, namely a first group of pressure plate positioning structures and a second group of pressure plate positioning structures; the first group of pressure plate positioning structures comprise a first pressure plate positioning structure and a second pressure plate positioning structure; the first pressing plate positioning structure comprises a positioning cylinder, an L-shaped plate and a positioning pressing plate; one end of the L-shaped plate is connected with the positioning cylinder, and the other end of the L-shaped plate is connected with the positioning pressing plate; the positioning cylinder is fixedly connected to one side of the rectangular belt; the second pressure plate positioning structure has the same structure as the first pressure plate positioning structure, and a positioning cylinder of the second pressure plate positioning structure is fixedly connected to the other side of the rectangular belt; the second group of pressing plate positioning structures and the first group of pressing plate positioning structures have the same structure.

6. The folding and compressing structure suitable for different sizes of vest bags according to claim 1, wherein: the fixing mechanism comprises a side plate, a front cross beam and a middle cross beam; the middle cross beam is arranged behind the front cross beam and arranged in parallel; two ends of the front cross beam and the middle cross beam are respectively fixedly connected with one side plate; the front cross beam is connected with the adjustable pressure bar pressing mechanism, the middle cross beam is connected with the lower fork mechanism, the outer side of the side plate is connected with the folding synchronous adjusting mechanism, and the inner side of the side plate is provided with a folding press hook mechanism; the lower fork mechanism comprises a lower fork, a lower fork fixing beam and a lower fork cylinder; the lower fork cylinder is connected with the fixing mechanism, and a cylinder shaft of the lower fork cylinder is connected with the lower fork fixing beam; the lower fork is connected with the lower fork fixing beam.

7. The folding and compressing structure suitable for different sizes of vest bags according to claim 6, wherein: the adjustable compression bar pressing mechanism comprises a front movable beam, a pressing cylinder, a compression bar adjustable seat and a compression bar; the lower air cylinder is connected with the fixing mechanism, and an air cylinder shaft of the lower air cylinder is connected with the front movable beam; the adjustable seat of the pressure lever is connected with the front movable beam, and the pressure lever is connected with the adjustable seat of the pressure lever; the lower air cylinder is fixed on the front cross beam, and an air cylinder shaft of the lower air cylinder penetrates through the front cross beam to be connected with the front movable beam; the lower end of the pressure lever is fixed with a rubber head.

8. The folding and compressing structure suitable for different sizes of vest bags according to claim 1, wherein: the bag ear pressing and folding mechanism comprises a bag ear sliding and folding mechanism, a bag ear pressing and flattening mechanism, a bag ear lifting mechanism and a bag ear sliding mechanism; the bag ear sliding and folding mechanism comprises an upper shifting fork and a lower shifting fork; the upper shifting fork, the lower shifting fork and the bag lug flattening mechanism are arranged in parallel, and the bag lug flattening mechanism is positioned below the lower shifting fork; the upper shifting fork and the lower shifting fork are both provided with shifting pieces; the shifting sheet of the upper shifting fork comprises a first shifting sheet and a second shifting sheet, and the shifting sheet of the lower shifting fork comprises a third shifting sheet and a fourth shifting sheet; the bag ear flattening mechanism comprises a gasket, a bag ear pressing plate cross beam and a bag ear pressing plate synchronous adjusting mechanism; the bag ear pressing plate is connected with the bag ear pressing plate synchronous adjusting mechanism, and the bag ear pressing plate synchronous adjusting mechanism and the pressing plate synchronous adjusting mechanism are completely the same in structure; a gasket is arranged above the bag lug pressing plate cross beam, and the lower part of the bag lug pressing plate cross beam is connected with the bag lug pressing plate; the bag ear lifting mechanism comprises a rack fixing plate, a bag ear lifting cross beam and a bag ear lifting cylinder; the bag ear lifting cylinder is fixed on the rack fixing plate, and a cylinder shaft of the bag ear lifting cylinder is connected with the bag ear lifting cross beam; the bag ear sliding and folding mechanism and the bag ear flattening mechanism are respectively connected with the bag ear lifting cross beam; the bag ear sliding mechanism comprises a bag ear sliding rail, a bag ear sliding rail sliding seat and a bag ear sliding cylinder; the bag ear sliding rail sliding seat is connected with the bag ear sliding rail, a cylinder shaft of the bag ear sliding cylinder is connected with the bag ear sliding rail sliding seat, the number of the bag ear sliding rail, the bag ear sliding rail sliding seat and the bag ear sliding cylinder is more than one, and the bag ear sliding rail sliding seat is respectively connected with the upper shifting fork and the lower shifting fork; the bag ear pressing and folding driving mechanism comprises a bag ear driving motor and a bag ear driving belt; the bag ear driving motor is in transmission connection with the bag ear driving belt, and the bag ear driving belt is connected with the bag ear pressing and folding mechanism.

9. The folding and compressing structure suitable for different sizes of vest bags according to claim 1, wherein: the adjustable material receiving mechanism comprises a material receiving bottom plate, a material receiving limiting lifting platform, a material receiving pressing air cylinder, a material receiving sliding rail, a material receiving sliding block, a material receiving hand fixing plate, a lifting air cylinder, a material receiving sliding mechanism and a material receiving driving mechanism; the material receiving and pressing cylinders are located on two sides of the material receiving bottom plate, the material receiving limiting lifting platform is fixed in the middle of the material receiving bottom plate, the material receiving slide rail is arranged on the material receiving bottom plate, the material receiving hand is fixed on the material receiving hand fixing plate, the material receiving hand fixing plate is fixed on the material receiving slide block and connected with the material receiving and pressing cylinders, the lifting cylinders are connected with the material receiving limiting lifting platform, and the material receiving lifting cylinders are connected with the material receiving bottom plate; the material receiving driving mechanism is in transmission connection with the material receiving bottom plate; the material receiving limiting lifting platform is provided with a material receiving groove; the material receiving sliding mechanism comprises a sliding fixed seat, a sliding rod and a sliding linear bearing seat; the sliding linear bearing block is connected with the adjustable material receiving mechanism; the two ends of the sliding rod are respectively connected with a sliding fixing seat, the sliding fixing seats are respectively arranged on two sides of the fixing mechanism, and the sliding linear bearing seat is sleeved on the sliding rod.

10. The folding and compressing structure suitable for different sizes of vest bags according to claim 1, wherein: the adjustable tube positive plate mechanism comprises a tube positive plate, a tube positive fixing plate, a tube positive plate bottom plate, a tube positive plate slide rail, a tube positive plate slide block, a tube positive plate synchronous adjusting mechanism, a tube positive plate sliding mechanism and a tube positive plate driving mechanism; the tube positive plate synchronous adjusting mechanism and the tube positive plate slide rail are arranged on the tube positive plate bottom plate, the tube positive plate slide block is connected with the tube positive plate synchronous adjusting mechanism, the tube positive plate slide rail is connected with the tube positive plate slide block in a sliding manner, the tube positive plate is connected with the tube positive plate synchronous adjusting mechanism, and the tube positive fixing plate is connected with the tube positive plate slide block; the tube positive plate sliding mechanisms are arranged on two sides of the tube positive plate bottom plate; the tube positive plate driving mechanism is in transmission connection with the tube positive plate bottom plate; the structure of the pipe positive plate synchronous adjusting mechanism is completely the same as that of the pressing plate synchronous adjusting mechanism.