CN216943823U

CN216943823U - Bag feeding and packaging machine

Info

Publication number: CN216943823U
Application number: CN202121580321.5U
Authority: CN
Inventors: 罗邦毅; 汪雷春; 庄谦
Original assignee: Hangzhou Youngsun Intelligent Equipment Co Ltd
Current assignee: Hangzhou Youngsun Intelligent Equipment Co Ltd
Priority date: 2021-05-28
Filing date: 2021-07-13
Publication date: 2022-07-12
Anticipated expiration: 2031-07-13
Also published as: CN215753341U; CN115402584A; CN215753374U; CN216916517U; CN115402593A; CN216581349U; CN216916521U; CN216581324U

Abstract

The utility model provides a bag feeding and packaging machine which comprises a machine frame, a bag storage and separation mechanism, a zipper opening mechanism, a bag opening mechanism, a filling mechanism, a primary sealing mechanism, a secondary sealing mechanism and a discharging mechanism. The station comprises a bag taking and conveying station, a zipper bag opening station, a detection station, a bag opening bottom station, a filling station, a primary sealing station and a secondary sealing station which are sequentially arranged along the circumferential direction.

Description

Bag feeding and packaging machine

Technical Field

The utility model relates to the field of filling and packaging, in particular to a bag feeding and packaging machine.

Background

Various bags, boxes, sleeves, envelopes and the like made of paper, aluminum foil, fibers, plastic films and composites of the paper, the aluminum foil, the fibers, the plastic films and the composites belong to soft bag packages, and a filling machine taking the bags as a packaging container is provided with a plurality of groups of bag clamping mechanisms which do circular motion.

Conventionally, the distance between the left and right bag clamps in the bag clamping mechanism is adjusted by a mechanical control mechanism provided in the movement path of the bag clamping mechanism. When the distance between the bag clamps needs to be adjusted or the time for opening the bag clamps needs to be changed when changing the specification or some specified stations, the bag clamps cannot be adjusted randomly, the disassembly is troublesome, and the adaptability is poor.

Conventionally, a mechanical self-clamping mechanism is used as a clamp in a bag clamping mechanism, a bag is always clamped by the pressure of a spring, a mechanical control mechanism is arranged on a circulating motion path of the bag clamping mechanism, and when the clamp is opened at a specified station, the bag clamp is pushed open by the mechanical control mechanism at the position. The prior filling machine generally controls the opening of the bag clamp only at a bag inlet station and a bag outlet station by a mechanical control structure at the corresponding stations, and cannot set a bag clamp opening control structure at the bag opening, filling and sealing stations. Therefore, bags which are not opened or filled cannot be removed in the conveying process, and only flow out of the bag outlet station according to the process, and are manually picked out after the bag outlet station, so that the inspection workload and the risk of mixing of the non-packaged bags into finished products are increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a bag feeding and packaging machine. The technical scheme adopted by the utility model is as follows:

a bag feeding and packaging machine comprises a rack, a circulating bag feeding device and a power device for driving the circulating bag feeding device to rotate, wherein a plurality of bag clamping mechanisms are distributed on the circulating bag feeding device along the circulating movement direction, and are conveyed by the circulating mechanism to circularly pass through a plurality of stations required by a bag taking and feeding station, a sealing station and a bag taking and feeding station or a bag taking and feeding station, a discharging station and a bag taking and feeding station; the bag clamping mechanism is characterized by comprising a left bag clamp assembly, a right bag clamp assembly and a bag clamp adjusting mechanism, wherein the left bag clamp assembly and the right bag clamp assembly are connected with the bag clamp adjusting mechanism; the power device of the bag clamp assembly and the bag clamp assembly are driven by the bag clamp adjusting mechanism to move together, and the bag clamps in the bag clamp assembly are controlled to be opened and closed independently.

On the basis of the technical scheme, the utility model can also adopt the following further technical schemes or combine the further technical schemes for use:

the power device of the bag clamp adjusting mechanism adopts a motor, and the power device of the bag clamp assembly adopts an air cylinder; the air cylinders of the bag clamping assembly are communicated with the control valves through connecting pipes, each group of bag clamping mechanisms is correspondingly provided with one control valve, each air cylinder control valve is connected to the switching device through a connecting pipe, and the switching device is fixedly installed at the upper end of the main shaft of the circulating mechanism, coaxial with the main shaft and rotates along with the main shaft.

And a control piece is arranged at the position where the bag clamp needs to be opened, the control piece is driven by power to control the opening time, and the control piece is matched with the cylinder control valve to carry out on-off control.

The bag clamp adjusting mechanism is provided with a mounting frame, the mounting frame is connected with the circulating mechanism, and the control valve is arranged on the back face of the mounting frame.

And the mounting part of the control part is fixed on the upper end surface of the outer shaft.

The main shaft passes through the bearing and is connected with outer hub rotation, outer hub fixed connection in the frame, and the lead wire of every group bag presss from both sides adjustment mechanism's power device penetrates from the main shaft centre bore, and the pin connection sets up in the electrically conductive mechanism of main shaft bottom, electrically conductive mechanism adopts the electrically conductive mode of contact.

The power device of the bag clamp adjusting mechanism adopts a motor, and the power device of the bag clamp assembly adopts a cylinder; the air cylinder of the bag clamping assembly is communicated with the control valve through a connecting pipe, each group of bag clamping mechanisms is correspondingly provided with one control valve, the circulating bag conveying mechanism is provided with a rotary controller, the rotary controller is arranged on a main shaft of the circulating mechanism, and the rotary controller is in signal connection with the controller of the control valve.

Press from both sides bag mechanism and include bag clamp subassembly, mount pad, the bag clamp subassembly sets up first clamp bag spare and second and presss from both sides bag spare, presss from both sides bag spare by first clamp bag spare and second and combines into the bag clamp, the bag clamp subassembly still sets up power unit and protection installed part, protection installed part and mount pad fixed connection, first press from both sides bag spare with power unit connects, by power unit drives first clamp bag spare independently and does to open and the closed action.

In the bag clamp assembly, the power mechanism is arranged in the protective mounting piece.

The protective mounting piece extends out of the front of the mounting seat in an arm shape; the protective mounting is a tubular member; a power mechanism in the bag clamp assembly adopts a cylinder or an electric cylinder and is connected with the first bag clamping piece through a movable connecting piece.

The power mechanism is arranged in the protective installation piece, and the cross section sizes of the power mechanism and the movable connecting piece are smaller than the inner cross section size of the protective installation piece and can slightly rotate in the protective installation piece.

The second bag clamping piece is fixed at the end part of the protective mounting piece, and the first bag clamping piece is arranged on the outer side of the second bag clamping piece and is hinged and mounted.

The second bag clamping piece is fixed at the end part of the protective mounting piece, the first bag clamping piece is arranged at the outer side of the second bag clamping piece and is hinged, and the movable connecting piece is movably connected with the first bag clamping piece; and a power mechanism in the bag clamp assembly is movably connected with a connecting structure in the mounting hole of the mounting seat, or movably connected with the rear end of the protective mounting piece, or mounted behind the mounting seat.

The movable connection is a rotary connection.

The movable connecting piece comprises a first movable connecting piece and a second movable connecting piece; the rear end of the first movable connecting piece is connected with the extension rod of the power mechanism, the front end of the first movable connecting piece is rotatably connected with the rear end of the second movable connecting piece, and the front end of the second movable connecting piece is movably connected with the first bag clamping piece.

The first bag clamping piece and the second bag clamping piece are clamping blocks; first bag spare of pressing from both sides is rotated through the round pin axle and is connected in the second bag spare of pressing from both sides, and the second presss from both sides bag spare and is fixed in the front end of protection installed part through the mounting hole.

The bag clamping mechanism is provided with a left bag clamping assembly, a right bag clamping assembly, a left mounting seat, a right mounting seat, a horizontal linear adjusting mechanism and a horizontal linear guide mechanism, the horizontal linear adjusting mechanism is provided with a power mechanism of the adjusting mechanism, and the left mounting seat and the right mounting seat are respectively provided with the left bag clamping assembly and the right bag clamping assembly; the left mounting seat, the right mounting seat and the horizontal linear adjusting structure are connected and can be driven by a power mechanism of the adjusting mechanism to independently adjust the distance between the left bag clamp assembly and the right bag clamp assembly.

The bag clamping mechanism comprises a bag clamping assembly and a mounting seat, wherein the bag clamping assembly is provided with a first bag clamping piece and a second bag clamping piece, and the first bag clamping piece and the second bag clamping piece are combined into a bag clamp; the bag clamp assembly is further provided with a power mechanism and one, two or more bag clamps, the one, two or more bag clamps are driven to synchronously rotate by taking the rotating shafts as fulcrums through the power mechanism, and the power mechanism independently drives the bag clamps to open and close.

The bag presss from both sides the subassembly and still sets up the protection installed part, power unit sets up the rack driving medium, the rack driving medium sets up in the protection installed part, protection installed part and mount pad fixed connection, first bag spare and the second of pressing from both sides is pressed from both sides the bag spare and is installed on the protection installed part, the bag clamp that first bag spare and the second of pressing from both sides bag spare combination passes through the gear and is connected with the rack driving medium.

The protection installed part is that the arm form stretches out in the place ahead of mount pad, the rack drive spare sets up along the length direction of protection installed part, a plurality of sacks press from both sides and arrange along the length direction of protection installed part.

The first bag clamping piece and the second bag clamping piece are respectively provided with a gear, the gear of the first bag clamping piece is meshed with the rack transmission piece, and the gear of the second bag clamping piece is meshed with the gear of the first bag clamping piece.

The pocket clip assembly is provided with a structure for preventing the rack transmission member from rotating, wherein the rotation means that the rack transmission member rotates in parallel with the axis of the rack.

The structure for preventing rotation of the rack transmission member includes: the side of rack drive spare sets up rather than parallel and the direction setting element that links together, the protection installed part sets up the direction locating hole with direction setting element complex, the rack drive spare also sets up the direction position, the protection installed part still sets up the guiding hole that supplies rack drive spare to insert and lead the position direction to it.

The protective installation part is formed by connecting an upper assembly and a lower assembly, the lower assembly is used for installing the first bag clamping piece and the second bag clamping piece, and the upper assembly is provided with a hole for allowing a shaft of the first bag clamping piece and a shaft of the second bag clamping piece to pass through; the gear is arranged in an inner cavity formed by combining the upper assembly and the lower assembly.

The rack transmission part is provided with a plurality of sections of racks, and each section of rack corresponds to one bag clamp.

The first bag clamping piece and the second bag clamping piece both adopt clamping blocks.

The bag clamp comprises a left bag clamp assembly, a right bag clamp assembly, a left mounting seat, a right mounting seat, a horizontal linear adjusting mechanism and a horizontal linear guide mechanism, wherein the horizontal linear adjusting mechanism is provided with a power mechanism of the adjusting mechanism, and the left mounting seat and the right mounting seat are respectively provided with the left bag clamp assembly and the right bag clamp assembly; left side mount pad, right mount pad with horizontal straight line is adjusted the structural connection, and can be by adjustment mechanism's power unit drive, does not rely on cam mechanism, independently adjusts the interval between the two sets of bag clamp subassemblies about.

The bag clamp adjusting mechanism comprises a left mounting seat, a right mounting seat, a horizontal linear adjusting mechanism and a horizontal linear guide mechanism, the horizontal linear adjusting mechanism is provided with a power mechanism, and the left mounting seat and the right mounting seat are respectively provided with a left bag clamp assembly and a right bag clamp assembly; the left mounting seat, the right mounting seat and the horizontal linear adjusting structure are connected and can be driven by the power mechanism to independently adjust the distance between the left bag clamp assembly and the right bag clamp assembly.

Horizontal straight line adjustment mechanism includes the lead screw that the level set up, revolves to opposite left internal thread spare and right internal thread spare, and the lead screw revolves to opposite threaded rod for controlling and corresponds with left internal thread spare and right internal thread spare respectively and be connected, left side internal thread spare, right internal thread spare set up respectively on left mount pad, right mount pad, and left mount pad and right mount pad can synchronous reverse motion.

Horizontal straight line adjustment mechanism includes that two of level setting revolve to opposite lead screw, revolve to opposite left internal thread spare and right internal thread spare, and left side internal thread spare corresponds with right internal thread spare and revolves to opposite two lead screws and connect respectively, left side internal thread spare, right internal thread spare set up respectively on left mount pad, right mount pad, and left mount pad and right mount pad can synchronous reverse motion.

The horizontal linear adjusting mechanism is a structure with a matched gear and a rack.

Set up left horizontal rack and right horizontal rack in the horizontal straight line is adjusted the structure, the gear meshes and drives left horizontal rack and the synchronous reverse motion of right horizontal rack with left horizontal rack and right horizontal rack, left side mount pad and right mount pad set up respectively left side horizontal rack and right horizontal rack, left side mount pad and right mount pad can synchronous reverse motion.

Horizontal straight line guiding mechanism includes left slider and guide rail, right slider and guide rail, left side mount pad, right mount pad are connected with left slider and right slider respectively, the guide rail is fixed on the mounting bracket.

The horizontal linear guide mechanism comprises a left sliding bearing and a guide rod thereof, a right sliding bearing and a guide rod thereof, the left mounting seat and the right mounting seat are respectively connected with the left sliding bearing and the right sliding bearing, and the guide rod is fixed on the mounting frame.

The bag clamp components arranged on the left mounting seat and the right mounting seat are provided with single-station bag clamps, or two-station or more-station bag clamps which are arranged in a front-back mode.

The mounting frame of the bag clamp adjusting mechanism is fixed on a steering wheel of the bag feeding and packaging machine; the left bag clamp assembly and the right bag clamp assembly are respectively provided with a driving mechanism which is controlled independently so as to independently drive the bag clamps in the bag clamp assembly, and the driving mechanisms in the left bag clamp assembly and the right bag clamp assembly are respectively arranged on the left mounting seat and the right mounting seat and respectively move along with the left mounting seat and the right mounting seat.

The bag opening and closing mechanism is characterized in that a working mechanism for opening a bag bottom function is arranged at a detection station or a bag opening station or a detection and bag opening station, the working mechanism comprises a fixed support, a lifting support and a lifting power mechanism for driving the lifting support to do lifting motion, and a bag opening mechanism, the bag opening mechanism is provided with a structure for opening a bag bottom piece and opening a bag wall, and the bag opening mechanism is arranged on the lifting support.

The descending height of the bag supporting bottom mechanism is uniformly determined by a lifting power mechanism according to a set descending stroke.

Prop the bag end spare and set up and strut the position, the structure of strutting the bag wall includes strut the position and strut actuating mechanism and elastic resetting mechanism, it drives to strut the bag end spare and open, struts the bag wall through strutting the position.

Prop bag end spare and include that left and right prop bag end spare, a left side, right prop bag end spare and rotationally install on lifting support, prop actuating mechanism and install lifting support is last, it sets up the actuating lever to prop actuating mechanism, the actuating lever sets up the kicking block, and a left side, right prop bag end spare and set up respectively with kicking block complex position, by the effect when the kicking block descends, make a left side, right prop bag end spare and rotate and open.

The strutting driving mechanism is arranged on the lifting bracket in a way of adjusting the installation height, and the connecting rod passes through the lifting bracket and is connected with the ejector block at the bottom.

The bag opening detection mechanism comprises a bag opening detection mechanism and a bag opening detection mechanism, wherein the bag opening detection mechanism comprises a left bag opening bottom piece and a right bag opening bottom piece, the lower ends of the left bag opening bottom piece and the right bag opening bottom piece are inclined to form a cone in a matched mode, the cone is used as a functional part for pushing the bag bottom, a cavity is formed between swing arm parts of the left bag opening bottom piece and the right bag opening bottom piece, and a detection piece installation connecting part of the bag opening detection mechanism is arranged in the cavity; and two ends of an elastic element of the elastic resetting mechanism are respectively connected with the left and right bag supporting bottom pieces.

And the lifting support is also provided with a bag opening detection mechanism for detecting whether the bag opening is opened or not.

The bag opening detection mechanism comprises a detection piece mounting frame, a sensor support and an elastic detection part, wherein the lower end of the elastic detection part is mounted on the detection piece mounting frame, the detection piece support is mounted on a lifting support, and the sensor support is mounted on the lifting support; the upper portion of elasticity detecting element cooperates with the inductor of installing on the inductor support, elasticity detecting element sets up the detection site with sack complex, elasticity detecting element can the pressurized and elastic deformation.

The elastic detection part comprises a left detection part and a right detection part, and the lower parts of the detection part mounting frame and the elastic detection part are positioned in a cavity between the left bag opening bottom piece and the right bag opening bottom piece in the bag opening bottom mechanism; the upper parts of the left detection part and the right detection part are cantilever-shaped, and pass through the via holes on the left bag bottom piece and the right bag bottom piece in a free state, and the parts of the left detection part and the right detection part, which pass through the outer sides of the left bag bottom piece and the right bag bottom piece, are used as detection parts.

The detection part adopts an elastic sheet, and the detection part of the detection part is in a bevel edge shape which inclines upwards and outwards; the sensor and the sensor bracket are arranged at the outer sides of the tops of the left and right bag supporting bottom pieces, and a limiting part at the upper end of the elastic detection part is also arranged on the sensor and the sensor bracket.

By adopting the technical scheme of the utility model, the distance of the bag clamp can be independently adjusted, the opening time of the bag clamp can be independently controlled, various different functions and flexible arrangement are provided for the bag packaging machine, the control of various operation steps of the whole machine is convenient, unqualified bags are removed, and the bag conveying and filling work can be finished with high quality and high reliability.

Drawings

FIG. 1 is one of the overall schematic views of the bag-feeding and packaging machine of the present invention, with stations also shown.

Fig. 2 is a second overall schematic view of the bag-feeding and packaging machine of the present invention, showing the stations.

Fig. 3 is a top view of the bag feeding and packaging machine of the present invention.

FIG. 4 is a flow chart of the packaging method of the present invention.

Fig. 5 is a schematic view of a bag-feeding and packaging machine to which the circulating mechanism of the present invention is applied.

Fig. 6 is a schematic view of fig. 5 with the steering wheel cover hidden.

Figure 7 is a schematic view of another embodiment of the present invention employing a bag clamp assembly.

Fig. 8 is a side view of the embodiment of fig. 5.

Fig. 9 is a top view of the embodiment of fig. 5.

Fig. 10 is a sectional view B-B of fig. 9.

Fig. 11 is a schematic view of the bag opening detecting and bag bottom opening mechanism of the bag feeding and packaging machine according to the present invention.

Fig. 12 is a second schematic diagram of the bag opening detecting and bag bottom opening mechanism of the bag feeding and packaging machine of the present invention.

Fig. 13 is a schematic diagram of a bag opening structure of the bag opening detection and bag opening bottom mechanism.

Fig. 14 is a schematic view of a detection structure of the bag opening detection and bag bottom opening mechanism.

Fig. 15 is an exploded view of the bag opening detection and bag bottom opening mechanism.

Fig. 16 is a schematic view of an adjustable bag clamp mechanism of the present invention.

Fig. 17 is a schematic view of another embodiment of an adjustable bag clamp mechanism of the present invention.

Fig. 18 is an exploded view of the structure of fig. 16.

Fig. 19 is an exploded view of the structure of fig. 17.

Fig. 20 is a schematic view of an embodiment of the adjustable bag clamp mechanism of the present invention to fit 2 bags.

Fig. 21 is an exploded view of an embodiment of the adjustable bag clamp mechanism of the present invention to fit 2 bags.

Fig. 22 is a schematic view of another embodiment of an adjustable bag clamp mechanism of the present invention.

Figure 23 is an exploded view of embodiment 1 of the bag clamp assembly of the present invention.

Fig. 24 is a schematic structural diagram of embodiment 1 of the present invention.

Fig. 25 is a second schematic structural diagram of embodiment 1 of the present invention.

Fig. 26 is a schematic structural view of a pouch clip assembly of embodiment 2 of the present invention.

Fig. 27 is an exploded view of embodiment 2 of the present invention.

Fig. 28 is one of the schematic views of an embodiment of the utility model fitting 2 bags.

Fig. 29 is a second schematic view of the embodiment of the utility model adapted to 2 bags.

Fig. 30 is a third schematic view of an embodiment of the utility model fitting 2 bags.

Fig. 31 is an exploded view of one embodiment of the utility model fitting 2 bags.

Fig. 32 is an exploded view of a second embodiment of the utility model fitted with 2 bags.

Fig. 33 is a schematic view of an embodiment of the utility model fitting 1 bag.

Detailed Description

Reference is made to the accompanying drawings. The bag feeding and packaging machine provided by the utility model comprises a rack 700, a circulating bag feeding device and a power device for driving a circulating mechanism to rotate.

In this embodiment, the circulating mechanism in the circulating bag conveying device performs a circular motion, and each station is arranged along the circumferential direction. The circulating mechanism comprises a main shaft 600, a steering wheel 300 and a turntable power 301 for driving the steering wheel to rotate, a plurality of groups of bag clamping mechanisms are circumferentially distributed on the steering wheel 300, and a cover plate 302 is mounted on the steering wheel 300.

The bag clamping mechanism is conveyed by the circulating mechanism to circularly pass through a plurality of stations required by the bag taking and conveying station, the discharging station and the bag taking and conveying station.

The bag clamping mechanism comprises a bag clamp assembly and a mounting seat, wherein the bag clamp assembly is provided with a left group and a right group, the left group and the right group are respectively marked with 101 and 102, and correspondingly, the mounting seat is provided with a left mounting seat 11 and a right mounting seat 12 which are respectively provided with the left bag clamp assembly 101 and the right bag clamp assembly 102. The two sets of bag clamp assemblies have the same structure, and one of them is taken as an example for detailed description.

The bag clamp assembly is provided with a first bag clamping piece 51 and a second bag clamping piece 52, the first bag clamping piece 51 and the second bag clamping piece 52 are combined to form a bag clamp, the bag clamp assembly is further provided with a power mechanism and a protection installation piece 6, the power mechanism is arranged in the protection installation piece 6, the protection installation piece 6 is fixedly connected with the installation seat (the left installation seat 11 or the right installation seat 12 according to the position), the first bag clamping piece 51 is connected with the power mechanism, and the power mechanism is used for independently driving the first bag clamping piece 51 to open and close according to needs so as to open or close the bag clamp.

The protective mounting piece 6 is a tubular part, can be a circular hollow pipe, can also be a square hollow pipe or other shapes, the protective mounting piece 6 extends out of the front of the mounting seat in an arm shape, and the rear end of the protective mounting piece is mounted in a mounting hole 10 of the mounting seat; the power mechanism adopts a cylinder 50 or an electric cylinder and is connected with the first bag clamping piece 51 through a movable connecting piece, the cross section sizes of the power mechanism and the movable connecting piece are smaller than the internal cross section size of the protective mounting piece 6 and can slightly rotate in the protective mounting piece, the slight rotation can be matched with the transverse change of the connecting position of the first bag clamping piece 51 and the movable connecting piece when the first bag clamping piece is opened, and the mechanism can run more smoothly in a simpler mode.

In this embodiment, the second bag clamping member 52 functions as a bag clamping mounting seat, the second bag clamping member 52 includes an open mounting hole 520, a connecting portion 521 is disposed at the opening, the mounting hole 520 is sleeved on the end portion of the tubular protective mounting member 6, and the connecting portion 521 is fixed by a pin and a bolt (or a pin and a snap spring, a bolt, a nut, etc.) and the bag clamping portion of the second bag clamping member 52 may be a clamping block 522 and provided with a clamping block pad, and a flexible bag is clamped, the first bag clamping member 51 is disposed on the outer side of the second bag clamping member 52 and is hinged to the second bag clamping member 52, specifically, the mounting portion of the first bag clamping member 51 and the connecting portion of the second bag clamping member 52 may be hinged by the pin. The bag clamping part of the first bag clamping piece 51 also adopts a clamping block and is provided with a pad. The second bag member may also be formed integrally with the protective mounting member 6.

The movable connecting piece is rotationally connected with the first bag clamping piece 51; the power mechanism is movably connected with the connecting structure in the mounting hole 10 of the mounting seat. Fig. 23 shows a power mechanism mounting mode, wherein a connecting lug plate 13 is arranged in a mounting hole 10, and the tail part of the power mechanism is connected with the connecting lug plate through a pin shaft. Fig. 27 shows an alternative embodiment of the power mechanism, which is connected to a connecting sleeve, which is pivotally connected to the rear of the tubular shield mounting element 6 by means of a pin.

The movable connecting piece comprises a first movable connecting piece 53 and a second movable connecting piece 54, both the first movable connecting piece 53 and the second movable connecting piece 54 can adopt connecting rods, the rear end of the first movable connecting piece 53 is fixedly connected with an extension rod 55 of the power mechanism, the front end of the first movable connecting piece is rotatably connected with the rear end of the second movable connecting piece 54, the front end of the second movable connecting piece 54 extends out of the front end of the tubular protective installing piece 6 and is rotatably connected with a connecting hole 56 on the first bag clamping piece 51 through a pin shaft. The rotational connection between the first movable connecting member 53 and the second movable connecting member 54 may also be a joint bearing or a universal joint structure. As mentioned above, the power mechanism 50 can slightly rotate, so that the movable connecting member can slightly bend at the joint of the first movable connecting member 53 and the second movable connecting member 54 when moving in the length direction of the bag clamping assembly under the pushing action of the extension rod 55, and the bending angle is adapted to the opening included angle between the first bag clamping member 51 and the second bag clamping member 52.

The bag clamping mechanism is also provided with a horizontal linear adjusting mechanism and a horizontal linear guide mechanism, and the horizontal linear adjusting mechanism is provided with a power mechanism 20 of the adjusting mechanism; the left mounting seat 11, the right mounting seat 12 and the horizontal linear adjusting structure are connected and can be driven by a power mechanism of the adjusting mechanism to independently adjust the distance between the left bag clamp assembly and the right bag clamp assembly.

The mounting frame 4 of the bag clamp adjusting mechanism is fixed on a steering wheel 300 of the bag feeding and packaging machine. Reference numeral 201 is a clamped bag. Reference numeral 5 is a control mechanism for a cylinder 50, which is mounted on the back of the mounting 4.

The bag presss from both sides adjustment mechanism includes left mount pad 11, right mount pad 12, horizontal straight line adjustment mechanism and horizontal straight line guiding mechanism, and horizontal straight line adjustment mechanism is provided with power unit, and power unit can be motor, cylinder or electric jar etc. this embodiment is motor 20. The left mounting seat 11 and the right mounting seat 12 are respectively provided with a left bag clamp assembly 101 and a right bag clamp assembly 102; left side mount pad 11, right mount pad 12 with the structure connection is adjusted to the level straight line, and can by power unit drive, according to the demand, the interval between left bag clamp subassembly and the right bag clamp subassembly is independently adjusted to any position on wrapping bag transfer route, and need not adjust mechanical control mechanism's position and shape.

As shown in fig. 16 and 18, the horizontal linear adjusting mechanism may be a structure in which a motor drives a screw rod to move, and drives the nut sleeves at two ends to move away from and close to each other, so as to adjust the distance between the bag clamps, and includes a horizontally arranged screw rod, a left nut sleeve 21 and a right nut sleeve 22 with opposite rotation directions, the screw rod is correspondingly connected with the left nut sleeve 21 and the right nut sleeve 22 for threaded

rods

23 and 24 with opposite rotation directions, the left nut sleeve 21 and the right nut sleeve 22 are respectively arranged on the left mounting base 11 and the right mounting base 12, and the left mounting base 11 and the right mounting base 12 can synchronously move in opposite directions. Corresponding threaded holes can be directly formed in the left mounting seat 11 and the right mounting seat 12, and the screw rod is directly in threaded connection with the left mounting seat 11 and the right mounting seat 12.

As shown in fig. 17 and 19, if a double-head motor is used, the screw rod can also be formed by combining two horizontally arranged screw rods with opposite rotation directions, and the two

screw rods

23b and 24b with opposite rotation directions and corresponding to the left nut sleeve and the right nut sleeve are respectively connected. The double-end motor is respectively connected with two screw rods by a coupling device which can be a coupling 28. The same reference numerals as in fig. 1 and 3 denote the same meanings in fig. 2 and 4.

As shown in fig. 22, the horizontal linear adjusting mechanism may also be a structure in which a gear and a rack are engaged, and the following structure may be adopted: set up left horizontal rack 25 and right horizontal rack 26 in the horizontal straight line regulation structure, gear 27 is connected with the motor, gear 27 and left horizontal rack 25 and the meshing of right horizontal rack 26 and the synchronous reverse motion of drive left horizontal rack 25 and right horizontal rack 26, left side mount pad 11 and right mount pad 12 set up respectively left horizontal rack 25 and right horizontal rack 26, the synchronous reverse motion of left side mount pad 11 and right mount pad 12.

Horizontal straight line guiding mechanism includes left slider 31 and its guide rail 33, right slider 32 and guide rail 34, left side mount pad 11, right mount pad 12 are connected with left slider 31 and right slider 32 respectively,

guide rail

33, 34 are fixed on mounting bracket 4. Correspondingly, the power mechanism of the horizontal linear adjusting mechanism, the screw rod mounting rack of the adjusting mechanism and the like can also be arranged on the mounting rack 4.

The horizontal linear guide mechanism can also adopt a structure of a sliding bearing and a sliding rod, and comprises a left sliding bearing and a guide rod thereof, a right sliding bearing and a guide rod thereof, wherein the left mounting seat and the right mounting seat are respectively connected with the left sliding bearing and the right sliding bearing, and the guide rod is fixed on the mounting frame.

The bag clamp assemblies mounted on the left mounting seat 11 and the right mounting seat 12 are single-station bag clamps (as shown in fig. 16, 17, 18 and 19), or bag clamps with two stations (as shown in fig. 20 and 21) or more stations arranged in front and back. In fig. 20 and 21, the same reference numerals as in fig. 16, 18, 17, and 19 denote the same meanings.

The left bag clamp assembly 101 and the right bag clamp assembly 102 are respectively provided with a driving mechanism which is controlled independently so as to independently drive the bag clamps in the bag clamp assembly, the driving mechanisms in the left bag clamp assembly 101 and the right bag clamp assembly 102 are respectively installed on the left installation seat 11 and the right installation seat 12 and respectively move together with the left installation seat 11 and the right installation seat 12, and the bag clamps in the left bag clamp assembly 101 and the right bag clamp assembly 102 can be driven to open and close at any interval.

Referring to fig. 29-33, a bag clamping mechanism is further illustrated below

The bag clamp assembly is provided with a first bag clamping piece 51 and a second bag clamping piece 52, the first bag clamping piece 51 and the second bag clamping piece 52 are combined into a bag clamp, and the first bag clamping piece 51 and the second bag clamping piece 52 are both provided with clamping blocks and flexible clamping block pads for clamping bags. The bag clamp assembly is further provided with a power mechanism 70 and a plurality of bag clamps, the power mechanism 70 drives the bag clamps to synchronously rotate by taking respective rotating shafts as fulcrums, and the power mechanism 70 independently drives the bag clamps to open and close. The power mechanisms of the left bag clamp assembly 101 and the right bag clamp assembly 102 are respectively arranged on the back surfaces of the mounting

seats

11 and 12, the power mechanism 70 can adopt an air cylinder or an electric cylinder, and the control mechanism 5 controls the power mechanism.

The bag clamp assembly is further provided with a protective mounting piece, and the protective mounting piece is fixedly connected with the mounting seat (the left mounting seat 11 or the right mounting seat 12 according to the position).

The power mechanism is provided with a rack transmission piece 7, the rack transmission piece 7 is arranged in a protective installation piece, the protective installation piece is fixedly connected with the installation seat, the first bag clamping piece 51 and the second bag clamping piece 52 are installed on the protective installation piece, and a bag clamp formed by combining the first bag clamping piece 51 and the second bag clamping piece 52 is connected with the rack transmission piece 7 through a gear.

The protective mounting piece extends out of the front of the mounting seat in an arm shape, and the outer shape of the protective mounting piece can be a thin cylindrical shape or a thin rectangular cylindrical shape or other shapes. The rear end of the guard mounting is mounted in the mounting hole 10 of the mounting. The rack transmission member 7 is provided along the length direction of the protective installation member, and the plurality of pocket clamps are arranged along the length direction of the protective installation member.

The first bag clamping member 51 and the second bag clamping member 52 are respectively provided with

gears

71 and 72, the gear 71 of the first bag clamping member is meshed with the rack transmission member 7, and the gear 72 of the second bag clamping member is meshed with the gear 71 of the first bag clamping member.

The rack transmission member 7 is provided with a plurality of rack sections (in this embodiment, a first section 7a and a second section 7b are connected to form a rack), and each rack section corresponds to one bag clamp and is meshed with the gear 71 of the corresponding bag clamp. When the bag holders are provided in plural number, the number of the rack pitch in the rack gear 7 may be different from the number of the bag holders and less than the number of the bag holders, so that the gear (e.g., gear 72) of one bag holder is engaged with the rack, and the gear (e.g., gear 71) of the other bag holder is connected to the gear (e.g., gear 72) engaged with the rack through a gear connection structure or other transmission mechanism to be rotated.

The pocket holder assembly is provided with a structure for preventing the rack transmission member 7 from rotating, which means that the rack transmission member 7 rotates in parallel with the axis of the rack. The structure for preventing rotation of the rack transmission member includes: the side of rack drive spare 7 sets up rather than parallel and the guide positioning piece 73 that links together, the protection installed part sets up the guide positioning hole with guide positioning piece complex and supplies guide positioning piece 73 to insert, the rack drive spare also sets up direction position 74, the protection installed part still sets up the guiding hole that supplies rack drive spare to insert and lead to position 74. The rack gear 7 and the connecting piece 75 of the guiding and positioning piece 73 are also flat, and the mounting hole 10 is also provided with a guiding hole 15 of the connecting piece 75 for guiding the forward and backward movement and preventing the rotation. Further, the protection installation part and the installation seat can be provided with an anti-rotation fit, for example, a plane is arranged at a part of the protection installation part inserted into the installation hole 10, or the outer contour of the cross section of the part of the protection installation part inserted into the installation hole 10 is rectangular.

The protective mounting part is formed by connecting an upper component 61 and a lower component 62, the lower component 62 is used for mounting the first bag clamping piece 51 and the second bag clamping piece 52, and the upper component 61 is provided with holes for the

shafts

510 and 520 of the first bag clamping piece and the second bag clamping piece to pass through; the

gears

71, 72 are disposed in the combined internal cavity of the upper and lower assemblies.

Fig. 31 shows horizontal straight line adjustment mechanism can be the motion of motor drive lead screw, drives both ends screw cover and keeps away from and be close to the structure of motion to adjust the distance between the bag clamp, including the lead screw that the level set up, revolve to opposite left screw cover and right screw cover, the lead screw revolves to opposite threaded

rod

23, 24 for controlling and corresponds with left screw cover and right screw cover respectively and be connected, left side screw cover, right screw cover set up respectively on left mount pad, right mount pad, and left mount pad and right mount pad ability synchronous reverse motion. As shown in fig. 28-30, if a double-head motor is used, the screw rod can also be formed by horizontally arranging two

screw rods

23 and 24 with opposite rotation directions. The horizontal linear adjusting mechanism can also be a structure matched with a gear and a rack.

guide rail

33, 34 are fixed on mounting bracket 4. Correspondingly, the power mechanism of the horizontal linear adjusting mechanism, the screw rod mounting rack of the adjusting mechanism and the like can also be arranged on the mounting rack 4. The horizontal linear guide mechanism can also adopt a structure of a sliding bearing and a sliding rod.

The power unit 20 is fixed to the mounting frame 4. The power unit 20 may also be fixed to the turntable 300, or to both the mounting frame 4 and the turntable 300.

The air cylinders of the bag clamping assembly are communicated with a controller (a pneumatic control valve 5) through a connecting pipe 501, each bag clamping mechanism (a left bag clamping mechanism and a right bag clamping mechanism) is correspondingly provided with a control valve 5, the control valves 5 are installed at the back of the mounting frame 4 and rotate along with the mounting frame, each air cylinder control valve 5 is connected to a switching device 400 (an air path distribution channel) through a connecting pipe 504, the switching device 400 is fixedly installed at the upper end of a steering wheel main shaft 600, is coaxial with the main shaft 600 and rotates along with the main shaft 600, and the steering wheel 300 is fixedly connected with the main shaft 600; the main shaft 600 is rotatably connected to an outer shaft 601 through a bearing 602, and the outer shaft 601 is fixedly connected to the frame 700. The main shaft 600 is a hollow shaft, and the air vent pipeline connected with the outside of the adapter 400 is routed from the inside of the main shaft 600. The switching device 400 and the control valves 5 may be separately arranged in the above-mentioned manner, or the switching device 400 may be a gas path rotary distributor, the gas path rotary distributor is provided with the control valves 5 corresponding to the power of each bag clamping mechanism, and the program gives a signal to the control valves to control the opening and closing of the bag clamping mechanisms.

A control member 510 is arranged at a position where the bag clamp needs to be opened, the control member 510 is connected with power (an air cylinder 511), the air cylinder 511 drives the control valve 5 to be opened (namely, the control valve 5 extends forwards in the radial direction to be matched with the control valve 5), and the control valves 5 of different bag clamping mechanisms are independently controlled. The mounting member (cylinder 511) of the control member 510 is fixedly mounted, and in this embodiment, is fixed to the upper end surface of the outer shaft 601, and the control member 510 is fitted to the cylinder control valve 5 passing right in front of the mounting member, and controls opening and closing of the cylinder control valve 5 to individually control opening and closing of the bag holder. The motor lead of each group of bag clamp adjusting mechanisms penetrates through a center hole of the main shaft, the lead is connected with a conductive mechanism 601 arranged at the bottom end of the main shaft, and the conductive mechanism 601 adopts a contact type conductive mode, such as a collecting ring, a slip ring and the like.

If the power device of the bag clamp assembly adopts an electric cylinder, the control valve 5 can be other electric controllers. Controls 510 are respective controllers. Or the power of the control element 510 and the control element can be replaced by a rotary controller, the rotary controller can adopt a rotary encoder, the rotary encoder is arranged on the main shaft 600, a designated rotation angle of the rotary encoder is set through a program and is matched with a position where a designated station needs to control opening and closing of the bag clamp, when the rotary encoder rotates to the designated angle, the rotary encoder sends information to a controller of the control valve 5, and the controller of the control valve 5 correspondingly controls the bag clamping mechanism reaching the position to perform opening and closing actions, so that the control is convenient.

The working principle of the circulating mechanism of the utility model is as follows: the turntable power device 301 drives the main shaft 600 and the steering wheel 300 to rotate, and drives the bag clamping mechanisms to rotate according to a circulating motion route, so that conveying is performed. The bag clamp adjusting mechanism adjusts the distance between the left mounting seat 11 and the right mounting seat 12 through a motor, and meets working requirements of stations, such as the requirement of reducing the distance before a bag opening station and the requirement of straightening before a sealing station. The bag clamp assembly drives the bag clamp to open and close through the air cylinder, the control piece 510 controls the air cylinder control valve 5 to be opened and closed at the bag inlet station and the bag outlet station, and the bag clamp is opened to finish bag receiving and bag conveying work. Similarly, at other stations needing to remove the bags, for example, at any station after the bag opening detection station, a bag removing station is arranged, and the bag clamp is opened in the above manner through program control to remove the unqualified bags.

The working mechanism of the bag opening and detecting station according to the present invention is described in detail below with reference to the accompanying drawings, and is incorporated into the detecting structure, so that the detecting operation of whether the bag opening is correctly opened is completed in the bag opening operation (or, the bag bottom is ensured to be uniformly opened in the detecting operation). The working mechanism can also be arranged at a detection station or a bag opening bottom station of the bag packaging machine, so that the corresponding station is endowed with additional functions.

The working mechanism comprises a fixed support 800, a lifting support 81, a lifting power mechanism for driving the lifting support 81 to do lifting motion, and a bag bottom opening mechanism, wherein the bag bottom opening mechanism is provided with a bag bottom opening piece and a bag wall opening structure, and the bag bottom opening mechanism is arranged on the lifting support 81.

The fixed support 800 is installed at a detection and bag opening bottom station of the bag feeding and packaging machine, a lifting guide rod 801 and a lifting driving mechanism are fixed in the fixed support (in this embodiment, an electric cylinder 802 can also adopt an air cylinder or a motor), the lifting support 81 is fixedly connected with an extension rod 803 of the electric cylinder 802, and a hole or a guide sleeve 811 matched with the guide rod 801 is arranged.

The descending height of the bag supporting bottom mechanism is uniformly determined by a lifting power mechanism according to a set descending stroke, and the bag supporting bottom pieces descend to the same height in the whole batch of work, so that the shapes of the bags in the same batch are consistent as much as possible when the bags are filled.

Prop bag end piece and include that left and right prop bag end piece 82, prop bag end piece and set up swing arm position 821, the swing arm position is as strutting the position, the structure that struts the bag wall includes swing arm position 821 and strut actuating mechanism 83 and prop bag end piece elasticity canceling release mechanical system 84, strut the actuating mechanism drive left and right prop bag end piece 82 and open, strut the bag wall through the swing arm position, strut the bag wall when pushing up the bag end, can improve and prop the bag end effect, the final mesh of perfect realization normal filling.

The left and right bag bottom supporting pieces 82 are rotatably installed on the lifting support 81 through a shaft 825, the reference numeral 812 is a mounting hole of the shaft 825, a propping driving mechanism is installed on the lifting support 81, the propping driving mechanism 83 is provided with a driving rod 831, the driving rod 831 is provided with a top block 832, the left and right bag bottom supporting pieces 82 are respectively provided with a structure 822 matched with the top block 832, and the top block 832 is acted by the top block 832 when descending, so that the left and right bag bottom supporting pieces 82 are rotated and opened. The top block 832 may provide a symmetrical incline for the actuation structure 822, which may employ rollers, shafts, etc. for the structure 822. When the lifting support descends to the proper position, that is, the bag bottom opening mechanism is pushed into the designated position of the bag bottom, the bag bottom opening driving mechanism 83 drives the top block to move downwards to open the structure 822, so that the bag bottom opening part rotates and the swing arm part of the bag bottom opening part is opened to complete the bag opening action.

The expanding driving mechanism 83 can be a cylinder, a motor, an electric cylinder, etc., and is mounted on the lifting bracket 81 with an adjustable mounting height, so that the adjustment of the swing angle of the bag supporting bottom piece can be adjusted by adjusting the height of the expanding driving mechanism, and the driving rod 831 penetrates through the lifting bracket 81 and is connected with the top block 832 at the bottom. The supporting driving mechanism 83 can be provided with a connecting frame 833, the connecting frame 833 is connected with the lifting support 81, a mounting piece 834 of the driving mechanism 83 is provided with a long hole vertical to the horizontal plane, and the long hole is matched with a mounting hole on the connecting frame 833, so that different mounting heights of the driving mechanism can be obtained by adjustment.

The lower ends 823 of the left and right bag opening bottom pieces 82 are inclined to form a cone in a matching manner, the cone is used as a functional part for pushing the bag bottom, a cavity 824 is formed between the swing arm parts 821 of the left and right bag opening bottom pieces, and a detection piece mounting and connecting part of the bag opening detection mechanism is arranged in the cavity; the two ends of the elastic element 84 of the elastic reset mechanism are respectively connected with the left bag opening bottom piece 82 and the right bag opening bottom piece 82, and the functions of opening the bag bottom, opening the bag wall and installing the detection piece are simultaneously provided through a very compact structure.

The utility model is also provided with a bag opening detection mechanism for detecting whether the bag opening is opened. The bag opening detection mechanism is arranged on the lifting bracket 81.

The bag opening detection mechanism comprises a detection piece mounting frame 851, a sensor (not shown in the figure), a sensor support 852 and an elasticity detection part 853, wherein the lower end of the elasticity detection part 853 is installed on the detection piece mounting frame 851 (which can be integrated or connected by a fastener), the detection piece mounting frame 851 is installed on the lifting support 81, and the sensor support 852 is installed on the lifting support 81. The mounting bracket 851, which is a part of the detecting member mounting connection portion, is disposed in the cavity 824.

The elastic detection part 853 is provided with a detection part 854 matched with the bag opening, the upper part of the elastic detection part 853 is matched with a sensor arranged on a sensor support 852, and the sensor can adopt a proximity switch. The elastic detection part 853 can be pressed to elastically deform, and if the bag opening is opened, the elastic detection part 853 can enter the bag along with the bag opening bottom piece, and elastically deform under the extrusion of the bag wall to separate from the proximity switch, so that a sensing signal of successful bag opening is obtained. If the bag mouth is not opened or not opened correctly, the bag opening bottom piece 82 cannot enter the bag, and accordingly, the elastic detection part 853 cannot enter the bag together with the bag opening bottom piece 82, and the elastic detection part 853 is not deformed by the resistance of the bag mouth, so that whether the bag mouth is opened correctly or not can be detected.

The elastic detection component 853 comprises a left detection component and a right detection component, and the lower part of the elastic detection component is positioned in a cavity 824 between the left bag bottom opening piece and the right bag bottom opening piece in the bag bottom opening mechanism; the upper parts of the left and right detection members are cantilevered, and in a free state, the upper parts of the left and right detection members pass through the through holes 826 formed in the left and right bag opening bases, and the upper parts of the left and right detection members pass through the outer sides of the left and right bag opening bases to serve as detection parts 854. Inductor and inductor support set up in the outside at left and right bag bottom spare top of propping, still can set up the spacing part 855 (for example adopt the bolt) of elasticity detection part 853 upper end on it, protect the inductor. The left and right detection parts can adopt elastic sheets. The detection parts of the left and right detection parts are in the shape of bevel edges inclined upwards and outwards.

The detection of the bag opening detection mechanism may be performed prior to or simultaneously with the lowering of the lifting bracket 81. That is, the operation of the bag opening bottom expanding drive mechanism 83 and the operation of the bag opening detection mechanism may be performed simultaneously or later than the detection time of the bag opening detection mechanism.

The bag-feeding packaging method of the present invention is further described below in accordance with the sequence of stations in conjunction with the above-described structure of the bag-feeding packaging machine, and comprises the following station steps:

s1 bag storage and separation station: the working device is used for storing the bag stack 200 and sorting and separating the bags, and the working device of the station is marked with a reference numeral 901; the work of the station can be completed by adopting the working device which has the corresponding function at the bag storage and separation station of the prior bag feeding and packaging machine.

S2 bag taking and feeding station: the separated bags are sent to a circulating bag conveying device; the station is a station for completing bag handover work by a circulating mechanism and a working mechanism of a bag storage and distribution station.

The circulating bag conveying device conveys the bags to each station to finish the action of each station through a power mechanism for circulating conveying after the bags are received;

s3 zipper bag opening station: when the bag is provided with a zipper, the zipper is opened for the bag opening, and when the bag is not a zipper bag, the step is omitted; the step omission means that at the zipper bag opening station, the working device corresponding to the zipper opening work does not act or the zipper bag opening station is cancelled. In the utility model, the zipper opening operation can be performed by opening the bag mouth a little by using a sucking disc, then clamping two sides by using a clamp to open the zipper outwards, and reference numeral 903 is a zipper opening mechanism.

S4 bag opening station: for the opening action of the bag. Likewise, the bag opening operation can also be performed by a suction cup capable of displacement. Reference numeral 904 is a bag opening mechanism.

S6 bag opening bottom station (named bag opening bottom + detection station in this embodiment, the device number of this station is 906): the bag opening detection device is used for detecting whether the bag is opened successfully or not and judging whether the bag is subjected to the next action or not; and further opening the bag bottom on the basis of opening the bag, so that the action of the next station is facilitated. The detection station can also be separated from the station and arranged before or after the station

In the embodiment, the detection work of the station S5 is merged into the bag bottom opening work of the station S6 and combined into a station; the working device adopts the device shown in figures 11-15.

S7 filling station: for filling the bag with material. Reference numeral 907 denotes a filling device of the station.

And S8, a sealing station, wherein the sealing operation is carried out on the filled bags. Reference numeral 908 is a sealing device at this station.

In this embodiment, after the sealing station of S8, the secondary sealing station of S9 is further provided: the bag sealing device is used for performing a second sealing action on the bag which is sealed for the first time, or performing a cooling function on the bag at a secondary sealing station, stopping a station for natural cooling, or setting a cooling structure according to needs. Reference numeral 909 is a secondary sealing device of the station.

Whether a secondary sealing station is arranged or not is determined according to actual requirements, and an S10 discharging station is arranged after the sealing station or the secondary sealing station. Reference numeral 910 is the apparatus of the station.

In this embodiment, get and send a bag station, open zip fastener bag station, open a bag station, prop the bag end and detect station, filling station, once seal the station, the secondary seals the station and arranges in proper order along the circumferencial direction at the bottom of the bag.

The zipper opening operation A1 can be performed during the bag conveying process from the station S2 to the station S3 by the bag circulating and conveying device. The bag clamp adjusting mechanism controlled by a single program finishes the set moving distance, the distance between the left bag clamp and the right bag clamp is reduced by shortening the distance between the left mounting seat 11 and the right mounting seat 12, the bag opening is further moved for a certain distance in the central direction of the bag, the bag opening is loosened in an arching manner, and the success rate of zipper opening work is improved.

The bag opening work a2 can be achieved by first completing the set moving distance by the bag clamp adjusting mechanism controlled by a single program in the process of conveying the bags from the station S3 to the station S4 by the circulating bag conveying device, and further moving the bag opening to the bag center direction by a certain distance by shortening the distance between the left and right mounting

seats

11 and 12 to improve the bag opening effect.

In a5 process, in a process a5, when the bag is transferred from the S7 station to the S8 station by the circulating bag feeder, the bag mouth can be straightened before sealing, the bag clamp adjusting mechanism can also accomplish the straightening operation, the bag clamp adjusting mechanism controlled by a single program completes the set moving distance, and the distance between the left and right bag clamps is enlarged by enlarging the distance between the left and right mounting

bases

11 and 12, thereby straightening the bag mouth.

In addition: a labeling and coding station (provided before the bag is not opened) may also be provided before the S3 station. And eliminating stations can be additionally arranged after the station S5 and between the stations.

In addition, a 0: when the bags pass through the process from S2 to the circulating bag feeding device, in the process of A0, the bag clamping mechanism of the bag receiving device in the circulating bag feeding device can also perform the abdicating function on the bags through the adjusting mechanism controlled by a single program.

In fig. 4, D1 represents a bag with a zipper opening completed, D2 represents a bag with an opening completed, D3 represents a bag with a stretched bag bottom and a detected acceptable state, D4 represents a bag filled with a material, D5 represents a bag in a state after primary sealing, and D6 represents a bag in a state after secondary sealing.

Unless otherwise specified, in the present invention, if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not indicated or implied that the device or the element to be referred to must have a specific orientation, be constructed in a specific orientation and be operated, and therefore, the terms describing the orientation or positional relationship in the present invention are used for illustrative purposes only and are not to be construed as a limitation of the present patent, and it is possible for one of ordinary skill in the art to understand the specific meaning of the above terms according to specific situations by combining the drawings.

Unless expressly stated or limited otherwise, the terms "disposed," "sandwiched," and "connected" are intended to be inclusive and mean, for example, that the elements may be fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Claims

1. A bag feeding and packaging machine comprises a rack, a circulating bag feeding device and a power device for driving the circulating bag feeding device to rotate, wherein a plurality of bag clamping mechanisms are distributed on the circulating bag feeding device along the circulating movement direction, and are conveyed by the circulating mechanism to circularly pass through a plurality of stations required by a bag taking and feeding station, a sealing station and a bag taking and feeding station or a bag taking and feeding station, a discharging station and a bag taking and feeding station; the bag clamping mechanism is characterized by comprising a left bag clamping assembly, a right bag clamping assembly and a bag clamping adjusting mechanism, wherein the left bag clamping assembly and the right bag clamping assembly are connected with the bag clamping adjusting mechanism; the power device of the bag clamp assembly and the bag clamp assembly are driven by the bag clamp adjusting mechanism to move together, and the bag clamps in the bag clamp assembly are controlled to be opened and closed independently.

2. The bag feeding and packaging machine as claimed in claim 1, wherein the power device of the bag clamp adjusting mechanism employs a motor, and the power device of the bag clamp assembly employs a cylinder; the air cylinders of the bag clamping assembly are communicated with the control valves through connecting pipes, each group of bag clamping mechanisms is correspondingly provided with one control valve, each air cylinder control valve is connected to the switching device through a connecting pipe, and the switching device is fixedly installed at the upper end of the main shaft of the circulating mechanism, coaxial with the main shaft and rotates along with the main shaft.

3. A bag feeding and packaging machine as claimed in claim 2, wherein a control member is provided at a position where the bag holder is designated to be opened, the control member being driven by power to control the timing of opening, the control member being adapted to be opened and closed in cooperation with said cylinder control valve.

4. The bag feeding and packaging machine as claimed in claim 2, wherein the main shaft is rotatably connected to an outer shaft through a bearing, the outer shaft is fixedly connected to the frame, the lead of the power unit of each set of bag holder adjusting mechanisms is inserted through a central hole of the main shaft, and the lead is connected to a conductive mechanism disposed at a bottom end of the main shaft, wherein the conductive mechanism adopts a contact type conductive manner.

5. The bag feeding and packaging machine as claimed in claim 1, wherein the power device of the bag clamp adjusting mechanism employs a motor, and the power device of the bag clamp assembly employs a cylinder; the air cylinder of the bag clamping assembly is communicated with the control valve through a connecting pipe, each group of bag clamping mechanisms is correspondingly provided with one control valve, the circulating bag conveying mechanism is provided with a rotary controller, the rotary controller is arranged on a main shaft of the circulating mechanism, and the rotary controller is in signal connection with the controller of the control valve.

6. The bag feeding and packaging machine according to claim 1, wherein the bag clamping mechanism comprises a bag clamping assembly and a mounting seat, the bag clamping assembly is provided with a first bag clamping member and a second bag clamping member, the first bag clamping member and the second bag clamping member are combined into a bag clamp, the bag clamping assembly is further provided with a power mechanism and a protection mounting member, the protection mounting member is fixedly connected with the mounting seat, the first bag clamping member is connected with the power mechanism, and the power mechanism independently drives the first bag clamping member to open and close.

7. The bag feeding and packaging machine of claim 6 wherein the power mechanism is disposed within the shield mount in the bag clamp assembly.

8. The bag-feeding and packaging machine of claim 6 wherein the protective mounting member extends in an arm-like manner forward of the mounting base; the protective mounting is a tubular member; a power mechanism in the bag clamp assembly adopts an air cylinder or an electric cylinder and is connected with the first bag clamping piece through a movable connecting piece.

9. The bag feeding and packaging machine of claim 8 wherein the second bag holding member is secured to an end of the protective mounting member, the first bag holding member is disposed outside the second bag holding member and is hingedly mounted, and the movable connecting member is movably connected to the first bag holding member; and a power mechanism in the bag clamp assembly is movably connected with a connecting structure in the mounting hole of the mounting seat, or movably connected with the rear end of the protective mounting piece, or mounted behind the mounting seat.

10. The bag-feeding and packaging machine of claim 9 wherein said movable connector comprises a first movable connector and a second movable connector; the rear end of the first movable connecting piece is connected with the extension rod of the power mechanism, the front end of the first movable connecting piece is rotatably connected with the rear end of the second movable connecting piece, and the front end of the second movable connecting piece is movably connected with the first bag clamping piece.

11. The bag feeding and packaging machine of claim 1 wherein the bag clamping mechanism comprises a bag clamp assembly, a mounting base, the bag clamp assembly is provided with a first bag clamping member and a second bag clamping member, and the first bag clamping member and the second bag clamping member are combined to form a bag clamp; the bag clamp assembly is further provided with a power mechanism and one or more bag clamps, the one or more bag clamps are driven by the power mechanism to synchronously rotate by taking respective rotating shafts as fulcrums, and the power mechanism independently drives the bag clamps to open and close.

12. The bag feeding and packaging machine of claim 11 wherein said plurality of bag holders is two bag holders.

13. The bag feeding and packaging machine according to claim 11, wherein the bag clamp assembly further comprises a protective mounting member, the power mechanism comprises a rack transmission member, the rack transmission member is disposed in the protective mounting member, the protective mounting member is fixedly connected to the mounting base, the first bag clamping member and the second bag clamping member are mounted on the protective mounting member, and the bag clamp formed by combining the first bag clamping member and the second bag clamping member is connected to the rack transmission member through a gear.

14. The bag feeding and packaging machine of claim 13 wherein the shield mounting member extends in an arm shape forward of the mounting base, the rack drive member is disposed along a length of the shield mounting member, and the plurality of bag holders are disposed along the length of the shield mounting member.

15. The bag feeding and packaging machine as claimed in claim 13, wherein the first bag holding member and the second bag holding member are provided with gears, respectively, the gear of the first bag holding member is engaged with the rack transmission member, and the gear of the second bag holding member is engaged with the gear of the first bag holding member.

16. The bag feeding and packaging machine of claim 13 wherein said shield mounting member is comprised of an upper member and a lower member connected, said lower member mounting said first bag holding member and said second bag holding member, said upper member being provided with an aperture for the shaft of said first bag holding member and said second bag holding member to pass through; the gear is arranged in an inner cavity formed by combining the upper assembly and the lower assembly.

17. The bag feeding and packaging machine of claim 13 wherein said rack drive member is provided with a plurality of rack bars, each rack bar corresponding to a respective bag holder.

18. The bag feeding and packaging machine according to claim 1, wherein the bag clamp adjusting mechanism comprises a left mounting seat, a right mounting seat, a horizontal linear adjusting mechanism and a horizontal linear guiding mechanism, the horizontal linear adjusting mechanism is provided with a power mechanism, and the left mounting seat and the right mounting seat are respectively provided with a left bag clamp assembly and a right bag clamp assembly; the left mounting seat, the right mounting seat and the horizontal linear adjusting structure are connected and can be driven by the power mechanism to independently adjust the distance between the left bag clamp assembly and the right bag clamp assembly.

19. The bag feeding and packaging machine as claimed in claim 18, wherein the horizontal linear adjustment mechanism comprises a horizontally disposed screw rod, and left and right internal screw members with opposite rotation directions, the screw rod is a threaded rod with opposite rotation directions and is correspondingly connected with the left and right internal screw members, the left and right internal screw members are respectively disposed on the left and right mounting seats, and the left and right mounting seats can synchronously move in opposite directions.

20. The bag feeding and packaging machine according to claim 18, wherein the horizontal linear adjustment mechanism comprises two horizontally disposed screw rods with opposite rotation directions, and left and right internal thread members with opposite rotation directions, the left and right internal thread members are respectively connected with the two screw rods with opposite rotation directions, the left and right internal thread members are respectively disposed on the left and right mounting seats, and the left and right mounting seats can synchronously move in opposite directions.

21. The bag feeding and packaging machine of claim 18 wherein said horizontal linear adjustment mechanism is a rack and pinion arrangement.

22. The bag feeding and packaging machine according to claim 21, wherein the horizontal linear adjustment structure is provided with a left horizontal rack and a right horizontal rack, the gear is engaged with the left horizontal rack and the right horizontal rack to drive the left horizontal rack and the right horizontal rack to move synchronously and reversely, the left mounting seat and the right mounting seat are respectively provided with the left horizontal rack and the right horizontal rack, and the left mounting seat and the right mounting seat can move synchronously and reversely.

23. The bag feeding and packaging machine according to claim 18, wherein the bag clamp assemblies mounted on the left and right mounting bases are provided with single-station bag clamps, or with multi-station bag clamps arranged in tandem.

24. The bag-feeding packaging machine of claim 23 wherein said multi-station clamp is a two-station clamp.

25. The bag feeding and packaging machine of claim 18 wherein the mounting bracket of said clamp adjustment mechanism is secured to a steering wheel of the bag feeding and packaging machine; the left bag clamp assembly and the right bag clamp assembly are respectively provided with a driving mechanism which is controlled independently so as to independently drive the bag clamps in the bag clamp assembly, and the driving mechanisms in the left bag clamp assembly and the right bag clamp assembly are respectively arranged on the left mounting seat and the right mounting seat and respectively move along with the left mounting seat and the right mounting seat.

26. The bag feeding and packaging machine according to claim 1, wherein a working mechanism for opening the bag bottom is provided at the detecting station, the bag bottom opening station, or the detecting and bag bottom opening station, the working mechanism comprises a fixing bracket, a lifting power mechanism for driving the lifting bracket to perform lifting motion, and a bag bottom opening mechanism, the bag bottom opening mechanism is provided with a bag bottom opening piece and a bag wall opening structure, and the bag bottom opening mechanism is provided on the lifting bracket.

27. The bag feeding and packaging machine according to claim 26 wherein the lowering height of said bag supporting base mechanism is determined by a lifting and lowering power mechanism in accordance with a predetermined lowering stroke.

28. The bag feeding and packaging machine according to claim 26, wherein the bag opening bottom member is provided with an opening portion, and the structure for opening the bag wall comprises the opening portion, an opening driving mechanism and an elastic restoring mechanism, and the opening driving mechanism drives the bag opening bottom member to open the bag wall through the opening portion.

29. The bag feeding and packaging machine according to claim 28, wherein the bag supporting bottom member comprises a left bag supporting bottom member and a right bag supporting bottom member, the left bag supporting bottom member and the right bag supporting bottom member are rotatably mounted on a lifting bracket, a supporting drive mechanism is mounted on the lifting bracket, the supporting drive mechanism is provided with a drive rod, the drive rod is provided with a top block, the left bag supporting bottom member and the right bag supporting bottom member are respectively provided with a part matched with the top block, and the top block is acted when the top block descends, so that the left bag supporting bottom member and the right bag supporting bottom member are rotatably opened.

30. The bag feeding and packaging machine of claim 29 wherein said distracting drive mechanism is adjustably mounted in height on said lifting frame, said drive rod extending through said lifting frame and engaging said top block at the bottom thereof.

31. The bag feeding and packaging machine according to claim 28, wherein the bag opening bottom piece comprises a left bag opening bottom piece and a right bag opening bottom piece, the lower ends of the left bag opening bottom piece and the right bag opening bottom piece are inclined to form a cone in a matching manner, the cone is used as a functional part for pushing the bag bottom, a cavity is formed between the swing arm parts of the left bag opening bottom piece and the right bag opening bottom piece, and a detection piece mounting and connecting part of the bag opening detection mechanism is arranged in the cavity; and two ends of an elastic element of the elastic resetting mechanism are respectively connected with the left and right bag supporting bottom pieces.

32. A bag feeding and packaging machine as claimed in claim 26, 27, 28, 29, 30 or 31 wherein the lifting carriage is further provided with bag opening detection means for detecting whether a bag is opened.

33. The bag feeding and packaging machine of claim 32 wherein the bag opening detection mechanism comprises a detector mounting bracket, a sensor support and a resilient detection member, the resilient detection member having a lower end mounted on the detector mounting bracket, the detector support being mounted on a lifting support, the sensor support being mounted on the lifting support; the upper portion of elasticity detecting element cooperates with the inductor of installing on the inductor support, elasticity detecting element sets up the detection site with sack complex, elasticity detecting element can the pressurized and elastic deformation.

34. The bag feeding and packaging machine of claim 33 wherein said resilient sensing member comprises left and right sensing members, said sensing member mounting bracket and a lower portion of said resilient sensing member being disposed in a cavity between left and right bag bottom members of the bag bottom opening mechanism; the upper parts of the left detection part and the right detection part are cantilever-shaped, and pass through the via holes on the left bag bottom piece and the right bag bottom piece in a free state, and the parts of the left detection part and the right detection part, which pass through the outer sides of the left bag bottom piece and the right bag bottom piece, are used as detection parts.

35. The bag feeding and packaging machine according to claim 33, wherein the detecting member is a resilient piece having a detecting portion in the shape of a sloping edge inclined upward and outward; the inductor and the inductor bracket are arranged at the outer sides of the tops of the left and right bag supporting bottom pieces, and a limiting part at the upper end of the elastic detection part is also arranged on the inductor and the inductor bracket.