Hot melt adhesive transfer coater

Abstract

The utility model discloses a hot melt adhesive transfer coater, include: bag piece conveying subassembly, rotate and press glue subassembly and drive heating assembly, conveying subassembly includes conveying roller, is provided with the guide roller between conveying roller, rotate and press glue subassembly includes upper pressure roller, is provided with the elastic roller between upper pressure roller, drive heating assembly includes heating gum wheel, is provided with the version of receiving glue wheel and gum amount and is scraped board on both sides of heating gum wheel, and heating gum wheel is rotatably connected with drive motor. The utility model, upper pressure roller and elastic roller, can flexibly adjust the height of upper pressure roller and elastic roller, and then to the overglaze engagement size of receiving glue version leather and bag mouth paper thickness and the glue thickness of coating is carried and is limited, the hot melt adhesive in the glue storage tank is heated, and through drive motor and belt drive drive heating gum wheel and version receiving glue wheel synchronous rotation, and then according to product coating requirement covers and pastes high temperature resistant net pattern receiving glue version leather, effectively improves transfer efficiency and yield, reduces production cost.

Description

Technical Field

[0001] This utility model relates to the technical field of hot melt adhesive transfer equipment, specifically to a hot melt adhesive transfer machine. Background Technology

[0002] As a key piece of equipment in the production and processing of flip-top heat-sealable bags, the core function of the hot melt adhesive transfer machine is to pre-coat a uniform layer of hot melt adhesive onto the bag opening. In the actual production process, after the equipment completes the adhesive coating operation at the bag opening, the material can be accurately filled into the bag by the filling machine. Then, the bag opening is flipped and folded. After the folding operation is completed, the adhesive coating area at the bag opening needs to be specifically heated so that the already cured hot melt adhesive reaches the set flow state after being heated. The adhesive coating area is then compacted again by rollers. Through this series of continuous processes, the opening of the flip-top heat-sealable bag is tightly sealed, ensuring the airtightness and storage safety of the material inside the bag.

[0003] The existing hot melt adhesive application process involves purchasing hot melt adhesive tape. This tape is first heated to a certain degree of stickiness and then applied to the opening of the heat-sealable bag. After the hot melt adhesive cools and solidifies naturally to ensure a preliminary bond, the base portion of the tape is manually torn off. This base portion cannot be recycled and must be treated as waste paper, resulting in high labor and material costs. Furthermore, the application position is prone to deviation, making it difficult to control product quality and lowering the yield rate. In addition, the thickness and width of the adhesive application are entirely limited by the ordered dimensions of the purchased hot melt adhesive tape. Therefore, it is impossible to adjust the thickness and width of the adhesive application according to different bag sizes and sealing requirements of different materials during subsequent production, resulting in a severe lack of process flexibility and making it difficult to adapt to diverse production needs. Utility Model Content

[0004] The purpose of this utility model is to provide a hot melt adhesive transfer machine to solve the above problems.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution, including: The bag conveying assembly, mounted on the frame, is used for continuous conveying of bag sheets; The rotating pressing assembly is located above the middle of the bag conveying assembly and is used to rotate and flatten the bag to facilitate the application of hot melt adhesive. A drive heating component is located on one side of the middle of the bag conveying component, and is used to heat and convey hot melt adhesive to be transferred onto the bag sheet; The conveying assembly includes conveying rollers disposed at both ends of the frame, and multiple sets of guide rollers are disposed between the conveying rollers. The ends of the conveying rollers and the guide rollers are mounted on the frame via bearing seats. The rotating pressing assembly includes an upper pressing roller disposed in the middle of the frame, an elastic roller disposed between the upper pressing rollers, and the ends of the upper pressing roller and the elastic roller are mounted on the frame by threaded seats; The driving heating assembly includes a heating gluing roller, a gluing receiving roller is provided on one side of the heating gluing roller, and a glue amount adjusting scraper is provided on the other side of the heating gluing roller. The heating gluing roller is rotatably connected to a drive motor.

[0006] As a further description of the above technical solution, a conveying motor is provided below one end of the conveying roller, and the output end of the conveying motor is rotatably connected to the conveying roller through a synchronous pulley.

[0007] As a further description of the above technical solution, a bag sheet reference support is provided above the conveying roller and the guide roller at the feeding end, and a tensioning roller is provided below the conveying roller and the guide roller at the feeding end.

[0008] As a further description of the above technical solution, the end of the upper pressure roller is threadedly connected to the sliding seat in the threaded seat via a spring screw.

[0009] As a further description of the above technical solution, the end of the elastic roller is threadedly connected to the threaded seat via a spring screw.

[0010] As a further description of the above technical solution, the heating and gluing roller is rotatably connected to the drive motor via a drive shaft, the end of the drive shaft is provided with a driving wheel, the end of the elastic roller is provided with a driven wheel, and the driving wheel and the driven wheel are rotatably connected via a synchronous belt.

[0011] As a further description of the above technical solution, a power receiving disk is provided on the outer side of the driving wheel and the driven wheel, and a brush holder is provided on the outer side of the power receiving disk.

[0012] As a further description of the above technical solution, a glue storage tank is provided below the glue quantity adjusting scraper, and an electric heating plate is provided inside the glue storage tank.

[0013] As a further description of the above technical solution, the adhesive receiving wheel is rotatably connected to the elastic roller, and the outer ring of the adhesive receiving wheel is covered with adhesive receiving plate skin.

[0014] As a further description of the above technical solution, a sensor is provided on the frame inside the upper pressure roller.

[0015] The beneficial effects of this utility model are as follows: 1. The present invention includes a rotating pressure assembly comprising an upper pressure roller disposed in the middle of the frame, an elastic roller disposed between the upper pressure rollers, and the ends of the upper pressure roller and the elastic roller being mounted on the frame via threaded seats. The height of the upper pressure roller and the elastic roller can be flexibly adjusted, thereby lifting and limiting the over-adhesion meshing dimensions of the thickness of the adhesive-coated paper and the bag opening paper and the adhesive coating thickness, and controlling the upper pressure delay parameters. 2. This utility model includes a heating and gluing wheel, a gluing plate receiving wheel on one side of the heating and gluing wheel, and a glue quantity adjusting scraper on the other side of the heating and gluing wheel. The heating and gluing wheel is rotatably connected to a drive motor. The real-time position of the bag sheet is detected by a sensor, and the receiving plate and heating plate are connected through a brush holder to heat the hot melt glue in the glue storage tank. The heating and gluing wheel and the gluing plate receiving wheel are driven to rotate synchronously by the drive motor and belt drive, so that a high-temperature resistant textured gluing plate is applied according to the product gluing requirements. This effectively improves the transfer efficiency and yield, and reduces production costs.

[0016] To more clearly illustrate the structural features and functions of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the hot melt adhesive transfer machine of this utility model. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the hot melt adhesive transfer machine of this utility model. Figure 2 ; Figure 3 yes Figure 2 Enlarged view of point A in the middle; Figure 4 This is a front view of the hot melt adhesive transfer machine of this utility model; Figure 5 yes Figure 4 Enlarged diagram of point B in the middle.

[0018] Figure label: 1. Bag conveying assembly; 101. Conveyor roller; 102. Guide roller; 103. Bearing housing; 104. Conveyor motor; 105. Synchronous pulley; 106. Bag reference support; 107. Tensioning roller; 2. Rotating glue pressing assembly; 201. Upper pressure roller; 202. Elastic roller; 203. Threaded seat; 204. Spring screw; 205. Sliding seat; 3. Drive heating assembly; 301. Heated glue-applying wheel; 302. Glue-receiving wheel; 303. Glue quantity adjusting scraper; 304. Drive motor; 305. Drive shaft; 306. Drive wheel; 307. Driven wheel; 308. Synchronous belt; 309. Power receiving plate; 310. Brush holder; 311. Glue storage tank; 312. Heating plate; 313. Glue-receiving plate cover; 314. Sensor; 4. Bag; 5. Frame. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0020] like Figures 1-5 As shown, in one embodiment, a hot melt adhesive transfer machine includes: a bag conveying assembly 1, a rotating pressing assembly 2, and a driving heating assembly 3; The bag conveying assembly 1 is mounted on the frame 5 to provide a continuous and stable conveying channel for the bag sheets 4, ensuring that the bag sheets 4 can pass through subsequent flattening, positioning, and gluing processes in sequence according to a set rhythm; the rotating gluing assembly 2 is located above the middle of the bag conveying assembly 1 to flatten the bag sheets 4 by rotating and pressing; the driving heating assembly 3 is located on one side of the middle of the bag conveying assembly 1 to heat and convey the hot melt adhesive, and evenly transfer and attach it to the bag opening of the bag sheets 4. For example, the conveying assembly includes conveying rollers 101 disposed at both ends of the frame 5. One end is the infeed conveying roller 101, which receives the glued bag sheet 4; the other end is the discharge conveying roller 101, which sends the glued bag sheet 4 to the cooling stage. Correspondingly, multiple sets of guide rollers 102 are disposed between the conveying rollers 101 to form a flat conveying surface, which can effectively prevent the bag sheet 4 from wrinkling or shifting during the conveying process. In addition, the ends of the conveying rollers 101 and guide rollers 102 are mounted on the frame 5 through bearing seats 103, which can reduce the frictional resistance when the rollers rotate, ensure smooth rotation of the rollers, facilitate subsequent equipment maintenance and component replacement, and ensure long-term stable operation of the conveying assembly.

[0021] Specifically, a conveyor motor 104 is installed below one end of the conveyor roller 101. The output end of the conveyor motor 104 is rotatably connected to the conveyor roller 101 through a synchronous pulley 105, ensuring that the power of the conveyor motor 104 is stably transmitted to the conveyor roller 101, so that the conveyor roller 101 maintains a uniform rotation speed. This allows the conveying speed of the bag sheet 4 to be precisely matched with the subsequent glue application speed and pressing speed, avoiding the displacement of the glue application position at the bag opening due to fluctuations in the conveying speed. This provides a basic guarantee for the glue application accuracy and also facilitates the subsequent adaptation of the conveying speed by adjusting the rotation speed of the conveyor motor 104 according to the glue application requirements of different specifications of bag sheets 4.

[0022] Furthermore, a bag sheet reference support 106 is provided above the conveying roller 101 and guide roller 102 at the feeding end along the conveying direction, which can provide a clear conveying reference for the bag sheet 4, limit the deviation of the bag sheet 4 during the conveying process, and ensure that the bag sheet 4 always enters the subsequent positioning stage in a fixed posture; a tensioning roller 107 is provided below the conveying roller 101 and guide roller 102 at the feeding end, which can keep the conveyor belt in a taut state.

[0023] Please continue reading. Figures 1-5 In this embodiment, the rotating pressing assembly 2 includes an upper pressing roller 201 disposed in the middle of the frame 5, and an elastic roller 202 disposed between the upper pressing rollers 201 to adapt to the pressing requirements of bag sheets 4 of different thicknesses; correspondingly, the ends of the upper pressing rollers 201 and the elastic rollers 202 are mounted on the frame 5 through threaded seats 203 to ensure that the rollers can accurately act on the glue application area at the bag opening of the bag sheet 4.

[0024] Specifically, the end of the upper pressure roller 201 is threadedly connected to the sliding seat 205 within a set of threaded seats 203 via a spring screw 204; correspondingly, the end of the elastic roller 202 is threadedly connected to another set of threaded seats 203 via a spring screw 204. By rotating the spring screw 204 clockwise or counterclockwise, the sliding seat 205 of the upper pressure roller 201 or the elastic roller 202 can be moved up and down along the threaded seats 203, thereby flexibly adjusting the height of the upper pressure roller 201 and the elastic roller 202; this height adjustment function, on the one hand... It can precisely control the glue-coating engagement size (i.e., the contact and bonding size between the bag sheet 4 and the glue-coating plate 313) based on the thickness of the adhesive-coated plate 313, the thickness of the bag opening paper, and the set glue coating thickness, thereby achieving the lifting and limiting of the glue coating area at the bag opening. On the other hand, it can also be combined with the equipment control system to precisely control the time (i.e., the upper pressure delay parameter) for the upper pressure roller 201 and the elastic roller 202 to press the bag sheet 4, ensuring that the glue can fully adhere and press at the bag opening, avoiding leakage or glue overflow due to excessive pressing time.

[0025] Please continue reading. Figures 1-5 In this embodiment, the driving heating assembly 3 includes a heating gluing roller 301. A receiving roller 302 is provided on one side of the heating gluing roller 301 to receive the glue delivered by the heating gluing roller 301. A glue quantity adjusting scraper 303 is provided on the other side of the heating gluing roller 301 to scrape off excess glue from the surface of the heating gluing roller 301 and control the glue thickness. The heating gluing roller 301 is rotatably connected to a driving motor 304, which provides continuous rotational power to the heating gluing roller 301 to ensure that the glue can be stably delivered to the receiving roller 302.

[0026] Specifically, the heating gluing roller 301 is coaxially connected to the output end of the drive motor 304 via the drive shaft 305. A drive wheel 306 is fixedly installed at the end of the drive shaft 305 away from the heating gluing roller 301. A driven wheel 307 is correspondingly installed at one end of the elastic roller 202. The drive wheel 306 and the driven wheel 307 are connected by a synchronous belt 308. This allows the drive motor 304 to drive the heating gluing roller 301 to rotate while simultaneously driving the elastic roller 202 to rotate synchronously via the synchronous belt 308. This ensures that the transfer of adhesive from the heating gluing roller 301 to the adhesive receiving roller 302, the adhesive application and pressing of the adhesive receiving roller 302 with the bag sheet 4, and the auxiliary pressing operation of the elastic roller 202 on the bag sheet 4 are kept synchronous, avoiding problems such as adhesive layering and discontinuous adhesive application due to differences in rotation speed.

[0027] Furthermore, annular electrostatic discharge plates 309 are fixedly installed on the outer sides (the side away from the roller body) of the driving wheel 306 and the driven wheel 307, respectively. The electrostatic discharge plates 309 are connected to the electric heating elements inside the heating gluing wheel 301 and the plate gluing wheel 302 through wires. On the outer side of the electrostatic discharge plates 309, a brush holder 310 is fixedly installed on the frame 5. The conductive brush inside the brush holder 310 (which can be a highly conductive material such as graphite) is in close contact with the annular conductive surface of the electrostatic discharge plates 309, which can realize a continuous and stable power supply to the heating gluing wheel 301 and the plate gluing wheel 302, ensuring the normal operation of their electric heating function. Correspondingly, an upward-opening glue storage tank 311 is provided directly below the glue quantity adjusting scraper 303. The glue storage tank 311 is used to store solid hot melt glue to be heated, and an electric heating plate 312 is fixedly installed on the bottom surface of the inside of the glue storage tank 311. The electric heating plate 312 can provide auxiliary heating for the hot melt glue in the glue storage tank 311 to prevent the glue liquid in the glue storage tank 311 from solidifying due to temperature drop. It works in conjunction with the heating glue roller 301 to maintain the flow state of the glue liquid.

[0028] It should be explained in detail that the adhesive receiving roller 302 is rotatably connected to the elastic roller 202 through a bearing structure. The rotation of the elastic roller 202 can directly drive the adhesive receiving roller 302 to rotate synchronously. A layer of adhesive receiving plate skin 313 is covered on the outer ring surface of the adhesive receiving roller 302. The adhesive receiving plate skin 313 is made of high temperature resistant textured material. The textured structure can evenly absorb and carry the adhesive, and the adhesive receiving plate skin 313 of the corresponding width can be replaced according to the adhesive width requirements of different products. At the same time, a sensor 314 is fixedly installed on the crossbeam of the frame 5 inside the upper pressure roller 201. The sensor 314 can detect the position of the bag sheet 4 in real time during the conveying process, especially the specific position of the upper opening of the bag sheet 4, and transmit the position signal to the equipment control system.

[0029] Understandably, by detecting the real-time position of the bag sheet 4 through the sensor 314, the receiving plate 309 and the heating plate 312 are connected through the brush holder 310, thereby heating the hot melt adhesive in the glue storage tank 311. The heating glue-applying wheel 301 and the adhesive-receiving wheel 302 are driven to rotate synchronously through the drive motor 304 and belt drive, and then the high-temperature resistant mesh adhesive-receiving plate 313 is applied according to the product glue application requirements, which effectively improves the transfer efficiency and yield rate and reduces production costs.

[0030] Working principle: First, turn on the power to preheat the heating roller 301, the adhesive receiving roller 302, and the heating plate 312 under the adhesive storage tank 311. This ensures that each heating component reaches the set constant temperature in advance, preventing the hot melt adhesive from failing to melt due to insufficient temperature after addition. Once the temperature of the heating components stabilizes, solid hot melt adhesive is placed into the adhesive storage tank 311. The solid adhesive gradually melts into a flowing liquid under the dual heating of the heating plate 312 and the heating roller 301. Then, set the constant temperature parameters of each heating component through the equipment control panel. Adjust the hot melt adhesive according to its type to ensure optimal viscosity and flowability. Then, start the drive motor 304 and conveyor motor 104. The drive motor 304 rotates the heating gluing wheel 301, the adhesive receiving wheel 302, and other components, while the conveyor motor 104 drives the conveyor roller 101. Simultaneously, set the operating parameters of the drive motor 304 and conveyor motor 104, including speed and start / stop delay. The flip-top heat-sealing bag sheet 4 enters the active conveyor belt from the feed end and, driven by the active conveyor belt, enters the elastic upper-pressure driven conveyor belt. The pressing action of the upper and lower conveyor belts... Bag piece 4 is flattened to eliminate wrinkles; the flattened bag piece 4 continues to be conveyed, and the bag opening position is accurately identified by the signal from sensor 314; according to the current specifications of the processed bag piece 4, parameters such as the width of bag piece 4, conveying step distance, and conveying speed are set to ensure that the glue application position corresponds precisely to the bag opening; then the lifting limit height of the lower lifting roller is set, the lifting roller starts and lifts the active conveyor belt upward, lifting bag piece 4 upward until the bag opening of bag piece 4 forms a qualified glue application engagement with the glue-receiving plate 313 on the glue-receiving roller 302; at the same time, the lifting roller's upward jump is set. The timing parameters are adjusted according to the conveying speed to ensure that each bag sheet 4 can be precisely engaged; according to the product gluing requirements, a high-temperature resistant mesh gluing plate 313 of the corresponding specification is pre-applied to the gluing plate receiving roller 302; the adhesion between the scraper and the heated gluing roller 301 is adjusted by adjusting the amount of glue, and the required glue thickness is set; the glued bag sheet 4 continues to be conveyed with the conveyor belt and is finally output from the discharge end; during the output process, the fan equipped with the equipment blows air to cool the gluing part of the bag mouth, so that the glue can be cured quickly and avoid glue sticking or shifting during subsequent conveying, thus completing the entire gluing process.

[0031] Through the above technical solution, this application completely solves the problems of high labor costs, serious material waste, large deviation in glue application position, difficulty in quality control, and inflexible adjustment of glue thickness and width in the original glue coating process. By automating the conveying, heating, glue application, and pressing process, the manual operation links are greatly reduced, thus lowering labor costs; there is no need to purchase hot melt adhesive tape, avoiding tape waste and saving material costs; glue application position deviation is effectively eliminated, improving the stability of glue application quality; at the same time, the width, thickness, and positioning accuracy of the transfer glue can be adjusted at any time according to product needs, effectively reducing production costs and meeting the high-quality glue application requirements of flip-top heat-sealed bags.

[0032] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hot melt adhesive transfer machine, characterized in that, include: The bag conveying assembly (1) is mounted on the frame (5) and is used to continuously convey the bag pieces (4). The rotating pressing assembly (2) is located above the middle of the bag conveying assembly (1) and is used to rotate and flatten the bag (4) to cooperate with the application of hot melt adhesive. The driving heating component (3) is located on one side of the middle part of the bag conveying component (1) and is used to heat and convey the hot melt adhesive to be transferred onto the bag (4); The conveying assembly includes conveying rollers (101) arranged at both ends of the frame (5), and multiple sets of guide rollers (102) are arranged between the conveying rollers (101). The ends of the conveying rollers (101) and the guide rollers (102) are mounted on the frame (5) through bearing seats (103). The rotating pressing assembly (2) includes an upper pressing roller (201) disposed in the middle of the frame (5), and an elastic roller (202) disposed between the upper pressing rollers (201). The ends of the upper pressing rollers (201) and the elastic rollers (202) are mounted on the frame (5) through threaded seats (203). The driving heating assembly (3) includes a heating gluing wheel (301), a gluing receiving wheel (302) is provided on one side of the heating gluing wheel (301), and a glue amount adjusting scraper (303) is provided on the other side of the heating gluing wheel (301). The heating gluing wheel (301) is rotatably connected to the driving motor (304).

2. The hot melt adhesive transfer machine according to claim 1, characterized in that, A conveying motor (104) is provided below one end of the conveying roller (101), and the output end of the conveying motor (104) is rotatably connected to the conveying roller (101) through a synchronous pulley (105).

3. The hot melt adhesive transfer machine according to claim 1, characterized in that, A bag sheet reference support (106) is provided above the conveying roller (101) and the guide roller (102) at the feed end, and a tensioning roller (107) is provided below the conveying roller (101) and the guide roller (102) at the feed end.

4. The hot melt adhesive transfer machine according to claim 1, characterized in that, The end of the upper pressure roller (201) is threadedly connected to the sliding seat (205) inside the threaded seat (203) via a spring screw (204).

5. The hot melt adhesive transfer machine according to claim 1, characterized in that, The end of the elastic roller (202) is threadedly connected to the threaded seat (203) via a spring screw (204).

6. The hot melt adhesive transfer machine according to claim 1, characterized in that, The heating and gluing roller (301) is rotatably connected to the drive motor (304) via the drive shaft (305). The end of the drive shaft (305) is provided with a drive wheel (306), and the end of the elastic roller (202) is provided with a driven wheel (307). The drive wheel (306) and the driven wheel (307) are rotatably connected via a synchronous belt (308).

7. The hot melt adhesive transfer machine according to claim 6, characterized in that, A power receiving disk (309) is provided on the outside of the driving wheel (306) and the driven wheel (307), and a brush holder (310) is provided on the outside of the power receiving disk (309).

8. The hot melt adhesive transfer machine according to claim 1, characterized in that, A glue storage tank (311) is provided below the glue quantity adjusting scraper (303), and an electric heating plate (312) is provided inside the glue storage tank (311).

9. The hot melt adhesive transfer machine according to claim 1, characterized in that, The adhesive receiving roller (302) is rotatably connected to the elastic roller (202), and the outer ring of the adhesive receiving roller (302) is covered with adhesive receiving plate skin (313).

10. The hot melt adhesive transfer machine according to claim 1, characterized in that, A sensor (314) is installed on the frame (5) inside the upper pressure roller (201).

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