Vacuum-pumping automatic vertical film rolling packaging machine for experimental animal feed packaging

Abstract

The invention relates to a vacuumizing automatic vertical film rolling packaging machine for experimental animal feed packaging. The vacuumizing automatic vertical film rolling packaging machine comprises a mounting main frame, and a film guiding mechanism, a bag forming device, a vertical sealing mechanism, a film drawing wheel system, a transverse sealing mechanism, a vacuumizing device and a mechanical finger wrinkle reducing device which are arranged on the mounting main frame; the film guiding mechanism, the bag forming device, the vertical sealing mechanism, the film pulling wheel system and the transverse sealing mechanism are sequentially arranged in the film rolling running direction. The bag forming device is used for curling the planar film into a cylindrical film; the vertical sealing mechanism is used for vertically sealing the cylindrical film to form a hollow tubular film; the film drawing wheel system is used for conveying the hollow tubular film to the transverse sealing mechanism; the transverse sealing mechanism comprises a transverse sealing hot knife and a transverse sealing cutter, and the transverse sealing hot knife is used for conducting intermittent transverse sealing on the hollow tubular film. According to the packaging machine, the packaging bag opening is tensioned through the mechanical finger wrinkle reduction device, wrinkles of the packaging opening are eliminated, and the packaging quality is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of packaging and relates to a vacuumized automatic vertical film-rolling packaging machine for experimental animal feed. BACKGROUND

[0002] In the existing packaging technology, vertical film-rolling packaging machines, pillow packaging machines and bag feeding packaging machines are usually used for packaging. Vertical roll The film-rolling packaging machine has the advantages of cost saving and high speed compared with the pillow packaging machine and the bag feeding packaging machine.

[0003] Experimental animals are used for clinical research, and when they are fed, it is necessary to avoid the contamination of the feed by external bacteria, so as to avoid the influence on the experimental animals. Therefore, the packaging of the experimental animal feed needs to be vacuumized by the automatic vertical film-rolling packaging machine.

[0004] When the existing vacuumized automatic vertical film-rolling packaging machine is used to package the feed, the packaging port is prone to wrinkles. This not only makes the appearance of the package ugly, but more importantly, the wrinkles are prone to air leakage, affecting the packaging effect and quality. Therefore, it is an important problem in the packaging machine technology field of the experimental animal feed industry to provide an improved method that can eliminate the wrinkles of the packaging port.

[0005] Patent application CN116902310A provides an automatic packaging machine, but the device is not a film-rolling packaging machine, and additional packaging bags need to be prepared when using the device.

[0006] CN202222327799.8 is a packaging bag sealing structure and tea packaging machine. The device includes a heating assembly and a roller. The roller is used to press the bag opening of the packaging bag. The roller is used to press and flatten the plastic bag opening. Then the heating assembly is used to seal the plastic bag opening. Although the device solves the problem that air bubbles or wrinkles are easily generated when the plastic bag opening is attached together, causing air leakage during sealing, the device is not a vacuumized automatic vertical film-rolling packaging machine, and the roller design of the device cannot be applied to the vacuumized automatic vertical film-rolling packaging machine. The specific reasons are as follows: the vertical pipe of the vacuumizing device of the vacuumized automatic vertical film-rolling packaging machine needs to be inserted into the packaging bag. When the roller of the device rolls the bag opening of the packaging bag in the transverse direction, it will encounter the vertical pipe of the vacuumizing device, so that the roller cannot completely press and flatten the plastic bag opening.

[0007] Therefore, it is of great significance to research a vacuumized automatic vertical film-rolling packaging machine for experimental animal feed to solve the problems existing in the prior art. SUMMARY

[0008] The present application aims at solving the problems in the prior art and providing an experimental animal feed packaging vacuum automatic vertical film rolling packaging machine.

[0009] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows:

[0010] An experimental animal feed packaging vacuum automatic vertical film rolling packaging machine comprises a mounting main frame and a film guide mechanism, a bag former, a vertical sealing mechanism, a film pulling wheel system, a horizontal sealing mechanism, a vacuum device and a mechanical finger wrinkle reduction device arranged on the mounting main frame.

[0011] The bag former is used for curling a flat film into a cylindrical film; the vertical sealing mechanism is used for vertically sealing the cylindrical film to form a hollow tubular film; and the film pulling wheel system is used for conveying the hollow tubular film to the direction of the horizontal sealing mechanism.

[0012] The horizontal sealing mechanism is a prior art, comprising a horizontal sealing iron and a horizontal sealing cutter.

[0013] Along the conveying direction of the hollow tubular film, the region of the hollow tubular film to be sealed is referred to as a to-be-sealed region; and the horizontal sealing cutter is used for cutting the to-be-sealed region after being sealed.

[0014] Along the conveying direction of the hollow tubular film, the mechanical finger wrinkle reduction device is used for simultaneously stretching the front side and the rear side of the to-be-sealed region, so that the inner wall of the hollow tubular film between the front side and the rear side of the to-be-sealed region is adhered; the stretching directions of the front side and the rear side of the to-be-sealed region are the same as the length direction of the horizontal sealing iron; and when the horizontal sealing iron seals the hollow tubular film, the front side and the rear side of the to-be-sealed region are in a stretched state.

[0015] The hollow tubular film between two adjacent to-be-sealed regions is a packaging bag, and the vacuum device is used for vacuumizing the inside of the packaging bag.

[0016] As a preferred technical scheme:

[0017] The experimental animal feed packaging vacuum automatic vertical film packaging machine further comprises a vacuum compression device; the vacuum compression device is arranged on the mounting main frame; along the film running direction, the film guide mechanism, the bag former, the vertical sealing mechanism, the film pulling wheel system, the horizontal sealing mechanism and the vacuum compression device are arranged in sequence;

[0018] Along the film running direction, the vacuum compression device is located on the front side of the mechanical finger wrinkle reduction device, and the vacuum compression device is used to compress the upper part of the packaging bag to isolate the to-be-sealed area from the lower part of the packaging bag; the vacuum device is used to perform vacuumization on the lower part in the packaging bag;

[0019] The vacuum compression device is a prior art, and by changing the position of the vacuum compression device in the vacuum automatic vertical film packaging machine in the prior art, the interference of the vacuum device on the to-be-sealed area is eliminated. Specifically, along the film running direction, in the prior art, the vacuum compression device is installed on the rear side of the horizontal sealing mechanism to close the bag opening of the packaging bag to facilitate vacuumization, and in the present application, the vacuum compression device is installed on the front side of the horizontal sealing mechanism and also on the front side of the mechanical finger wrinkle reduction device, which not only closes the bag opening but also isolates the adverse effects that may be caused by the shrinkage of the packaging bag during vacuumization (the adverse effects are additional wrinkles caused by shrinkage on the to-be-sealed area).

[0020] The experimental animal feed packaging vacuum automatic vertical film packaging machine further comprises a horizontal mounting plate:

[0021] The horizontal mounting plate is fixedly connected with the mounting main frame; the mechanical finger wrinkle reduction device and the horizontal sealing mechanism are both located below the horizontal mounting plate and are fixedly connected with the horizontal mounting plate;

[0022] The horizontal mounting plate is provided with a rectangular through hole, and the rectangular through hole is used to facilitate the conveying of the hollow tubular film from the film pulling wheel system to the horizontal sealing mechanism.

[0023] The experimental animal feed packaging vacuum automatic vertical film packaging machine further comprises a horizontal mounting plate:

[0024] The cylinder base of the tension cylinder is fixedly connected with the horizontal mounting plate, and the piston rod of the tension cylinder is fixedly connected with the cylinder connecting plate; the cylinder connecting plate is fixedly connected with the cylinder base of the parallel finger cylinder; the mechanical arm connecting plate is a long strip-shaped vertical plate; the two mechanical arm connecting plates are respectively fixedly connected with one paw of the parallel finger cylinder;

[0025] In the prior art, all the parallel finger cylinders are provided with two paws;

[0026] When the tension cylinder is not started, the piston rod of the tension cylinder is at the maximum range; when the parallel finger cylinder is not started, the distance between the two claws of the parallel finger cylinder is the maximum distance;

[0027] The mechanical arm is a horizontally placed rectangular block I, and the mechanical finger body is a horizontally placed rectangular block II; the length of the rectangular block I is greater than that of the rectangular block II;

[0028] The four mechanical arms are respectively denoted as mechanical arm I, mechanical arm II, mechanical arm III and mechanical arm IV; the four mechanical finger bodies are respectively denoted as mechanical finger body I, mechanical finger body II, mechanical finger body III and mechanical finger body IV; the two mechanical arm connecting plates are respectively denoted as mechanical arm connecting plate I and mechanical arm connecting plate II;

[0029] The upper end of the mechanical arm connecting plate I is connected with one end of the mechanical arm I, and the lower end of the mechanical arm connecting plate I is connected with one end of the mechanical arm II; the upper end of the mechanical arm connecting plate II is connected with one end of the mechanical arm III, and the lower end of the mechanical arm connecting plate II is connected with one end of the mechanical arm IV; the mechanical finger body I is fixed on the mechanical arm I, the mechanical finger body II is fixed on the mechanical arm II, the mechanical finger body III is fixed on the mechanical arm III, and the mechanical finger body IV is fixed on the mechanical arm IV; the mechanical finger body I and the mechanical finger body III are oppositely arranged, and the lower surfaces of the mechanical finger body I and the mechanical finger body III are on the same plane; the mechanical finger body II and the mechanical finger body IV are oppositely arranged, and the upper surfaces of the mechanical finger body II and the mechanical finger body IV are on the same plane; the opposite sides of the mechanical finger body I and the mechanical finger body III are respectively fixed with a finger rubber sheet, denoted as finger rubber sheet I and finger rubber sheet III; the opposite sides of the mechanical finger body II and the mechanical finger body IV are respectively fixed with a finger rubber sheet, denoted as finger rubber sheet II and finger rubber sheet IV;

[0030] The tension cylinders of the two mechanical finger mechanisms are oppositely arranged; the cross section of the hollow tubular film is an ellipse, and the long axis direction of the ellipse is the same as the length direction of the transverse sealing iron; when the piston rods of the tension cylinders of the two mechanical finger mechanisms are at the maximum range, the distance between the finger rubber sheets I of the two mechanical finger mechanisms is less than 7 / 8 of the long axis of the hollow tubular film and greater than 2 / 3 of the long axis of the hollow tubular film; when the piston rods of the tension cylinders of the two mechanical finger mechanisms are at the minimum range, the distance between the finger rubber sheets I of the two mechanical finger mechanisms is greater than 7 / 8 of the long axis of the hollow tubular film and less than 11 / 12 of the long axis of the hollow tubular film;

[0031] When the two claws of the parallel finger cylinder are in close contact, the finger rubber sheet I and the finger rubber sheet III are in close contact, and the finger rubber sheet II and the finger rubber sheet IV are in close contact;

[0032] Along the running direction of the film, the finger rubber sheet I and the finger rubber sheet III are located at the rear side of the transverse sealing hot knife of the transverse sealing mechanism, and the finger rubber sheet II and the finger rubber sheet IV are located at the front side of the transverse sealing hot knife of the transverse sealing mechanism.

[0033] The vacuum automatic vertical film packaging machine for packaging experimental animal feed as described above, the tension cylinder is a sliding table cylinder, the tension cylinder includes a sliding plate; the sliding plate and the piston rod are fixedly connected; the piston rod of the tension cylinder is fixedly connected with the cylinder connecting plate through the sliding plate;

[0034] The vacuum automatic vertical film packaging machine for packaging experimental animal feed as described above, the vacuum device includes a vacuum pump, a gas valve, a vacuum tank, a telescopic cylinder, a vacuum pipe and a vertical pipe;

[0035] The telescopic cylinder is fixed on the installation main frame, the upper part of the vertical pipe is fixedly connected with the telescopic cylinder, and the telescopic cylinder is used to drive the vertical pipe to move up and down; the lower end of the vertical pipe is used to be inserted into the lower part of the packaging bag, the upper end of the vertical pipe is connected with one end of the vacuum pipe, the other end of the vacuum pipe is connected with the vacuum tank; the vacuum tank is connected with the vacuum pump;

[0036] A vacuum electric contact pressure gauge is arranged on the vacuum tank, and the vacuum electric contact pressure gauge is electrically connected with the vacuum pump; the vacuum electric contact pressure gauge is used to detect the vacuum degree in the vacuum tank, and when the vacuum degree in the vacuum tank is lower than the lower limit value of the set range of the vacuum degree on the vacuum electric contact pressure gauge, the vacuum electric contact pressure gauge controls the vacuum pump to start; when the vacuum degree in the vacuum tank is higher than the upper limit value of the set range of the vacuum degree on the vacuum electric contact pressure gauge after the vacuum pump starts, the vacuum electric contact pressure gauge controls the vacuum pump to stop; and the vacuum pump is used to perform vacuumization on the vacuum tank.

[0037] The vacuum automatic vertical film packaging machine for packaging experimental animal feed as described above, the vacuum automatic vertical film packaging machine for packaging experimental animal feed further includes a feeding device; the lower end of the feeding device is inserted into the bag former, and the feeding device is used to lower a certain amount of pet feed.

[0038] The vacuum automatic vertical film packaging machine for packaging experimental animal feed as described above, along the running direction of the film, the distance between the vertical sealing mechanism and the transverse sealing mechanism is less than the bag length of the packaging bag, and the length of the vertical sealing mechanism is greater than the bag length of the packaging bag.

[0039] The automatic vacuum vertical film rolling packaging machine for experimental animal feed packaging further comprises a start preparation button, a running button and a PLC controller; the blanking device, the transverse sealing mechanism, the vertical sealing mechanism, the film rolling wheel system, the tensioning cylinder, the parallel finger cylinder, the air valve and the telescopic cylinder are electrically connected with the PLC controller respectively; the PLC controller is used for controlling the quantitative blanking of the blanking device; the PLC controller is used for controlling the transverse sealing and cutting of the transverse sealing mechanism; the PLC controller is used for controlling the vertical sealing of the vertical sealing mechanism; the PLC controller is used for controlling the film rolling wheel system to pull and convey the hollow tubular film; the PLC controller is used for controlling the telescopic range of the piston rod of the tensioning cylinder, the parallel finger cylinder and the telescopic cylinder; and the PLC controller is used for controlling the opening degree of the air valve so that the vacuumizing device performs vacuumizing on the lower part in the packaging bag.

[0040] The PLC controller is electrically connected with the start preparation button, and the start preparation button is used for starting preparation through the PLC controller; along the running direction of the film, before the start preparation, the cylindrical film needs to be manually pulled to the front side of the film rolling wheel system; and the start preparation is used for preparing an empty packaging bag (empty bag).

[0041] The PLC controller is electrically connected with the running button, and the running button is used for equipment running through the PLC controller; and the equipment running is used for continuously producing the vacuum packaging bag containing the experimental animal feed.

[0042] During the start preparation or the equipment running, before the PLC controller controls the air valve, the PLC controller first controls the two parallel finger cylinders to clamp the hollow tubular film, and then controls the telescopic rod of the tensioning cylinder to retract so as to stretch the hollow tubular film, and then controls the vacuumizing and compacting device to compact the upper part of the packaging bag.

[0043] During the start preparation or the equipment running, after the PLC controller controls the transverse sealing cutter to cut (cut the bag), the PLC controller controls the parallel finger cylinder and the tensioning cylinder to reset in sequence.

[0044] Compared with the prior art, the start preparation and the equipment running of the application only increase the control of the tensioning cylinder and the parallel finger cylinder.

[0045] The specific steps of the start preparation of the application are as follows:

[0046] (1) The PLC controller first controls the vertical sealing of the vertical sealing mechanism, and after the vertical sealing mechanism resets, the PLC controller controls the film rolling wheel system to convey a bag length in the conveying direction of the film.

[0047] (2) The PLC controller controls the vertical sealing mechanism and the horizontal sealing mechanism simultaneously, and after the vertical sealing mechanism and the horizontal sealing mechanism are reset, the PLC controller controls the film pulling wheel system to deliver a length of one bag to the transport direction of the film roll, so as to form a packaging bag with an opening facing the film pulling wheel system;

[0048] (3) The PLC controller controls the extension range of the telescopic cylinder so that the lower end of the vertical pipe is inserted into the lower part of the packaging bag;

[0049] (4) The PLC controller controls the start of the two parallel finger cylinders, so that the two claws of each parallel finger cylinder are in close contact, so that the mechanical finger wrinkle reduction device presses the hollow tubular film;

[0050] (5) The PLC controller controls the extension range of the tensioning cylinder to be greater than 7 / 8 of the long axis of the hollow tubular film and less than 11 / 12 of the long axis of the hollow tubular film, so as to tension the hollow tubular film to eliminate wrinkles;

[0051] (6) The PLC controller controls the vacuum compression device to compress the upper part of the packaging bag to isolate the to-be-sealed area from the lower part of the packaging bag;

[0052] (7) The PLC controller controls the opening of the air valve so that the vacuum device performs vacuumization on the lower part of the packaging bag;

[0053] (8) The PLC controller controls the extension range of the telescopic cylinder so that the lower end of the vertical pipe is separated from the packaging bag;

[0054] (9) The PLC controller controls the vertical sealing mechanism and the horizontal sealing mechanism simultaneously, and then controls the horizontal sealing cutter to cut (cut the bag), and then the PLC controller controls the reset of the vertical sealing mechanism, the horizontal sealing mechanism, the parallel finger cylinder and the tensioning cylinder; wherein, after the horizontal sealing is completed, the bag is cut, and at the same time, the bottom of the next packaging bag is sealed;

[0055] (10) The PLC controller controls the film pulling wheel system to deliver a length of one bag to the transport direction of the film roll, and then the equipment stops running.

[0056] After the start-up preparation is completed, the specific steps of the process of the operation of the equipment of the present application are as follows:

[0057] (1) The PLC controller controls the extension range of the telescopic cylinder so that the lower end of the vertical pipe is inserted into the lower part of the packaging bag;

[0058] (2) The PLC controller controls the feeding device to drop a certain amount of pet feed;

[0059] (3) The PLC controller controls the start of the two parallel finger cylinders, so that the two claws of each parallel finger cylinder are in close contact, so that the mechanical finger wrinkle reduction device presses the hollow tubular film;

[0060] (4) The PLC controller controls the extension range of the tension cylinder to be greater than 7 / 8 of the long axis of the hollow tubular film and less than 11 / 12 of the long axis of the hollow tubular film, so as to tension the hollow tubular film and eliminate wrinkles;

[0061] (5) The PLC controller controls the vacuumizing and pressing device to press the upper part of the packaging bag to isolate the to-be-transversely-sealed area from the lower part of the packaging bag;

[0062] (6) The PLC controller controls the opening degree of the air valve to make the vacuumizing device vacuumize the lower part in the packaging bag;

[0063] (7) The PLC controller controls the range of the extension cylinder to make the lower end of the vertical pipe separate from the packaging bag;

[0064] (8) The PLC controller simultaneously controls the vertical sealing mechanism and the transverse sealing mechanism, and after the transverse sealing mechanism finishes transverse sealing, the packaging bag is cut, and then the vertical sealing mechanism, the transverse sealing mechanism, the parallel finger cylinder and the tension cylinder are reset;

[0065] (9) The PLC controller controls the film winding wheel system to deliver a bag length in the transportation direction of the film;

[0066] (10) The steps (1)-(9) are cycled.

[0067] Advantages:

[0068] (1) The experimental animal feed packaging vacuumizing automatic vertical film winding packaging machine tightens the packaging bag opening through the mechanical finger wrinkle reducing device, eliminates the wrinkles of the packaging opening, improves the packaging quality, and when the transverse sealing iron seal is sealed, there is no wrinkle, reduces the risk of air leakage, and ensures the packaging effect.

[0069] (2) The experimental animal feed packaging vacuumizing automatic vertical film winding packaging machine adjusts the vacuumizing and pressing device to the front side of the mechanical finger wrinkle reducing device, so that the additional wrinkles generated by the bag contraction during vacuumizing do not affect the seaming, thereby avoiding wrinkles.

[0070] (3) The experimental animal feed packaging vacuumizing automatic vertical film winding packaging machine has simple structure, easy implementation and low cost. BRIEF DESCRIPTION OF DRAWINGS

[0071] Figure 1 It is a schematic diagram of the overall structure of the vacuumizing automatic vertical film winding packaging machine;

[0072] Figure 2 It is a schematic diagram of the structure of the mechanical finger wrinkle reducing device;

[0073] Figure 3 It is a schematic diagram of the cross section of the mechanical finger wrinkle reducing device;

[0074] Figure 4 A diagram showing the positional relationship between the mechanical finger wrinkle-reducing device, the horizontal sealing mechanism, and the vacuum pressing device;

[0075] Figure 5 This is a magnified view of a vacuum automatic vertical roll film packaging machine.

[0076] The components are as follows: 1-Main mounting frame, 1.1-Film guiding mechanism, 2-Bag forming device, 3-Vertical sealing mechanism, 4-Horizontal sealing mechanism, 5-Vacuuming device, 5.1-Vacuum pump, 5.2-Air valve, 5.3-Vacuum tank, 5.4-Telescopic cylinder, 5.5-Vacuum tube, 5.6-Vertical tube, 6-Mechanical finger wrinkle reduction device, 6.1-Tightening cylinder, 6.2-Cylinder connecting plate, 6.3-Parallel finger cylinder, 6.4-Mechanical arm connecting plate, 6.5-Mechanical arm, 6.6-Mechanical finger body, 6.7-Finger rubber sheet, 6.8-Air gripper, 7-Vacuuming and pressing device, 8-Horizontal mounting plate, 9-Discharging device, 10-Start-up button, 11-Run button, 12-PLC controller. Detailed Implementation

[0077] The present invention will be further described below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0078] An automatic vertical roll film packaging machine for laboratory animal feed, such as... Figure 1 As shown, it includes a main mounting frame 1 and a film guiding mechanism 1.1, a bag forming device 2, a vertical sealing mechanism 3, a film pulling wheel system, a horizontal sealing mechanism 4, a vacuum device 5, a mechanical finger wrinkle reduction device 6, a vacuum pressing device 7, a horizontal mounting plate 8, a feeding device 9, a start-up button 10, a run button 11, and a PLC controller 12.

[0079] Along the film rolling direction, the film guiding mechanism 1.1, the bag forming device 2, the vertical sealing mechanism 3, the film pulling wheel system, the horizontal sealing mechanism 4, and the vacuum pressing device 7 are arranged in sequence;

[0080] The lower end of the feeding device 9 is inserted into the bagging machine 2. The feeding device 9 is used to feed a fixed amount of pet food.

[0081] Bag forming device 2 is used to roll flat film into cylindrical film; vertical sealing mechanism 3 is used to vertically seal cylindrical film to form hollow tubular film; film pulling roller system is used to transport hollow tubular film towards horizontal sealing mechanism 4;

[0082] The horizontal installation plate 8 is fixedly connected with the installation main frame 1; the transverse sealing mechanism 4 is located below the horizontal installation plate 8 and is fixedly connected with the horizontal installation plate 8;

[0083] The horizontal installation plate 8 is provided with a rectangular through hole, which is used for conveniently conveying the hollow tubular film from the film pulling wheel system to the transverse sealing mechanism 4;

[0084] The transverse sealing mechanism 4 comprises a transverse sealing hot knife and a transverse sealing cutting knife; the transverse sealing hot knife is used for intermittently sealing the hollow tubular film; along the conveying direction of the hollow tubular film, the region of the hollow tubular film to be sealed is referred to as a to-be-sealed region; the transverse sealing cutting knife is used for cutting the to-be-sealed region after being sealed;

[0085] As shown in Figures 2-5 The mechanical finger reducing wrinkle device 6 comprises two mechanical finger mechanisms; the mechanical finger mechanism comprises a tensioning cylinder 6.1, a cylinder connecting plate 6.2, a parallel finger cylinder 6.3, two mechanical arm connecting plates 6.4, four mechanical arms 6.5 and four mechanical finger bodies 6.6;

[0086] The tensioning cylinder 6.1 comprises a sliding plate and a piston rod; the sliding plate and the piston rod are fixedly connected; the piston rod of the tensioning cylinder 6.1 is fixedly connected with the cylinder connecting plate 6.2 through the sliding plate;

[0087] The mechanical finger reducing wrinkle device 6 is located below the horizontal installation plate 8; the cylinder base of the tensioning cylinder 6.1 is fixedly connected with the horizontal installation plate 8; the cylinder connecting plate 6.2 is fixedly connected with the cylinder base of the parallel finger cylinder 6.3; the mechanical arm connecting plate 6.4 is a long strip-shaped vertical plate; the two mechanical arm connecting plates 6.4 are respectively fixedly connected with one claw 6.8 of the parallel finger cylinder 6.3;

[0088] When the tensioning cylinder 6.1 is not started, the piston rod of the tensioning cylinder 6.1 is at the maximum range; when the parallel finger cylinder 6.3 is not started, the distance between the two claws 6.8 of the parallel finger cylinder 6.3 is the maximum distance;

[0089] The mechanical arm 6.5 is a horizontally placed rectangular block I, and the mechanical finger body 6.6 is a horizontally placed rectangular block II; the length of the rectangular block I is greater than that of the rectangular block II;

[0090] The four mechanical arms 6.5 are respectively referred to as a mechanical arm I, a mechanical arm II, a mechanical arm III and a mechanical arm IV; the four mechanical finger bodies 6.6 are respectively referred to as a mechanical finger body I, a mechanical finger body II, a mechanical finger body III and a mechanical finger body IV; the two mechanical arm connecting plates are respectively referred to as a mechanical arm connecting plate I and a mechanical arm connecting plate II;

[0091] The upper end of the mechanical arm connecting plate I is connected with one end of the mechanical arm I, and the lower end of the mechanical arm connecting plate I is connected with one end of the mechanical arm II; the upper end of the mechanical arm connecting plate II is connected with one end of the mechanical arm III, and the lower end of the mechanical arm connecting plate II is connected with one end of the mechanical arm IV; the mechanical finger body I is fixed on the mechanical arm I, the mechanical finger body II is fixed on the mechanical arm II, the mechanical finger body III is fixed on the mechanical arm III, and the mechanical finger body IV is fixed on the mechanical arm IV; the mechanical finger body I is arranged opposite to the mechanical finger body III, and the lower surfaces of the mechanical finger body I and the mechanical finger body III are on the same plane; the mechanical finger body II is arranged opposite to the mechanical finger body IV, and the upper surfaces of the mechanical finger body II and the mechanical finger body IV are on the same plane; the opposite sides of the mechanical finger body I and the mechanical finger body III are respectively fixed with a finger rubber sheet 6.7, which are denoted as a finger rubber sheet I and a finger rubber sheet III; the opposite sides of the mechanical finger body II and the mechanical finger body IV are respectively fixed with a finger rubber sheet 6.7, which are denoted as a finger rubber sheet II and a finger rubber sheet IV;

[0092] The tension cylinders 6.1 of the two mechanical finger mechanisms are arranged opposite to each other; the cross section of the hollow tubular film is an ellipse, and the long axis direction of the ellipse is the same as the length direction of the transverse sealing knife; when the piston rods of the tension cylinders 6.1 of the two mechanical finger mechanisms are at the maximum range, the distance between the finger rubber sheets I of the two mechanical finger mechanisms is less than 7 / 8 of the long axis of the hollow tubular film and greater than 2 / 3 of the long axis of the hollow tubular film; when the piston rods of the tension cylinders 6.1 of the two mechanical finger mechanisms are at the minimum range, the distance between the finger rubber sheets I of the two mechanical finger mechanisms is greater than 7 / 8 of the long axis of the hollow tubular film and less than 11 / 12 of the long axis of the hollow tubular film;

[0093] When the two gas claws 6.8 of the parallel finger cylinder 6.3 are in close contact, the finger rubber sheet I is in close contact with the finger rubber sheet III, and the finger rubber sheet II is in close contact with the finger rubber sheet IV;

[0094] Along the running direction of the film, the finger rubber sheets I and III of the two mechanical finger mechanisms are located at the rear side of the transverse sealing knife of the transverse sealing mechanism 4, and the finger rubber sheets II and IV are located at the front side of the transverse sealing knife of the transverse sealing mechanism 4;

[0095] Along the conveying direction of the hollow tubular film, the mechanical finger wrinkle reduction device 6 is used to simultaneously stretch the front side and the rear side of the to-be-sealed area, so that the inner walls of the hollow tubular film between the front side and the rear side of the to-be-sealed area are in close contact; the stretching directions of the front side and the rear side of the to-be-sealed area are the same as the length direction of the transverse sealing knife; when the transverse sealing knife seals the hollow tubular film, the front side and the rear side of the to-be-sealed area are in a stretched state;

[0096] The vacuumizing device 5 comprises a vacuum pump 5.1, an air valve 5.2, a vacuum tank 5.3, an extension air cylinder 5.4, a vacuum tube 5.5 and a vertical tube 5.6;

[0097] The extension air cylinder 5.4 is fixed on the installation main frame 1, the upper part of the vertical tube 5.6 is fixedly connected with the extension air cylinder 5.4, and the extension air cylinder 5.4 is used to drive the vertical tube 5.6 to move up and down; the lower end of the vertical tube 5.6 is used to be inserted into the lower part of the packaging bag, the upper end of the vertical tube 5.6 is connected with one end of the vacuum tube 5.5, the other end of the vacuum tube 5.5 is connected with the vacuum tank 5.3; the vacuum tank 5.3 is connected with the vacuum pump 5.1;

[0098] A vacuum electric contact pressure gauge is arranged in the vacuum tank 5.3, and the vacuum electric contact pressure gauge is electrically connected with the vacuum pump 5.1; the vacuum electric contact pressure gauge is used to detect the vacuum degree in the vacuum tank 5.3, and when the vacuum degree in the vacuum tank 5.3 is lower than the lower limit value of the set range of the vacuum degree on the vacuum electric contact pressure gauge, the vacuum electric contact pressure gauge controls the vacuum pump 5.1 to start; when the vacuum degree in the vacuum tank 5.3 is higher than the upper limit value of the set range of the vacuum degree on the vacuum electric contact pressure gauge after the vacuum pump 5.1 starts, the vacuum electric contact pressure gauge controls the vacuum pump 5.1 to stop;

[0099] The hollow tubular film between the two adjacent to-be-transversely-sealed areas is a packaging bag, along the running direction of the film, the vacuumizing and compressing device 7 is located on the front side of the mechanical finger reducing device, and the vacuumizing and compressing device 7 is used to compress the upper part of the packaging bag to isolate the to-be-transversely-sealed area from the lower part of the packaging bag; the vacuumizing device 5 is used to vacuumize the lower part in the packaging bag;

[0100] Along the running direction of the film, the distance between the vertical sealing mechanism 3 and the transverse sealing mechanism 4 is less than the bag length of the packaging bag, and the vertical sealing length of the vertical sealing mechanism 3 is greater than the bag length of the packaging bag;

[0101] The blanking device 9, the transverse sealing mechanism 4, the vertical sealing mechanism 3, the film pulling wheel system, the tension air cylinder 6.1, the parallel finger air cylinder 6.3, the air valve 5.2 and the extension air cylinder 5.4 are electrically connected with the PLC controller 12 respectively; the PLC controller 12 is used to control the extension and retraction ranges of the piston rods of the tension air cylinder 6.1, the parallel finger air cylinder 6.3 and the extension air cylinder 5.4; the PLC controller 12 is used to control the opening degree of the air valve 5.2 so that the vacuumizing device 5 vacuums the lower part in the packaging bag;

[0102] The PLC controller 12 is electrically connected with the start preparation button 10, and the start preparation button 10 is used to prepare the start through the PLC controller 12; the start preparation is used to prepare an empty packaging bag;

[0103] The PLC controller 12 is electrically connected with the running button 11, and the running button 11 is used for running the equipment through the PLC controller 12; the equipment running is used for continuously producing the vacuum packaging bag containing the experimental animal feed;

[0104] In the process of starting preparation or equipment running, before the PLC controller 12 controls the air valve 5.2, the PLC controller 12 first controls the two parallel finger air cylinders 6.3 to clamp the hollow tubular film, then controls the retracting rod of the tensioning air cylinder 6.1 to retract so as to stretch the hollow tubular film, and then controls the vacuumizing and pressing device 7 to press the upper part of the packaging bag;

[0105] In the process of starting preparation or equipment running, after the PLC controller 12 controls the transverse sealing cutter to cut, the PLC controller 12 controls the parallel finger air cylinder 6.3 and the tensioning air cylinder 6.1 to reset in sequence.

[0106] Specific use process: manually pull the film to the front side of the film stretching wheel system, after the film is installed, press the starting preparation button 10, and the specific steps of starting preparation are as follows:

[0107] (1) The PLC controller 12 first controls the vertical sealing mechanism 3 to vertically seal, after the vertical sealing mechanism 3 resets, the PLC controller 12 controls the film stretching wheel system to transport a bag length in the transportation direction of the film;

[0108] (2) The PLC controller 12 controls the vertical sealing mechanism 3 and the transverse sealing mechanism 4 to vertically seal and transversely seal at the same time, after the vertical sealing mechanism 3 and the transverse sealing mechanism 4 reset, the PLC controller 12 controls the film stretching wheel system to transport a bag length in the transportation direction of the film again, so as to form a packaging bag with an opening facing the film stretching wheel system;

[0109] (3) The PLC controller 12 controls the range of the telescopic air cylinder 5.4 so that the lower end of the vertical pipe 5.6 is inserted into the lower part of the packaging bag;

[0110] (4) The PLC controller 12 controls the two parallel finger air cylinders 6.3 to start, so that the two claws 6.8 of each parallel finger air cylinder 6.3 are tightly attached, so that the mechanical finger wrinkle reducing device 6 presses the hollow tubular film;

[0111] (5) The PLC controller 12 controls the telescopic range of the tensioning air cylinder 6.1 to be greater than 7 / 8 of the long axis of the hollow tubular film and less than 11 / 12 of the long axis of the hollow tubular film, so as to tension the hollow tubular film to eliminate wrinkles;

[0112] (6) The PLC controller 12 controls the vacuumizing and pressing device 7 to press the upper part of the packaging bag to isolate the to-be-transversely-sealed area from the lower part of the packaging bag;

[0113] (7) PLC controller 12 controls the opening of air valve 5.2 to make vacuum device 5 to vacuum the lower part of the packaging bag;

[0114] (8) PLC controller 12 controls the range of telescopic air cylinder 5.4 to make the lower end of vertical pipe 5.6 to be separated from the packaging bag;

[0115] (9) PLC controller 12 controls vertical sealing mechanism 3 to vertically seal and horizontal sealing mechanism 4 to horizontally seal at the same time, then controls horizontal sealing cutter to cut, and then controls vertical sealing mechanism 3, horizontal sealing mechanism 4, parallel finger air cylinder 6.3 and tension air cylinder 6.1 to reset; wherein, after the horizontal sealing is finished, the bag is cut to make an empty bag, and meanwhile, the bottom of the next packaging bag is sealed;

[0116] (10) PLC controller 12 controls film pulling wheel system to deliver a bag length to the transport direction of the film roll, and then the equipment stops running.

[0117] When the run button 11 is pressed again, the specific steps of the running process are as follows:

[0118] (1) PLC controller 12 controls the range of telescopic air cylinder 5.4 to make the lower end of vertical pipe 5.6 to be inserted into the lower part of the packaging bag;

[0119] (2) PLC controller 12 controls the feeding device 9 to drop a certain amount of pet feed;

[0120] (3) PLC controller 12 controls two parallel finger air cylinders 6.3 to start, so that the two air claws 6.8 of each parallel finger air cylinder 6.3 are in close contact, so that the mechanical finger wrinkle reducing device 6 presses the hollow tubular film;

[0121] (4) PLC controller 12 controls the telescopic range of tension air cylinder 6.1 to be greater than 7 / 8 of the long axis of the hollow tubular film and less than 11 / 12 of the long axis of the hollow tubular film, so as to tension the hollow tubular film to eliminate wrinkles;

[0122] (5) PLC controller 12 controls vacuum compression device 7 to compress the upper part of the packaging bag to isolate the to-be-sealed area from the lower part of the packaging bag;

[0123] (6) PLC controller 12 controls the opening of air valve 5.2 to make vacuum device 5 to vacuum the lower part of the packaging bag;

[0124] (7) PLC controller 12 controls the range of telescopic air cylinder 5.4 to make the lower end of vertical pipe 5.6 to be separated from the packaging bag;

[0125] (8) PLC controller 12 controls vertical sealing mechanism 3 to vertically seal and horizontal sealing mechanism 4 to horizontally seal at the same time, and after the horizontal sealing mechanism 4 finishes horizontal sealing, the bag is cut, and then vertical sealing mechanism 3, horizontal sealing mechanism 4, parallel finger air cylinder 6.3 and tension air cylinder 6.1 are reset;

[0126] (9) The PLC controller 12 controls the film pulling wheel system to deliver a bag length of length in the direction of the film winding;

[0127] (10) Repeat steps (1) ~ (9).

Claims

1. A vacuum automatic vertical roll film packaging machine for laboratory animal feed packaging, characterized in that: It includes a main frame and a film guiding mechanism, a bag forming unit, a vertical sealing mechanism, a film pulling roller system, a horizontal sealing mechanism, a vacuum device, and a mechanical finger wrinkle reduction device mounted on the main frame; along the film winding direction, the film guiding mechanism, the bag forming unit, the vertical sealing mechanism, the film pulling roller system, and the horizontal sealing mechanism are arranged in sequence; The bag-forming device is used to roll flat films into cylindrical films; the vertical sealing mechanism is used to vertically seal the cylindrical films to form hollow tubular films; the film-pulling roller system is used to transport the hollow tubular films towards the horizontal sealing mechanism; The horizontal sealing mechanism includes a horizontal sealing hot knife and a horizontal sealing cutter. The horizontal sealing hot knife is used to intermittently horizontally seal the hollow tubular film, and the horizontal sealing cutter is used to cut the area to be horizontally sealed after it has been horizontally sealed. Along the conveying direction of the hollow tubular film, the mechanical finger wrinkle-reducing device is used to simultaneously stretch the front and rear sides of the area to be horizontally sealed, so that the inner walls of the hollow tubular film between the front and rear sides of the area to be horizontally sealed adhere to each other; the stretching directions of the front and rear sides of the area to be horizontally sealed are the same as the length direction of the horizontal sealing hot knife; when the horizontal sealing hot knife performs horizontal sealing on the hollow tubular film, the front and rear sides of the area to be horizontally sealed are in a stretched state; The hollow tubular film between two adjacent areas to be sealed forms a packaging bag, and the vacuum device is used to vacuum the inside of the packaging bag.

2. The automatic vertical roll film packaging machine for laboratory animal feed according to claim 1, characterized in that, The automatic vertical roll film packaging machine for laboratory animal feed also includes a vacuum pressing device; the vacuum pressing device is installed on the main frame; along the film rolling direction, the film guiding mechanism, bag forming device, vertical sealing mechanism, film pulling roller system, horizontal sealing mechanism and vacuum pressing device are arranged in sequence. Along the direction of film roll operation, the vacuum pressing device is located in front of the mechanical finger wrinkle reduction device. The vacuum pressing device is used to press the upper part of the packaging bag to isolate the area to be horizontally sealed from the lower part of the packaging bag; the vacuum device is used to vacuum the lower part of the packaging bag.

3. The automatic vertical roll film packaging machine for laboratory animal feed according to claim 2, characterized in that, The automatic vertical roll wrapping machine for vacuuming laboratory animal feed also includes a horizontal mounting plate. The horizontal mounting plate is fixedly connected to the main mounting frame; the mechanical finger wrinkle-reducing device and the horizontal sealing mechanism are both located below the horizontal mounting plate and are fixedly connected to the horizontal mounting plate. The horizontal mounting plate is provided with rectangular through holes, which are used to facilitate the transport of hollow tubular films from the film pulling roller system to the horizontal sealing mechanism.

4. The automatic vertical roll film packaging machine for laboratory animal feed according to claim 3, characterized in that, The robotic finger wrinkle reduction device includes two robotic finger mechanisms; each robotic finger mechanism includes a tensioning cylinder, a cylinder connecting plate, a parallel finger cylinder, two robotic arm connecting plates, four robotic arms, and four robotic finger bodies; The cylinder base of the tensioning cylinder is fixedly connected to the horizontal mounting plate, and the piston rod of the tensioning cylinder is fixedly connected to the cylinder connecting plate; the cylinder connecting plate is fixedly connected to the cylinder base of the parallel finger cylinder; the robotic arm connecting plate is a long strip vertical plate; each of the two robotic arm connecting plates is fixedly connected to one of the grippers of the parallel finger cylinder. When the tensioning cylinder is not activated, the piston rod of the tensioning cylinder is at its maximum range; when the parallel finger cylinder is not activated, the distance between the two grippers of the parallel finger cylinder is at its maximum distance. The robotic arm is a horizontally placed rectangular block I, and the robotic finger is a horizontally placed rectangular block II; the length of rectangular block I is greater than that of rectangular block II; The four robotic arms are designated as Robotic Arm I, Robotic Arm II, Robotic Arm III, and Robotic Arm IV; the four robotic fingers are designated as Robotic Finger I, Robotic Finger II, Robotic Finger III, and Robotic Finger IV; and the two robotic arm connecting plates are designated as Robotic Arm Connecting Plate I and Robotic Arm Connecting Plate II. The upper end of robotic arm connecting plate I is connected to one end of robotic arm I, and the lower end of robotic arm connecting plate I is connected to one end of robotic arm II; the upper end of robotic arm connecting plate II is connected to one end of robotic arm III, and the lower end of robotic arm connecting plate II is connected to one end of robotic arm IV; robotic finger I is fixed on robotic arm I, robotic finger II is fixed on robotic arm II, robotic finger III is fixed on robotic arm III, and robotic finger IV is fixed on robotic arm IV; robotic finger I and robotic finger III are arranged opposite to each other, and their lower surfaces are on the same plane; robotic finger II and robotic finger IV are arranged opposite to each other, and their upper surfaces are on the same plane; a finger rubber piece is fixed to the opposite sides of robotic finger I and robotic finger III, denoted as finger rubber piece I and finger rubber piece III; a finger rubber piece is fixed to the opposite sides of robotic finger II and robotic finger IV, denoted as finger rubber piece II and finger rubber piece IV. The tensioning cylinders of the two mechanical finger mechanisms are arranged opposite each other; the cross-section of the hollow tubular film is elliptical, and the major axis of the ellipse is in the same direction as the length of the horizontal sealing hot knife; when the piston rods of the tensioning cylinders of the two mechanical finger mechanisms are at their maximum range, the distance between the rubber sheets I of the two mechanical finger mechanisms is less than 7 / 8 of the major axis of the hollow tubular film and greater than 2 / 3 of the major axis of the hollow tubular film; when the piston rods of the tensioning cylinders of the two mechanical finger mechanisms are at their minimum range, the distance between the rubber sheets I of the two mechanical finger mechanisms is greater than 7 / 8 of the major axis of the hollow tubular film and less than 11 / 12 of the major axis of the hollow tubular film; When the two pneumatic grippers of the parallel finger cylinder are in close contact, finger rubber sheet I and finger rubber sheet III are in close contact, and finger rubber sheet II and finger rubber sheet IV are in close contact. Along the direction of film rolling, finger rubber sheet I and finger rubber sheet III are located behind the horizontal sealing heat knife, while finger rubber sheet II and finger rubber sheet IV are located in front of the horizontal sealing heat knife.

5. The automatic vertical roll film packaging machine for laboratory animal feed according to claim 4, characterized in that, The tensioning cylinder includes a slide plate; the slide plate and the piston rod are fixedly connected; the piston rod of the tensioning cylinder is fixedly connected to the cylinder connecting plate through the slide plate.

6. The automatic vertical roll film packaging machine for laboratory animal feed according to claim 5, characterized in that, The vacuum pumping device includes a vacuum pump, a gas valve, a vacuum tank, a telescopic cylinder, a vacuum tube, and a vertical pipe; The telescopic cylinder is fixed on the main mounting frame. The upper part of the vertical tube is fixedly connected to the telescopic cylinder, which is used to drive the vertical tube to move up and down. The lower end of the vertical tube is used to insert into the lower part of the packaging bag. The upper end of the vertical tube is connected to one end of the vacuum tube, and the other end of the vacuum tube is connected to the vacuum tank. The vacuum tank is connected to the vacuum pump. The vacuum tank is equipped with a vacuum electric contact pressure gauge, which is electrically connected to the vacuum pump. The vacuum electric contact pressure gauge is used to detect the vacuum level inside the vacuum tank. When the vacuum level inside the vacuum tank is lower than the lower limit of the vacuum level set on the vacuum electric contact pressure gauge, the vacuum electric contact pressure gauge controls the vacuum pump to start. When the vacuum pump starts and the vacuum level inside the vacuum tank is higher than the upper limit of the vacuum level set on the vacuum electric contact pressure gauge, the vacuum electric contact pressure gauge controls the vacuum pump to shut down.

7. The automatic vertical roll film packaging machine for laboratory animal feed according to claim 6, characterized in that, The automatic vertical roll film packaging machine for laboratory animal feed also includes a feeding device; the lower end of the feeding device is inserted into the bag forming machine, and the feeding device is used to feed a fixed amount of pet food.

8. The automatic vertical roll film packaging machine for laboratory animal feed according to claim 7, characterized in that, Along the direction of film roll operation, the distance between the vertical sealing mechanism and the horizontal sealing mechanism is less than the length of the packaging bag, and the length of the vertical seal of the vertical sealing mechanism is greater than the length of the packaging bag.

9. The automatic vertical roll film packaging machine for laboratory animal feed according to claim 8, characterized in that, The automatic vertical roll film packaging machine for laboratory animal feed also includes a PLC controller; the tension cylinder, parallel finger cylinder, air valve and telescopic cylinder are electrically connected to the PLC controller; the PLC controller is used to control the extension and retraction range of the piston rods of the tension cylinder, parallel finger cylinder and telescopic cylinder; the PLC controller is used to control the opening of the air valve so that the vacuum device vacuums the lower part of the packaging bag. Before the PLC controller controls the air valve, it first controls two parallel finger cylinders to clamp the hollow tubular film, then controls the telescopic rod of the tensioning cylinder to retract, thereby stretching the hollow tubular film, and then controls the vacuum pressing device to press the upper part of the packaging bag. After the PLC controller controls the horizontal sealing cutter to cut, it controls the parallel finger cylinder and the tensioning cylinder to reset sequentially.

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