CN110683115A

CN110683115A - Automatic vacuum packaging machine

Info

Publication number: CN110683115A
Application number: CN201911106888.6A
Authority: CN
Inventors: 郑雨芳
Original assignee: Taizhou Vocational and Technical College
Current assignee: Taizhou Hite Automatic Control Technology Co ltd
Priority date: 2019-11-13
Filing date: 2019-11-13
Publication date: 2020-01-14
Anticipated expiration: 2039-11-13
Also published as: CN110683115B

Abstract

The invention discloses an automatic vacuum packaging machine, which comprises a main body assembly, a conveying assembly and a packaging assembly, wherein the main body assembly comprises a main body and a conveying assembly; the main body assembly comprises a main rack, a main bedplate, side frames and a middle frame; the main bedplate is horizontally arranged at the upper part of the main bedplate; the side frame is arranged on the side surface of the main bedplate; the middle frame is covered at the rear end of the main bedplate; the conveying assembly comprises a discharging rotating shaft, a discharging motor, an auxiliary rotating shaft, a trough, a first rotating disc device, a second rotating disc device, a first discharging rotating shaft, a second discharging rotating shaft, a discharging conveying belt and a discharging motor; the discharging rotating shaft is horizontally and rotationally connected to the side frame; the discharging rotating shaft is positioned below the main bedplate and close to the front end of the main bedplate; the discharging motor is in driving connection with the discharging rotating shaft; the automatic vacuum packaging machine provided by the invention can realize automatic and continuous vacuum packaging without using a mould, has the advantages of less manual operation, simple structure and low production cost, and has better practicability and popularization.

Description

Automatic vacuum packaging machine

Technical Field

The invention relates to the field of packaging instruments, in particular to an automatic vacuum packaging machine.

Background

Most of the existing food packages require vacuum packaging to prevent mildewing, and play a role in quality guarantee and freshness preservation; however, the existing food vacuum packaging machines are mainly divided into two types, one type is a common vacuum chamber type packaging machine, the working principle of the machine is that food is bagged, then a bag is placed in a vacuum chamber, vacuum is extracted, and then the food bag is subjected to heat sealing, and the machine has the advantages of simple structure, low price and low automation degree, and has the defects of complicated manual operation; the other type is a continuous vacuum packaging machine, the working principle of the machine is that food is put into a mould, and then the upper part and the lower part of the mould are coated with films so as to achieve the purpose of continuous automatic vacuum packaging; the machine has the advantages of high automation degree and less manual operation, and has the defects of complex structure, high price and requirement of matched molds.

By combining the two vacuum packaging machines, an automatic vacuum packaging machine which is high in automation degree, simple in structure and low in price is required in the market at present.

Disclosure of Invention

The invention mainly aims to provide an automatic vacuum packaging machine, and aims to solve the problem that an automatic vacuum packaging machine which is high in automation degree, simple in structure and low in price is needed in the market at present.

In order to achieve the purpose, the technical scheme provided by the invention is as follows:

an automatic vacuum packaging machine comprises a main body assembly, a conveying assembly and a packaging assembly; the main body assembly comprises a main rack, a main bedplate, side frames and a middle frame; the main bedplate is horizontally arranged at the upper part of the main rack; the side frames are arranged on the side surfaces of the main bedplate; the middle frame is covered at the rear end of the main bedplate;

the conveying assembly comprises a discharging rotating shaft, a discharging motor, an auxiliary rotating shaft, a trough, a first rotating disc device, a second rotating disc device, a first discharging rotating shaft, a second discharging rotating shaft, a discharging conveying belt and a discharging motor;

the discharging rotating shaft is horizontally and rotatably connected to the side frame; the discharging rotating shaft is positioned below the main bedplate and close to the front end of the main bedplate; the discharging motor is in driving connection with the discharging rotating shaft; the trough is a U-shaped trough; the material groove is arranged in the middle of the main bedplate; the auxiliary rotating shaft is arranged at the front end of the main bedplate;

the discharging conveyer belt is embedded in the main bedplate and is positioned behind the material groove; the upper surface of the conveying belt and the upper surface of the main bedplate are positioned on the same plane; the discharging conveying belt is sleeved between the first discharging rotating shaft and the second discharging rotating shaft; the discharging motor is connected with the first discharging rotating shaft in a driving way;

the first rotating disc device and the second rotating disc device are both connected to the side frame and are both positioned above the main bedplate; the first rotary disc device comprises a first main rotary disc, a first slave rotary disc and a first motor; the first main rotating disc and the first auxiliary rotating disc are positioned on the same horizontal plane and are attached to each other; a circle of rubber layer is arranged around the edges of the first main rotary disc and the first auxiliary rotary disc; the first motor is in driving connection with the first main turntable;

the second rotary table device comprises a second main rotary table, a second slave rotary table and a second motor; the second main rotating disc and the second slave rotating disc are positioned on the same horizontal plane and are attached to each other; a circle of rubber layer is arranged at the edge of the second main turntable and the edge of the second auxiliary turntable in a surrounding manner; the second motor is in driving connection with the second main turntable;

the binding surface between the first main rotating disc and the first slave rotating disc and the binding surface between the second main rotating disc and the second slave rotating disc are positioned on the same vertical plane, and the same vertical plane is superposed with the central line of the trough in the length direction;

the packaging assembly comprises a longitudinal heat sealer, a first bottom heat seal, a second bottom heat seal, a first upper heat seal, a second upper heat seal, a middle cutter, a vacuum suction nozzle, a vacuum tube and a vacuum pump;

the longitudinal heat sealer is connected to the side frame and located between the first turntable device and the second turntable device; the longitudinal heat sealer includes a primary heat seal block and a secondary heat seal block; the main heat sealing block and the auxiliary heat sealing block can be relatively attached or separated, and when the main heat sealing block and the auxiliary heat sealing block are attached, an attaching surface and an attaching surface between the first main rotating disc and the first auxiliary rotating disc are located on the same plane;

the first bottom heat seal strip and the second bottom heat seal strip are positioned between the material groove and the discharging conveying belt; the first upper heat seal strip is correspondingly arranged right above the first bottom heat seal strip; the second upper heat seal strip is correspondingly arranged right above the second bottom heat seal strip; the first upper heat sealing strip, the second upper heat sealing strip and the middle cutter are all connected to the inner top of the middle frame in a lifting mode; said middle knife is positioned between said first upper heat seal bar and said second upper heat seal bar;

the vacuum suction nozzle is arranged at the front end of the first rotary table device and extends to the rear direction under the first main rotary table and the first auxiliary rotary table; the overlook projection of the vacuum suction nozzle is positioned in the material groove; the vacuum suction nozzle is communicated with the vacuum pipe; the vacuum tube is communicated with the vacuum pump.

Preferably, the front end of the trough extends out of the front end of the main bedplate; the trough comprises a trough wall opposite to and vertical to the main bedplate; the front end of the material groove is sequentially provided with a stick-shaped head, an opening and a slope wall; the opening is splayed in the overlooking direction and faces to the direction far away from the main bedplate; the edge of the front end of the opening is connected with the stick-shaped head; the rear end of the opening is connected with the slope wall; the front portion of the sloped wall is lower than the rear portion.

Preferably, the first rotating disk device further comprises a supporting arm, a main rotating rod, a main bearing, a first gear, a second gear, a slave rotating rod, a slave bearing and a rotating plate;

the support arm includes an end wall of a bottom wall; one end of the supporting arm is fixed on the side frame; the upper part of the first main rotary table is coaxially and fixedly connected to the bottom of the main rotary rod; the middle part of the main rotating rod is rotatably connected to the bottom wall through the main bearing; the top of the main rotating rod is fixedly connected with the first gear; the output shaft of the first motor is fixedly connected with a second gear; the second gear is meshed with the first gear;

the rotating plate comprises a transverse plate and a vertical plate; the upper part of the first slave rotary disc is coaxially and fixedly connected with the bottom of the slave rotary rod; the middle part of the slave rotating rod is connected with the transverse plate in a rotating way through the slave bearing; the vertical plate is fixedly connected to the end wall.

Preferably, the first rotating disc device further comprises an adjusting arm, a first spring, a positioning rod and an adjusting rotating rod; the transverse plate is vertical to the vertical plate; the rotating plate is hinged to the end wall; when the vertical plate rotates to be attached to the end wall, the first slave rotary disc is attached to the first master rotary disc;

the positioning rod is fixedly connected to the vertical plate; two ends of the first spring are respectively connected with the positioning rod and the supporting arm; one end of the adjusting arm is provided with an oval first ejection head; the adjusting arm is rotatably connected to the transverse plate through an adjusting rotating rod; the first plug is contactable with the end wall; the distance from the adjusting rotating rod to the first plug is larger than the distance from the adjusting rotating rod to the end wall.

Preferably, the longitudinal heat sealer further comprises a fixing arm, a main connecting rod, a slave connecting rod and a second spring;

one end of the fixed arm is fixed on the side frame; the bottom of the main connecting rod is connected with the main heat sealing block; the top of the main connecting rod is connected to the fixed arm; the bottom of the slave connecting rod is connected with the slave heat-sealing block; the top of the slave connecting rod is hinged to the fixed arm; the second spring is connected between the main connecting rod and the auxiliary connecting rod.

Preferably, the longitudinal heat sealer further comprises a pitch screw; the slave connecting rod is provided with a screw hole; the rod body of the pitch-adjusting screw rod is provided with an external thread which can be matched with the screw hole; and a second jacking head is arranged at one end of the distance-adjusting screw rod, which is in contact with the main connecting rod.

Preferably, the upper part of the slave connecting rod is bent.

Preferably, the packaging assembly further comprises a hydraulic telescopic rod, a fixed frame and a middle cutting plate; the first upper heat sealing strip, the second upper heat sealing strip and the middle cutter are fixedly connected to the bottom of the fixing frame; the top of the fixed frame is connected to the inner top of the middle frame through the hydraulic telescopic rod;

the middle cutoff plate is located between the first bottom heat seal and the second bottom heat seal; when the first upper heat sealing strip is contacted with the first bottom heat sealing strip, the second upper heat sealing strip is contacted with the second bottom heat sealing strip, and the blade of the middle cutter is contacted with the upper surface of the middle cutting plate.

Preferably, a control assembly is included; the control component comprises a processor, a first switch, a second switch, a third switch and a fourth switch;

the first motor, the second motor, the discharging motor and the discharging motor are all in control connection with the first switch; the vacuum pump is in control connection with the second switch; the longitudinal heat sealer is in control connection with the third switch; the hydraulic telescopic rod is in control connection with the fourth switch;

the first motor, the second motor, the discharging motor, the vacuum pump, the longitudinal heat sealer and the hydraulic telescopic rod are all in control connection with the processor.

Preferably, the processor is a single chip microcomputer.

Compared with the prior art, the invention at least has the following beneficial effects:

the working principle is as follows: before packaging, a packaging bag coiled material is placed on a discharging rotating shaft, under the drive of a discharging motor, the head of the packaging bag coiled material is pulled out and enters a trough under the guide of an auxiliary rotating shaft, after the packaging bag enters the trough, because the width of the trough is smaller than that of the packaging bag coiled material, two sides of the packaging bag are folded, two sides of the folded packaging bag sequentially penetrate through a binding surface between a first main rotating disc and a first slave rotating disc, a binding surface between a main heat sealing block and a slave heat sealing block and a binding surface between a second main rotating disc and a second slave rotating disc and extend to a discharging conveying belt, and a vacuum suction nozzle is positioned in the packaging bag; the first main rotating disc, the first slave rotating disc, the second main rotating disc and the second slave rotating disc are driven to move from the front end to the rear end of the slave trough; and the main heat sealing block and the secondary heat sealing block can carry out real-time heat sealing on two sides of the packaging bag in the moving process to complete the longitudinal sealing of the packaging bag.

Before the packaging bag after longitudinal sealing enters the discharging conveyor belt, transverse sealing is completed under the heat sealing action of the first bottom heat sealing strip, the first upper heat sealing strip, the second bottom heat sealing strip and the second upper heat sealing strip; meanwhile, the middle cutter transversely cuts the transversely sealed packaging bag, so that the packaging bag is independently formed.

In the process of specific vacuum packaging, a transverse heat sealing and cutting operation is performed on the packaging bag firstly, so that the rear end of the packaging bag is in a sealed state, and the vacuum suction nozzle can work normally.

Firstly, when a packaging bag enters the front end of a trough, workers can sequentially and alternately put food to be packaged into a packaging belt, the food moves backwards along with the packaging bag in sequence, when the packaging bag moves between the trough and a discharging conveying belt, a vacuum pump works, and a vacuum suction nozzle enables negative pressure to be generated in the packaging bag to shrink; at the moment, the first upper heat-seal strip, the second upper heat-seal strip and the middle cutter move downwards, the first upper heat-seal strip is in pressing contact fit with the first bottom heat-seal strip, the second upper heat-seal strip is in pressing contact fit with the second bottom heat-seal strip, heat sealing is started after the contact, the heat sealing lasts for a certain time (usually 3-5 seconds), and meanwhile, the middle cutter transversely cuts off the packaging bag; after the heat-sealing is finished, the vacuum pump stops working, and the heat-sealing and cutting finished back independent packaging bag is conveyed backwards from the discharging conveying belt, so far, the vacuum packaging process of an independent product is finished.

The automatic vacuum packaging machine provided by the invention can realize automatic and continuous vacuum packaging without using a mould, has the advantages of high automation degree, less manual operation, simple structure and low production cost, and has better practicability and popularization.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic perspective view of an embodiment of an automatic vacuum packaging machine according to the present invention;

fig. 2 is a partial perspective enlarged structural view of a first rotating disc device of an embodiment of the automatic vacuum packaging machine according to the invention;

fig. 3 is a partial front enlarged sectional view of the first turntable device in an embodiment of the automatic vacuum packing machine of the present invention;

FIG. 4 is a schematic view of a partial enlarged perspective view of a longitudinal heat sealing device of an embodiment of the automatic vacuum packaging machine of the present invention;

FIG. 5 is a partial front enlarged cross-sectional view of the longitudinal heat seal apparatus of one embodiment of the automatic vacuum packaging machine of the present invention;

fig. 6 is a perspective view illustrating a feeding assembly of an embodiment of an automatic vacuum packing machine according to the present invention.

The reference numbers illustrate:

the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The invention provides an automatic vacuum packaging machine.

Referring to fig. 1 to 6, an automatic vacuum packing machine includes a main body assembly, a conveying assembly and a packing assembly; the main body assembly includes a main stage 110, a main deck 120, side frames 130, and a middle frame 140; the main platen 120 is horizontally disposed at an upper portion of the main stage 110; the side frames 130 are provided at the sides of the main deck 120; the middle frame 140 covers the rear end of the main bedplate 120; the projection in the front direction of the middle frame 140 is in a shape of a "door".

The conveying assembly includes a discharging rotating shaft 210, a discharging motor (not shown), an auxiliary rotating shaft 220, a trough 230, a first rotating disc device 300, a second rotating disc device 400, a first discharging rotating shaft (not shown), a second discharging rotating shaft (not shown), a discharging conveying belt 240 and a discharging motor (not shown).

The discharging rotating shaft 210 is horizontally and rotatably connected to the side frame 130; the discharging rotating shaft 210 is positioned below the main bedplate 120 and close to the front end of the main bedplate 120; the discharging motor is in driving connection with a discharging rotating shaft 210; the discharge motor is arranged inside the side frame 130; the trough 230 is a U-shaped trough; the trough 230 is arranged in the middle of the main platen 120, and the length direction of the trough 230 is parallel to the length direction of the main platen 120; an auxiliary rotating shaft 220 is provided at the front end of the main deck 120; the auxiliary rotating shaft 220 is located higher than the discharging rotating shaft 210 and lower than the main platen 120, and is located in front of the trough 230, and the auxiliary rotating shaft 220 is parallel to the discharging rotating shaft 210. By providing the auxiliary rotating shaft 220, when the packaging web is wound around the discharging rotating shaft 210, the packaging web can more smoothly enter the trough 230 under the guidance of the auxiliary rotating shaft 220.

The discharging conveyer belt 240 is embedded in the main bedplate 120 and is positioned behind the trough 230; the upper surface of the conveyor belt and the upper surface of the main deck 120 are located on the same plane; the discharging conveyer belt 240 is sleeved between the first discharging rotating shaft and the second discharging rotating shaft; the discharging motor is connected with the first discharging rotating shaft in a driving way; the discharge motor is disposed inside the main platen 120.

The first and

second turntable devices

300 and 400 are connected to the side frames 130 and are located above the main deck 120; the first turntable device 300 includes a first master turntable 311, a first slave turntable 312, and a first motor 390; the first main rotating disc 311 and the first auxiliary rotating disc 312 are positioned on the same horizontal plane and attached to each other; a ring of rubber layers (to increase friction and facilitate movement of the packaging bag, not shown) is arranged around the edges of the first main turntable 311 and the first auxiliary turntable 312; the first motor 390 is drivingly connected to the first main turntable 311.

The second turntable device 400 includes a second master turntable 410, a second slave turntable 420, and a second motor (not shown); the second master turntable 410 and the second slave turntable 420 are positioned on the same horizontal plane and attached to each other; the edges of the second main turntable 410 and the second auxiliary turntable 420 are also provided with a ring of rubber layer (to increase friction force and facilitate driving the packaging bag to move, not shown in the figure); the second motor is drivingly connected to the second main turntable 410.

The abutting surface between the first main rotating disc 311 and the first slave rotating disc 312 and the abutting surface between the second main rotating disc 410 and the second slave rotating disc 420 are located on the same vertical plane, and the same vertical plane coincides with the center line of the trough 230 in the length direction.

The package assembly includes a longitudinal heat sealer 500, a first bottom heat seal 610, a second bottom heat seal 620, a first upper heat seal strip 640, a second upper heat seal strip 650, a middle knife 660, a vacuum nozzle 810, a vacuum tube 820, and a vacuum pump (not shown).

The longitudinal heat sealer 500 is attached to the side frame 130 and is located between the first carousel means 300 and the second carousel means 400; the longitudinal heat sealer 500 includes a primary heat seal block 520 and a secondary heat seal block 530; the primary heat seal block 520 and the secondary heat seal block 530 can be relatively attached or detached, and when the primary heat seal block 520 and the secondary heat seal block 530 are attached, the attachment surface is in the same plane as the attachment surface between the first main rotating disk 311 and the first secondary rotating disk 312. The primary heat seal block 520 and secondary heat seal block 530 heat seal the package across their abutting faces.

The first bottom heat seal 610 and the second bottom heat seal 620 are both positioned between the trough 230 and the discharging conveyer belt 240; the first upper heat-seal strip 640 is correspondingly arranged right above the first bottom heat-seal strip 610; the second upper heat-seal strip 650 is correspondingly disposed right above the second bottom heat-seal strip 620; the first upper heat-seal strip 640, the second upper heat-seal strip 650 and the middle knife 660 are all connected to the inner top of the middle frame 140 in a lifting manner; intermediate knife 660 is positioned between first upper heat-seal bar 640 and second upper heat-seal bar 650.

The vacuum suction nozzle 810 is provided at the front end of the first turntable device 300, and the vacuum suction nozzle 810 extends rearward directly below the first main turntable 311 and the first sub-turntable 312; the top projection of the vacuum nozzle 810 is located within the trough 230; the vacuum nozzle 810 is communicated with a vacuum pipe 820; the vacuum pipe 820 is communicated with a vacuum pump.

The working principle is as follows: before packaging, a packaging bag coiled material is placed on the discharging rotating shaft 210, under the driving of a discharging motor, the head of the packaging bag coiled material is pulled out and enters the trough 230 through the guiding of the auxiliary rotating shaft 220, after the packaging bag coiled material enters the trough 230, the two sides of the packaging bag are folded because the width of the trough 230 is smaller than that of the packaging bag coiled material, the two sides of the folded packaging bag sequentially penetrate through the adhering surface between the first main rotating disc 311 and the first slave rotating disc 312, the adhering surface between the main heat sealing block 520 and the slave heat sealing block 530 and the adhering surface between the second main rotating disc 410 and the second slave rotating disc 420 and extend to the discharging conveying belt 240, and the vacuum suction nozzle 810 is positioned in the packaging bag; the first main rotating disc 311, the first slave rotating disc 312, the second main rotating disc 410 and the second slave rotating disc 420 are driven to move from the front end to the rear end of the slave trough 230; and the main heat-sealing block 520 and the sub heat-sealing block 530 can heat-seal both sides of the moving packaging bag in real time to complete the longitudinal sealing of the packaging bag.

Before the longitudinally sealed packaging bag enters the discharging conveyer belt 240, transverse sealing is completed under the heat sealing action of the first bottom heat seal 610 and the first upper heat seal strip 640 as well as the second bottom heat seal 620 and the second upper heat seal strip 650; meanwhile, the middle cutter 660 transversely cuts the transversely sealed packaging bag, so that the packaging bag is independently formed.

In a specific vacuum packaging process, a transverse heat-sealing and cutting operation is performed on the packaging bag to make the rear end of the packaging bag in a sealed state, so that the vacuum nozzle 810 can normally operate.

Firstly, when a packaging bag enters the front end of the trough 230, a worker can sequentially and alternately put food to be packaged into the packaging belt, the food moves backwards sequentially along with the packaging bag, when the packaging bag moves between the trough 230 and the discharging conveying belt 240, the vacuum pump works, and the vacuum suction nozzle 810 enables negative pressure to be generated in the packaging bag to shrink; at this time, the first upper heat-seal strip 640, the second upper heat-seal strip 650 and the middle cutter 660 all move downwards, the first upper heat-seal strip 640 is in press-contact fit with the first bottom heat-seal strip 610, the second upper heat-seal strip 650 is in press-contact fit with the second bottom heat-seal strip 620, heat sealing is started after contact, the heat sealing lasts for a certain time (usually 3-5 seconds), and meanwhile, the middle cutter 660 transversely cuts off the packaging bag; after the heat sealing is completed, the vacuum pump stops working, and the next independent packaging bag after the heat sealing and cutting is conveyed backwards from the discharging conveyer belt 240 (driven by the discharging motor), so that the vacuum packaging process of an independent product is completed.

The automatic vacuum packaging machine provided by the invention can realize automatic and continuous vacuum packaging without using a mould, has the advantages of less manual operation, simple structure and low production cost, and has better practicability and popularization.

Further, as shown in fig. 1, the front end of the trough 230 extends out of the front end of the main deck 120; trough 230 includes trough walls 234 that are opposite and perpendicular to main deck 120; the front end of the trough 230 is sequentially provided with a stick-shaped head 231, an opening 232 and a slope wall 233; the opening 232 is splayed in the top view direction, and the opening 232 faces away from the main bedplate 120; a stick-shaped head 231 is connected to the front end edge of the opening 232; the rear end of the opening 232 is connected with a sloping wall 233; the front portion of the sloped wall 233 is lower than the rear portion.

Through the technical scheme, the packaging bag can be more smoothly fed into the material groove 230 from the discharging rotating shaft.

Specific structures of the first turntable device 300 and the second turntable device 400 are specifically described below, and since the overall structures of the first turntable device 300 and the second turntable device 400 are the same, only the first turntable device 300 is described here by way of example, and detailed structures of the second turntable device 400 are not described again; as shown in fig. 2 and 3, the first rotary disk device 300 further includes a support arm 320, a main rotary rod 380, a main bearing 381, a first gear 382, a second gear 391, a slave rotary rod 370, a slave bearing 371, and a rotary plate 360.

The support arm 320 includes an end wall 322 of a bottom wall 321; one end of the support arm 320 is fixed to the side frame 130; the upper part of the first main rotary disc 311 is coaxially and fixedly connected with the bottom of the main rotary rod 380; the middle part of the main rotating rod 380 is rotatably connected to the bottom wall 321 through a main bearing 381; the top of the main rotating rod 380 is fixedly connected with a first gear 382; a second gear 391 is fixedly connected to an output shaft of the first motor 390; the second gear 391 meshes with the first gear 382.

The rotating plate 360 includes a horizontal plate 361 and a vertical plate 362; the upper part of the first driven rotary disc 312 is coaxially connected with the bottom of the driven rotary rod 370; the middle part of the slave rotating rod 370 is connected to the transverse plate 361 by rotating through the slave bearing 371; the vertical plate 362 is fixedly connected to the end wall 322, and the bottom surface of the transverse plate 361 and the bottom surface of the bottom wall 321 are located at the same horizontal plane.

Meanwhile, as a preferable scheme, as shown in fig. 2 and fig. 3, the first rotary plate device 300 further includes an adjusting arm 350, a first spring 340, a positioning rod 330, and an adjusting rotary rod 353; the horizontal plate 361 and the vertical plate 362 are vertical; swivel plate 360 is hinged to end wall 322; the rotating plate 360 can rotate horizontally, and when the vertical plate 362 rotates to be jointed with the end wall 322, the first slave rotary disc 312 is jointed with the first master rotary disc 311.

The positioning rod 330 is fixedly connected to the vertical plate 362; both ends of the first spring 340 are respectively connected to the positioning rod 330 and the supporting arm 320; one end of the adjusting arm 350 is provided with an oval first ejector 351; the adjusting arm 350 is rotatably connected to the transverse plate 361 through the adjusting rotating rod 353; the first head 351 can be in contact with the end wall 322; the distance from the adjusting rotary rod 353 to the first ejector 351 is larger than the distance from the adjusting rotary rod 353 to the end wall 322; the end of the adjusting arm 350 is also provided with an arm sleeve 352 for easy holding.

Through the above technical solution, when the adjusting arm 350 is rotated, the top end of the first ejector 351 slides on the end wall 322 to integrally rotate the rotating plate 360, so that the distance between the first main rotating disc 311 and the first slave rotating disc 312 is increased, after the adjusting arm 350 is released, the vertical plate 362 and the end wall 322 are attached again under the action of the first spring 340, that is, the original distance between the first main rotating disc 311 and the first slave rotating disc 312 is restored; the distance between the first slave turntable 312 and the first master turntable 311 can be adjusted, so that the packaging bags can be conveniently maintained or placed when the production is started.

Further, as shown in fig. 4 and 5, the longitudinal heat sealer 500 further includes a fixing arm 510, a master attaching bar 540, a slave attaching bar 550, and a second spring 570.

One end of the fixed arm 510 is fixed to the side frame 130; the bottom of the main connecting rod 540 is connected with a main heat sealing block 520; the top of the main attachment rod 540 is attached to the fixed arm 510; the slave heat-seal block 530 is attached from the bottom of the connection bar 550; hinged to the fixed arm 510 from the top of the connecting rod 550 and perpendicular to the trough 230 from the plane of rotation of the connecting rod 550; a second spring 570 is connected between the master link 540 and the slave link 550.

Through the technical scheme, the main heat sealing block 520 and the auxiliary heat sealing block 530 can be attached to or separated from each other, so that the packaging bag is convenient to overhaul or place when the production is started.

Meanwhile, as shown in fig. 4 and 5, the longitudinal heat sealer 500 further includes a pitch screw 560; a screw hole 551 is arranged on the connecting rod 550; the rod body of the pitch-adjusting screw rod 560 is provided with an external thread which can be matched with the screw hole 551; a second plug 561 is provided at one end of the pitch screw 560 contacting the main connection rod 540. The other end of the pitch screw 560 is provided with a torsion plate 562 to facilitate manipulation of torsion.

Through the technical scheme, the distance between the main heat sealing block 520 and the auxiliary heat sealing block 530 can be adjusted by rotating the distance adjusting screw rod 560, so that the packaging bag can be placed conveniently when the production is started.

Meanwhile, the upper portion of the connection rod 550 is bent. So that the interval between the main heat-seal block 520 and the sub heat-seal block 530 can be more smoothly adjusted by the adjustment screw.

In addition, as shown in fig. 1, the packaging assembly further includes a hydraulic telescopic rod 680 (an electrically controlled hydraulic lifting rod in this embodiment), a fixing frame 670 and a middle cutting plate 630; the first upper heat-seal strip 640, the second upper heat-seal strip 650 and the middle cutter 660 are fixedly connected to the bottom of the fixing frame 670; the top of the fixing frame 670 is connected to the inner top of the middle frame 140 by a hydraulic telescopic rod 680.

The middle cutoff plate 630 is located between the first bottom heat seal 610 and the second bottom heat seal 620; when first upper heat seal strip 640 and first bottom heat seal 610 are in contact, second upper heat seal strip 650 and second bottom heat seal 620 are in contact, and the cutting edge of middle knife 660 is in contact with the upper surface of middle cutting plate 630.

Through the technical scheme, the first upper heat-seal strip 640, the second upper heat-seal strip 650, the first bottom heat-seal strip 610 and the second bottom heat-seal strip 620 can be pressed and contacted with each other to complete the heat-seal operation, and meanwhile, the middle cutter 660 can transversely cut the packaging bag.

In addition, as shown in fig. 6, the automatic vacuum packing machine of the present invention further includes a feeding assembly; the feeding assembly comprises a secondary stage 710, a secondary stage plate 720 and a feeding conveyer belt 740; the auxiliary bedplate 720 is arranged above the auxiliary rack 710, and the rear end of the auxiliary bedplate 720 is close to the front end of the trough 230; a platen slot 730 is formed on the auxiliary platen 720; a feeding conveyer belt 740 is arranged in the bedplate groove 730; the feeding conveyor belt 740 is provided with a plurality of feeding stoppers 750 at regular intervals.

Through the technical scheme, the workers can more conveniently put the food to be packaged into the packaging bag; when in use, the food to be packaged is only required to be sequentially placed on the conveyer belt space formed by the separation of the feeding baffle 750 and the feeding conveyer belt 740; the feeding conveyor 740 sequentially conveys the food to be packaged to the front end of the chute 230 and into the package.

In addition, the automatic vacuum packaging machine provided by the invention also comprises a control component; the control assembly includes a processor (preferably a single chip microcomputer in this embodiment, not shown), a first switch (not shown), a second switch (not shown), a third switch (not shown), and a fourth switch (not shown).

The first motor 390, the second motor and the discharging motor are all connected with the first switch in a control way; the vacuum pump is in control connection with the second switch; the longitudinal heat sealer 500 is in control connection with a third switch; the hydraulic telescopic rod 680 is in control connection with the fourth switch.

Through setting up first switch, second switch, third switch and fourth switch for the staff can manually control first motor 390, second motor, blowing motor, ejection of compact motor, vacuum pump, vertical heat sealer 500 box hydraulic telescoping rod 680.

The first motor 390, the second motor, the discharging motor, the vacuum pump, the longitudinal heat sealer 500 and the hydraulic telescopic rod 680 are all connected with the processor in a control way.

Through the technical scheme, the first motor 390, the second motor, the discharging motor, the vacuum pump, the longitudinal heat sealer 500 and the hydraulic telescopic rod 680 can be automatically started and stopped, and the specific starting and stopping mode refers to the working principle.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. An automatic vacuum packaging machine comprises a main body assembly, a conveying assembly and a packaging assembly; the main body assembly comprises a main rack, a main bedplate, side frames and a middle frame; the main bedplate is horizontally arranged at the upper part of the main rack; the side frames are arranged on the side surfaces of the main bedplate; the middle frame is covered at the rear end of the main bedplate;

2. The automatic vacuum packaging machine as claimed in claim 1, wherein the front end of said chute extends beyond the front end of said main table; the trough comprises a trough wall opposite to and vertical to the main bedplate; the front end of the material groove is sequentially provided with a stick-shaped head, an opening and a slope wall; the opening is splayed in the overlooking direction and faces to the direction far away from the main bedplate; the edge of the front end of the opening is connected with the stick-shaped head; the rear end of the opening is connected with the slope wall; the front portion of the sloped wall is lower than the rear portion.

3. The automatic vacuum packaging machine as claimed in claim 1, wherein said first turntable device further comprises a support arm, a master rotor, a master bearing, a first gear, a second gear, a slave rotor, a slave bearing and a rotor plate;

4. The automatic vacuum packaging machine of claim 3 wherein said first turntable means further comprises an adjustment arm, a first spring, a positioning rod and an adjustment rotary rod; the transverse plate is vertical to the vertical plate; the rotating plate is hinged to the end wall; when the vertical plate rotates to be attached to the end wall, the first slave rotary disc is attached to the first master rotary disc;

5. The automatic vacuum packaging machine according to claim 1, wherein said longitudinal heat sealer further comprises a fixing arm, a master link, a slave link and a second spring;

6. The automatic vacuum packaging machine of claim 5 wherein said longitudinal heat sealer further comprises a pitch screw; the slave connecting rod is provided with a screw hole; the rod body of the pitch-adjusting screw rod is provided with an external thread which can be matched with the screw hole; and a second jacking head is arranged at one end of the distance-adjusting screw rod, which is in contact with the main connecting rod.

7. The automatic vacuum packing machine as claimed in claim 5, wherein the upper portion of the slave link rod is curved.

8. The automatic vacuum packaging machine of claim 1 wherein said packaging assembly further comprises a hydraulic telescoping rod, a fixed mount and a mid-cutoff plate; the first upper heat sealing strip, the second upper heat sealing strip and the middle cutter are fixedly connected to the bottom of the fixing frame; the top of the fixed frame is connected to the inner top of the middle frame through the hydraulic telescopic rod;

9. The automatic vacuum packaging machine of claim 8, including a control assembly; the control component comprises a processor, a first switch, a second switch, a third switch and a fourth switch;

10. The automatic vacuum packaging machine as claimed in claim 9, wherein said processor is a single chip microcomputer.