Material belt conveying and adjusting device for bag making machine

Abstract

The utility model discloses a material belt conveying and adjusting device for a bag making machine, which is arranged on a rack of the bag making machine and is positioned in front of a sealing and cutting station, the material belt conveying and adjusting device comprises a plurality of guide roll shafts, a limiting plate and a double-end lead screw, the plurality of guide roll shafts are arranged in parallel and are horizontally erected on wallboards on two sides of the rack, and a film material belt is wound on the guide roll shafts and then is conveyed to the sealing and cutting station; the two limiting plates are slidably arranged on the guide roller shaft in a face-to-face manner, are perpendicular to the guide roller shaft and are in sliding guide connection with the guide roller shaft through guide check rings; the inner end face of the guide check ring limits the material edge of the film material belt. The double-end lead screw is rotationally connected to a side wall plate of the rack and is parallel to the guide roller shaft, and two threaded sections, opposite in rotation direction, of the double-end lead screw are connected with the limiting plates through threaded sleeves respectively. According to the material belt conveying and adjusting device for the bag making machine, the left-right position of a film material belt can be accurately adjusted so that the film material belt can be aligned with a punching knife at a punching station, a produced plastic bag punching opening can be centered, and the widths of lifting handles on the two sides are the same.

Description

Technical Field

[0001] This utility model relates to the field of bag making machine technology, and in particular to a material conveying and adjusting device for a bag making machine. Background Technology

[0002] A bag-making machine is a machine used to produce various plastic packaging bags. In the processing of vest-style plastic bags, the bag-making machine typically uses a whole roll of plastic film for feeding, which sequentially goes through unwinding, sealing, cutting, punching, and finally outputting stacks of plastic bags. To ensure the continuous and stable operation of the sealing and cutting stations, especially at the punching station where lateral deviation of the film strip can lead to a significant difference in the width of the handles on both sides, it is necessary to ensure that the film strip conveyed to the sealing and cutting stations is centered and does not deviate laterally.

[0003] Existing bag-making machines often use a correction mechanism to straighten the film strip entering the sealing and cutting station. Most existing correction mechanisms employ a set of left-right swinging correction rollers, using this swing to align the conveyed film strip. However, this type of correction mechanism lacks stability in adjusting the alignment of continuously conveyed film strips and exhibits a lag. If the left-right offset of the film strip is unstable when it enters the punching station, significant width deviations in the handles on both sides of the top opening of the plastic bag can occur, potentially leading to defective products. Existing correction mechanisms often fail to meet alignment requirements.

[0004] Therefore, it is necessary to develop a material conveyor adjustment device for bag making machines to address the above-mentioned defects. Utility Model Content

[0005] The purpose of this invention is to provide a material conveyor adjustment device for a bag making machine, which can accurately adjust the left and right position of the film material belt to align it with the punch at the punching station, so that the punch of the produced plastic bag is centered and the handles on both sides are the same width.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] This utility model discloses a material conveying and adjusting device for a bag making machine, which is installed on the frame of the bag making machine and located in front of the sealing and cutting station. It includes guide rollers, limiting plates, and double-ended screws. Multiple guide rollers are arranged in parallel and horizontally mounted on the two side walls of the frame. The film material is conveyed to the sealing and cutting station after passing through the guide rollers. Two limiting plates are slidably mounted face-to-face on the guide rollers. The limiting plates are perpendicular to the guide rollers and are slidably guided to the guide rollers through guide retaining rings. The inner end face of the guide retaining ring limits the edge of the film material. The double-ended screw is rotatably connected to the side wall of the frame. The double-ended screw is parallel to the guide rollers, and the two threaded sections of the double-ended screw with opposite directions of rotation are connected to the limiting plates through threaded sleeves.

[0008] Furthermore, the guide roller shaft is made of chrome-plated optical shaft, and the film strip slides and rubs through the guide roller shaft; both ends of the guide roller shaft are fixed to the side wall plates of the frame by bolts.

[0009] Furthermore, in the double-line bag making machine, this device consists of two sets, located between the side wall panels and the middle wall panel of the frame, respectively.

[0010] Furthermore, it also includes a centering mechanism, which is disposed between the double-ended lead screw and the side wall plate of the frame, and the centering mechanism can realize the same-direction translation of the two limiting plates.

[0011] Furthermore, the centering mechanism includes a support sleeve, a mounting sleeve, and a handwheel. The double-ended lead screw is coaxially mounted in the central hole of the support sleeve via a bearing, and the handwheel is mounted on the outer end of the double-ended lead screw. The outer wall of the support sleeve is threadedly connected to the threaded central hole of the mounting sleeve, and the mounting sleeve is bolted to the side wall plate of the frame via an end plate flange.

[0012] Furthermore, the centering mechanism also includes a large lock nut, which is threaded onto the outer wall thread of the support sleeve and locked to the end face of the mounting sleeve.

[0013] Furthermore, a retaining ring groove is provided at the inner end of the double-ended lead screw, and a retaining ring is provided in the retaining ring groove to prevent the threaded sleeve from disengaging.

[0014] Furthermore, the guide rings are fixedly connected to the side wall of the limiting plate facing the film strip. The thickness of the multiple guide rings is different, and the thickness of the guide rings gradually increases from the inlet end to the outlet end of the film strip.

[0015] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0016] This utility model discloses a material conveyor adjustment device for a bag-making machine. Two limiting plates, driven by a double-headed screw, move in opposite directions to limit the movement of the conveyed film strip, ensuring the strip is centered on the guide roller shaft and conveyed to the sealing and cutting station. The guide ring facilitates the guiding sliding of the limiting plate and the guide roller shaft. Furthermore, the contact between the guide ring end face and the edge of the film strip minimizes resistance to scraping against the entire inner wall of the limiting plate along the conveyor line, facilitating adjustment. This material conveyor adjustment device for bag-making machines can precisely adjust the left and right position of the film strip to align with the punch at the punching station, ensuring the punched opening of the produced plastic bags is centered and the handles on both sides are of equal width.

[0017] Furthermore, by using bright bars to manufacture the guide roller shaft, the sliding friction resistance of the film strip on the guide roller shaft is reduced, while facilitating winding and conveying. By adding the centering mechanism between the double-ended screw and the side wall plate of the frame, it is possible to synchronously translate the two limiting plates to achieve centering when the symmetrical center plane of the limiting plate and the center plane of the sealing and cutting station are misaligned, avoiding the hassle of reinstalling the double-ended screw. Through the threaded connection of the support sleeve and the mounting sleeve, rotating the support sleeve utilizes the relationship between the rotation angle and the pitch to achieve precise axial position adjustment of the support sleeve. Locking the support sleeve and mounting sleeve to the end face of the mounting sleeve with a large lock nut ensures a secure fit and prevents loosening. The circlip groove and circlip design enable mechanical limiting of the threaded sleeve's extreme positions, preventing the limiting plate from detaching due to over-adjustment. The gradually increasing thickness of the guide rings passing through from feed to discharge gradually reduces the gap between the film strip and the guide ring, stabilizing the left and right position of the film strip. The left and right positions of the membrane strip can be adjusted by a manual correction mechanism in conjunction with a subsequent double-headed lead screw and a limit plate, which can achieve a relatively stable adjustment result. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 This is a partial front view of a bag-making machine to which the material conveyor adjustment device of this utility model is installed;

[0020] Figure 2 This is a partial right-side view of a bag-making machine equipped with the material conveyor adjustment device for the bag-making machine of this utility model;

[0021] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure of the AA section;

[0022] Figure 4 A partial three-dimensional structural diagram of a bag-making machine for installing the material conveyor adjustment device of this utility model;

[0023] Figure 5 This is a three-dimensional structural diagram of the material conveyor adjustment device for the bag making machine of this utility model;

[0024] Figure 6 This is a front view structural diagram of the material conveyor adjustment device for a bag making machine according to this utility model;

[0025] Figure 7 This is a schematic diagram of the front sectional view of the double-ended lead screw section of this utility model.

[0026] Explanation of reference numerals in the attached drawings: 1. Guide roller shaft; 2. Limiting plate; 201. Guide retaining ring; 202. Threaded sleeve; 203. Embedded nut; 3. Double-ended lead screw; 301. Left-hand threaded section; 302. Right-hand threaded section; 4. Support sleeve; 5. Mounting sleeve; 6. Large lock nut; 7. Handwheel; 8. Limiting block; 9. Manual correction mechanism; 10. Frame; 11. Intermediate wall plate; 12. Film strip. Detailed Implementation

[0027] The core of this utility model is to provide a material conveyor adjustment device for a bag making machine, which can accurately adjust the left and right position of the film material belt to align it with the punch at the punching station, so that the punch of the produced plastic bag is centered and the handles on both sides are the same width.

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. 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.

[0029] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "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, they should not be construed as limitations on this utility model.

[0030] Refer to the attached diagram. Figure 1 This is a partial front view of a bag-making machine to which the material conveyor adjustment device of this utility model is installed; Figure 2 This is a partial right-side view of a bag-making machine equipped with the material conveyor adjustment device for the bag-making machine of this utility model; Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure of the AA section; Figure 4 A partial three-dimensional structural diagram of a bag-making machine for installing the material conveyor adjustment device of this utility model; Figure 5 This is a three-dimensional structural diagram of the material conveyor adjustment device for the bag making machine of this utility model; Figure 6 This is a front view structural diagram of the material conveyor adjustment device for a bag making machine according to this utility model; Figure 7 This is a schematic diagram of the front sectional view of the double-ended lead screw section of this utility model.

[0031] In one specific implementation, such as Figures 1-7As shown, a material conveyor adjustment device for a bag-making machine is installed on the frame 10 of the bag-making machine and located in front of the sealing and cutting station, which is located in front of the punching station. This utility model's material conveyor adjustment device for a bag-making machine includes a guide roller shaft 1, a limiting plate 2, and a double-headed screw 3. Figures 1-6 The image shows only a portion of the bag-making machine, omitting the sealing and cutting station and the punching station. Multiple guide rollers 1 are arranged parallel to each other and horizontally mounted on the side walls of the frame 10. The film strip 12 is fed to the sealing and cutting station after passing through the guide rollers 1. Two limiting plates 2 are slidably mounted face-to-face on the guide rollers 1. The limiting plates 2 are perpendicular to the guide rollers 1 and are slidably guided to them via guide rings 201. That is, the number of guide rings 201 on each limiting plate 2 corresponds to the number of guide rollers 1. The inner end face of the guide ring 201 contacts and limits the edge of the film strip 12. The double-ended lead screw 3 is rotatably connected to the side wall plate of the frame 10. The double-ended lead screw 3 is parallel to the guide roller shaft 1. The two threaded sections of the double-ended lead screw 3 with opposite directions of rotation include a left-hand threaded section 301 and a right-hand threaded section 302. The left-hand threaded section 301 and the right-hand threaded section 302 are connected by a threaded sleeve 202 and the limiting plates 2 on the left and right sides, respectively.

[0032] The double-headed screw 3 drives two limiting plates 2 to move in opposite directions, which can limit the film material belt 12 conveyed in the middle, ensuring that the film material belt 12 is conveyed centered on the guide roller shaft 1 to the sealing and cutting station. The guide retaining ring 201 facilitates the guiding sliding of the limiting plate 2 and the guide roller shaft 1. On the other hand, the end face of the guide retaining ring 201 contacts the edge of the film material belt 12, which has less resistance to the entire inner wall of the limiting plate 2 on the film material belt 12 conveying line due to scraping contact, making it easy to adjust. The material belt conveying adjustment device of this utility model bag making machine can accurately adjust the left and right position of the film material belt to align it with the punch of the punching station, so that the punch of the produced plastic bag is centered and the handles on both sides are the same width.

[0033] In one specific embodiment of this utility model, such as Figures 1-6 As shown, the guide roller shaft 1 is made of chrome-plated optical shaft, that is, the guide roller shaft 1 is coated with a bright, wear-resistant coating. The film strip 12 slides and rubs along the guide roller shaft 1. The two ends of the guide roller shaft 1 are fixed to the side wall plates of the frame 10 by bolts.

[0034] By using a bright bar to make the guide roller shaft 1, the sliding friction resistance of the film strip 12 on the guide roller shaft 1 is reduced, and at the same time, it is easier to realize winding and conveying.

[0035] In one specific embodiment of this utility model, such as Figures 1-6As shown, in a double-line bag making machine, two 450 mm wide film strips 12 are simultaneously conveyed and bag-making processes. In this application, there are two sets of material strip conveying adjustment devices, one between the left and middle wall panels 11 of the frame 10, and the other between the right and middle wall panels 11. That is, the material strip conveying adjustment device of this application is applicable not only to single-line bag making machines but also to double-line bag making machines.

[0036] In one specific embodiment of this application, such as Figures 5-7 As shown, the material conveying adjustment device for the bag making machine of this utility model also includes a centering mechanism. The centering mechanism is set between the double-headed screw 3 and the side wall plate of the frame 10. The centering mechanism can realize the same-direction translation of the two limiting plates 2.

[0037] By adding the centering mechanism between the double-ended lead screw 3 and the side wall plate of the frame 10, it is easy to synchronously move the two limit plates 2 to achieve centering when the symmetrical center plane of the limit plate 2 and the center plane of the sealing and cutting station are misaligned, thus avoiding the trouble of reinstalling the double-ended lead screw 3.

[0038] Specifically, such as Figures 5-7 As shown, the centering mechanism includes a support sleeve 4, a mounting sleeve 5, and a handwheel 7. A double-ended lead screw 3 is coaxially mounted in the central hole of the support sleeve 4 via two radial bearings, and the handwheel 7 is mounted on the outer end of the double-ended lead screw 3. The outer wall of the support sleeve 4 is threaded into the threaded central hole of the mounting sleeve 5, and the mounting sleeve 5 is bolted to the side wall plate of the frame 10 via an end flange. Rotating the support sleeve 4 to cause axial movement relative to the mounting sleeve 5 allows for axial position adjustment of the double-ended lead screw 3, thereby enabling the synchronous translation of the two limiting plates 2 for centering operations.

[0039] Obviously, the support sleeve 4 and the mounting sleeve 5 can also be connected by a sliding insertion method and locked in position using a set screw. Adjusting the insertion depth of the support sleeve 4 into the hole of the mounting sleeve 5 achieves axial position adjustment of the double-ended lead screw 3, and the position is locked using a set screw radially mounted on the mounting sleeve 5. Similar simple replacement methods all fall within the protection scope of this utility model.

[0040] Specifically, such as Figures 5-7 As shown, the centering mechanism also includes a large lock nut 6, which is threaded onto the outer wall thread of the support sleeve 4 and is locked to the end face of the mounting sleeve 5.

[0041] Specifically, the cylindrical outer wall of the large lock nut 6 is provided with multiple wrench holes evenly distributed around its circumference, making it easy to tighten and loosen using a hook wrench.

[0042] The support sleeve 4 and the mounting sleeve 5 are connected by threads. By rotating the support sleeve 4, the axial position of the support sleeve 4 can be precisely adjusted using the relationship between the rotation angle and the thread pitch. The support sleeve 4 and the mounting sleeve 5 are locked together by the large lock nut 6 to prevent loosening.

[0043] In one specific embodiment of this application, such as Figure 6 and Figure 7 As shown, a retaining ring groove is provided at the inner end of the double-ended lead screw 3, and a retaining ring is provided in the retaining ring groove to prevent the threaded sleeve 202 from disengaging.

[0044] By setting the snap ring groove and snap ring, the threaded sleeve 202 can be mechanically limited to its extreme position, avoiding the limit plate 2 from falling off due to over-adjustment.

[0045] In one specific embodiment of this utility model, such as Figure 3 and Figure 6 As shown, the guide ring 201 is fixedly connected to the side wall of the limiting plate 2 facing the film belt 12. The thickness of the multiple guide rings 201 is different, and the thickness of the guide ring 201 gradually increases from the feed end to the discharge end of the film belt 12.

[0046] Specifically, such as Figure 3 As shown, the thickness difference between two adjacent guide rings 201 is in the range of 0.2 to 0.5 mm.

[0047] By gradually increasing the thickness of the guide rings 201 as they pass through from feeding to discharging, the gaps between the film belts 12 and the material belts 12 gradually decrease, thereby stabilizing the position of the film belts 12.

[0048] In one specific embodiment of this utility model, such as Figures 1-4 As shown, it also includes a manual alignment mechanism 9, which is located at the top of the frame 10 and at the feed front end of the guide roller shaft 1. The manual alignment mechanism 9 adopts the alignment roller group structure described in the background section, and the alignment roller group is adjusted by inputting a hand-cranked rotary wheel.

[0049] The left and right positions of the membrane strip 12 can be adjusted by the manual correction mechanism 9 and the subsequent double-headed lead screw 3 and limit plate 2, which can achieve a relatively stable adjustment result.

[0050] The working principle of the material conveying adjustment device for the bag making machine of this utility model is as follows: Before entering the sealing and cutting station, the film material belt 12 released from the unwinding station is first turned downward by the guide roller by the manual correction mechanism 9, and then passes through multiple guide roller shafts 1 in sequence upward and backward, finally being fed into the sealing and cutting station. The correction mechanism 9 can perform preliminary correction for film material belt 12 with serious deviation. The operator manually cranks the handwheel 7, which drives the double-ended screw 3 to rotate. The threaded section 301 and the right-hand threaded section 302 respectively drive the two limit plates 2 to move towards each other. The distance between the two guide retaining rings 201 on the same guide roller shaft 1 decreases and gradually adapts to the width of the film material belt 12. This ensures that the distance between the two guide retaining rings 201 on the last guide roller shaft 1 is equal to the width of the film material belt 12, ensuring that the film material belt 12 is stably output backward. When it is found that the center plane of the limiting plate 2 is misaligned with the center plane of the sealing and cutting station, causing the sealing and cutting edge of the film strip 12 to be skewed, use a hook wrench to loosen the large lock nut 6, and use a pipe wrench to rotate the support sleeve 4, so that it moves axially relative to the mounting sleeve 5. This allows for the axial position adjustment of the double-ended screw 3, thereby enabling the synchronous translation of the two limiting plates 2 for centering. After successful centering, use a hook wrench to tighten the large lock nut 6 back onto the end face of the mounting sleeve 5.

[0051] In summary, the double-headed screw 3 drives the two limiting plates 2 to move in opposite directions, which can limit the film material belt 12 conveyed in the middle, ensuring that the film material belt 12 is conveyed centered on the guide roller shaft 1 to the sealing and cutting station. The guide retaining ring 201 facilitates the guiding sliding of the limiting plate 2 and the guide roller shaft 1. Furthermore, the contact between the end face of the guide retaining ring 201 and the edge of the film material belt 12 reduces the resistance to scraping contact along the entire inner wall of the limiting plate 2 on the film material belt 12 conveying line, making adjustment easier. This utility model's material belt conveying adjustment device for bag making machines can precisely adjust the left and right position of the film material belt to align with the punch at the punching station, ensuring that the punched opening of the produced plastic bags is centered and the handle widths on both sides are the same. In addition, by using a bright rod to make the guide roller shaft 1, the sliding friction resistance of the film material belt 12 on the guide roller shaft 1 is reduced, while also facilitating winding and conveying. By adding the centering mechanism between the double-ended lead screw 3 and the side wall plate of the frame 10, the two limit plates 2 can be synchronously moved to achieve centering when the symmetrical center plane of the limit plate 2 and the center plane of the sealing and cutting station are misaligned, avoiding the trouble of reinstalling the double-ended lead screw 3. Through the threaded connection between the support sleeve 4 and the mounting sleeve 5, the axial position of the support sleeve 4 can be precisely adjusted by rotating the support sleeve 4 using the relationship between the rotation angle and the pitch. By locking the support sleeve 4 and the mounting sleeve 5 to the end face of the mounting sleeve 5 with the large lock nut 6, the support sleeve 4 and the mounting sleeve 5 can be locked to prevent loosening. Through the setting of the snap ring groove and snap ring, the limit position of the threaded sleeve 202 can be mechanically limited, avoiding the limit plate 2 from falling off due to over-adjustment. By gradually increasing the thickness of the guide rings 201 that pass through from feeding to discharging, the gap of the film strip 12 gradually decreases, which plays a role in stabilizing the left and right position of the film strip 12. The left and right positions of the membrane strip 12 can be adjusted by the manual correction mechanism 9 and the subsequent double-headed lead screw 3 and limit plate 2, which can achieve a relatively stable adjustment result.

[0052] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0053] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A material conveyor adjustment device for a bag making machine, mounted on the frame (10) of the bag making machine and located in front of the sealing and cutting station, characterized in that, The machine includes a guide roller shaft (1), a limiting plate (2), and a double-ended screw (3). Multiple guide roller shafts (1) are arranged in parallel and horizontally mounted on the two side walls of the frame (10). The film strip (12) is wound around the guide roller shaft (1) and conveyed to the sealing and cutting station. Two limiting plates (2) are slidably mounted face to face on the guide roller shaft (1). The limiting plates (2) are perpendicular to the guide roller shaft (1) and are slidably guided to the guide roller shaft (1) through a guide retaining ring (201). The inner end face of the guide retaining ring (201) limits the edge of the film strip (12). The double-ended screw (3) is rotatably connected to the side wall of the frame (10). The double-ended screw (3) is parallel to the guide roller shaft (1). The two threaded sections of the double-ended screw (3) with opposite directions of rotation are connected to the limiting plate (2) through a threaded sleeve (202) and the limiting plate (2), respectively.

2. The material conveyor adjustment device for a bag-making machine according to claim 1, characterized in that: The guide roller shaft (1) is made of chrome-plated optical shaft, and the film strip (12) slides and rubs through the guide roller shaft (1); the two ends of the guide roller shaft (1) are fixed to the side wall plate of the frame (10) by bolts.

3. The material conveyor adjustment device for a bag-making machine according to claim 1, characterized in that: In the double-line bag making machine, this device consists of two sets, located between the side wall plate and the middle wall plate (11) of the frame (10) respectively.

4. The material conveyor adjustment device for a bag-making machine according to claim 1, characterized in that: It also includes a centering mechanism, which is disposed between the double-ended lead screw (3) and the side wall plate of the frame (10), and the centering mechanism can realize the same-direction translation of the two limiting plates (2).

5. The material conveyor adjustment device for a bag-making machine according to claim 4, characterized in that: The centering mechanism includes a support sleeve (4), a mounting sleeve (5), and a handwheel (7). The double-ended lead screw (3) is coaxially mounted in the central hole of the support sleeve (4) via a bearing, and the handwheel (7) is mounted on the outer end of the double-ended lead screw (3). The outer wall of the support sleeve (4) is threadedly connected to the threaded central hole of the mounting sleeve (5), and the mounting sleeve (5) is connected to the side wall plate of the frame (10) via an end plate flange bolt.

6. The material conveyor adjustment device for a bag-making machine according to claim 5, characterized in that: The centering mechanism also includes a large lock nut (6), which is threadedly connected to the outer wall thread of the support sleeve (4) and locked to the end face of the mounting base (5).

7. The material conveyor adjustment device for a bag-making machine according to claim 1, characterized in that: The inner end of the double-ended lead screw (3) is provided with a retaining ring groove, and a retaining ring is provided in the retaining ring groove to prevent the threaded sleeve (202) from disengaging.

8. The material conveyor adjustment device for a bag-making machine according to claim 1, characterized in that: The guide ring (201) is fixedly connected to the side wall of the limiting plate (2) facing the film strip (12). The thickness of the multiple guide rings (201) is different, and the thickness of the guide ring (201) gradually increases from the feed end to the discharge end of the film strip (12).

Images