CN114056675B

CN114056675B - Packaging machine and bag opening and heat sealing device thereof

Info

Publication number: CN114056675B
Application number: CN202111557205.6A
Authority: CN
Inventors: 黄英顺; 冯立志; 马宇轩; 张艺永; 邹兆峰; 雷剑凡; 刘东升
Original assignee: Zhuhai Ruixiang Intelligent Technology Co ltd
Current assignee: Zhuhai Ruixiang Intelligent Technology Co ltd
Priority date: 2021-12-18
Filing date: 2021-12-18
Publication date: 2023-06-06
Anticipated expiration: 2041-12-18
Also published as: CN114056675A

Abstract

The invention discloses a packaging machine and a bag opening and heat sealing device thereof. The bag opening and heat sealing device comprises a bag opening assembly and a heat sealing assembly, wherein the bag opening assembly comprises a first upper beam and a first lower beam which are mutually close to or far away from each other in the gravity direction, and negative pressure adsorption parts extending along the length direction of the first upper beam and the first lower beam are respectively arranged on the first upper beam and the first lower beam; the heat sealing assembly comprises a second upper cross beam and a second lower cross beam which are mutually close to or far away from each other in the gravity direction, and heat sealing pressing strips extending along the length direction of the second upper cross beam and the second lower cross beam are arranged on the second upper cross beam and the second lower cross beam; the first upper cross beam and the first lower cross beam are respectively provided with two pocket mouth action assemblies, the two pocket mouth action assemblies move in a mutually approaching or separating mode, and the pocket mouth action assemblies comprise movable pressing pieces which can extend into a feeding hole of a packaging bag and press the upper side edge and the lower side edge of the feeding hole on the negative pressure adsorption part. The invention can adjust the size of the feed inlet of the packaging bag according to the size of the product and realize the horizontal packaging of the product.

Description

Packaging machine and bag opening and heat sealing device thereof

Technical Field

The invention relates to a packaging machine and a bag opening and heat sealing device thereof.

Background

The automatic packaging machine of the prior art packages products by enabling the products to fall into the packaging bags downwards, and the products and the packaging bags are impacted in the packaging process. When packaging vulnerable articles such as electronic products, there is a defect that the products are vulnerable to impact during packaging.

Disclosure of Invention

The invention mainly aims to provide a packaging machine and a bag opening and heat sealing device thereof, wherein the bag opening and heat sealing device can open a feed opening of a packaging bag in a state that the packaging bag is kept horizontal, and can adjust the width of the feed opening at the same time so as to realize horizontal packaging of products with different sizes and effectively avoid the products from being impacted in the packaging process.

In order to achieve the above-mentioned main object, a first aspect of the present invention provides a bag opening and heat sealing apparatus of an automatic packaging machine, comprising:

the bag opening assembly comprises a first upper cross beam and a first lower cross beam, and the first upper cross beam and the first lower cross beam move in a way of approaching or separating from each other in the gravity direction; the first upper cross beam and the first lower cross beam are respectively provided with a negative pressure adsorption part extending along the length direction of the first upper cross beam and the first lower cross beam, and the negative pressure adsorption parts on the first upper cross beam and the first lower cross beam are oppositely arranged in the gravity direction;

the heat sealing assembly comprises a second upper cross beam and a second lower cross beam, and the second upper cross beam and the second lower cross beam move close to or far away from each other in the gravity direction; the heat sealing pressing strips extending along the length direction of the second upper cross beam and the second lower cross beam are arranged on the second upper cross beam and the second lower cross beam respectively, and the heat sealing pressing strips on the second upper cross beam and the second lower cross beam are oppositely arranged in the gravity direction;

wherein, the first upper beam and the first lower beam are respectively provided with two pocket mouth action components which move in a mode of approaching or separating from each other in the horizontal direction; the bag mouth action assembly comprises a movable pressing piece which can extend into a feed inlet of the packaging bag and press the upper side edge and the lower side edge of the feed inlet on the negative pressure adsorption part.

Among the above-mentioned technical scheme, open the pan feeding mouth of wrapping bag and adjust the pan feeding mouth height when first entablature and first bottom end rail keep away from each other in the direction of gravity, two sack effect components on first entablature and the first bottom end rail keep away from each other the pan feeding mouth width of adjustment wrapping bag in the horizontal direction to realize the horizontal packaging to different size products, avoid the product to receive the impact in the packaging process. Further, the movable pressing piece can be arranged to prevent the product from contacting the upper side edge and the lower side edge of the feeding port when the product enters the packaging bag, and the upper side edge and the lower side edge are prevented from scratching the product.

According to one embodiment of the invention, the first upper cross beam and/or the second upper cross beam is/are provided with a vacuumizing assembly positioned between the two pocket opening acting assemblies, and the vacuumizing assembly is provided with a vacuumizing part used for stretching into the packaging bag to vacuumize so as to realize vacuum packaging of products.

Further, sealing press strips extending along the length direction of the second upper cross beam and the second lower cross beam are arranged on the second upper cross beam and the second lower cross beam, and the sealing press strips on the second upper cross beam and the second lower cross beam are oppositely arranged in the gravity direction; the sealing pressing strip is positioned on one side of the heat sealing pressing strip away from the negative pressure adsorption part and is used for keeping the sealing state of the packaging bag in the vacuumizing and heat sealing processes, so that the vacuum packaging effect is improved.

According to one embodiment of the invention, the pocket-acting assembly further comprises a moving base, a driving connecting rod, a transmission connecting rod and a connecting rod driving device for driving the driving connecting rod to rotate; the two ends of the driving connecting rod and the transmission connecting rod are respectively hinged with the movable base and the movable pressing piece, and the hinging points at the two ends of the driving connecting rod and the hinging points at the two ends of the transmission connecting rod form a parallelogram structure.

In the bag opening process, the movable pressing piece can move between an initial position (at the moment, the movable pressing piece does not extend into the packaging bag) at the side of the negative pressure adsorption part, a pressing position for pressing the upper side edge and the lower side edge of the feeding port on the negative pressure adsorption part and a bag port width adjusting position for loosening the upper side edge and the lower side edge of the feeding port (at the moment, the movable pressing piece still extends into the packaging bag). When the width of the bag opening is adjusted, the movable pressing piece is loosened from the upper side edge and the lower side edge of the feeding opening, so that the bag opening can move horizontally conveniently.

Further, the middle part of the driving connecting rod is provided with a hinge point positioned outside the parallelogram structure, the connecting rod driving device is an air cylinder, the cylinder body of the air cylinder is hinged with the movable base, and the piston rod of the air cylinder is hinged with the hinge point positioned in the middle part of the driving connecting rod.

Further, a movable stop piece connected with a stop driving device is also arranged on the movable base, and the stop driving device can drive the movable stop piece to move to be abutted with the driving connecting rod. Specifically, when the movable pressing piece is required to be controlled to move to a bag opening width adjusting position for loosening the upper side edge and the lower side edge of the feeding opening, the movable stopping piece moves to a stopping position of the movable pressing piece, and the movable stopping piece is abutted with the driving connecting rod at the stopping position so as to rotationally position the driving connecting rod.

Further, the first upper cross beam and the first lower cross beam are provided with a first bidirectional screw rod and a first motor, wherein the first bidirectional screw rod and the first motor are arranged along the length direction of the first bidirectional screw rod; the movable bases of the two pocket-opening acting assemblies are respectively connected with two different thread sections of the first bidirectional screw rod, so that the two pocket-opening acting assemblies move in a mutually approaching or separating mode.

According to one embodiment of the invention, the first upper and lower cross members are respectively connected to two different threaded sections of a second bidirectional screw rod, which is driven to rotate by a second motor, so that the first upper and lower cross members are moved closer to or farther from each other in the direction of gravity.

According to one embodiment of the invention, the second upper cross beam and the second lower cross beam are respectively connected with two different threaded sections of a third bidirectional screw rod, and the third bidirectional screw rod is driven to rotate by a third motor, so that the second upper cross beam and the second lower cross beam are close to or far from each other in the gravity direction.

A second aspect of the present invention provides a packaging machine having a bag opening and heat sealing apparatus as described above to achieve horizontal packaging of products of different sizes and to effectively avoid the products being impacted during the packaging process.

The objects, technical solutions and advantages of the present invention will be more clearly described below, and the present invention will be further described in detail with reference to the accompanying drawings and the detailed description.

Drawings

FIG. 1 is a first block diagram of an embodiment of an automatic packing machine of the present invention;

FIG. 2 is a second block diagram of an embodiment of an automatic packing machine of the present invention;

FIG. 3 is a block diagram of a packing bag feeding apparatus in the embodiment;

FIG. 4 is a cross-sectional view of a package feeding device in an embodiment;

FIG. 5 is a block diagram of a packing bag buffer conveyor in an embodiment;

FIG. 6 is a block diagram of a packing bag gripping and conveying apparatus according to an embodiment;

FIG. 7 is a first block diagram of the bag opening and heat sealing apparatus of the embodiment;

FIG. 8 is a second construction view of the bag opening and heat sealing apparatus of the embodiment;

FIG. 9 is a third block diagram of the bag opening and heat sealing apparatus in the embodiment, showing an initial state of the bag opening assembly;

FIG. 10 is a fourth construction view of the bag opening and heat sealing apparatus of the embodiment, showing the state where the bag opening assembly opens the bag filler;

FIG. 11 is a perspective view of a pocket-acting assembly according to an embodiment;

FIG. 12 is a block diagram of the movable compression member of the pocket-acting assembly in an initial position;

FIG. 13 is a block diagram of the movable compression member of the pocket-acting assembly in a compressed position;

FIG. 14 is a block diagram of the movable compression member of the pocket actuation assembly in the pocket width adjustment position;

FIG. 15 is a top view of the product bagging apparatus of the embodiment;

FIG. 16 is a block diagram of a product bagging apparatus according to an embodiment;

FIG. 17 is a block diagram of a desiccant bagging apparatus according to an embodiment;

FIG. 18 is a block diagram of a finished package blanking apparatus in an embodiment;

fig. 19 is a block diagram of an auxiliary feeding device for a packing bag in an embodiment.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the invention, but the invention may be practiced with other variations or alternatives based upon the teachings. Therefore, other embodiments that may be known to those skilled in the art based on the examples described herein fall within the scope of the present invention.

Referring to fig. 1-2, the packaging machine of the embodiment is a horizontal bag feeding type automatic packaging machine, and includes a packaging bag feeding device 10, a packaging bag clamping and conveying device 20, a liftable packaging loading table 30, a bag opening and heat sealing device 40, and a product bag loading device 50; wherein, the package feeding device 10 is used for forming continuous package coil (for example, aluminum plastic package coil) into a single package with a feed opening, the package clamping and conveying device 20 horizontally places the package on the package carrier 30, the opening and heat sealing device 40 opens the feed opening of the package and heat seals the feed opening, and the product feeding device 50 horizontally feeds the product to be packaged into the package.

As shown in fig. 3 and 4, the bag feeding apparatus 10 includes a bag feeding roller 11, a first roller conveying assembly 12, a second roller conveying assembly 13, and a bag forming assembly 14, the bag forming assembly 14 being disposed between the first roller conveying assembly 12 and the second roller conveying assembly 13. Wherein, but be equipped with horizontal migration's feeding regulating roller 15 between wrapping bag feed roller 11 and the first roller conveying assembly 12, during the feed, control feeding regulating roller 15 moves the preset distance back to the initial position again from initial position to the direction of keeping away from first roller conveying assembly 12 for wrapping bag coil stock gets into first roller conveying assembly 12 in the lax state. The feeding adjustment roller 15 can be driven by an air cylinder to move horizontally, but the invention is not limited thereto.

The feeding side of the first roller conveying assembly 12 is provided with two packaging bag limiting pieces 16, the two packaging bag limiting pieces 16 are oppositely arranged to be respectively abutted against two opposite sides of the packaging bag coil stock, and in the conveying process, the two opposite sides of the packaging bag coil stock are abutted against the packaging bag limiting pieces 16 to be limited in the width direction, so that the packaging bag coil stock is prevented from being sent to deviate during conveying. Further, a plurality of bag stoppers 16 for restricting the sides of the bags may be provided between the first roller conveyor 12 and the second roller conveyor 13.

The package forming assembly 14 includes a package cutting mechanism and a heat sealing mechanism for cutting the package web into individual packages. In an alternative embodiment, the package cutting mechanism includes an upper cutter 141 and a lower cutter 142 disposed opposite each other, the heat sealing mechanism includes an upper heat sealing bead 143 and a lower heat sealing bead 144 disposed opposite each other, the lower cutter 142 and the lower heat sealing bead 144 are fixedly disposed, and the upper cutter 141 and the upper heat sealing bead 143 are mounted on a lifting beam 145. The two ends of the lifting beam 145 are connected with a screw rod lifting mechanism 146, and when the screw rod lifting mechanism 146 drives the lifting beam 145 to move downwards, the cutting of the packaging bag and the heat sealing of the opening of the tail end (relative to the end of the feeding port of the packaging bag) of the packaging bag are realized.

Further, the package feeding device 10 may further include two opposite fillet cutting mechanisms 17, where the fillet cutting mechanisms 17 are used for cutting fillets at corners of the package. A fillet cutting mechanism 17 may be disposed between the first conveyor assembly 12 and the package forming assembly 14.

As shown in fig. 2, the packing machine according to the embodiment may further include a packing bag buffer conveyor 80 disposed between the holding conveyor 20 and the packing bag feeding device, and after the packing bag formed by the packing bag feeding device 10 is fed to the packing bag buffer conveyor 80, the packing bag is placed on the packing stage 30 by the holding conveyor 20. As shown in fig. 5, the package bag buffer conveyor 80 includes a conveyor roller 81 for conveying the package bag and two sets of positioning guide posts 82 disposed opposite to each other, and the two sets of positioning guide posts 82 abut against two opposite sides of the package bag, respectively, so as to guide the conveyance of the package bag. Wherein, the two groups of limit guide posts 82 are arranged in a mode of approaching or separating from each other.

As shown in fig. 6, the package holding and conveying device 20 includes two holding mechanisms 21, an X-axis module 22, a Y-axis module 23, and a Z-axis module 24, which are disposed opposite to each other, and the holding mechanisms 21 are mounted on the Y-axis module 23 and are movable in a manner to be moved toward and away from each other by being driven by the Y-axis module 23. In the process of clamping and conveying, two clamping mechanisms 21 respectively clamp two horizontal side edges of the front end (refer to one end positioned at a packaging bag feeding port) of the packaging bag, and the packaging bag is placed on a packaging carrying platform 30 under the driving of an X-axis module and a Z-axis module. In addition, before the feeding port of the heat-sealing packaging bag, the Y-axis module 23 controls the two clamping mechanisms 21 to be far away from each other so as to pull the two opposite sides of the front end of the packaging bag in the horizontal direction, so that the upper side and the lower side of the feeding port of the packaging bag are kept in a flat state, and the reliability of heat sealing of the feeding port is improved.

As shown in fig. 7-10, the bag opening and heat sealing apparatus 40 includes a bag opening assembly 41 and a heat sealing assembly 42. Wherein, the bag opening assembly 41 includes an upper cross member 411 and a lower cross member 412, and the upper cross member 411 and the lower cross member 412 move in a manner approaching or moving away from each other in a gravitational direction. In an alternative embodiment, the upper beam 411 and the lower beam 412 are driven to move up and down by a screw lifting mechanism, the screw lifting mechanism includes two bidirectional screws 415 and a motor 416, the two bidirectional screws 415 are respectively disposed at two opposite ends of the upper beam 411 and the lower beam 412, and the upper beam 411 and the lower beam 412 are respectively connected with two different threaded sections of the bidirectional screws 415, the motor 416 drives the two bidirectional screws 415 to synchronously rotate through a belt transmission mechanism 417, and the bidirectional screws 415 rotate to enable the upper beam 411 and the lower beam 412 to approach or separate from each other in the gravity direction.

The upper cross beam 411 and the lower cross beam 412 are respectively provided with a negative pressure adsorption part 413 extending along the length direction, and the negative pressure adsorption parts 413 on the upper cross beam 411 and the lower cross beam 412 are oppositely arranged in the gravity direction; the surface of the negative pressure suction part 413 may be a plane, and the plane may have a plurality of negative pressure holes spaced along the length direction thereof. When the packaging bag clamping and conveying device 20 places the packaging bag at a preset position on the packaging carrying platform 30, a feeding port of the packaging bag just enters between the upper cross beam 411 and the lower cross beam 412, the upper side edge and the lower side edge of the feeding port are respectively adsorbed by the negative pressure adsorption parts 413 on the upper cross beam 411 and the lower cross beam 412, and the upper cross beam 411 and the lower cross beam 412 are far away from each other, so that the feeding port is opened. Further, the upper beam 411 is provided with a vacuumizing assembly 43, and the vacuumizing assembly 43 is provided with a vacuumizing part 431 for extending into the packaging bag to vacuumize; after the evacuation is completed, the suction portion 431 may be retracted from the package. In other embodiments of the invention, the vacuum assembly 43 may also be disposed on the lower beam 412.

Two pocket mouth action components 414 are respectively arranged on the upper cross beam 411 and the lower cross beam 412, and the two pocket mouth action components 414 are arranged on two sides of the vacuumizing component 43 and move in a mode of approaching or separating from each other in the horizontal direction, so that the width of a feed inlet of a packaging bag is adjusted, and the upper side edge and the lower side edge of the feed inlet of the packaging bag are in a flat state. In an alternative embodiment, the upper beam 411 and the lower beam 412 have a bidirectional screw 418 disposed along the length direction thereof and a motor (not visible in the figure) for driving the bidirectional screw 418 to rotate; the moving bases 4142 of the two pocket-acting assemblies 414 are respectively connected to two different threaded sections of the bi-directional screw 418, and rotation of the bi-directional screw 418 will cause the two pocket-acting assemblies 414 to move toward or away from each other.

In an alternative embodiment, as shown in FIG. 11, the pocket-acting assembly 414 includes a movable hold-down member 4141, a movable base 4142, a drive link 4144, a transmission link 4143, and a cylinder 4145 as an example of a link drive. Wherein, both ends of the driving link 4144 and the transmission link 4243 are hinged with the moving base 4142 and the movable pressing member 4141, respectively, and the hinge points of both ends of the driving link 4144 and the hinge points of both ends of the transmission link 4143 form a parallelogram structure. The driving link 4144 has a substantially V-shaped structure, the middle portion of which has a hinge point located at the outer portion of the parallelogram structure, the piston rod of the cylinder 4145 is hinged to the hinge point located at the middle portion of the driving link 4144, and the cylinder body of the cylinder 4145 is hinged to the moving base 4142.

After the inlet of the packing bag is opened, the cylinder 4145 drives the driving link 4144 to rotate, so that the movable pressing member 4141 moves from the initial position shown in fig. 12 to the pressing position shown in fig. 13 to extend into the inlet of the packing bag and press the upper and lower sides of the inlet against the negative pressure suction portion 413. Further, as shown in fig. 14, when the width of the inlet is adjusted, the cylinder 4145 drives the driving link 4144 to rotate a certain angle, so that the movable pressing member 4141 is properly released from the upper and lower sides of the inlet (when the movable pressing member 4141 still extends into the package), so as to facilitate the movement of the bag mouth action assembly 414.

Preferably, the moving base 4142 is further provided with a movable stopper 4147 and a cylinder 4146 as an example of a stopper driving device, and the cylinder 4146 is used for driving the movable stopper 4147 to move to a stopper position abutting against the driving link 4144. Specifically, as shown in fig. 14, when it is desired to control the movable pressing member 4141 to move to the pocket width adjustment position for releasing the upper and lower sides of the inlet, the movable stopper 4147 is moved to its stopping position, where the movable stopper 4147 abuts against the driving link 4144 to rotationally position the driving link 4144, so that the movable pressing member 4141 is accurately positioned at the pocket width adjustment position as shown in fig. 14.

The bag opening operation can be performed according to the following steps: first, as shown in fig. 9, two pocket-acting assemblies 414 are moved close to each other while the upper and

lower beams

411 and 412 are moved close to each other to have a gap for the front end of the packing bag to enter; the pack loading table 30 is raised to a predetermined height and the pack holding and conveying device 20 places the pack on the pack loading table 30 at a predetermined position where the front end of the pack is just entered into the gap between the upper cross member 411 and the lower cross member 412. Then, the negative pressure adsorption part 413 adsorbs the upper and lower sides of the feed opening of the packing bag, and the upper cross beam 411 and the lower cross beam 412 are slightly apart, so that the feed opening of the packing bag is opened; the cylinder 4145 drives the movable pressing member 4141 to extend into the package bag and press the upper and lower sides of the inlet against the negative pressure suction portion 413. Then, the negative pressure of the negative pressure suction part 413 is turned off, and the upper cross member 411 and the lower cross member 412 are moved away from each other to a predetermined distance to adjust the height of the feed port. Finally, the movable pressing member 4141 is moved to the bag width adjusting position shown in fig. 14, and the two bag opening action assemblies 414 are moved away from each other to adjust the width of the bag inlet, and finally the bag opening assembly 41 is in the state shown in fig. 10.

In other embodiments of the present invention, the two pocket-acting assemblies 414 may be controlled to be away from each other to adjust the width of the inlet, and then the upper beam 411 and the lower beam 412 may be controlled to be away from each other to adjust the height of the inlet.

Referring to fig. 8, the heat seal assembly 42 includes an upper beam 422 and a lower beam 421, the upper beam 422 and the lower beam 421 moving toward or away from each other in the direction of gravity; in an alternative embodiment, the upper beam 422 and the lower beam 421 are driven to move up and down by a screw elevating mechanism comprising two bidirectional screws 425 and a motor 426, the two bidirectional screws 425 are respectively disposed at two opposite ends of the upper beam 422 and the lower beam 421, and the upper beam 422 and the lower beam 421 are respectively connected with two different threaded sections of the bidirectional screws 425, the motor 426 drives the two bidirectional screws 425 to synchronously rotate through a belt transmission mechanism 427, and the bidirectional screws 425 rotate to enable the upper beam 422 and the lower beam 421 to approach or separate from each other in the gravity direction.

The upper beam 422 and the lower beam 421 are respectively provided with a heat-sealing depression bar 423 extending along the length direction thereof, and the heat-sealing depression bars 423 on the upper beam 422 and the lower beam 421 are oppositely arranged in the gravity direction. Further, the upper beam 422 and the lower beam 421 are provided with sealing beads 424 extending along the length direction thereof, and the sealing beads 424 on the upper beam 422 and the lower beam 421 are oppositely arranged in the gravity direction; the sealing bead 424 is located at a side of the sealing bead 423 remote from the negative pressure suction portion 413 for maintaining a sealed state of the package during the vacuuming and heat-sealing processes.

After the product is put into the bag, the upper beam 422 and the lower beam 421 are close to each other, and the sealing pressing strips 424 on the upper beam 422 and the lower beam 421 press the feed inlet of the packaging bag so as to facilitate vacuumizing operation; after the vacuumizing is completed, the heat sealing pressing strips 423 on the upper beam 422 and the lower beam 421 heat-seal the feeding port. Before the vacuumizing and the heat sealing operation of the feeding port are performed, the Y-axis module 23 of the packaging bag clamping and conveying assembly 20 controls the two clamping mechanisms 21 to be far away from each other, so that two opposite sides of the front end of the packaging bag are pulled in the horizontal direction, the flatness of the upper side edge and the lower side edge of the feeding port is improved, and the heat sealing quality of the feeding port is ensured.

As shown in fig. 15 and 16, the product bagging apparatus 50 includes a lifting bracket 51, a conveying roller 52 provided on the lifting bracket 51, two sets of limit posts 55, and two sets of carrying rollers 53 as an example of a product carrier. Wherein, the lifting bracket 51 is connected with the lifting driving mechanism to adjust the height of the product bagging device 50 so as to lead the product to be packaged to be aligned with the feeding port of the packaging bag; the two groups of limit guide posts 55 are oppositely arranged and respectively abutted against two opposite sides of the product so as to push and guide the product. Further, the product bagging apparatus 50 further includes a product pushing mechanism 54 disposed between the two sets of carrying rollers 53, the product pushing mechanism 54 being configured to push the product on the carrying rollers 53 into the packaging bag.

Specifically, as shown in fig. 16, the product pushing mechanism 54 includes a pushing base 541, and the pushing base 541 is connected to a driving device such as a rodless cylinder and moves back and forth in the product bagging direction M; the pushing base 541 is provided with a product pushing member 542 and a lifting cylinder 543, and the product pushing member 542 can be driven by the lifting cylinder 543 to move up and down. When the product to be packaged is conveyed to the bearing roller 53 by the conveying roller 52 during the bagging operation, the pushing base 541 moves to a position close to the conveying roller 52, meanwhile, the lifting cylinder 543 drives the product pushing member 542 to protrude above the bearing roller 53, and then the pushing base 541 moves towards the downstream direction of the bagging direction M, so that the product can be horizontally pushed into the packaging bag.

With continued reference to fig. 1-2, a desiccant supply 60 and a desiccant bagging device 70 are positioned above the product bagging device 50, with the desiccant bagging device 70 positioned below the desiccant supply 60. Wherein the desiccant supply device 60 cuts the continuous bagged desiccant into individual bagged desiccant, and the cut bagged desiccant is pushed into the package by the desiccant bagging device 70. The mechanism of the desiccant supply device 60 may be the same as that of the prior art, and will not be described again.

As shown in fig. 17, the desiccant bagging apparatus 70 includes a bracket 71 having a desiccant guide 711 and a desiccant pusher 72 provided in the desiccant guide 711, the desiccant pusher 72 being connectable to a driving means such as a cylinder to move back and forth. Wherein the bracket 71 is provided on the elevating base 73 and can be moved back and forth in the product bagging direction so that the cut bagged drying agent can accurately fall into the drying agent guide slot 711, and the bagged drying agent falling into the drying agent guide slot 711 is pushed into the packaging bag by the drying agent pushing member 72. The height of the lifting base 73 is adjustable to facilitate alignment of the desiccant channels 711 with the package inlet.

As shown in fig. 1, the automatic packing machine of the embodiment may further include a finished package discharging device 100 for removing the finished packages from the package tray 30. In an alternative embodiment, as shown in fig. 18, the pack product discharging apparatus 100 includes a negative pressure suction portion 101 for sucking up the pack product, the negative pressure suction portion 101 being provided so as to be movable in space in the X-axis, Y-axis, and Z-axis.

Further, the automatic packaging machine of the embodiment may further include a label printing device 90 disposed above the packaging bag buffer conveyor 80, and the label printing device 90 is configured to generate product labels. The product label generated by the label printing apparatus 90 can be sucked by the negative pressure suction portion 101 and stuck to the packaged product.

Further, as shown in fig. 1, the automatic packaging machine of the embodiment may further include a packaging bag auxiliary feeding device 120. As shown in fig. 19, the auxiliary feeding device 120 for packaging bags comprises a bearing base 121 provided with casters 125 and a lifting bracket 122, wherein a lifting driving mechanism 123 is arranged on the bearing base 121, the lifting driving mechanism 123 can be a scissor type lifting driving mechanism, two rotatable supporting roller shafts 124 are arranged on the lifting bracket 122, and packaging bag coiled materials can be borne on the supporting roller shafts 124. When the packaging bag is fed, the height of the lifting support 122 can be adjusted through the lifting driving mechanism 123 so as to facilitate the installation of the packaging bag coil on the packaging bag feeding roller 111.

Further, as shown in fig. 1, the packaging machine of the embodiment may further include a product bundling device 110 for bundling products to be packaged, where the product bundling device 110 includes a conveying mechanism 1101 that interfaces with the product bagging device 50 to convey the bundled products to be packaged onto the product bagging device 50. The structure of the product strapping device 110 can be the same as in the prior art, and will not be described in detail.

While the invention has been described in terms of embodiments, these embodiments are not intended to limit the scope of the invention. It is intended that all such modifications and variations as would be included within the scope of the invention are within the scope of the invention as defined by the appended claims.

Claims

1. A bag opening and heat sealing apparatus for a packaging machine, comprising:

the bag opening assembly comprises a first upper cross beam and a first lower cross beam, and the first upper cross beam and the first lower cross beam move close to or away from each other in the gravity direction; the first upper cross beam and the first lower cross beam are respectively provided with a negative pressure adsorption part extending along the length direction of the first upper cross beam and the first lower cross beam, and the negative pressure adsorption parts on the first upper cross beam and the first lower cross beam are oppositely arranged in the gravity direction;

the heat sealing assembly comprises a second upper cross beam and a second lower cross beam, and the second upper cross beam and the second lower cross beam move close to or away from each other in the gravity direction; the second upper cross beam and the second lower cross beam are respectively provided with a heat-sealing pressing strip extending along the length direction of the second upper cross beam and the second lower cross beam, and the heat-sealing pressing strips on the second upper cross beam and the second lower cross beam are oppositely arranged in the gravity direction;

the first upper cross beam and the first lower cross beam are respectively provided with two pocket opening acting components, and the two pocket opening acting components move in a mode of approaching or separating from each other in the horizontal direction; the bag opening action assembly comprises a movable pressing piece which can extend into a material inlet of the packaging bag and press the upper side edge and the lower side edge of the material inlet on the negative pressure adsorption part;

the bag mouth action assembly further comprises a movable base, a driving connecting rod, a transmission connecting rod and a connecting rod driving device, wherein the connecting rod driving device is used for driving the driving connecting rod to rotate; the two ends of the driving connecting rod and the two ends of the transmission connecting rod are respectively hinged with the movable base and the movable pressing piece, and the hinge points of the two ends of the driving connecting rod and the hinge points of the two ends of the transmission connecting rod form a parallelogram structure.

2. The bag opening and heat sealing apparatus according to claim 1, wherein the first upper cross member and/or the first lower cross member is provided with a vacuum-pumping assembly between the two bag opening action assemblies, the vacuum-pumping assembly having a suction portion for extending into the package bag to perform vacuum pumping.

3. The bag opening and heat sealing device according to claim 2, wherein the second upper cross beam and the second lower cross beam are provided with sealing beads extending along the length direction of the second upper cross beam and the second lower cross beam, and the sealing beads on the second upper cross beam and the second lower cross beam are oppositely arranged in the gravity direction; the sealing depression bar is positioned at one side of the heat sealing depression bar far away from the negative pressure adsorption part.

4. The bag opening and heat sealing device according to claim 1, wherein the middle part of the driving connecting rod is provided with a hinge point positioned outside the parallelogram structure, the connecting rod driving device is a cylinder, the cylinder body of the cylinder is hinged with the movable base, and the piston rod of the cylinder is hinged with the hinge point positioned in the middle part of the driving connecting rod.

5. The bag opening and heat sealing device according to claim 1, wherein the movable base is further provided with a movable stopper connected with a stopper driving device capable of driving the movable stopper to move to abut against the driving link.

6. The bag opening and heat sealing apparatus according to claim 1, wherein the first upper cross member and the first lower cross member are provided with a first bidirectional screw rod provided along a length direction thereof and a first motor for driving the first bidirectional screw rod to rotate; the movable bases of the two pocket-opening acting assemblies are respectively connected with two different thread sections of the first bidirectional screw rod, so that the two pocket-opening acting assemblies move in a mutually approaching or separating mode.

7. The bag opening and heat sealing apparatus according to claim 1, wherein the first upper beam and the first lower beam are respectively connected with two different threaded sections of a second bidirectional screw rod driven to rotate by a second motor so that the first upper beam and the first lower beam are moved toward or away from each other in a gravitational direction.

8. The bag opening and heat sealing apparatus according to claim 1, wherein the second upper beam and the second lower beam are respectively connected with two different threaded sections of a third bidirectional screw rod driven to rotate by a third motor so that the second upper beam and the second lower beam are moved closer to or farther from each other in a gravitational direction.

9. A packaging machine comprising a bag opening and heat sealing device according to any one of claims 1 to 8.