Hot melting composite production line for formaldehyde removal sponge

Abstract

The utility model relates to a hot melting composite production line for formaldehyde removal sponge. An existing production line is poor in hot melting compounding effect on a composite film, and potential safety hazards exist. The hot melting compounding device comprises a raw material preparation device, a hot melting compounding device body and a finished product receiving device which are sequentially connected in series from front to back, the hot melting compounding device body comprises a hot roller and a belt assembly covering the local surface of the hot roller, and a hot melting channel is formed between the belt assembly and the peripheral wall of the hot roller. And semi-finished products from the raw material preparation device pass through the hot melting channel under the driving of the belt assembly and form finished products conveyed to the finished product receiving device. The hot roller and the belt assembly are arranged, the belt assembly extrudes the semi-finished products stacked in place to be tightly attached to the surface of the hot roller, so that the semi-finished products are subjected to hot melting compounding by heat generated by the hot roller, the hot melting compounding quality is improved by accurately controlling the temperature, and then the finished product quality and the use experience are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of sponge processing, specifically to an aldehyde-removing sponge hot melt composite production line. BACKGROUND

[0002] In the patent number CN222372316U disclosed a kind of flame composite device with material scattering component, including first supply component, second supply component, flame composite component and finished product collection component, flame composite component receives the bottom material from first supply component and the fabric of second supply component and is transported to finished product collection component after passing through flame composite, the first supply component is set with the material scattering component of downward layer material top surface division scattering functional particles between flame composite component, to make lower layer material and upper layer material adhere by flame composite and clamp functional particles.

[0003] In the patent with application number 2024204026353 disclosed a kind of aldehyde-removing hot melt composite elastic material structure with composite film, a layer of composite film is arranged between bottom material and fabric, and the bottom material and the fabric are adhered by using the composite film, but the existing device uses flame to melt and adhere the sponge, the temperature cannot be accurately controlled, the processing requirements of composite film cannot be met, and the processing quality is affected. UTILITY MODEL CONTENT

[0004] In order to solve the deficiencies of the prior art, the utility model provides an aldehyde-removing sponge hot melt composite production line, which is provided with a hot roller and a belt assembly. The belt assembly extrudes the half-finished product that is stacked in place and tightly adheres to the surface of the hot roller to realize hot melt composite. The temperature is accurately controlled to improve the quality of the finished product and improve the user experience.

[0005] The utility model realizes the following mode: an aldehyde-removing sponge hot melt composite production line includes a raw material preparation device, a hot melt composite device and a finished product collecting device connected in sequence from front to back. The hot melt composite device includes a hot roller and a belt assembly covering part of the surface of the hot roller. The belt assembly and the peripheral wall of the hot roller form a hot melt channel. The half-finished product from the raw material preparation device passes through the hot melt channel under the drive of the belt assembly and forms a finished product transported to the finished product collecting device. The hot roller and the belt assembly are provided. The belt assembly extrudes the half-finished product that is stacked in place and tightly adheres to the surface of the hot roller, so that the half-finished product is hot melt composite by the heat generated by the hot roller. The temperature is accurately controlled to improve the quality of hot melt composite, thereby improving the adhesion effect of the composite film, ensuring the quality of the finished product and improving the user experience.

[0006] Preferably, the belt assembly includes an annular belt in the shape of a C with a notch. The hot roller is disposed within the notch, and the annular belt and the peripheral wall of the hot roller enclose each other to form the hot melt channel. The annular belt is bent into a C-shape so that the central area enclosed by the annular belt has a C-shaped outline, and the inner edge of the C-shaped outline forms a notch that wraps around the hot roller. This allows the semi-finished product in the hot melt channel to adhere tightly to the surface of the hot roller under the pressure of the annular belt, ensuring that the semi-finished product is uniformly heated to form a finished product with complete hot melt bonding. The hot roller rotates and drives the annular belt through the raw material, ensuring that the raw material continuously passes through the hot melt channel and completes continuous hot melt bonding, effectively improving production efficiency. The temperature of the hot roller is constant, and the pressure between the semi-finished product and the surface of the hot roller is balanced, effectively ensuring that each section of the finished product has the required quality.

[0007] Preferably, the central angle of the annular belt with respect to the axis of the hot roller is A, where A > 180°. This not only reduces heat loss and effectively lowers energy consumption by increasing the area of ​​the annular belt covering the surface of the hot roller, but also extends the time for the raw materials to be hot-melted and laminated by increasing the coverage distance of the annular belt. Furthermore, it can increase the material conveying speed and improve output while ensuring the hot-melt lamination effect.

[0008] Preferably, the hot roller is rotatably mounted on the frame. The belt assembly includes several parallel limiting rollers arranged around the periphery of the hot roller. The two ends of the limiting rollers are mounted on the frame via limiting frames. The annular belt is fitted onto the limiting rollers to maintain its C-shaped profile and tightly adhere to the periphery of the hot roller. The limiting rollers support and guide the annular belt, ensuring it maintains its C-shaped profile and forms a hot-melt channel for the semi-finished product to pass through. The hot roller is driven by a motor to rotate, thus conveying the semi-finished product along the hot-melt channel and completing the hot-melt composite operation. The limiting frames are mounted on the frame and do not rotate with the hot roller, ensuring the hot-melt channel position remains constant. The limiting frames can adjust the position of the limiting rollers, thereby adjusting the distance between the annular belt and the hot roller.

[0009] Preferably, the limiting rollers include end rollers positioned at both ends of the annular belt and middle rollers equidistantly positioned between the end rollers. The distance between the limiting rollers and the hot roller is adjustable, allowing the distance between the annular belt and the hot roller to be adjusted when the annular belt is located in the inner edge section of the C-shape. The end rollers, positioned at both ends of the C-shaped profile, drive the annular belt through their own rotation and also pull and shape the annular belt, ensuring that the ends of the C-shaped profile are positioned at the end rollers. The middle rollers, positioned on the surface of the hot roller between the end rollers, ensure that the annular belt is positioned along the middle roller and maintains the C-shaped profile, and also prevent frictional wear between different sections of the annular belt. The adjustable distance between the limiting rollers and the hot roller allows for adjustable width of the hot melt channel, satisfying the requirements for semi-finished product passage, preventing squeezing and wear due to excessive clamping, and ensuring that the semi-finished product can be tightly adhered to the surface of the hot roller, improving the hot melt composite effect.

[0010] Preferably, a cylinder is provided on the limiting frame near the raw material preparation device end to drive the corresponding end roller to move. The cylinder drives the end roller to reciprocate radially along the hot roller, so that the opening and closing of the hot melt channel port is adjustable. A cylinder is provided on the limiting frame at the inlet of the hot melt channel to drive the corresponding end roller to move. The opening and closing of the hot melt channel inlet is realized by adjusting the distance between the end roller and the surface of the hot roller. This facilitates the reception of the semi-finished product edge by opening the hot melt channel inlet, and then uses a ring belt to drive the semi-finished product through the hot melt channel, improving processing convenience.

[0011] Preferably, the belt assembly includes a tension roller disposed in the middle of the annular belt. Both ends of the tension roller are fixed to the periphery of the end wall of the heated drum via corresponding support frames, allowing the distance between the annular belt and the heated drum to be adjusted by the tension roller within the C-shaped outer edge section. The tension roller drives the annular belt away from the heated drum within the C-shaped outer edge section, thereby providing tension to the annular belt.

[0012] Preferably, the raw material preparation device includes a base material supply section, a formaldehyde-removing granule powdering section, a composite film feeding section, and a fabric supply section arranged sequentially from front to back. The base material is successively covered by the formaldehyde-removing granules, the composite film, and the fabric to form the semi-finished product. The formaldehyde-removing granules are scattered between the base material and the composite film, which not only positions the formaldehyde-removing granules but also effectively prevents them from detaching, ensuring that the formaldehyde-removing granules can effectively perform formaldehyde removal operations for a long time. The composite film softens when heated and becomes sticky, which not only adheres and positions the formaldehyde-removing granules but also adheres and bonds the base material and the fabric. The base material is the material located at the bottom of the finished product and is usually a sponge. The fabric is the material located at the top of the finished product and can be a sponge, non-woven fabric, or other materials. The composite film is the material located in the middle of the finished product and is used to connect the base material and the fabric; it is usually a hot-melt film or a hot-melt mesh.

[0013] Preferably, the finished product receiving device includes a cooling section, a material collection buffer section, and a finished product receiving section arranged sequentially from front to back. The finished products from the hot melt lamination device pass through the cooling section and the material collection buffer section and are collected by the finished product receiving section. The cooling section can rapidly cool the finished products that have completed hot melt lamination, effectively reducing the temperature of the finished products curled and stored in the finished product receiving section, and ensuring that the hot melt lamination finished products can be cooled and shaped.

[0014] Preferably, the cooling unit includes a bellows with an air outlet and a fan that provides airflow to the bellows. The air outlet is elongated and wider than the finished product, so that the airflow from the outlet can completely cover the finished product located above the bellows. The fan draws in outside air and forms an airflow that is exhausted through the bellows outlet. The airflow covers the width of the finished product, ensuring that all areas of the finished product are covered by the airflow when it moves to the air outlet, thereby improving the cooling effect. The air outlet guides and limits the airflow, ensuring that the airflow is delivered to the preset area.

[0015] The beneficial effects of this utility model are as follows: The hot roller and belt assembly are set up so that the semi-finished product stacked in place by the belt assembly is tightly bonded to the surface of the hot roller. The composite film is melted by the heat generated by the hot roller and the base material, formaldehyde removal particles and fabric are bonded together, so that the semi-finished product is hot melt composited into the finished product. By precisely controlling the temperature, the hot melt composite quality is improved, thereby improving the adhesion effect of the composite film, ensuring the quality of the finished product and improving the user experience. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the layout of the production line;

[0017] Figure 2 This is a schematic diagram of the production line structure;

[0018] Figure 3 This is a schematic diagram of the structure of the hot melt composite device;

[0019] Figure 4 This is a front view structural diagram of the hot melt composite device;

[0020] Figure 5 This is a schematic diagram of the finished product receiving device;

[0021] Figure 6 This is a schematic diagram of the assembly structure of the bellows;

[0022] Figure 7 A disassembled structural diagram of the raw material preparation device;

[0023] Figure 8 This is a schematic diagram of the axial cross-sectional structure of the hot roller;

[0024] Figure 9This is a radial cross-sectional view of the hot roller.

[0025] In the diagram: 1. Raw material preparation device; 2. Hot melt composite device; 3. Finished product receiving device; 4. Hot roller; 5. Hot melt channel; 6. Circular belt; 7. End roller; 8. Center roller; 9. Cylinder; 10. Tensioning roller; 11. Base material supply section; 12. Formaldehyde removal granule powdering section; 13. Composite film feeding section; 14. Fabric supply section; 15. Cooling section; 16. Material collection and buffer section; 17. Finished product receiving section; 18. Air box; 19. Fan; 20. Air outlet; 21. Outer cylinder; 22. Heating element; 23. Stator. Detailed Implementation

[0026] The essential features of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0027] like Figure 1 and 2 The illustrated formaldehyde-removing sponge hot-melt lamination production line includes a raw material preparation device 1, a hot-melt lamination device 2, and a finished product receiving device 3 connected in series from front to back. The hot-melt lamination device 2 includes a hot roller 4 and a belt assembly covering a portion of the surface of the hot roller 4. A hot-melt channel 5 is formed between the belt assembly and the peripheral wall of the hot roller 4. Semi-finished products from the raw material preparation device 1 are driven by the belt assembly through the hot-melt channel 5 and formed into finished products that are conveyed to the finished product receiving device 3. The hot roller 4 and belt assembly are configured such that the belt assembly compresses and stacks the semi-finished products into a tight fit with the surface of the hot roller 4, allowing the semi-finished products to be hot-melt laminated by the heat generated by the hot roller 4. Precise temperature control improves the hot-melt lamination quality, thereby improving the quality of the finished product and enhancing the user experience. Furthermore, the use of flames is avoided to ensure safety and prevent fires.

[0028] In actual operation, the raw material preparation device 1 includes, from front to back, a base material supply section 11, a formaldehyde removal granule powdering section 12, a composite film feeding section 13, and a fabric supply section 14 (e.g., ...). Figure 7 As shown), the base material is sequentially covered by formaldehyde-removing particles, a composite film, and a fabric to form the semi-finished product. The finished product receiving device 3 includes a cooling section 15, a material collection buffer section 16, and a finished product receiving section 17 arranged sequentially from front to back (e.g., ...). Figure 5 As shown, the finished product from the hot melt laminating device 2 passes through the cooling section 15 and the material collection buffer section 16 and is collected by the finished product receiving section 17. The raw material preparation device 1 is used to collect various raw materials and stack them to form semi-finished products. The hot melt laminating device 2 receives the semi-finished products from the raw material preparation device 1 and forms finished products through hot melt laminating. The finished product receiving device 3 is used to collect the processed finished products and reduce the volume of the finished products by rolling them up, which facilitates subsequent handling and use.

[0029] In actual operation, the belt assembly includes an annular belt 6 (e.g., Figure 3 As shown, the annular belt 6 deforms and adheres to the surface of the hot roller 4, forming a C-shaped outline that does not completely enclose the hot roller 4. The hot roller 4 is positioned within the notch, and the annular belt 6 and the peripheral wall of the hot roller 4 enclose the hot melt channel 5. The semi-finished product passes through the hot melt channel 5 and forms the finished product after hot melt bonding. A local section of the annular belt 6 encloses the surface of the hot roller 4 to form the hot melt channel 5, which clamps the semi-finished product. The annular belt 6 not only drives the semi-finished product to move along the hot melt channel 5 through its own movement, allowing the hot roller 4 to perform streamlined processing of the semi-finished product, but also drives the semi-finished product in the hot melt channel 5 to adhere tightly to the surface of the hot roller 4, ensuring that the heat generated by the hot roller 4 can be effectively transferred to the semi-finished product. An electric heating element is provided inside the hot roller 4 near the surface covered by the annular belt 6. The electric heating element is energized to generate heat and performs the hot melt bonding operation on the semi-finished product in the hot melt channel 5.

[0030] In actual operation, the central angle of the annular belt 6 with respect to the axis of the heated roller 4 is A, where A > 180°. In the preferred embodiment, A = 270°, which not only effectively utilizes the surface area of ​​the heated roller 4 and increases the contact area with the annular belt 6 to improve the conveying speed of the semi-finished products, thereby increasing output, but also forms inlets and outlets at both ends of the C-shaped profile, ensuring that the inlets and outlets are exposed.

[0031] In actual operation, the belt assembly includes several parallel limiting rollers arranged around the periphery of the hot roller 4. The annular belt 6 is fitted onto the limiting rollers to maintain a C-shaped profile and fit tightly against the periphery of the hot roller 4. The limiting rollers include end rollers 7 positioned at both ends of the annular belt 6 and center rollers 8 equidistantly positioned between the end rollers 7 (e.g., ...). Figure 4 (As shown). The annular belt 6 is supported and shaped using limiting rollers. The annular belt 6 is fitted onto the end rollers 7 and the middle roller 8. The end rollers 7 are located at the ends of the C-shaped profile, and the middle roller 8 is located in the middle section of the C-shaped profile. This ensures that the annular belt 6, after being installed, forms a C-shape and fits onto the hot roller 4 using a notch. During use, the distance between the limiting rollers and the hot roller 4 is adjustable. By adjusting the distance between the annular belt 6 and the hot roller 4 in the inner edge section of the C-shape, the width of the hot melt channel 5 can be adjusted. This not only facilitates the processing of semi-finished products of different thicknesses but also ensures that the semi-finished products can be tightly bonded to the surface of the hot roller 4 under the pressure of the annular belt 6, improving the hot melt composite effect.

[0032] In actual operation, the two ends of the limiting roller are fixed to the frame by corresponding limiting frames. The limiting frames can adjust the distance between the limiting roller and the hot roller 4, thereby adjusting the position of the annular belt 6. The limiting frames are mounted on the frame and do not rotate with the hot roller 4. The limiting frames are provided with slides to guide the movement of the end of the limiting roller and a driving component to push the limiting roller to slide along the slides. The driving component drives the limiting roller to slide along the slides, thereby achieving the purpose of adjusting the distance between the annular belt and the surface of the hot roller 4. The driving component can be a screw or a cylinder 9, both of which should be considered as specific embodiments of this utility model. In a preferred embodiment, a cylinder 9 is provided on the limiting frame near the end of the raw material preparation device 1 to drive the corresponding end roller 7 to move, and the limiting rollers on the other limiting frames are manually adjusted by screws, all of which should be considered as specific embodiments of this utility model.

[0033] In actual operation, the hot roller 4 includes a stator 23 and an outer cylinder 21 arranged coaxially with each other (e.g., ...). Figure 8 As shown), a liquid heat-conducting medium is filled between the stator 23 and the outer cylinder 21. The outer cylinder 21 is rotatably mounted on the frame via bearings. The frame is equipped with bearings that drive the outer cylinder 21 to rotate. Heating elements 22 are provided on the stator 23. The heat generated by the heating elements is transferred to the outer cylinder 21 through the liquid heat-conducting medium. The rotating outer cylinder 21 cooperates with the annular belt 6 to perform hot-melt composite processing on the semi-finished product. Multiple heating elements 22 are equidistantly distributed along the circumferential direction of the outer wall of the stator 23 (e.g., ...). Figure 9 As shown, the heating element 22 can be of various forms, including electric heating and flame heating, all of which should be considered specific embodiments of this utility model. The liquid heat transfer medium is preferably heat transfer oil. The stator 23 can be either fixed and limited in rotation or can rotate synchronously with the outer cylinder 21; both should be considered specific embodiments of this utility model.

[0034] In actual operation, the cylinder 9 drives the end roller 7 to reciprocate radially along the hot roller 4, so that the opening and closing of the hot melt channel 5 port is adjustable. When the semi-finished product needs to be assembled and wound before production, firstly, the cylinder 9 drives the end roller 7 away from the surface of the hot roller 4, so that the inlet of the hot melt channel 5 opens; then, the end of the semi-finished product is inserted into the inlet, and the cylinder 9 drives the end roller 7 closer to the surface of the hot roller 4, so that the inlet of the hot melt channel 5 closes and clamps the end edge of the semi-finished product; finally, the hot roller 4 runs and drives the semi-finished product to move along the hot melt channel, and finally completes the hot melt composite operation through the hot melt channel 5 and is output outward.

[0035] In actual operation, the belt assembly includes a tension roller 10 disposed in the middle of the annular belt 6. Both ends of the tension roller 10 are fixed to the frame via corresponding limiting frames to effectively tension the annular belt 6. The tension roller 10 increases the distance between itself and the limiting roller by moving away from the hot roller 4, thereby increasing the perimeter length of the C-shaped profile to tension the annular belt 6. This ensures that the annular belt 6 can tightly adhere to the surface of the hot roller 4 under the drive of the limiting roller, effectively improving the control accuracy of the width of the hot melt channel 5 and preventing the annular belt 6 from being improperly compressed due to localized slack.

[0036] In actual operation, the cooling unit 15 includes a fan box 18 with an air outlet 20 and a fan 19 (e.g., a fan 19 that provides air to the fan box 18) Figure 6 As shown, the air outlet 20 is elongated and wider than the finished product, so that the airflow output from the air outlet 20 can completely cover the finished product located above the air box 18. The fan 19 draws in outside air and forms an airflow that is discharged through the air outlet 20 of the air box 18. The airflow covers the width of the finished product, ensuring that all areas of the finished product are covered by the airflow when they move to the air outlet 20, thereby improving the cooling effect. The air outlet 20 guides and limits the airflow, ensuring that the airflow is delivered to the preset area. A cooling operation space is formed outside the air outlet 20. The finished product passes through the cooling operation space and is collected by the material collection buffer 16. The airflow output from the air outlet 20 is continuously delivered to the cooling operation space to cool the finished product that has passed through the cooling operation space, ensuring that the composite film is cooled and firmly adheres to the base material, formaldehyde removal particles, and fabric.

Claims

1. A formaldehyde-removing sponge hot-melt composite production line, comprising a raw material preparation device (1), a hot-melt composite device (2), and a finished product receiving device connected in series from front to back, characterized in that, The hot melt composite device (2) includes a hot roller (4) and a belt assembly covering a portion of the surface of the hot roller (4). The belt assembly forms a hot melt channel (5) between itself and the peripheral wall of the hot roller (4). The semi-finished product from the raw material preparation device (1) passes through the hot melt channel (5) under the drive of the belt assembly and forms a finished product that is conveyed to the finished product receiving device (3).

2. The formaldehyde-removing sponge hot-melt composite production line according to claim 1, characterized in that, The belt assembly includes an annular belt (6) which is C-shaped with a notch. The hot roller (4) is disposed in the notch, and the annular belt (6) and the peripheral wall of the hot roller (4) enclose each other to form the hot melt channel (5).

3. The formaldehyde-removing sponge hot-melt composite production line according to claim 2, characterized in that, The central angle of the annular belt (6) with the axis of the hot roller (4) as the center is A, where A > 180°.

4. The formaldehyde-removing sponge hot-melt composite production line according to claim 2, characterized in that, The belt assembly includes several parallel limiting rollers arranged around the periphery of the hot roller (4). The two ends of the limiting rollers are mounted on the frame through limiting frames. The annular belt (6) is sleeved on the limiting rollers so that the annular belt (6) maintains a C-shaped profile and fits tightly against the periphery of the hot roller (4).

5. The formaldehyde-removing sponge hot-melt composite production line according to claim 4, characterized in that, The limiting rollers include end rollers (7) placed at both ends of the annular belt (6) and middle rollers (8) placed at equal intervals between the end rollers (7). The distance between the limiting rollers and the hot roller (4) is adjustable so that the distance between the annular belt (6) and the hot roller (4) can be adjusted by the limiting rollers in the inner edge section of the C-shape.

6. The formaldehyde-removing sponge hot-melt composite production line according to claim 5, characterized in that, A cylinder (9) is provided on the limiting frame near the end of the raw material preparation device (1) to drive the corresponding end roller (7) to move. The cylinder (9) drives the end roller (7) to reciprocate radially along the hot roller (4) so ​​that the opening and closing of the hot melt channel (5) port is adjustable.

7. The formaldehyde-removing sponge hot-melt composite production line according to claim 4, characterized in that, The belt assembly includes a tension roller (10) disposed in the middle of the annular belt (6). The two ends of the tension roller (10) are fixed to the periphery of the end wall of the hot roller (4) by corresponding support frames, so that the distance between the annular belt (6) and the hot roller (4) can be adjusted by the tension roller (10) in the C-shaped outer edge section.

8. A formaldehyde-removing sponge hot-melt composite production line according to any one of claims 1-7, characterized in that, The raw material preparation device (1) includes a base material supply section (11), a formaldehyde removal particle powdering section (12), a composite film feeding section (13), and a fabric supply section (14) arranged sequentially from front to back. The base material is covered by formaldehyde removal particles, composite film, and fabric in sequence to form the semi-finished product.

9. A formaldehyde-removing sponge hot-melt composite production line according to any one of claims 1-7, characterized in that, The finished product receiving device (3) includes a cooling section (15), a material collection buffer section (16), and a finished product receiving section (17) arranged sequentially from front to back. The finished products from the hot melt composite device (2) pass through the cooling section (15) and the material collection buffer section (16) and are collected by the finished product receiving section (17).

10. The formaldehyde-removing sponge hot-melt composite production line according to claim 9, characterized in that, The cooling section (15) includes a bellows (18) with an air outlet (20) and a fan (19) that provides air to the bellows (18). The air outlet (20) is elongated and wider than the width of the finished product, so that the airflow output from the air outlet (20) can completely cover the finished product located above the bellows (18).

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