A limiting and guiding structure for edge pressing rollers of packaging bags
Patent Information
- Application Number
- CN202522135401.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-10
- Publication Date
- 2026-09-01
- Estimated Expiration
- 2035-10-10
AI Technical Summary
[0003]进行调整时频繁人工干预不仅降低效率，更因压合质量不稳定增加客户投诉
[0018]本实用新型通过双段压辊分区滚压设计，显著提升加厚与薄壁区域的压合均匀性；对称送料板结合拉簧与插杆限位机构，大幅抑制包装袋输送偏移；限位板间距自适应调节机构可精准匹配滚轴宽度，确保包装袋宽度与导向间距一致，彻底解决压偏问题；多档位限位孔与限位块配合，有效防止拉簧过度牵引导致的送料板位移；落料板倾斜设计大幅提升压后包装袋的收集效率。整体结构显著增强压边精度与生产连续性，降低废品率及人工干预频次。
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Figure CN224702668U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of guiding structure technology, specifically relating to a limiting guiding structure for a packaging bag edge pressing roller. Background Technology
[0002] In the packaging bag manufacturing industry, the edge pressing roller, as a core component of bag-making equipment, directly affects the edge pressing quality due to the performance of its guiding structure. In existing technologies, due to the thickness difference between locally thickened areas (such as the bottom reinforcing layer of stand-up pouches) and thin-walled areas on packaging bags, traditional single-segment pressure rollers struggle to adapt to the pressure distribution: insufficient pressure in thin-walled areas leads to weak pressing, while excessive compression in thickened areas causes material deformation or breakage, significantly increasing the scrap rate. Furthermore, during high-speed conveying, packaging bags are prone to lateral displacement due to tension fluctuations, and fixed-gap baffles cannot adapt to changes in bag width or gap deviations caused by roller wear, resulting in frequent edge pressing misalignment and requiring repeated machine stops for adjustment. While some improved solutions employ spring-driven feeding plates for dynamic centering, they lack a reliable displacement constraint mechanism. Prolonged stress on the tension springs can easily cause excessive displacement of the feeding plate, even leading to mechanical interference and severely disrupting production continuity.
[0003] Frequent manual intervention during adjustments not only reduces efficiency but also increases customer complaints due to unstable pressing quality. There is an urgent need for a limiting and guiding structure that integrates thickness adaptation, width self-adjustment, and displacement constraint to overcome existing technological bottlenecks.
[0004] This invention attempts to solve or at least alleviate such problems by providing a limiting and guiding structure for the edge pressing roller of a packaging bag. Utility Model Content
[0005] In view of one or more of the above-mentioned defects or improvement needs of the prior art, the present invention provides a limiting and guiding structure for the edge pressing roller of packaging bags, which has the advantage of facilitating the guidance of packaging bags.
[0006] To achieve the above objectives, this utility model provides a limiting and guiding structure for a sealing roller of a packaging bag, comprising:
[0007] The control panel, the pressing mechanism mounted on it, the left and right feeding plates symmetrically arranged in front of the pressing mechanism, and the limiting plate located on the outside of the feeding plates;
[0008] The left feeding plate and the right feeding plate are connected by at least one tension spring, and both are provided with insert rods that pass through them laterally;
[0009] Both the left and right feeding plates are inclined surfaces, and the limiting plate is an inclined plate with the same shape as the two but with a slightly larger area.
[0010] The insertion rod is fixed to the fixed plate of the operating table via a connecting plate, and the fixed plate is located between the two feeding plates.
[0011] As a further improvement of this utility model, the pressing mechanism is provided with a double-section pressure roller, the middle section of which is used to roll the thickened area of the packaging bag, and the two end sections are used to roll the thin-walled area.
[0012] As a further improvement of this utility model, a limiting ring is provided at the bottom outer side of the limiting plate, and a limiting block is inserted into the limiting ring. A limiting hole is opened on the top surface of the operating table, and the limiting block can be inserted into the limiting hole to constrain the displacement of the feeding plate.
[0013] As a further improvement of this utility model, the top side of the limiting plate is provided with a first rotating shaft, the first rotating shaft is hinged to a first rotating rod, and the end of the first rotating rod is provided with a second rotating shaft, the second rotating shaft is hinged to a second rotating rod; the end of the second rotating rod is flush with the inner side of the limiting plate, and is used to abut against the side of the roller of the pressing mechanism to adapt to the adjustment of the distance between the two limiting plates.
[0014] As a further improvement of this utility model, a material drop plate is also provided, which is inclinedly located at the end of the operating table to guide the pressed packaging bag to slide down.
[0015] As a further improvement of this utility model, the insertion rod is multiple and evenly distributed along the inclined surface of the feeding plate.
[0016] As a further improvement of this utility model, the limiting holes are arranged in multiple arrays, and the matching limiting blocks realize the multi-position fixing of the feeding plate.
[0017] In summary, the beneficial effects of the above-described technical solutions conceived by this utility model compared with the prior art include:
[0018] This invention significantly improves the uniformity of pressing in thickened and thin-walled areas through a dual-stage pressure roller design; the symmetrical feeding plate, combined with a tension spring and insert rod limiting mechanism, greatly suppresses bag conveying deviation; the adaptive adjustment mechanism for the limiting plate spacing can precisely match the roller width, ensuring that the bag width and guide spacing are consistent, completely solving the problem of pressure deviation; the multi-position limiting holes and limiting blocks effectively prevent feeding plate displacement caused by excessive tension spring traction; the inclined design of the discharge plate greatly improves the collection efficiency of pressed bags. The overall structure significantly enhances edge pressing accuracy and production continuity, reducing scrap rate and frequency of manual intervention. Attached Figure Description
[0019] Figure 1 This is a front view of a limiting and guiding structure for a sealing roller of a packaging bag according to the present invention;
[0020] Figure 2 This is a schematic diagram of the back of a limiting and guiding structure for a sealing roller of a packaging bag according to the present invention;
[0021] Figure 3This is a schematic diagram of the structure at point A of this utility model;
[0022] Figure 4 This is a schematic diagram of the structure at point B of this utility model;
[0023] Figure 5 This is a schematic diagram of the structure at point C of this utility model.
[0024] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically:
[0025] Pressing mechanism 1; Left feeding plate 2; Discharge plate 3; Operating table 4; Limiting plate 21;
[0026] Insert rod 22; fixing plate 23; connecting plate 24; tension spring 25; right side feeding plate 26;
[0027] Limiting ring 27; limiting block 28; limiting hole 29; first rotating shaft 211; first rotating rod 212;
[0028] Second rotating shaft 213; second rotating rod 214. Detailed Implementation
[0029] 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.
[0030] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The terms “comprising,” “including,” etc., as used herein indicate the presence of the stated features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.
[0031] All terms used herein (including technical and scientific terms) have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein are to be interpreted in a manner consistent with the context of this specification, and not in an idealized or overly rigid way.
[0032] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings. In this embodiment, the limiting and guiding structure includes core components such as an operating table 4, a pressing mechanism 1, a left feeding plate 2, a right feeding plate 26, a limiting plate 21, and a dropping plate 3. These components work together to solve the problems of offset and thickness adaptation during the edge pressing process of the packaging bag.
[0033] 1. Main structural layout
[0034] The operating table 4 serves as the mounting base, with a left feeding plate 2 and a right feeding plate 26 symmetrically arranged on its top front side. Both feeding plates have inclined surfaces to guide the packaging bags into the pressing station.
[0035] The pressing mechanism 1 is fixed above the rear side of the operating table 4. Its pressure roller is designed with a two-section structure: the middle section has a smaller diameter and is used to roll the thickened area of the packaging bag (such as the bottom of the stand-up pouch); the two end sections have larger diameters and are suitable for rolling the thin-walled area to achieve precise pressure in different sections.
[0036] The limiting plate 21 covers the outside of the feeding plate. It has the same shape as the feeding plate but a slightly larger area, forming a wrapping guide channel.
[0037] 2. Dynamic limit mechanism
[0038] The tension spring 25 connects the left feeding plate 2 and the right feeding plate 26 laterally, allowing the two plates to open and close elastically to accommodate different bag widths.
[0039] The insertion rod 22 extends laterally through the inclined surfaces of the two feeding plates and is fixed to the fixed plate 23 of the operating table 4 via the connecting plate 24. The fixed plate 23 is located between the two feeding plates, and multiple insertion rods 22 are evenly distributed along the inclined surfaces of the feeding plates to form a floating support frame, suppressing the offset caused by conveying vibration.
[0040] Limit constraint components:
[0041] A limiting ring 27 is welded to the outer bottom of the limiting plate 21, and a limiting block 28 is inserted into the limiting ring 27;
[0042] The top surface of the operating table 4 has multiple sets of arrayed limiting holes 29. The limiting block 28 can be inserted into different limiting holes 29 to achieve multi-position mechanical locking of the feeding plate position and prevent the tension spring 25 from being overloaded.
[0043] 3. Width adjustment mechanism
[0044] A first rotating shaft 211 is installed on the top side of the limiting plate 21, and the first rotating shaft 211 is hinged to the first rotating rod 212;
[0045] The first rotating rod 212 is provided with a second rotating shaft 213 at its end, and the second rotating shaft 213 is hinged to the second rotating rod 214;
[0046] The second rotating rod 214 can be an L-shaped structure. The end of the second rotating rod 214 is flush with the inner side of the limiting plate 21. When working, it abuts against the side of the roller of the pressing mechanism 1. At this time, the distance between the two limiting plates 21 is manually adjusted to be consistent with the width of the roller to ensure that the packaging bag passes through in the center.
[0047] 4. Material feeding and collection
[0048] The material discharge plate 3 is tilted and fixed at the end of the operating table 4. The pressed packaging bag slides down its inclined surface to achieve continuous collection.
[0049] Working principle: The first rotating shaft 211 at the top of the limiting plate 21 is hinged to the first rotating rod 212. The first rotating rod 212 drives the second rotating rod 214 through the second rotating shaft 213, so that the end of the second rotating rod 214 abuts against the side of the roller of the pressing mechanism 1, thereby adjusting the distance between the left feeding plate 2 and the right feeding plate 26. The packaging bag is first guided and conveyed to the front of the pressing mechanism 1 by the inclined left feeding plate 2 and the right feeding plate 26. The symmetrically arranged feeding plates are elastically connected by tension springs 25, so that the packaging bag is automatically centered. During the conveying process, the insertion rod 22 passes through the feeding plate laterally and is fixed to the fixed plate 23 of the operating table 4 through the connecting plate 24, forming a floating support structure to suppress lateral deviation. When the packaging bag enters the pressing mechanism 1, its two-stage pressure rollers move synchronously: the middle section precisely rolls the thickened area, and the two end sections are adapted to roll the thin-walled area, realizing pressure zone matching. The limiting plate 21 covers the outside of the feeding plate, and the limiting block 28 inside the bottom limiting ring 27 can be inserted into the limiting hole 29 of the operating table 4 to lock the position of the feeding plate and prevent the tension spring 25 from being over-pulled. At the same time, the distance between the two limiting plates 21 is automatically adjusted to be the same as the width of the roller to ensure that the width of the packaging bag is consistent with the guide channel. After pressing, the packaging bag slides out of the operating table 4 through the inclined dropping plate 3 to achieve continuous collection. Among them, multiple insertion rods 22 are evenly distributed along the inclined surface of the feeding plate to enhance stability, and the arrayed limiting holes 29 cooperate with the limiting blocks 28 to provide multiple fixing options.
[0050] In summary, this invention significantly improves the uniformity of pressing in both thickened and thin-walled areas through a dual-stage pressure roller design; the symmetrical feeding plate combined with a tension spring and insert rod limiting mechanism greatly suppresses bag conveying deviation; the adaptive adjustment mechanism for the limiting plate spacing can precisely match the roller width, ensuring that the bag width and guide spacing are consistent, completely solving the problem of pressure deviation; the multi-position limiting holes and limiting blocks effectively prevent feeding plate displacement caused by excessive tension spring traction; and the inclined design of the discharge plate greatly improves the collection efficiency of pressed bags. The overall structure significantly enhances edge pressing accuracy and production continuity, reducing scrap rate and the frequency of manual intervention.
[0051] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A limiting and guiding structure for a sealing roller of a packaging bag, characterized in that, include: The operating table (4), the pressing mechanism (1) set on it, the left feeding plate (2) and the right feeding plate (26) symmetrically arranged on the front side of the pressing mechanism (1), and the limiting plate (21) set on the outside of the feeding plate. The left feeding plate (2) and the right feeding plate (26) are connected by at least one tension spring (25), and both are provided with insert rods (22) through them laterally. The left feeding plate (2) and the right feeding plate (26) are both inclined surfaces, and the limiting plate (21) is an inclined plate with the same shape as the two but with a slightly larger area; The insertion rod (22) is fixed to the fixing plate (23) of the operating table (4) by the connecting plate (24), and the fixing plate (23) is located between the two feeding plates.
2. The structure according to claim 1, characterized in that: The pressing mechanism (1) is equipped with a double-section pressure roller, the middle section of which is used to roll the thickened area of the packaging bag, and the two end sections are used to roll the thin-walled area.
3. The structure according to claim 1, characterized in that: The bottom of the outer side of the limiting plate (21) is provided with a limiting ring (27), and a limiting block (28) is inserted into the limiting ring (27). A limiting hole (29) is opened on the top surface of the operating table (4). The limiting block (28) can be inserted into the limiting hole (29) to constrain the displacement of the feeding plate.
4. The structure according to claim 3, characterized in that: The top side of the limiting plate (21) is provided with a first rotating shaft (211), the first rotating shaft (211) is hinged to a first rotating rod (212), the end of the first rotating rod (212) is provided with a second rotating shaft (213), the second rotating shaft (213) is hinged to a second rotating rod (214); the end of the second rotating rod (214) is flush with the inner side of the limiting plate (21) and is used to abut against the side of the roller of the pressing mechanism (1) to adapt to the adjustment of the distance between the two limiting plates (21).
5. The structure according to claim 1, characterized in that: A material drop plate (3) is also provided, which is inclined at the end of the operating table (4) to guide the pressed packaging bag to slide down.
6. The structure according to claim 1, characterized in that: The insert rod (22) consists of multiple rods, which are evenly distributed along the inclined surface of the feeding plate.
7. The structure according to claim 4, characterized in that: The limiting holes (29) are arranged in multiple arrays, and the matching limiting blocks (28) realize the multi-position fixing of the feeding plate.