CN115848683B - Automatic change powder vacuum packaging machine - Google Patents
Automatic change powder vacuum packaging machine Download PDFInfo
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- CN115848683B CN115848683B CN202310181948.0A CN202310181948A CN115848683B CN 115848683 B CN115848683 B CN 115848683B CN 202310181948 A CN202310181948 A CN 202310181948A CN 115848683 B CN115848683 B CN 115848683B
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Abstract
The invention discloses an automatic powder vacuum packaging machine, which belongs to the technical field of powder packaging machines, and comprises a control system, a feeding mechanism, a lower packaging film conveying mechanism, a hot melting sealing cutting device, an upper packaging film conveying mechanism and an automatic discharging table, wherein the feeding mechanism, the lower packaging film conveying mechanism, the hot melting sealing cutting device, the upper packaging film conveying mechanism and the automatic discharging table are electrically connected with the control system, the fixed weight of powder is output through the fixed frequency of the feeding mechanism, the lower packaging film conveying mechanism automatically conveys the lower packaging film, the lower packaging film on a packaging film adsorption supporting device bears the output powder, the upper packaging film is pushed to the lower packaging film by the hot melting sealing cutting device to be extruded, hot melted and cut off to form a vacuum packaging bag filled with the powder.
Description
Technical Field
The invention belongs to the technical field of powder packaging machines, and particularly relates to an automatic powder vacuum packaging machine.
Background
The powder products are various, and can relate to a plurality of industries such as industrial mineral powder, food, agricultural and sideline products and the like, and relate to various products such as milk powder, starch, pesticides, veterinary drugs, premix, feed and the like; industrial mineral fines, such as: calcium carbonate, talcum powder, graphite powder, kaolin, calcium hydroxide, light calcium carbonate and coal dust.
In the powder vacuum packaging machine in the prior art, a manual packaging mode or a semi-automatic packaging mode is mostly adopted when powder is packaged, the semi-automatic packaging mode is mainly that a first hand is used for filling, feeding bags and the like, then the powder is manually placed into a vacuum chamber for vacuumizing, more manpower is needed during operation, meanwhile, the environment of powder packaging is needed to be in a sealed working room, external dust is reduced, and meanwhile, the temperature of the powder is reduced through an air conditioner in the working room, after the powder is packaged, the weight of each bag of powder is measured, partial powder with deviation is manually added or taken out from the bag, and the semi-automatic packaging mode has low working efficiency and high labor cost, and has severe working environment of workers and great influence on body health.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide an automatic powder vacuum packaging machine, which solves the problems that the existing powder vacuum packaging machine is mostly in a semi-automatic packaging mode, powder packaging needs manual operation, so that the powder packaging efficiency is low and the health of a packer is endangered.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the automatic powder vacuum packaging machine comprises a control system, a feeding mechanism, a packaging lower film conveying mechanism, a hot melt seal cutting device, a packaging upper film conveying mechanism and an automatic discharging table, wherein the feeding mechanism, the packaging lower film conveying mechanism, the hot melt seal cutting device, the packaging upper film conveying mechanism and the automatic discharging table are electrically connected with the control system;
the feeding mechanism comprises a discharging cabin, a powder feeding hole is formed in the top of the discharging cabin, a discharging hole is formed in the bottom of the discharging cabin, a screw feeding device for outputting powder to the discharging hole is arranged in the discharging cabin, a weighing discharging device is connected to the bottom of the screw feeding device, and the weighing discharging device is used for weighing the powder in the discharging hole in real time and outputting the powder with fixed weight to the packaging lower film conveying mechanism at a certain frequency;
the packaging lower film conveying mechanism comprises an unreeling roller and a reeling roller which are arranged at intervals, and packaging lower films are wound on the unreeling roller and the reeling roller; the packaging lower film is positioned right below the weighing and discharging device;
a packaging film adsorption supporting device and an automatic unloading table are arranged between the unreeling roller and the reeling roller, the packaging film adsorption supporting device comprises two rotary drums which are arranged at intervals, a coiled plate is arranged on the two rotary drums, a plurality of adsorption holes are formed in the coiled plate in a penetrating mode, a negative pressure chamber is fixedly arranged under the coiled plate, and the packaging lower film is adsorbed and attached to the upper surface of the coiled plate through the negative pressure chamber and the adsorption holes;
the hot-melt sealing cutting device and the packaging upper film conveying mechanism are arranged at the side of the rolling plate in the moving direction, and are both positioned at the top of the packaging lower film; the packaging upper film conveying mechanism is used for conveying the packaging upper film to the hot-melt sealing and cutting device, and the hot-melt sealing and cutting device is used for pushing the packaging upper film to the packaging lower film for extrusion, hot melting and cutting to form a vacuum packaging bag filled with powder; the length and the width of the vacuum packaging bag are smaller than the width of the lower packaging film; the automatic discharging table is used for discharging the vacuum packaging bag filled with the powder.
Further, as a concrete setting mode of the screw feeding device, the screw feeding device comprises a rotating motor which is arranged at the top of the discharging cabin and is electrically connected with the control system, a spiral feeding shaft is connected to an output shaft of the rotating motor through a coupling, the spiral feeding shaft penetrates through the discharging cabin to be positioned in the discharging port, and the diameter of the spiral feeding shaft is matched with that of the discharging port.
Further, as a specific setting mode of the weighing and discharging device, the weighing and discharging device comprises a mounting box arranged at the bottom of the discharging hole, a discharging channel is arranged in the mounting box, one end of the discharging channel is fixedly connected with the discharging hole, the other end of the discharging channel is positioned at the top of the lower packaging film, and a transverse notch is arranged in the middle of the discharging channel;
a linear motor is transversely arranged in the mounting box, the output end of the linear motor is provided with a switch plate, the switch plate is arranged in the transverse notch, the upper end face of the switch plate is provided with a weighing plate, a weight sensor is integrated in the weighing plate, and the cross sectional areas of the switch plate and the weighing plate are matched with the cross sectional area of the discharging channel;
and the linear motor and the weight sensor are electrically connected with the control system.
Further, as a specific setting mode of the coiled plate, the coiled plate comprises a plurality of hard plates, two adjacent hard plates are fixedly connected through a connecting soft plate, and reinforcing ribs for connecting the two adjacent hard plates are arranged in the connecting soft plate; a plurality of adsorption holes are formed in each hard plate;
the circumference outer wall of two the rotary drums is provided with a chain plate, and the inner surface of the coiled plate is provided with a clamping groove matched with the chain plate.
Further, in order to avoid that powder is accumulated and not concentrated when the powder is packed, the vacuum packing effect is not ideal, each hard plate is provided with a fixing groove, the bottom of each fixing groove is provided with a plurality of adsorption holes, and the size of the fixing groove is smaller than that of the vacuum packing bag.
Further, as a specific setting mode of the packaging upper film conveying mechanism, the packaging upper film conveying mechanism comprises a first roll shaft and a second roll shaft, and a packaging upper film is wound between the first roll shaft and the second roll shaft; the hot melt seal cutting device is arranged between the first roll shaft and the second roll shaft.
Further, as an embodiment of the hot melt seal cutting device, the hot melt seal cutting device comprises a telescopic cylinder arranged between the first roll shaft and the second roll shaft, the tail end of the telescopic cylinder is fixed, the piston end of the telescopic cylinder is arranged downwards, an extrusion push rod is arranged at the piston end of the telescopic cylinder, a flexible extrusion block is arranged at the lower end of the extrusion push rod, and the shape of the flexible extrusion block is matched with that of the fixed groove; the hot-melt sleeve is movably sleeved on the outer walls around the extrusion push rod, an electric heating ring is arranged on the end face of the lower end of the hot-melt sleeve, and the end face position of the electric heating ring is lower than the lower end face position of the flexible extrusion block; a limiting block used for contacting with the upper end surface of the hot melting sleeve is fixedly arranged on the circumferential outer wall of the extrusion push rod; after the flexible extrusion block completely compresses the powder in the fixed groove, the limiting block is contacted with the upper end surface of the hot melting sleeve;
a circle of closed cutting piece is arranged on the outer wall of the hot melting sleeve, and a V-shaped groove with a downward opening is arranged on the lower end surface of the cutting piece;
the periphery of the fixed groove is provided with a circle of cutting edges matched with the V-shaped groove, and the cutting edges of the cutting edges face upwards vertically;
the hydraulic control system and the electric heating ring of the telescopic cylinder are electrically connected with the control system, and the control system is used for controlling the extension of the piston end of the telescopic cylinder at intervals and controlling the start and stop of the electric heating ring at intervals.
Further, the flexible extrusion block and the cutting piece are made of rubber.
Further, in order to improve the adsorption effect of the negative pressure chamber, the packaging upper film is adsorbed and attached to the upper surface of the coiled plate, so that the packaging upper film is prevented from sliding, a circle of flexible sealing strips are arranged at the top opening of the negative pressure chamber, and the upper end surfaces of the flexible sealing strips are in contact with the inner surface of the coiled plate; the width of the opening at the top of the negative pressure chamber is smaller than the width of the coiled plate.
Further, in order to automatically discharge the vacuum packaging bag filled with powder, the automatic discharging platform is positioned at one side of the rolling plate moving direction, the automatic discharging platform is a belt conveyor, the position height of the automatic discharging platform is smaller than that of the rolling plate, and the moving direction of the automatic discharging platform is perpendicular to the rolling plate moving direction.
The beneficial effects of the invention are as follows: according to the automatic powder vacuum packaging machine, powder with fixed weight is output through setting a feeding mechanism at a certain frequency, the packaging lower film conveying mechanism automatically conveys the packaging lower film, the packaging lower film on the packaging film adsorption supporting device bears the output powder, the hot melting sealing cutting device pushes the packaging upper film to the packaging lower film to extrude, hot melt and cut off the packaging lower film to form a vacuum packaging bag filled with the powder, and the vacuum packaging work of the powder is completed.
Drawings
Fig. 1 is a schematic structural view of an automatic powder vacuum packing machine.
Fig. 2 is a schematic view of a structure in which the screw feeding device is disposed in the discharge compartment.
Fig. 3 is a schematic view of the internal structure of the weighing and discharging device.
Fig. 4 is a schematic structural view of the adsorption supporting device for packaging film.
Fig. 5 is a schematic plan view of the rolled sheet.
Fig. 6 is a schematic view of the internal structure of the hot-melt seal cutting device.
Fig. 7 is a schematic structural view of a film feeding mechanism for package.
1, a control system; 2. a feeding mechanism; 201. a discharge cabin; 202. a powder feed port; 203. a discharge port; 204. a screw feeding device; 2041. a rotating electric machine; 2042. a coupling; 2043. a spiral feeding shaft; 205. a weighing and discharging device; 2051. a mounting box; 2052. a discharge channel; 2053. a transverse incision; 2054. a linear motor; 2055. a switch board; 2056. a weighing plate; 3. a packaging lower film conveying mechanism; 301. an unreeling roller; 302. a winding roller; 4. a hot melt seal cutting device; 401. a telescopic cylinder; 402. extruding the push rod; 403. a flexible extrusion block; 404. a hot melt sleeve; 405. an electric heating ring; 406. a limiting block; 407. cutting off the piece; 408. a V-shaped groove; 409. a blade; 5. packaging and film feeding conveying mechanisms; 501. a first roller shaft; 502. a second roller shaft; 6. an automatic discharging table; 7. packaging and removing a film; 8. a packaging film adsorption supporting device; 801. a rotating drum; 802. rolling plate; 8021. a hard plate; 8022. connecting the soft board; 9. adsorption holes; 10. a negative pressure chamber; 11. packaging and coating a film; 12. a fixing groove; 13. a flexible sealing strip.
Description of the embodiments
The following description of the embodiments of the present invention is provided to facilitate understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and all the inventions which make use of the inventive concept are protected by the spirit and scope of the present invention as defined and defined in the appended claims to those skilled in the art.
As shown in fig. 1 to 7, the embodiment provides an automatic powder vacuum packaging machine, which comprises a control system 1, a feeding mechanism 2, a packaging lower film conveying mechanism 3, a hot melt sealing cutting device 4, a packaging upper film conveying mechanism 5 and an automatic discharging table 6, wherein the feeding mechanism 2, the packaging lower film conveying mechanism 3, the hot melt sealing cutting device 4, the packaging upper film conveying mechanism 5 and the automatic discharging table 6 are electrically connected with the control system 1.
The control system 1 may employ a PLC controller, and the installation position of the control system 1 may be installed on the feeding mechanism 2 or other positions, and is not particularly limited in this embodiment.
As shown in fig. 1 and 2, the feeding mechanism 2 comprises a discharge bin 201, a powder feed port 202 is arranged at the top of the discharge bin 201, a discharge port 203 is arranged at the bottom of the discharge bin 201, a screw feeding device 204 for outputting powder to the discharge port 203 is arranged in the discharge bin 201,
preferably, but not limited to, as shown in fig. 2, as a specific arrangement mode of the screw feeding device 204, the screw feeding device 204 includes a rotating motor 2041 disposed at the top of the discharge bin 201 and electrically connected to the control system 1, an output shaft of the rotating motor 2041 is connected to a screw feeding shaft 2043 through a coupling 2042, the screw feeding shaft 2043 passes through the discharge bin 201 and is located in the discharge hole 203, and a diameter of the screw feeding shaft 2043 is matched with a diameter of the discharge hole 203. The rotating motor 2041 is started by the control system 1 to drive the spiral feeding shaft 2043 to rotate, so that powder in the discharge cabin 201 is screwed into the discharge hole 203, and the powder conveniently enters the weighing and discharging device 205 through the discharge hole 203.
As shown in fig. 1 and 3, a weighing and unloading device 205 is connected to the bottom of the screw feeding device 204, and the weighing and unloading device 205 is used for weighing the powder in the discharge hole 203 in real time and outputting the powder with a fixed weight to the packaging lower film conveying mechanism 3 at a certain frequency.
Preferably, but not limited to, as a specific arrangement mode of the weighing and discharging device 205, the weighing and discharging device 205 includes a mounting box 2051 disposed at the bottom of the discharging hole 203, a discharging channel 2052 is disposed in the mounting box 2051, one end of the discharging channel 2052 is fixedly connected with the discharging hole 203, the other end is located at the top of the lower packaging film 7, and a transverse notch 2053 is disposed in the middle of the discharging channel 2052.
A linear motor 2054 is transversely arranged in the mounting box 2051, a switch plate 2055 is arranged at the output end of the linear motor 2054, the switch plate 2055 is arranged in the transverse cut 2053, a weighing plate 2056 is arranged on the upper end surface of the switch plate 2055, a weight sensor is integrated in the weighing plate 2056, and the cross sectional areas of the switch plate 2055 and the weighing plate 2056 are matched with the cross sectional area of the discharging channel 2052; the linear motor 2054 and the weight sensor are electrically connected to the control system 1.
Powder discharged from the discharge port 203 is piled on the weighing plate 2056 through the discharge channel 2052, the linear motor 2054 drives the switch plate 2055 and the weighing plate 2056 to extend or retract in the transverse notch 2053, so that the powder is discharged on and off in the discharge channel 2052, meanwhile, the weight sensor in the weighing plate 2056 weighs the powder on the weighing plate 2056 in real time, when the powder on the weighing plate 2056 reaches the preset weight, the linear motor 2054 drives the switch plate 2055 and the weighing plate 2056 to retract, the transverse notch 2053 is opened, the powder with the fixed weight is conveyed into the packaging lower film conveying mechanism 3, and the next procedure is performed.
As shown in fig. 1, the lower packaging film conveying mechanism 3 comprises an unreeling roller 301 and a reeling roller 302 which are arranged at intervals, and the lower packaging film 7 is wound on the unreeling roller 301 and the reeling roller 302; the lower packaging film 7 is positioned right below the weighing and discharging device 205;
the packaging film adsorption supporting device 8 and the automatic unloading table 6 are arranged between the unreeling roller 301 and the reeling roller 302, the packaging film adsorption supporting device 8 comprises two rotary drums 801 which are arranged at intervals, a coiled plate 802 is arranged on the two rotary drums 801, a plurality of adsorption holes 9 are formed in the coiled plate 802 in a penetrating mode, a negative pressure chamber 10 is fixedly arranged under the coiled plate 802, the packaging lower film 7 is adsorbed and attached to the upper surface of the coiled plate 802 through the negative pressure chamber 10 and the adsorption holes 9, and displacement of the packaging lower film 7 on the upper surface of the coiled plate 802 is avoided.
Specifically, in order to improve the adsorption effect of the negative pressure chamber 10, the packaging lower film 7 is adsorbed and attached to the upper surface of the coiled plate 802, so that the packaging lower film 7 is prevented from sliding, a circle of flexible sealing strips are arranged at the top opening of the negative pressure chamber 10, and the upper end surfaces of the flexible sealing strips are in contact with the inner surface of the coiled plate 802; the width of the top opening of the negative pressure chamber 10 is smaller than the width of the rolled sheet 802. The arrangement of the flexible sealing strip does not form hard interference with the inner surface of the running coiled plate 802, and the condition of unsatisfactory negative pressure effect caused by excessive external air entering the negative pressure chamber 10 can be avoided.
Specifically, as shown in fig. 4 and fig. 5, as a specific arrangement mode of the coiled plate 802, the coiled plate 802 includes a plurality of hard plates 8021, two adjacent hard plates 8021 are fixedly connected through a connecting soft plate 8022, and a reinforcing rib for connecting two adjacent hard plates 8021 is arranged in the connecting soft plate 8022; a plurality of adsorption holes 9 are formed in each hard plate 8021; the bending of the coiled plate 802 can be realized by arranging the coiled plate 802 in a mode that a plurality of hard plates 8021 and hard plates 8021 are connected through a soft connecting plate 8022, so that the coiled plate 802 can circularly move, and the continuous conveying of the packaging lower film 7 can be realized; second, the arrangement of the hard plate 8021 can realize the cooperation with the hot-melt seal cutting device 4, so that the hot-melt seal cutting device 4 performs extrusion, hot-melt and cutting processes on the lower packaging film 7 and the upper packaging film 11 on the hard plate 8021, and if the hard plate 8021 is set as a soft plate, the above-mentioned processes cannot be realized.
The outer walls of the circumferences of the two drums 801 are provided with chain plates, and the inner surfaces of the rolling plates 802 are provided with clamping grooves matched with the chain plates. The cooperation of chain dish and draw-in groove realizes that two rotary drums 801 drive to roll up board 802 motion work, avoids rolling up board 802 and the rotary drum 801 to appear skidding the phenomenon.
Preferably, each hard plate 8021 is provided with a fixing groove 12, the bottom of each fixing groove 12 is provided with a plurality of adsorption holes 9, and the size of the fixing groove 12 is smaller than that of the vacuum packaging bag. The fixing groove 12 is equivalent to providing an initial accommodating space for the powder to be packaged and sealed on the upper surface of the packaging lower film 7, so that the hot melt seal cutting device 4 can be positioned and extruded to form vacuum.
As shown in fig. 6, the hot-melt seal cutting device 4 and the packaging upper film conveying mechanism 5 are arranged on the moving direction side of the coiled plate 802, and the hot-melt seal cutting device 4 and the packaging upper film conveying mechanism 5 are both positioned on the top of the packaging lower film 7; the packaging upper film conveying mechanism 5 is used for conveying the packaging upper film 11 to the hot-melt sealing and cutting device 4, and the hot-melt sealing and cutting device 4 is used for pushing the packaging upper film 11 to the packaging lower film 7 for extrusion, hot melting and cutting to form a vacuum packaging bag filled with powder; the length and the width of the vacuum packaging bag are smaller than the width of the lower packaging film 7; the automatic discharging table 6 is used for discharging the vacuum packaging bag filled with the powder.
The automatic powder vacuum packaging machine in this embodiment outputs the powder with fixed weight through setting up the certain frequency of feed mechanism 2, and film conveying mechanism 3 carries out automatic transport under the packing to film 7 under the packing, and film 7 bears the powder of output under the packing on the film adsorption support device 8, and hot melt seal cutting device 4 pushes the upper packaging film 11 to film 7 under the packing and extrudees, hot melt and cuts off the vacuum packaging bag that forms the powder that is equipped with, accomplishes the vacuum packaging work of powder.
Specifically, as shown in fig. 1 and 7, the package upper film conveying mechanism 5 includes a first roller 501 and a second roller 502 with the package upper film 11 wound between the first roller 501 and the second roller 502; a hot melt seal cutting device 4 is provided between the first roller shaft 501 and the second roller shaft 502.
The hot melt seal cutting device 4 comprises a telescopic cylinder 401 arranged between a first roll shaft 501 and a second roll shaft 502, the tail end of the telescopic cylinder 401 is fixed, the piston end of the telescopic cylinder 401 is arranged downwards, an extrusion push rod 402 is arranged on the piston end of the telescopic cylinder 401, a flexible extrusion block 403 is arranged at the lower end of the extrusion push rod 402, and the shape of the flexible extrusion block 403 is matched with that of the fixed groove 12; the hot melt sleeve 404 is movably sleeved on the outer wall of the periphery of the extrusion push rod 402, specifically, a limit bar can be arranged on the outer wall of the extrusion push rod 402, the length of the limit bar is smaller than that of the extrusion push rod 402, the bottom of the limit bar is aligned with the lower end face of the extrusion push rod 402, and the top of the limit bar is positioned in the middle of the outer wall of the extrusion push rod 402;
the inner wall of the hot-melt sleeve 404 is provided with a sliding groove, the length of the sliding groove is also smaller than that of the hot-melt sleeve 404, the bottom end of the sliding groove is aligned with the lower end face of the hot-melt sleeve 404, the top end of the sliding groove is positioned in the middle of the inner wall of the hot-melt sleeve 404, and the sliding groove is in sliding fit with a limit bar, so that the movable fit between the hot-melt sleeve 404 and the extrusion push rod 402 is realized, which is only one sliding connection mode, and the specific limitation is not made in the embodiment; an electric heating ring 405 is arranged on the lower end face of the hot melting sleeve 404, and the end face position of the electric heating ring 405 is lower than the lower end face position of the flexible extrusion block 403; a limiting block 406 for contacting with the upper end surface of the hot melting sleeve 404 is fixedly arranged on the circumferential outer wall of the extrusion push rod 402; after the flexible extrusion block 403 completely compresses the powder in the fixed slot 12, the limiting block 406 contacts with the upper end surface of the hot melting sleeve 404;
the outer wall of the hot melting sleeve 404 is provided with a circle of closed cutting member 407, and the lower end surface of the cutting member 407 is provided with a V-shaped groove 408 with a downward opening. The periphery of the fixed groove 12 is provided with a circle of cutting edges 409 matched with the V-shaped groove 408, and the cutting edges of the cutting edges 409 face upwards vertically.
In this embodiment, the cross-sectional shapes of the flexible extrusion block 403, the fixing groove 12, the hot-melt bushing 404, the electric heating coil 405, and the like may be rectangular structures or circular structures, and may be selected according to the specific requirements of production, and are not particularly limited herein.
When the flexible extrusion block 403 extrudes powder, because no hot melt is pressed between the upper packaging film 11 and the lower packaging film 7, air in the powder can be discharged through a gap between the upper packaging film 11 and the lower packaging film 7, after the flexible extrusion block 403 completely compresses the powder in the fixed groove 12, the extrusion push rod 402 continues to move downwards, meanwhile, because the limiting block 406 contacts with the upper end face of the hot melt sleeve 404, the extrusion push rod 402 enables the hot melt sleeve 404 and the electric heating ring 405 at the end of the hot melt sleeve to thermally melt and press the upper packaging film 11 and the lower packaging film 7, and simultaneously, the V-shaped groove 408 continues to move downwards to be matched with the cutting edge 409 to cut the upper packaging film 11 and the lower packaging film 7, so that a vacuum packaging bag filled with the powder is formed, the length and the width of the vacuum packaging bag are smaller than the width of the lower packaging film 7, continuous film strips remain on the upper packaging film 11 and the lower packaging film 7, similar to sealing films on the milk tea packaging machine, and the upper packaging film conveying mechanism 5 and the lower packaging film conveying mechanism 3 can realize continuous conveying of the upper packaging film 11 and the lower packaging film 7 through the film strips.
The hydraulic control system 1 and the electric heating ring 405 of the telescopic cylinder 401 are electrically connected with the control system 1, and the control system 1 is used for controlling the extension of the piston end of the telescopic cylinder 401 at intervals and controlling the start and stop of the electric heating ring 405 at intervals. The material of the flexible extrusion block 403 and the cutting member 407 is rubber.
The automatic discharging table 6 is positioned at one side of the movement direction of the coiled plate 802, the automatic discharging table 6 is a belt conveyor, the position height of the automatic discharging table 6 is smaller than the position height of the coiled plate 802, and the movement direction of the automatic discharging table 6 is perpendicular to the movement direction of the coiled plate 802. The automatic discharging table 6 automatically discharges the vacuum packing bag filled with the powder.
In this embodiment, the unreeling roller 301, the reeling roller 302, the first roller shaft 501, the second roller shaft 502 and the two drums 801 are driven to rotate by motors, and the motors driving the above components are electrically connected with the control system 1, so that the motors are controlled to stop or rotate by the control system 1, and further the packaging upper film 11 or the packaging lower film 7 is driven to realize continuous conveying.
The specific working process of the automatic powder vacuum packaging machine comprises the following steps:
firstly, a worker pours powder into the discharge cabin 201 through the powder feed port 202, then the control system 1 controls the rotary motor 2041 in the screw feeding device 204 to work, the rotary motor 2041 drives the screw feeding shaft 2043 to rotate to send the powder to the weighing plate 2056 in the weighing and discharging device 205, when the powder on the weighing plate 2056 reaches the preset weight, the rotary motor 2041 stops working, the powder is stopped to be continuously sent to the weighing and discharging device 205, meanwhile, the linear motor 2054 drives the switch plate 2055 and the weighing plate 2056 to retract, the transverse cut 2053 is opened, the powder with fixed weight is put on the upper surface of the packaging lower film 7 in the packaging lower film conveying mechanism 3 through the bottom end of the discharging channel 2052, and because the powder has a certain weight, the bottom end of the discharging channel 2052 is limited to be aligned with the fixed groove 12 on the rolling plate 802, and the powder is further pre-stored in the fixed groove 12.
The lower packaging film 7 is always clung to the upper surface of the coiled plate 802 under the action of the negative pressure chamber 10 and the adsorption empty, the coiled plate 802 drives the lower packaging film 7 to move towards the hot-melt sealing and cutting device 4 under the action of the two rotary drums 801, when the fixed groove 12 moves to the position right below the hot-melt sealing and cutting device 4, the upper packaging film conveying mechanism 5 outputs the upper packaging film 11 to the position below the hot-melt sealing and cutting device 4, the control system 1 controls the telescopic cylinder 401 to drive the extrusion push rod 402, the flexible extrusion block 403, the hot-melt sleeve 404, the cutting edge 409 and the upper packaging film 11 to move downwards, the flexible extrusion block 403 is matched with the fixed groove 12 to completely extrude air in powder, and the electric heating ring 405 on the hot-melt sleeve 404 extrudes and seals the lower packaging film 7 and the upper packaging film 11, and simultaneously the V-shaped groove 408 on the outer wall of the hot-melt sleeve 404 is matched with the cutting edge 409 to realize cutting of the lower packaging film 7 and the upper packaging film 11, so that vacuum packaging bags filled with powder are formed; the vacuum packaging bag filled with powder continues to move along with the coiled plate 802 until entering the automatic discharging table 6, and automatic packaging work of the powder is completed.
It should be noted that, in the present embodiment, the selection of the components such as the control system 1, the rotating electric machine 2041, the linear motor 2054, the weight sensor, the electric heating coil 405, and the like, and the internal structure thereof are all the prior art, and the working principle of each component and the specific connection relationship between the components are not specifically defined herein.
Claims (6)
1. An automatic powder vacuum packaging machine is characterized by comprising a control system, a feeding mechanism, a packaging lower film conveying mechanism, a hot melt seal cutting device, a packaging upper film conveying mechanism and an automatic discharging table, wherein the feeding mechanism, the packaging lower film conveying mechanism, the hot melt seal cutting device, the packaging upper film conveying mechanism and the automatic discharging table are electrically connected with the control system;
the feeding mechanism comprises a discharging cabin, a powder feeding hole is formed in the top of the discharging cabin, a discharging hole is formed in the bottom of the discharging cabin, a screw feeding device for outputting powder to the discharging hole is arranged in the discharging cabin, a weighing discharging device is connected to the bottom of the screw feeding device, and the weighing discharging device is used for weighing the powder in the discharging hole in real time and outputting the powder with fixed weight to the packaging lower film conveying mechanism at a certain frequency;
the packaging lower film conveying mechanism comprises an unreeling roller and a reeling roller which are arranged at intervals, and packaging lower films are wound on the unreeling roller and the reeling roller; the packaging lower film is positioned right below the weighing and discharging device;
a packaging film adsorption supporting device and an automatic unloading table are arranged between the unreeling roller and the reeling roller, the packaging film adsorption supporting device comprises two rotary drums which are arranged at intervals, a coiled plate is arranged on the two rotary drums, a plurality of adsorption holes are formed in the coiled plate in a penetrating mode, a negative pressure chamber is fixedly arranged under the coiled plate, and the packaging lower film is adsorbed and attached to the upper surface of the coiled plate through the negative pressure chamber and the adsorption holes;
the coiled plate comprises a plurality of hard plates, two adjacent hard plates are fixedly connected through a connecting soft plate, and reinforcing ribs for connecting the two adjacent hard plates are arranged in the connecting soft plate; a plurality of adsorption holes are formed in each hard plate;
the outer walls of the circumferences of the two drums are provided with chain plates, and the inner surface of the coiled plate is provided with a clamping groove matched with the chain plates;
the hot-melt sealing cutting device and the packaging upper film conveying mechanism are arranged at the side of the rolling plate in the moving direction, and are both positioned at the top of the packaging lower film; the packaging upper film conveying mechanism is used for conveying the packaging upper film to the hot-melt sealing and cutting device, and the hot-melt sealing and cutting device is used for pushing the packaging upper film to the packaging lower film for extrusion, hot melting and cutting to form a vacuum packaging bag filled with powder;
each hard plate is provided with a fixing groove, the bottom of each fixing groove is provided with a plurality of adsorption holes, and the size of each fixing groove is smaller than that of the vacuum packaging bag;
the packaging upper film conveying mechanism comprises a first roll shaft and a second roll shaft, and the packaging upper film is wound between the first roll shaft and the second roll shaft; the hot melt seal cutting device is arranged between the first roll shaft and the second roll shaft;
the hot melt sealing and cutting device comprises a telescopic cylinder arranged between the first roll shaft and the second roll shaft, the tail end of the telescopic cylinder is fixed, the piston end of the telescopic cylinder is arranged downwards, an extrusion push rod is arranged at the piston end of the telescopic cylinder, a flexible extrusion block is arranged at the lower end of the extrusion push rod, and the shape of the flexible extrusion block is matched with that of the fixed groove; the hot-melt sleeve is movably sleeved on the outer walls around the extrusion push rod, an electric heating ring is arranged on the end face of the lower end of the hot-melt sleeve, and the end face position of the electric heating ring is lower than the lower end face position of the flexible extrusion block; a limiting block used for contacting with the upper end surface of the hot melting sleeve is fixedly arranged on the circumferential outer wall of the extrusion push rod; after the flexible extrusion block completely compresses the powder in the fixed groove, the limiting block is contacted with the upper end surface of the hot melting sleeve;
a circle of closed cutting piece is arranged on the outer wall of the hot melting sleeve, and a V-shaped groove with a downward opening is arranged on the lower end surface of the cutting piece;
the periphery of the fixed groove is provided with a circle of cutting edges matched with the V-shaped groove, and the cutting edges of the cutting edges face upwards vertically;
the hydraulic control system and the electric heating ring of the telescopic cylinder are electrically connected with the control system, and the control system is used for controlling the extension of the piston end of the telescopic cylinder at intervals and controlling the start and stop of the electric heating ring at intervals;
the length and the width of the vacuum packaging bag are smaller than the width of the lower packaging film; the automatic discharging table is used for discharging the vacuum packaging bag filled with the powder.
2. The automated powder vacuum packaging machine of claim 1, wherein the screw feeding device comprises a rotating motor arranged at the top of the discharge bin and electrically connected with the control system, wherein an output shaft of the rotating motor is connected with a screw feeding shaft through a coupling, the screw feeding shaft penetrates through the discharge bin and is positioned in the discharge hole, and the diameter of the screw feeding shaft is matched with the diameter of the discharge hole.
3. The automatic powder vacuum packaging machine according to claim 2, wherein the weighing and discharging device comprises a mounting box arranged at the bottom of the discharging hole, a discharging channel is arranged in the mounting box, one end of the discharging channel is fixedly connected with the discharging hole, the other end of the discharging channel is positioned at the top of the packaging lower film, and a transverse notch is arranged in the middle of the discharging channel;
a linear motor is transversely arranged in the mounting box, the output end of the linear motor is provided with a switch plate, the switch plate is arranged in the transverse notch, the upper end face of the switch plate is provided with a weighing plate, a weight sensor is integrated in the weighing plate, and the cross sectional areas of the switch plate and the weighing plate are matched with the cross sectional area of the discharging channel;
and the linear motor and the weight sensor are electrically connected with the control system.
4. The automated powder vacuum packaging machine of claim 1, wherein the flexible squeeze block and cut-out are both rubber.
5. The automatic powder vacuum packaging machine according to claim 1, wherein a circle of flexible sealing strips is arranged at the top opening of the negative pressure chamber, and the upper end face of the flexible sealing strips is in contact with the inner surface of the coiled plate; the width of the opening at the top of the negative pressure chamber is smaller than the width of the coiled plate.
6. The automated powder vacuum packaging machine of claim 5, wherein the automatic discharge table is positioned on one side of the direction of motion of the rolled sheet, the automatic discharge table is a belt conveyor, the height of the automatic discharge table is less than the height of the rolled sheet, and the direction of motion of the automatic discharge table is perpendicular to the direction of motion of the rolled sheet.
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