Gluing device of bag making machine and paper bag machine

Abstract

The utility model discloses a kind of gluing device and paper bag machine of bag making machine, including rotating component that is installed on frame and inside hollow, and detachable installation is glued component on rotating component outer periphery, glued component is provided with at least one gluing area, each gluing area is provided with at least one point glue head, and the glue inlet end of each point glue head is communicated with the hollow portion of rotating component, and glue outlet end protrudes on the surface of glued component. Since the glued component of this gluing device is detachably connected on the outer periphery of rotating component, when producing different sizes of three-dimensional bag, the gluing position on three-dimensional bag needs to be changed, by replacing glued component, the position of gluing area on glued component can be changed, and the purpose of adapting to different size bag blanks is realized. In this process, rotating component does not need to be disassembled; only glued component needs to be replaced, which has the advantages of convenient replacement and shortening replacement time, and simultaneously reduces the manufacturing cost of bag making machine.

Description

Technical Field

[0001] This utility model belongs to the field of three-dimensional bag forming technology, and in particular relates to a glue coating device for a bag making machine, which can be applied to paper bag machines. Background Technology

[0002] A bag-making machine is a specialized piece of equipment used to produce packaging bags made of materials such as plastic and non-woven fabrics. It is primarily used in the clothing, food, and gift industries to meet packaging needs. For example, a bag-making machine can produce shopping bags, garment bags, food bags, and other similar products.

[0003] In the production of stand-up pouches, existing bag-making machines require the sheet material to be cut into bag blanks one by one by a cutting device. The bag blanks are then conveyed to the creasing device on the paper bag machine for double creasing. The creasing-finished bag blanks are then conveyed to the bottom-opening device for bottom opening. The bottom-opened bag blanks are then conveyed to the gluing device for gluing. Finally, the glued bag blanks are conveyed to the bottom-closing device for bottom closing, thus producing a complete stand-up pouch. The finished stand-up pouches are then conveyed to the packaging device for packaging.

[0004] However, in the production of stand-up pouches using existing bag-making machines, after changing the size of the stand-up pouch, the glue application position of the finished stand-up pouch changes, thus requiring the replacement of the entire glue application device. During the production process, if the size of the stand-up pouch needs to be changed, the replacement of the entire glue application device is inconvenient and time-consuming due to its complex structure, especially the disassembly of the power mechanism. Utility Model Content

[0005] The purpose of this invention is to solve the problem that in the process of producing stand-up pouches, if the size of the stand-up pouch needs to be changed, the entire gluing device needs to be replaced, which is inconvenient and takes too long.

[0006] To solve the above problems, this utility model provides a glue coating device for a bag making machine, including a rotating component that is installed on the machine frame and has a hollow interior, and a glue dispensing component that is detachably installed on the outer periphery of the rotating component.

[0007] The dispensing component is provided with at least one coating area, and each coating area is provided with at least one dispensing head. The glue inlet end of each dispensing head is connected to the hollow part of the rotating component, and the glue outlet end extends out of the surface of the dispensing component. Furthermore, the rotating component rotates relative to the frame, and the coating area of ​​the dispensing component is opposite to the coating area of ​​the bag blank conveyed to the bottom of the rotating component. The dispensing head applies glue to the coating area of ​​the bag blank.

[0008] Using the above technical solution, when the bag making machine is producing three-dimensional bags, the bag blank is conveyed to the bottom of the rotating part. During this process, the rotating part rotates relative to the machine frame. When the bag blank is conveyed to the bottom of the rotating part, the glue application area of ​​the glue dispensing part is aligned with the glue-to-be-coated area of ​​the bag blank conveyed to the bottom of the rotating part. This allows the glue dispensing head to apply glue to the glue-to-be-coated area of ​​the bag blank, thus quickly achieving the glue application work on the bag blank.

[0009] Furthermore, since the glue dispensing component of this coating device is detachably connected to the outer periphery of the rotating component, when producing stand-up pouches of different sizes and needing to change the glue application position on the pouches, the position of the glue application area on the glue dispensing component can be changed by replacing the glue dispensing component, thereby achieving the purpose of adapting to different sized bag blanks. This process does not require disassembling the rotating component; only the glue dispensing component needs to be replaced, which has the advantages of convenient replacement and shortened changeover time, while also reducing the manufacturing cost of the bag-making machine.

[0010] The present invention also discloses a gluing device for a bag making machine, wherein the rotating component includes a hollow sleeve extending perpendicular to the conveying direction of the bag blank and rotatably mounted on the frame at both ends.

[0011] The hollow sleeve has a groove on its outer circumferential surface that corresponds to the dispensing component in the radial direction of the hollow sleeve. The bottom wall of the groove has at least one through-hole to connect the hollow part with the groove. The dispensing component is covered in the groove and detachably connected to the outer circumferential surface of the hollow sleeve. Furthermore, the glue inlet end of each dispensing head extends into the groove and communicates with the groove.

[0012] Using the above technical solution, during the use of this adhesive applicator, when the hollow sleeve rotates relative to the frame, the adhesive inside the hollow sleeve is subjected to centrifugal force and enters the groove through the inlet. When adhesive application is required, the adhesive in the groove is applied to the adhesive area of ​​the bag blank through the dispensing head. During this process, since the dispensing component is covered by the groove, the adhesive in the groove can always be replenished from the hollow part through the inlet, ensuring that adhesive application can be performed every time the dispensing head is aligned with the adhesive area on the bag blank. At the same time, it reduces the risk that the dispensing head will fail to dispense adhesive when the adhesive in the hollow part decreases and the dispensing head cannot communicate with the adhesive.

[0013] The present invention also discloses a gluing device for a bag making machine. The rotating component further includes a pair of arc-shaped blocks fixed at both ends of the hollow sleeve, and the glue dispensing component is configured as an arc-shaped plate adapted to the outer circumferential surface of the hollow sleeve.

[0014] The arc-shaped plate is mounted on the groove and fixed to the outer circumferential surface of the hollow sleeve; and in the axial direction of the hollow sleeve, the two ends of the arc-shaped plate are aligned with the two ends of the hollow sleeve; in the circumferential direction of the hollow sleeve, the two side edges of the arc-shaped plate abut against the corresponding ends of a pair of arc-shaped blocks.

[0015] By adopting the above technical solution, a pair of arc-shaped blocks are set, and the two sides of the arc plate abut against the corresponding ends of the pair of arc-shaped blocks. This allows the arc plate to be limited in the circumferential direction of the rotating roller by the pair of arc-shaped blocks. This avoids the problem of the arc plate being subjected to tangential force and causing positional displacement, as well as gaps at the connection position with the rotating roller, during the long-term rotation of the arc plate driven by the rotating roller. This prevents inaccurate glue application and glue leakage.

[0016] The present invention also discloses a gluing device for a bag making machine, wherein an arc-shaped plate occupies a region of 135° to 180° in the circumferential direction of the hollow sleeve.

[0017] By employing the above technical solution, and limiting the arc-shaped plate to occupy a region of 135°–180° in the circumferential direction of the hollow sleeve, the arc-shaped plate can accurately apply adhesive to the glued areas of the bag preform conveyed below the rotating roller, thus avoiding the problem of uneven adhesive application caused by an excessively large circumferential area occupied by the arc-shaped plate in the hollow sleeve, which would result in an excessively long adhesive application process. It also avoids the problem of the arc-shaped plate applying adhesive to areas of the bag preform that do not need adhesive if the bag preform is not promptly conveyed away from below the rotating component. Furthermore, setting the circumferential area occupied by the arc-shaped plate to less than 135° ensures that every glued area on the bag preform can be glued, avoiding the problem of insufficient adhesive application to every glued area due to an excessively small circumferential dimension of the arc-shaped plate on the rotating roller.

[0018] The present invention also discloses a gluing device for a bag making machine. The gluing head includes a hollow sleeve and a ball bearing disposed at the end of the hollow sleeve away from the hollow sleeve. The hollow sleeve passes through an arc-shaped plate radially along the hollow sleeve. One end of the hollow sleeve is connected to a groove and forms a glue inlet end, while the other end extends out of the outer wall of the arc-shaped plate to form a glue outlet end.

[0019] The ball seat is provided at the dispensing end. The ball seat has an outwardly open ball seat opening. The ball seat and the ball seat opening together define a spherical receiving space. The ball is placed in the spherical receiving space and is limited by the ball seat and the ball seat opening. Furthermore, the diameter of the ball is smaller than the diameter of the spherical receiving space. The ball seat is connected to the groove through a hollow sleeve.

[0020] Using the above technical solution, when the bag making machine is producing three-dimensional bags, during the process of the bag blank being conveyed to the bottom of the hollow sleeve, the hollow sleeve rotates relative to the frame. When the bag blank is conveyed to the bottom of the hollow sleeve, the coating area on the linkage arc plate is opposite to the coating area of ​​the bag blank conveyed to the bottom of the hollow sleeve during the rotation of the hollow sleeve. At this time, the ball bearings come into contact with the coating area of ​​the bag blank, thereby squeezing the ball bearings and causing the ball bearings to move towards the spherical receiving space, so that the glue flows out from the ball seat opening to the coating area on the bag blank. At the same time, the ball bearings roll in the coating area of ​​the bag blank, and the glue continues to flow out, so that the glue covers the coating area. When the hollow sleeve drives the arc plate to rotate until the ball bearings leave the coating area of ​​the bag blank, the ball bearings separate from the coating area of ​​the bag blank. Under the pressure of the glue in the groove, the ball bearings block the ball seat opening, so that the glue does not flow out from the ball seat opening.

[0021] Therefore, this design allows for two main advantages: firstly, the dispensing head can accurately apply adhesive to the area to be coated on the bag blank; secondly, the contact between the ball bearing and the bag blank during the coating process prevents the bag blank from being crushed by the dispensing head; and thirdly, when the ball bearing is not squeezed by the area to be coated on the bag blank, it can quickly seal the ball seat opening under the pressure of the adhesive, thus reducing the risk of adhesive leakage.

[0022] The present invention also discloses a gluing device for a bag making machine, wherein the rotating part further includes a pair of mounting components correspondingly disposed at both ends of the hollow sleeve.

[0023] The frame has mounting openings that correspond one-to-one with a pair of mounting components. Each mounting opening extends along the conveying direction of the bag blank. Each mounting component includes a mounting seat set in the corresponding mounting opening and a bearing whose outer ring is fixedly mounted on the mounting seat.

[0024] Furthermore, both ends of the hollow sleeve pass through the inner ring of their respective bearings and are fixedly connected to the inner ring of the bearings.

[0025] By employing the above technical solution, with both ends of the hollow sleeve passing through and fixedly connected to the inner rings of their respective bearings, the two ends of the hollow sleeve are rotatably connected to their corresponding mounting bases, allowing the hollow sleeve to rotate relative to the frame. Furthermore, by using bearings to achieve this rotatable connection, the frictional resistance during rotation is minimized, reducing the risk of misalignment between the dispensing head and the glued area of ​​the bag blank when the sleeve rotates and the glued area on the arc plate aligns with the glued area of ​​the bag blank conveyed below the sleeve.

[0026] Furthermore, since the dispensing head is pushed against the bag blank during the glue application process, the hollow sleeve will be subjected to a pushing force. By setting the mounting seat inside the installation opening, the hollow sleeve can be limited in the direction of the force, reducing the risk of the mounting seats at both ends of the hollow sleeve shifting during the long-term operation of the hollow sleeve.

[0027] The present invention also discloses a gluing device for a bag making machine, wherein each mounting seat is movable in the corresponding mounting opening along the conveying direction of the bag blank.

[0028] Furthermore, the rotating component also includes a pair of position adjustment components fixedly mounted on the frame and corresponding to a pair of mounting components respectively; wherein, each position adjustment component includes a drive cylinder fixed on the frame, the drive end of the drive cylinder being connected to the corresponding mounting seat in a transmission manner, driving the mounting seat to move within the mounting opening.

[0029] By adopting the above technical solution, the position of the mounting base in the conveying direction of the bag blank can be adjusted by the position adjustment component, so that the hollow sleeve and the glue dispensing component are far away from the glue application position of the bag making machine. This facilitates the maintenance and inspection of the glue dispensing component and the rotating roller, as well as the replacement of the glue dispensing component. In this process, interference between the glue application device and the bag blank located below the hollow sleeve can be avoided, which would cause damage to the bag blank.

[0030] The present invention also discloses a gluing device for a bag making machine. The rotating component further includes a driving component mounted on the frame and a glue inlet joint mounted on one end of the hollow sleeve. The glue inlet joint is connected to the hollow part of the hollow sleeve, and the driving end of the driving component is connected to the other end of the hollow sleeve for driving the hollow sleeve to rotate relative to the frame.

[0031] By adopting the above technical solution, a glue inlet connector is installed at one end of the hollow sleeve, and a drive component is connected to the other end of the hollow sleeve. This allows the hollow sleeve to be driven to rotate by the drive component, and the glue can be fed into the hollow part of the hollow sleeve through an external glue feeding device using the glue inlet connector. This eliminates the need to stop the machine and then feed the glue into the hollow part of the hollow sleeve, thereby improving the working efficiency of the bag making machine.

[0032] The present invention also discloses a gluing device for a bag making machine. A cleaning port is provided on the outer circumferential surface of the hollow sleeve. The cleaning port is connected to the hollow part of the hollow sleeve and is located at a position offset from the arc plate in the circumferential direction of the hollow sleeve. Furthermore, the cleaning port is provided with a detachable plunger, which is used to open or close the cleaning port.

[0033] By adopting the above technical solution, when a cleaning port is set up, the cleaning fluid can be injected into the hollow part of the hollow sleeve through the cleaning port to clean the hollow sleeve. After cleaning, the cleaning port is closed by the plunger. Therefore, by setting up a cleaning port, the hollow part of the hollow sleeve can be easily cleaned.

[0034] This utility model also discloses a paper bag machine, including the glue coating device of the aforementioned bag making machine.

[0035] By employing the above technical solution, this bag-making machine utilizes a gluing device. Since the glue dispensing component of this device is detachably connected to the outer periphery of the rotating component, when producing paper bags of different sizes and requiring a change in the glue application position, the position of the glue application area on the dispensing component can be altered by replacing it, thus adapting to paper bag blanks of different sizes. This process eliminates the need to disassemble the rotating component; only the glue dispensing component needs to be replaced. This offers advantages such as convenient replacement and reduced changeover time, while simultaneously lowering the manufacturing cost of the paper bag machine. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the structural connection of the gluing device of the bag making machine provided in this embodiment of the present utility model when it is installed on the machine frame;

[0037] Figure 2 A schematic diagram of the overall structure of the glue coating device of the bag making machine provided in the embodiment of this utility model from a first perspective;

[0038] Figure 3 A partial structural schematic diagram of the glue coating device of the bag making machine provided in the embodiment of this utility model from a first perspective;

[0039] Figure 4 A schematic diagram of the overall structure of the glue coating device of the bag making machine provided in the embodiment of this utility model from a second perspective;

[0040] Figure 5 This is a schematic diagram of the structural connection of the dispensing head provided in an embodiment of the present utility model;

[0041] Figure 6 This is a partial structural diagram of the dispensing head installed in the adhesive application area according to an embodiment of the present invention.

[0042] Explanation of reference numerals in the attached figures:

[0043] 1. Glue application device;

[0044] 2. Rotating parts;

[0045] 20. Hollow sleeve;

[0046] 200, Groove; 201, Through port; 202, Cleaning port; 203, Plunger;

[0047] 21. Arc-shaped stop;

[0048] 22. Install components;

[0049] 220. Mounting base; 221. Bearing;

[0050] 23. Position adjustment component;

[0051] 230. Drive cylinder; 231. Limit bracket;

[0052] 24. Glue inlet connector;

[0053] 3. Glue dispensing component;

[0054] 30. Glue application area;

[0055] 31. Dispensing head;

[0056] 310. Hollow sleeve; 311. Ball bearing; 312. Ball seat; 313. Ball seat opening;

[0057] 32. Curved plate;

[0058] 4. Rack;

[0059] 40. Install the opening. Detailed Implementation

[0060] As described in the background section, in the production of stand-up pouches, when the size of the stand-up pouch is changed, the glue application position of the finished stand-up pouch changes, thus requiring the replacement of the entire glue application device. However, if the size of the stand-up pouch is to be changed during production, replacing the entire glue application device is inconvenient and time-consuming due to the complex structure of the glue application device, especially the disassembly of the power mechanism.

[0061] To address the aforementioned problems, this utility model provides a gluing device for a bag-making machine, comprising a hollow rotating component mounted on a frame and a detachable glue-dispensing component mounted on the outer periphery of the rotating component. When the bag-making machine produces stand-up pouches of different sizes, and the position of the glue-coated area on the stand-up pouch changes, the position of the glue-coated area on the glue-dispensing component also needs to be changed. Since the glue-dispensing component is detachably mounted on the outer periphery of the rotating component, different types of glue-dispensing components can be replaced, thereby changing the position of the glue-coated area on the glue-dispensing component to adapt to the glue-coated area on the bag blank after the size has been changed. During this process, it is not necessary to disassemble the rotating component; only the glue-dispensing component needs to be replaced. This has the advantages of convenient replacement and shortened replacement time, while also reducing the manufacturing cost of the bag-making machine.

[0062] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0063] like Figure 1 As shown, this embodiment provides a gluing device 1 for a bag making machine, used to apply glue to the glued area 30 of the bag blank during the production of three-dimensional bags.

[0064] Specifically, the coating device 1 of this bag-making machine includes a hollow rotating component 2 mounted on the frame 4 and a detachable dispensing component 3 mounted on the outer periphery of the rotating component 2. The hollow portion of the rotating component 2 stores the adhesive, and the rotating component 2 can rotate relative to the frame 4. The dispensing component 3 applies the adhesive to the coating area 30 of the bag blank. It should be understood that the detachable connection between the dispensing component 3 and the rotating component 2 can be by screwing, riveting, snap-fitting, etc., and this embodiment does not limit this to a specific method.

[0065] More specifically, the dispensing component 3 is provided with at least one coating area 30, and each coating area 30 is provided with at least one dispensing head 31. The glue inlet end of each dispensing head 31 is connected to the hollow part of the rotating component 2, and the glue outlet end extends out of the surface of the dispensing component 3. Furthermore, the rotating component 2 rotates relative to the frame 4, and the coating area 30 of the dispensing component 3 is opposite to the coating area 30 of the bag blank conveyed to the bottom of the rotating component 2. The dispensing head 31 (see Figure 6 The adhesive is applied to the adhesive-coated area 30 of the bag blank. It should be understood that the number of adhesive-coated areas 30 can be one, two, four, etc., and the number of dispensing heads 31 can be one, three, five, etc., which is not limited in this embodiment.

[0066] The working principle of this gluing device 1 is as follows: When the bag making machine is producing three-dimensional bags, the bag blank is conveyed to the bottom of the rotating part 2. During this process, the rotating part 2 rotates relative to the frame 4. When the bag blank is conveyed to the bottom of the rotating part 2, the gluing area 30 of the glue dispensing part 3 is aligned with the gluing area 30 of the bag blank conveyed to the bottom of the rotating part 2. This allows the glue dispensing head 31 to apply glue to the gluing area 30 of the bag blank, thus quickly achieving the gluing work on the bag blank.

[0067] Furthermore, since the dispensing component 3 is detachably mounted on the outer periphery of the rotating component 2, when the bag making machine produces stand-up pouches of different sizes and the position of the glued area 30 on the stand-up pouch changes, the position of the glued area 30 on the dispensing component 3 also needs to be changed. Since the dispensing component 3 is detachably mounted on the outer periphery of the rotating component 2, different types of dispensing components 3 can be replaced, thereby changing the position of the glued area 30 on the dispensing component 3 to adapt to the glued area 30 on the bag blank after the size has been changed.

[0068] In summary, since the glue dispensing component 3 of this glue coating device 1 is detachably connected to the outer periphery of the rotating component 2, when producing stand-up pouches of different sizes and needing to change the glue coating position on the stand-up pouches, the position of the glue coating area 30 on the glue dispensing component 3 can be changed by replacing the glue dispensing component 3, thereby achieving the purpose of adapting to bag blanks of different sizes. During this process, there is no need to disassemble the rotating component 2; only the glue dispensing component 3 needs to be replaced. This has the advantages of convenient replacement and shortened replacement time, while also reducing the manufacturing cost of the bag making machine.

[0069] The structure and arrangement of the rotating component 2 and the dispensing component 3 will be further explained below.

[0070] Alternatively, in one implementation, such as Figure 2 and Figure 3 As shown, the rotating component 2 includes a hollow sleeve extending perpendicular to the conveying direction of the bag blank and rotatably mounted at both ends to the frame 4. It should be noted that the conveying direction can be found in [reference needed]. Figure 1 The label L in the text.

[0071] Specifically, to ensure reliable glue application by the dispensing head 31, a groove 200 corresponding to the glue dispensing component 3 is formed on the outer peripheral surface of the hollow sleeve in a radial direction. At least one through-hole 201 is formed on the bottom wall of the groove 200 to connect the hollow portion to the groove 200. The glue dispensing component 3 is fitted over the groove 200 and detachably connected to the outer peripheral surface of the hollow sleeve. Furthermore, the glue inlet end of each dispensing head 31 extends into and communicates with the groove 200. It should be understood that the number of through-holes 201 can be one, two, three, etc., and this embodiment does not limit this.

[0072] More specifically, during the use of this adhesive applicator 1, when the hollow sleeve 20 rotates relative to the frame 4, the adhesive inside the hollow sleeve 20 enters the groove 200 through the through port 201. When adhesive application is required, the adhesive in the groove 200 is applied to the adhesive area 30 of the bag blank through the dispensing head 31. During this process, since the dispensing component 3 is covered by the groove 200, the adhesive in the groove 200 can always be replenished from the hollow part through the through port 201, ensuring that the dispensing head 31 can apply adhesive every time it is aligned with the adhesive area 30 on the bag blank; and at the same time, reducing the risk that the dispensing head 31 will be unable to dispense adhesive when the adhesive in the hollow part decreases.

[0073] It should be understood that the hollow sleeve 20 is always in a state of rapid rotation. Therefore, when the adhesive enters the groove 200, the adhesive entering the groove 200 will be subject to the centrifugal force of the hollow sleeve 20 during rotation. Thus, even if some of the adhesive in the groove 200 leaks from the through port 201 into the hollow part under the action of gravity of the adhesive during the rotation of the hollow sleeve 20, the adhesive remaining in the groove 200 can still meet the dispensing requirements of the dispensing head 31.

[0074] Furthermore, such as Figure 4 As shown, in one embodiment, to facilitate cleaning of the hollow portion inside the hollow sleeve 20, a cleaning port 202 is provided on the outer circumferential surface of the hollow sleeve. The cleaning port 202 communicates with the hollow portion of the hollow sleeve and is located at a position offset from the arc plate 32 in the circumferential direction of the hollow sleeve, so that the cleaning port 202 and the arc plate 32 will not interfere with each other. Furthermore, the cleaning port 202 is also provided with a detachable plunger 203, which is used to open or close the cleaning port 202.

[0075] Specifically, by setting the cleaning port 202, when it is necessary to clean the hollow part inside the hollow sleeve 20, the plunger 203 can be opened to inject cleaning fluid into the hollow part through the cleaning port 202 to clean the hollow sleeve 20. After cleaning, the cleaning port 202 is closed through the plunger 203. Therefore, by setting the cleaning port 202, the hollow part of the hollow sleeve 20 is easy to clean.

[0076] Furthermore, in one implementation, such as Figures 1-3 As shown, the rotating component 2 also includes a pair of arc-shaped blocks 21 fixed to both ends of the hollow sleeve along the axial direction. The dispensing component 3 is configured as an arc-shaped plate 32 that is adapted to the outer circumferential surface of the hollow sleeve. The arc-shaped plate 32 is covered on the groove 200 and fixed to the outer circumferential surface of the hollow sleeve. This configuration can make the gap between the arc-shaped plate 32 and the hollow sleeve 20 smaller, thereby reducing the risk of glue leakage during the rotation of the hollow sleeve 20.

[0077] Specifically, in the axial direction of the hollow sleeve, the two ends of the arc plate 32 are aligned with the two ends of the hollow sleeve, and in the circumferential direction of the hollow sleeve, the two side edges of the arc plate 32 abut against the corresponding ends of a pair of arc blocks 21. Thus, the arc plate 32 can be limited in the circumferential direction of the rotating roller by the pair of arc blocks 21, avoiding the problem of the arc plate 32 being subjected to tangential force and causing positional displacement during the long-term rotation of the arc plate 32 by the rotating roller, as well as the gap at the connection position with the rotating roller, which would lead to glue leakage.

[0078] Optionally, in one feasible implementation, the arc-shaped plate 32 occupies a region of 135° to 180° in the circumferential direction of the hollow sleeve. It should be understood that the region occupied by the arc-shaped plate 32 in the circumferential direction of the hollow sleeve 20 can be 135°, 150.5°, 180°, etc., and this embodiment does not limit it.

[0079] Specifically, on the one hand, since the area occupied by the arc plate 32 in the circumferential direction of the hollow sleeve 20 does not exceed 180°, the arc plate 32 can accurately apply glue to the glued area 30 of the bag blank conveyed to the bottom of the rotating roller. This avoids the problem of uneven glue application caused by the arc plate 32 occupying too large an area in the circumferential direction of the hollow sleeve 20, which would result in an excessively long glue application process. It also avoids the problem of the arc plate 32 applying glue to areas of the bag blank that do not need glue if the bag blank is not conveyed away from the bottom of the rotating component 2 in time. On the other hand, setting the area occupied by the arc plate 32 in the circumferential direction of the hollow sleeve 20 to be less than 135° ensures that the arc plate 32 can apply glue to every glued area 30 on the bag blank. This avoids the problem of not being able to apply glue to every glued area 30 on the bag blank due to the arc plate 32 being too small in the circumferential direction of the rotating roller.

[0080] Specifically, the structure and setting of the dispensing head 31 are not limited.

[0081] Alternatively, in one feasible implementation, such as Figure 5 and Figure 6 As shown, the dispensing head 31 includes a hollow sleeve 310 and a ball bearing 311 disposed at the end of the hollow sleeve 310 away from the hollow sleeve. The hollow sleeve 310 passes through the arc-shaped plate 32 radially along the hollow sleeve. One end of the hollow sleeve is connected to the groove 200 and forms the glue inlet end, while the other end extends out of the outer wall of the arc-shaped plate 32 to form the glue outlet end. It should be understood that during the glue application process, the ball bearing 311 contacts the bag blank and rolls on the bag blank to apply glue to the glued area 30 of the bag blank, and the bag blank will not be crushed by the dispensing head 31.

[0082] Specifically, the dispensing end is provided with a ball seat 312, which has an outwardly open ball seat opening 313. The ball seat 312 and the ball seat opening 313 together define a spherical receiving space. The ball 311 is disposed in the spherical receiving space and is limited by the ball seat 312 and the ball seat opening 313. Furthermore, the diameter of the ball 311 is smaller than the diameter of the spherical receiving space. The ball seat 312 is connected to the groove 200 through a hollow sleeve 310.

[0083] The dispensing process of this gluing device 1 is as follows: When the bag making machine is producing three-dimensional bags, during the process of the bag blank being conveyed to the bottom of the hollow sleeve 20, the hollow sleeve 20 rotates relative to the frame 4. When the bag blank is conveyed to the bottom of the hollow sleeve 20, during the rotation of the hollow sleeve 20, the gluing area 30 on the linkage arc plate 32 is opposite to the gluing area 30 of the bag blank conveyed to the bottom of the hollow sleeve 20. At this time, the ball bearing 311 contacts the gluing area 30 of the bag blank, and the bag blank squeezes the ball bearing 311, causing the ball bearing 311 to move towards the spherical receiving space, thereby making the ball bearing 311... A gap is created between the ball seat opening 313 and the ball bearing opening 313, allowing the adhesive to flow from the ball seat opening 313 to the coated area 30 on the bag blank. At the same time, the ball bearing 311 rolls in the coated area 30 of the bag blank, and the adhesive continues to flow out, covering the coated area 30. Furthermore, when the hollow sleeve 20 drives the arc plate 32 to rotate until the ball bearing 311 leaves the coated area 30 of the bag blank, the ball bearing 311 separates from the coated area 30 of the bag blank. Under the pressure of the adhesive in the groove 200, the ball bearing 311 blocks the ball seat opening 313 again, preventing the adhesive from flowing out from the ball seat opening 313.

[0084] In summary, by setting up this dispensing head 31, on the one hand, the dispensing head 31 can accurately apply glue to the glued area 30 on the bag blank, and during the glue application process, the bag blank will not be crushed by the dispensing head 31 because the ball bearing 311 contacts the bag blank. On the other hand, when the ball bearing 311 is not squeezed by the glued area 30 of the bag blank during use, the ball bearing 311 can quickly seal the ball seat opening 313 under the pressure of the glue, thus reducing the risk of glue leakage from the dispensing head 31.

[0085] It should be noted that the dispensing head 31 can also be configured in other forms, such as an elastic dispensing head, a telescopic dispensing head, etc., but this embodiment does not limit it to a single form.

[0086] Furthermore, in one implementation, such as Figure 1 and Figure 2 As shown, the rotating component 2 also includes a pair of mounting members 22 corresponding to the two ends of the hollow sleeve; wherein, the frame 4 has mounting openings 40 corresponding to the pair of mounting members 22 one by one, each mounting opening 40 extending along the conveying direction of the bag blank, and each mounting member 22 includes a mounting seat 220 disposed in the corresponding mounting opening 40, and a bearing 221 whose outer ring is fixedly mounted on the mounting seat 220. Furthermore, both ends of the hollow sleeve pass through the inner ring of their respective bearings 221 and are fixedly connected to the inner ring of the bearings 221, thereby enabling the two ends of the hollow sleeve 20 to be rotatably connected to the corresponding mounting seats 220, so that the hollow sleeve 20 can rotate relative to the frame 4.

[0087] Specifically, since the dispensing head 31 is pushed against the bag blank during the glue application process, the hollow sleeve 20 will be subjected to a pushing force. By placing the mounting seat 220 within the mounting opening 40, the hollow sleeve 20 can be limited in the direction of force, reducing the risk of the mounting seats 220 at both ends of the hollow sleeve 20 shifting position during long-term operation. It should be understood that when the mounting seat 220 is placed within the mounting opening 40, both edges of the mounting seat 220 in the bag blank conveying direction are in contact with the inner wall surface of their respective mounting openings 40, thereby limiting the mounting seat 220 in the direction of force and preventing the mounting seat 220 from shifting position in that direction.

[0088] Furthermore, by setting bearings 221 to achieve rotatable connection between the two ends of the hollow sleeve 20 and the corresponding mounting bases 220, the frictional resistance of the hollow sleeve 20 during rotation is reduced, thereby reducing the risk of misalignment between the glue application area 30 on the arc plate 32 and the glue application area 30 of the bag blank conveyed to the bottom of the hollow sleeve 20 when the hollow sleeve 20 rotates.

[0089] Furthermore, in one implementation, such as Figure 1 and Figure 2 As shown, the rotating component 2 also includes a pair of position adjusting components 23 fixedly mounted on the frame 4 and corresponding to a pair of mounting components 22 respectively; wherein each mounting seat 220 is movably disposed in the corresponding mounting opening 40 along the conveying direction of the bag blank.

[0090] Each position adjustment component 23 includes a drive cylinder 230 fixed on the frame 4. The drive end of the drive cylinder 230 is connected to the corresponding mounting base 220 for driving the mounting base 220 to move within the mounting opening 40.

[0091] Specifically, the position of the mounting base 220 in the conveying direction of the bag blank can be adjusted by the position adjustment component 23, so that the hollow sleeve 20 and the glue dispensing component 3 are far away from the glue application position of the bag making machine, which facilitates maintenance, inspection of the glue dispensing component 3 and the rotating roller, and easy replacement of the glue dispensing component 3. In this process, interference with the bag blank located below the hollow sleeve 20 can be avoided, which would cause damage to the bag blank.

[0092] Alternatively, in one feasible implementation, such as Figure 2As shown, each position adjustment component 23 also includes a limiting frame 231 covering the opening end of the mounting opening 40 in the conveying direction of the bag blank. At this time, the drive cylinder 230 can be fixed on the limiting frame. By setting the limiting frame 231, the mounting seat 220 can be limited in the conveying direction of the bag blank, so that when the drive cylinder 230 adjusts the position of the mounting seat 220, the problem of the mounting seat 220 coming out of the mounting opening 40 is avoided.

[0093] Furthermore, in one implementation, such as Figure 2 As shown, the rotating component 2 also includes a drive component mounted on the frame 4 and a glue inlet connector 24 mounted on one end of the hollow sleeve; wherein, the glue inlet connector 24 is connected to the hollow part of the hollow sleeve, and the drive end of the drive component is connected to the other end of the hollow sleeve for driving the hollow sleeve to rotate relative to the frame 4.

[0094] Specifically, the glue inlet connector 24 is installed at one end of the hollow sleeve, and the driving component is connected to the other end of the hollow sleeve 20. This allows the hollow sleeve 20 to be driven to rotate by the driven component, so that the glue can be fed into the hollow part of the hollow sleeve 20 through the glue inlet connector 24 via an external glue feeding device without stopping the machine. This improves the working efficiency of the bag making machine.

[0095] More specifically, the driving component can be configured as a drive motor, etc., but this embodiment does not limit it.

[0096] It should be understood that in order to enable the driving component to inject glue during the rotation of the hollow sleeve 20, a glue inlet connector 24 needs to be rotatably connected to one end of the hollow sleeve 20, and then the glue inlet connector 24 needs to be fixedly connected to the glue inlet of the glue supply device.

[0097] This utility model also provides a paper bag machine, including the glue coating device 1 of the aforementioned bag making machine.

[0098] Specifically, this bag-making machine employs a gluing device 1. Since the glue dispensing component 3 of this gluing device 1 is detachably connected to the outer periphery of the rotating component 2, when producing paper bags of different sizes and needing to change the glue application position, the position of the glue application area 30 on the glue dispensing component 3 can be changed by replacing it, thus achieving the purpose of adapting to paper bag blanks of different sizes. During this process, there is no need to disassemble the rotating component 2; only the glue dispensing component 3 needs to be replaced. This has the advantages of convenient replacement and shortened replacement time, while also reducing the manufacturing cost of the paper bag machine.

[0099] The above description illustrates the implementation of this utility model through specific embodiments. 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 this 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. To provide a deep understanding of this utility model, many specific details are included in the above description. This utility model may also be implemented without using these details. Furthermore, 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, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0100] 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.

[0101] 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.

[0102] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0103] 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.

Claims

1. A glue applicator of a bag making machine, characterized by, It includes a hollow rotating component mounted on a frame, and a detachable dispensing component mounted on the outer periphery of the rotating component; wherein, The dispensing component is provided with at least one coating area, and each coating area is provided with at least one dispensing head. The inlet end of each dispensing head is connected to the hollow portion of the rotating component, and the outlet end extends out of the surface of the dispensing component. The rotating component rotates relative to the frame, and the glue application area of ​​the glue dispensing component is aligned with the glue-coated area of ​​the bag blank conveyed below the rotating component. The dispensing head applies glue to the glue-coated area of ​​the bag blank.

2. The gluing device of a bag making machine according to claim 1, wherein The rotating component includes a hollow sleeve extending perpendicular to the conveying direction of the bag blank, with both ends rotatably mounted to the frame; wherein, The outer circumferential surface of the hollow sleeve is provided with a groove corresponding to the dispensing component in the radial direction of the hollow sleeve, and at least one through-hole is provided on the bottom wall of the groove to connect the hollow part with the groove. The dispensing component is covered by the groove and is detachably connected to the outer circumferential surface of the hollow sleeve. Furthermore, the glue inlet end of each dispensing head extends into the groove and communicates with the groove.

3. The gluing device of the bag making machine according to claim 2, wherein The rotating component further includes a pair of arc-shaped stops fixed to both axial ends of the hollow sleeve, and the dispensing component is configured as an arc-shaped plate adapted to the outer circumferential surface of the hollow sleeve; wherein, The arc-shaped plate is disposed on the groove and fixed to the outer circumferential surface of the hollow sleeve; and... Along the axial direction of the hollow sleeve, the two ends of the arc-shaped plate are aligned with the two ends of the hollow sleeve. In the circumferential direction of the hollow sleeve, the two side edges of the arc-shaped plate abut against the corresponding ends of the pair of arc-shaped blocks.

4. The gluing device of the bag making machine according to claim 3, wherein In the circumferential direction of the hollow sleeve, the arc-shaped plate occupies a region of 135° to 180°.

5. The gluing device of the bag making machine according to claim 3, wherein The dispensing head includes a hollow sleeve and a ball bearing disposed at the end of the hollow sleeve away from the hollow cylinder; wherein, the hollow sleeve penetrates the arc-shaped plate radially along the hollow cylinder, one end of which is close to the hollow cylinder communicating with the groove and forming the glue inlet end, and the other end extending out of the outer wall of the arc-shaped plate to form the glue outlet end; wherein. The dispensing end is provided with a ball seat, which has an outwardly opening. The ball seat and the ball seat opening together define a spherical receiving space. The ball is disposed within the spherical receiving space and is limited by the ball seat and the ball seat opening. The diameter of the ball is smaller than the diameter of the spherical receiving space, and the ball seat is connected to the groove through the hollow sleeve.

6. The gluing device of the bag making machine according to claim 3, wherein The rotating component further includes a pair of mounting members correspondingly disposed at both ends of the hollow sleeve, wherein, The frame has mounting openings corresponding to a pair of mounting components, each mounting opening extending along the conveying direction of the bag blank. Each mounting component includes a mounting seat disposed within the corresponding mounting opening and a bearing whose outer ring is fixedly mounted to the mounting seat. Both ends of the hollow sleeve pass through the inner ring of their respective bearings and are fixedly connected to the inner ring of the bearings.

7. The gluing device of a bag making machine according to claim 6, wherein Each of the mounting seats is movably disposed within the corresponding mounting opening along the conveying direction of the bag blank; and The rotating component further includes a pair of position adjusting components fixedly mounted on the frame and corresponding to the pair of mounting components; wherein... Each of the position adjustment components is fixed to a drive cylinder on the frame, and the drive end of the drive cylinder is connected to the corresponding mounting base for transmission, thereby driving the mounting base to move within the mounting opening.

8. The gluing device of a bag making machine according to any one of claims 3 to 7, characterized in that, The rotating component further includes a drive member mounted on the frame and a glue inlet connector mounted at one end of the hollow sleeve; wherein... The glue inlet connector is connected to the hollow part of the hollow sleeve, and the driving end of the driving component is connected to the other end of the hollow sleeve for driving the hollow sleeve to rotate relative to the frame.

9. The gluing device of a bag making machine according to any one of claims 3 to 7, characterized in that, A cleaning port is also provided on the outer circumferential surface of the hollow sleeve. The cleaning port communicates with the hollow part of the hollow sleeve and is located at a position on the circumference of the hollow sleeve that is offset from the arc-shaped plate. The cleaning port is also equipped with a removable plunger, which is used to open or close the cleaning port.

10. A bagger, characterized in that Includes the glue-applying device of the bag-making machine as described in any one of claims 1-9.

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