Front feeding rubber roller module structure of bag making machine

Abstract

The utility model discloses a front feeding rubber roller module structure of a bag making machine. The front feeding rubber roller module structure comprises a fixing frame, a driving roller, a driven roller, a rotary pressing arm and an elastic guide column. The two ends of the driving roller are rotationally installed on the fixing frame. The rotary pressing arm is rotatably mounted on the fixing frame and is arranged at the end part of the driving roller; the two ends of the driven roller are rotatably mounted on the rotary pressing arms; the driving roller and the driven roller are arranged in parallel; the driven roller can swing towards the driving roller along with the rotary pressing arm; the elastic guide column is used for driving the rotary pressing arm to move towards the driving roller so that the driven roller can abut against the driving roller. According to the utility model, through the collaborative design of the rotary pressing arm and the elastic guide pillar, the operation stability and the maintenance convenience of equipment are obviously improved.

Description

Technical Field

[0001] This utility model relates to the field of bag making equipment technology, and in particular to a front feeding rubber roller module structure for a bag making machine. Background Technology

[0002] The front feeding roller module of existing bag-making machines, as the core component of the feeding system, mainly achieves stable clamping and precise conveying of bag-making raw materials through the coordinated action of the driving roller and the driven roller. Specifically, such as Figure 1 As shown, the drive roller is directly controlled to rotate by the drive mechanism, while the driven roller is pressed against the surface of the drive roller by elastic guide posts and a sliding mechanism, achieving synchronous rotation through friction and gear transmission. To ensure dynamic contact between the driven and drive rollers, the driven roller is usually mounted on a slider. The slider slides along the vertical guide rail of the slide block by the preload of the elastic guide posts, thereby adaptively adjusting the pressure between the two rollers. However, this structure reveals significant defects during long-term, high-frequency operation: the sliding friction interface between the slider and the slide block is prone to fatigue wear due to continuous contact and force, leading to a gradual increase in the guide rail clearance. The existence of this clearance directly disrupts the dynamic balance between the two rollers, inducing radial offset, axial wobble, and abnormal noise in the driven roller during high-speed feeding, severely affecting feeding accuracy and equipment stability. More importantly, once the wear exceeds the tolerance range, the entire module must be disassembled and the slider or slide block replaced, resulting in long maintenance cycles and high costs, significantly restricting continuous bag-making operations. Therefore, further improvements are needed. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a front feeding roller module structure for a bag making machine.

[0004] The technical solution adopted by one embodiment of this utility model to solve its technical problem is: a front feeding rubber roller module structure for a bag making machine, including: a fixed frame, a driving roller, a driven roller, a rotating pressure arm, and an elastic guide column;

[0005] The two ends of the drive roller are rotatably mounted to the fixed frame; the rotating pressure arm is rotatably mounted to the fixed frame and arranged at the end of the drive roller; the two ends of the driven roller are rotatably mounted to the rotating pressure arm; the drive roller and the driven roller are arranged in parallel; the driven roller can swing toward the drive roller with the rotating pressure arm;

[0006] The elastic guide post is used to drive the rotating pressure arm to move toward the driving roller, so that the driven roller presses against the driving roller.

[0007] Optionally, the fixing frame is detachably provided with a fixing upper plate; the upper end of the elastic guide post is detachably installed on the fixing upper plate, and the lower end is installed on the rotating pressure arm.

[0008] Optionally, bearing components are installed at the ends of the driving roller, the rotating pressure arm, and the driven roller.

[0009] Optionally, the rotating pressure arm has a plate-like structure, and the fixing frame has a plate-like structure; the rotating pressure arm is attached to the fixing frame.

[0010] Optionally, multiple sets of the driving roller and driven roller are provided; the multiple sets of driving roller and driven roller are arranged side by side along the axial direction.

[0011] Optionally, the fixing frame includes an end fixing plate and a middle fixing plate; the end fixing plates are located on both sides of the frame of the bag making machine; the middle fixing plate is mounted between two adjacent sets of driving rollers and driven rollers.

[0012] The beneficial effects of this invention are as follows: The synergistic design of the rotating pressure arm and the elastic guide post significantly improves the operational stability and maintenance convenience of the equipment. Replacing the traditional sliding slider mechanism with a rotating pressure arm transforms the linear sliding friction between the slider and the slide block into the pivoting motion of the rotating pressure arm around a fixed axis. This fundamentally eliminates the gap problem caused by guide rail wear, significantly reduces the risk of radial offset and axial sway caused by fatigue wear, and ensures that the driving roller and driven roller maintain dynamic and uniform pressing over a long period, thereby improving the accuracy of raw paper conveying and extending the equipment's lifespan. The elastic guide post acts directly on the rotating pressure arm, amplifying the pre-tightening force through the lever principle. Under the same elastic load, it can generate a higher pressing force, while simplifying the pressure adjustment mechanism and facilitating quick adjustment of the gap between the two rollers to accommodate raw paper of different thicknesses. Furthermore, the modular rotating pressure arm design eliminates the need for complete module disassembly and maintenance of the driven roller. Only the constraint of the elastic guide post needs to be released, and partial replacement or repair can be achieved by disassembling the rotating pressure arm and driven roller, greatly reducing downtime and maintenance costs.

[0013] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0014] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0015] Figure 1 This is a schematic diagram of the structure of a prior art front feeding rubber roller module;

[0016] Figure 2 This is a schematic diagram of the front feeding rubber roller module of this utility model.

[0017] Explanation of key component symbols:

[0018] 10. Fixed frame; 11. Fixed upper plate; 12. End fixed plate; 13. Middle fixed plate; 20. Driving roller; 30. Driven roller; 40. Rotating pressure arm; 50. Elastic guide post. Detailed Implementation

[0019] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0020] In the description of this utility model, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0021] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional 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, they should not be construed as limitations on this utility model.

[0022] In this utility model, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0023] Example

[0024] Reference Figure 2 The present invention proposes a front feeding roller module structure for a bag making machine, comprising: a fixed frame 10, a driving roller 20, a driven roller 30, a rotating pressure arm 40, and an elastic guide post 50.

[0025] The two ends of the drive roller 20 are rotatably mounted on the fixed frame 10; the rotating pressure arm 40 is rotatably mounted on the fixed frame 10 and arranged at the end of the drive roller 20; the two ends of the driven roller 30 are rotatably mounted on the rotating pressure arm 40; the drive roller 20 and the driven roller 30 are arranged in parallel; the driven roller 30 can swing toward the drive roller 20 with the rotating pressure arm 40.

[0026] The elastic guide post is used to drive the rotating pressure arm 40 to move toward the driving roller 20 so that the driven roller 30 presses against the driving roller 20.

[0027] In this invention, the coordinated design of the rotating pressure arm 40 and the elastic guide post 50 significantly improves the operational stability and maintenance convenience of the equipment. Replacing the traditional sliding slider mechanism with the rotating pressure arm 40 transforms the linear sliding friction between the slider and the slide block into the pivoting motion of the rotating pressure arm 40 around a fixed axis. This fundamentally eliminates the gap problem caused by guide rail wear, significantly reduces the risk of radial offset and axial sway caused by fatigue wear, and ensures that the driving roller 20 and the driven roller 30 maintain dynamic and uniform pressing for a long time, thereby improving the raw material paper conveying accuracy and equipment lifespan. The elastic guide post 50 acts directly on the rotating pressure arm 40, amplifying the pre-tightening force effect through the lever principle. Under the same elastic load, it can generate a higher pressing force, while simplifying the pressure adjustment mechanism and facilitating quick adjustment of the gap between the two rollers to adapt to raw material paper of different thicknesses. In addition, the modular design of the rotary pressure arm 40 allows the driven roller 30 to be disassembled and maintained without the need to disassemble the entire module. Only the constraint of the elastic guide post 50 needs to be released, and partial replacement or repair can be achieved by disassembling the rotary pressure arm 40 and the driven roller, which greatly shortens downtime and reduces maintenance costs.

[0028] In this embodiment, the mounting frame 10 is detachably equipped with a fixed upper plate 11; the upper end of the elastic guide post 50 is detachably mounted on the fixed upper plate 11, and the lower end is mounted on the rotating pressure arm 40. The detachable connection design between the fixed upper plate 11 and the elastic guide post 50 further optimizes the modularity of the module. By disassembling the fixed upper plate 11, the constraint of the elastic guide post 50 on the rotating pressure arm 40 can be quickly released, facilitating the direct disassembly or replacement of the rotating pressure arm 40 and the driven roller 30 assembly, avoiding the cumbersome operation of disassembling the entire frame in traditional structures. At the same time, the independent installation design of the fixed upper plate 11 allows the preload adjustment of the elastic guide post 50 to be performed independently of the main frame, simplifying the pressure calibration process and improving operational convenience. This design significantly shortens the maintenance cycle and reduces adjustment errors caused by structural interference.

[0029] In this embodiment, bearings are installed at the ends of the drive roller 20, the rotating pressure arm 40, and the driven roller 30. Adding bearings to the ends of the drive roller 20, the rotating pressure arm 40, and the driven roller 30 effectively reduces frictional resistance and wear during rotation of each component. The introduction of bearings not only improves the smoothness of roller rotation and reduces feeding fluctuations caused by uneven friction, but also extends the service life of key components by distributing the load. Furthermore, the standardized design of the bearings facilitates replacement, further reducing maintenance costs and ensuring the long-term reliability of the module.

[0030] In this embodiment, the rotating pressure arm 40 and the fixing frame 10 are both plate-shaped structures; the rotating pressure arm 40 is attached to the fixing frame 10. The plate-shaped structure of both the rotating pressure arm 40 and the fixing frame 10 significantly improves the structural compactness and rigidity of the module. The wide contact surface design of the plate-shaped rotating pressure arm 40 can evenly distribute the clamping force applied by the elastic guide post 50, avoiding deformation or fatigue fracture caused by localized stress concentration. The plate structure of the fixing frame 10 enhances the torsional resistance of the overall frame and suppresses structural instability caused by vibration during high-speed feeding. The attached layout of both further reduces the space occupied by the module, adapting to the trend of compact design in bag-making machines.

[0031] In some embodiments, multiple sets of drive rollers 20 and driven rollers 30 are provided; the multiple sets of drive rollers 20 and driven rollers 30 are arranged side by side along the axial direction. Multiple sets of drive rollers 20 and driven rollers 30 can perform synchronous operation of multiple plastic bag production lines on a single bag making machine.

[0032] Specifically, the fixing frame 10 includes end fixing plates 12 and middle fixing plates 13; the end fixing plates 12 are located on both sides of the frame of the bag making machine; the middle fixing plates 13 are mounted between two adjacent sets of driving rollers 20 and driven rollers 30. The end fixing plates 12 are fixed to the side wall of the frame to ensure the overall installation stability of the module; the middle fixing plates 13 are mounted between adjacent roller sets, providing additional support points to suppress the deflection deformation of long-span rollers, and also serving as an isolation structure to prevent mutual interference when multiple rollers are running.

[0033] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications and substitutions are included within the scope defined by the claims of this application.

Claims

1. A front feeding roller module structure for a bag making machine, characterized in that, include: Fixed frame (10), driving roller (20), driven roller (30), rotating pressure arm (40) and elastic guide post (50); The two ends of the driving roller (20) are rotatably mounted on the fixed frame (10); the rotating pressure arm (40) is rotatably mounted on the fixed frame (10) and arranged at the end of the driving roller (20); the two ends of the driven roller (30) are rotatably mounted on the rotating pressure arm (40); the driving roller (20) and the driven roller (30) are arranged in parallel; the driven roller (30) can swing toward the driving roller (20) with the rotating pressure arm (40); The elastic guide post (50) is used to drive the rotating pressure arm (40) to move toward the driving roller (20) so that the driven roller (30) presses against the driving roller (20).

2. The front feeding roller module structure of the bag making machine according to claim 1, characterized in that: The fixing frame (10) is detachably provided with a fixing upper plate (11); the upper end of the elastic guide post (50) is detachably installed on the fixing upper plate (11), and the lower end is installed on the rotating pressure arm (40).

3. The front feeding roller module structure of the bag making machine according to claim 1, characterized in that: Bearing components are installed at the ends of the driving roller (20), the rotating pressure arm (40), and the driven roller (30).

4. The front feeding roller module structure of the bag making machine according to claim 1, characterized in that: The rotating pressure arm (40) has a plate-like structure, and the fixing frame (10) has a plate-like structure; the rotating pressure arm (40) is attached to the fixing frame (10).

5. The front feeding roller module structure of the bag making machine according to claim 1, characterized in that: The active roller (20) and driven roller (30) are provided in multiple sets; the multiple sets of active roller (20) and driven roller (30) are arranged side by side along the axial direction.

6. The front feeding roller module structure of the bag making machine according to claim 5, characterized in that: The fixing frame (10) includes an end fixing plate (12) and a middle fixing plate (13); the end fixing plate (12) is located on both sides of the frame of the bag making machine; the middle fixing plate (13) is mounted between two adjacent sets of driving rollers (20) and driven rollers (30).

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