CN117775410A - Heat sealing welding head, sealing mechanism and bagging machine - Google Patents

Abstract

The invention discloses a heat-sealing welding head, a sealing mechanism and a bagging machine, wherein the heat-sealing welding head comprises a heat-sealing pressing strip, a movable connecting piece and an electric heating strip; the movable connecting piece is movably connected to the heat-sealing pressing strip along the length direction of the heat-sealing pressing strip; the electric heating strips are parallel to the length direction of the heat sealing pressing strips, one side surface of the heat sealing pressing strips is arranged, and at least one end of each electric heating strip is connected to the movable connecting piece. The heat sealing welding head, the sealing device and the bagging machine provided by the invention can effectively solve the problem of the quality defect of the sealing of the packaging bag caused by the thermal expansion deformation of the electric heating strip, thereby improving the yield of the packaged product.

Description

Heat sealing welding head, sealing mechanism and bagging machine

Technical Field

The invention relates to the technical field of packaging equipment, in particular to a heat sealing welding head, a sealing mechanism and a bagging machine.

Background

In a packaging line, when the material is filled into the packaging bag, the packaging bag is usually required to be sealed by a sealing mechanism; the sealing mechanism comprises a heat sealing welding head and is tightly pressed on the edge of the bag mouth of the packaging bag through the heat sealing welding head, so that the edges on the upper side and the lower side of the bag mouth can be in hot melting fit at high temperature, and further sealing is completed. In the related art, the heat sealing welding head comprises a heat sealing pressing strip and an electric heating strip, and the electric heating strip is fixedly connected to the bottom of the heat sealing pressing strip, so that the heat sealing welding head can be heated after the electric heating strip is electrified to perform heat fusion welding; however, because of the large difference between the thermal expansion coefficients of the electric heating strips and the thermal sealing pressing strips, the electric heating strips can be bent and deformed to a certain extent after being electrified, and the sealing quality is further affected.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides a heat sealing welding head which can effectively solve the problem of sealing quality defect caused by thermal expansion deformation of an electric heating strip.

The invention also provides a sealing mechanism with the heat sealing welding head and a bagging machine.

According to the embodiment of the first aspect of the invention, the heat sealing welding head comprises a heat sealing pressing bar, a movable connecting piece and an electric heating bar; the movable connecting piece is movably connected to the heat-sealing pressing strip along the length direction of the heat-sealing pressing strip; the electric heating strip is parallel to the length direction of the heat sealing pressing strip, one side surface of the heat sealing pressing strip is arranged, and at least one end of the electric heating strip is connected to the movable connecting piece.

The heat sealing welding head according to the embodiment of the first aspect of the invention has at least the following beneficial effects:

according to the heat sealing welding head, the movable connecting piece capable of moving along the length direction of the heat sealing pressing strip is arranged on the heat sealing pressing strip, at least one end of the electric heating strip, parallel to the length direction of the heat sealing pressing strip, is connected to the movable connecting piece, so that when the expansion lengths of the electric heating strip and the heat sealing pressing strip are inconsistent after the electric heating strip is electrified, the movable connecting piece can move on the heat sealing pressing strip along with the expansion length difference between the electric heating strip and the heat sealing pressing strip, and further the problem of sealing quality defects during sealing operation of a packaging bag is solved.

According to the heat sealing welding heads of some embodiments of the first aspect of the invention, two ends of the heat sealing pressing strip are movably connected with movable connecting pieces, and two ends of the electric heating strip are respectively connected with the two movable connecting pieces.

According to the heat sealing welding heads of some embodiments of the first aspect of the invention, the two ends of the heat sealing pressing strip are connected with the guide screw rods, and the movable connecting piece is movably sleeved on the guide screw rods.

According to some embodiments of the first aspect of the present invention, the heat sealing welding head further comprises an elastic member, wherein the elastic member connects the movable connecting member and the heat sealing bead, and is used for providing an elastic force for keeping the movable connecting member away from the heat sealing bead.

According to the first aspect of the invention, the heat sealing welding head further comprises a heat-resistant adhesive layer, wherein the heat-resistant adhesive layer covers one side of the electric heating strip, which is away from the heat sealing pressing strip, and the edge of the heat-resistant adhesive layer in the width direction is fixedly connected to the heat sealing pressing strip.

A sealing mechanism according to some embodiments of the second aspect of the present invention includes the heat sealing horn of the first aspect embodiment described above.

According to the sealing mechanism of the second aspect, at least the following beneficial effects are achieved:

the sealing mechanism of the embodiment adopts the heat sealing welding head of the first embodiment, so that the problem of sealing quality defect caused by thermal expansion deformation of the electric heating strips can be effectively solved when the packaging bag is sealed.

A bagging machine according to some embodiments of the third aspect of the present invention includes the sealing mechanism of the second aspect embodiment described above.

The bagging machine according to some embodiments of the third aspect of the invention has at least the following advantages:

because the bagging machine of this embodiment adopts the sealing mechanism of the above-mentioned second aspect embodiment, consequently when carrying out the packing operation to the wrapping bag, can effectively improve the wrapping bag quality defect problem that seals that brings because of the electric heat strip thermal expansion warp, and then promote the yields of packing product.

According to some embodiments of the second aspect of the present invention, the sealing mechanism further comprises an upper welding assembly and a lower welding assembly, the lower welding assembly comprises a welding bead, the upper welding assembly comprises a heat sealing welding head and a welding driver, the welding bead is arranged opposite to the heat sealing welding head, and the welding driver is in driving connection with the heat sealing bead and is used for driving the heat sealing welding head to lift so as to be close to or far away from the welding bead.

The bagging machine according to some embodiments of the second aspect of the present invention further comprises a bag opening mechanism, wherein the bag opening mechanism is arranged at one side of the sealing mechanism, and comprises an upper bag opening module and a lower bag opening module, the upper bag opening module comprises an upper adsorption assembly, a bag opening upper compression assembly and a bag opening upper driver, and the lower bag opening module comprises a lower adsorption assembly, a bag opening lower compression assembly and a bag opening lower driver; the upper adsorption component and the lower adsorption component are oppositely arranged and are respectively used for adsorbing the upper bag mouth edge and the lower bag mouth edge of the packaging bag; the upper bag opening driver is connected with the upper adsorption assembly to drive the upper adsorption assembly to lift between a first initial position at the upper side and a first adsorption position at the lower side; the upper compressing assembly of the bag mouth comprises a first swing stretching cylinder and a first compressing strip, the first compressing strip is connected to the top end of the first swing stretching cylinder, and when the upper absorbing assembly is at the upper initial position, the first compressing strip can stretch out and swing to the lower side of the upper absorbing assembly or retract and swing to one side of the upper absorbing assembly, which is far away from the sealing mechanism, under the driving of the first swing stretching cylinder; the lower bag opening driver is connected with the lower adsorption assembly to drive the lower adsorption assembly to lift between a second adsorption position on the upper side and a second initial position on the lower side; the bag mouth lower compression assembly comprises a second swing extending cylinder and a second compression strip, the second compression strip is connected to the lower end of the second swing extending cylinder, and when the lower adsorption assembly is located at a second initial position of the lower side, the second compression strip can extend out of the upper side of the lower adsorption assembly under the driving of the second swing extending cylinder or retract and swing to one side of the lower adsorption assembly deviating from the sealing mechanism.

The bagging machine according to some embodiments of the second aspect of the present invention further comprises an upper lifting driving module and a lower lifting driving module, wherein the upper welding assembly and the upper bag opening module are connected to the upper lifting driving module and can lift under the driving of the upper lifting driving module, and the lower welding assembly and the lower bag opening module are connected to the lower lifting driving module and can lift under the driving of the lower lifting driving module.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic view of a heat seal bonding tool according to one embodiment of the present invention;

FIG. 2 is an enlarged partial view of the area indicated by A in FIG. 1;

FIG. 3 is a schematic view showing a connection structure among a sealing mechanism, a bag opening mechanism, an upper lifting driving module and a lower lifting driving module of a bag loader according to an embodiment of the present invention;

FIG. 4 is a schematic view of the structure of FIG. 3 from another perspective;

FIG. 5 is a schematic view of the upper weld assembly shown in FIG. 3;

FIG. 6 is a schematic view of the lower weld assembly shown in FIG. 3;

FIG. 7 is a schematic view of the upper bag opening module shown in FIG. 3;

fig. 8 is a schematic view of the structure of the lower bag opening module shown in fig. 3.

Reference numerals:

a heat seal bonding tool 100; a heat seal bead 110; a movable connecting member 120; a guide hole 121; an electric heating strip 130; a first connection hole 131; a lead screw 140; an elastic member 150; a heat-resistant adhesive layer 160; tabletting 170; a second connection hole 171; a sealing mechanism 1000; an upper welding assembly 1100; a welding driver 1110; a lower welding assembly 1200; welding the batten 1210; a bag opening mechanism 2000; an upper bag opening module 2100; an upper adsorption assembly 2110; a compression assembly 2120 on the pocket; a first swing cylinder 2121; a first compression bar 2122; an open bag upper drive 2130; a lower bag opening module 2200; a lower adsorbent assembly 2210; a pocket lower compression assembly 2220; a second swing cylinder 2221; a second compression bar 2222; a bag opening lower driver 2230; an upper lift driving module 3100; lower lifting drive module 3200.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

In the description of the present invention, it should be understood that the direction or positional relationship indicated with respect to the description of the orientation, such as up, down, left, right, front, rear, etc., is based on the direction or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, and does not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, the description of the first and second is only for the purpose of distinguishing technical features, and should not be construed as indicating or implying relative importance or implying the number of technical features indicated or the precedence of the technical features indicated.

In the description of the present invention, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

A heat-seal bonding tool 100 according to a first aspect of the present invention is described below with reference to fig. 1 and 2.

Referring to fig. 1 and 2, a heat-seal bonding tool 100 according to some embodiments of the present invention includes a heat-seal bead 110, a movable connector 120, and an electric heat bar 130; wherein the heat-seal pressing bar 110 is arranged in a strip shape and is used for being connected to a welding driver 1110 in the sealing mechanism 1000 so as to drive the whole heat-seal welding head 100 to press towards the bag mouth of the packaging bag together under the driving of the welding driver 1110 when the packaging bag is subjected to the heat-seal of the bag mouth; the movable connection piece 120 is movably connected to the heat-seal pressing bar 110 along the length direction of the heat-seal pressing bar 110, the electric heating bar 130 is arranged on one side surface of the heat-seal pressing bar 110 in a manner of being parallel to the heat-seal pressing bar 110, and at least one end of the electric heating bar 130 is connected to the movable connection piece 120; the electric heating strip 130 is a heating element of the heat sealing horn 100 and is capable of rapidly heating up in an energized state so that the package bag mouth in contact with the heat sealing horn 100 can be heat sealed at a high temperature.

It should be appreciated that, in the heat sealing welding head 100 of this embodiment, by providing the movable connecting piece 120 capable of moving along the length direction of the heat sealing bead 110 on the heat sealing bead 110 and connecting at least one end of the electric heating strip 130 parallel to the heat sealing bead 110 to the movable connecting piece 120, when the expansion lengths of the electric heating strip 130 and the heat sealing bead 110 are inconsistent after the electric heating strip 130 is powered on, the movable connecting piece 120 can follow the expansion length difference between the electric heating strip 130 and the heat sealing bead 110 and move on the heat sealing bead 110, so as to avoid bending deformation of the electric heating strip 130 and further improve the problem of sealing quality defect during the sealing operation of the packaging bag.

It can be appreciated that in one embodiment, referring to fig. 1 and 2, two ends of the heat sealing pressing bar 110 are movably connected with the movable connecting pieces 120, and two ends of the electric heating bar 130 are respectively connected with the two movable connecting pieces 120; after the electric heating strip 130 expands under heating, both ends of the electric heating strip 130 expand and stretch, so that by arranging two movable connecting pieces 120 and connecting both ends of the electric heating strip 130 to the two movable connecting pieces 120 respectively, the electric heating strip 130 can be better adapted to the expansion under heating, and the relative displacement between each part of the electric heating strip 130 and the heat-sealing pressing strip 110 can be reduced.

It will be appreciated that, in order to facilitate the movable connection member 120 being movably connected to the heat seal molding 110, in some embodiments, referring to fig. 1 and 2, the two ends of the heat seal molding 110 are connected to the lead screw 140, the movable connection member 120 is provided with a guide hole 121 for being engaged with the rod portion of the lead screw 140, and is movably sleeved on the lead screw 140 through the guide hole 121, so that the movable connection member 120 can slide along the axial direction of the lead screw 140, and, since the head portion of the lead screw 140 protrudes from the rod portion in the radial direction, the detachment of the movable connection member 120 from the lead screw 140 can be restricted by the head portion of the lead screw 140.

It should be understood that, after the electric heating strip 130 expands under heating, due to the difference of expansion coefficients, a certain friction force is generated between the electric heating strip 130 and the heat sealing bead 110, and a certain friction force is also generated between the movable connecting piece 120 and the heat sealing bead 110, so as to avoid bending caused by that the electric heating strip 130 cannot normally stretch along the length direction thereof under the effect of the friction force, in one embodiment, referring to fig. 1 and 2, the heat sealing welding head 100 further includes an elastic piece 150, the elastic piece 150 connects the movable connecting piece 120 and the heat sealing bead 110, and is used for providing an elastic force for keeping the movable connecting piece 120 away from the heat sealing bead 110, and the elastic force of the elastic piece 150 is set to be always greater than the friction force between the movable connecting piece 120 and the heat sealing bead 110, so as to further ensure that the electric heating strip 130 can be always in a straightened and tensed state.

It can be appreciated that, in order to facilitate the fixed connection of the end of the electric heating strip 130 to the movable connector 120, in some embodiments, referring to fig. 1 and 2, the end of the electric heating strip 130 is provided with a first connecting hole 131 and is fixedly connected to the movable connector 120 by a fastener penetrating through the first connecting hole 131; it should be appreciated that in addition to fasteners being used to secure the heater strip 130 to the articulating member 120, in other embodiments, adhesives, welding, etc. may alternatively be used to attach to the articulating member 120.

It will be appreciated that, in order to make the electric heating strip 130 keep fit on one side surface of the heat seal bead 110 and expand relative to the heat seal bead 110, in some embodiments, referring to fig. 1 and 2, the heat seal bonding head 100 further includes a heat-resistant adhesive layer 160, where the heat-resistant adhesive layer 160 wraps one side of the electric heating strip 130 facing away from the heat seal bead 110, and the edge of the heat-resistant adhesive layer 160 in the width direction is fixedly connected to the heat seal bead 110, so that the electric heating strip 130 can keep fit on one side surface of the heat seal bead 110, and after the electric heating strip 130 expands due to the better elasticity and heat resistance of the heat-resistant adhesive layer 160, the heat-resistant adhesive layer 160 can follow the expansion of the electric heating strip 130 in the thickness direction of the electric heating strip 130, and avoid the excessive extrusion force given to the electric heating strip 130, so that the electric heating strip 130 can expand relative to the heat seal bead 110 in the length direction after being heated.

It should be appreciated that in one embodiment, the heat resistant glue layer 160 may alternatively be a teflon glue layer.

It should be understood that, in one embodiment, in order to facilitate the fixing of the widthwise edges of the heat-resistant adhesive layer 160 to the heat-seal molding 110, referring to fig. 1 and 2, the heat-resistant adhesive layer 160 is bent in a U-shape in its widthwise direction, and both widthwise sides of the heat-resistant adhesive layer 160 are adhered to both adjacent sides of the surface of the heat-seal molding 110 on which the electric heating bars 130 are provided; meanwhile, the heat sealing welding head 100 further comprises a pressing sheet 170, the pressing sheet 170 is fixedly connected to the two adjacent sides, and the edge of the heat-resistant adhesive layer 160 in the width direction is tightly pressed and fixed between the pressing sheet 170 and the heat sealing pressing strip 110; specifically, in order to mount the fixing presser plate 170, the presser plate 170 is provided with a second connection hole 171, and is fixedly connected to the heat-seal presser bar 110 by a fastener penetrating through the second connection hole 171.

The sealing mechanism 1000 according to the second aspect of the present invention is described below, and the sealing mechanism 1000 according to the present embodiment includes the heat sealing bonding tool 100 according to the first aspect. It should be appreciated that, since the sealing mechanism 1000 of the present embodiment employs the heat sealing welding head 100 of the first embodiment, the problem of the sealing quality defect caused by the thermal expansion deformation of the electric heating strip 130 can be effectively improved when the sealing operation is performed on the package bag.

The bagging machine according to the third aspect of the present invention includes the sealing mechanism 1000 according to the second aspect, wherein the sealing mechanism 1000 is used for sealing the packaging bag after the material is fed into the packaging bag; it should be appreciated that, since the bagging machine of the present embodiment adopts the sealing mechanism 1000 of the second embodiment, the problem of the quality defect of the sealing of the packaging bag caused by the thermal expansion deformation of the electric heating strip 130 can be effectively improved when the packaging bag is packaged, and the yield of the packaged product can be further improved.

It will be appreciated that in some embodiments of the present invention, referring to fig. 3 and 4, the sealing mechanism 1000 further includes an upper welding assembly 1100 and a lower welding assembly 1200; referring to fig. 5, an upper welding assembly 1100 includes a heat sealing welding head 100 according to the first embodiment and a welding driver 1110, referring to fig. 6, a lower welding assembly 1200 includes a welding bead 1210, and the welding bead 1210 is disposed opposite to the heat sealing welding head 100, and the welding driver 1110 is drivingly connected to the heat sealing bead 110 and is used for driving the heat sealing welding head 100 to lift so as to approach or separate from the welding bead 1210; when the package is sealed, the mouth of the package will be between the welding bead 1210 and the heat seal bead 100, and the welding bead 1210 can abut the lower mouth edge of the package, so that when the welding driver 1110 drives the heat seal bead 100 against the welding bead 1210, the heat seal bead 100 and the welding bead 1210 will be able to cooperate together to clamp the upper and lower mouth edges of the package mouth and to cause the upper and lower mouth edges to weld to each other at the high temperature of the heat seal bead 100.

It will be appreciated that in some embodiments of the present invention, the bagging machine further includes a bag opening mechanism 2000, wherein the bag opening mechanism 2000 is configured to complete opening of the bag so that the material to be packaged can be fed into the bag through the bag opening; specifically, referring to fig. 3 and 4, the bag opening mechanism 2000 is disposed at one side of the sealing mechanism 1000, and includes an upper bag opening module 2100 and a lower bag opening module 2200; also, referring to fig. 7, the upper bag opening module 2100 includes an upper suction assembly 2110, a bag mouth upper compression assembly 2120, and a bag opening upper driver 2130; referring to fig. 8, the lower bag-opening module 2200 is similar in structure to the upper bag-opening module 2100 and includes a lower adsorption assembly 2210, a lower mouth compression assembly 2220, and a lower bag-opening driver 2230; referring to fig. 3, 7 and 8, the upper and lower suction members 2110 and 2210 are oppositely disposed, and the opposite surfaces of the upper and lower suction members 2110 and 2210 are provided with suction cups for sucking the upper and lower pouch edges of the package bag, respectively; the upper bag opening driver 2130 is connected with the upper adsorption assembly 2110 and is used for driving the upper adsorption assembly 2110 to lift between a first initial position at the upper side and a first adsorption position at the lower side, so that when the upper bag opening driver 2130 drives the upper adsorption assembly 2110 to move to the first adsorption position at the lower side, the upper adsorption assembly 2110 can be attached to and adsorb the upper bag opening edge of the packaging bag, and when the upper bag opening driver 2130 drives the upper adsorption assembly 2110 to move to the first initial position at the upper side, the upper bag opening edge of the packaging bag can be driven to be opened upwards; the upper pressing assembly 2120 of the bag mouth is used for clamping the edge of the upper bag mouth by matching with the upper adsorption assembly 2110 after the edge of the upper bag mouth is opened upwards, so as to avoid the falling of the edge of the upper bag mouth from the upper adsorption assembly 2110 caused by the abutting and pulling of the material in the process of feeding the material into the packaging bag; specifically, the upper bag opening compression assembly 2120 includes a first swing cylinder 2121 and a first compression bar 2122, where the first compression bar 2122 is connected to the top end of the first swing cylinder 2121, and when the upper suction assembly 2110 moves to the first initial position on the upper side, the first compression bar 2122 can stretch out and swing under the upper suction assembly 2110 under the drive of the first swing cylinder 2121 to match and compress the edge of the upper bag opening, or retract and swing to the side of the upper suction assembly 2110 away from the sealing mechanism 1000, so as to avoid affecting the suction of the upper suction assembly 2110 on the edge of the upper bag opening; similarly, the lower bag opening driver 2230 is connected to the lower suction assembly 2210 and is used for driving the lower suction assembly 2210 to lift between the upper second suction position and the lower second initial position, so that the lower suction assembly 2210 can be attached to and suck the lower bag mouth edge of the packaging bag when the lower bag opening driver 2230 drives the lower suction assembly 2210 to move to the upper second suction position, and can drive the lower bag mouth edge of the packaging bag to be opened downwards when the lower bag opening driver 2230 drives the lower suction assembly 2210 to move to the lower second initial position; similarly, the lower packing assembly 2220 is configured to clamp the lower edge of the bag with the lower adsorption assembly 2210 after the lower edge of the bag is opened downward, so as to prevent the lower edge of the bag from falling off from the lower adsorption assembly 2210 due to the material being abutted and pulled during the process of feeding the material into the packaging bag; similarly, the lower bag opening compression assembly 2220 includes a second swing cylinder 2221 and a second compression bar 2222, the second compression bar 2222 is connected to the lower end of the second swing cylinder 2221, and when the lower adsorption assembly 2210 moves to the second initial position at the lower side, the second compression bar 2222 can stretch out and swing to the upper side of the lower adsorption assembly 2210 under the driving of the second swing cylinder 2221 to cooperate to compress the lower bag opening edge, or retract and swing to the side of the lower adsorption assembly 2210 facing away from the sealing mechanism 1000, so as to avoid affecting the adsorption of the lower adsorption assembly 2210 to the lower bag opening edge.

It will be appreciated that, in order to avoid the influence of the sealing mechanism 1000 on the bag opening operation of the packaging bag, in some embodiments of the present invention, referring to fig. 3 and 4, the bag loader further includes an upper lifting driving module 3100 and a lower lifting driving module 3200, wherein the upper welding assembly 1100 and the upper bag opening module 2100 are connected to the upper lifting driving module 3100 and can lift under the driving of the upper lifting driving module 3100, and the lower welding assembly 1200 and the lower bag opening module 2200 are connected to the lower lifting driving module 3200 and can lift under the driving of the lower lifting driving module 3200.

The bag opening and closing process of the bag loader will be described below with reference to fig. 3-8, wherein before the bag is opened, the mouth of the bag is between the upper suction assembly 2110 and the lower suction assembly 2210, and the tail of the bag is on the side of the sealing mechanism 1000 away from the bag mechanism 2000, where the upper suction assembly 2110 is driven to the first suction position on the lower side by the upper bag opening driver 2130, and the first hold-down bar 2122 is driven to retract and swing by the first swing cylinder 2121 to the side of the upper suction assembly 2110 facing away from the sealing mechanism 1000, similarly, where the lower suction assembly 2210 is driven to the second suction position on the upper side by the lower bag opening driver 2230, and the second hold-down bar 2222 is driven to retract and swing by the second swing cylinder 2221 to the side of the lower suction assembly 2210 facing away from the sealing mechanism 1000; then, the upper lifting driving module 3100 drives the upper welding assembly 1100 and the upper bag opening module 2100 to descend together, and the upper adsorption assembly 2110 is attached to and adsorbs the upper bag edge of the bag mouth of the packaging bag, and the lower adsorption assembly 2210 adsorbs the lower bag edge of the bag mouth of the packaging bag; then the upper bag opening driver 2130 drives the upper adsorption assembly 2110 to move to the first initial position on the upper side (for the package bag and the material with larger size, the upper adsorption assembly 2110 can be driven to move upwards together with the upper lifting driving module 3100 at this time), and the lower bag opening driver 2230 drives the lower adsorption assembly 2210 to move to the second initial position on the lower side, so that the edges of the upper and lower side bags of the package bag are opened to two sides respectively; then the first swing stretching cylinder 2121 drives the first compression bar 2122 to extend and swing to the lower side of the upper adsorption assembly 2110 so as to match the upper adsorption assembly 2110 to compress the upper bag edge of the bag opening, and the second swing stretching cylinder 2221 drives the second compression bar 2222 to extend and swing to the upper side of the lower adsorption assembly 2210 so as to match the lower adsorption assembly 2210 to compress the lower bag edge of the bag opening, so that the materials to be packaged can be fed into the packaging bag through a bagging feeding mechanism and other devices; after the packaging bag enters the packaging bag, the first compression bar 2122 is driven to retract and swing to one side, away from the sealing mechanism 1000, of the upper adsorption assembly 2110 through the first stretching and swinging cylinder 2121, the second compression bar 2222 is driven to retract and swing to one side, away from the sealing mechanism 1000, of the lower adsorption assembly 2210 through the second stretching and swinging cylinder 2221, and meanwhile the upper adsorption assembly 2110 loosens the upper bag edge of the bag mouth of the packaging bag, and the lower adsorption assembly 2210 loosens the lower bag edge of the bag mouth; then, the upper welding assembly 1100 is driven to move downwards by the upper lifting driving module 3100, the lower welding assembly 1200 is driven to move upwards by the lower lifting driving module 3200, and the heat sealing welding head 100 and the welding pressing strip 1210 are driven by the welding driver 1110 to press the upper bag edge and the lower bag edge of the bag mouth together, so that the heat sealing of the packaging bag can be realized.

It should be appreciated that to enhance the versatility of the bagging machine to accommodate more bagging operations with different sizes of bags and materials, in one embodiment, the upper and lower lift drive modules 3100 and 3200 are linear motor modules and the upper and lower bag opening drivers 2130, 2230 and welding drivers 1110 are drive cylinders.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A heat seal bonding tool comprising:

heat-sealing the pressing strip;

the movable connecting piece is movably connected to the heat-sealing pressing strip along the length direction of the heat-sealing pressing strip;

the electric heating strip is parallel to the length direction of the heat sealing pressing strip and arranged on one side surface of the heat sealing pressing strip, and at least one end of the electric heating strip is connected to the movable connecting piece.

2. The heat sealing welding head according to claim 1, wherein two ends of the heat sealing pressing strip are movably connected with movable connecting pieces, and two ends of the electric heating strip are respectively connected with the two movable connecting pieces.

3. The heat seal bonding tool according to claim 2, wherein two ends of the heat seal bead are connected with lead screws, and the movable connecting piece is movably sleeved on the lead screws.

4. The heat seal bonding tool of claim 2, further comprising an elastic member connecting the movable connector and the heat seal bead and adapted to provide an elastic force to move the movable connector away from the heat seal bead.

5. The heat seal bonding tool according to any one of claims 1 to 4, further comprising a heat resistant adhesive layer, wherein the heat resistant adhesive layer covers a side of the electric heating strip facing away from the heat seal bead, and a widthwise edge of the heat resistant adhesive layer is fixedly connected to the heat seal bead.

6. A sealing mechanism, comprising: a heat seal bonding tool according to any one of claims 1 to 5.

7. A bagging machine, comprising: the sealing mechanism of claim 6.

8. The bagging machine of claim 7, wherein the sealing mechanism further comprises an upper welding assembly and a lower welding assembly, the lower welding assembly comprises a welding bead, the upper welding assembly comprises the heat sealing welding head and a welding driver, the welding bead is opposite to the heat sealing welding head, and the welding driver is in driving connection with the heat sealing bead and is used for driving the heat sealing welding head to lift so as to be close to or far away from the welding bead.

9. The bagging machine of claim 8, further comprising a bag opening mechanism arranged on one side of the sealing mechanism and comprising an upper bag opening module and a lower bag opening module, wherein the upper bag opening module comprises an upper adsorption assembly, a bag opening upper pressing assembly and a bag opening upper driver, and the lower bag opening module comprises a lower adsorption assembly, a bag opening lower pressing assembly and a bag opening lower driver; the upper adsorption component and the lower adsorption component are oppositely arranged and are respectively used for adsorbing the upper bag mouth edge and the lower bag mouth edge of the packaging bag; the upper bag opening driver is connected with the upper adsorption assembly to drive the upper adsorption assembly to lift between a first initial position at the upper side and a first adsorption position at the lower side; the upper compressing assembly of the bag mouth comprises a first swing stretching cylinder and a first compressing strip, the first compressing strip is connected to the top end of the first swing stretching cylinder, and when the upper absorbing assembly is at a first initial position on the upper side, the first compressing strip can stretch out and swing to the lower side of the upper absorbing assembly or retract and swing to one side of the upper absorbing assembly, which is far away from the sealing mechanism, under the driving of the first swing stretching cylinder; the bag opening lower driver is connected with the lower adsorption component so as to drive the lower adsorption component to lift between a first adsorption position on the upper side and a second initial position on the lower side; the lower compressing assembly of the bag mouth comprises a second stretching and swinging cylinder and a second compressing strip, the second compressing strip is connected to the lower end of the second stretching and swinging cylinder, and when the lower absorbing assembly is at a second initial position of the lower side, the second compressing strip can stretch out and swing to the upper side of the lower absorbing assembly or retract and swing to one side of the lower absorbing assembly deviating from the sealing mechanism under the driving of the second stretching and swinging cylinder.

10. The bagging machine of claim 9, further comprising an upper lifting driving module and a lower lifting driving module, wherein the upper welding assembly and the upper bag opening module are connected to the upper lifting driving module and can lift under the driving of the upper lifting driving module, and the lower welding assembly and the lower bag opening module are connected to the lower lifting driving module and can lift under the driving of the lower lifting driving module.