Bag making device for making bag through single-piece handle sticker

Abstract

The utility model discloses a bag making device for making a bag with single handle stickers, which comprises a feeding and unwinding mechanism, a handle making mechanism and the like, and the handle making mechanism comprises a handle unwinding frame, a sticker unwinding frame and a handle making rack table. The handle shaping mechanism is installed on a handle manufacturing rack table, the hot melt adhesive basin is located below the conveying direction of a handle round rope, the hot melt adhesive gluing wheel piece is soaked in hot melt adhesive in the hot melt adhesive basin, and the single-piece handle sticker conveying wheel conveys output single-piece handle stickers to be tightly attached to the bottom of the handle round rope. The handle pressing wheel sets and the handle cutting knife are used for pressing the handle round rope and the single handle sticker after the handle round rope and the single handle sticker are pasted. According to the bag making device, the production cost of the round rope handle take-out bag can be reduced, glue, paper scraps and paper scrap production parts can be saved, the use of parts for handle production is reduced, and the structure is simplified.

Description

Technical Field

[0001] This utility model relates to the technical field of a production equipment for takeaway bags with handles, and more particularly to a bag-making device that uses a single handle sticker to tightly attach a handle to the bag body. Background Technology

[0002] Currently, in the takeaway bag industry, the handles of takeaway paper bags are typically made by bonding two pieces of paper together to clamp the handle rope before attaching it to the inside of the bag, forming the paper bag product. For example, Chinese Patent No. 201910683330.8, "A Paper Bag Handle," describes this process. In the bag-making equipment that produces the round rope handle, two handle stickers are used. One sticker is coated with hot melt adhesive and regular glue, and the round rope and sticker are then glued together using hot melt adhesive. The other sticker is then glued together using regular glue, achieving the effect of attaching the handle to the inside of the bag. Specific production equipment and methods can be found in Chinese Patent Nos. 202111192558.0, "A Manufacturing Apparatus and Method for Takeaway Tote Bags," and Chinese Patent No. 202122471407.0, "A Manufacturing Apparatus for Takeaway Tote Bags." However, in practical use, to reduce the use of paper sheets and save production costs for takeout bags, it is necessary to develop a takeout bag product with a single-piece handle sticker. This means the handle could be attached to the bag body with a single sticker, replacing the traditional method of requiring two stickers to be tightly attached. However, traditional bag-making equipment rarely uses automated production lines that automatically attach single-piece handle stickers to the bag body. In most cases, the single-piece handle sticker and the handle rope are manually attached to the bag body after production. This results in low production efficiency, high labor intensity, and high production costs. The reason why there is basically no automatic production equipment in the existing technology that pastes single handle stickers on the bag body is: (1) Since only single handle stickers are bonded to the handle rope, the handle rope is no longer bonded by double-sided stickers; thus, before the handle is conveyed to the bag body for pasting after production, the single handle sticker and handle rope will be pasted by the traditional glue application and pressing method, which will cause hot melt glue to stick to the handle pressure roller (used to press the handle rope and sticker tightly), resulting in glue residue on the handle pressure roller and gradual accumulation. In subsequent production, some stickers will overlap and the handle pressure roller and sticker will be firmly bonded, causing production to be unsmooth and requiring machine shutdown. (2) When the traditional gluing wheel applies glue to the handle rope, the entire continuous surface of the gluing wheel is basically glued to the handle rope. This amount of glue application not only causes a lot of glue waste (the entire handle rope on the side of the handle sticker is glued), but also causes a lot of hot melt glue to overflow, which may lead to product overlap or premature sealing of the bag opening during subsequent bag forming, increasing the defect rate and waste. (3) Since double-layer handle sticker conveying, pasting and gluing are not required, but there is not much change in its structure and parts usage, the number of parts in handle production is large and the structure cannot be simplified, and the production structure and the use of parts cannot be reduced.

[0003] Therefore, existing bag-making equipment still has some issues that need improvement in producing takeaway tote bags with single-piece handle stickers. Summary of the Invention

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a bag-making device for single-piece handle stickers. This bag-making device adopts the structure and production process of the feeding and unwinding mechanism, the inline printing mechanism, the handle pasting mechanism, the paper bag forming mechanism, the paper bag forming part mechanism, and the bag collecting mechanism of Chinese Patent No. 202111192558.0, "A Manufacturing Device and Manufacturing Method for Takeaway Tote Bags". The main change is that the handle making mechanism is changed to a structure of single-piece handle sticker pasting the handle rope to replace the traditional double-sided handle sticker pasting the handle rope equipment structure. This bag-making device for single-piece handle stickers achieves optimal adhesion of the hot melt adhesive and the single-piece handle sticker by modifying the amount and method of hot melt adhesive application, as well as the conveying position and method of the handle rope and the single-piece handle sticker. This avoids excessive hot melt adhesive buildup on the handle pressure roller assembly, reduces the number of parts, and simplifies the structure. This lowers the production cost of the rope handle takeout bag by saving glue, paper, and paper-related components, and by reducing the number of parts used in handle production and simplifying the structure. Finally, a non-stick coating is applied to the surface of the handle pressure roller to prevent hot melt adhesive accumulation, thus ensuring smooth production of the product.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a bag making device for making single-piece handle sticker bags, including a feeding and unwinding mechanism, an inline printing mechanism, a handle making mechanism, a handle bonding mechanism, a paper bag forming mechanism, a paper bag forming part mechanism, and a bag collecting mechanism. The handle making mechanism includes a handle unwinding frame for unwinding the handle rope, a sticker unwinding frame for unwinding the single-piece handle sticker, a handle making machine frame, and a handle shaping mechanism installed on the handle making machine frame to pull and shape the input handle rope into a square wave shape, and a hot melt assembly located below the handle rope conveying direction. The system includes a hot melt adhesive basin, hot melt adhesive application wheels immersed in the hot melt adhesive basin and applied to the bottom of the handle rope, a single handle sticker conveyor wheel located below the hot melt adhesive basin that conveys the output single handle stickers to the bottom of the handle rope, multiple sets of handle pressure rollers that press the handle rope and single handle stickers together after they are pasted, a synchronous conveyor belt connected to the handle shaping mechanism and driving the handle shaping mechanism to convey in the same direction as the handle rope, and a handle cutter located behind the last set of handle pressure rollers that performs a one-in-two longitudinal cut along the conveying direction after the square wavy handle rope and single handle stickers are pasted together.

[0006] Furthermore, the hand-held shaping mechanism includes two sets of symmetrically arranged positioning wheels, a sliding cylinder that drives the positioning wheels to slide back and forth, two synchronous conveyor belts that transport synchronously, and the two sets of positioning wheels are respectively located on the corresponding synchronous conveyor belts, with the hand-held round rope wound around the outer surface of the positioning wheels.

[0007] Furthermore, the handle pressure roller assembly is provided in five sets, including an upper pressure roller located above the handle rope and a lower pressure roller located below the single handle sticker. The upper and lower pressure rollers are arranged symmetrically, and the gap between the upper and lower pressure rollers is less than the thickness of the handle rope and the single handle sticker after they are attached.

[0008] Furthermore, the hot melt adhesive application wheel assembly includes an application shaft, four application single-piece rollers fixedly installed with the application shaft and spaced apart, and two application single-piece rollers are provided on each of the left and right sides of the application shaft.

[0009] Furthermore, the outer surfaces of the upper and lower pressure rollers are coated with a non-stick coating.

[0010] Furthermore, the non-stick coating is a Teflon coating.

[0011] Furthermore, the depth to which the hot melt adhesive roller is immersed in the hot melt adhesive is 1 / 2 to 3 / 4 of the depth of the hot melt adhesive.

[0012] In summary, the bag-making device for single-piece handle stickers of this utility model adopts the structure and production process of the feeding and unwinding mechanism, the inline printing mechanism, the handle pasting mechanism, the paper bag forming mechanism, the paper bag forming part mechanism, and the bag collecting mechanism of the Chinese patent No. 202111192558.0, "A Manufacturing Device and Manufacturing Method for Takeaway Handbags". The main change is that the handle making mechanism is changed to a structure of single-piece handle stickers pasted onto the handle loop to replace the traditional double-sided handle sticker pasting onto the handle loop equipment structure. This bag-making device for single-piece handle stickers achieves optimal adhesion of the hot melt adhesive and the single-piece handle sticker by modifying the amount and method of hot melt adhesive application, as well as the conveying position and method of the handle rope and the single-piece handle sticker. This avoids excessive hot melt adhesive buildup on the handle pressure roller assembly, while simultaneously reducing the number of parts and simplifying the structure. This reduces the production cost of the rope handle takeaway bag by saving glue, paper, and paper-related components, as well as minimizing the use of handle parts and simplifying the structure. Finally, a non-stick coating is applied to the surface of the handle pressure rollers to prevent hot melt adhesive accumulation, ensuring smooth production of the product. Attached Figure Description

[0013] Figure 1 This is a simplified top view schematic diagram of the handrail manufacturing mechanism of Embodiment 1 of this utility model;

[0014] Figure 2 This is a simplified schematic diagram of the working process of the handle-making mechanism according to Embodiment 1 of this utility model; the markings in the attached drawing are as follows: 1. Handle round rope; 2. Single handle sticker; 3. Handle making machine frame; 4. Handle shaping mechanism; 5. Hot melt glue basin; 6. Hot melt glue application wheel; 7. Single handle sticker conveyor wheel; 8. Handle pressure roller group; 9. Synchronous conveyor belt; 10. Handle cutting knife; 11. Positioning wheel; 12. Upper pressure roller; 13. Lower pressure roller; 14. Glue application shaft; 15. Glue application single-piece roller; 16. Sliding cylinder. Detailed Implementation

[0015] Example 1

[0016] The bag-making apparatus for single-piece handle sticker bag making described in Embodiment 1 includes a feeding and unwinding mechanism, an inline printing mechanism, a handle making mechanism, a handle bonding mechanism, a paper bag forming mechanism, a paper bag forming section mechanism, and a bag collecting mechanism. Figure 1 and Figure 2 As shown, the handle-making mechanism includes a handle unwinding frame for unwinding the handle rope 1, a sticker unwinding frame for unwinding single handle stickers 2, a handle-making machine stand 3, and a handle shaping mechanism 4 installed on the handle-making machine stand to pull and shape the input handle rope into a square wave shape, a hot melt adhesive basin 5 located below the handle rope conveying direction and loaded with hot melt adhesive, a hot melt adhesive applicator 6 immersed in the hot melt adhesive basin and applied to the bottom of the handle rope, and a hot melt adhesive applicator wheel located at the hot melt... Below the glue tray, the single-piece handle sticker is conveyed to the single-piece handle sticker conveyor wheel that is close to the bottom of the handle rope. 7. Multiple sets of handle pressure rollers are used to press the handle rope and single-piece handle sticker after they are pasted together. 8. A synchronous conveyor belt is connected to the handle shaping mechanism and drives the handle shaping mechanism to convey the handle rope in the same direction as the handle rope. 9. A handle cutting knife is located behind the last set of handle pressure rollers and performs a one-in-two longitudinal cut along the conveying direction after the square wavy handle rope and single-piece handle sticker are pasted together. The feeding and unwinding mechanism, inline printing mechanism, handle bonding mechanism, paper bag forming mechanism, paper bag forming section mechanism, and bag collecting mechanism of the bag making device for single-piece handle stickers are consistent with the structure and process of the feeding and unwinding mechanism, inline printing mechanism, handle bonding mechanism, paper bag forming mechanism, paper bag forming section mechanism, and bag collecting mechanism in Chinese Patent No. 202111192558.0, "A Manufacturing Device and Manufacturing Method for Takeaway Tote Bags". Therefore, detailed descriptions and records will not be provided here. The improvement of the bag making device in this embodiment 1 lies in the handle making mechanism. The handle making mechanism in this embodiment 1 adopts a structure and method of pressing and bonding a single-piece handle sticker with a handle loop, replacing the existing handle making mechanism suitable for double-sided sticker production, and is better suited for the inline production of single-piece handle stickers and handle loops.

[0017] In this embodiment 1, the handle-making mechanism first outputs the handle rope via a handle unwinding frame and simultaneously outputs individual handle stickers via a sticker unwinding frame. The handle rope is unwound from above, and the individual handle stickers are unwound from below. The handle rope passes through a handle-shaping mechanism and is pulled back and forth to form a square wave shape. After passing above the hot melt adhesive basin, the square wave-shaped handle rope contacts the top of the hot melt adhesive applicator. At this time, hot melt adhesive is applied to the top of the hot melt adhesive applicator and then to the bottom of the handle rope. Simultaneously, the individual handle stickers are conveyed to the handle rope. Below, it is attached to the bottom of the handle loop, at which point the bottom of the handle loop is bonded to the single handle sticker with hot melt adhesive; finally, the bonded handle loop and single handle sticker are pressed tightly by multiple sets of handle pressure rollers to form a tight and flat bond, which is used to make the handle more flat when it is attached to the bag body in subsequent production; after being pressed, the handle loop and single handle sticker are automatically cut in half by the handle cutter to form two handle conveyor paper pieces, which are then cut by the handle bonding mechanism to form a single handle, which can then be attached to the bag body for production line connection.

[0018] In this embodiment 1, the handle shaping mechanism includes two sets of symmetrically arranged positioning wheels 11 and a sliding cylinder 16 that drives the positioning wheels to slide back and forth. Two synchronous conveyor belts are provided and transport the handle synchronously. The two sets of positioning wheels are respectively located on the corresponding synchronous conveyor belts, and the handle rope is wound around the outer surface of the positioning wheels. The sliding cylinder can drive the two facing positioning wheels to slide synchronously in opposite directions, realizing the shaping of the handle rope into a square wave shape and synchronous transport along the synchronous conveyor belt. When the handle rope enters the handle positioning mechanism, it first passes through the sliding cylinder to expand and slide outward to the first pair of positioning wheels to the designated position and then fixes itself to no longer slide. Then it follows the synchronous conveyor belt for transport, thus forming the continuously transported handle rope into a square wave shape. After the handle rope and the single handle sticker are cut in half by the handle cutting knife, the last pair of positioning wheels is driven by the sliding cylinder to retract inward to the designated position. In this way, the handle rope is no longer pulled by this positioning wheel and disengages from the positioning wheel, so it can smoothly enter the next process.

[0019] In this embodiment 1, the handle pressure roller assembly consists of five sets. Each set includes an upper pressure roller 12 located above the handle rope and a lower pressure roller 13 located below the single handle sticker. The upper and lower pressure rollers are symmetrically arranged, and the gap between them is less than the thickness of the handle rope and the single handle sticker after they are bonded together. The upper and lower pressure rollers rotate synchronously. After the handle rope and the single handle sticker are bonded together, they pass through the small gap between the upper and lower pressure rollers and are flattened and pressed firmly. After being pressed by the five sets of pressure rollers, the handle rope and the single handle sticker are flattened multiple times, resulting in a more stable and smoother bond.

[0020] In this embodiment 1, the hot melt adhesive application wheel assembly includes an application shaft 14 and four single-piece application wheels 15 fixedly installed and spaced apart from the application shaft. Two single-piece application wheels are arranged on each side of the application shaft. Traditional adhesive application methods involve spraying or coating adhesive, and the surface of the application wheel is a continuous smooth arc surface, generally the arc surface of a long cylinder. This results in a large amount of adhesive being applied to the handle rope, leading to unnecessary adhesive application, overflow, and wasted adhesive later on. In this embodiment 1, the gluing method involves a hot melt adhesive basin and a hot melt adhesive application wheel. The hot melt adhesive application wheel is a rotating roller. Adhesion is completed by the hot melt adhesive application wheel rotating within the hot melt adhesive basin and by the bottom of the handle rope contacting the hot melt adhesive application wheel. Furthermore, the hot melt adhesive application wheel employs a four-piece single-piece roller structure, enabling spot gluing only on the handle rope, replacing the traditional surface-level gluing method, thus saving both the amount of adhesive applied and the amount of glue. Finally, a scraper can be provided on the side of the single-piece roller to scrape off excess glue adhering to it, controlling the amount of hot melt adhesive applied and preventing excess hot melt adhesive from being wasted. The speed of this hot melt adhesive application wheel is linked to the speed of the handle pressure roller assembly via gears, and its linear speed is consistent with the conveying speed of the single-piece handle sticker, handle rope, etc.

[0021] In this embodiment 1, the outer surfaces of the upper and lower pressure rollers are coated with a non-stick coating. This non-stick coating prevents a large amount of hot melt adhesive from adhering to the surface of the handle pressure roller assembly, ensuring smooth subsequent production and maintaining the cleanliness of the handle.

[0022] In this embodiment 1, the non-stick coating is a Teflon coating. The non-stick coating uses Teflon material, which achieves excellent non-stick properties and is long-lasting and durable.

[0023] In this embodiment 1, the depth to which the hot melt adhesive roller is immersed in the hot melt adhesive is 1 / 2 to 3 / 4 of the depth of the hot melt adhesive.

[0024] In this embodiment 1, the bag-making device for making single-piece handle sticker bags adopts the structure and production process of the feeding and unwinding mechanism, inline printing mechanism, handle pasting mechanism, paper bag forming mechanism, paper bag forming part mechanism, and bag collecting mechanism of Chinese Patent No. 202111192558.0, "A Manufacturing Device and Manufacturing Method for Takeaway Handbags". The main change is that the handle making mechanism is changed to a structure of pasting a single-piece handle sticker onto a handle loop to replace the traditional double-sided handle sticker pasting handle loop equipment structure. This bag-making device for single-piece handle stickers achieves optimal adhesion of the hot melt adhesive and the single-piece handle sticker by modifying the amount and method of hot melt adhesive application, as well as the conveying position and method of the handle rope and the single-piece handle sticker. This avoids excessive hot melt adhesive buildup on the handle pressure roller assembly, reduces the number of parts, and simplifies the structure. This lowers the production cost of the rope handle takeout bag by saving glue, paper, and paper-related components, and by reducing the number of parts used in handle production and simplifying the structure. Finally, a non-stick coating is applied to the surface of the handle pressure roller to prevent hot melt adhesive accumulation, thus ensuring smooth production of the product.

[0025] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the structure of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A single-chip hand-holding sticker bag making device, comprising a feeding unwinding mechanism, an online printing mechanism, a hand-holding making mechanism, a hand-holding sticking mechanism, a paper bag forming mechanism, a paper bag forming part mechanism, and a bag collecting mechanism, characterized in that, The hand pulling production mechanism comprises a hand pulling unwinding frame for unwinding the hand pulling round rope (1), a sticker unwinding frame for unwinding the single hand pulling sticker (2), a hand pulling machine rack table (3), and a hand pulling shaping mechanism (4) installed on the hand pulling machine rack table for shaping the input hand pulling round rope into a square wave shape, a hot melt glue basin (5) located below the hand pulling round rope conveying direction and loaded with hot melt glue, a hot melt glue coating wheel member (6) immersed in the hot melt glue in the hot melt glue basin and coated to the bottom of the hand pulling round rope, a single hand pulling sticker conveying wheel (7) located below the hot melt glue basin and conveying the output single hand pulling sticker to the bottom of the hand pulling round rope, a plurality of hand pulling pressing wheel groups (8) for pressing the hand pulling round rope and the single hand pulling sticker after being pasted, a synchronous conveying belt (9) connected with the hand pulling shaping mechanism and conveying the hand pulling shaping mechanism in the same direction as the hand pulling round rope conveying direction, and a hand pulling cutting knife (10) located behind the last hand pulling pressing wheel group and cutting the square wave-shaped hand pulling round rope and the single hand pulling sticker in a longitudinal direction after being pasted.

2. A bag making apparatus for making bags from a sheet of hand-torn sticker according to claim 1, wherein The hand pulling shaping mechanism comprises two groups of positioning wheels (11) facing each other and being symmetrically arranged, a sliding cylinder (16) for driving the positioning wheels to slide forward and backward, the synchronous conveying belt is provided with two synchronous conveying belts, and the two groups of positioning wheels are respectively arranged on the corresponding synchronous conveying belts, and the hand pulling round rope is wound on the outer side surface of the positioning wheels.

3. A single piece hand-held sticker bag making apparatus as claimed in claim 2 wherein, The hand pulling pressing wheel group is provided with five groups, and the hand pulling pressing wheel group comprises an upper pressing wheel (12) located above the hand pulling round rope and a lower pressing wheel (13) located below the single hand pulling sticker, the upper pressing wheel and the lower pressing wheel are symmetrically arranged in an up-down manner, and the gap distance between the upper pressing wheel and the lower pressing wheel is less than the thickness of the hand pulling round rope and the single hand pulling sticker after being pasted.

4. A bag making apparatus for making bags from a sheet of hand-torn paper according to claim 3, wherein The hot melt glue coating wheel member comprises a coating shaft (14), four coating single rotating wheels (15) fixedly installed on the coating shaft and arranged at intervals, and two coating single rotating wheels are arranged on the left and right sides of the coating shaft.

5. A single piece hand-held sticker bag making apparatus as claimed in claim 4 wherein, The outer surfaces of the upper pressing wheel and the lower pressing wheel are plated with a non-stick coating.

6. A single piece hand-held sticker bag making apparatus as claimed in claim 5 wherein, The non-stick coating is a Teflon coating.

7. A single piece hand-held sticker bag making apparatus as claimed in claim 6 wherein, The depth of the hot melt glue coating wheel member immersed in the hot melt glue is 1 / 2-3 / 4 of the depth of the hot melt glue.

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