Diaper core hot melt adhesive spraying device

Abstract

This utility model discloses a hot melt adhesive spraying device for diaper cores, relating to the technical field of spraying devices. When hot melt adhesive passes through a spiral nozzle, some adhesive residue remains and solidifies on the surface of the nozzle, forming a residue layer, which affects the uniformity of hot melt adhesive spraying. This utility model includes a storage tank and a processing mechanism. The processing mechanism is located at the bottom of the storage tank and includes an equipment box located at the bottom of the storage tank. One end of the equipment box is equipped with a drive motor, and the output end of the drive motor is equipped with a drive bevel gear. The drive motor drives the drive bevel gear to rotate. This utility model, by including a storage tank, a processing mechanism, a scraper, and a drive motor, utilizes the operation of the drive motor to drive the drive bevel gear to rotate. Through the transmission of the second bevel gear, the rotating rod can be rotated. The scraper on the rotating rod can scrape off the residue on the spiral nozzle, reducing adhesive residue and improving the uniformity of spraying.

Description

Technical Field

[0001] This utility model relates to the field of spraying device technology, specifically a hot melt adhesive spraying device for diaper cores. Background Technology

[0002] In recent years, the global diaper market has shown steady growth. As consumers' demands for the quality of infant and adult care products continue to rise, diaper manufacturing processes are also constantly being innovated. In the diaper manufacturing process, the core component, as the most important element, directly affects the product's absorbency, dryness, and comfort. Hot melt adhesive plays a crucial bonding role in the core assembly, firmly connecting the top layer, absorbent layer, and bottom layer, and is applied using a spraying device.

[0003] Regarding the aforementioned technologies, the applicant believes that when the hot melt adhesive spraying device for diaper cores is in operation, the processed core is moved to a position below the spiral nozzle, and the hot melt adhesive is pumped through an insulated conveying pipeline using a feed pump. Under pressure, the hot melt adhesive enters the spiral nozzle, and the spiral groove inside the nozzle accelerates the rotation of the adhesive liquid, forming a hollow cone-shaped spray with uniform particle size, which is evenly sprayed onto the surface of the core. However, when the hot melt adhesive passes through the spiral nozzle, some of the adhesive liquid remains and solidifies on the surface of the spiral nozzle, forming a residue layer, which affects the uniformity of the hot melt adhesive spraying. Utility Model Content

[0004] The purpose of this invention is to provide a hot melt adhesive spraying device for diaper cores, in order to solve the problem mentioned in the background art that when hot melt adhesive passes through a spiral nozzle, some of the adhesive will remain and solidify on the surface of the spiral nozzle, forming an adhesive residue layer, which affects the uniformity of hot melt adhesive spraying.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a hot melt adhesive spraying device for diaper cores, comprising a storage tank and a processing mechanism. The processing mechanism is located at the bottom of the storage tank and includes an equipment box located at the bottom of the storage tank. One end of the equipment box is equipped with a drive motor, and the output end of the drive motor is equipped with a drive bevel gear. The drive motor drives the drive bevel gear to rotate. A first bevel gear is meshed below the end of the drive bevel gear away from the drive motor. A rotating rod is located at the bottom of the first bevel gear, and scrapers are located below both ends of the rotating rod.

[0006] By adopting the above technical solution, the operation of the drive motor can drive the active bevel gear to rotate. Through the transmission of the first bevel gear, the rotating rod can be driven to rotate. The scraper on the rotating rod can scrape off the glue residue on the spiral nozzle, which can reduce glue residue and improve the uniformity of the spraying.

[0007] Preferably, the storage tank is provided with a device body on the outside, and a conveying pump is provided at the bottom of the device body. The input end of the conveying pump is provided with a suction pipe. The end of the suction pipe away from the conveying pump is inserted into the interior of the storage tank. The output end of the conveying pump is provided with a conveying pipe. Both ends of the bottom of the device body are provided with spiral nozzles. The end of the conveying pipe away from the conveying pump is connected to the spiral nozzle.

[0008] By adopting the above technical solution, the feed pump can transport hot melt adhesive to the spiral nozzle through the suction pipe and the feed pipe. The hot melt adhesive enters the spiral nozzle under pressure. The spiral groove inside the spiral nozzle accelerates the rotation of the adhesive liquid, forming a hollow cone spray with uniform particle size, which is evenly sprayed on the surface of the core.

[0009] Preferably, a fixing base is provided on the outside of the main body of the device, and mounting rods are provided at both ends of the fixing base, with mounting holes evenly opened inside the mounting rods.

[0010] By adopting the above technical solution, the mounting rod can be easily fixed by passing the fixing bolt through the mounting hole, thereby facilitating the support of the main body of the device.

[0011] Preferably, heating tubes are evenly arranged at both ends inside the storage tank, and a lid is provided at the top of the storage tank.

[0012] By adopting the above technical solution, the heating tube can conveniently heat the hot melt adhesive inside the storage tank.

[0013] Preferably, the inside of the box cover has a feeding port, and the top of the feeding port is hinged with a sealing cap.

[0014] By adopting the above technical solution, hot melt adhesive can be injected into the storage tank through the feeding port.

[0015] Preferably, a second bevel gear is meshed above the end of the active bevel gear near the first bevel gear, and a stirring rod is provided at the top of the second bevel gear.

[0016] By adopting the above technical solution, when the active bevel gear rotates, the stirring rod can be driven to rotate through the transmission of the second bevel gear.

[0017] Preferably, the stirring rod is inserted into the interior of the storage tank, and stirring blades are evenly arranged on the outside of the stirring rod.

[0018] By adopting the above technical solution, it is convenient to mix the hot melt adhesive inside the storage tank.

[0019] Preferably, the inner surface of the sealing cap is provided with a sealing gasket, which is made of rubber.

[0020] By adopting the above technical solution, the feeding port can be easily sealed.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] The system is equipped with a storage tank, processing mechanism, scraper, and drive motor. The drive motor rotates the primary bevel gear, which in turn rotates the rotating rod via the transmission of the primary bevel gear. The scraper on the rotating rod removes adhesive residue from the spiral nozzle, reducing adhesive residue and improving the uniformity of the coating. Simultaneously, the rotation of the primary bevel gear, transmitted through the transmission of the secondary bevel gear, drives the stirring rod to mix the hot melt adhesive inside the storage tank, minimizing the possibility of the adhesive hardening. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the internal structure of the main body of the device of this utility model;

[0025] Figure 3 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0026] Figure 4 This is a schematic diagram of the internal structure of the equipment box of this utility model.

[0027] In the diagram: 1. Main body of the device; 2. Mounting rod; 3. Fixing base; 4. Mounting hole; 5. Box cover; 6. Storage tank; 7. Heating tube; 8. Processing mechanism; 801. Equipment box; 802. Scraper; 803. Rotating rod; 804. Stirring rod; 805. Drive motor; 806. Drive bevel gear; 807. First bevel gear; 808. Second bevel gear; 9. Conveying pipe; 10. Spiral nozzle; 11. Conveying pump; 12. Suction pipe; 13. Feeding port; 14. Sealing cover; 15. Sealing gasket. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example 1

[0030] Please see Figures 1 to 4This embodiment provides a technical solution: a hot melt adhesive spraying device for diaper cores, including a storage tank 6 and a processing mechanism 8. The processing mechanism 8 is located at the bottom of the storage tank 6 and includes an equipment box 801 fixedly connected to the bottom of the storage tank 6. The equipment box 801 can provide load-bearing capacity. A drive motor 805 is provided at one end of the equipment box 801. The drive motor 805 works based on the principle that a current-carrying conductor moves under the force in a magnetic field. The stator generates a magnetic field, and the coils on the rotor become current-carrying conductors after being energized. Under the action of Ampere force in the magnetic field, torque is generated, causing the rotor to rotate. At the same time, the commutator continuously changes the direction of the coil current to ensure that the rotor rotates continuously in the same direction. When selecting the drive motor 805, the appropriate model should be selected according to the actual needs. All the components required in the drive motor 805 are existing technologies and will not be described in detail below.

[0031] The output end of the drive motor 805 is equipped with a drive bevel gear 806, which drives the drive bevel gear 806 to rotate. A first bevel gear 807 is meshed below the end of the drive bevel gear 806 away from the drive motor 805. A rotating rod 803 is provided at the bottom of the first bevel gear 807. Scrapers 802 are provided below both ends of the rotating rod 803. After the drive motor 805 starts running, the drive bevel gear 806 starts to rotate at a stable speed and meshes with the first bevel gear 807 and the second bevel gear 808. The first bevel gear 807 can drive the rotating rod 803 to rotate, making it rotate stably. The scraper 802 on its outside moves in a circle with the rotating rod 803, which can efficiently peel off the glue residue that has been cured on the surface of the spiral nozzle 10, reduce glue residue, and improve the uniformity of the spraying.

[0032] Heating tubes 7 are evenly arranged at both ends inside the storage tank 6. The heating tubes 7 can conveniently heat the hot melt adhesive inside the storage tank 6. The heating tubes 7 are equipped with a temperature control device. When working, current passes through the internal resistance wire, and heat is generated based on the current heating effect for heating. When the temperature reaches the preset upper limit of the temperature control device, the temperature control device will cut off the circuit and the heating tube 7 will stop heating. When the temperature drops to the preset lower limit, the temperature control device will turn on the circuit again and the heating tube 7 will start heating again, thereby maintaining the heated object within the set temperature range. When selecting, the appropriate model should be selected according to the actual needs. The components required in the heating tube 7 are all existing technologies and will not be described in detail below.

[0033] The storage tank 6 has a lid 5 at its top, and a feeding port 13 is provided inside the lid 5. A sealing cover 14 is hinged to the top of the feeding port 13. A sealing gasket 15 made of rubber is provided on the inner surface of the sealing cover 14 to facilitate sealing of the feeding port 13. A second bevel gear 808 is meshed above the first bevel gear 807 near the top of the drive bevel gear 806. A stirring rod 804 is provided at the top of the second bevel gear 808. The stirring rod 804 is inserted into the storage tank 6. Stirring blades are evenly arranged on the outside of the stirring rod 804 to facilitate mixing of the hot melt adhesive inside the storage tank 6.

[0034] The overall effect of this embodiment is as follows: The drive motor 805 is started by a control switch. After the drive motor 805 starts running, the active bevel gear 806 begins to rotate at a stable speed, simultaneously meshing with the first bevel gear 807 and the second bevel gear 808. The first bevel gear 807 drives the rotating rod 803 to rotate stably. The scraper 802 on its exterior moves in a circular motion with the rotating rod 803, efficiently removing the cured adhesive residue from the surface of the spiral nozzle 10, reducing adhesive residue and improving the uniformity of the coating. Meanwhile, the rotation of the second bevel gear 808 drives the stirring rod 804 to operate slowly and smoothly. The stirring blades on the exterior of the stirring rod 804 stir the hot melt adhesive inside the storage tank 6, improving the temperature uniformity of the hot melt adhesive inside the storage tank 6 and minimizing premature curing caused by localized overheating of the hot melt adhesive, thus improving the practicality of the device.

[0035] Example 2

[0036] The storage tank 6 is externally equipped with a main body 1. Inside the main body 1, at its bottom, is a conveying pump 11. The conveying pump 11 is a high-precision gear metering pump. Its basic working principle involves conveying and metering hot melt adhesive through a pair of meshing gears. Driven by a servo motor, the gears rotate, creating a low-pressure zone at the feed end where the gears disengage. Hot melt adhesive is drawn into the pump chamber under atmospheric pressure. As the gears rotate, the hot melt adhesive is enclosed in the space formed by the gear grooves and the pump body, and is forcibly conveyed along the pump body wall to the discharge end where the gears re-mesh. At the discharge end, the re-meshing of the gears generates pressure, pumping the hot melt adhesive out at a stable flow rate. The gear speed is adjusted via feedback from a PLC control system to achieve precise quantitative delivery of the hot melt adhesive, providing a stable adhesive source for the spiral nozzle 10 and ensuring the accuracy and uniformity of the spraying operation. When selecting a pump 11, the appropriate model should be chosen based on actual needs. All components required within the conveying pump 11 are existing technologies and will not be described further below.

[0037] The input end of the feed pump 11 is provided with a suction pipe 12. The end of the suction pipe 12 away from the feed pump 11 is inserted into the interior of the storage tank 6. The output end of the feed pump 11 is provided with a feed pipe 9. Both ends of the bottom of the device body 1 are provided with spiral nozzles 10. The spiral nozzles 10 have a guide spiral groove inside. The end of the feed pipe 9 away from the feed pump 11 is connected to the spiral nozzles 10.

[0038] The effect achieved by the entire embodiment 2 is as follows: the feed pump 11 can transport the hot melt adhesive to the spiral nozzle 10 through the suction pipe 12 and the feed pipe 9. The hot melt adhesive enters the spiral nozzle 10 under pressure. The spiral groove inside the spiral nozzle 10 accelerates the rotation of the adhesive liquid, forming a hollow cone spray with uniform particle size, which is evenly sprayed on the surface of the core.

[0039] Example 3

[0040] The main body 1 of the device is provided with a fixed base 3 on the outside. Both ends of the fixed base 3 are provided with mounting rods 2, and mounting holes 4 are evenly opened inside the mounting rods 2.

[0041] The effect achieved by the entire embodiment 3 is that by passing the fixing bolt through the mounting hole 4, the mounting rod 2 can be easily fixed, thereby facilitating the support of the main body 1 of the device.

[0042] Working principle: Move the processing core to below the spiral nozzle 10, and start the feed pump 11 using the control switch. The feed pump 11 can transport the hot melt adhesive to the spiral nozzle 10 through the suction pipe 12 and the feed pipe 9. The hot melt adhesive enters the spiral nozzle 10 under pressure. The spiral groove inside the spiral nozzle 10 accelerates the rotation of the adhesive liquid, forming a hollow cone spray with uniform particle size, which is evenly sprayed on the surface of the core.

[0043] Secondly, after the spraying is completed, the drive motor 805 is started using the control switch. Once the drive motor 805 starts running, the active bevel gear 806 begins to rotate at a stable speed, simultaneously meshing with the first bevel gear 807 and the second bevel gear 808. The first bevel gear 807 drives the rotating rod 803 to rotate stably. Its external scraper 802 moves in a circular motion with the rotating rod 803, efficiently removing the cured adhesive residue from the surface of the spiral nozzle 10, reducing adhesive residue and improving the uniformity of the spraying. Meanwhile, the rotation of the second bevel gear 808 drives the stirring rod 804 to operate slowly and smoothly. The stirring blades outside the stirring rod 804 stir the hot melt adhesive inside the storage tank 6, improving the temperature uniformity of the hot melt adhesive inside the storage tank 6 and minimizing premature curing caused by localized overheating of the hot melt adhesive, thus improving the practicality of the device.

[0044] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A paper diaper core body hot melt adhesive spraying device, characterized in that: include: Storage tank (6); Processing mechanism (8), the processing mechanism (8) is located at the bottom of the storage tank (6), the processing mechanism (8) includes an equipment box (801) located at the bottom of the storage tank (6). A drive motor (805) is provided at one end of the equipment box (801). An active bevel gear (806) is provided at the output end of the drive motor (805). The drive motor (805) drives the active bevel gear (806) to rotate. A first bevel gear (807) is meshed below the end of the active bevel gear (806) away from the drive motor (805). A rotating rod (803) is provided at the bottom end of the first bevel gear (807). Scrapers (802) are provided below both ends of the rotating rod (803).

2. The hot melt adhesive spraying device for diaper cores according to claim 1, characterized in that: The storage tank (6) is provided with a device body (1) on the outside. The bottom of the device body (1) is provided with a conveying pump (11). The input end of the conveying pump (11) is provided with a suction pipe (12). The end of the suction pipe (12) away from the conveying pump (11) is inserted into the interior of the storage tank (6). The output end of the conveying pump (11) is provided with a conveying pipe (9). Both ends of the bottom of the device body (1) are provided with spiral nozzles (10). The end of the conveying pipe (9) away from the conveying pump (11) is connected to the spiral nozzle (10).

3. The paper diaper core hot melt glue spraying device according to claim 2, characterized in that: The device body (1) is provided with a fixed base (3) on the outside. Both ends of the fixed base (3) are provided with mounting rods (2). The mounting rods (2) are provided with mounting holes (4) evenly distributed inside.

4. The paper diaper core hot melt glue spraying device according to claim 1, characterized in that: Heating tubes (7) are evenly arranged at both ends inside the storage tank (6), and a lid (5) is provided at the top of the storage tank (6).

5. The paper diaper core hot melt glue spraying device according to claim 4, characterized in that: The inside of the box cover (5) is provided with a feeding port (13), and a sealing cap (14) is hinged to the top of the feeding port (13).

6. The paper diaper core hot melt glue spraying device according to claim 1, characterized in that: The active bevel gear (806) is meshed with a second bevel gear (808) above the end of the first bevel gear (807), and a stirring rod (804) is provided at the top of the second bevel gear (808).

7. The paper diaper core hot melt glue spraying device according to claim 6, characterized in that: The stirring rod (804) is inserted into the storage tank (6), and stirring blades are evenly arranged on the outside of the stirring rod (804).

8. The paper diaper core hot melt glue spraying device according to claim 5, characterized in that: The inner surface of the sealing cap (14) is provided with a sealing gasket (15), which is made of rubber.

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