Nonwoven fabric shower film machine

Abstract

The application belongs to the technical field of non-woven fabric production, and particularly relates to a non-woven fabric film pouring machine, which comprises a machine box, a film pouring device installed on the machine box, and an adjusting device, wherein the adjusting device comprises a first pretreatment mechanism and a second pretreatment mechanism, the first pretreatment mechanism comprises a heating rod, and the second pretreatment mechanism comprises an air pump and a flow guide assembly. The air pump is matched with the heating rod by installing the second pretreatment mechanism on the first pretreatment mechanism. The airflow output by the air pump is converted into hot air after passing through the heating rod. The hot air blows towards the surface of the non-woven fabric through the flow guide assembly. On the one hand, the hot air blows off the dust on the surface of the non-woven fabric, and meanwhile avoids the re-adhesion of dust or mosquitoes and the like on the non-woven fabric during the transmission of the non-woven fabric. On the other hand, the hot air can accelerate the evaporation of moisture on the surface of the non-woven fabric, thereby ensuring the dryness of the surface of the non-woven fabric and the pretreatment of the non-woven fabric before ironing and smoothing, and ensuring the smoothing and film pouring effect of the non-woven fabric in the later period.

Description

Technical Field

[0001] This invention belongs to the field of nonwoven fabric production technology, specifically a nonwoven fabric coating machine. Background Technology

[0002] Non-woven bags are suitable for industries such as food and beverage, catering and takeaway, and liquor supermarkets. The main manufacturing process of non-woven bags includes fabric selection, printing, lamination and bag making. Non-woven fabric lamination is carried out by a lamination machine, which coats the non-woven fabric with plastic heated to a hot melt state at high temperature, and then cools and shapes it. The non-woven fabric lamination machine includes an unwinding mechanism, a winding mechanism, a feeding device, a lamination head, and a heating and cooling device.

[0003] However, before applying a coating to nonwoven fabric, it is necessary to ensure that the surface of the nonwoven fabric is clean and flat to guarantee the coating effect and film adhesion. Although current coating machines can use heated rollers to iron and smooth the wrinkles of the nonwoven fabric before coating, they lack pretreatment before smoothing the fabric. When impurities and dust, especially hard impurities, adhere to the fabric surface, if they are not cleaned before smoothing, the rollers will squeeze the hard impurities during smoothing, causing the dust to adhere to the fabric or the hard impurities to embed in the fabric and damage it, thus affecting the coating effect. Furthermore, existing coating machines lack drying treatment for the fabric before coating, which can easily reduce the adhesion of the coating film.

[0004] In view of this, the present invention provides a nonwoven fabric coating machine, which improves the above-mentioned technical problems. Summary of the Invention

[0005] The technical problem this invention aims to solve is that current nonwoven fabric coating machines lack pretreatment before smoothing the fabric. When impurities and dust, especially hard impurities, adhere to the fabric surface, if they are not cleaned before smoothing, the pressure rollers will squeeze the hard impurities during smoothing, causing the dust to adhere to the fabric or the hard impurities to embed in the fabric and damage it, thus affecting the subsequent coating effect. Furthermore, existing coating machines lack drying treatment before coating the fabric, which can easily reduce the adhesion of the paint film.

[0006] The present invention provides a nonwoven fabric coating machine, including a machine housing and a coating device mounted on the machine housing. The coating device includes multiple coating heads. A conveying mechanism is arranged below the coating device. The conveying mechanism includes multiple conveying rollers. An adjustment device is arranged on the feeding side of the conveying mechanism. The adjustment device includes a first pretreatment mechanism and a second pretreatment mechanism.

[0007] Preferably, the first pretreatment mechanism includes a first pressure roller, which is located on the feeding side of the conveying mechanism. A second pressure roller is arranged directly below the first pressure roller. Both the first and second pressure rollers have heating chambers, and heating rods are arranged in the heating chambers.

[0008] Preferably, the first pressure roller is rotatably connected to the first bracket, the first bracket and the machine housing are fixedly connected by a hydraulic column, the first bracket and the machine housing are slidably connected, the second pressure roller is rotatably connected to the second bracket, and the second bracket is fixedly connected to the machine housing.

[0009] Preferably, the second pretreatment mechanism includes a mounting box, which is fixedly mounted on the first support. The mounting box has an air inlet, and an air pump is fixedly installed inside the mounting box. A flow guiding component is provided at the bottom of the mounting box, and the flow guiding component is connected to the heating chamber of the first pressure roller.

[0010] Preferably, the flow guiding assembly includes a first air inlet ring sleeved on the end of the first pressure roller, the first air inlet ring being rotatably connected to the first pressure roller, a first air inlet pipe being fixedly connected between the first air inlet ring and the mounting box, the first air inlet pipe passing through the first air inlet ring and extending into the heating chamber of the first pressure roller, a second air inlet ring sleeved on the other end of the first pressure roller, the second air inlet ring being rotatably connected to the first pressure roller, a first exhaust pipe being fixedly connected to the second air inlet ring, and the first exhaust pipe passing through the second air inlet ring.

[0011] Preferably, a second exhaust pipe is provided on the side of the first pressure roller away from the first exhaust pipe, and the first exhaust pipe and the second exhaust pipe are fixedly connected.

[0012] Preferably, a baffle is provided between the first exhaust pipe and the first pressure roller, and a fixed shaft passes through the baffle, with a slider fixedly connected to one end of the fixed shaft.

[0013] Preferably, the baffle is provided with an air inlet slot.

[0014] Preferably, a connecting rod is fixedly connected between the slider and the first bracket.

[0015] Preferably, a cold source pipe is installed at the air inlet of the mounting box.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. The present invention provides a nonwoven fabric coating machine, which installs a second pretreatment mechanism on a first pretreatment mechanism, so that an air pump and a heating rod cooperate. The airflow output by the air pump is converted into hot air after passing through the heating rod. The hot air is blown onto the surface of the nonwoven fabric through a guide component. On the one hand, the hot air blows off the dust on the surface of the nonwoven fabric and prevents surrounding dust or insects from re-adhering to the nonwoven fabric during the nonwoven fabric transportation. On the other hand, the hot air can accelerate the evaporation of moisture on the surface of the nonwoven fabric, thereby ensuring that the surface of the nonwoven fabric is dry. This allows the nonwoven fabric to be pretreated before ironing and smoothing, ensuring the smoothing and coating effect of the nonwoven fabric in the later stage, and achieving effective pretreatment of the nonwoven fabric before coating.

[0018] 2. The nonwoven fabric coating machine provided by the present invention, by setting a baffle, can prevent hard particles from continuing to move with the nonwoven fabric during the transmission, scrape off dust and impurity particles on the surface of the nonwoven fabric, and open an air inlet groove on the baffle so that dust and impurity particles are gradually pushed into the air inlet groove by the moving nonwoven fabric, thereby making the baffle an impurity collection plate. At the same time, some airflow enters the air inlet groove, blowing the dust and impurity particles in the air inlet groove to one side of the machine box for easy cleaning by the staff.

[0019] 3. The nonwoven fabric coating machine provided by the present invention is designed to address the issue that some coating machines use air cooling, where the high-speed cold airflow is heated and discharged after passing through the nonwoven fabric. Therefore, a cold source pipe is installed so that when some air-cooled coating machines are in operation, the heated cold air is guided into the cold source pipe and then blown onto the surface of the nonwoven fabric through the guide component, thus reusing the high-speed airflow. Attached Figure Description

[0020] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0021] Figure 1 This is a schematic diagram of the overall appearance and structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the first and second intake rings of the present invention.

[0023] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle;

[0024] Figure 4 This is a schematic diagram of the sealing box structure of the present invention;

[0025] Figure 5 For the present invention Figure 4 Enlarged view at point B in the middle;

[0026] Figure 6 This is a front view schematic diagram of the hydraulic column mechanism of the present invention;

[0027] Figure 7 This is a schematic diagram of the internal structure of the No. 1 pressure roller of the present invention;

[0028] Figure 8 This is a partial cross-sectional view of the sealing box and the first pressure roller of the present invention.

[0029] In the diagram: 1. Chassis; 2. Coating device; 21. Coating head; 3. Conveying mechanism; 31. Conveying roller; 4. Adjusting device; 41. No. 1 pretreatment mechanism; 411. No. 1 pressure roller; 412. No. 2 pressure roller; 413. Heating chamber; 414. Heating rod; 42. No. 2 pretreatment mechanism; 421. Mounting box; 422. Air inlet; 423. Air pump; 424. Air guide assembly; 4241. No. 1 air inlet ring; 4242. No. 1 air inlet pipe; 4243. No. 2 air inlet ring; 4244. No. 1 exhaust pipe; 5. No. 1 bracket; 6. Hydraulic column; 7. No. 2 bracket; 8. No. 2 exhaust pipe; 9. Baffle; 10. Fixed shaft; 11. Slider; 12. Air inlet slot; 13. Connecting rod; 14. Cold source pipe. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] like Figure 1 and Figure 2 As shown, the present invention provides a nonwoven fabric coating machine, including a machine housing 1 and a coating device 2 mounted on the machine housing 1. The coating device 2 includes multiple coating heads 21. The coating device 2 is used to heat and melt coating particles and spray them out through the coating heads 21. Below the coating device 2, a conveying mechanism 3 is provided for conveying nonwoven fabric. The conveying mechanism 3 includes multiple conveying rollers 31. Nonwoven fabric is wound sequentially on the multiple conveying rollers 31. The conveying rollers 31 are driven by a power device. When the conveying rollers 31 rotate, they drive the nonwoven fabric to move. The conveying mechanism 3 includes an unwinding part and a winding part. The conveying rollers 31 of the unwinding part are used to convey the nonwoven fabric to the coating device 2. The conveying rollers 31 of the winding part are used to collect the coated nonwoven fabric. The coating device 2 is located between the unwinding part and the winding part.

[0032] like Figure 1 As shown, an adjustment device 4 is provided on the feeding side of the conveying mechanism 3. The adjustment device 4 is located at the winding part of the conveying mechanism 3. The adjustment device 4 includes a first pre-treatment mechanism 41 and a second pre-treatment mechanism 42. The second pre-treatment mechanism 42 is installed on the first pre-treatment mechanism 41 and cooperates with the first pre-treatment mechanism 41. The first pre-treatment mechanism 41 is used to smooth out the wrinkles of the non-woven fabric during ironing. The second pre-treatment mechanism 42 is used to clean the impurities and dust on the surface of the non-woven fabric before ironing, and cooperates with the first pre-treatment mechanism 41 to dry the non-woven fabric before ironing, so as to ensure the coating effect and the adhesion of the film layer.

[0033] like Figure 2 , Figure 3 , Figure 7 and Figure 8 As shown, the first pretreatment mechanism 41 includes a first pressure roller 411, which is located on the feeding side of the conveying mechanism 3. A second pressure roller 412 is located directly below the first pressure roller 411. Both the first pressure roller 411 and the second pressure roller 412 have heating chambers 413, and heating rods 414 are installed in the heating chambers 413. The nonwoven fabric is located between the first pressure roller 411 and the second pressure roller 412. Both the first pressure roller 411 and the second pressure roller 412 are driven by a power device, and the rotation directions of the first pressure roller 411 and the second pressure roller 412 are opposite. When the coating machine is working, the controller controls the heating rods 414. 4. During operation, the heating rod 414 conducts heat to the first pressure roller 411 and the second pressure roller 412. After heating, the first pressure roller 411 and the second pressure roller 412 iron the wrinkles of the nonwoven fabric while conveying it, smoothing out the wrinkles. At the same time, since the nonwoven fabric is located between the first pressure roller 411 and the second pressure roller 412, both the top and bottom surfaces of the nonwoven fabric are in contact with the first pressure roller 411 and the second pressure roller 412 when it is ironed. The first pressure roller 411 and the second pressure roller 412 hold the nonwoven fabric in place, which has a better ironing effect than ironing with a single pressure roller.

[0034] like Figure 6 As shown, in order to enable the first pretreatment mechanism 41 to adapt to ironing nonwoven fabrics of different thicknesses, a first pressure roller 411 is rotatably connected to a first support 5. A hydraulic column 6 is fixedly connected between the first support 5 and the machine housing 1. A second pressure roller 412 is rotatably connected to a second support 7. The second support 7 is fixedly connected to the machine housing 1. The hydraulic column 6 is controlled by a control device. The extension and retraction of the hydraulic column 6 can adjust the horizontal height of the first pressure roller 411 through the first support 5. The second pressure roller 412 is fixed to the machine housing 1 through the second support 7. Therefore, adjusting the horizontal height of the first pressure roller 411 by the hydraulic column 6 adjusts the distance between the first pressure roller 411 and the second pressure roller 412, so that the first pretreatment mechanism 41 can be used for nonwoven fabrics of different thicknesses. At the same time, the first support 5 is slidably connected to the machine housing 1 through a groove opened on the machine housing 1 to ensure the stability of the first support 5 when adjusting its horizontal height.

[0035] like Figure 1 , Figure 3 , Figure 5 , Figure 7 and Figure 8As shown, the second pretreatment mechanism 42 includes a mounting box 421, which is fixedly mounted on the first bracket 5. The mounting box 421 has an air inlet 422. An air pump 423 is fixedly installed inside the mounting box 421. When the air pump 423 is working, it draws in external airflow through the air inlet 422. The drawn-in airflow then enters the heating chamber 413 of the first pressure roller 411 through the guide component 424 set at the bottom of the mounting box 421. The airflow is heated after passing through the heating chamber 413. The heated airflow continues to be blown toward the surface of the nonwoven fabric under the guidance of the guide component 424, blowing off the dust and particulate impurities on the surface of the nonwoven fabric. The airflow blowing toward the surface of the nonwoven fabric can also prevent mosquitoes from approaching the nonwoven fabric. At the same time, the hot airflow accelerates the evaporation of moisture on the surface of the nonwoven fabric, ensuring that the surface of the nonwoven fabric is dry.

[0036] like Figure 1 , Figure 3 , Figure 5 , Figure 7 and Figure 8 As shown, the flow guiding assembly 424 includes a first air inlet ring 4241 and a second air inlet ring 4243 sleeved at both ends of the first pressure roller 411. The first air inlet ring 4241 is rotatably connected to the first pressure roller 411. A first air inlet pipe 4242 is fixedly connected between the first air inlet ring 4241 and the mounting box 421. The first air inlet pipe 4242 passes through the first air inlet ring 4241 and extends into the heating chamber of the first pressure roller 411. The assembly also includes a housing 1, a hydraulic column 6, a first bracket 5, and a mounting box 4. 21. All intake pipes are fixedly connected. Therefore, when the first pressure roller 411 rotates, the first intake ring 4241 will not rotate with it. The second intake ring 4243 is rotatably connected to the first pressure roller 411. The first exhaust pipe 4244 is fixedly connected to the second intake ring 4243. The second intake ring 4243 is fixedly connected to the housing 1 via a limit rod to prevent it from rotating with the first pressure roller 411. The air pump 423 transmits airflow to... The airflow enters the heating chamber 413 of the first pressure roller 411 through the first air inlet pipe 4242 and then through the first air inlet ring 4241. After being heated, the airflow enters the first exhaust pipe 4244 through the second air inlet ring 4243 fitted on the other end of the first pressure roller 411, and then exits through the first exhaust pipe 4244. Simultaneously, the exhaust direction of the second exhaust pipe 8 is set parallel to the axis of the first pressure roller 411, allowing the airflow to diffuse from one side of the nonwoven fabric to the other side. To improve the dust removal and drying effect of the hot airflow, a second exhaust pipe 8 is provided on the side of the first pressure roller 411 away from the first exhaust pipe 4244. The first exhaust pipe 4244 and the second exhaust pipe 8 are fixedly connected and communicate with each other, so that the airflow discharged from the second air intake ring 4243 is discharged from the first exhaust pipe 4244 and the second exhaust pipe 8 respectively, so that the hot air can be blown towards the non-woven fabrics close to both sides of the first pressure roller 411, prolonging the heating time of the non-woven fabrics and improving the drying and dust removal effects.

[0037] like Figure 2 and Figure 3 As shown, to facilitate the collection of dust blown off the nonwoven fabric by hot air and to prevent dust diffusion, a baffle 9 is installed between the first exhaust pipe 4244 and the first pressure roller 411. A fixed shaft 10 passes through the baffle 9, and a slider 11 is fixedly connected to one end of the fixed shaft 10. The baffle 9 is restricted by the fixed shaft 10 to move relative to the nonwoven fabric, thereby scraping off dust and impurity particles from the nonwoven fabric. The impurity particles are blocked, preventing dust and impurity particles from remaining on the nonwoven fabric at the first pressure roller 411, further improving the efficiency. In addition to its dust removal effect, the baffle 9 can prevent dust from spreading to the first pressure roller 411 after being blown by the hot airflow, thus ensuring the dust removal effect. Furthermore, an air inlet groove 12 is provided on the baffle 9. The air inlet groove 12 is an arc-shaped groove with rounded corners at the bottom of the baffle 9, so that dust and impurity particles are gradually pushed into the air inlet groove 12 by the moving non-woven fabric. At the same time, the air inlet groove 12 guides some airflow into the air inlet groove 12, blowing the dust and impurity particles in the air inlet groove 12 into the dust collection hopper set on the side of the machine box 1, which is convenient for the staff to clean.

[0038] like Figure 3 As shown, a connecting rod 13 is fixedly connected between slider 11 and bracket 5. Sliding slider 11 is slidably connected to housing 1. When hydraulic column 6 works, the distance between first pressure roller 411 and second pressure roller 412 is adjusted by bracket 5. Bracket 5 drives slider 11 to move upward through connecting rod 13. Sliding slider 11 drives baffle 9 to move upward, so that baffle 9 is always in contact with nonwoven fabric to adapt to nonwoven fabric of different thicknesses.

[0039] like Figure 5 As shown, since some nonwoven fabric coating machines use air-cooled cooling to cool and solidify the film layer, the cold airflow discharged from the pump body passes through the coated nonwoven fabric and is discharged. The cold airflow heats up, but it is still a high-speed airflow. Therefore, in order to reuse the high-speed airflow, a cold source pipe 14 is installed at the air inlet 422 of the mounting box 421. The discharged high-speed cold airflow can be guided to the cold source pipe 14 through the pipe. At this time, there is no need for the air pump 423 to work. The high-speed airflow can continue to enter the mounting box 421 under the pressure generated by the pump body, and then be discharged through the guide component 424 and blown onto the surface of the nonwoven fabric, saving energy.

[0040] Working principle:

[0041] Before coating, the nonwoven fabric is first wound sequentially between the unwinding section's conveyor roller 31, the first pressure roller 411, and the second pressure roller 412, and then wound onto the winding section's conveyor roller 31. First, the controller starts the heating rod 414 to heat up. Then, when coating begins, the controller controls the conveyor roller 31 to rotate and starts the air pump 423. The conveyor roller 31 begins to transport the nonwoven fabric. The air pump 423 draws external airflow into the first air inlet pipe 4242, and then enters the heating chamber 413 of the first pressure roller 411 through the first air inlet ring 4241. Then, the airflow heats up and is discharged from the second air inlet ring 4243 to the first exhaust pipe 4244 and the second exhaust pipe 8. The nonwoven fabric first reaches the first exhaust pipe 4244, and the hot airflow discharged from the first exhaust pipe 4244 blows onto the surface of the nonwoven fabric, removing the dust from its surface. Impurity particles are blown off, and at the same time, the hot airflow accelerates the evaporation of moisture on the surface of the nonwoven fabric, ensuring that the surface of the nonwoven fabric is dry. Then, as the nonwoven fabric moves, the baffle 9 scrapes the surface of the nonwoven fabric again to block dust and particulate impurities. Then, the nonwoven fabric is transported between the first pressure roller 411 and the second pressure roller 412. The first pressure roller 411 and the second pressure roller 412, which are heated by the heating rod 414, iron and smooth the nonwoven fabric. This completes the pretreatment of the nonwoven fabric before coating, ensuring the coating effect. Then, the nonwoven fabric is transferred to the coating device 2, and the coating head 21 sprays the film layer onto the surface of the nonwoven fabric. Then, the nonwoven fabric is transported to the cooling equipment, which cools the film layer on the nonwoven fabric. After cooling, the nonwoven fabric is collected by the conveyor roller 31 at the winding section.

[0042] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A nonwoven fabric coating machine, comprising a machine housing (1) and a coating device (2) mounted on the machine housing (1), the coating device (2) comprising a plurality of coating heads (21), and a conveying mechanism (3) disposed below the coating device (2), the conveying mechanism (3) comprising a plurality of conveying rollers (31), characterized in that, An adjustment device (4) is provided on the feeding side of the conveying mechanism (3), and the adjustment device (4) includes a first pre-processing mechanism (41) and a second pre-processing mechanism (42); The first pretreatment mechanism (41) includes a first pressure roller (411), which is located on the feeding side of the conveying mechanism (3). A second pressure roller (412) is arranged directly below the first pressure roller (411). Both the first pressure roller (411) and the second pressure roller (412) are provided with heating chambers (413), and heating rods (414) are arranged in the heating chambers (413). The first pressure roller (411) is rotatably connected to the first bracket (5), and a hydraulic column (6) is fixedly connected between the first bracket (5) and the machine box (1). The first bracket (5) is slidably connected to the machine box (1). The second pressure roller (412) is rotatably connected to the second bracket (7), and the second bracket (7) is fixedly connected to the machine box (1). The second pretreatment mechanism (42) includes a mounting box (421), which is fixedly mounted on the first bracket (5). An air inlet (422) is provided on the mounting box (421). An air pump (423) is fixedly installed inside the mounting box (421). A flow guide assembly (424) is provided at the bottom of the mounting box (421). The flow guide assembly (424) is connected to the heating chamber (413) of the first pressure roller (411). The flow guiding assembly (424) includes a first air intake ring (4241) and a second air intake ring (4243) sleeved at both ends of the first pressure roller (411). The first air intake ring (4241) is rotatably connected to the first pressure roller (411). A first air intake pipe (4242) is fixedly connected between the first air intake ring (4241) and the mounting box (421). The first air intake pipe (4242) passes through the first air intake ring (4241) and extends into the heating chamber (413) of the first pressure roller (411). The second air intake ring (4243) is rotatably connected to the first pressure roller (411). A first exhaust pipe (4244) is fixedly connected to the second air intake ring (4243). The first exhaust pipe (4244) passes through the second air intake ring (4243). The first pressure roller (411) is provided with a second exhaust pipe (8) on the side away from the first exhaust pipe (4244), and the first exhaust pipe (4244) and the second exhaust pipe (8) are fixedly connected. A baffle (9) is provided between the first exhaust pipe (4244) and the first pressure roller (411). A fixed shaft (10) passes through the baffle (9), and a slider (11) is fixedly connected to one end of the fixed shaft (10).

2. The nonwoven fabric coating machine according to claim 1, characterized in that: An air inlet slot (12) is provided on the baffle (9).

3. The nonwoven fabric coating machine according to claim 1, characterized in that: A connecting rod (13) is fixedly connected between the slider (11) and the first bracket (5).

4. The nonwoven fabric coating machine according to claim 1, characterized in that: A cold source pipe (14) is installed at the air inlet (422) of the mounting box (421).

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