An automatic film packaging machine for culture medium production

Abstract

The present invention belongs to the technical field of microbial culture, and specifically relates to an automatic film-wrapping packaging machine for culture medium production, comprising a cutting unit, including a conveying mechanism and a film-cutting mechanism, for cutting a heat-shrinkable film at equal intervals; an automatic film-wrapping unit, including a film-wrapping mechanism and a positioning mechanism, for wrapping the cut heat-shrinkable film on the outside of a vessel; a heat-shrinking unit, including a clamping mechanism and a heat-shrinking furnace, for taking out the film-wrapped vessel and transferring it to the heat-shrinking furnace, for shrinking the heat-shrinkable film on the surface of the vessel by heat; wherein a feeding mechanism with a positioning function is provided on one side of the automatic film-wrapping unit, for pushing the vessel into the positioning mechanism, thereby overcoming the shortcomings of the prior art, and the film-wrapping packaging machine has a high degree of automation, reduces personnel costs and labor, greatly improves production efficiency and production technology level, and has a compact overall design of the equipment, reducing the floor space.

Description

Technical Field

[0001] The invention belongs to the technical field of microbial culture, and in particular relates to an automatic film packaging machine for culture medium production. Background Art

[0002] At present, packaging is a difficult problem in the production process of culture medium. There are basically two ways at present. One is manual packaging, which is to cut the heat shrink film into a certain length, then put it on the container manually, and finally put the container into the heat shrink oven by hand for heat shrink molding, so that the heat shrink film is tightly wrapped on the outer surface of the container. This method is not only labor-intensive, low in production efficiency, time-consuming and labor-intensive, but also the high temperature of about 150 degrees in the heat shrink oven can easily burn the arm.

[0003] There are also some automatic shrink film packaging machines on the market, but they all use the flat film wrapping method for packaging. The main components are the container supply conveyor chain, container separation conveyor section, bottle separation mechanism, push mechanism, sorting conveyor section, film wrapping mechanism, packaging output mechanism, shrink film supply system, shrink oven, rapid cooling air duct, etc. Although this method can package containers, bottles and other items, the actual object must be placed flat on the shrink film during the packaging process, and then the shrink film is closed from both sides by a mechanical device to wrap the object, and finally the excess film material on both sides of the joint is electrically hot-stamped and sent to the shrink oven for shrinking. The disadvantages of this method are that the assembly line occupies too much space, the process is cumbersome, and the equipment is complex, resulting in large capital investment, high production costs, and unsightly packaging. Summary of the invention

[0004] The purpose of the present invention is to provide an automatic film packaging machine for culture medium production, which overcomes the shortcomings of the prior art. The film packaging machine has a high degree of automation, reduces personnel costs and labor, greatly improves production efficiency and production technology level, and the overall design of the equipment is compact, reducing the footprint.

[0005] To solve the above problems, the technical solutions adopted by the present invention are as follows:

[0006] An automatic film packaging machine for culture medium production, comprising

[0007] The cutting unit includes a conveying mechanism and a film cutting mechanism, and is used for cutting the heat shrink film at equal intervals;

[0008] The automatic film covering unit includes a film covering mechanism and a positioning mechanism, so that the cut heat shrink film is covered on the outside of the container;

[0009] The heat shrink unit includes a clamping mechanism and a heat shrinking furnace, which takes out the film-covered container and transfers it to the heat shrinking furnace, so that the heat shrinking film shrinks on the surface of the container;

[0010] Among them, a feeding mechanism with a positioning function is arranged on one side of the automatic film covering unit to push the vessel into the positioning mechanism.

[0011] Furthermore, the conveying mechanism includes a film disc rack wrapped with a heat shrink film, traction wheels respectively attached to the upper and lower sides of the heat shrink film, a driving motor for driving the traction wheel to rotate, and a supporting wheel to keep the heat shrink film horizontal; the film cutting mechanism includes a base, a bracket fixed on the base, a cutting cylinder installed on the top of the bracket, and a blade fixed on the telescopic end of the bottom of the cutting cylinder; a cutting groove adapted to the blade is provided on the upper surface of the base; and the base, traction wheel and supporting wheel have the same height.

[0012] Furthermore, the length of the blade is smaller than the width of the heat shrinkable film, and there are connecting ribs with a width of 2-4 mm between the heat shrinkable films after cutting.

[0013] Furthermore, the conveying mechanism includes a meter wheel attached to the upper surface of the heat shrink film, a sensing hole opened on the surface of the meter wheel, a photoelectric switch arranged on one side of the meter wheel, and a film pressing sensor installed between the meter wheel and the traction wheel. The photoelectric switch is used to control the opening and closing of the cutting cylinder. The film pressing sensor is located below the heat shrink film and is used to detect whether there is a heat shrink film passing above it.

[0014] Furthermore, the film sleeve mechanism includes a guide cylinder, a workbench and a positioning cylinder fixed on the workbench, the positioning cylinder is located directly below the guide cylinder, a mechanical clamping mechanism is arranged on one side of the guide cylinder, the positioning cylinder includes a hollow cylinder body and a positioning seat fixed on the bottom end of the cylinder body, the cylinder body and the positioning seat are both fixed on the workbench, and there is a gap between the positioning seat and the inner wall of the cylinder body, the front and rear ends of the positioning cylinder are provided with feed ports, the feed ports are adapted to the size of the vessel, the positioning mechanism includes positioning cylinders respectively arranged on both sides of the positioning cylinder, the surface of the positioning cylinder is provided with positioning holes adapted to the positioning cylinder, and the two side surfaces of the positioning cylinder are provided with positioning holes adapted to the positioning cylinder.

[0015] Furthermore, the mechanical clamping mechanism includes an intelligent arm A and a mechanical clamping hand fixed to one end of the intelligent arm A close to the guide tube. The clamping manipulator is clamped on the outside of the guide tube, and an elastic pad is provided on the palm of the clamping manipulator.

[0016] Furthermore, the feeding mechanism includes a conveyor belt for transporting containers, a pushing cylinder and a photoelectric sensor arranged on the side of the conveyor belt away from the workbench, the pushing cylinder is used to push the containers on the conveyor belt into the positioning cylinder, and the upper surface of the positioning seat is flush with the surface of the conveyor belt.

[0017] Furthermore, the clamping mechanism includes an intelligent arm B and a pneumatic clamping device fixed at one end of the intelligent arm B. A clamping groove that penetrates the cylinder transversely is opened on the cylinder, and the clamping groove penetrates the positioning seat. The clamping device extends into the positioning cylinder through the clamping groove. After clamping, the vessel is taken out of the positioning cylinder and transferred into the heat shrinking furnace.

[0018] Furthermore, the clamping device includes an L-shaped fixing frame, a movable rod hinged on the top of the fixing frame, a clamping cylinder fixed on the fixing frame, a limit block fixed on the top of the clamping cylinder, and a limit hole passing through the limit block, the movable rod passes through the limit hole, and the height of the limit hole is greater than the height of the movable rod, and elastic clamping blocks are respectively fixed at one end of the fixing frame and the movable rod away from the hinge, and when the movable rod is in a horizontal state, the distance between the two clamping blocks is the same as the height of the vessel.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The sleeve packaging machine has a high degree of automation, which reduces personnel costs and labor, greatly improves production efficiency and production technology level, and the overall design of the equipment is compact, reducing the footprint; it uses sleeve-type heat shrink film for packaging, with no seams on the surface, neat and beautiful. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of an automatic film packaging machine for culture medium production.

[0022] Figure 2 A top view of an automatic film packaging machine for culture medium production.

[0023] Figure 3 This is a schematic diagram of the structure of the film-wrapping mechanism in an automatic film-wrapping packaging machine for culture medium production.

[0024] Figure 4 The present invention is a schematic diagram of the structure of a positioning cylinder in an automatic film packaging machine for culture medium production.

[0025] Figure 5 This is a schematic diagram of the enlarged structure of point A in an automatic film packaging machine for culture medium production.

[0026] Figure 6 A schematic diagram of the structure of the clamping device in an automatic film packaging machine for culture medium production

[0027] In the figure: 1. heat shrink film; 2. film plate rack; 3. meter wheel; 4. induction hole; 5. film pressing sensor; 6. traction wheel; 7. cutting cylinder; 8. bracket; 9. blade; 10. base; 11. support wheel; 12. intelligent arm B; 13. guide cylinder; 14. positioning cylinder; 1401. clamping groove; 1402. positioning seat; 1403. feeding port; 1404. cylinder; 15. positioning cylinder; 16. Photoelectric switch; 17. servo motor; 18. heat shrink furnace; 19. workbench; 20. container; 21. conveyor belt; 22. push cylinder; 23. photoelectric sensor; 24. intelligent arm A; 25. clamping manipulator; 26. clamping device; 2601. fixing frame; 2602. movable rod; 2603. clamping cylinder; 2604. limit block; 2605. limit hole; 2606. clamping block. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] like Figure 1-6 As shown, the automatic film packaging machine for culture medium production of the present invention comprises

[0030] The cutting unit includes a conveying mechanism and a film cutting mechanism, and is used to cut the heat shrink film 1 at equal intervals;

[0031] The automatic film covering unit includes a film covering mechanism and a positioning mechanism, so that the cut heat shrink film 1 is covered on the outside of the container 20;

[0032] The heat shrink unit includes a clamping mechanism and a heat shrinking furnace 18, which takes out the film-coated container 20 and transfers it to the heat shrinking furnace 18, so that the heat shrinking film shrinks on the surface of the container 20;

[0033] A feeding mechanism with a positioning function is provided on one side of the automatic film covering unit, and the vessel 20 is pushed into the positioning mechanism.

[0034] The conveying mechanism includes a film drum rack 2 with a heat shrink film 1 wrapped around it, traction wheels 6 respectively attached to the upper and lower sides of the heat shrink film 1, a driving motor for driving the traction wheel 6 to rotate, and a supporting wheel 11 for keeping the heat shrink film 1 horizontal. The film cutting mechanism includes a base 10, a bracket 8 fixed on the base 10, a cutting cylinder 7 installed on the top of the bracket 8, and a blade 9 fixed at the telescopic end of the bottom of the cutting cylinder 7. A cutting groove adapted to the blade 9 is provided on the upper surface of the base 10, and the base 10, the traction wheel 6 and the supporting wheel 11 have the same height.

[0035] The length of the blade 9 is smaller than the width of the heat shrinkable film 1 , and there are connecting ribs with a width of 2-4 mm between the heat shrinkable films 1 after cutting.

[0036] The conveying mechanism includes a meter wheel 3 attached to the upper surface of the heat shrink film 1, a sensing hole 4 opened on the surface of the meter wheel 3, a photoelectric switch 16 arranged on one side of the meter wheel 3 and a film pressing sensor 5 installed between the meter wheel 3 and the traction wheel 6. The photoelectric switch 16 is used to control the opening and closing of the cutting cylinder 7. The film pressing sensor 5 is located below the heat shrink film 1 and is used to detect whether there is a heat shrink film 1 passing above. In addition, an alarm can be installed on the conveying mechanism. When the film pressing sensor 5 detects that the heat shrink film 1 is used up, an alarm is issued to remind the staff to replace the heat shrink film 1.

[0037] The film sleeve mechanism includes a guide cylinder 13, a workbench 19 and a positioning cylinder 14 fixed on the workbench 19, the positioning cylinder 14 is located directly below the guide cylinder 13, and a mechanical clamping mechanism is arranged on one side of the guide cylinder 13. The positioning cylinder 14 includes a hollow cylinder 1404 and a positioning seat 1402 fixed at the bottom end of the cylinder 1404. The cylinder 1404 and the positioning seat 1402 are both fixed on the workbench 19, and there is a gap between the positioning seat 1402 and the inner wall of the cylinder 1404. The front and rear ends of the positioning cylinder 14 are provided with feed ports 1403, and the feed ports 1403 are adapted to the size of the vessel 20. The positioning mechanism includes positioning cylinders 15 respectively arranged on both sides of the positioning cylinder 14, the surface of the positioning cylinder 14 is provided with positioning holes adapted to the positioning cylinder 15, and the surfaces of both sides of the positioning cylinder 14 are provided with positioning holes adapted to the positioning cylinder 15.

[0038] The mechanical clamping mechanism includes an intelligent arm A24 and a mechanical clamping hand fixed to one end of the intelligent arm A24 near the guide tube 13. The clamping manipulator 25 is clamped on the outside of the guide tube 13, and an elastic pad is provided on the palm of the clamping manipulator 25, which has a certain flexibility and is conducive to semi-tightly grasping the heat shrinkable film 1, which can drive the heat shrinkable film 1 to slide downward without being too clamped and stuck and unable to slide down.

[0039] The feeding mechanism includes a conveyor belt 21 for transmitting vessels 20, a pushing cylinder 22 and a photoelectric sensor 23 arranged on the side of the conveyor belt 21 away from the workbench 19. The pushing cylinder 22 is used to push the vessel 20 on the conveyor belt 21 into the positioning cylinder 14. The upper surface of the positioning seat 1402 is flush with the surface of the conveyor belt 21. In order to facilitate the pushing of the cylindrical vessel 20, a V-shaped push plate is provided at the telescopic end of the pushing cylinder 22.

[0040] The clamping mechanism includes an intelligent arm B12 and a pneumatic clamping device 26 fixed at one end of the intelligent arm B12. A clamping groove 1401 is provided on the cylinder 1404 and passes through the cylinder 1404 horizontally. The clamping groove 1401 passes through the positioning seat 1402. The clamping device 26 extends into the positioning cylinder 14 through the clamping groove 1401. After clamping, the vessel 20 is taken out of the positioning cylinder 14 and transferred into the heat shrinking furnace 18.

[0041] like Figure 6 As shown, the clamping device 26 includes an L-shaped fixed frame 2601, a movable rod 2602 hinged on the top of the fixed frame 2601, a clamping cylinder 2603 fixed on the fixed frame 2601, a limit block 2604 fixed on the top of the clamping cylinder 2603, and a limit hole 2605 passing through the limit block 2604. The movable rod 2602 passes through the limit hole 2605, and the height of the limit hole 2605 is greater than the height of the movable rod 2602. Elastic clamping blocks 2606 are respectively fixed at one end of the fixed frame 2601 and the movable rod 2602 away from the hinge. When the movable rod 2602 is in a horizontal state, the distance between the two clamping blocks 2606 is the same as the height of the vessel 20.

[0042] The automatic film packaging machine for culture medium production described in the present invention has the following specific working steps:

[0043] (1) Cutting the heat shrink film at equal distances

[0044] First, in the film delivery section, the heat shrink film 1 rolled into a flat sleeve is measured by the meter wheel 3 from the film reel rack 2, and then transported to the film cutting section by the traction wheel 6. The blade 9 is driven downward to cut the heat shrink film 1 under the action of the cutting cylinder 7. The blade 9 is intermittent and does not completely cut the film material. There are 2-4mm wide ribs between the heat shrink films 1, which is convenient for continuous conveying in the flow operation. After passing the supporting wheel 11, the heat shrink film 1 flows to the guide cylinder 13. Each roll of heat shrink film 1 is manually loaded into the guide cylinder 13 at the beginning, and the heat shrink film 1 behind is automatically and continuously followed by the ribs without manual intervention until it is used up.

[0045] Among them, the circumference of the meter wheel 3 is set to the length required for the heat shrink film 1 in the natural state before heat shrinkage, so that each rotation of the meter wheel 3 is the length of a single section of the heat shrink film 1, and the photoelectric switch 16 senses once through the sensing hole 4 each time it rotates one circle. The sensing signal controls the cylinder to drive the blade 9 to move down and cut the heat shrink film 1, thereby realizing the fixed-length cutting function.

[0046] The function of the film pressing sensor 5 is to detect whether there is a heat shrink film 1. When the traction roller conveys the heat shrink film 1, the heat shrink film 1 is in a tight state, which generates a downward positive pressure to press the sensing rod downward. The film pressing sensor 5 senses the positive pressure and outputs a signal to the control system. On the contrary, once the heat shrink film is used up, the positive pressure disappears immediately. The film pressing sensor 5 can no longer sense the positive pressure and outputs an alarm signal to the control system, which controls the alarm to sound an alarm.

[0047] (2) Utensil push

[0048] The vessels 20 are continuously fed under the drive of the conveyor belt 21. When the first vessel 20 moves to the vicinity of the photoelectric sensor 23, a sensing signal is generated, and the control system stops the transmission of the conveyor belt 21, and the vessel 20 also stops. At this time, the control system commands the push cylinder 22 to move forward, and the V-shaped push plate pushes the vessel 20 into the inner hole of the positioning cylinder 14. Since the positioning cylinder 14 has openings in the radial and axial directions, and the radial opening is to the center of the circle, the vessel 20 can enter the positioning cylinder 14; the upper end height of the axial opening exceeds the preset height of the multi-layer vessel 20, and the lower end opening allows the activity space of the clamping device 26, so the multi-layer vessel 20 will be neatly pressed against the inner hole wall, and then the control system commands the push cylinder 22 to return to its original position and wait.

[0049] (3) Mantle

[0050] In the film sleeve section, the heat shrink film 1 is first manually loaded into the circular guide cylinder 13 and becomes a round sleeve shape. The heat shrink film 1 is loaded into the guide cylinder 13 until it is flush with its bottom. The clamping manipulator 25 holds the guide cylinder 13 tightly and moves downward, landing on the top surface of the positioning cylinder 14, and is aligned with the center of the positioning cylinder 14 by the conical surface positioning guide. Then, the manipulator claw is slightly loosened to a semi-tight state, and continues to move vertically downward. Driven by the manipulator claw, the heat shrink film 1 slides downward along the outer surface of the positioning cylinder 14 and stops sliding down after reaching the preset position.

[0051] When the heat shrink film 1 slides down to the preset position, the control system commands the positioning cylinders 15 on both sides to extend and press the heat shrink film 1 between the positioning seat 1402 and the cylinder 1404. Then the clamping manipulator 25 releases its claws, moves to the guide cylinder 13, holds the heat shrink film 1 tightly, and moves upward together to separate from the positioning cylinder 14. At this time, because the lower part of the heat shrink film 1 is pressed against the outer surface of the positioning cylinder 14 by the positioning cylinder 15 and cannot move, the first section of the heat shrink film 1 will tear off the firecracker-shaped connecting ribs from the cutting position, and the clamping manipulator 25 continues to move up to the preset position and stays on standby.

[0052] (3) Transportation and heat shrinkage

[0053] The clamping device 26 on the intelligent arm B12, the clamping cylinder 2603 is extended to make the movable rod 2602 rotate so that it can extend into the middle of the positioning cylinder 14 from the upper and lower ends, and then the clamping cylinder 2603 is shortened, and the movable rod 2602 rotates to make the two clamping blocks 2606 clamp the vessel 20 and lift it together. After it has completely left the positioning cylinder 14, the vessel 20 is transported into the heat shrinking furnace 18 for heat shrinking molding under program control. After shrinking and shaping for a preset period of time, the clamping device 26 is released and finally returns to its original position and waits.

[0054] The heat-shrinkable container 20 rolls along with the conveyor belt 21 in the heat shrinking furnace 18, and finally comes out of the furnace to become a packaged product.

[0055] The above control methods and electrical models are both prior art and common knowledge to those skilled in the art, and are not described in detail in this application.

[0056] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. An automatic film packaging machine for culture medium production, characterized in that: include The cutting unit includes a conveying mechanism and a film cutting mechanism, and is used for cutting the heat shrink film at equal intervals; The automatic film covering unit includes a film covering mechanism and a positioning mechanism, so that the cut heat shrink film is covered on the outside of the container; The heat shrink unit includes a clamping mechanism and a heat shrinking furnace, which takes out the film-covered container and transfers it to the heat shrinking furnace, so that the heat shrinking film shrinks on the surface of the container; Among them, a feeding mechanism with a positioning function is arranged on one side of the automatic film covering unit, and the vessel is pushed into the positioning mechanism; The conveying mechanism includes a film disc rack with a heat shrink film wrapped around it, traction wheels respectively attached to the upper and lower sides of the heat shrink film, a driving motor for driving the traction wheel to rotate, and a supporting wheel for keeping the heat shrink film horizontal. The film cutting mechanism includes a base, a bracket fixed on the base, a cutting cylinder installed on the top of the bracket, and a blade fixed on the telescopic end of the bottom of the cutting cylinder. The upper surface of the base is provided with a cutting groove adapted to the blade, and the base, traction wheel and supporting wheel have the same height. The film sleeve mechanism includes a guide cylinder, a workbench and a positioning cylinder fixed on the workbench, the positioning cylinder is located directly below the guide cylinder, a mechanical clamping mechanism is arranged on one side of the guide cylinder, the positioning cylinder includes a hollow cylinder body and a positioning seat fixed on the bottom end of the cylinder body, the cylinder body and the positioning seat are both fixed on the workbench, and there is a gap between the positioning seat and the inner wall of the cylinder body, the front and rear ends of the positioning cylinder are provided with feed ports, and the feed ports are adapted to the size of the vessel, the positioning mechanism includes positioning cylinders respectively arranged on both sides of the positioning cylinder, and positioning holes adapted to the positioning cylinders are arranged on both side surfaces of the positioning cylinder.

2. The automatic film packaging machine for culture medium production according to claim 1, characterized in that: The length of the blade is smaller than the width of the heat shrinkable film, and there are connecting ribs with a width of 2-4 mm between the heat shrinkable films after cutting.

3. The automatic film packaging machine for culture medium production according to claim 1, characterized in that: The conveying mechanism includes a meter wheel attached to the upper surface of the heat shrink film, a sensing hole opened on the surface of the meter wheel, a photoelectric switch arranged on one side of the meter wheel, and a film pressing sensor installed between the meter wheel and the traction wheel. The photoelectric switch is used to control the opening and closing of the cutting cylinder. The film pressing sensor is located below the heat shrink film and is used to detect whether there is a heat shrink film passing above it.

4. The automatic film packaging machine for culture medium production according to claim 1, characterized in that: The mechanical clamping mechanism includes an intelligent arm A and a mechanical clamping hand fixed to one end of the intelligent arm A close to the guide tube. The mechanical clamping hand is clamped on the outside of the guide tube, and an elastic pad is provided on the palm of the mechanical clamping hand.

5. The automatic film packaging machine for culture medium production according to claim 1, characterized in that: The feeding mechanism includes a conveyor belt for transporting containers, a pushing cylinder and a photoelectric sensor arranged on the side of the conveyor belt away from the workbench. The pushing cylinder is used to push the containers on the conveyor belt into the positioning cylinder. The upper surface of the positioning seat is flush with the surface of the conveyor belt.

6. The automatic film packaging machine for culture medium production according to claim 1, characterized in that: The clamping mechanism includes an intelligent arm B and a pneumatic clamping device fixed at one end of the intelligent arm B. A clamping groove that penetrates the cylinder transversely is opened on the cylinder, and the clamping groove penetrates the positioning seat. The clamping device extends into the positioning cylinder through the clamping groove. After clamping, the vessel is taken out of the positioning cylinder and transferred into the heat shrinking furnace.

7. The automatic film packaging machine for culture medium production according to claim 6, characterized in that: The clamping device includes an L-shaped fixing frame, a movable rod hinged on the top of the fixing frame, a clamping cylinder fixed on the fixing frame, a limit block fixed on the top of the clamping cylinder, and a limit hole passing through the limit block. The movable rod passes through the limit hole, and the height of the limit hole is greater than the height of the movable rod. The fixing frame and the movable rod are respectively fixed with elastic clamping blocks at one end away from the hinge. When the movable rod is in a horizontal state, the distance between the two clamping blocks is the same as the height of the vessel.

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