Dynamic calibration device for the circumferential position of a bottom strip pressing roller

Abstract

The utility model discloses a kind of dynamic calibration devices of bottom strip pressure roller circumferential position, it is related to bag making machine technical field.The utility model includes bag making machine main body, control cabinet, rotating rod, first pressure roller subassembly, second pressure roller subassembly, compensation adjusting bin and eccentric ring, and then by installing first pressure roller subassembly, second pressure roller subassembly, compensation adjusting bin and eccentric ring, first pressure roller subassembly and second pressure roller subassembly bolt connection and form bottom strip pressure roller, control cabinet controls bag making machine main body to start, carries out bag making processing, when bottom strip pressure roller due to wear appears circumferential position to deviate phenomenon, eccentric ring rotates inside compensation adjusting bin, dynamically compensates bottom strip pressure roller eccentric phenomenon, ensure that its entire circumferential pressure is uniform, significantly improve bag making machine sealing quality.

Description

Technical Field

[0001] This utility model belongs to the field of bag making machine technology, and in particular relates to a dynamic calibration device for the circumferential position of the bottom strip pressure roller. Background Technology

[0002] A bag-making machine is an automated device that processes rolls of plastic, paper, or composite materials into plastic bags of various specifications. Its core processes include unwinding, tension control, printing (optional), heat sealing, traction, slitting, and rewinding. Through the cooperation of heated sealing blades and pressure rollers, the film is heat-sealed laterally or longitudinally to form the bottom, mouth, or sides of the bag, and then cut to the set length. It is widely used in the packaging fields of food, pharmaceutical, daily chemical, and electronics industries. The equipment types cover a variety of special models such as back seal, three-side seal, four-side seal, zipper bags, and stand-up pouches, and is a key piece of equipment in the modern packaging industry.

[0003] When using a bag-making machine, the pressure rollers are mostly rigidly fixed or manually adjusted. After long-term operation, due to bearing wear, shaft bending, and thermal deformation, the circumferential position of the pressure rollers is prone to shift, resulting in eccentricity. This eccentricity causes uneven contact between the pressure rollers and the bottom strip, resulting in inconsistent sealing pressure distribution. Areas with excessive pressure are prone to burning through the film, producing scorched edges; areas with insufficient pressure will not adhere firmly, resulting in defects such as incomplete sealing or leakage. Such quality problems directly affect the product qualification rate and increase the scrap rate. At the same time, troubleshooting requires frequent machine shutdowns for inspection and manual adjustment, making online correction impossible. This significantly reduces the continuous production capacity and overall production efficiency of the equipment, restricting the stability and automation level of the bag-making process. Utility Model Content

[0004] The purpose of this invention is to provide a dynamic calibration device for the circumferential position of the bottom strip pressure roller. Through the cooperation of components such as the first pressure roller assembly, the second pressure roller assembly, the compensation adjustment chamber, and the eccentric ring, dynamic calibration of the circumferential position from inside the bottom strip pressure roller is achieved, solving the problem of existing bag making machines.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is a dynamic calibration device for the circumferential position of a bottom strip pressure roller, including a bag making machine body, a control console, and rotating rods. The control console is fixedly connected to the bag making machine body, and rotating rods are symmetrically rotatably connected to the bag making machine body. A first pressure roller assembly is provided above the two rotating rods, and a second pressure roller assembly is provided below the two rotating rods. The first pressure roller assembly and the second pressure roller assembly are bolted together. Compensation adjustment chambers are provided inside both the first pressure roller assembly and the second pressure roller assembly. An eccentric ring is provided between the first pressure roller assembly and the second pressure roller assembly, located inside the compensation adjustment chamber.

[0007] By adopting the above technical solution, the first pressure roller assembly and the second pressure roller assembly form the bottom strip pressure roller. The control console controls the main body of the bag making machine to start and carry out bag making. When the bottom strip pressure roller is worn and its circumferential position is offset, the eccentric ring rotates inside the compensation adjustment chamber to dynamically compensate for the eccentricity of the bottom strip pressure roller, ensuring that the pressure on its entire circumference is uniform and consistent, and significantly improving the sealing quality of the bag making machine.

[0008] Furthermore, the mass of the shaded portion of the eccentric ring is greater than the mass of the blank portion of the eccentric ring.

[0009] By adopting the above technical solution, the eccentric ring has a significant eccentric effect. By rotating the position of the shaded part of the eccentric ring, the eccentricity of the bottom strip pressure roller is dynamically compensated.

[0010] Furthermore, a micro motor is provided inside the first pressure roller assembly and the second pressure roller assembly. The micro motor is located on one side of the eccentric ring. Heat dissipation holes are equidistantly opened on one side surface of the first pressure roller assembly and the second pressure roller assembly. The control console is electrically connected to the micro motor. A rotating shaft rod that is fixedly connected to the micro motor is rotatably connected inside the first pressure roller assembly and the second pressure roller assembly. The rotating shaft rod passes through the compensation adjustment chamber. A linkage gear located inside the compensation adjustment chamber is fixedly connected to the rotating shaft rod. Transmission teeth that mesh with the linkage gear are equidistantly fixedly connected to the inner wall of the eccentric ring.

[0011] By adopting the above technical solution, the micro motors inside the first and second pressure roller assemblies are started. The output shaft of the micro motor drives the rotating shaft to rotate, and the rotating shaft drives the connecting gear to rotate. The teeth on the surface of the connecting gear contact the transmission teeth, which drives the eccentric ring to rotate and adjusts the angle of the shaded part of the eccentric ring.

[0012] Furthermore, an auxiliary mechanism for improving the accuracy of micro motor angle adjustment is fixedly installed on the rotating shaft. The auxiliary mechanism includes a micro magnetic encoder fixedly connected to one end of the rotating shaft. The micro magnetic encoder is fixedly connected to the micro motor. A micro planetary reducer fixedly connected to the rotating shaft is provided on one side of the micro magnetic encoder. Both the micro magnetic encoder and the micro planetary reducer are rotatably connected to the inside of the first pressure roller assembly and the inside of the second pressure roller assembly. Both the micro magnetic encoder and the micro planetary reducer are electrically connected to the control console.

[0013] By adopting the above technical solutions, the miniature magnetic encoder can provide real-time and accurate feedback on the rotation angle and speed of the miniature motor shaft, detect and correct "step loss" or "lag" phenomena, and the miniature planetary reducer can amplify the torque, enabling the shaft rod to drive the eccentric ring to rotate smoothly and change speed, converting the high-speed rotation of the shaft rod into low-speed output, thus effectively improving the angle resolution.

[0014] Furthermore, a miniature wireless brake is fixedly connected to the other end of the rotating shaft and is rotatably connected to the inside of the first pressure roller assembly and the inside of the second pressure roller assembly. The miniature wireless brake is electrically connected to the control console.

[0015] By adopting the above technical solution, the miniature wireless brake locks the rotating shaft after the miniature motor stops, preventing the eccentric ring from undergoing slight displacement due to vibration or external force.

[0016] Furthermore, four positioning holes are symmetrically opened on the upper surface of the second pressure roller assembly, and four positioning blocks are symmetrically fixedly connected to the lower surface of the first pressure roller assembly. The positioning blocks are slidably connected to the positioning holes.

[0017] By adopting the above technical solution, the first pressure roller assembly is brought close to the second pressure roller assembly, and the positioning block enters the positioning hole, which facilitates the positioning and assembly of the first pressure roller assembly and the second pressure roller assembly.

[0018] Furthermore, T-shaped grooves are symmetrically provided on the first pressure roller assembly and the second pressure roller assembly, and T-shaped blocks are fixedly connected to one end of the two rotating rods near the eccentric ring, and the T-shaped blocks slide through the T-shaped grooves.

[0019] By adopting the above technical solution, after the first pressure roller assembly and the second pressure roller assembly are firmly connected, when the bottom strip pressure roller composed of them rotates, the T-shaped block is controlled to rotate, which in turn drives the rotating rod to rotate.

[0020] This utility model has the following beneficial effects:

[0021] This invention involves installing a first pressure roller assembly, a second pressure roller assembly, a compensation adjustment chamber, and an eccentric ring. The first and second pressure roller assemblies are connected by bolts to form a bottom strip pressure roller. The control console starts the main body of the bag making machine to perform bag making. When the bottom strip pressure roller experiences circumferential displacement due to wear, the eccentric ring rotates inside the compensation adjustment chamber to dynamically compensate for the eccentricity of the bottom strip pressure roller, ensuring uniform pressure throughout its circumference and significantly improving the sealing quality of the bag making machine.

[0022] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0026] Figure 3 This is a schematic diagram of the structure of the first pressure roller assembly and the second pressure roller assembly at one angle of this utility model;

[0027] Figure 4 This is a schematic cross-sectional view of the eccentric ring of this utility model;

[0028] Figure 5 This is a schematic diagram of the first and second pressure roller assemblies from another angle of this utility model.

[0029] The attached diagram lists the components represented by each number as follows:

[0030] 1. Main body of bag making machine; 2. Control console; 3. Rotating rod; 4. First pressure roller assembly; 5. Second pressure roller assembly; 6. Compensation adjustment chamber; 7. Eccentric ring; 8. Micro motor; 9. Rotating shaft; 10. Connecting gear; 11. Transmission gear; 12. Micro magnetic encoder; 13. Micro planetary reducer; 14. Micro wireless brake; 15. Positioning hole; 16. Positioning block; 17. T-slot; 18. T-block. Detailed Implementation

[0031] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figure 1-5This utility model is a dynamic calibration device for the circumferential position of the bottom strip pressure roller, including a bag making machine body 1, a control console 2, and rotating rods 3. The control console 2 is fixedly connected to the bag making machine body 1, and the rotating rods 3 are symmetrically rotatably connected to the bag making machine body 1. A first pressure roller assembly 4 is provided above the two rotating rods 3, and a second pressure roller assembly 5 is provided below the two rotating rods 3. The first pressure roller assembly 4 and the second pressure roller assembly 5 are bolted together. A compensation adjustment chamber 6 is provided inside the first pressure roller assembly 4 and the second pressure roller assembly 5. An eccentric ring 7 is provided between the first pressure roller assembly 4 and the second pressure roller assembly 5, located inside the compensation adjustment chamber 6.

[0033] The mass of the shaded portion of eccentric ring 7 is greater than the mass of the unshaded portion of eccentric ring 7.

[0034] A micro motor 8 is installed inside the first pressure roller assembly 4 and the second pressure roller assembly 5. The micro motor 8 is located on one side of the eccentric ring 7. Heat dissipation holes are equidistantly opened on one side surface of the first pressure roller assembly 4 and the second pressure roller assembly 5. The control console 2 is electrically connected to the micro motor 8. A rotating shaft 9, which is fixedly connected to the micro motor 8, is rotatably connected inside the first pressure roller assembly 4 and the second pressure roller assembly 5. The rotating shaft 9 passes through the compensation adjustment chamber 6. A connecting gear 10 located inside the compensation adjustment chamber 6 is fixedly connected to the rotating shaft 9. Transmission teeth 11, which mesh with the connecting gear 10, are equidistantly fixedly connected to the inner wall of the eccentric ring 7.

[0035] An auxiliary mechanism for improving the angle adjustment accuracy of the micro motor 8 is fixedly installed on the rotating shaft 9. The auxiliary mechanism includes a micro magnetic encoder 12 fixedly connected to one end of the rotating shaft 9. The micro magnetic encoder 12 is fixedly connected to the micro motor 8. A micro planetary reducer 13 fixedly connected to the rotating shaft 9 is provided on one side of the micro magnetic encoder 12. Both the micro magnetic encoder 12 and the micro planetary reducer 13 are rotatably connected to the inside of the first pressure roller assembly 4 and the second pressure roller assembly 5. Both the micro magnetic encoder 12 and the micro planetary reducer 13 are electrically connected to the control console 2.

[0036] The other end of the rotating shaft 9 is fixedly connected to a miniature wireless brake 14 that is rotatably connected to the inside of the first pressure roller assembly 4 and the second pressure roller assembly 5. The miniature wireless brake 14 is electrically connected to the control console 2.

[0037] The upper surface of the second pressure roller assembly 5 is symmetrically provided with four positioning holes 15, and the lower surface of the first pressure roller assembly 4 is symmetrically fixedly connected with four positioning blocks 16, which slide through the positioning holes 15.

[0038] The first pressure roller assembly 4 and the second pressure roller assembly 5 are symmetrically provided with T-shaped grooves 17. The two rotating rods 3 are fixedly connected to one end of the eccentric ring 7 with a T-shaped block 18. The T-shaped block 18 slides through the T-shaped groove 17.

[0039] A specific application of this embodiment is as follows: The first pressure roller assembly 4 and the second pressure roller assembly 5 are bolted together to form a bottom strip pressure roller. The control console 2 controls the main body 1 of the bag making machine to start and perform bag making. When the bottom strip pressure roller experiences circumferential displacement due to wear, the eccentric ring 7 rotates inside the compensation adjustment chamber 6 to dynamically compensate for the eccentricity of the bottom strip pressure roller. The mass of the shaded part of the eccentric ring 7 is greater than the mass of the blank part of the eccentric ring 7, giving the eccentric ring 7 a significant eccentric effect. By rotating the position of the shaded part of the eccentric ring 7, the eccentricity of the bottom strip pressure roller is dynamically compensated, ensuring that the pressure on its entire circumference is uniform and consistent, significantly improving the sealing quality of the bag making machine. The micro motor 8 inside the first pressure roller assembly 4 and the second pressure roller assembly 5 is then started. The output shaft of the micro motor 8 drives the rotating shaft 9 to rotate, which in turn drives the connecting gear 10 to rotate. The teeth on the surface of the connecting gear 10 contact the transmission teeth 11, which in turn drives the eccentric ring 7 to rotate. The angle of the shaded part of the eccentric ring 7 is adjusted. The micro magnetic encoder 12 can provide real-time and accurate feedback on the rotation angle and speed of the micro motor 8 shaft, and can detect and correct "step loss" or "lag". The micro planetary reducer 13 can amplify the torque, enabling the rotating shaft 9 to drive the eccentric ring 7 to rotate smoothly and change speed, converting the high-speed rotation of the rotating shaft 9 into a low-speed output, which effectively improves the angle resolution. After the micro motor 8 stops, the micro wireless brake 14 locks the rotating shaft 9 to prevent the eccentric ring 7 from undergoing slight displacement due to vibration or external force.

[0040] One specific application of this embodiment is: the first pressure roller assembly 4 is brought close to the second pressure roller assembly 5, and the positioning block 16 enters the positioning hole 15, so as to facilitate the positioning and assembly of the first pressure roller assembly 4 and the second pressure roller assembly 5. After the first pressure roller assembly 4 and the second pressure roller assembly 5 are firmly connected, when the bottom strip pressure roller composed of them rotates, the T-shaped block 18 is controlled to rotate, which drives the rotating rod 3 to rotate.

[0041] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0042] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A dynamic calibration device for the circumferential position of a bottom strip pressure roller, comprising a bag-making machine body (1), a control console (2), and a rotating rod (3), wherein the control console (2) is fixedly connected to the bag-making machine body (1), and the rotating rod (3) is symmetrically rotatably connected to the bag-making machine body (1), characterized in that: A first pressure roller assembly (4) is provided above the two rotating rods (3), and a second pressure roller assembly (5) is provided below the two rotating rods (3). The first pressure roller assembly (4) and the second pressure roller assembly (5) are bolted together. Compensation adjustment chambers (6) are provided inside the first pressure roller assembly (4) and the second pressure roller assembly (5). An eccentric ring (7) is provided between the first pressure roller assembly (4) and the second pressure roller assembly (5) and is located inside the compensation adjustment chamber (6).

2. The dynamic calibration device for the circumferential position of the bottom strip pressure roller according to claim 1, characterized in that, The mass of the shaded portion of the eccentric ring (7) is greater than the mass of the blank portion of the eccentric ring (7).

3. The dynamic calibration device for the circumferential position of the bottom strip pressure roller according to claim 1, characterized in that, A micro motor (8) is provided inside the first pressure roller assembly (4) and the second pressure roller assembly (5). The micro motor (8) is located on one side of the eccentric ring (7). Heat dissipation holes are provided at equal intervals on one side surface of the first pressure roller assembly (4) and the second pressure roller assembly (5). The control console (2) is electrically connected to the micro motor (8). A rotating shaft (9) fixedly connected to the micro motor (8) is rotatably connected inside the first pressure roller assembly (4) and the second pressure roller assembly (5). The rotating shaft (9) passes through the compensation adjustment chamber (6). A connecting gear (10) located inside the compensation adjustment chamber (6) is fixedly connected to the rotating shaft (9). Transmission teeth (11) meshing with the connecting gear (10) are fixedly connected at equal intervals on the inner wall of the eccentric ring (7).

4. The dynamic calibration device for the circumferential position of the bottom strip pressure roller according to claim 3, characterized in that, An auxiliary mechanism for improving the angle adjustment accuracy of the micro motor (8) is fixedly installed on the rotating shaft (9). The auxiliary mechanism includes a micro magnetic encoder (12) fixedly connected to one end of the rotating shaft (9). The micro magnetic encoder (12) is fixedly connected to the micro motor (8). A micro planetary reducer (13) fixedly connected to the rotating shaft (9) is provided on one side of the micro magnetic encoder (12). The micro magnetic encoder (12) and the micro planetary reducer (13) are rotatably connected to the inside of the first pressure roller assembly (4) and the second pressure roller assembly (5). The micro magnetic encoder (12) and the micro planetary reducer (13) are electrically connected to the control console (2).

5. The dynamic calibration device for the circumferential position of the bottom strip pressure roller according to claim 4, characterized in that, The other end of the rotating shaft (9) is fixedly connected to a miniature wireless brake (14) that is rotatably connected to the inside of the first pressure roller assembly (4) and the inside of the second pressure roller assembly (5). The miniature wireless brake (14) is electrically connected to the console (2).

6. The dynamic calibration device for the circumferential position of the bottom strip pressure roller according to claim 5, characterized in that, The second pressure roller assembly (5) has four symmetrically arranged positioning holes (15) on its upper surface, and the first pressure roller assembly (4) has four symmetrically fixedly connected positioning blocks (16) on its lower surface. The positioning blocks (16) slide through the positioning holes (15).

7. The dynamic calibration device for the circumferential position of the bottom strip pressure roller according to claim 1, characterized in that, The first pressure roller assembly (4) and the second pressure roller assembly (5) are symmetrically provided with T-shaped grooves (17), and the two rotating rods (3) are fixedly connected to one end of the eccentric ring (7) with a T-shaped block (18), and the T-shaped block (18) slides through the T-shaped groove (17).

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