Sponge coater

Abstract

The utility model discloses a kind of sponge gluing machines, it is related to sponge gluing technical field, including bearing frame, the inside of the bearing frame is provided with four rotating rollers one, buffering layer is arranged between the rotating roller one, the inside of the buffering layer is provided with exhaust port, the inside of the bearing frame is installed with sealing brush in the position of rotating roller one close to both sides, the inside of the sealing brush is provided with exhaust groove, when hot melt adhesive is preheated, steam can enter into air inlet pipe to preheat and warm hot melt adhesive, so that hot melt adhesive can soften and better adhere on sponge, hot gas containing steam and pungent gas generated by hot melt adhesive can enter into the exhaust pipe below through the exhaust port of the inside of buffering layer and the position of sealing brush, and the exhaust groove space reserved by sealing brush is larger, increase the air flow speed of in-out position, solve the problem that pungent smell is generated when sponge is preheated hot melt adhesive.

Description

Technical Field

[0001] This utility model relates to the field of sponge coating technology, specifically a sponge coating machine. Background Technology

[0002] The core function of a sponge coating machine is to provide an efficient and precise coating solution for sponge production and processing. Specifically, it can be summarized as follows: through automated or semi-automated methods, it uniformly and quantitatively coats the sponge surface or specific areas with suitable adhesives (such as water-based adhesives, hot melt adhesives, etc.). This avoids the problems of uneven thickness and waste of adhesives caused by manual coating, ensuring the strength and consistency of the bonding between the sponge and materials such as fabrics, metals, and plastics. It can also significantly improve the efficiency of mass production (such as sofa sponge and packaging sponge processing). At the same time, the coating parameters (such as coating width and speed) can be adjusted according to the sponge type and adhesive characteristics to adapt to different bonding needs. Furthermore, it can reduce the intensity of manual labor, reduce the product defect rate caused by manual operation, and ensure standardized production.

[0003] Hot melt adhesive requires heating to be applied to a sponge because its main components are thermoplastic resins such as EVA and SIS, which are solid at room temperature. In this state, it cannot flow and be applied, nor can it penetrate the pores of the sponge, thus lacking the foundation for adhesion. Only when heated to 65-160℃ (depending on the type) will the thermoplastic resin melt into a liquid state. The liquid adhesive can then be evenly applied to the sponge surface and penetrate the tiny pores of the surface layer using an adhesive applicator.

[0004] Hot melt adhesives are primarily composed of thermoplastic resins such as EVA (ethylene-vinyl acetate) and SIS (styrene-isoprene-styrene). Therefore, during heating, some components may decompose to produce irritating gases such as vinyl acetate. Furthermore, inferior hot melt adhesives or recycled materials may contain unreacted monomers, which release harmful substances such as formaldehyde and benzene compounds upon heating, resulting in a strong, pungent odor. Even environmentally friendly hot melt adhesives may still release small amounts of VOCs when heated and melted. Utility Model Content

[0005] The purpose of this invention is to provide a sponge coating machine to solve the problems mentioned in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a sponge coating machine, comprising a support frame, four rotating rollers are arranged inside the support frame, a buffer layer is arranged between the rotating rollers, an exhaust port is opened on the inner side of the buffer layer, a sealing brush is installed on the inner side wall of the support frame near the rotating rollers on both sides, an exhaust groove is opened on the inner side of the sealing brush, five rotating rollers and an air inlet pipe are arranged above the support frame, and an exhaust pipe is arranged below the support frame.

[0007] Preferably, a wheel seat is fixedly installed on the inner wall of the load-bearing frame, and the outer surface of the wheel seat is rotatably connected to both ends of the first rotating roller. A load-bearing plate is fixedly installed on the inner wall of the load-bearing frame between the first rotating rollers, and an exhaust port with the same type as the inner side of the buffer layer is opened on the inner side of the load-bearing plate.

[0008] Preferably, an inclined groove is formed on the outer surface of the load-bearing plate and the buffer layer, and a spring is fixedly installed on the outer surface of the inclined groove.

[0009] Preferably, an outer shell is fixedly installed on the outer surface of the load-bearing frame, and sealing covers are rotatably connected to both sides of the outer shell. The inner side of the outer shell is rotatably connected to both ends of the second rotating roller. A transmission rod is fixedly installed at one end of the second rotating roller, and the transmission rod passes through and is rotatably connected to the inner side of the outer shell.

[0010] Preferably, each of the two rollers is fixedly mounted with a driven wheel on the side outside the housing via a transmission rod, and the five driven wheels are interconnected via a synchronous belt, with one of the driven wheels connected to an external transmission device.

[0011] Preferably, an extension shell is fixedly installed on the outer surface of the outer shell, and a protective shell is fixedly installed on one side of both the extension shell and the outer shell. The outer surface of the protective shell is in close contact with the timing belt, the outer surface of the extension shell is fixedly connected to one end of the air intake pipe, and the interior of the extension shell is in communication with the interior of the air intake pipe.

[0012] Preferably, an exhaust shell is fixedly installed on the outer surface of the load-bearing frame, the outer surface of the exhaust shell is fixedly connected to the outer surface of the exhaust pipe, the interior of the exhaust shell is interconnected with the interior of the exhaust pipe, and load-bearing seats are fixedly installed on both sides of the exhaust shell.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This application utilizes the cooperation between the load-bearing frame, rotating roller one, exhaust port, sealing brush, exhaust pipe, and air inlet pipe. During use, the sponge layer can pass normally over the load-bearing frame via rotating roller one. When passing the buffer layer, rotating roller two above can move the solid hot melt adhesive and adhere it to the sponge layer located above rotating roller one and the buffer layer. During the extrusion coating process, the buffer layer will sink appropriately due to the pressure from the adhesive coating above, increasing the contact area of ​​the hot melt adhesive on the sponge. When preheating the hot melt adhesive, the air inlet pipe needs to be connected to a steam pipe, and the exhaust pipe needs to be connected to an air handling equipment pipe containing an air pump. Steam enters the air inlet pipe to preheat the hot melt adhesive, allowing it to soften and adhere better to the sponge. The hot steam and pungent gases from the hot melt adhesive can enter the exhaust pipe below through the exhaust port on the inside of the buffer layer and the location of the sealing brush. They are then drawn away by an air handling unit containing an air pump. The large exhaust groove space reserved in the sealing brush increases the airflow speed at the inlet and outlet, thereby significantly reducing the leakage of hot air and volatile pungent gases and keeping them in the factory. This solves the problem of pungent odor generated when preheating hot melt adhesive for sponge application.

[0015] 2. This application utilizes the cooperation between the extension shell, the outer shell, and the protective shell. The extension shell and the outer shell can provide load-bearing support for the protective shell, and the protective shell can fit tightly against the timing belt to ensure that the timing belt can mesh with all driven pulleys, thereby preventing the timing belt from disengaging from the teeth of the driven pulleys due to gravity. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a sponge coating machine according to the present invention;

[0017] Figure 2 This is a schematic diagram of the two-drive structure of the rotating roller of the sponge coating machine according to the present invention;

[0018] Figure 3 This is a schematic diagram of the explosion structure of the exhaust shell of a sponge coating machine according to the present invention;

[0019] Figure 4 This is a schematic diagram of the overall structure of the support frame of a sponge coating machine according to the present invention;

[0020] Figure 5 This is a schematic diagram of the cross-sectional structure of the buffer layer and the load-bearing plate of a sponge coating machine according to the present invention.

[0021] The following are the labels in the diagram: 1. Load-bearing frame; 2. Roller 1; 3. Buffer layer; 4. Exhaust port; 5. Sealing brush; 6. Exhaust groove; 7. Roller 2; 8. Air inlet pipe; 9. Exhaust pipe; 10. Wheel seat; 11. Load-bearing plate; 12. Inclined groove; 13. Outer shell; 14. Sealing cover; 15. Driven wheel; 16. Extension shell; 17. Protective shell; 18. Exhaust shell. Detailed Implementation

[0022] 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.

[0023] Example: Figures 1-5 As shown, this utility model provides a technical solution for a sponge coating machine, including a support frame 1. Four rotating rollers 2 are arranged inside the support frame 1, and a buffer layer 3 is arranged between the rotating rollers 2. An exhaust port 4 is opened on the inner side of the buffer layer 3. A sealing brush 5 is installed on the inner wall of the support frame 1 near the rotating rollers 2 on both sides. An exhaust groove 6 is opened on the inner side of the sealing brush 5. Five rotating rollers 7 and an air inlet pipe 8 are arranged above the support frame 1, and an exhaust pipe 9 is arranged below the support frame 1. During use, the sponge layer can pass normally through the rotating rollers 2 and over the support frame 1. When passing through the buffer layer 3, the upper rotating rollers 7 can move the solid hot melt adhesive and adhere it to the sponge layer located above the rotating rollers 2 and the buffer layer 3. During the extrusion coating process, the buffer layer 3 will sink appropriately due to the pressure from the upper coating, thus... The increased contact area of ​​the hot melt adhesive on the sponge necessitates connecting the air inlet pipe 8 to the steam pipe and the exhaust pipe 9 to the air handling unit containing an air pump during preheating. Steam enters the air inlet pipe 8 to preheat the hot melt adhesive, softening it and allowing it to adhere better to the sponge. The hot air containing steam and the pungent gases generated by the hot melt adhesive can enter the exhaust pipe 9 below through the exhaust port 4 inside the buffer layer 3 and the sealing brush 5, and then be drawn away by the air handling unit containing the air pump. Furthermore, the large space reserved in the exhaust groove 6 of the sealing brush 5 increases the airflow speed at the inlet and outlet positions, thereby significantly reducing the leakage of hot air and volatile pungent gases and preventing them from remaining in the factory. This solves the problem of pungent odor generated when preheating the hot melt adhesive for sponge application.

[0024] A wheel seat 10 is fixedly installed on the inner wall of the load-bearing frame 1. The outer surface of the wheel seat 10 is rotatably connected to both ends of the rotating roller 2. A load-bearing plate 11 is fixedly installed on the inner wall of the load-bearing frame 1 between the rotating roller 2. The inner side of the load-bearing plate 11 has an exhaust port 4 that is the same as the inner side of the buffer layer 3. The wheel seat 10 can provide support for the rotating roller 2. There is a reserved space between the load-bearing plate 11 and the buffer layer 3. This space can provide a reserved position for the buffer layer 3 to sink.

[0025] An inclined groove 12 is provided on the outer surface of the load-bearing plate 11 and the buffer layer 3. A spring is fixedly installed on the outer surface of the inclined groove 12. The inclined groove 12 can tilt the spring to lift up the buffer sponge. Since it is inclined, the buffer layer 3 will sink in the direction of the sponge movement when it sinks.

[0026] The outer surface of the load-bearing frame 1 is fixedly installed with a housing 13. Both sides of the housing 13 are rotatably connected with sealing covers 14. The inner side of the housing 13 is rotatably connected to both ends of the rotating roller 7. One end of the rotating roller 7 is fixedly installed with a transmission rod, which passes through and is rotatably connected to the inner side of the housing 13. The housing 13 and the sealing covers 14 can provide a sealing effect for areas other than the material inlet and outlet positions to reduce the phenomenon of gas leakage.

[0027] Each of the rollers 2 7 is fixedly mounted with a driven wheel 15 on one side outside the housing 13 via a transmission rod. The five driven wheels 15 are interconnected by a synchronous belt. One of the driven wheels 15 is connected to an external transmission device. The external transmission device can drive all the rollers 2 7 to rotate through the driven wheel 15. The driven wheel 15 is a synchronous wheel, which can cooperate with the synchronous belt to ensure that each roller 2 7 maintains the same speed.

[0028] An extension shell 16 is fixedly installed on the outer surface of the outer shell 13. A protective shell 17 is fixedly installed on one side of both the extension shell 16 and the outer shell 13. The outer surface of the protective shell 17 is in close contact with the timing belt. The outer surface of the extension shell 16 is fixedly connected to one end of the air intake pipe 8. The interior of the extension shell 16 is in communication with the interior of the air intake pipe 8. The protective shell 17 can be in close contact with the timing belt to ensure that the timing belt can mesh with all the driven pulleys 15, so as to avoid the timing belt from disengaging from the teeth of the driven pulleys 15 due to gravity.

[0029] An exhaust shell 18 is fixedly installed on the outer surface of the load-bearing frame 1. The outer surface of the exhaust shell 18 is fixedly connected to the outer surface of the exhaust pipe 9. The interior of the exhaust shell 18 is interconnected with the interior of the exhaust pipe 9. Load-bearing seats are fixedly installed on both sides of the exhaust shell 18. Air flowing downward through the sealing brush 5 and the exhaust port 4 can enter the interior of the exhaust pipe 9 through the exhaust shell 18. As a result, the air handling equipment containing the air pump continuously draws air from the outside, keeping the interior of the exhaust shell 18 in a negative pressure state.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A sponge coating machine, comprising a support frame (1), characterized in that: The load-bearing frame (1) is provided with four rotating rollers (2) inside. A buffer layer (3) is provided between the rotating rollers (2). An exhaust port (4) is provided on the inner side of the buffer layer (3). A sealing brush (5) is installed on the inner wall of the load-bearing frame (1) near the rotating rollers (2) on both sides. An exhaust groove (6) is provided on the inner side of the sealing brush (5). Five rotating rollers (7) and an air inlet pipe (8) are provided above the load-bearing frame (1). An exhaust pipe (9) is provided below the load-bearing frame (1).

2. The sponge coating machine according to claim 1, characterized in that: The inner wall of the load-bearing frame (1) is fixedly installed with a wheel seat (10). The outer surface of the wheel seat (10) is rotatably connected to both ends of the first roller (2). The inner wall of the load-bearing frame (1) between the first roller (2) is fixedly installed with a load-bearing plate (11). The inner side of the load-bearing plate (11) is provided with an exhaust port (4) that is the same as the inner side of the buffer layer (3).

3. A sponge coating machine according to claim 2, characterized in that: An inclined groove (12) is provided on the outer surface of the load-bearing plate (11) and the buffer layer (3), and a spring is fixedly installed on the outer surface of the inclined groove (12).

4. A sponge coating machine according to claim 1, characterized in that: The outer surface of the load-bearing frame (1) is fixedly installed with a shell (13). Both sides of the shell (13) are rotatably connected with sealing caps (14). The inner side of the shell (13) is rotatably connected to both ends of the rotating roller (7). One end of the rotating roller (7) is fixedly installed with a transmission rod. The transmission rod passes through and is rotatably connected to the inner side of the shell (13).

5. A sponge coating machine according to claim 4, characterized in that: Each of the rollers (7) is fixedly mounted with a driven wheel (15) on one side outside the housing (13) via a transmission rod. The five driven wheels (15) are driven by each other via a synchronous belt, and one of the driven wheels (15) is connected to an external transmission device.

6. A sponge coating machine according to claim 4, characterized in that: An expansion shell (16) is fixedly installed on the outer surface of the outer shell (13). A protective shell (17) is fixedly installed on one side of both the expansion shell (16) and the outer shell (13). The outer surface of the protective shell (17) is in close contact with the synchronous belt. The outer surface of the expansion shell (16) is fixedly connected to one end of the air intake pipe (8). The interior of the expansion shell (16) is in communication with the interior of the air intake pipe (8).

7. A sponge coating machine according to claim 1, characterized in that: An exhaust shell (18) is fixedly installed on the outer surface of the load-bearing frame (1). The outer surface of the exhaust shell (18) is fixedly connected to the outer surface of the exhaust pipe (9). The interior of the exhaust shell (18) is interconnected with the interior of the exhaust pipe (9). Load-bearing seats are fixedly installed on both sides of the exhaust shell (18).

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