A multi-mode automatic packaging machine based on packaging bag

Abstract

The present application relates to automatic packaging machine, especially to a kind of multi-mode sealing automatic packaging machine based on packaging bag, it includes bag feeding mechanism, bag feeding mechanism clamps and conveys vertical bag body to form bag feeding path, it further includes heat sealing mechanism, cooling mechanism, edge folding mechanism and sewing mechanism in turn arranged on bag feeding path, heat sealing mechanism selectively heat seals according to packaging bag type, pressure roller group is arranged between heat sealing mechanism and cooling mechanism, cooling mechanism includes abutting plate and baffle, abutting plate has abutting surface, baffle has blocking surface, blocking surface is equipped with air outlet, cooling space is formed between abutting surface and blocking surface, air outlet divides cooling space into precooling area and fast cooling area, cooling mechanism selectively cools according to packaging bag type, edge folding mechanism selectively edges according to packaging bag type, sewing mechanism has working position and avoiding position, heat sealing mechanism, cooling mechanism, edge folding mechanism and sewing mechanism are integrated together, meet different sealing needs.

Description

Technical Field

[0001] This invention relates to automatic packaging machines, and more particularly to a multi-mode sealing automatic packaging machine based on packaging bags. Background Technology

[0002] Chinese invention patent CN116198805A discloses an automatic sealing and sewing packaging machine that combines folding and sewing, paper bag sewing and strapping. It is suitable for occasions with a variety of materials and packaging methods. It can meet different production conditions with one machine and achieve multiple uses. On this basis, it is proposed to integrate five modes: inner bag sealing and outer bag folding and sewing, folding and sewing, inner bag sealing and outer bag sewing, sewing and sealing. However, the overall length of the machine is too long, which is not conducive to customer layout. Summary of the Invention

[0003] In view of the technical problems existing in the background art, the present invention aims to provide a multi-mode sealing automatic packaging machine based on packaging bags, which integrates the heat sealing mechanism, cooling mechanism, folding mechanism and sewing mechanism, and optimizes the structure of the cooling mechanism to reduce the overall length of the machine.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: This multi-mode sealing automatic packaging machine based on packaging bags includes a bag feeding mechanism, which clamps and conveys upright bags to form a bag feeding path. It further includes a heat sealing mechanism, a cooling mechanism, a folding mechanism, and a sewing mechanism sequentially arranged on the bag feeding path. The heat sealing mechanism selectively heat seals according to the type of packaging bag. A pressure roller assembly is provided between the heat sealing mechanism and the cooling mechanism. The cooling mechanism includes a backing plate and a baffle. The backing plate has a contact surface, and the baffle has a blocking surface. The blocking surface has an air outlet. A cooling space is formed between the contact surface and the blocking surface. The air outlet divides the cooling space into a pre-cooling area and a rapid cooling area. The cooling mechanism selectively cools according to the type of packaging bag. The folding mechanism selectively folds according to the type of packaging bag. The sewing mechanism has a working position and an avoidance position, and moves between the working position and the avoidance position according to the type of packaging bag.

[0005] In this solution, the air outlet blows air onto the contact surface. The airflow is blocked by the obstruction surface and disperses within the cooling space. The airflow speed in the fast cooling zone corresponding to the air outlet is fast, and the cooling effect is strong. The airflow speed in the pre-cooling zone is slow, and the cooling is slow. Pre-cooling avoids wrinkles caused by rapid cooling and shrinkage at the sealing point. Compared with the cooling method of cooling belt, it effectively shortens the length of the cooling mechanism.

[0006] Preferably, it has a mode one, which is an inner bag sealing and outer bag folding and sewing mode, in which the sewing mechanism is in the working position and the cooling mechanism is in the closed state.

[0007] In this solution, packaging bags such as paper bags, composite bags, and woven bags are sealed with inner bags and folded and sewn with outer bags.

[0008] Preferably, it has a second mode, which is a hem stitching mode, in which the sewing mechanism is in the working position and the heat sealing mechanism and the cooling mechanism are both in the closed state.

[0009] In this solution, packaging bags such as paper bags, composite bags, and woven bags are folded and sewn together.

[0010] Preferably, it has a third mode, which is an inner bag sealing and outer bag sewing mode. In the third mode, the sewing mechanism is in the working position, and the cooling mechanism and the folding mechanism are both in the closed state.

[0011] In this solution, the inner bag of packaging bags such as paper bags, composite bags, and woven bags is sealed and the outer bag is sewn together.

[0012] Preferably, it has a fourth mode, which is a sealing mode, in which the sewing mechanism is in an avoidance position and the folding mechanism is in a closed state.

[0013] In this solution, packaging bags such as PE or PP plastic bags and aluminum foil bags are sealed.

[0014] Preferably, it has a fifth mode, which is a sewing mode, in which the sewing mechanism is in the working position, and the heat sealing mechanism, the cooling mechanism and the folding mechanism are all in the closed state.

[0015] This solution involves sewing together packaging bags such as paper bags, composite bags, and woven bags.

[0016] Preferably, the bag feeding mechanism has a conveying direction from front to back, the baffle and the backing plate extend forward with an extension section, the pressure roller assembly is located below the extension section, the cooling mechanism also includes a fan, the fan selectively operates according to the type of packaging bag, the fan is connected to a mounting plate, the mounting plate is mounted above the backing plate and the baffle, defining the area between the backing plate and the baffle as the inner side, and the front end of the extension section unfolds outward to form an open bag inlet.

[0017] In this solution, depending on the shrinkage heat properties of different packaging bag materials, either a fan or air cooling method is selected to achieve rapid cooling of the sealing process, with the fan having a large air volume.

[0018] Preferably, the heat sealing mechanism includes a sealing strip wound around a driving pulley and a driven pulley, the sealing strip is equipped with a heating block, and a packaging bag passes between the sealing strips. The bag feeding mechanism includes a transmission chain wound around a sprocket, the transmission chain is equipped with a pressure plate and a tensioning wheel, and a set of transmission chains clamps and feeds the packaging bag.

[0019] In this solution, the heating block heats the sealing tape, and the sealing tape adheres to the sealing position of the packaging bag to complete the heat sealing, avoiding direct contact between the heating block and the sealing position which would burn the surface of the packaging bag. The transmission chain reliably clamps and feeds the bag.

[0020] Preferably, the conveying direction of the bag feeding mechanism is from front to back, the folding mechanism includes a folding plate, the folding plate is swaying left and right, the folding plate is equipped with a guide plate, the guide plate is defined as the inner side, the front end of the guide plate unfolds outward to form an open bag inlet, two sets of folding plates are arranged in the front-back direction, and the two sets of folding plates alternately fold the edges.

[0021] In this scheme, two sets of folding plates alternately fold the edges to improve folding efficiency.

[0022] Preferably, the sewing mechanism is configured to move up and down, or the sewing mechanism is configured to move left and right, or the sewing mechanism is configured to move up and down and move left and right.

[0023] In this scheme, the sewing mechanism moves up and down or left and right to avoid obstacles.

[0024] The beneficial effects of this invention are that it integrates the heat-sealing mechanism, cooling mechanism, folding mechanism, and sewing mechanism into one, providing five modes to adapt to different types of packaging bags and meet different sealing requirements. The air blowing port directs airflow onto the contact surface, where the airflow is blocked by the obstructing surface and disperses within the cooling space. The rapid cooling zone corresponding to the air blowing port has a high airflow velocity and strong cooling effect, while the pre-cooling zone has a slow airflow velocity and slow cooling. Pre-cooling prevents wrinkles caused by rapid cooling and shrinkage at the sealing point. Therefore, this invention has substantial features and progress compared to existing technologies. Attached Figure Description

[0025] The following description, in conjunction with the accompanying drawings, details the embodiments and working principles of the present invention.

[0026] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0027] Figure 2 This is a three-dimensional structural diagram of the bag feeding mechanism in this invention.

[0028] Figure 3 This is a three-dimensional structural diagram of the heat sealing mechanism and the guide plate in this invention.

[0029] Figure 4 This is a three-dimensional structural diagram of the heat sealing mechanism in this invention.

[0030] Figure 5 This is a three-dimensional structural diagram of the pressure roller assembly in this invention.

[0031] Figure 6 This is a three-dimensional structural diagram of the cooling mechanism in this invention.

[0032] Figure 7 This is a three-dimensional structural diagram of the folding mechanism in this invention.

[0033] Figure 8 This is a three-dimensional structural diagram of the folding mechanism and the sewing mechanism in this invention.

[0034] Figure 9 This is a three-dimensional structural diagram of the sewing mechanism in this invention.

[0035] In the diagram: 1. Bag feeding mechanism; 2. Heat sealing mechanism; 3. Cooling mechanism; 4. Folding mechanism; 5. Sewing mechanism; 6. Pressure roller group; 7. Backing plate; 8. Baffle; 9. Guide plate; 10. Folding plate; 11. Air blowing port; 12. Fan; 13. Mounting plate; 14. Sealing tape; 15. Driving pulley; 16. Driven pulley; 17. Heating block; 18. Transmission chain; 19. Sprocket; 20. Pressure plate; 21. Tensioning wheel; 22. Air blowing pipe; 23. Extension section; 24. Clutch; 25. Thread frame; 26. Guide plate; 27. Guide block; 28. Guide rod; 29. ​​Motor. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the implementation of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0037] In the description of this application, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0038] In the description of this application, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0039] See appendix Figures 1-9In this embodiment, a multi-mode sealing automatic packaging machine based on packaging bags is provided, including a bag feeding mechanism 1. The bag feeding mechanism 1 clamps and conveys an upright bag to form a bag feeding path. The conveying direction of the bag feeding mechanism 1 is from front to back. The bag feeding mechanism 1 includes a transmission chain 18, which is wound around a sprocket 19. The transmission chain 18 is equipped with a pressure plate 20 and a tensioning wheel 21. A set of transmission chains 18 clamps and feeds packaging bags.

[0040] The system also includes a heat-sealing mechanism 2, a cooling mechanism 3, a folding mechanism 4, and a sewing mechanism 5, which are sequentially arranged on the bag feeding path. The heat-sealing mechanism 2 selectively heat-seals according to the type of packaging bag. The heat-sealing mechanism 2 includes a sealing strip 14, which is wrapped around a driving pulley 15 and a driven pulley 16. The sealing strip 14 is equipped with a heating block 17, and the packaging bag passes between the sealing strips 14.

[0041] A pressure roller assembly 6 is provided between the heat sealing mechanism 2 and the cooling mechanism 3. The cooling mechanism 3 includes a backing plate 7 and a baffle plate 8. The backing plate 7 has a contact surface, and the baffle plate 8 has a blocking surface. The blocking surface is provided with an air blowing port 11. A cooling space is formed between the contact surface and the blocking surface. The air blowing port 11 divides the cooling space into a pre-cooling area and a rapid cooling area. The cooling mechanism 3 selectively cools according to the type of packaging bag. The baffle plate 8 and the backing plate 7 extend forward with an extension section 23. The pressure roller assembly 6 is located below the extension section 23. The cooling mechanism 3 also includes a fan 12. The fan 12 selectively operates according to the type of packaging bag. The fan 12 is connected to a mounting plate 13. The mounting plate 13 is erected above the backing plate 7 and the baffle plate 8, defining the area between the backing plate 7 and the baffle plate 8 as the inner side. The front end of the extension section 23 extends outward to form an open bag inlet.

[0042] The folding mechanism 4 includes a folding plate 10, which is swaying left and right. The folding plate 10 is equipped with a guide plate 9, which defines the inner side of the guide plate 9. The front end of the guide plate 9 unfolds outward to form an open bag inlet. Two sets of folding plates 10 are arranged in the front-back direction and the two sets of folding plates 10 alternately fold the edges. The folding mechanism 4 selectively folds the edges according to the type of packaging bag.

[0043] The sewing mechanism 5 is configured to move up and down, or to move left and right, or to move up and down and move left and right. The sewing mechanism 5 has a working position and an avoidance position. The sewing mechanism 5 moves between the working position and the avoidance position according to the type of packaging bag.

[0044] It has a mode one, which is an inner bag sealing and outer bag folding and sewing mode. In mode one, the sewing mechanism 5 is in the working position and the cooling mechanism 3 is in the closed state.

[0045] It has a second mode, which is a folded hem sewing mode. In the second mode, the sewing mechanism 5 is in the working position, and the heat sealing mechanism 2 and the cooling mechanism 3 are both in the closed state.

[0046] It has a third mode, which is an inner bag sealing and outer bag sewing mode. In the third mode, the sewing mechanism 5 is in the working position, and the cooling mechanism 3 and the folding mechanism 4 are both in the closed state.

[0047] It has a fourth mode, which is a sealing mode. In the fourth mode, the sewing mechanism 5 is in an avoidance position and the folding mechanism 4 is in a closed state.

[0048] It has a fifth mode, which is a sewing mode. In the fifth mode, the sewing mechanism 5 is in the working position, and the heat sealing mechanism 2, the cooling mechanism 3 and the folding mechanism 4 are all in the closed state.

[0049] In this embodiment, the heat sealing mechanism 2, cooling mechanism 3, folding mechanism 4 and sewing mechanism 5 are located above the bag feeding mechanism 1. An inlet mechanism is also provided before the heat sealing mechanism 2. The inlet mechanism includes an inlet plate 26. The packaging bag extends between the transmission chains 18. A set of transmission chains 18 clamps and conveys the bag body backward. A set of inlet plates 26 guides the sealing position of the packaging bag and passes through the heat sealing mechanism 2, cooling mechanism 3, folding mechanism 4 and sewing mechanism 5 in sequence.

[0050] At the heat sealing mechanism 2, the sealing tape 14, heated by the heating block 17, continuously heats the inner bag opening of the packaging bag or composite bag to complete the sealing.

[0051] At the cooling mechanism 3, airflow is blown through the air outlet 11 by the air blowing pipe 22. The airflow hits the contact surface and is blocked by the obstruction surface and disperses in the cooling space. The airflow speed in the fast cooling area corresponding to the air outlet 11 is fast and the cooling effect is strong. The airflow speed in the pre-cooling area corresponding to the extension section 23 is slow and the cooling is slow. The pressure roller group 6 is set below the extension section 23. The sealing position of the packaging bag is first pressed by the pressure roller group 6. At the same time, the airflow escaping from the extension section 23 is pre-cooled. Then the airflow blown out by the air blowing pipe 22 presses the packaging bag onto the back plate 7. The sealing position is in contact with the contact surface. Air cooling and contact heat dissipation are carried out at the same time.

[0052] At the folding mechanism 4, the folding plate 10 is L-shaped. The packaging bag is guided between the guide plates 9. After the packaging bag is in place, the folding plate 10 swings to fold the opening of the packaging bag along the upper edge of the guide plate 9 and press it to the outside of the guide plate 9 to complete the folding.

[0053] At point 5 of the sewing mechanism, the bag opening is conveyed to the U-shaped opening. During the bag conveying process, the needle makes a circular rotational movement to pierce the bag opening. The needle and hook work together precisely, and the top thread and bottom thread work together to form a double-thread chain stitch with a fixed stitch length, completing continuous sewing. After sewing is completed, the built-in pneumatic knife will cut the sewing thread.

[0054] There are four modes for paper bags, composite bags, and woven bags. In mode one, the heat sealing mechanism 2 seals the inner bag, the cooling mechanism 3 is in the closed state, the folding plate 10 swings to fold the opening of the outer bag, and the sewing mechanism 5 sews the opening of the outer bag. In mode two, the heat sealing mechanism 2 and the cooling mechanism 3 are in the closed state, the folding plate 10 swings to fold the opening of the packaging bag, and the sewing mechanism 5 sews the opening of the packaging bag. In mode three, the heat sealing mechanism 2 seals the inner bag, the cooling mechanism 3 and the folding mechanism 4 are in the closed state, and the sewing mechanism 5 sews the opening of the outer bag. In mode five, the sewing mechanism 5 sews the opening of the packaging bag, and the heat sealing mechanism 2, the cooling mechanism 3, and the folding mechanism 4 are in the closed state.

[0055] For PE or PP plastic bags and aluminum foil bags, there is a mode in which the heat sealing mechanism 2 seals the bag opening, the cooling mechanism 3 cools the sealing position to achieve a shaping effect, the folding mechanism 4 is in the closed state, and the sewing mechanism 5 is in the avoidance position.

[0056] The pressure roller surface can be patterned, making the sealing position aesthetically pleasing; the back plate 7 and baffle 8 have good thermal conductivity. When the sealing position of the packaging bag passes through the air outlet 11, the airflow will press the packaging bag onto the back plate 7, ensuring the sealing position is in contact with the backing surface and allowing for direct heat dissipation; the end of the folding plate 10 is connected to a rotating shaft, which is connected to the cylinder output shaft via a swing arm; the sewing mechanism 5 includes a clutch 24 and a thread frame 25. The motor 29 provides sewing power through the clutch 24, which precisely controls the length of the sewing thread. The sewing thread tower is mounted on the thread frame 25 to provide the sewing thread, which is a mature technology. The movement of the sewing mechanism 5 can be achieved by using a lead screw and nut, with the handwheel driving the lead screw, or by the motor driving the lead screw. Guide blocks 27 and guide rods 28 can also be used for guidance, which is also a mature technology; the fan 12 is powered on and off, and the air blowing pipe 22 is powered on and off, realizing the switching between working and off states.

[0057] In other alternative implementations, the air inlet 11 may be connected to an air blowing pipe.

[0058] The above description represents the preferred embodiments of the present invention. It should be noted that the scope of protection of the present invention is not limited thereto. For those skilled in the art, various improvements, modifications, or equivalent substitutions can be made without departing from the equivalent inventive concept disclosed in the present invention, and these modifications and substitutions are also considered to be within the scope of protection of the present invention.

Claims

1. A multi-mode sealing automatic packaging machine based on packaging bags, comprising a bag feeding mechanism (1), wherein the bag feeding mechanism (1) clamps and conveys an upright bag to form a bag feeding path, characterized in that: It also includes a heat-sealing mechanism (2), a cooling mechanism (3), a folding mechanism (4), and a sewing mechanism (5) arranged sequentially on the bag feeding path. The heat-sealing mechanism (2) selectively heat-seals according to the type of packaging bag. A pressure roller group (6) is provided between the heat-sealing mechanism (2) and the cooling mechanism (3). The cooling mechanism (3) includes a backing plate (7) and a baffle (8). The backing plate (7) has a backing surface, and the baffle (8) has a blocking surface. The blocking surface is provided with an air blowing port (11). A cooling space is formed between the backing surface and the blocking surface. The air blowing port (11) cools the bag. The cooling space is divided into a pre-cooling area and a rapid cooling area. The conveying direction of the bag feeding mechanism (1) is from front to back. The baffle (8) and the backing plate (7) extend forward with an extension section (23). The air blowing port (11) corresponds to the rapid cooling area, and the extension section (23) corresponds to the pre-cooling area. The cooling mechanism (3) selectively cools according to the type of packaging bag. The folding mechanism (4) selectively folds according to the type of packaging bag. The sewing mechanism (5) has a working position and a clearance position. The sewing mechanism (5) moves between the working position and the clearance position according to the type of packaging bag.

2. The automatic packaging machine for multi-mode sealing based on packaging bags as described in claim 1, characterized in that: It has a mode one, which is an inner bag sealing and outer bag folding and sewing mode. In mode one, the sewing mechanism (5) is in the working position and the cooling mechanism (3) is in the closed state.

3. The automatic multi-mode sealing packaging machine based on packaging bags as described in claim 1, characterized in that: It has a second mode, which is a folded edge sewing mode. In the second mode, the sewing mechanism (5) is in the working position, and the heat sealing mechanism (2) and the cooling mechanism (3) are both in the closed state.

4. The automatic multi-mode sealing packaging machine based on packaging bags as described in claim 1, characterized in that: It has a mode three, which is an inner bag sealing and outer bag sewing mode. In the mode three, the sewing mechanism (5) is in the working position, and the cooling mechanism (3) and the folding mechanism (4) are both in the closed state.

5. The automatic multi-mode sealing packaging machine based on packaging bags as described in claim 1, characterized in that: It has a fourth mode, which is a sealing mode. In the fourth mode, the sewing mechanism (5) is in an avoidance position and the folding mechanism (4) is in a closed state.

6. The automatic multi-mode sealing packaging machine based on packaging bags as described in claim 1, characterized in that: It has a mode five, which is a sewing mode. In mode five, the sewing mechanism (5) is in the working position, and the heat sealing mechanism (2), the cooling mechanism (3) and the folding mechanism (4) are all in the closed state.

7. The automatic multi-mode sealing packaging machine based on packaging bags as described in claim 1, characterized in that: The pressure roller assembly (6) is located below the extension section (23). The cooling mechanism (3) also includes a fan (12). The fan (12) operates selectively according to the type of packaging bag. The fan (12) is connected to the mounting plate (13). The mounting plate (13) is mounted above the back plate (7) and the baffle (8), defining the area between the back plate (7) and the baffle (8) as the inner side. The front end of the extension section (23) extends outward to form an open bag inlet.

8. The automatic multi-mode sealing packaging machine based on packaging bags as described in claim 1, characterized in that: The heat sealing mechanism (2) includes a sealing strip (14) which is wound around a drive pulley (15) and a driven pulley (16). The sealing strip (14) is equipped with a heating block (17). The sealing strip (14) allows packaging bags to pass between it. The bag feeding mechanism (1) includes a transmission chain (18) which is wound around a sprocket (19). The transmission chain (18) is equipped with a pressure plate (20) and a tensioning wheel (21). A set of transmission chains (18) clamps and feeds packaging bags.

9. The automatic multi-mode sealing packaging machine based on packaging bags as described in claim 1, characterized in that: The folding mechanism (4) includes a folding plate (10), which is swaying left and right. The folding plate (10) is equipped with a guide plate (9), which defines the inner side between the guide plates (9). The front end of the guide plate (9) unfolds outward to form an open bag inlet. Two sets of folding plates (10) are arranged in the front-back direction, and the two sets of folding plates (10) fold the edges alternately.

10. The automatic multi-mode sealing packaging machine based on packaging bags as described in claim 1, characterized in that: The sewing mechanism (5) is set to rise and fall, or the sewing mechanism (5) is set to move left and right, or the sewing mechanism (5) is set to rise and fall and move left and right.

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