CN115285406A

CN115285406A - Automatic film connecting mechanism of packaging machine

Info

Publication number: CN115285406A
Application number: CN202211054924.0A
Authority: CN
Inventors: 汪洪静; 洪振宇
Original assignee: Eiahe Packaging System Co ltd
Current assignee: Eiahe Packaging System Co ltd
Priority date: 2022-08-31
Filing date: 2022-08-31
Publication date: 2022-11-04

Abstract

The invention discloses an automatic film receiving mechanism of a packaging machine, which comprises a rack, wherein a film changing rack, a film preparing mechanism and a film conveying mechanism are arranged on the rack; the film changing frame is provided with more than two stations along the circumferential direction in a matching manner with the film roll, and the rack is provided with a first driving device for driving the film changing frame to rotate; the film preparing mechanism comprises a film fixing roller and a film feeding roller, and a second driving device for driving the film feeding roller to move to the film feeding mechanism is arranged on the rack; the film feeding mechanism comprises a carrier roller and a press roller, and a third driving device for driving the carrier roller to rotate is arranged on the rack. According to the invention, a plurality of film rolls can be placed on the film changing frame, and after one film roll is sent out by the film feeding mechanism, a new film roll can be fed by the film preparing mechanism, so that the automatic film supply is realized, the trouble of stopping the film changing operation is avoided, and the film feeding efficiency is improved.

Description

Automatic film connecting mechanism of packaging machine

Technical Field

The invention relates to the technical field of packaging processing, in particular to an automatic film connecting mechanism of a packaging machine.

Background

In daily life, the packaging machine is a machine for packaging and processing, and comprises the steps of bag making, filling and the like, wherein the bag making process of the packaging machine is as follows: the production method comprises the steps of folding film products such as films and non-woven fabrics into halves and then directly forming a bag bottom, carrying out hot-melt adhesion on the films in sections through a heat sealing mechanism to form the side edge of the bag, carrying out heat sealing, then cutting the films at the middle part of the heat sealing through a die cutting mechanism to form individual independent packaging bags, wherein the films are continuously supplied in a roll mode, each roll of the films can produce a plurality of packaging bags, after each roll of the films is used up, a worker needs to replace a new roll of the films, the machine needs to be stopped to carry out operations of film roll removal and new film roll installation during film replacement, then the worker unfolds and lays a new roll of the films on a subsequent production line, and then the production line is started to process the new roll of the films. The film changing mode needs workers to lay new films backwards, the laying process takes longer time, a subsequent production line is in a shutdown state during film changing, and the production time is delayed, so that the film changing mode without shutdown is needed.

Disclosure of Invention

The invention aims to avoid the defects in the prior art and provides the automatic film connecting mechanism of the packaging machine, so that the defects in the prior art are effectively overcome.

In order to realize the purpose, the invention adopts the technical scheme that: an automatic film receiving mechanism of a packaging machine comprises a rack, wherein a film changing frame, a film preparing mechanism and a film conveying mechanism are arranged on the rack; more than two stations are arranged on the film changing frame along the circumferential direction in a matched manner with the film roll, and a first driving device for driving the film changing frame to rotate is arranged on the machine frame; the film preparing mechanism comprises a film fixing roller and a film feeding roller, and a second driving device for driving the film feeding roller to move to the film feeding mechanism is arranged on the rack; the film feeding mechanism comprises a carrier roller and a press roller, and a third driving device for driving the carrier roller to rotate is arranged on the rack.

Further, trade and be provided with the station of two centrosymmetries on the membrane frame, trade the both ends of membrane frame and cooperate the membrane spool and all be provided with the draw-in groove, draw-in groove department is provided with the card axle mechanism that can block the membrane spool.

Further, card axle mechanism is including the end fixed wheel, the side fixed wheel and the driving wheel that set up around the membrane axle, it is provided with the clamp plate to trade articulated on the membrane frame, the rotatable setting of driving wheel is on the clamp plate, trade and be provided with drive clamp plate pivoted pinch roller mechanism on the membrane frame.

Furthermore, the clamping wheel mechanism comprises a rotating arm and a fourth driving device, wherein the rotating arm is hinged to the rack, the fourth driving device drives the rotating arm to rotate, a connecting rod is hinged to the rotating arm, and the other end of the connecting rod is hinged to the pressing plate.

Further, decide the membrane roller and be hollow structure, decide the one end of membrane roller and connect evacuating device, decide and be provided with a plurality of holes of induced drafting on the membrane roller.

Further, a cutting groove is formed in the film fixing roller along the axial direction.

Furthermore, the frame is provided with moving frames in cooperation with the two ends of the compression roller, the compression roller is rotatably arranged on the moving frames, and the frame is provided with a fifth driving device for driving the moving frames to move up and down.

Further, the frame is articulated to be provided with and to trigger the frame, is provided with the trigger roller of pressing on the membrane on triggering the frame, the frame is gone up to cooperate and is triggered the frame and be provided with distance sensor.

Further, send the rear side of membrane mechanism to be provided with and connect membrane positioning mechanism, connect membrane positioning mechanism to include a plurality of guide roll, be provided with the crossbearer between the guide roll, be provided with range unit on the crossbearer, be provided with the sixth drive arrangement that the drive crossbearer reciprocated in the frame.

The technical scheme of the invention has the following beneficial effects: according to the invention, a plurality of film rolls can be placed on the film changing frame, and after one film roll is sent out by the film feeding mechanism, a new film roll can be fed by the film preparing mechanism, so that the automatic film supply is realized, the trouble of stopping the film changing operation is avoided, and the film feeding efficiency is improved.

Drawings

FIG. 1 is a perspective view of an embodiment of the present invention;

FIG. 2 is a perspective view of a first driving device according to an embodiment of the present invention;

FIG. 3 is a perspective view of the interior of a housing according to an embodiment of the present invention;

FIG. 4 is an enlarged view at A in FIG. 3;

FIG. 5 is a side view of the interior of a housing according to an embodiment of the present invention;

FIG. 6 is an enlarged view at B in FIG. 4;

FIG. 7 is a perspective view of a shaft clamping mechanism according to an embodiment of the present invention;

fig. 8 is a schematic perspective exploded view of a film fixing roller according to an embodiment of the present invention.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention.

As shown in fig. 1-8, the automatic film receiving mechanism of the packaging machine according to this embodiment includes a frame 1, and a film changing frame 2, a film preparing mechanism 3, and a film feeding mechanism 4 are disposed on the frame 1; a film roll to be moved and replaced is placed on the film replacing frame 2, the film preparing mechanism 3 is used for leading out the front end of the film roll to be replaced to prepare for film application, and the film sending mechanism 4 is used for sending out the film;

more than two stations are arranged on the film changing frame 2 along the circumferential direction in a matching manner with the film roll, and a first driving device 21 for driving the film changing frame 2 to rotate is arranged on the frame 1; in this embodiment, two stations are arranged on the film changing frame 2, the two stations are arranged on the film changing frame 2 in a central symmetry manner, wherein the station close to one film discharging side is a film feeding station, the other side is a station to be fed with the film, the first driving device 21 is a motor, and the motor is matched with a speed reducer to drive the film changing frame 2 to rotate 180 degrees to switch the two stations, so that the position switching between a new film roll and an old film roll is realized;

the film preparing mechanism 3 comprises a film fixing roller 31 and an upper film roller 32, and a second driving device 33 for driving the upper film roller 32 to move to the film feeding mechanism 4 is arranged on the rack 1; in this embodiment, the film fixing roller 31 is rotatably disposed on the frame 1, the film fixing roller 31 is provided with an upper film frame 34, the upper film roller 32 is rotatably disposed on the upper film frame 34, the second driving device 33 is an air cylinder for driving the upper film frame 34 to swing, the film fixing roller 31 is used for fixing the front end of a standby film roll, when an old film roll is about to be sent out, the second driving device 33 drives the upper film frame 34 to swing, the upper film roller 32 holds the front end of a new film fixed by the film fixing roller 31 to rotate upwards, the front end of the new film roll is dragged to the film sending mechanism 4, and the front end of the new film roll is driven by the film sending mechanism 4 to continue to be sent out;

the film feeding mechanism 4 comprises a carrier roller 41 and a press roller 42, and a third driving device 43 for driving the carrier roller 41 to rotate is arranged on the rack 1; the third driving device 43 is a motor, in this embodiment, the motor drives the carrier roller 41 to rotate through a synchronous belt (not shown in the figure), and the carrier roller 41 cooperates with the press roller 42 to send out the film forwards;

preferably, two centrosymmetric stations are arranged on the film changing frame 2, the two ends of the film changing frame 2 are provided with clamping grooves 22 matched with the film reels, the clamping grooves 22 are provided with shaft clamping mechanisms capable of blocking the film reels, the reels of the film rolls can be clamped at the clamping grooves 22, then the film reels are blocked by the shaft clamping mechanisms, the dismounting and the mounting of the films at the two stations on the film changing frame 2 are realized, the front side of the film changing frame 2 is a working station, the rear side of the film changing frame 2 is a standby film station, after the films at the working station are sent out, the first driving device 21 drives the film changing frame 2 to rotate 180 degrees to switch the two stations, the films at the standby film station are transferred to the working station for film supply, the empty rolls at the working station are transferred to the standby film station, a worker takes off the empty reel, and replaces a new roll of films for film standby;

preferably, the shaft clamping mechanism comprises a bottom fixed wheel 23, a side fixed wheel 24 and a driving wheel 25 which are arranged around the film shaft, the film changing frame 2 is hinged with a pressing plate 26, the driving wheel 25 is rotatably arranged on the pressing plate 26, the film changing frame 2 is provided with a clamping wheel mechanism which drives the pressing plate 26 to rotate, the film winding shaft is positioned through the bottom fixed wheel 23, the side fixed wheel 24 and the driving wheel 25, the driving wheel 25 and the pressing plate 26 are in an open state when the film winding shaft is installed, and after the film winding shaft is installed, the clamping wheel mechanism drives the pressing plate 26 to rotate, so that the driving wheel 25 presses on the film winding shaft, and the installation of the film winding shaft is completed;

preferably, the clamping wheel mechanism comprises a rotating arm 27 hinged on the film changing frame 2 and a fourth driving device 28 for driving the rotating arm 27 to rotate, a connecting rod 29 is hinged on the rotating arm 27, the other end of the connecting rod 29 is hinged on the pressing plate 26, in this embodiment, the rotating arm 27 can be hinged on the shaft of the side fixed wheel 24, the fourth driving device 28 is a screw 281 and a threaded sleeve 282 arranged on the film changing frame 2, the threaded sleeve 282 is hinged on the rotating arm 27, a threaded seat 283 is rotatably arranged on the film changing frame 2 in cooperation with the screw 281, the screw 281 rotates on the threaded seat 283 to drive the threaded sleeve 282 to move along the screw 281, the threaded sleeve 282 drives the rotating arm 27 to swing, and the rotating arm 27 drives the pressing plate 26 to swing through the connecting rod 29, so as to realize the switching of the opening and closing states of the driving wheel 25;

preferably, the film fixing roller 31 is of a hollow structure, one end of the film fixing roller 31 is connected with a vacuumizing device, and a plurality of air suction holes 311 are formed in the film fixing roller 31; in this embodiment, the vacuum-pumping device is a vacuum generator, the front end of the standby film roll can be placed on the film-fixing roller 31, and the film is sucked through the air suction holes 311 on the film-fixing roller 31;

preferably, the film fixing roller 31 is provided with a cutting groove 312 along the axial direction, after the front end of the film is sucked through the air suction hole 311, a worker can cut the front end of the film at the cutting groove 312 to enable the front end of the film to be flush, wherein the cutting groove 312 is positioned on the upper side of the air suction hole 311 to prevent the film from falling down when the film is cut, after cutting, in order to ensure that the front end of the film does not depart from the film fixing roller 31 when the film is applied, the worker can adhere the front end of the film to the film fixing roller 31 by using an adhesive tape, and the adhesive tape adhered to the front end of the film can be pulled off by the film feeding mechanism 4 when the film is applied; preferably, a torsion spring 313 is arranged between the film fixing roller 31 and the roller shaft thereof, namely, when the film fixing roller 31 rotates on the rotating frame through the roller shaft, the surface of the film fixing roller 31 can also rotate relative to the roller shaft, when the second driving device 33 drives the upper film frame 34 to rotate to form a film, the film fixing roller 31 and the upper film frame 34 rotate together, when the lower part of the front end of the film is conveyed to the film conveying mechanism 4 for conveying, the front end of the film can be pulled by the film conveying mechanism 4, and the front end of the film drives the surface of the film fixing roller 31 to rotate around the roller shaft thereof through an adhesive tape until the adhesive tape at the front end of the film is taken off by the film conveying mechanism 4;

preferably, moving frames 46 are arranged at two ends of the machine frame 1 matched with the compression roller 42, the compression roller 42 is rotatably arranged on the moving frames 46, a fifth driving device 44 for driving the moving frames 46 to move up and down is arranged on the machine frame 1, in the embodiment, the fifth driving device 44 is a cam rotatably arranged on the machine frame 1, a rocker 45 for driving the cam to rotate is arranged on the machine frame 1, a bracket 431 can be arranged on the moving frames 46 matched with the cam, and the rocker 45 is manually rotated to drive the cam to rotate so as to control the moving frames 46 to move up and down; in the working state, the moving frame 46 is positioned at the lower side, the press roller 42 presses the carrier roller 41, when the machine is operated for the first time, a worker is required to manually lay the film on the film feeding mechanism 4, and at the moment, the moving frame 46 needs to be lifted, so that the film can conveniently pass between the press roller 42 and the carrier roller 41;

preferably, the frame 1 is hinged with a trigger frame 5, the trigger frame 5 is provided with a trigger roller 51 pressed on the film, and the frame 1 is provided with a distance sensor 52 matched with the trigger frame 5; the trigger frame 5 is used for transmitting a signal to the film preparing mechanism 3, when the film preparing mechanism is in a working state, the film passes through the lower side of the trigger roller 51, the trigger roller 51 is upwards supported by the film, the trigger frame 5 is out of the range of the distance sensor 52, when the running film roll is conveyed, the tail end of the film is out of the film reel, the film is in a loose state, the trigger roller 51 cannot be continuously upwards supported by the film at the moment, the trigger frame 5 downwards rotates, the trigger frame 5 enters the monitoring range of the distance sensor 52, the distance sensor 52 transmits a signal of the upper film, and the film preparing mechanism 3 prepares for the upper film;

preferably, the film receiving and positioning mechanism 6 is arranged at the rear side of the film feeding mechanism 4, the film receiving and positioning mechanism 6 comprises a plurality of guide rollers 61, transverse frames 62 are arranged between the guide rollers 61, and distance measuring devices 63 are arranged on the transverse frames 62, in this embodiment, the distance measuring devices 63 are infrared counting sensors, and a sixth driving device 64 for driving the transverse frames 62 to move up and down is arranged on the frame 1; a rack 65 can be vertically arranged on the rack 1, a gear 66 can be arranged on the cross frame 62, the sixth driving device 64 is a servo motor for driving the gear 66 to rotate, and the servo motor drives the gear 66 to rotate so as to enable the cross frame 62 to move up and down along the rack 65; the film is sent out through the film sending mechanism 4 and then passes through the film receiving positioning mechanism 6, when the trigger frame 5 swings downwards to the position of the distance sensor 52, a signal is sent out by the distance sensor 52, the distance measuring device 63 starts to work to measure the distance that the film passes through, after the film passes through the preset distance, the film feeding is started at the position of the film preparing mechanism 3 (a plurality of color codes are arranged at equal intervals on the film, the length of the film from the film roll to the position of the carrier roller 41 is fixed, the number of the color codes from the film roll to the position of the carrier roller 41 can be counted in advance to determine the number of required counting, the distance that the film passes through is determined by the distance that the color codes pass through the counting device 63, so that the distance from the film to the carrier roller 41 after the film is separated from the reel is estimated, a signal is output after the required counting is reached, and the film feeding is started).

The working process of the embodiment is as follows:

two film rolls are preset on two stations of the film changing frame 2, the film rolls on the inner stations are firstly unfolded and laid by workers, and sequentially bypass the trigger frame 5, the carrier roller 41 and the guide roller 61, when a film passes through the carrier roller 41, the rocker 45 needs to be manually rotated to enable the cam to rotate, the movable frame 46 and the compression roller 42 are driven to move upwards, after the film passes through, the rocker 45 is reversely rotated, the movable frame 46 and the compression roller 42 move downwards, and the compression roller 42 is pressed on the film;

after the film is laid, the third driving device 43 drives the carrier roller 41 to rotate to drive the film to be sent out, then a worker lays the front end of a film roll on a station outside the film changing frame 2 to the position of the film preparing mechanism 3, the front end of the film sequentially bypasses the film feeding roller 32 and the film fixing roller 31, the front end of the film is sucked through the air suction hole 311 on the film fixing roller 31, then the worker cuts the front end of the film by a cutter to be level, and the front end of the film is adhered to the film fixing roller 31 by an adhesive tape;

after the film roll on the inner station is delivered, the tail end of the film roll is separated from the film reel, the film is not in a tight state any more, at the moment, the film loses the force for upwards supporting the trigger frame 5, the trigger frame 5 swings downwards to the position of the distance sensor 52, the distance sensor 52 transmits signals, a PLC (not shown in the figure) can be arranged on the frame 1 for centralized processing signals and is connected with each driving device, the distance measuring device 63 on the transverse frame 62 starts to count the color codes on the film, after the required number is counted, the tail end of the film roll is about to reach the carrier roller 41, the distance measuring device 63 outputs signals, the second driving device 33 drives the upper film frame 34 to swing, the upper film roll 32 supports the film on the outer station to the carrier roller 41, and the carrier roller 41 drives the upper film roll 32 to reversely rotate, pulling down the film on the film fixing roller 31, driving the film fixing roller 31 to rotate anticlockwise through the adhesive tape (a buffer mechanism can be arranged at the position of a subsequent production line, when the film is turned through the rotating roller, the rotating roller can be arranged in a movable pulley type, so that the carrier roller 41 can rotate anticlockwise to enable the film to roll back without influencing the film supply of the subsequent production line) until the film and the adhesive tape are torn off from the film fixing roller 31, resetting the film fixing roller 31 through a torsion spring 313, continuously rotating anticlockwise through the carrier roller 41 until the adhesive tape at the front end of the film is adhered to the tail of the previously sent film, and clockwise rotating the carrier roller 41 to send the film out together (waste packaging bags at the joint of the two rolls of films can be removed by carrying out subsequent die cutting on the packaging bags);

then the second driving device 33 drives the upper film frame 34 to reversely swing, the upper film roller 32 is separated from the carrier roller 41 to reset, the first driving device 21 drives the film changing frame 2 to clockwise rotate 180 degrees, two stations are changed, a worker takes off an empty reel, a new film roll is changed, then the film roll is unfolded to be laid at the film preparing mechanism 3, and the next film roll is prepared to be connected.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. The utility model provides an automatic membrane mechanism that connects of packagine machine which characterized in that: the film changing machine comprises a frame, wherein a film changing frame, a film preparing mechanism and a film conveying mechanism are arranged on the frame; more than two stations are arranged on the film changing frame along the circumferential direction in a matched manner with the film roll, and a first driving device for driving the film changing frame to rotate is arranged on the machine frame; the film preparing mechanism comprises a film fixing roller and a film feeding roller, and a second driving device for driving the film feeding roller to move to the film feeding mechanism is arranged on the rack; the film feeding mechanism comprises a carrier roller and a press roller, and a third driving device for driving the carrier roller to rotate is arranged on the rack.

2. The automatic film connecting mechanism of the packaging machine according to claim 1, wherein: two centrosymmetric stations are arranged on the film changing frame, clamping grooves are formed in the two ends of the film changing frame and matched with the film reels, and a shaft clamping mechanism capable of blocking the film reels is arranged at the clamping grooves.

3. The automatic film connecting mechanism of the packaging machine according to claim 2, wherein: the axle clamping mechanism comprises a bottom fixed wheel, a side fixed wheel and a driving wheel which are arranged around a film axle, a pressing plate is hinged to the film changing frame, the driving wheel is rotatably arranged on the pressing plate, and a clamping wheel mechanism for driving the pressing plate to rotate is arranged on the film changing frame.

4. The automatic film connecting mechanism of the packaging machine according to claim 3, wherein: the clamping wheel mechanism comprises a rotating arm and a fourth driving device, the rotating arm is hinged to the rack, the fourth driving device drives the rotating arm to rotate, a connecting rod is hinged to the rotating arm, and the other end of the connecting rod is hinged to the pressing plate.

5. The automatic film connecting mechanism of the packaging machine according to claim 1, wherein: decide the membrane roller and be hollow structure, decide the one end of membrane roller and connect evacuating device, decide and be provided with a plurality of holes of induced drafting on the membrane roller.

6. The automatic film connecting mechanism of the packaging machine according to claim 5, wherein: and a cutting groove is axially arranged on the film fixing roller.

7. The automatic film connecting mechanism of the packaging machine according to claim 1, wherein: the machine frame is provided with moving frames matched with the two ends of the compression roller, the compression roller is rotatably arranged on the moving frames, and the machine frame is provided with a fifth driving device for driving the moving frames to move up and down.

8. The automatic film connecting mechanism of the packaging machine according to claim 1, wherein: the film laminating machine is characterized in that a trigger frame is hinged to the machine frame, a trigger roller pressed on the film is arranged on the trigger frame, and a distance sensor is arranged on the machine frame and matched with the trigger frame.

9. The automatic film connecting mechanism of the packaging machine according to claim 8, wherein: the film conveying mechanism is characterized in that a film receiving positioning mechanism is arranged on the rear side of the film conveying mechanism and comprises a plurality of guide rollers, crossbearers are arranged between the guide rollers, a distance measuring device is arranged on the crossbearers, and a sixth driving device for driving the crossbearers to move up and down is arranged on the rack.