A multi-functional hot melt adhesive laminating machine

Abstract

This utility model provides a multifunctional hot melt adhesive laminating machine, relating to the field of hot melt adhesive laminating machines. The multifunctional hot melt adhesive laminating machine includes a base, with four mounting seats fixedly connected to the top of the base. A first guide roller is rotatably connected between the inner sides of two of the mounting seats, and a first pressure roller is rotatably connected between the inner sides of the other two mounting seats. Four connecting frames are fixedly connected to the top of the base. The screw sealing mechanism of this multifunctional hot melt adhesive laminating machine can effectively isolate impurities such as glue mist and debris generated during hot melt adhesive operation, preventing them from entering the screw drive system and ensuring that the screw operates in a clean environment. The screw locking mechanism can reliably lock the screw after the laminating machine completes position or pressure adjustment, preventing accidental rotation or displacement due to equipment vibration, material tension changes, or other factors.

Description

Technical Field

[0001] This utility model relates to a multi-functional hot melt adhesive laminating machine, specifically a multi-functional hot melt adhesive laminating machine, and belongs to the technical field of hot melt adhesive laminating machines. Background Technology

[0002] A hot melt adhesive laminating machine is a device that bonds two or more materials (such as fabric, leather, paper, film, etc.) together using hot melt adhesive. Its working principle involves first heating and melting the hot melt adhesive into a liquid state, then uniformly coating it onto the surface of one of the materials using a coating device. Under pressure and temperature, the other material is then bonded to the adhesive. After the hot melt adhesive cools and solidifies, the two materials are firmly bonded together. This equipment features high lamination efficiency, good bonding strength, and wide applicability to various materials. It has important applications in many industries, including clothing, packaging, furniture, and automotive interiors, meeting the lamination processing needs of different products and providing an efficient and convenient solution for material lamination.

[0003] The prior art patent application number is 202123422659.0, and the patent title is "A Small Hot Melt Adhesive Laminating Machine". It includes a base plate with a top plate above it. Two support columns are fixedly connected to the top of the base plate. A first movable block is located above the support columns. Two pressing rollers are located between the base plate and the top plate. The support columns and the first movable block are both connected to the pressing rollers via a first rotating unit. A threaded column is located above the support columns, penetrating the first movable block. The threaded column and the first movable block are connected by a threaded connection. Both ends of the threaded column are connected to the support columns and the top plate respectively via first bearings. Two guide rollers are located above the base plate, and second movable blocks are located at both ends of the guide rollers. The guide rollers and the second movable blocks are connected via a second rotating unit.

[0004] The device uses a tension spring to lock the bidirectional lead screw. However, with the spring under constant stress, the metal material experiences fatigue and stress relaxation, causing the preload to gradually decrease over time. Once the preload falls below a critical value, the retaining ring cannot effectively restrain the bidirectional lead screw, potentially leading to unexpected rotation and reduced equipment accuracy. Furthermore, the high-temperature molten adhesive continuously generates fine adhesive mist and debris during coating and cooling. The exposed threaded column and lead screw structure, due to their complex spiral patterns, form a natural adsorption trap, easily capturing adhesive residue suspended in the air. As this residue accumulates, it not only increases the frictional resistance between the lead screw and nut, causing adjustment jams, but in severe cases, it can also clog the thread clearance, leading to complete failure of the transmission mechanism, significantly shortening equipment lifespan, and increasing maintenance costs and downtime risks. Therefore, a new technical solution is needed to address this issue. Utility Model Content

[0005] The purpose of this utility model is to provide a multifunctional hot melt adhesive laminating machine to solve the above-mentioned problems. In the prior art, the preload of a tension spring is used to lock the bidirectional lead screw. The spring is under stress for a long time, and the metal material will gradually decrease due to fatigue and stress relaxation. The exposed threaded column and lead screw structure will capture glue residue suspended in the air, which will increase the frictional resistance between the lead screw and the nut.

[0006] This utility model is achieved through the following technical solution: a multi-functional hot melt adhesive laminating machine.

[0007] The device includes a base, on which four mounting seats are fixedly connected to the top. A first guide roller is rotatably connected between the inner sides of two of the mounting seats, and a first pressure roller is rotatably connected between the inner sides of the other two mounting seats. Four connecting frames are fixedly connected to the top of the base, and a top plate is fixedly connected to the top of each connecting frame. The base, mounting seats, connecting frames, and top plate constitute a stable basic frame structure, providing reliable support for the entire device.

[0008] Preferably, four rotating rods are rotatably connected to the top of the top plate. Two of the rotating rods have annular grooves on their outer sides, arranged sequentially from top to bottom. This rotatable connection between the rotating rods and the top plate allows for flexible rotation, providing a basis for the movement of subsequent adjustment components. The annular grooves, in conjunction with other components, enable precise positioning and limiting of the rotating rods' angle or position, facilitating adjustments to the device's operating state according to actual needs and improving the device's applicability and adjustment accuracy.

[0009] Preferably, a threaded rod is fixedly connected to the bottom end of the rotating rod. The bottom end of the threaded rod penetrates the top plate and extends to the bottom of the top plate. A threaded sleeve is threaded onto the outer side of the threaded rod. A sealing sleeve rod is movably connected inside the threaded sleeve. The top end of the sealing sleeve rod is rotatably connected to the top plate. The threaded rod and the threaded sleeve are threadedly engaged. By rotating the rotating rod, the threaded sleeve can move up and down, thereby adjusting the height of the components connected to the threaded sleeve. The design of the sealing sleeve rod ensures the stability of the threaded sleeve during movement, preventing it from shaking or shifting. Furthermore, it provides a seal, effectively preventing dust and impurities from entering, protecting the internal threaded structure, and extending the service life of the device.

[0010] Preferably, a connecting shaft is fixedly connected to the bottom end of the threaded sleeve, and a limiting plate is fixedly connected to one side of the connecting shaft. The limiting plate is slidably connected to the mounting base. Second guide rollers are rotatably connected to the inner sides of the two connecting shafts, with the second guide rollers positioned above the first guide rollers. Second pressure rollers are rotatably connected to the inner sides of the other two connecting shafts, with the second pressure rollers positioned above the first pressure rollers. The arrangement of the connecting shafts and the limiting plate ensures that the second guide rollers and second pressure rollers can slide stably along the mounting base during height adjustment, guaranteeing smoothness and accuracy of the adjustment. The second guide rollers and second pressure rollers are arranged vertically and vertically corresponding to the first guide rollers and first pressure rollers, providing dual guidance and compression of the material, further improving the stability of material conveying and processing quality. Furthermore, by adjusting their height, they can accommodate materials of different thicknesses and specifications.

[0011] Preferably, four mounting brackets are fixedly connected to the top of the top plate. Friction rods are fixedly connected to the inner side of each mounting bracket, and compression springs are sleeved on the outer side of each friction rod. The mounting brackets and friction rods provide a mounting and guiding foundation for the subsequent towing frame. The compression springs, sleeved on the outer side of the friction rods, provide a certain amount of elastic pressure.

[0012] Preferably, a towing frame is movably connected to the outer side of the two friction rods. Two friction rings are embedded inside the towing frame. The friction rings are in contact with the friction rods. The towing frame is movably connected to the friction rods through the friction rings. The friction between the friction rings and the friction rods allows the towing frame to slide stably on the friction rods. At the same time, when the external force is stopped, the friction can keep the position fixed and prevent the towing frame from moving randomly.

[0013] Preferably, a V-shaped positioning block is fixedly connected to the inner side of the towing frame, and a rubber damping pad is adhered to the inner side of the V-shaped positioning block. The rubber damping pad contacts the annular groove. The cooperation between the V-shaped positioning block and the annular groove enables precise positioning and locking of the rotating rod, ensuring that the rotating rod will not rotate after being adjusted to the appropriate position, thus guaranteeing the stability of the device's working state. The rubber damping pad increases the friction between the V-shaped positioning block and the annular groove, improving the reliability of positioning; furthermore, the elasticity of the rubber can buffer the impact force during the positioning process, reducing component wear and extending the service life of the device.

[0014] This utility model provides a multi-functional hot melt adhesive laminating machine, which has the following beneficial effects:

[0015] 1. This multi-functional hot melt adhesive laminating machine, through a screw sealing mechanism, can effectively isolate impurities such as glue mist and debris generated during hot melt adhesive operation, preventing them from entering the screw transmission system. The sealing mechanism can form a protective barrier, ensuring that the screw operates in a clean environment, reducing wear, extending the service life of the screw and related components, while maintaining stable transmission performance, ensuring the accuracy and reliability of the laminating machine during long-term continuous operation, and reducing equipment maintenance frequency and costs.

[0016] 2. This multi-functional hot melt adhesive laminating machine features a screw locking mechanism. This mechanism reliably locks the screw after the laminating machine has completed position or pressure adjustments, preventing accidental rotation or displacement due to equipment vibration, material tension changes, or other factors. This helps maintain the stability of the laminating machine's operation, ensuring that key parameters such as hot melt adhesive coating thickness and lamination pressure remain at their set values, thereby improving the lamination quality and consistency of the products. Attached Figure Description

[0017] Figure 1 This is a front-view three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a bottom-view three-dimensional structural diagram of the present invention;

[0019] Figure 3 This is a cross-sectional view of the screw sealing mechanism of this utility model;

[0020] Figure 4 This is a schematic diagram of the integral screw locking mechanism of this utility model;

[0021] [Explanation of Key Component Symbols]

[0022] 1. Base; 101. Mounting seat; 102. First guide roller; 103. First pressure roller;

[0023] 2. Connecting frame;

[0024] 3. Top plate; 301. Rotating rod; 302. Annular groove;

[0025] 4. Threaded rod; 401. Threaded sleeve; 402. Sealing sleeve rod;

[0026] 5. Connecting shaft; 501. Limiting plate; 502. Second guide roller; 503. Second pressure roller;

[0027] 6. Mounting bracket; 601. Friction rod; 602. Compression spring;

[0028] 7. Traction frame; 701. Friction ring; 702. V-shaped positioning block; 703. Rubber damping pad. Detailed Implementation

[0029] This utility model embodiment provides a multifunctional hot melt adhesive laminating machine.

[0030] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 The system includes a base 1, with four mounting seats 101 fixedly connected to the top of the base 1. A first guide roller 102 is rotatably connected between the inner sides of two mounting seats 101, and a first pressure roller 103 is rotatably connected between the inner sides of the other two mounting seats 101. Four connecting frames 2 are fixedly connected to the top of the base 1, and a top plate 3 is fixedly connected to the top of the connecting frames 2.

[0031] Please refer to it again. Figure 1 , Figure 2 and Figure 3 Four rotating rods 301 are rotatably connected to the top of the top plate 3. Two of the rotating rods 301 have annular grooves 302 on their outer sides, and the annular grooves 302 are arranged sequentially from top to bottom. A threaded rod 4 is fixedly connected to the bottom of the rotating rod 301. The bottom end of the threaded rod 4 passes through the top plate 3 and extends to the bottom of the top plate 3. A threaded sleeve 401 is screwed to the outer side of the threaded rod 4. A sealing sleeve rod 402 is movably connected inside the threaded sleeve 401. The top end of the sealing sleeve rod 402 is rotatably connected to the top plate 3. A connecting shaft 5 is fixedly connected to the bottom end of the threaded sleeve 401. A limiting plate 501 is fixedly connected to one side of the connecting shaft 5. The limiting plate 501 is slidably connected to the mounting base 101. A second guide roller 502 is rotatably connected to the inner side of the two connecting shafts 5. The second guide roller 502 is located above the first guide roller 102. A second pressure roller 503 is rotatably connected to the inner side of the other two connecting shafts 5. The second pressure roller 503 is located above the first pressure roller 103.

[0032] When the rotating rod 301 drives the threaded rod 4 to rotate, the threaded sleeve 401 moves axially along the threaded rod 4. At this time, the sealing sleeve rod 402 and the threaded sleeve 401 form a dynamic sealing structure. The top end of the sealing sleeve rod 402 is rotatably connected to the top plate 3, and the bottom end is inserted into the threaded sleeve 401 and movably connected to it, effectively preventing impurities such as glue mist and debris in the hot melt adhesive working environment from entering the transmission system along the threaded rod 4. When the threaded sleeve 401 moves up and down, the sealing sleeve rod 402 rotates synchronously and maintains a sealing state, which not only ensures the smooth movement of the threaded sleeve 401, but also provides a reliable protective barrier for the threaded rod 4, ensuring the cleanliness and stable operation of the screw drive system.

[0033] Please refer to it again. Figure 1 , Figure 2 and Figure 4Four mounting brackets 6 are fixedly connected to the top of the top plate 3. Friction rods 601 are fixedly connected to the inner side of the mounting brackets 6. Compression springs 602 are sleeved on the outer side of the friction rods 601. A drag frame 7 is movably connected to the outer side of the two friction rods 601. Two friction rings 701 are embedded inside the drag frame 7. The friction rings 701 are in contact with the friction rods 601. A V-shaped positioning block 702 is fixedly connected to the inner side of the drag frame 7. A rubber damping pad 703 is glued to the inner side of the V-shaped positioning block 702. The rubber damping pad 703 is in contact with the annular groove 302.

[0034] After adjustment, the operator moves the tow frame 7 along the friction rod 601, causing the rubber damping pad 703 inside the V-shaped positioning block 702 to engage in the annular groove 302 outside the rotating rod 301. The compression spring 602 applies axial pressure to the tow frame 7 via the mounting bracket 6, generating friction between the friction ring 701 and the friction rod 601. Simultaneously, the meshing structure of the rubber damping pad 703 and the annular groove 302 provides additional positioning resistance. This dual-resistance system effectively prevents accidental rotation of the rotating rod 301, thereby locking the connected threaded rod 4. The elastic properties of the rubber damping pad 703 not only enhance friction but also absorb vibration energy during equipment operation, further improving the reliability of the locking mechanism. When readjustment is required, the tow frame 7 is pulled to overcome the frictional resistance, disengaging the rubber damping pad 703 from the annular groove 302, thus restoring the rotating rod 301 to its free-rotation state.

[0035] Working principle: When the rotating rod 301 drives the threaded rod 4 to rotate, the threaded sleeve 401 moves axially along the threaded rod 4. At this time, the sealing sleeve rod 402 and the threaded sleeve 401 form a dynamic sealing structure. The top end of the sealing sleeve rod 402 is rotatably connected to the top plate 3, and the bottom end is inserted into the threaded sleeve 401 and movably connected to it, effectively preventing impurities such as glue mist and debris in the hot melt adhesive working environment from entering the transmission system along the threaded rod 4. When the threaded sleeve 401 moves up and down, the sealing sleeve rod 402 rotates synchronously and maintains a sealing state, which not only ensures the smooth movement of the threaded sleeve 401, but also provides a reliable protective barrier for the threaded rod 4, ensuring the cleanliness and stable operation of the screw transmission system. After adjustment, the operator moves along the friction rod 601 via the drag frame 7, so that the rubber damping pad 703 on the inner side of the V-shaped positioning block 702 is embedded in the annular groove 302 on the outer side of the rotating rod 301. The compression spring 602 applies axial pressure to the drag frame 7 via the mounting bracket 6, generating friction between the friction ring 701 and the friction rod 601. Simultaneously, the meshing structure of the rubber damping pad 703 and the annular groove 302 provides additional positioning resistance. This dual-resistance system effectively prevents accidental rotation of the rotating rod 301, thereby locking the connected threaded rod 4. The elastic properties of the rubber damping pad 703 not only enhance the friction but also absorb vibration energy during equipment operation, further improving the reliability of the locking mechanism. When readjustment is required, the drag frame 7 is pulled to overcome the frictional resistance, disengaging the rubber damping pad 703 from the annular groove 302, thus restoring the free rotation of the rotating rod 301.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A multifunctional hot melt adhesive laminating machine, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to four mounting seats (101), and a first guide roller (102) is rotatably connected between the inner sides of two mounting seats (101), and a first pressure roller (103) is rotatably connected between the inner sides of the other two mounting seats (101). The base (1) has four connecting brackets (2) fixedly connected to its top, and the connecting brackets (2) have a top plate (3) fixedly connected to their tops.

2. The multifunctional hot melt adhesive laminating machine according to claim 1, characterized in that: The top of the top plate (3) is rotatably connected to four rotating rods (301), and annular grooves (302) are provided on the outer sides of two of the rotating rods (301), and the annular grooves (302) are arranged sequentially from top to bottom.

3. The multifunctional hot melt adhesive laminating machine according to claim 2, characterized in that: The bottom end of the rotating rod (301) is fixedly connected to a threaded rod (4). The bottom end of the threaded rod (4) passes through the top plate (3) and extends to the bottom of the top plate (3). A threaded sleeve (401) is screwed onto the outside of the threaded rod (4). A sealing sleeve rod (402) is movably connected inside the threaded sleeve (401). The top end of the sealing sleeve rod (402) is rotatably connected to the top plate (3).

4. A multifunctional hot melt adhesive laminating machine according to claim 3, characterized in that: The bottom end of the threaded sleeve (401) is fixedly connected to a connecting shaft (5). A limiting plate (501) is fixedly connected to one side of the connecting shaft (5). The limiting plate (501) is slidably connected to the mounting base (101). The inner sides of the two connecting shafts (5) are rotatably connected to a second guide roller (502). The second guide roller (502) is located above the first guide roller (102). The inner sides of the other two connecting shafts (5) are rotatably connected to a second pressure roller (503). The second pressure roller (503) is located above the first pressure roller (103).

5. A multifunctional hot melt adhesive laminating machine according to claim 4, characterized in that: The top of the top plate (3) is fixedly connected to four mounting brackets (6), and a friction rod (601) is fixedly connected to the inner side of the mounting bracket (6). A compression spring (602) is sleeved on the outer side of the friction rod (601).

6. A multifunctional hot melt adhesive laminating machine according to claim 5, characterized in that: A towing frame (7) is movably connected to the outer side of the two friction rods (601). Two friction rings (701) are embedded inside the towing frame (7), and the friction rings (701) are in contact with the friction rods (601).

7. A multifunctional hot melt adhesive laminating machine according to claim 6, characterized in that: A V-shaped positioning block (702) is fixedly connected to the inner side of the towing frame (7), and a rubber damping pad (703) is bonded to the inner side of the V-shaped positioning block (702). The rubber damping pad (703) is in contact with the annular groove (302).

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