A winding device for a packaging bag laminating machine

Abstract

This utility model relates to the technical field of packaging bag production equipment, and in particular to a winding device for a packaging bag laminating machine. It includes a frame and a winding roller detachably connected to the frame. Two sets of bearing seats are symmetrically arranged horizontally on the top of the frame. A telescopic mechanism is installed within each bearing seat. One end of the telescopic mechanism is connected to the winding roller, and the other end is driven by a pneumatic drive mechanism. The winding roller is coaxially arranged with the telescopic mechanism, and both ends of the winding roller are equipped with roller joints. The outer diameter of the roller joint matches the inner diameter of the telescopic mechanism, allowing it to be inserted horizontally into the telescopic mechanism. This utility model uses a pneumatic drive mechanism to extend the telescopic mechanism, achieving rapid assembly and disassembly of the winding roller and making its rotation smoother and more stable. It effectively solves the problems of inconvenient assembly and disassembly and easy wrinkling during winding that exist in traditional winding devices, thereby improving the winding efficiency and quality of the packaging bag laminating machine.

Description

Technical Field

[0001] This utility model relates to the field of packaging bag production equipment technology, and in particular to a winding device for a packaging bag laminating machine. Background Technology

[0002] Packaging bags are a common type of storage item. During the manufacturing process of packaging bags, in order to ensure that the packaging bags have a certain strength and overall aesthetics, an outer film with a printed pattern and an inner film located inside the packaging bag are laminated together. Currently, there is a type of packaging bag lamination that uses a laminating machine for automated lamination, which greatly improves lamination efficiency.

[0003] Because different sizes of packaging bags require compatible unwinding rollers during winding, the winding rollers need frequent disassembly and replacement. However, existing packaging bag laminating machines primarily use a method where the winding rollers are stably connected to the machine body by connecting the roller joints at both ends to fixed chucks and blocks on the machine body. This installation method requires tools such as wrenches and screwdrivers for disassembly and assembly, which is not only extremely inconvenient but also makes it difficult to maintain precise alignment of the shaft center during installation. This leads to shaft center misalignment and instability during the rotation of the winding roller, resulting in wrinkles in the wound film roll and affecting winding efficiency and quality. Utility Model Content

[0004] In order to address the technical deficiencies mentioned in the background art, the purpose of this utility model is to provide a winding device for a packaging bag laminating machine, which effectively solves the problems of inconvenient disassembly and assembly and unstable rotation of the winding roller in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A winding device for a packaging bag laminating machine includes a frame and a winding roller detachably connected to the frame. Two sets of bearing seats are symmetrically arranged horizontally on the top of the frame. A telescopic mechanism is provided in the bearing seats. One end of the telescopic mechanism is connected to the winding roller, and the other end is connected to a pneumatic drive mechanism. The winding roller is coaxially arranged with the telescopic mechanism, and both ends of the winding roller are provided with roller joints. The outer diameter of the roller joint is adapted to the inner diameter of the telescopic mechanism, so that it can be inserted into the telescopic mechanism horizontally.

[0007] Preferably, the telescopic mechanism includes a telescopic shaft, a flange, and a sleeve. The telescopic shaft extends horizontally, and one end of the telescopic shaft is fixedly connected to the pneumatic drive mechanism through the flange. The sleeve has a hollow tubular structure, and an end cap is provided at one end of the sleeve near the telescopic shaft. The end cap has a connection hole in the center that is adapted to the telescopic shaft.

[0008] Preferably, a thrust bearing is provided between the telescopic shaft and the end cover of the sleeve, the inner ring of the thrust bearing is fixedly connected to the outer circumferential surface of the telescopic shaft, and the outer ring of the thrust bearing is in contact with the inner sidewall of the end cover.

[0009] Preferably, the inner wall of the sleeve is provided with an annular groove near the port of the roller joint, and an elastic sealing ring is embedded in the annular groove.

[0010] Preferably, the shape of the sleeve is adapted to the shape of the roller joint, and the roller joint is a rectangular or circular structure.

[0011] Preferably, the pneumatic drive mechanism includes a pneumatic spindle and an air supply component. The pneumatic spindle is fixedly connected to one side of the bearing seat, and the output end of the pneumatic spindle is drivenly connected to the telescopic shaft. The pneumatic spindle is provided with an air inlet and an air outlet, and the air inlet and the air outlet are respectively connected to the air supply component through air pipes.

[0012] Preferably, the air pipe is provided with an air source switch valve, which is connected in series between the air pipe and the air source supply component, and the air source switch valve is provided with a manual operating lever.

[0013] In summary, the beneficial effects of this utility model are as follows:

[0014] This invention utilizes a pneumatic drive mechanism to extend the telescopic mechanism, achieving a stable connection with the shaft roller joint of the take-up roller, thus quickly completing the installation. By controlling the retraction of the telescopic mechanism, the shaft roller joint of the take-up roller is separated from the telescopic mechanism, allowing for disassembly of the take-up roller. Compared to traditional chuck mounting structures, this method effectively solves the problems of inconvenient disassembly and uneven rotation, and allows for quick disassembly and assembly of the take-up roller without tools when changing to different sizes of rollers. Simultaneously, this connection method keeps the take-up roller and bearing seat coaxial, resulting in smoother and more stable rotation, effectively preventing wrinkles after the plastic packaging bag is wound, thereby improving the winding efficiency and quality of the packaging bag laminating machine. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall assembly structure of the winding device of the packaging bag laminating machine of this utility model;

[0016] Figure 2 This is a top view of the winding device of the packaging bag laminating machine of this utility model;

[0017] Figure 3 yes Figure 2 A cross-sectional view of the AA plane;

[0018] Figure 4 yes Figure 3 Enlarged view of the structure at point a;

[0019] Figure 5 This is an exploded view of the telescopic mechanism and the pneumatic drive mechanism in this utility model;

[0020] Figure 6 yes Figure 5 Enlarged view of the structure at point b.

[0021] Explanation of the reference numerals in the figure:

[0022] 1. Frame; 2. Take-up roller; 21. Shaft roller joint; 211. Connecting section; 212. Insertion section; 213. Guide slope; 3. Bearing seat; 31. Ball bearing; 4. Telescopic mechanism; 41. Telescopic shaft; 42. Flange; 43. Sleeve; 431. Connecting hole; 432. Annular groove; 44. Thrust bearing; 5. Pneumatic drive mechanism; 51. Pneumatic spindle; 511. Air inlet; 512. Exhaust port; 52. Air supply component; 53. Air pipe; 6. Elastic sealing ring; 7. Air supply switch valve; 71. Manual operating lever. Detailed Implementation

[0023] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0024] Those skilled in the art should understand that, in the disclosure of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, the above terms should not be construed as limitations on this utility model.

[0025] In the description of this utility model, the use of terms such as "several" means one or more, with "multiple" meaning two or more. Terms like "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of terms like "first," "second," and "third" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, the quantity of indicated technical features, or the sequential relationship between indicated technical features.

[0026] The following is in conjunction with the appendix Figure 1-6The present invention will provide a more detailed description of an embodiment of a winding device for a packaging bag laminating machine.

[0027] A winding device for a packaging bag laminating machine, such as Figure 1 , 2 As shown, the device includes a frame 1 and a take-up roller 2 detachably connected to the frame 1. Two sets of bearing seats 3 are symmetrically arranged on the top of the frame 1 in the horizontal direction. A telescopic mechanism 4 is provided in the bearing seat 3. One end of the telescopic mechanism 4 is connected to the take-up roller 2, and the other end is connected to a pneumatic drive mechanism 5. The take-up roller 2 and the telescopic mechanism 4 are coaxially arranged, and both ends of the take-up roller 2 are provided with roller joints 21. The outer diameter of the roller joint 21 is adapted to the inner diameter of the telescopic mechanism 4, so that it can be inserted into the telescopic mechanism 4 in the horizontal direction.

[0028] Specifically, a ball bearing 31 is installed inside the bearing mounting base 3. The telescopic mechanism 4 passes laterally through the ball bearing 31 and connects to the take-up roller 2. A pneumatic drive mechanism 5 is connected to one end of the telescopic mechanism 4. By using the pneumatic drive mechanism 5 to drive the telescopic mechanism 4 to extend, a stable connection can be achieved with the shaft roller joint 21 of the take-up roller 2, thereby quickly completing the installation. By controlling the telescopic mechanism 4 to retract, the shaft roller joint 21 of the take-up roller 2 can be separated from the telescopic mechanism 4, thus completing the disassembly of the take-up roller 2. Compared with the traditional chuck installation structure, this method can not only effectively solve the problems of inconvenient disassembly and assembly and unstable rotation, but also enable the take-up roller 2 to be quickly disassembled and assembled without the aid of tools when changing to different sizes of roller bodies. At the same time, this connection method makes the rotation of the take-up roller 2 more stable and smooth, effectively avoiding the problem of wrinkles after the plastic packaging bag is rolled up, thereby improving the winding efficiency and quality of the packaging bag laminating machine.

[0029] In this embodiment, as Figure 3 , 4 As shown, the telescopic mechanism 4 includes a telescopic shaft 41, a flange 42, and a sleeve 43. The telescopic shaft 41 extends horizontally and can reciprocate along its axis under the action of the pneumatic drive mechanism 5. One end of the telescopic shaft 41 is fixedly connected to the pneumatic drive mechanism 5 via the flange 42. The flange 42 serves to connect and transmit power, enabling the power generated by the pneumatic drive mechanism 5 to be effectively transmitted to the telescopic shaft 41. The sleeve 43 has a hollow tubular structure, and its internal space is used to accommodate the shaft roller joint 21 of the take-up roller 2, realizing the insertion and mating of the two. An end cap is provided at one end of the sleeve 43 near the telescopic shaft 41. A connecting hole 431 adapted to the telescopic shaft 41 is opened in the center of the end cap. Through this connecting hole 431, the telescopic shaft 41 and the sleeve 43 are connected together. When the telescopic shaft 41 moves, it can drive the sleeve 43 to move synchronously.

[0030] Specifically, when the pneumatic drive mechanism 5 operates, it pushes the telescopic shaft 41 to extend or retract horizontally. Since the telescopic shaft 41 is connected to the end cap of the sleeve 43 via the flange 42, the movement of the telescopic shaft 41 will cause the sleeve 43 to move together. When installing the take-up roller 2, the pneumatic drive mechanism 5 pushes the telescopic shaft 41 to extend, thereby causing the sleeve 43 to move towards the take-up roller 2, so that the sleeve 43 can be fitted onto the shaft roller joint 21 of the take-up roller 2. When disassembling the take-up roller 2, the pneumatic drive mechanism 5 controls the telescopic shaft 41 to retract, and the sleeve 43 also moves away from the take-up roller 2, thereby achieving separation from the shaft roller joint 21.

[0031] In this embodiment, as Figure 4 As shown, a thrust bearing 44 is provided between the telescopic shaft 41 and the end cap of the sleeve 43. The inner ring of the thrust bearing 44 is fixedly connected to the outer circumferential surface of the telescopic shaft 41, and the outer ring is in contact with the inner side wall of the end cap.

[0032] Specifically, the thrust bearing 44 is a bearing specifically designed to bear axial loads, forming a rotatable connection between the telescopic shaft 41 and the sleeve 43. When the take-up roller 2 rotates for winding, it drives the shaft roller joint 21 to rotate, which in turn drives the sleeve 43 to rotate. Since the inner ring of the thrust bearing 44 is fixed to the telescopic shaft 41, and the outer ring is fitted to the end cap of the sleeve 43, the sleeve 43 can rotate freely relative to the telescopic shaft 41. The thrust bearing 44 bears the axial load generated during the rotation of the sleeve 43, ensuring smooth rotation. The thrust bearing 44 solves the rotational fit problem between the telescopic shaft 41 and the sleeve 43. It ensures that the sleeve 43 does not interfere with the axial position of the telescopic shaft 41 when rotating with the take-up roller 2, while simultaneously bearing the axial load, guaranteeing the smooth rotation of the take-up roller 2, avoiding winding wrinkles caused by poor rotation, and improving winding quality.

[0033] In this embodiment, as Figure 5 , 6 As shown, an annular groove 432 is provided on the inner wall of the sleeve 43 near the port of the shaft roller joint 21, and an elastic sealing ring 6 is embedded in the annular groove 432.

[0034] Specifically, the elastic sealing ring 6 is made of elastic materials such as rubber, which has good sealing performance and elasticity. When the shaft roller joint 21 is inserted into the sleeve 43, the elastic sealing ring 6 can make close contact with the outer circumferential surface of the shaft roller joint 21, reducing the gap between the two and avoiding vibration and other problems caused by loose connection during the winding process, thereby enhancing the connection sealing and stability.

[0035] In this embodiment, as Figure 4As shown, the shape of the sleeve 43 is adapted to the shape of the shaft roller joint 21, which is a rectangular or circular structure.

[0036] Specifically, in this embodiment, the roller joint 21 preferably adopts a circular structure. The circular roller joint 21 includes a connecting section 211 and an insertion section 212. The connecting section 211 is fixedly connected to the end of the take-up roller 2, and the diameter of the connecting section 211 is smaller than the outer diameter of the take-up roller 2. The insertion section 212 has an inwardly inclined guide slope 213 at the end away from the connecting section 211. The guide slope 213 is circumferentially arranged along the edge of the sleeve 43 port, and the inclination angle of the guide slope 213 is 30°-60°. The specific installation process is as follows: when installing the take-up roller 2, align the insertion section 212 of the roller joint 21 with the port of the sleeve 43. Since the end of the insertion section 212 is provided with the guide slope 213, during the process of the sleeve 43 moving towards the roller joint 21, the guide slope 213 can guide the insertion section 212 to smoothly enter the sleeve 43, realizing the insertion and engagement of the two. The connection between the connecting section 211 and the take-up roller 2 ensures the power transmission between the shaft roller joint 21 and the take-up roller 2. The guide slope 213 of the insertion section 212 greatly facilitates the insertion process between the shaft roller joint 21 and the sleeve 43. Even if there is a certain deviation in the alignment between the two during installation, the guide slope 213 can still play a guiding role, making the insertion smoother and improving the installation efficiency of the take-up roller 2.

[0037] In this embodiment, as Figure 5 As shown, the pneumatic drive mechanism 5 includes a pneumatic spindle 51 and an air supply component 52. The pneumatic spindle 51 is fixedly connected to one side of the bearing seat 3, and the output end of the pneumatic spindle 51 is connected to the telescopic shaft 41 for transmission. The pneumatic spindle 51 is provided with an air inlet 511 and an exhaust port 512. The air inlet 511 and the exhaust port 512 are respectively connected to the air supply component 52 through air pipes 53.

[0038] Specifically, the outer circumferential surface of the pneumatic spindle 51 is fixedly connected to the mounting plane on one side of the bearing housing 3 by bolts. The mounting plane is perpendicular to the axis of the bearing housing 3, ensuring that the pneumatic spindle 51 and the telescopic shaft 41 are coaxially aligned. The output end of the pneumatic spindle 51 is equipped with a bushing connection structure, which enables the transmission connection between the pneumatic spindle 51 and the telescopic shaft 41, ensuring that no relative slippage occurs during power transmission. Simultaneously, the cylinder surface of the pneumatic spindle 51 has two interfaces: an air inlet 511 and an exhaust port 512. These two interfaces are symmetrically distributed radially along the cylinder body and both have standard threaded interfaces for connecting the air pipe 53. The air inlet 511 is located on the side of the pneumatic spindle 51 closer to the telescopic shaft 41, and the exhaust port 512 is located on the side farther from the telescopic shaft 41. The two are independent of each other through an internal air passage within the cylinder body. The pneumatic spindle 51 contains a piston assembly, which is rigidly connected to the output shaft. A wear-resistant sealing ring is provided on the outer circumference of the piston, tightly fitting against the inner wall of the cylinder to form a sealed chamber. When compressed air is introduced into the inlet 511, the air pressure pushes the piston axially, thereby extending the output shaft. When the exhaust port 512 is connected to an air source or the inlet 511 is used for exhaust, the piston moves in the opposite direction, causing the output shaft to retract. The air supply component 52 includes an air source processing unit, a main air pipe, branch air pipes, and a control valve assembly. The air source processing unit consists of a filter, a pressure reducing valve, and an oil mist lubricator connected in series. Its input end is connected to an external compressed air source via the main air pipe, and its output end is connected to the inlet 511 and exhaust port 512 of the pneumatic spindle 51 via branch air pipes.

[0039] It is worth noting that the structure and principle of the pneumatic spindle 51 and the air supply component 52 are existing known technologies, and therefore will not be described in detail in this embodiment.

[0040] In this embodiment, as Figure 5 As shown, an air supply switch valve 7 is provided on the air pipe 53. The air supply switch valve 7 is connected in series between the air pipe 53 and the air supply component 52, and a manual operating lever 71 is provided on the air supply switch valve 7. The air supply switch valve 7 is a key component for controlling the flow of gas in the air pipe 53, and the manual operating lever 71 facilitates manual control by the operator.

[0041] Specifically, the operator can control the opening and closing of the air source switch valve 7 via the manual operating lever 71. When the operating lever is in the open position, the air source switch valve 7 is open, and gas can enter the air source supply component 52 through the air pipe 53. When the operating lever is in the closed position, the air source switch valve 7 is closed, the gas in the air pipe 53 is cut off, the air source supply component 52 stops working, the piston of the air source supply component 52 retracts and drives the telescopic shaft 41 and the sleeve 43 away from the take-up roller 2, so that the sleeve 43 is separated from the shaft roller joint 21, and the take-up roller 2 can be quickly removed. The whole process does not require tools, realizing convenient disassembly and assembly, while also reducing the difficulty of operation and improving the ease of use of the equipment.

[0042] It should be noted that the telescopic mechanism 4 and the pneumatic drive mechanism 5 of this utility model can be applied not only to the take-up roller 2, but also to the unwind roller. Since the unwind roller also needs to be disassembled and replaced according to the packaging bags of different specifications and sizes, the unwind roller is equally applicable and produces the same beneficial effects.

[0043] The working principle of this utility model:

[0044] When installing the take-up roller 2, firstly, insert one end of the take-up roller 2 into the sleeve 43 located at the end of the drive motor 8, and then manually lift the other end of the take-up roller 2 to keep it on the same horizontal line as the bearing seat 3; then manually operate to open the air source switch valve 7, and the air source supplies air to the pneumatic main shaft 51 through the air pipe 53; the piston of the pneumatic main shaft 51 is pushed by the air pressure, driving the telescopic shaft 41 to extend, and then causing the sleeve 43 connected to the telescopic shaft 41 through the flange 42 to move towards the take-up roller 2. Until the sleeve 43 at one end of the telescopic shaft 41 is sleeved on the outside of the shaft roller joint 21 of the take-up roller 2, the fixed installation of the take-up roller 2 is completed; when rotating and winding, the sleeve 43 is driven to rotate through the shaft roller joint 21, and the thrust bearing 44 allows the sleeve 43 to rotate freely relative to the telescopic shaft 41, avoiding the telescopic shaft 41 from being disturbed by rotation, ensuring that the take-up roller 2 rotates smoothly, so that the plastic packaging bag can be wrapped flat on the take-up roller 2 and prevent wrinkles from being generated. When it is necessary to disassemble and replace the take-up roller 2, simply reverse the above steps.

[0045] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A winding device for a packaging bag laminating machine, comprising a frame and a winding roller detachably connected to the frame, characterized in that, Two sets of bearing seats are symmetrically arranged horizontally on the top of the frame. A telescopic mechanism is installed inside the bearing seats. One end of the telescopic mechanism is connected to the take-up roller, and the other end is connected to a pneumatic drive mechanism. The take-up roller is coaxially arranged with the telescopic mechanism, and both ends of the take-up roller are provided with roller joints. The outer diameter of the roller joint is adapted to the inner diameter of the telescopic mechanism, so that it can be inserted into the telescopic mechanism horizontally.

2. The winding device of the packaging bag laminating machine according to claim 1, characterized in that, The telescopic mechanism includes a telescopic shaft, a flange, and a sleeve. The telescopic shaft extends horizontally, and one end of the telescopic shaft is fixedly connected to the pneumatic drive mechanism through the flange. The sleeve has a hollow tubular structure, and an end cap is provided at one end of the sleeve near the telescopic shaft. The end cap has a connection hole in the center that is adapted to the telescopic shaft.

3. The winding device of the packaging bag laminating machine according to claim 2, characterized in that, A thrust bearing is provided between the telescopic shaft and the end cover of the sleeve. The inner ring of the thrust bearing is fixedly connected to the outer circumferential surface of the telescopic shaft, and the outer ring of the thrust bearing is in contact with the inner sidewall of the end cover.

4. The winding device of the packaging bag laminating machine according to claim 3, characterized in that, The inner wall of the sleeve is provided with an annular groove near the port of the shaft roller joint, and an elastic sealing ring is embedded in the annular groove.

5. The winding device of the packaging bag laminating machine according to claim 4, characterized in that, The shape of the sleeve is adapted to the shape of the roller joint, which is a rectangular or circular structure.

6. The winding device of the packaging bag laminating machine according to claim 1, characterized in that, The pneumatic drive mechanism includes a pneumatic spindle and an air supply component. The pneumatic spindle is fixedly connected to one side of the bearing seat, and the output end of the pneumatic spindle is drivenly connected to the telescopic shaft. The pneumatic spindle is provided with an air inlet and an air outlet, and the air inlet and the air outlet are respectively connected to the air supply component through air pipes.

7. The winding device of the packaging bag laminating machine according to claim 6, characterized in that, The air pipe is equipped with an air source switch valve, which is connected in series between the air pipe and the air source supply component, and the air source switch valve is equipped with a manual operating lever.

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