Hot sealing floating mechanism for ton bag

Abstract

The utility model relates to heat sealing packaging technical field, especially ton bag heat sealing floating mechanism, including installation support, the side support is fixed on installation support, there is first heat sealing strip on side support, swing support and first drive assembly are hinged on installation support, there is second heat sealing strip on swing support, first drive assembly is used for driving swing support rotation, makes second heat sealing strip and first heat sealing strip length direction consistent and abuts, there is first connecting plate, floating backplate and fixed plate that are arranged in turn on side support, first connecting plate is fixed in side support one end away from installation support, first connecting plate and floating backplate show the sliding state cooperation, there is second drive assembly on first connecting plate, the floating spring is fixed between floating backplate and fixed plate, first heat sealing strip is fixed on the wall surface that is parallel, away from floating spring in fixed plate, through above technical scheme, the utility model solves the problem that ton bag heat sealing cannot guarantee completely adhering state influence ton bag heat sealing effect.

Description

Technical Field

[0001] This utility model relates to a heat-sealing mechanism for ton bags, specifically a floating heat-sealing mechanism for ton bags. Background Technology

[0002] With the increasing demand for industrial automation, semi-automatic ton bag packaging can no longer meet market needs, placing higher demands on the packaging industry. Therefore, fully automatic ton bag packaging has emerged in response to market demand.

[0003] The packaging industry generally uses several methods to seal packaging bags, including cable ties, sewing, and heat sealing. However, existing packaging equipment using heat sealing typically employs steel welding and sheet metal fabrication during manufacturing. This makes it difficult to ensure complete adhesion between the two heat sealing surfaces during installation, and also prevents the application of a constant heat sealing pre-pressure to the entire PE bag opening. Even if small bags are not completely sealed during heat sealing, it will still affect the sealing effect. However, because the opening of small bags is short, the impact on the heat sealing effect is relatively small. But ton bags have relatively long openings, so if the heat sealing surfaces are not completely adhered, it will greatly affect the heat sealing effect, thus affecting the sealing quality of ton bags. Utility Model Content

[0004] In order to solve the problems in related technologies, this utility model provides a floating mechanism for heat sealing ton bags. This device solves the problem that the two heat sealing surfaces cannot be guaranteed to be completely in contact during the heat sealing of ton bags, thus affecting the heat sealing effect of ton bags.

[0005] To solve the above problems, the following technical solutions are provided:

[0006] A ton bag heat-sealing floating mechanism includes a mounting bracket, a side bracket fixed on the mounting bracket, a first heat-sealing strip on the side bracket, a swing bracket and a first driving assembly hinged to the mounting bracket, a second heat-sealing strip on the swing bracket, and the first driving assembly for driving the swing bracket to rotate so that the second heat-sealing strip is aligned with and abuts against the length of the first heat-sealing strip. The side bracket has a first connecting plate, a floating back plate, and a fixed plate arranged in parallel in sequence. The first connecting plate is fixed to one end of the side bracket away from the mounting bracket, and the first connecting plate and the floating back plate are in a sliding fit. The first connecting plate has a second driving assembly for driving the floating back plate to move. A floating spring is fixed between the floating back plate and the fixed plate, and the first heat-sealing strip is fixed to a wall surface of the fixed plate parallel to and away from the floating spring.

[0007] Through the above technical solution, by setting the floating spring, when the first drive assembly drives the swing bracket to make the first heat sealing strip stick to the second heat sealing strip, the second drive mechanism drives the floating back plate to move toward the fixed plate. Due to the floating spring between the floating back plate and the fixed plate, the fixed plate will also be displaced due to the force. In this way, the fixed plate will push the second heat sealing strip toward the first heat sealing strip. And due to the floating spring that will produce elastic deformation, the fixed plate will be displaced at various points due to the force, which will cause the second heat sealing strip to be offset at various points, so that the second heat sealing strip can be completely attached to the first heat sealing strip, thereby ensuring the heat sealing effect of the ton bag.

[0008] Furthermore, during the process of the second drive assembly driving the floating back plate to move the fixed plate, the floating spring is compressed and stores elastic potential energy. The floating spring can reduce the rigid collision between the floating back plate and the fixed plate, thereby improving the stability and service life of the structure. Moreover, the elastic potential energy of the floating spring can automatically reset the fixed plate and the second heat seal, thereby ensuring that the structure will return to its initial state after each use, thus ensuring the normal use of the structure.

[0009] Furthermore, the second drive assembly includes a second cylinder, which is fixed to the first connecting plate. The output end of the second cylinder passes through the first connecting plate and abuts against the floating back plate, and is fixedly connected to the floating back plate.

[0010] A guide rod is provided between the first connecting plate and the floating back plate. One end of the guide rod is fixedly connected to the first connecting plate, and the other end of the guide rod is slidably connected to the floating back plate.

[0011] Through the above technical solution, the guide rod ensures that when the floating backplate is displaced under force, it moves along the length of the guide rod, thereby limiting the movement direction of the floating backplate and improving its movement accuracy, thus ensuring the normal use of the floating backplate. The guide rod also provides support for the floating backplate, thereby reducing vibration and swaying during movement and enhancing its stability.

[0012] Furthermore, there are floating covers on the side wall surface of the first connecting plate in the width direction, the floating back plate and the fixed plate are both located in the cavity between the two floating covers, one side of the second heat sealing strip is located in the cavity between the two floating covers, and the other side of the second heat sealing strip is located outside the floating cover;

[0013] The second connecting plate has swing covers on its sidewalls in the width direction. One side of the first heat-sealing strip is located in the cavity between the two swing covers, and the other side of the first heat-sealing strip is located outside the swing covers.

[0014] Through the above technical solution, by setting up the floating cover and the swing cover, the floating cover and the swing cover can protect the second heat sealing strip and the first heat sealing strip respectively, thereby preventing dust from entering and extending the service life of this structure.

[0015] Furthermore, it also includes a blow-bag assembly, which includes an air bag and an air tube. The air tube has a pulse solenoid valve. One end of the air tube is connected to the air bag, and the other end of the air tube is fixedly disposed on the floating cover corresponding to the second heat-sealing strip.

[0016] With the above technical solution, by setting up the blow-bag assembly, when the heat sealing operation is completed at the mouth of the ton bag, the swing bracket will drive the first heat sealing strip away from the mouth of the ton bag. The other side of the heat-sealed part of the ton bag mouth may still stick to the second heat sealing strip. At this time, the blow-bag assembly blows air to the mouth of the ton bag, thereby causing the ton bag to fall off the second heat sealing strip, which facilitates subsequent packaging operations.

[0017] Furthermore, a connecting seat is hinged to one end of the swing bracket away from the fixed bracket, and a second connecting plate is fixed to one end of the connecting seat away from the swing bracket. The second heat-sealing strip is fixed to the wall surface of the second connecting plate that is parallel to and away from the connecting seat.

[0018] The connecting seat is fixedly connected to the middle of the second connecting plate along its length, and the connecting seat is arranged along the length of the second connecting plate. There is a gap between the connecting seat and the swing bracket at both ends of the hinge joint of the connecting seat and the swing bracket. There are positioning holes at both ends of the connecting seat along its length. There are matching screws on the swing bracket corresponding to the positioning holes. When one end of the second connecting rod is parallel to the swing bracket, there is a gap between the screw and the positioning hole. When one end of the second connecting rod abuts against the swing bracket, the screw extends into the positioning hole.

[0019] Through the above technical solution, by setting the connecting seat and the screw, when the swing bracket and the second connecting plate rotate, if the second connecting plate drives the first heat sealing strip to rotate too much, the screw will extend into the positioning hole to restrict the rotation of the second connecting plate. Thus, the two screws limit the rotation range of the second connecting plate, thereby ensuring the integrity of the first heat sealing strip.

[0020] The mounting bracket has two swing bearing seats at one end near the swing bracket. Both swing bearing seats are fixedly connected to the mounting bracket. Each swing bearing seat contains a bearing, and the outer ring of the bearing is fixedly connected to the corresponding swing bearing seat.

[0021] The end of the swing bracket closest to the mounting bracket is located between the two swing bearing seats. The section of the mounting bracket located between the two swing bearing seats is angled. A swing shaft is fixed at the angle of the mounting bracket, and the two ends of the swing shaft are fixedly connected to the inner ring of the corresponding bearing.

[0022] Through the above technical solution, the swing bearing housing and the swing shaft cooperate, and because the swing bearing housing has low friction characteristics, the swing arm can rotate flexibly on the mounting bracket, thereby ensuring the smoothness of the swing arm rotation process. In addition, the hinge design between the swing bearing housing and the swing arm has good sealing performance, which can reduce the entry of dust and impurities, thereby reducing the wear frequency of the swing bearing housing, thus reducing the maintenance frequency and maintenance costs.

[0023] Furthermore, a linear bearing is fixed on the floating back plate, and a guide shaft is fixed inside the linear bearing. One end of the guide shaft passes through the linear bearing, and the other end of the guide shaft is located between the floating back plate and the fixed plate and connected to a spherical joint. The end of the spherical joint away from the guide shaft is fixedly connected to the fixed plate. The floating spring is sleeved on the guide shaft and the spherical joint between the floating back plate and the fixed plate, and both ends of the floating spring in the length direction abut against the side wall surfaces of the floating back plate and the fixed plate, respectively.

[0024] The floating back plate has a cylindrical spring seat. The closed end of the spring seat has a through hole for the guide shaft to pass through and is fixedly connected to the end face of the floating back plate that is parallel to and close to the fixed plate. The spring seat on the outer periphery of the guide shaft has a return spring. One end of the return spring is fixed in the spring seat, and the other end of the return spring is fixedly connected to the spherical joint.

[0025] Through the above technical solution, by setting up linear bearings, the friction between the guide shaft and the floating back plate can be reduced due to the extremely low coefficient of friction of linear bearings, thereby improving mechanical efficiency;

[0026] By setting the spherical ball head, when the second drive component drives the second heat sealing strip to move toward the first heat sealing strip, the spherical ball head can allow the entire heat sealing surface of the second heat sealing strip to float within the range of 0°-3°, thereby enabling the two heat sealing surfaces of the second heat sealing strip and the first heat sealing strip to achieve adaptive bonding, thus ensuring the complete bonding between the moving second heat sealing strip and the first heat sealing strip, thereby ensuring the heat sealing effect of the ton bag;

[0027] By setting a return spring, when the second heat seal is adaptively bonded using a spherical joint, the return spring will adjust the floating angle of the spherical joint according to the corresponding heat seal surface, and can provide energy for the reset of the second heat seal, thereby ensuring the heat sealing effect and reducing costs.

[0028] Furthermore, the first drive assembly includes a first cylinder, one end of which is hinged to the mounting bracket, and the other end of which is hinged to the end of the swing bracket away from the first heat-sealing strip.

[0029] The above technical solution, through the setting of the first cylinder hinged to the mounting bracket, allows the first cylinder to swing freely within a certain range after being installed on the support bracket, thereby automatically adjusting its position to adapt to minor errors during the installation process.

[0030] Furthermore, it also includes a bag guide, one end of which is a straight section located on the side wall of the floating cover away from the mounting bracket and fixedly connected to the two floating covers. The other end of the bag guide is an arc-shaped section, and the center of the arc-shaped section is located on the side of the floating cover near the side bracket. The arc-shaped section has a notch, and one end of the notch passes through the straight section and communicates with the cavity between the two floating covers.

[0031] Through the above technical solution, by setting the bag guide component, when the ton bag enters the gap between the first heat seal strip and the second heat seal strip from the side away from the mounting bracket, the bag guide component can provide a limit for the movement of the ton bag, thereby ensuring the ton bag is in place and thus ensuring the normal progress of subsequent heat sealing.

[0032] The above solution has the following advantages:

[0033] 1. By using a floating spring, when the first drive assembly drives the swing bracket to bring the first heat-sealing strip to the second heat-sealing strip, the second drive mechanism drives the floating back plate to move towards the fixed plate. Due to the floating spring between the floating back plate and the fixed plate, the fixed plate will also be displaced due to the force, which will push the second heat-sealing strip towards the first heat-sealing strip. Furthermore, due to the elastic deformation of the floating spring, various parts of the fixed plate will be displaced due to the force, which will cause the second heat-sealing strip to shift accordingly, ensuring that the second heat-sealing strip can completely adhere to the first heat-sealing strip, thus guaranteeing the heat-sealing effect of the ton bag. In addition, during the process of the second drive assembly driving the floating back plate to push the fixed plate, the floating spring is compressed and stores elastic potential energy. The floating spring can reduce rigid collisions between the floating back plate and the fixed plate, thereby improving the stability and service life of the structure. Moreover, the elastic potential energy of the floating spring can automatically reset the fixed plate and the second heat-sealing strip, ensuring that the structure returns to its initial state after each use, thus guaranteeing normal operation.

[0034] 2. By setting the guide rod, when the floating backplate is displaced under force, it is ensured to move along the length of the guide rod, thereby limiting the movement direction of the floating backplate and improving the movement accuracy of the floating backplate, thus ensuring the normal use of the floating backplate; the guide rod can also provide support for the floating backplate, thereby reducing the vibration and swaying when the floating backplate moves, thus enhancing the stability of the floating backplate.

[0035] 3. By setting up the floating cover and the swing cover, the floating cover and the swing cover can protect the second heat seal strip and the first heat seal strip respectively, thereby preventing dust from entering and extending the service life of this structure.

[0036] 4. By setting up the bag blowing assembly, when the heat sealing operation is completed at the bag opening of the ton bag, the swing bracket will drive the first heat sealing strip away from the bag opening. The other side of the heat-sealed part of the bag opening may still be stuck to the second heat sealing strip. At this time, the bag blowing assembly blows air to the bag opening of the ton bag, thereby causing the ton bag to fall off the second heat sealing strip, which facilitates subsequent packaging operations.

[0037] 5. By setting the connecting seat and screw, when the swing bracket and the second connecting plate rotate, if the second connecting plate drives the first heat sealing strip to rotate too much, the screw will extend into the positioning hole to restrict the rotation of the second connecting plate. In this way, the two screws limit the rotation range of the second connecting plate, thereby ensuring the integrity of the first heat sealing strip.

[0038] 6. Through the cooperation of the swing bearing housing and the swing shaft, the swing bearing housing has the characteristic of low friction, which enables the swing arm to rotate flexibly on the mounting bracket, thereby ensuring the smoothness of the swing arm rotation process; in addition, the hinge design between the swing bearing housing and the swing arm has good sealing performance, which can reduce the entry of dust and impurities, thereby reducing the wear frequency of the swing bearing housing, thus reducing the maintenance frequency and maintenance costs.

[0039] 7. By using linear bearings, the extremely low coefficient of friction reduces friction between the guide shaft and the floating back plate, thereby improving mechanical efficiency. The spherical ball head allows the entire heat-sealing surface of the second heat-sealing strip to float within a 0°-3° range when the second drive assembly moves the second heat-sealing strip towards the first heat-sealing strip. This enables the two heat-sealing surfaces of the second and first heat-sealing strips to self-adaptively fit, ensuring complete adhesion and guaranteeing the heat-sealing effect of the ton bag. The return spring adjusts the floating angle of the spherical joint according to the corresponding heat-sealing surface when the spherical joint is used for self-adaptive fitting of the second heat-sealing strip, and provides energy for the return of the second heat-sealing strip, thus ensuring heat-sealing effect and reducing costs.

[0040] 8. The first cylinder, which is hinged to the mounting bracket, allows the first cylinder to swing freely within a certain range after it is mounted on the support bracket, thereby automatically adjusting its position to accommodate minor errors during the installation process.

[0041] 9. By setting the bag guide, when the ton bag enters the gap between the first heat seal and the second heat seal from the side away from the mounting bracket of the first heat seal, the bag guide can provide a limit for the movement of the ton bag, thereby ensuring the ton bag is in place and ensuring the normal progress of subsequent heat sealing. Attached Figure Description

[0042] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein:

[0043] Figure 1 This is a schematic diagram of a ton bag heat-sealing floating mechanism in a heat-sealed state, viewed from one angle.

[0044] Figure 2 This is a schematic diagram of a ton bag heat-sealing floating mechanism in a heat-sealed state, viewed from a second perspective.

[0045] Figure 3 A schematic diagram of a ton bag heat-sealing floating mechanism in a heat-sealed state, viewed from three angles.

[0046] Figure 4 A schematic diagram of a ton bag heat-sealing floating mechanism in a heat-sealed state, viewed from angle four.

[0047] Figure 5 for Figure 2 A magnified view of part number A in the middle;

[0048] Figure 6 for Figure 4 A magnified view of part number B in the middle;

[0049] Figure 7 This is a schematic diagram showing the connection between the floating back plate and the fixed plate in a ton bag heat-sealing floating mechanism.

[0050] Figure 8 This is a schematic diagram of the floating spring and the return spring in a heat-sealing floating mechanism for ton bags.

[0051] Figure 9 This is a cross-sectional view of the floating spring and the return spring in a ton bag heat-sealing floating mechanism;

[0052] Explanation of reference numerals in the attached drawings: 1. Mounting bracket; 2. Side bracket; 3. First heat-sealing strip; 4. Swing bracket; 5. First drive assembly; 6. Second heat-sealing strip; 7. First connecting plate; 8. Floating back plate; 9. Fixing plate; 10. Second drive assembly; 11. Floating spring; 12. Guide rod; 13. Connecting seat; 14. Second connecting plate; 15. Floating cover; 16. Swing cover; 17. Air bag; 18. Air pipe; 19. Pulse solenoid valve; 20. Swing bearing seat; 21. Bearing; 22. Swing shaft; 23. Positioning hole; 24. Screw; 25. Linear bearing; 26. Guide shaft; 27. Spherical joint; 28. Spring seat; 29. ​​Return spring; 30. Bag guide; 31. Notch; 32. Air blowing component. Detailed Implementation

[0053] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0054] In a specific embodiment, such as Figure 1-9 As shown, a ton bag heat-sealing floating mechanism includes a mounting bracket 1, a side bracket 2 fixed on the mounting bracket 1, a first heat-sealing strip 3 on the side bracket 2, a swing bracket 4 and a first drive assembly 5 hinged to the mounting bracket 1, a second heat-sealing strip 6 on the swing bracket 4, and the first drive assembly 5 for driving the swing bracket 4 to rotate so that the second heat-sealing strip 6 and the first heat-sealing strip 3 are aligned in length and abut against each other. The side bracket 2 has a first connecting plate 7, a floating back plate 8 and a fixed plate 9 arranged in parallel in sequence. The length directions of the first connecting plate 7, the floating back plate 8, the fixed plate 9 and the second heat-sealing strip 6 are aligned. The first connecting plate 7 is fixed in the side bracket 2 at one end away from the mounting bracket 1. The first connecting plate 7 and the floating back plate 8 are in a sliding fit. The first connecting plate 7 has a second drive assembly 10 for driving the floating back plate 8 to move. A floating spring 11 is fixed between the floating back plate 8 and the fixed plate 9. The first heat-sealing strip 3 is fixed in the fixed plate 9 on a wall surface parallel to and away from the floating spring 11.

[0055] This heat-sealing floating mechanism also includes a heating component for heating the first heat-sealing strip 3 and the second heat-sealing strip 6 respectively. The specific structure, installation method and heating method of the heating component are all existing technologies, and will not be described in detail here. It is sufficient to select a model that can heat the first heat-sealing strip 3 and the second heat-sealing strip 6 to the point where the bag opening of the ton bag can be heat-sealed.

[0056] When the first drive assembly 5 drives the swing bracket 4 to make the first heat sealing strip 3 adhere to the second heat sealing strip 6, the second drive mechanism drives the floating back plate 8 to move toward the fixed plate 9. Due to the floating spring 11 between the floating back plate 8 and the fixed plate 9, the fixed plate 9 will also be displaced due to the force. As a result, the fixed plate 9 will push the second heat sealing strip 6 toward the first heat sealing strip 3. Due to the floating spring 11 which will produce elastic deformation, the fixed plate 9 will be displaced at various points due to the force, which will cause the second heat sealing strip 6 to be offset at various points, so that the second heat sealing strip 6 can be completely adhered to the first heat sealing strip 3, thereby ensuring the heat sealing effect of the ton bag.

[0057] Furthermore, during the process of the second drive assembly 10 driving the floating back plate 8 to push the fixed plate 9 to move, the floating spring 11 is compressed and stores elastic potential energy. The floating spring 11 can reduce the rigid collision between the floating back plate 8 and the fixed plate 9, thereby improving the stability and service life of the structure. Moreover, the elastic potential energy of the floating spring 11 can automatically reset the fixed plate 9 and the second heat seal 6, thereby ensuring that the structure will return to its initial state after each use, thus ensuring the normal use of the structure.

[0058] like Figure 2 As shown, the second drive assembly 10 includes a second cylinder. In this specific embodiment, there are two second cylinders. The two second cylinders are symmetrically arranged along the middle of the length direction of the first connecting plate 8. The second cylinder is fixed on the first connecting plate 7. The output end of the second cylinder passes through the first connecting plate 7 and abuts against the floating back plate 8, and is fixedly connected to the floating back plate 8.

[0059] A guide rod 12 is provided between the first connecting plate 7 and the floating back plate 8. One end of the guide rod 12 is fixedly connected to the first connecting plate 7, and the other end of the guide rod 12 is slidably connected to the floating back plate 8. In this specific embodiment, two guide rods 12 are provided, and the two guide rods 12 are symmetrically arranged along the middle of the length direction of the first connecting plate 8, and two second cylinders are located between the two guide rods 12. This ensures that when the floating back plate 8 is displaced by force, it moves along the length direction of the guide rod 12, thereby limiting the movement direction of the floating back plate 8 and improving the movement accuracy of the floating back plate 8, thus ensuring the normal use of the floating back plate 8. The guide rod 12 can also provide support for the floating back plate 8, thereby reducing the vibration and shaking of the floating back plate 8 when it moves, and thus enhancing the stability of the floating back plate 8.

[0060] like Figure 1 As shown, there are floating covers 15 on the side wall of the first connecting plate 7 in the width direction. The floating back plate 8 and the fixed plate 9 are both located in the cavity between the two floating covers 15. One side of the second heat sealing strip 6 is located in the cavity between the two floating covers 15, and the other side of the second heat sealing strip 6 is located outside the floating cover 15.

[0061] The second connecting plate 14 has swing covers 16 on its side wall in the width direction. One side of the first heat seal strip 3 is located in the cavity between the two swing covers 16, and the other side of the first heat seal strip 3 is located outside the swing covers 16. The floating cover 15 and the swing cover 16 can protect the second heat seal strip 6 and the first heat seal strip 3 respectively, thereby preventing dust from entering and extending the service life of the structure.

[0062] like Figure 1 and Figure 3 As shown, a ton bag heat-sealing floating mechanism also includes a bag blowing assembly, which includes an air tank 17 and an air pipe 18. The air pipe 18 has a pulse solenoid valve 19 for controlling the gas flow in and out of the air pipe. The pulse solenoid valve 19 is connected to the controller of the ton bag machine, which is a conventional technology and will not be described in detail here. It is sufficient to select a model that can control the gas flow in and out of the air pipe 18. One end of the air pipe 18 is connected to the air tank 17, and the other end of the air pipe 18 is fixedly set on the floating cover 15 below the second heat-sealing strip 6 and is connected to an air blowing component 32 for blowing air into the ton bag. The air blowing component 32 is fixed on the floating cover 15. When the heat-sealing operation of the ton bag mouth is completed, the swing bracket 4 will drive the first heat-sealing strip 3 away from the ton bag mouth. The other side of the heat-sealed part of the ton bag mouth may still stick to the second heat-sealing strip 6. At this time, the bag blowing assembly blows air into the ton bag mouth, thereby causing the ton bag to fall off the second heat-sealing strip 6, which facilitates subsequent packaging operations.

[0063] like Figure 4 and Figure 6 As shown, a connecting seat 13 is hinged to one end of the swing bracket 4 away from the fixed bracket, and a second connecting plate 14 is fixed to one end of the connecting seat 13 away from the swing bracket 4. The second heat sealing strip 6 is fixed to the wall surface of the second connecting plate 14 that is parallel to and away from the connecting seat 13.

[0064] The connecting seat 13 is fixedly connected to the middle of the second connecting plate 14 along its length, and the connecting seat 13 is arranged along the length of the second connecting plate 14. There is a gap between the connecting seat 13 and the swing bracket 4 at both ends of the hinge joint. There are positioning holes 23 at both ends of the connecting seat 13 along its length. There are matching screws 24 on the swing bracket 4 corresponding to the positioning holes 23. When one end of the second connecting rod is parallel to the swing bracket 4, there is a gap between the screw 24 and the positioning hole 23. When one end of the second connecting rod abuts against the swing bracket 4, the screw 24 extends into the positioning hole 23. When the swing bracket 4 and the second connecting plate 14 rotate, if the second connecting plate 14 drives the first heat sealing strip 3 to rotate too much, the screw 24 will extend into the positioning hole 23 to restrict the rotation of the second connecting plate 14. Thus, the two screws 24 limit the rotation range of the second connecting plate 14, thereby ensuring the integrity of the first heat sealing strip 3.

[0065] like Figure 4-5As shown, there are two swing bearing seats 20 at one end of the mounting bracket 1 near the swing bracket 4. Both swing bearing seats 20 are fixedly connected to the mounting bracket 1. Each swing bearing seat 20 has a bearing 21 fixed inside it. The outer ring of the bearing 21 is fixedly connected to the corresponding swing bearing seat 20.

[0066] The end of the swing bracket 4 closest to the mounting bracket 1 is located between two swing bearing seats 20. The section of the mounting bracket 1 between the two swing bearing seats 20 is angled, and a swing shaft 22 is fixed at the angle of the mounting bracket 1. The two ends of the swing shaft 22 are respectively fixedly connected to the inner ring of the corresponding bearing 21. Through the cooperation of the swing bearing seat 20 and the swing shaft 22, the swing bearing seat 20 has low friction characteristics, which enables the swing arm to rotate flexibly on the mounting bracket 1, thereby ensuring the smoothness of the swing arm rotation process. In addition, the hinge design between the swing bearing seat 20 and the swing arm has good sealing performance, which can reduce the entry of dust and impurities, thereby reducing the wear frequency of the swing bearing seat 20, thus reducing the maintenance frequency and maintenance costs.

[0067] like Figure 7-9 As shown, a linear bearing 25 is fixed on the floating back plate 8, and a guide shaft 26 is fixed inside the linear bearing 25. One end of the guide shaft 26 passes through the linear bearing 25, and the other end of the guide shaft 26 is located between the floating back plate 8 and the fixed plate 9 and is connected to a spherical joint 27. The end of the spherical joint 27 away from the guide shaft 26 is fixedly connected to the fixed plate 9. A floating spring 11 is sleeved on the guide shaft 26 and the spherical joint 27 between the floating back plate 8 and the fixed plate 9, and the two ends of the floating spring 11 in the length direction abut against the side wall surfaces of the floating back plate 8 and the fixed plate 9, respectively.

[0068] The floating back plate 8 has a cylindrical spring seat 28. The closed end of the spring seat 28 has a through hole for the guide shaft 26 to pass through, and is fixedly connected to the end face of the floating back plate 8 that is parallel to and close to the fixed plate 9. The spring seat 28 on the outer periphery of the guide shaft 26 has a return spring 29. One end of the return spring 29 is fixed in the spring seat 28, and the other end of the return spring 29 is fixedly connected to the spherical joint 27. The linear bearing 25 has a very low coefficient of friction, which can reduce the friction between the guide shaft 26 and the floating back plate 8, thereby improving mechanical efficiency.

[0069] In this specific embodiment, three sets of linear bearings 25 are provided. The first set includes one linear bearing 25 located in the middle of the floating back plate 8. The second and third sets are respectively located at both ends of the floating back plate 8 in the length direction. Both the second and third sets include two linear bearings 25. The two linear bearings 25 in the second set are respectively located at both ends of the floating back plate 8 in the width direction. The two linear bearings 25 in the third set are respectively located at both ends of the floating back plate 8 in the width direction.

[0070] When the second drive assembly 10 drives the second heat sealing strip 6 to move toward the first heat sealing strip 3, the spherical head allows the entire heat sealing surface of the second heat sealing strip 6 to float within the range of 0°-3°, thereby enabling the two heat sealing surfaces of the second heat sealing strip 6 and the first heat sealing strip 3 to achieve adaptive bonding, thus ensuring the complete bonding between the moving second heat sealing strip 6 and the first heat sealing strip 3, thereby ensuring the heat sealing effect of the ton bag.

[0071] When the spherical joint 27 is used to achieve adaptive bonding of the second heat seal strip 6, the return spring 29 will adjust the floating angle of the spherical joint 27 according to the corresponding heat seal surface, and can provide energy for the reset of the second heat seal strip 6, thereby ensuring the heat sealing effect and reducing costs.

[0072] like Figure 4 As shown, the first drive assembly 5 includes a first cylinder, one end of which is hinged to the mounting bracket 1, and the other end of which is hinged to the end of the swing bracket 4 away from the first heat seal strip 3. By hinged to the mounting bracket 1, the first cylinder is allowed to swing freely within a certain range after being installed on the support bracket, thereby automatically adjusting its position to adapt to minor errors during the installation process.

[0073] like Figure 4 As shown, a ton bag heat-sealing floating mechanism also includes a bag guide 30. One end of the bag guide 30 is a straight section located on the side wall of the floating cover 15 away from the mounting bracket 1, and is fixedly connected to the two floating covers 15. The other end of the bag guide 30 is an arc-shaped section, and the center of the arc-shaped section is located on the side of the floating cover 15 near the side bracket 2. There is a notch 31 on the arc-shaped section, and one end of the notch 31 passes through the straight section and communicates with the cavity between the two floating covers 15. When the ton bag enters the gap between the first heat-sealing strip 3 and the second heat-sealing strip 6 from the side away from the mounting bracket 1 of the first heat-sealing strip 3, the bag guide 30 can provide a limit for the movement of the ton bag, thereby ensuring that the ton bag is in place and thus ensuring the normal operation of subsequent heat sealing.

[0074] Operation process: Other equipment on the ton bag rack clamps the ton bag and moves it to the side of the second heat seal bar that is close to the first heat seal bar. The first cylinder is activated, driving the swing bracket to rotate toward the second heat seal bar. The rotating swing bracket will drive the second connecting plate to move the first heat seal bar until the first heat seal bar rotates to press against the second heat seal bar. At this time, the second cylinder is activated, driving the floating back plate to move toward the second heat seal bar. Due to the floating spring between the floating back plate and the fixed plate, the fixed plate and the second heat seal bar are pushed toward the first heat seal bar, thus ensuring that the first heat seal bar and the second heat seal bar are in close contact and there is no gap between them and the ton bag opening.

[0075] At this time, heat sealing is performed by the second heat sealing strip and the first heat sealing strip. After the heat sealing is completed, the first cylinder drives the swing bracket to rotate, so that the first heat sealing strip is reset. The second cylinder is closed, and the floating spring returns to its original state, which in turn drives the fixed plate and the second heat sealing strip on the fixed plate to move, thereby resetting the second heat sealing strip.

[0076] In the description of this utility model, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise specified and limited, it should be noted that the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two components, and can be direct connections or indirect connections through an intermediate medium. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0077] Obviously, the above embodiments are merely examples for clear illustration and are not intended to limit the implementation. For those skilled in the art, other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all implementation methods here, and any obvious variations or modifications derived therefrom are still within the protection scope of this utility model.

Claims

1. A floating heat-sealing mechanism for ton bags, comprising a mounting bracket, a side bracket fixed on the mounting bracket, a first heat-sealing strip on the side bracket, a swing bracket and a first driving assembly hinged to the mounting bracket, a second heat-sealing strip on the swing bracket, the first driving assembly for driving the swing bracket to rotate, such that the second heat-sealing strip and the first heat-sealing strip are aligned in the same length direction and abut against each other, characterized in that... The side support has a first connecting plate, a floating back plate, and a fixed plate arranged in parallel in sequence. The first connecting plate is fixed in the side support at one end away from the mounting bracket. The first connecting plate and the floating back plate are in a sliding fit. The first connecting plate has a second driving component for driving the floating back plate to move. A floating spring is fixed between the floating back plate and the fixed plate. The first heat sealing strip is fixed in the fixed plate on the wall surface parallel to and away from the floating spring.

2. The ton bag heat-sealing floating mechanism as described in claim 1, characterized in that, The second drive assembly includes a second cylinder, which is fixed to the first connecting plate. The output end of the second cylinder passes through the first connecting plate and abuts against the floating back plate, and is fixedly connected to the floating back plate. A guide rod is provided between the first connecting plate and the floating back plate. One end of the guide rod is fixedly connected to the first connecting plate, and the other end of the guide rod is slidably connected to the floating back plate.

3. The ton bag heat-sealing floating mechanism as described in claim 1, characterized in that, The swing bracket has a connecting seat hinged to one end away from the fixed bracket, and a second connecting plate is fixed to one end of the connecting seat away from the swing bracket. The second heat-sealing strip is fixed to the wall surface of the second connecting plate that is parallel to and away from the connecting seat.

4. The ton bag heat-sealing floating mechanism as described in claim 3, characterized in that, The first connecting plate has floating covers on its sidewalls in the width direction. The floating back plate and the fixed plate are both located in the cavity between the two floating covers. One side of the second heat sealing strip is located in the cavity between the two floating covers, and the other side of the second heat sealing strip is located outside the floating covers. The second connecting plate has swing covers on its sidewalls in the width direction. One side of the first heat-sealing strip is located in the cavity between the two swing covers, and the other side of the first heat-sealing strip is located outside the swing covers.

5. The ton bag heat-sealing floating mechanism as described in claim 4, characterized in that, It also includes a blow-bag assembly, which includes an air bag and an air tube. The air tube has a pulse solenoid valve. One end of the air tube is connected to the air bag, and the other end of the air tube is fixedly mounted on the floating cover below the second heat-sealing strip.

6. The ton bag heat-sealing floating mechanism as described in claim 1, characterized in that, The mounting bracket has two swing bearing seats at one end near the swing bracket. Both swing bearing seats are fixedly connected to the mounting bracket. Each swing bearing seat contains a bearing, and the outer ring of the bearing is fixedly connected to the corresponding swing bearing seat. The end of the swing bracket closest to the mounting bracket is located between the two swing bearing seats. The section of the mounting bracket located between the two swing bearing seats is angled. A swing shaft is fixed at the angle of the mounting bracket, and the two ends of the swing shaft are fixedly connected to the inner ring of the corresponding bearing.

7. The ton bag heat-sealing floating mechanism as described in claim 3, characterized in that, The connecting seat is fixedly connected to the middle of the second connecting plate along its length, and the connecting seat is arranged along the length of the second connecting plate. There is a gap between the connecting seat and the swing bracket at both ends of the hinge joint of the connecting seat and the swing bracket. There are positioning holes at both ends of the connecting seat along its length. There are matching screws on the swing bracket corresponding to the positioning holes. When one end of the second connecting rod is parallel to the swing bracket, there is a gap between the screw and the positioning hole. When one end of the second connecting rod abuts against the swing bracket, the screw extends into the positioning hole.

8. The ton bag heat-sealing floating mechanism as described in claim 1, characterized in that, A linear bearing is fixed on the floating back plate, and a guide shaft is fixed inside the linear bearing. One end of the guide shaft passes through the linear bearing, and the other end of the guide shaft is located between the floating back plate and the fixed plate and connected to a spherical joint. The end of the spherical joint away from the guide shaft is fixedly connected to the fixed plate. The floating spring is sleeved on the guide shaft and the spherical joint between the floating back plate and the fixed plate, and both ends of the floating spring in the length direction abut against the side wall surfaces of the floating back plate and the fixed plate, respectively. The floating back plate has a cylindrical spring seat. The closed end of the spring seat has a through hole for the guide shaft to pass through and is fixedly connected to the end face of the floating back plate that is parallel to and close to the fixed plate. The spring seat on the outer periphery of the guide shaft has a return spring. One end of the return spring is fixed in the spring seat, and the other end of the return spring is fixedly connected to the spherical joint.

9. The ton bag heat-sealing floating mechanism as described in claim 1, characterized in that, The first drive assembly includes a first cylinder, one end of which is hinged to the mounting bracket, and the other end of which is hinged to the end of the swing bracket away from the first heat-sealing strip.

10. A ton bag heat-sealing floating mechanism as described in claim 4, characterized in that, It also includes a bag guide, one end of which is a straight section located on the side wall of the floating cover away from the mounting bracket and fixedly connected to the two floating covers. The other end of the bag guide is an arc-shaped section, and the center of the arc-shaped section is located on the side of the floating cover near the side bracket. The arc-shaped section has a notch, and one end of the notch passes through the straight section and communicates with the cavity between the two floating covers.

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