Gluing device of bag making equipment and bag making equipment

Abstract

The utility model discloses a gluing device of bag making equipment and the bag making equipment, the gluing device comprises a device support, and further comprises a glue uniformizing roller and a gluing roller which are rotatably arranged on the device support, and the glue uniformizing roller and the gluing roller are arranged on the device support side by side and can rotate in opposite directions. Wherein the roller surfaces of the glue uniformizing roller and the glue spreading roller are at least partially contacted. A glue blocking mechanism is further arranged on the rotating downstream side of the glue uniformizing roller and the glue spreading roller, the glue blocking mechanism comprises a glue blocking part arranged on the device support, and the glue blocking part faces a roller surface contact part between the glue uniformizing roller and the glue spreading roller in the rotating direction of the glue uniformizing roller and can move relative to the roller surface contact part. The glue blocking part can collect glue thrown out by the glue uniformizing roller and the glue coating roller, the glue blocking part is further arranged to be capable of moving relative to the roller surface contact part, the thrown-out glue can be collected in different areas of the glue blocking part in a dispersed mode, and the situation that the thrown-out glue is concentrated in a certain position of the glue blocking part can be avoided; the glue is prevented from being accumulated and solidified at a certain part of the glue blocking part.

Description

Technical Field

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

[0002] Bag making equipment is the equipment used in the existing technology to produce packaging bags. In the bag forming process, there are some steps that require applying glue to the bag sheet or packaging bag. For example, the bonding parts of the bag opening fold, the bonding parts of the side, and the bonding parts of the bag bottom area all need to be glued before bonding. Therefore, it is necessary to set up a glue application device to apply glue.

[0003] For example, some existing glue-coating devices include rotating glue-coating rollers coated with glue. When packaging bags or bag sheets are conveyed to the glue-coating station via a conveyor, the glue-coating rollers apply glue to the packaging bags or bag sheets. However, as the glue-coated rollers rotate, the glue applied to the outer wall of the rollers may fly off, for example, onto the packaging bags, bag sheets, or other components within the bag-making equipment. This can result in the packaging bags becoming defective due to glue stains, or the splashed glue sticking to other components of the bag-making equipment, affecting the bag-making process. Although some improvements include leveling rollers and coating rollers to make the glue on the coating rollers more uniform and reduce glue splashing, glue can still be splashed off at the contact points between the leveling rollers and coating rollers when they rotate relative to each other.

[0004] Therefore, in the prior art, the glue coating roller of the glue coating device of the bag making equipment has the problem that the glue may be thrown out when applying glue, which may affect the production of packaging bags. Utility Model Content

[0005] The purpose of this application is to solve the problem in the prior art where the glue coating roller of the glue coating device of the bag making equipment may cause glue to be thrown out during the glue coating process, which may affect the production of packaging bags.

[0006] To address the aforementioned technical problems, embodiments of this application disclose a coating device for a bag-making apparatus, comprising a device support, and further comprising a leveling roller and a coating roller rotatably mounted on the device support. The leveling roller and the coating roller are arranged side-by-side on the device support and can rotate in opposite directions. The roller surfaces of the leveling roller and the coating roller are at least partially in contact.

[0007] A glue-blocking mechanism is also provided on the downstream side of the rotating glue-spreading roller and the glue-coating roller. The glue-blocking mechanism includes a glue-blocking part provided on the device support. The glue-blocking part faces the roller surface contact part between the glue-spreading roller and the glue-coating roller in the rotation direction of the glue-spreading roller and can move relative to the roller surface contact part.

[0008] By employing the above technical solution, the roller surfaces of the leveling roller and the coating roller are at least partially in contact. This allows the adhesive on the leveling roller to be evenly applied to the coating roller through the mutual rotation of the two rollers, resulting in a more uniform adhesive thickness on the coating roller. This facilitates the coating roller's ability to evenly apply the adhesive to the areas of the packaging bag requiring application. The adhesive-blocking part of the adhesive-blocking mechanism faces the contact area between the roller surfaces of the leveling roller and the coating roller. When adhesive is thrown out relative to the leveling roller or the coating roller due to centrifugal force, it is collected on the adhesive-blocking part, preventing adhesive from splashing onto the packaging bag or other components within the equipment.

[0009] Furthermore, by configuring the glue-blocking part to be movable relative to the roller surface contact part, the relative position of the glue-blocking part relative to the roller surface contact part can change. For example, when a rotatable glue-blocking roller is used, the glue-blocking part is the roller wall of the glue-blocking roller. The rotation of the glue-blocking roller can disperse and collect the splashed glue on the roller wall of the glue-blocking roller. For example, when a movable glue-blocking plate is used, the glue-blocking part is the plate surface of the glue-blocking plate. The movement of the glue-blocking plate can disperse and collect the splashed glue on the plate surface of the glue-blocking plate. Therefore, the glue-blocking part can move relative to the roller surface contact part, and the splashed glue can be dispersed and collected in different areas of the glue-blocking part. This can prevent the splashed glue from concentrating in a certain part of the glue-blocking part, and prevent the glue from accumulating and solidifying in a certain part of the glue-blocking part, so that the glue coating device can operate continuously. Moreover, making the glue-blocking part movable, compared with a fixed glue-blocking part, can also provide a larger glue-blocking area, collect more glue, and improve glue-blocking collection efficiency.

[0010] The embodiments of this application also disclose a glue coating device for a bag making equipment. The glue blocking mechanism includes a glue blocking roller that is rotatably mounted on a device support parallel to the glue spreading roller. The roller surface of the glue blocking roller serves as a glue blocking part and faces the roller surface contact part in the rotation direction of the glue spreading roller.

[0011] By adopting the above technical solution, after setting the glue-blocking roller, when the glue-blocking roller is fixed, the side of the roller facing the glue-spreading roller and the glue-applying roller is the glue-blocking part. When the glue-blocking roller rotates, the glue-blocking part is the entire roller surface of the glue-blocking roller. Moreover, the side of the roller facing the glue-spreading roller and the glue-applying roller is constantly changing when the glue-blocking roller rotates. Therefore, the splashed glue can be collected in a dispersed manner on the outer wall of the glue-blocking roller as a whole, avoiding glue accumulation in a certain part of the glue-blocking roller.

[0012] The embodiments of this application also disclose a glue coating device for a bag making equipment. The glue blocking mechanism further includes a glue blocking scraper, which is fixedly disposed on one side of the glue blocking roller along the axial direction of the glue blocking roller, and one side edge of the glue blocking scraper abuts against the roller surface of the glue blocking roller.

[0013] This application also discloses a glue-applying device for a bag-making machine. The glue-blocking mechanism further includes a scraper mounting rod, which is fixedly mounted on the device bracket and located on the side of the glue-blocking roller away from the roller surface contact portion. The glue-blocking scraper is detachably mounted on the scraper mounting rod, and the scraper mounting rod is arranged parallel to and spaced apart from the glue-blocking roller. Furthermore, a metal scraper strip is provided on the side of the glue-blocking scraper near the glue-blocking roller. The length of the metal scraper strip is equal to or greater than the length of the glue-blocking roller, and the metal scraper strip abuts against the glue-blocking roller along the tangential direction of the roller surface.

[0014] By adopting the above technical solution, one edge of the adhesive-blocking scraper abuts against the roller surface of the adhesive-blocking roller. This edge of the scraper can scrape off the adhesive collected on the roller, preventing adhesive buildup and hardening. Cleaning only requires cleaning the scraper, which is simpler and more convenient than cleaning the roller itself. Furthermore, a metal scraper abuts against the roller along the tangential direction of its surface, enabling comprehensive scraping of the entire roller surface. The metal scraper improves the service life of the adhesive-blocking roller and ensures its surface cleanliness.

[0015] The embodiments of this application also disclose a gluing device for a bag making equipment, wherein the gap between the glue-blocking roller and the glue-spreading roller is in the range of 5 to 10 mm, and the gap between the glue-blocking roller and the glue-spreading roller is in the range of 12 to 20 mm.

[0016] Using the above technical solution, since the glue-spreading roller is coated with glue first, and then the glue is transferred to the coating roller, the amount of glue on the glue-spreading roller is relatively large. Therefore, the gap between the glue-blocking roller and the glue-spreading roller is set to be small, and the gap between the glue-blocking roller and the coating roller is set to be large. That is, the glue-blocking roller is closer to the glue-spreading roller, which makes it easier to collect the glue splashed off the glue-spreading roller, and can also collect the glue splashed off the coating roller.

[0017] This application also discloses a glue-applying device for a bag-making machine, wherein a glue-applying roller and a glue-blocking roller can rotate synchronously relative to a device support, and the glue-applying roller is rotatably mounted on the device support and drivenly connected to the packaging bag conveying component of the bag-making machine. A drive mechanism is provided on the device support, and the drive mechanism includes a drive motor and a transmission chain assembly.

[0018] The transmission chain assembly includes sprockets respectively disposed on the same side end of the spreading roller and the blocking roller, and a transmission chain extending around each sprocket. The drive motor is connected to the end of the spreading roller for transmission.

[0019] Using the above technical solution, the glue-spreading roller and the glue-blocking roller rotate synchronously by driving the transmission chain assembly through the drive motor. The glue-spreading roller is connected to the packaging bag conveying component of the bag making equipment. During the glue-spreading process, the glue-spreading roller is responsible for evenly applying the glue to its own roller surface, and then the glue-spreading roller accurately transfers the glue on the glue-spreading roller to the packaging bag. The glue-blocking roller effectively blocks any glue that may be thrown out. Furthermore, the glue-spreading roller is connected to the packaging bag conveying component, and the glue-spreading roller can accurately transfer and apply the glue to the corresponding glue-spreading position of each packaging bag.

[0020] Furthermore, the device support includes a first support and a second support that are separable from each other and are disposed on the support body. The glue-spreading roller and the glue-blocking roller are rotatably disposed on the first support, and the glue-applying roller is rotatably disposed on the second support.

[0021] A separation mechanism is provided on one side of the first bracket. The separation mechanism includes a separation drive cylinder fixed on the bracket body and a separation swing arm. One end of the separation swing arm is connected to the output end of the separation drive cylinder, and the other end is rotatably connected to the first bracket. The drive cylinder can drive the separation swing arm and link the first bracket to separate from or move closer to the second bracket.

[0022] Using the above technical solution, when the bag making equipment needs to be stopped for inspection or specification change, the separation drive cylinder can drive the separation swing arm and link the first support and the second support to separate. That is, at this time, the contact parts of the roller surfaces of the leveling roller and the coating roller are separated. The leveling roller continues to rotate to prevent the glue in the leveling roller and the glue storage component from drying and solidifying. The separation of the coating roller and the leveling roller can prevent the leveling roller from applying glue to the coating roller and prevent the coating roller from applying glue in the non-working state. When the bag making equipment resumes work, the separation drive cylinder drives the separation swing arm and links the first support and the second support to approach each other. The contact parts of the roller surfaces of the leveling roller and the coating roller contact each other and apply glue to the packaging bag.

[0023] This application also discloses a glue-applying device for a bag-making machine. The glue-blocking mechanism includes a glue-blocking plate and a glue-scraping strip disposed on one side of the glue-blocking plate. The glue-blocking plate is mounted on a device support parallel to the axial direction of the glue-applying roller. The side of the glue-blocking plate facing the roller surface contact portion serves as the glue-blocking part, moving towards the roller surface contact portion in the rotation direction of the glue-applying roller. The glue-blocking plate can reciprocate relative to the device support along the plate surface extension direction. Furthermore, one edge of the glue-scraping strip abuts against one side of the glue-blocking plate.

[0024] By adopting the above technical solution, a baffle plate that can move back and forth along the extension direction of the board surface can be set up, which can increase the baffle area. The surface of the baffle plate is movable, which can prevent the splashed glue from concentrating in a certain part of the baffle plate surface and prevent glue accumulation on the baffle plate surface. The glue scraper can scrape off the glue on the baffle plate surface in time to prevent the glue from curing on the baffle plate surface.

[0025] The embodiments of this application also disclose a coating device for a bag making equipment, wherein a flexible coating pad is provided on the coating roller, and the top surface of each flexible coating pad protrudes from the roller surface of the coating roller and abuts against the roller surface of the uniform coating roller.

[0026] Using the above technical solution, the flexible coating pad protrudes from the coating roller surface and abuts against the leveling roller, allowing for more precise control of the amount of adhesive transferred from the leveling roller to its own surface during rotation. Furthermore, the amount of adhesive applied can be controlled or adjusted by changing the thickness and volume of the flexible coating pad. Moreover, the flexible nature of the pad provides a buffering effect during contact and separation from the leveling roller, reducing adhesive splashing and preventing excessive adhesive from being ejected.

[0027] The embodiments of this application also disclose a glue coating device for a bag making machine. A glue storage assembly is provided on the side of the glue-spreading roller away from the glue coating roller. The glue storage assembly includes a glue storage plate and glue-blocking blocks on both sides of the glue storage plate. The glue storage plate is fixedly installed on the side of the glue-spreading roller away from the glue coating roller by a mounting shaft and extends at an incline relative to the glue-spreading roller.

[0028] Each glue block extends between the glue storage plate and the glue spreading roller, and each glue block has an arc-shaped abutment portion at one end near the glue storage plate that abuts against the glue storage plate, and at the other end that adapts to abut against the roller surface of the glue spreading roller.

[0029] The area where the glue storage plate, the glue spreading roller, and the two glue blocking blocks meet forms a glue storage cavity, in which the glue is stored.

[0030] Using the above technical solution, the area where the glue storage plate, the glue spreading roller, and the two glue blocking blocks meet forms a glue storage cavity, which can conveniently store glue. There is no need to set up an additional glue storage or glue conveying mechanism on one side of the glue spreading roller, making the structure simpler and more compact. The glue in the glue storage cavity is in contact with the glue spreading roller, and the glue spreading roller can coat the glue in the glue storage cavity onto the roller wall during rotation.

[0031] The embodiments of this application also disclose a bag making apparatus, including a gluing device of any of the above-mentioned bag making apparatuses. A rotatable packaging bag conveying component is provided on the side of the gluing roller away from the dispensing roller. The packaging bag conveying component is used to convey packaging bags, and the gluing roller can rotate relative to the packaging bag conveying component to apply glue to the corresponding part of each packaging bag conveyed on the packaging bag conveying component.

[0032] The beneficial effects of this utility model are:

[0033] This utility model discloses a glue coating device for bag making equipment and bag making equipment. The glue coating device includes a glue-spreading roller and a glue-applying roller rotatably mounted on a device support. The glue-spreading roller evenly applies glue to its own roller surface, and the glue-applying roller accurately transfers the glue on the glue-spreading roller to the bottom of the packaging bag. A glue-blocking mechanism is provided downstream of the rotating glue-spreading roller and the glue-applying roller. The glue-blocking part of the glue-blocking mechanism can move relative to the contact part of the roller surface of the glue-spreading roller and the glue-applying roller, which can evenly collect the splashed glue on the glue-blocking part, preventing the splashed glue from concentrating in a certain part of the glue-blocking part, preventing glue accumulation and solidification, and avoiding glue splashing inside the equipment or on the packaging bag, thereby improving the cleanliness of the glue coating device when applying glue to the bottom of the packaging bag. Attached Figure Description

[0034] Figure 1 A schematic diagram of the overall structure of the gluing device of the bag-making equipment provided in this embodiment of the utility model;

[0035] Figure 2 A schematic diagram of the overall structure of the gluing device of the bag-making equipment provided in an embodiment of the present utility model from another perspective;

[0036] Figure 3 A partial structural schematic diagram of the glue-blocking roller and glue-blocking scraper of the glue-coating device of the bag-making equipment provided in this embodiment of the utility model;

[0037] Figure 4 A partial structural schematic diagram of the glue storage component of the glue coating device of the bag making equipment provided in this embodiment of the utility model.

[0038] Explanation of reference numerals in the attached figures:

[0039] 100. Device support;

[0040] 110. First support; 120. Second support; 130. Separation swing arm;

[0041] 200. Spreading roller;

[0042] 300. Glue-applying roller;

[0043] 310. Groove section;

[0044] 400. Glue-blocking mechanism;

[0045] 410. Glue-blocking part; 420. Glue-blocking roller; 430. Glue-blocking scraper; 431. Metal scraper strip; 440. Scraper mounting rod;

[0046] 500. Drive motor;

[0047] 510. Drive chain assembly; 511. Sprocket; 512. Drive chain;

[0048] 600. Glue storage assembly;

[0049] 610. Glue storage plate; 620. Glue blocking block; 630. Glue storage cavity. Detailed Implementation

[0050] As mentioned in the background section, when applying glue to packaging bags using a glue-coating roller, the glue applied to the outer wall of the roller will be flung off by centrifugal force as the roller rotates. This could result in the packaging bag becoming a waste bag or affecting other components within the equipment.

[0051] To address this problem, this application discloses a coating device for a bag-making machine. A glue-blocking mechanism is provided downstream of the rotating glue-spreading roller and the coating roller to block the glue. The glue-blocking part of the glue-blocking mechanism is positioned facing the roller surface contact part in the rotation direction, and the glue-blocking part is configured to be relatively movable, so that the glue can be collected dispersedly on the glue-blocking part, thereby preventing the splashed glue from concentrating in a certain part of the glue-blocking part and preventing glue accumulation and solidification.

[0052] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0053] This embodiment discloses a glue coating device for a bag-making equipment. Please refer to [link / reference]. Figure 1 The device includes a support frame 100, and further includes a leveling roller 200 and a coating roller 300 rotatably mounted on the support frame 100. The leveling roller 200 and the coating roller 300 are arranged side by side on the support frame 100, and the leveling roller 200 and the coating roller 300 can rotate in opposite directions. The roller surfaces of the leveling roller 200 and the coating roller 300 are at least partially in contact.

[0054] The glue-spreading roller 200 is used to first coat the glue on the outer side of its own roller wall. Then, the glue-spreading roller 200 and the glue-coating roller 300 roller surfaces are at least partially in contact, coating the glue onto the glue-coating roller 300, making the glue coated onto the glue-coating roller 300 more uniform. When the glue-coating roller 300 rotates, it contacts the packaging bag and coats the glue onto the corresponding area of ​​the packaging bag, such as the bottom area of ​​the bag, so as to facilitate sealing the bottom of the packaging bag.

[0055] The fact that the leveling roller 200 and the coating roller 300 can rotate in opposite directions means that, when viewed from one side, the leveling roller 200 and the coating roller 300 rotate in opposite directions and are in a state similar to mutual meshing, so that the glue on the leveling roller 200 can be stably coated onto the coating roller 300 and further reduce glue splashing.

[0056] Furthermore, the at least partial contact between the roller surfaces of the leveling roller 200 and the coating roller 300 will be explained: For example, taking the coating device applying glue to the bottom of a packaging bag as an example, when applying glue to the bottom of the packaging bag, it needs to be configured so that only a portion of the outer wall of the coating roller 300 can adhere to the glue and then be applied to the bottom area of ​​the bag. Therefore, a flexible coating structure with a certain thickness, such as foam, sponge, or rubber, can be provided on one side of the coating roller 300. The leveling roller 200 and the flexible coating structure of the coating roller 300 are in contact, and then the glue is applied to the bottom area of ​​the bag through the flexible coating structure. Alternatively, a raised portion can be provided on the roller surface of the coating roller 300. The raised portion is in contact with the leveling roller 200, and then the glue is applied to the bottom area of ​​the bag through the raised portion.

[0057] Further, please see Figure 2 When the leveling roller 200 and the coating roller 300 are arranged side by side on the device support 100, it is preferable that the leveling roller 200 and the coating roller 300 are arranged side by side along the height direction of the device support 100, and the coating roller 300 is located below the leveling roller 200 in the height direction.

[0058] The leveling roller 200 and the coating roller 300 can be rotatably mounted on the device support 100 by means of a rotating shaft, bearing or other means. Furthermore, a flexible coating layer can be provided on the outer wall of the leveling roller 200 and the coating roller 300. The leveling roller 200 and the coating roller 300 come into contact, and then the glue on the leveling roller 200 is transferred to the coating roller 300.

[0059] Further, please see Figure 1 A glue-blocking mechanism 400 is also provided downstream of the rotating parts of the spreading roller 200 and the coating roller 300. The glue-blocking mechanism 400 includes a glue-blocking part 410 mounted on the device support 100. The glue-blocking part 410 faces the roller surface contact portion (not shown in the figure) between the spreading roller 200 and the coating roller 300 in the rotation direction of the spreading roller 200, and the glue-blocking part 410 can move relative to the roller surface contact portion. With this structural design, when the glue is thrown out from the roller surface contact portion during the rotation of the spreading roller 200 and the coating roller 300, it will be collected on the glue-blocking part 410.

[0060] It should be noted that the roller surface contact part is the part where the roller surfaces of the leveling roller 200 and the coating roller 300 contact each other.

[0061] The specific structure of the glue-blocking part 410 is not limited. For example, the glue-blocking part 410 can be a rotating shaft or roller that is spaced apart on one side of the glue-spreading roller 200 and the glue-applying roller 300. The rotating shaft or roller rotates relative to the roller surface contact part. When the glue is thrown out, it is collected on the outer wall of the rotating shaft or roller, which can prevent the thrown-out glue from accumulating in a certain part.

[0062] For example, the glue-blocking part 410 can also be a baffle that is spaced apart on one side of the glue-spreading roller 200 and the glue-applying roller 300. The baffle can be a flat plate or an arc plate. The baffle is designed to be movable along the plate surface, which can also prevent the splashed glue from accumulating in a certain part of the baffle. The baffle can be slidably set on the device bracket 100 by a slide rail or a slider. The specific driving method of the baffle is not limited. For example, it can be driven by a cylinder, a linear motor, etc. This embodiment does not make a specific limitation on this.

[0063] With this design, the roller surfaces of the leveling roller 200 and the coating roller 300 are at least partially in contact. The rotation of the two rollers allows the adhesive on the leveling roller 200 to be evenly applied to the coating roller 300, resulting in a uniform adhesive thickness on the coating roller 300. This ensures that the coating roller 300 can evenly apply the adhesive to the areas of the packaging bag that require application. The adhesive-blocking part 410 of the adhesive-blocking mechanism 400 faces the roller surface contact area between the leveling roller 200 and the coating roller 300. When adhesive is thrown out relative to the leveling roller 200 or the coating roller 300 due to centrifugal force, it is collected on the adhesive-blocking part 410, preventing adhesive from splashing inside the equipment or onto the packaging bag.

[0064] Furthermore, by configuring the glue-blocking part 410 to be movable relative to the roller surface contact part, the relative position of the glue-blocking part 410 relative to the roller surface contact part can dynamically change. This allows the splashed glue to be collected in different areas of the glue-blocking part 410, preventing the splashed glue from concentrating in one part of the glue-blocking part 410 and preventing the glue from accumulating and solidifying in one part of the glue-blocking part 410, thus enabling continuous operation of the glue coating device. Moreover, configuring the glue-blocking part 410 to be movable provides a larger glue-blocking area compared to a fixed glue-blocking part 410, allowing for the collection of more glue and improving glue-blocking collection efficiency.

[0065] Please see Figure 1 In the glue coating device of the bag making equipment disclosed in this embodiment, the glue blocking mechanism 400 includes a glue blocking roller 420 which is parallel to the glue spreading roller 200 and rotatably disposed on the device support 100. The roller surface of the glue blocking roller 420 serves as a glue blocking part 410 and is in contact with the roller surface in the rotation direction of the glue spreading roller 200.

[0066] With this structural design, after the glue-blocking roller 420 is set, when the glue-blocking roller 420 rotates, a glue-blocking part 410 is formed on the side of the roller facing the glue-spreading roller 200 and the glue-applying roller 300. The glue-blocking part 410 is a continuous blocking surface, which can collect the splashed glue on the outer wall of the glue-blocking roller 420, and prevent the glue from accumulating in a certain part of the glue-blocking roller 420.

[0067] In this embodiment, the gap between the glue-blocking roller 420 and the glue-spreading roller 200 is in the range of 5 to 10 mm, and the gap between the glue-blocking roller 420 and the glue-spreading roller 300 is in the range of 12 to 20 mm.

[0068] For example, the gap between the glue-blocking roller 420 and the glue-spreading roller 200 can be 5mm, 8mm, 10mm, etc., and the gap between the glue-blocking roller 420 and the glue-applying roller 300 can be 12mm, 15mm, 20mm, etc. Because the glue-spreading roller 200 is coated with glue first, and then the glue is transferred to the glue-applying roller 300, the glue-spreading roller 200 has a larger amount of glue. Therefore, the glue-blocking roller 420 is set to be closer to the glue-spreading roller 200, which makes it easier to collect the glue splashed off the glue-spreading roller 200. At the same time, it can also collect the glue splashed off the glue-applying roller 300. That is, the roller surface of the glue-blocking roller 420 faces both the glue-spreading roller 200 and the glue-applying roller 300 at the same time and collects the glue.

[0069] Further, please see Figure 1 and Figure 3 The glue-blocking mechanism 400 also includes a glue-blocking scraper 430, which is fixedly disposed on one side of the glue-blocking roller 420 along the axial direction of the glue-blocking roller 420, and one side edge of the glue-blocking scraper 430 abuts against the roller surface of the glue-blocking roller 420.

[0070] More preferably, the glue-blocking mechanism 400 further includes a scraper mounting rod 440, which is fixedly mounted on the device bracket 100 on the side of the glue-blocking roller 420 away from the roller surface contact portion. A glue-blocking scraper 430 is detachably mounted on the scraper mounting rod 440, and the scraper mounting rod 440 is arranged parallel to and spaced apart from the glue-blocking roller 420. Furthermore, a metal scraper strip 431 is provided on the side of the glue-blocking scraper 430 near the glue-blocking roller 420. The length of the metal scraper strip 431 is equal to or greater than the length of the glue-blocking roller 420, and the metal scraper strip 431 abuts against the glue-blocking roller 420 along the tangential direction of the roller surface.

[0071] The glue-blocking scraper 430 can be fixed to the scraper mounting rod 440 by bolts, clips, or other detachable means. The metal scraper 431 cleans the glue on the roller surface of the glue-blocking roller 420. When there is a lot of glue accumulated on the metal scraper 431, only the glue-blocking scraper 430 can be removed for cleaning without adjusting or treating the glue-blocking roller 420. The glue-spreading roller 200 and the glue-applying roller 300 will work normally, that is, there is no need to stop the device. The cleaning method is simple and will not affect the glue application operation of the device. After cleaning the glue on the metal scraper 431, the glue-blocking scraper 430 can be reinstalled on the scraper mounting rod 440.

[0072] More specifically, the material of the metal scraper 431 is not limited, and it can be made of materials such as aluminum alloy, stainless steel, or copper. The length of the metal scraper 431 is equal to or greater than the length of the rubber blocking roller 420. For example, the length of the metal scraper 431 can be the same as the length of the rubber blocking roller 420, or the length of the metal scraper 431 can be greater than the length of the rubber blocking roller 420 by 5mm, 10mm, 20mm or other dimensions. This embodiment does not make specific limitations in this regard.

[0073] The design of this application features a scraper 430 with one edge abutting against the surface of the glue-blocking roller 420. This edge of the scraper 430 can scrape off the glue collected on the glue-blocking roller 420, preventing glue accumulation and curing. Cleaning can then be performed on only the scraper 430, which is simpler and more convenient than cleaning the entire roller 420. Furthermore, the metal scraper 431 abuts against the glue-blocking roller 420 along the tangential direction of its surface, enabling comprehensive scraping of the entire roller surface. The metal scraper 431 improves the scraper's lifespan and ensures the cleanliness of the glue-blocking roller 420's surface.

[0074] In the gluing device of the bag making equipment disclosed in this embodiment, the gluing roller 200 and the glue-blocking roller 420 can rotate synchronously relative to the device support 100, and the gluing roller 300 is rotatably disposed on the device support 100 and is connected to the packaging bag conveying component of the bag making equipment.

[0075] Specifically, in this embodiment, the applying roller 200 and the blocking roller 420 can be driven by various driving mechanisms and rotate synchronously relative to the device support 100. For example, the applying roller 200 and the blocking roller 420 can be connected by a drive motor driving a transmission gear set, a synchronous belt assembly, a transmission chain set, etc. For example, gears can be provided at the ends of the applying roller 200 and the blocking roller 420, and a gear transmission set can be formed by the meshing of two adjacent gears, and the drive motor drives the gear transmission set to rotate. Alternatively, the applying roller 200, the coating roller 300, and the blocking roller 420 can also be driven by separate drive units.

[0076] Furthermore, the coating roller 300 can be connected to the packaging bag conveying component by means of transmission gears, transmission chains, transmission belts or other methods. For example, when the packaging bag conveying component is set as a rotatable hub component, the coating roller 300 can be driven by the transmission gear meshing with the gear on the hub component. Those skilled in the art can design and adjust according to actual needs, and this embodiment does not make specific limitations in this regard.

[0077] Please see Figure 1 and Figure 2In one embodiment, a drive mechanism is provided on the device support 100. The drive mechanism includes a drive motor 500 and a transmission chain assembly 510. The transmission chain assembly 510 includes sprockets 511 and transmission chains 512. Sprockets 511 are respectively provided on the same side end of the glue-spreading roller 200 and the glue-blocking roller 420. The transmission chains 512 extend around each sprocket 511. The drive motor 500 is connected to the end of the glue-spreading roller 200 for transmission.

[0078] In this embodiment, the drive motor 500 drives the uniform glue roller 200 to rotate, and the uniform glue roller 200 drives the sprocket 511 located at its end to rotate. The sprocket 511 located at the end of the uniform glue roller 200 drives the transmission chain 512 to drive the transmission, and then the transmission chain 512 drives the sprocket 511 at the end of the glue-blocking roller 420 to rotate, thereby driving the glue-blocking roller 420 to rotate.

[0079] This design utilizes a drive motor 500 to drive the transmission chain 510, causing the spreading roller 200 and the blocking roller 420 to rotate synchronously. The coating roller 300 is connected to the bag conveying component of the bag-making equipment. During the coating process, the spreading roller 200 evenly applies the glue to its surface, and the coating roller 300 accurately transfers the glue from the spreading roller 200 to the bottom of the packaging bag. The blocking roller 420 effectively prevents any glue from being splashed out. The three rollers work together seamlessly, resulting in better synchronization. Furthermore, the connection between the coating roller 300 and the bag conveying component ensures that the coating roller 300 accurately transfers and coats the glue to the corresponding coating position on each packaging bag.

[0080] Furthermore, the device support 100 includes a support body (not shown in the figure), and a first support 110 and a second support 120 disposed on the support body and separable from each other. Please refer to [link to relevant documentation]. Figure 2 The glue-spreading roller 200 and the glue-blocking roller are rotatably mounted on the first support 110, and the glue-applying roller 300 is rotatably mounted on the second support 120.

[0081] A separation mechanism is provided on one side of the first bracket 110. The separation mechanism includes a separation drive cylinder (not shown in the figure) fixed on the bracket body and a separation swing arm 130. One end of the separation swing arm 130 is connected to the output end of the separation drive cylinder, and the other end is rotatably connected to the first bracket 110. The drive cylinder can drive the separation swing arm 130 and link the first bracket 110 to separate or move closer to the second bracket 120.

[0082] Specifically, a guide rail, guide groove, or other guiding structure can be provided between the first support 110 and the second support 120 to assist in the separation of the first support 110 and the second support 120. The separation mechanism is not limited to providing a separation drive cylinder and a separation swing arm 130; the separation drive cylinder can also be a linear motor. Alternatively, the separation mechanism can be a drive motor, and the separation swing arm can be a crank-rocker mechanism. Those skilled in the art can design it according to actual needs, and this embodiment does not impose specific limitations on it.

[0083] It should be noted that the specific structure of the separating swing arm 130 in this embodiment is not limited to having only one swing arm. It can also be a swing arm assembly composed of multiple swing arms or connecting rods, for example, it can be a separating swing arm composed of two or other numbers of connecting rods. When the output end of the separating drive cylinder drives the first bracket 110 to separate from the second bracket 120, the output end of the separating drive cylinder drives the separating swing arm 130 to swing and link the first bracket 110 and the second bracket 120 to separate from each other. When the output end of the separating drive cylinder drives the first bracket 110 and the second bracket 120 to move closer, the output end of the separating drive cylinder drives the separating swing arm 130 to swing and link the first bracket 110 and the second bracket 120 to move closer to each other.

[0084] Furthermore, the separation dimensions of the first support 110 and the second support 120 can be limited according to requirements, but it is necessary to ensure that the glue-spreading roller 200 and the glue-applying roller 300 are in a separated state to avoid the glue-applying roller 200 and the glue-applying roller 300 coming into contact with the glue when the first support 110 and the second support 120 are in a separated state.

[0085] With this structural design, for example, when the bag-making equipment needs to be stopped for inspection or specification change, the separation drive cylinder can drive the separation swing arm 130 and link the first support 110 and the second support 120 to separate. That is, at this time, the roller surface contact parts of the even-spreading roller 200 and the glue-coating roller 300 are separated. The even-spreading roller 200 continues to rotate to prevent the glue in the even-spreading roller 200 and the glue storage component from drying and solidifying. The separation of the glue-coating roller 300 and the even-spreading roller 200 can prevent the even-spreading roller 200 from applying glue to the glue-coating roller 300, and prevent the glue-coating roller 300 from applying glue in the non-working state. When the bag-making equipment resumes work, the separation drive cylinder drives the separation swing arm 130 and links the first support 110 and the second support 120 to approach each other. The roller surface contact parts of the even-spreading roller 200 and the glue-coating roller 300 contact each other, and the glue-coating roller 300 applies glue to the packaging bag.

[0086] In this embodiment, since the glue-spreading roller 200 and the glue-blocking roller are rotatably mounted on the first support 110, when the first support 110 is separated from the second support 120, the glue-blocking roller 420 and the glue-spreading roller 200 rotate synchronously and collect and block the glue splashed out on the glue-spreading roller 200.

[0087] The embodiments of this application also disclose a coating device for a bag making equipment. A flexible coating pad (not shown in the figure) is provided on the coating roller 300. The top surface of each flexible coating pad protrudes from the roller surface of the coating roller 300 and abuts against the roller surface of the uniform coating roller 200. The flexible coating pad can be fixed on the coating roller 300 by adhesive bonding.

[0088] For details, please see Figure 1 and Figure 2 The coating roller 300 is provided with a plurality of grooves 310 extending circumferentially along the coating roller 300 at intervals. The plurality of grooves 310 on the coating roller 300 can play a role in assisting the positioning of the flexible coating pad. The plurality of grooves 310 on the coating roller 300 are similar to scale grooves to facilitate the precise bonding and fixing of the flexible coating pad on the coating roller 300.

[0089] Furthermore, when a flexible coating pad is provided on the coating roller 300, a certain gap can also be provided between the leveling roller 200 and the coating roller 300. For example, the gap can be 1mm, 2mm, etc., but it needs to be set so that the gap size is smaller than the thickness of the flexible coating pad, so as to ensure that the glue on the leveling roller 200 can be transferred to the flexible coating pad of the coating roller 300. Those skilled in the art can adjust or design according to actual needs, and this embodiment does not make specific limitations in this regard.

[0090] Specifically, in this embodiment, the number, area, and material of the flexible adhesive pads are not limited and can be designed or adjusted according to needs. For example, the number and area of ​​the flexible adhesive pads can be adjusted according to the size of the packaging bag and the area to be coated. For example, one, two, three, or even more flexible adhesive pads can be set. The area of ​​each flexible adhesive pad can be the same or different. The material of the flexible adhesive pads can be sponge, silicone, rubber, etc. Preferably, the flexible adhesive pads can be set as sponge pads, as sponge pads have a better ability to absorb adhesive.

[0091] It should be noted that after a flexible coating pad is set on the roller surface of the coating roller 300, the area where the flexible coating pad and the leveling roller 200 contact when the coating roller 300 rotates is the roller surface contact part.

[0092] Furthermore, the number and spacing of the grooves 310 provided on the coating roller 300 can be designed and adjusted according to requirements, and this embodiment does not impose specific limitations on this.

[0093] With this design, the flexible coating pad protrudes from the surface of the coating roller 300 and abuts against the leveling roller 200. During rotation, it transfers the adhesive from the leveling roller 200 to its own surface. Furthermore, the amount of adhesive applied can be controlled or adjusted by changing the thickness and volume of the flexible coating pad. The flexible nature of the pad also acts as a buffer during contact and separation from the leveling roller 200, reducing adhesive splashing and preventing excessive adhesive from being ejected.

[0094] This embodiment also discloses a glue-coating device for a bag-making apparatus. Please refer to [link / reference]. Figure 1 and Figure 4 A glue storage assembly 600 is provided on the side of the glue spreading roller 200 away from the glue coating roller 300. The glue storage assembly 600 includes a glue storage plate 610 and glue-blocking blocks 620 on both sides of the glue storage plate 610. The glue storage plate 610 is fixedly installed on the side of the glue spreading roller 200 away from the glue coating roller 300 by a mounting shaft, and the glue storage plate 610 extends at an angle relative to the glue spreading roller 200. The two ends of the mounting shaft are detachably connected to the device bracket 100 by bolts.

[0095] Specifically, the tilt angle of the glue storage plate 610 relative to the glue spreading roller 200 is not limited. For example, the tilt angle can be 10°, 15°, 30°, 45°, etc. Those skilled in the art can also adjust it according to the amount and viscosity of the glue stored.

[0096] Each glue-blocking block 620 extends between the glue storage plate 610 and the glue-spreading roller 200, and one end of each glue-blocking block 620 near the glue storage plate 610 abuts against the glue storage plate 610, and the other end of each glue-blocking block 620 has an arc-shaped abutting portion adapted to abut against the roller surface of the glue-spreading roller 200.

[0097] Please see Figure 4 The area where the glue storage plate 610, the glue spreading roller 200 and the two glue blocking blocks 620 meet forms a glue storage cavity 630, in which glue is stored.

[0098] With this structural design, the area where the glue storage plate 610, the glue spreading roller 200, and the two glue blocking blocks 620 meet forms a glue storage cavity 630, which can conveniently store glue. There is no need to set up an additional glue storage or glue conveying mechanism on one side of the glue spreading roller 200, making the structure simpler and more compact. The glue in the glue storage cavity 630 is in contact with the outer wall of the glue spreading roller 200, and the glue spreading roller 200 can coat the glue in the glue storage cavity 630 onto the roller wall during rotation.

[0099] The embodiments of this invention also disclose a bag making device, including a gluing device of any of the above-mentioned bag making devices. A rotatable packaging bag conveying component (not shown in the figure) is provided on the side of the gluing roller 300 away from the evenly applying roller 200. The packaging bag conveying component can be a conveying roller, a conveying wheel, etc., for conveying packaging bags. The gluing roller 300 can rotate relative to the packaging bag conveying component, and the gluing roller 300 applies glue to each packaging bag conveyed on the packaging bag conveying component.

[0100] Specifically, in this embodiment, a flexible coating pad is provided on the coating roller 300. The flexible coating pad contacts the coating roller 200 and then applies glue. The packaging bag conveying component conveys each packaging bag to the coating area. The flexible coating pad contacts the packaging bag, for example, it can contact the bottom of the packaging bag. Then, glue is applied to the bottom area of ​​the packaging bag. The packaging bag conveying component continues to convey the packaging bag and performs a bottom sealing operation on the packaging bag.

[0101] It should be noted that, in another embodiment, the adhesive-blocking mechanism 400 can be configured to include a movable adhesive-blocking plate. The adhesive-blocking mechanism with this structure will be described in detail below:

[0102] In another embodiment of the bag-making equipment's coating apparatus, the glue-blocking mechanism 400 includes a glue-blocking plate and a glue-scraping strip disposed on one side of the glue-blocking plate. The glue-blocking plate is mounted on the device support 100 parallel to the axial direction of the glue-spreading roller 200. The side of the glue-blocking plate facing the roller surface contact portion serves as a glue-blocking part 410, which faces the roller surface contact portion in the rotation direction of the glue-spreading roller 200. The glue-blocking plate can reciprocate relative to the device support 100 along the plate surface extension direction. Furthermore, one edge of the glue-scraping strip abuts against one side of the glue-blocking plate. It should be noted that the plate surface extension direction of the glue-blocking plate is an inclined or extending direction relative to the axial direction.

[0103] Specifically, the specific structure of the glue baffle is not limited and can be set as a planar shape, an arc shape, etc. In this embodiment, the glue baffle is preferably set as a square flat plate. The glue baffle is set on one side of the glue spreading roller 200 and the glue coating roller 300, and the side plane of the glue baffle facing the roller surface contact part is the glue baffle part 410.

[0104] Furthermore, the connection and driving method of the baffle plate on the device bracket 100 are not limited. For example, the baffle plate can be slidably installed on the device bracket 100 by a slider, slide rail, etc., and the baffle plate can be driven by a drive cylinder, linear motor, etc.

[0105] This structural design incorporates a baffle plate that can reciprocate along the extension direction of the board surface, increasing the baffle area. The movable surface of the baffle plate prevents the splashed glue from concentrating in a specific area, thus preventing glue buildup. A scraper strip can promptly remove glue from the baffle plate surface, preventing it from hardening.

[0106] In summary, this utility model discloses a gluing device for bag making equipment and bag making equipment. The gluing device includes a uniform gluing roller 200 and a coating roller 300 rotatably mounted on a device support 100. The uniform gluing roller 200 evenly applies glue to its own roller surface, and the coating roller 300 accurately transfers the glue on the uniform gluing roller 200 to the bottom of the packaging bag. A glue-blocking mechanism 400 is provided downstream of the uniform gluing roller 200 and the coating roller 300 during rotation. The glue-blocking part 410 of the glue-blocking mechanism 400 can move relative to the roller surface contact part of the uniform gluing roller 200 and the coating roller 300, which can evenly collect the splashed glue on the glue-blocking part 410, preventing the splashed glue from concentrating in a certain part of the glue-blocking part 410, preventing glue accumulation and solidification, and avoiding glue splashing inside the equipment or on the packaging bag, thereby improving the cleanliness of the gluing device when applying glue to the packaging bag.

[0107] Finally, the working process of the glue coating device of the bag making equipment disclosed in this application will be briefly described:

[0108] Please see Figure 1 The drive motor 500 drives the glue-spreading roller 200 to rotate relative to the device support 100. When the glue-spreading roller 200 rotates, it can coat the glue in the glue storage chamber 630 onto the roller wall. The glue-applying roller 300 also rotates relative to the device support 100, and the flexible glue-applying pad on the glue-spreading roller 300 contacts the glue-spreading roller 200, so that the glue is evenly coated on the top surface of each flexible glue-applying pad. The packaging bag conveying component conveys each packaging bag to the glue-applying area, and the flexible glue-applying pad contacts the packaging bag. For example, the glue can be applied to the bottom area of ​​the packaging bag. Then the packaging bag conveying component continues to convey the packaging bag and performs the bottom sealing operation on the packaging bag. The glue-blocking roller 420 on one side of the glue-spreading roller 200 and the glue-applying roller 300 is driven to rotate by the transmission chain 512. The glue splashed out by the glue-spreading roller 200 and the glue-applying roller 300 is blocked by the glue-blocking roller 420. The rotating glue-blocking roller 420 can prevent the splashed glue from concentrating in a certain part of the glue-blocking roller 420, thus preventing the glue from accumulating and solidifying. In addition, a glue-blocking scraper 430 is also provided on one side of the glue-blocking roller 420. The glue-blocking scraper 430 can clean the glue on the roller surface of the glue-blocking roller 420. The structure is simple and easy to clean.

[0109] It should be noted that, in addition to the specific embodiments described above, those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model is presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to that embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this utility model. In order to provide a deep understanding of this utility model, many specific details are included in the above description, and this utility model may also be implemented without using these details. In addition, in order to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0110] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0111] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing the 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 the utility model.

[0112] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0113] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0114] Although the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the present invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the present invention to these descriptions. Those skilled in the art can make various changes in form and detail, including some simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A gluing device of a bag making apparatus, characterized by comprising: The device includes a support frame, and further includes a leveling roller and a coating roller rotatably mounted on the support frame; wherein The leveling roller and the coating roller are arranged side by side on the device support and can rotate in opposite directions; wherein the roller surfaces of the leveling roller and the coating roller are at least partially in contact; and A glue-blocking mechanism is also provided on the downstream side of the rotating surface of the leveling roller and the coating roller. The glue-blocking mechanism includes a glue-blocking part disposed on the device support. The glue-blocking part is directed toward the roller surface contact part between the leveling roller and the coating roller in the rotation direction of the leveling roller and can move relative to the roller surface contact part.

2. The gluing device of the bag making apparatus as claimed in claim 1, wherein The glue-blocking mechanism includes a glue-blocking roller that is parallel to and rotatably mounted on the device support, and the roller surface of the glue-blocking roller, as the glue-blocking part, is in contact with the roller surface in the rotation direction of the glue-spreading roller.

3. The gluing device of the bag manufacturing apparatus according to claim 2, wherein The glue-blocking mechanism further includes a glue-blocking scraper, which is fixedly disposed on one side of the glue-blocking roller along the axial direction of the glue-blocking roller, and one side edge of the glue-blocking scraper abuts against the roller surface of the glue-blocking roller.

4. The gluing device of the bag manufacturing apparatus according to claim 3, wherein The adhesive blocking mechanism further includes a scraper mounting rod, which is fixedly mounted on the device bracket and located on the side of the adhesive blocking roller away from the roller surface contact portion. The adhesive blocking scraper is detachably mounted on the scraper mounting rod, and the scraper mounting rod is arranged parallel to and spaced apart from the adhesive blocking roller. A metal scraper is also provided on the side of the glue-blocking scraper near the glue-blocking roller. The length of the metal scraper is equal to or greater than the length of the glue-blocking roller, and the metal scraper abuts against the glue-blocking roller along the tangent direction of the roller surface.

5. The gluing device of the bag manufacturing apparatus according to claim 4, wherein The gap between the glue-blocking roller and the glue-spreading roller is in the range of 5 to 10 mm, and the gap between the glue-blocking roller and the glue-spreading roller is in the range of 12 to 20 mm.

6. The gluing device of the bag manufacturing apparatus according to claim 2, wherein in The dispensing roller and the blocking roller can rotate synchronously relative to the device support, and the coating roller is rotatably mounted on the device support and is connected to the packaging bag conveying component of the bag making equipment; wherein The device support is provided with a drive mechanism, which includes a drive motor and a transmission chain assembly. The transmission chain assembly includes sprockets respectively disposed at the same end of the glue-spreading roller and the glue-blocking roller, and a transmission chain extending around each sprocket. The drive motor is connected to the end of the glue-spreading roller.

7. The gluing device of the bag manufacturing apparatus according to claim 6, wherein The device support includes a first support and a second support that are separable from each other, disposed on the support body; wherein The dispensing roller and the blocking roller are rotatably mounted on the first support, and the coating roller is rotatably mounted on the second support; and A separation mechanism is provided on one side of the first bracket. The separation mechanism includes a separation drive cylinder fixed to the bracket body and a separation swing arm. One end of the separation swing arm is connected to the output end of the separation drive cylinder, and the other end is rotatably connected to the first bracket. The drive cylinder can drive the separation swing arm and link the first bracket to separate from or move closer to the second bracket.

8. The gluing device of the bag manufacturing apparatus according to claim 1, wherein The adhesive blocking mechanism includes an adhesive blocking plate and an adhesive scraper strip disposed on one side of the adhesive blocking plate; wherein The glue blocking plate is arranged on the device support in axial parallel with the glue distributing roller, a side plate surface of the glue blocking plate as the glue blocking part faces the roller surface contact part in the rotating direction of the glue distributing roller; and the glue blocking plate is reciprocally movable along the plate surface extension direction relative to the device support; and One side edge of the glue scraping strip abuts against the side plate surface of the glue blocking plate.

9. The gluing device of the bag manufacturing apparatus according to claim 1, wherein The glue coating roller is provided with flexible glue coating pads, and a top surface of each flexible glue coating pad protrudes from the roller surface of the glue coating roller and abuts against the roller surface of the glue distributing roller.

10. The gluing device of the bag manufacturing apparatus according to any one of claims 1 to 9, wherein The side part of the glue distributing roller away from the glue coating roller is provided with a glue storage assembly, and the glue storage assembly comprises a glue storage plate and glue blocking blocks on both sides of the glue storage plate; wherein The glue storage plate is fixedly installed on the side of the glue distributing roller away from the glue coating roller by a mounting shaft and extends obliquely relative to the glue distributing roller; and Each glue blocking block extends between the glue storage plate and the glue distributing roller, and one end of each glue blocking block close to the glue storage plate abuts against the glue storage plate, and the other end has an arc-shaped abutting part adapted to abut against the roller surface of the glue distributing roller; wherein The glue storage plate, the glue distributing roller and the region where the two glue blocking blocks meet form a glue storage cavity, and glue is stored in the glue storage cavity.

11. A bag making apparatus characterized by comprising: The glue coating device comprises the bag making equipment according to any one of claims 1-10; wherein The side of the glue coating roller away from the glue distributing roller is provided with a rotatable packaging bag conveying component, the packaging bag conveying component is used for conveying packaging bags, and the glue coating roller is rotatable relative to the packaging bag conveying component and can coat glue on each packaging bag conveyed on the packaging bag conveying component.

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