Winding device and winding method for melt-blown filter cloth

Abstract

The invention discloses a winding device for melt-blown filter cloth and a winding method thereof, and aims to provide a winding device which can directly control winding pressure according to the requirements of different melt-blown filter cloth so as to meet the winding requirements of the melt-blown filter cloth with different materials and characteristics and improve the winding efficiency of the melt-blown filter cloth. According to the winding device and the winding method for the melt-blown filter cloth, the winding quality and the production efficiency of the melt-blown filter cloth are improved. A winding device for melt-blown filter cloth comprises a machine frame, a winding device, a winding device and a winding device, and a driving roller is arranged on the machine frame; winding shafts are arranged at the two ends of the winding drum, and the winding drum is slidably supported on the rack through the winding shafts; the pressure rod is rotationally arranged on the rack, and the pressure rod abuts against the winding shaft; and the rolling pressure control device applies pressure to the pressure rod, so that the pressure rod abuts against the rolling shaft and drives the rolling shaft to slide until the rolling cylinder or the melt-blown filter cloth on the rolling cylinder abuts against the driving roller, and the driving roller can drive the rolling cylinder to rotate around the rolling shaft.

Description

Technical Field

[0001] The present invention relates to the technical field of meltblown filter cloth winding, and in particular to a meltblown filter cloth winding device and a winding method thereof. Background Art

[0002] Meltblown filter cloth has fine fibers, with a diameter of 1-5μm, many pores, and a fluffy structure, which makes the meltblown cloth have excellent filtering and air permeability. It is a filter material widely used in medical, environmental protection, industrial and other fields. Its manufacturing process needs to be wound by winding equipment. During the winding process of the meltblown filter cloth, if the winding pressure is too high, it will have an adverse effect on the uniformity of the thickness inside and outside the roll of the meltblown filter cloth, the uniformity of the resistance, and the stability of the long-term storage thickness and wind resistance; if the winding pressure is too low, the meltblown cloth and the winding drum are prone to slipping, and the winding end surface is prone to unevenness.

[0003] At present, the general method for controlling the winding pressure of meltblown filter cloth is to use a tension control device to control the tension during the winding process of the meltblown filter cloth to indirectly control the winding pressure; and it is often difficult to adjust the winding pressure according to needs during the winding process of the meltblown filter cloth, and only fixed tension control can be provided, which cannot be adjusted according to specific requirements. In addition, the core of the roll needs to be covered with adhesive tape to prevent the meltblown cloth from slipping. At present, this method has the following shortcomings: First, the tension range that meltblown filter cloth can withstand is very limited. If the tension on the meltblown filter cloth is too large, it will cause the cloth surface to stretch; if the tension on the meltblown filter cloth is too small, the cloth surface will be loose and wrinkled or even unable to be rolled up; and due to the differences in the materials and characteristics of the meltblown filter cloth, different meltblown filter cloths have different requirements for the rolling pressure. Therefore, this method often cannot meet the actual production needs, affecting the rolling quality and efficiency of the meltblown filter cloth. Secondly, it is difficult to adjust the winding pressure as needed during the winding process of the meltblown filter cloth, and only fixed tension control can be provided. When the meltblown cloth is wound at a constant pressure, the inner layer of the meltblown cloth will be subjected to greater pressure, which can easily lead to problems such as uneven thickness inside and outside the roll and uneven resistance, affecting the winding quality of the meltblown filter cloth.

[0004] Third, the use of sticky tape at the core of the roll to prevent the meltblown cloth from slipping is not convenient for actual operation and use, and affects the winding efficiency of the meltblown filter cloth.

[0005] In view of this, a new meltblown filter cloth winding method is needed to solve the problems existing in the meltblown filter cloth winding method in the prior art and to meet the winding requirements of meltblown filter cloths with different materials and characteristics. Summary of the invention

[0006] The purpose of the present invention is to overcome the shortcomings of the meltblown filter cloth winding method in the prior art, and to provide a meltblown filter cloth winding device and a meltblown filter cloth winding method that can directly control the winding pressure according to the needs of different meltblown filter cloths to meet the winding requirements of meltblown filter cloths with different materials and characteristics, thereby improving the winding quality and production efficiency of the meltblown filter cloth.

[0007] The technical solution of the present invention is: A winding device for a meltblown filter cloth, comprising: a frame on which a driving roller is disposed; A winding drum with winding shafts at both ends is slidably supported on the frame by the winding shafts; A pressure rod is rotatably arranged on the frame, and the pressure rod presses against the winding shaft; The winding pressure control device applies pressure to the pressure rod, so that the pressure rod presses against the winding shaft and drives the winding shaft to slide until the winding drum or the meltblown filter cloth on the winding drum presses against the driving roller, so that the driving roller can drive the winding drum to rotate around the winding shaft. Compared with the prior art that uses a tension control device to control the tension during the winding process of the meltblown filter cloth to indirectly control the winding pressure; this scheme uses the pressure of the pressure rod acting on the winding shaft by the winding pressure control device to control the pressing force between the winding drum and the driving roller, thereby directly controlling the winding pressure during the winding process of the meltblown filter cloth (the greater the pressing force between the drum and the driving roller, the greater the winding pressure to which the meltblown filter cloth is subjected during the winding process; conversely, the smaller the winding pressure). In this way, it is not limited by the tension range that the material of the meltblown filter cloth itself can withstand, and the winding pressure can be directly controlled according to the needs of different meltblown filter cloths; the initial winding pressure can be increased to achieve a straight core. The receiving roll (no adhesive tape is required at the core of the roll) can prevent the initial winding pressure from being too small, which may cause slippage between the meltblown cloth and the winding drum, and the problem of uneven winding end surface; it can avoid the problem of excessive tension on the meltblown filter cloth due to the required large winding pressure, which may cause the cloth surface to stretch; the winding pressure control device can also adjust the pressure applied to the winding shaft through the pressure rod during the winding process of the meltblown filter cloth as needed, so as to design different winding pressures as needed, comprehensively considering the anti-slip and end surface neatness of the winding, the uniformity of the thickness inside and outside the roll, the uniformity of the wind resistance, and the stability of the thickness and wind resistance for long-term storage, thereby improving the winding quality and production efficiency of the meltblown filter cloth.

[0008] Preferably, the winding pressure control device acts on the winding shaft through a pressure rod, and generates a winding pressure F1=F*cos(90-β) on the winding drum, wherein: F is the pressure exerted by the winding pressure control device on the winding shaft through the pressure rod; β is the pressure angle β formed between the pressure rod and the moving direction of the reel; As the winding diameter of the winding drum increases, the winding shaft moves away from the driving roller to gradually reduce the pressure angle β. In this way, the pressure of the winding pressure control device on the pressure rod is converted into the winding pressure F1 through the pressure angle β, and the pressure angle β changes from large to small through the increase of the winding diameter of the winding drum, so as to achieve the automatic change of the winding pressure F1 from large to small under the condition of "the pressure F exerted on the winding shaft by the pressure rod by the winding pressure control device remains unchanged", so as to reduce the pressure on the inner layer of the meltblown filter cloth during the winding process, thereby reducing the uneven thickness and uneven resistance between the inner layer of the meltblown filter cloth and the outer layer of the meltblown filter cloth, improving the winding quality of the meltblown filter cloth, and being particularly suitable for the winding needs of high-loft meltblown filter cloth (the thickness and resistance of high-loft meltblown filter cloth under pressure change greatly). In addition, the automatic change of the winding pressure F1 from large to small can also prevent the initial winding pressure from being too small, which may cause the meltblown cloth to slip between the winding drum and the winding end surface to be uneven.

[0009] Preferably, the winding pressure control device includes a pressure cylinder, one end of which is directly or indirectly hinged to the frame, and the other end of which is directly or indirectly hinged to the pressure rod. In this way, the winding pressure F1 of the meltblown filter cloth during winding can be regulated by regulating the force of the pressure cylinder acting on the pressure rod.

[0010] Preferably, the winding pressure control device includes a pressure booster, which is detachably connected to the pressure rod. In this way, the winding pressure F1 of the meltblown filter cloth during winding can be adjusted by changing the weight of the pressure booster.

[0011] Preferably, there is one pressure rod, which presses against a winding shaft at one end of the winding drum; or there are two pressure rods, which correspond to the winding shafts one by one, and press against the corresponding winding shafts.

[0012] A winding method using a winding device for a meltblown filter cloth comprises the following steps in sequence: The winding pressure control device exerts a pressure of F on the winding shaft through the pressure rod, so that the winding drum is against the driving roller; Next, the drive roller drives the take-up drum to rotate around the take-up shaft so that the meltblown filter cloth is reeled onto the take-up drum. During this process, the pressure F exerted on the take-up shaft by the pressure rod by the take-up pressure control device remains unchanged. In the process of winding the meltblown filter cloth onto the winding drum, as the winding diameter of the winding drum increases, the winding shaft moves away from the driving roller, so that the pressure angle β gradually decreases, thereby gradually reducing the winding pressure F1 and realizing variable pressure winding. In this way, it is possible to achieve the automatic change of the winding pressure F1 from large to small under the condition that "the pressure F exerted on the winding shaft by the pressure rod by the winding pressure control device remains unchanged" (for the convenience of actual operation), so as to reduce the pressure on the inner layer of the meltblown filter cloth during the winding process, thereby reducing the uneven thickness and uneven resistance between the inner layer of the meltblown filter cloth and the outer layer of the meltblown filter cloth, improving the winding quality of the meltblown filter cloth, and being particularly suitable for the winding needs of high-loft meltblown filter cloth (the thickness and resistance of high-loft meltblown filter cloth under pressure vary greatly). In addition, realizing the automatic change of the winding pressure F1 from large to small can also prevent the initial winding pressure from being too small, which may cause the meltblown cloth to slip between the winding drum and the winding end surface to be uneven.

[0013] A winding method using a winding device for a meltblown filter cloth comprises the following steps in sequence: The winding pressure control device exerts a pressure of F on the winding shaft through the pressure rod, so that the winding drum is against the driving roller; Next, the drive roller drives the take-up drum to rotate around the take-up shaft so that the meltblown filter cloth is reeled onto the take-up drum. During this process, the pressure F exerted on the take-up shaft by the pressure rod by the take-up pressure control device gradually decreases. In the process of winding the meltblown filter cloth onto the winding drum, as the winding diameter of the winding drum increases, the winding shaft moves away from the driving roller, so that the pressure angle β gradually decreases, and the pressure F gradually decreases, so that the winding pressure F1 gradually decreases, realizing variable pressure winding.

[0014] In this way, the combined effect of "gradually decreasing pressure angle β" and "gradually decreasing pressure F" can be used to further increase the amplitude of the gradually decreasing winding pressure F1 exerted on the meltblown filter cloth during the winding process, so as to further reduce the pressure exerted on the inner meltblown filter cloth during the winding process, thereby reducing the problems of uneven thickness and uneven resistance between the inner and outer meltblown filter cloths, improving the winding quality of the meltblown filter cloth, and being particularly suitable for the winding needs of high-fluff meltblown filter cloths (the thickness and resistance of high-fluff meltblown filter cloths undergo large changes when under pressure).

[0015] A winding method using a winding device for a meltblown filter cloth comprises the following steps in sequence: The winding pressure control device exerts a pressure of F on the winding shaft through the pressure rod, so that the winding drum is against the driving roller; Next, the drive roller drives the take-up drum to rotate around the take-up shaft so that the meltblown filter cloth is reeled onto the take-up drum. During this process, the pressure F exerted by the take-up pressure control device on the take-up shaft through the pressure rod gradually increases. In the process of winding the meltblown filter cloth onto the winding drum, as the winding diameter of the winding drum increases, the winding shaft moves away from the driving roller, causing the pressure angle β to gradually decrease; the change in the winding pressure F1 caused by the gradual decrease in the pressure angle β is offset by the gradual increase in pressure F, so that the winding pressure F1 remains unchanged during the winding process of the meltblown filter cloth. In this way, the winding pressure F1 applied to the meltblown filter cloth during the winding process is kept constant to accommodate the winding of compact meltblown filter cloths. The compact meltblown filter cloth has small changes in thickness and resistance caused by pressure. The winding method with a constant winding pressure F1 not only avoids the problem of uneven thickness and resistance between the inner and outer layers of the meltblown filter cloth, but also avoids the problem of slack between the outer layers of the meltblown filter cloth and uneven winding end surfaces.

[0016] A winding method using a winding device for a meltblown filter cloth comprises the following steps in sequence: The winding pressure control device exerts a pressure of F on the winding shaft through the pressure rod, so that the winding drum is against the driving roller; Next, the drive roller drives the take-up drum to rotate around the take-up shaft so that the meltblown filter cloth is reeled onto the take-up drum. During this process, the pressure F exerted by the take-up pressure control device on the take-up shaft through the pressure rod gradually increases. In the process of winding the meltblown filter cloth onto the winding drum, as the winding diameter of the winding drum increases, the winding shaft moves away from the driving roller, causing the pressure angle β to gradually decrease; the pressure F is gradually increased to offset the change in the winding pressure F1 caused by the gradual decrease in the pressure angle β, so that the winding pressure F1 gradually increases during the winding process of the meltblown filter cloth. In this way, the winding pressure F1 gradually increases during the winding process of the meltblown filter cloth, which can adapt to the winding of some compact meltblown filter cloths. The compact meltblown filter cloth has small changes in thickness and resistance caused by pressure. The winding method of gradually increasing the winding pressure F1 will not cause uneven thickness and resistance between the inner and outer layers of the meltblown filter cloth on the one hand; on the other hand, it can avoid slack between the outer layers of the meltblown filter cloth and prevent the problem of uneven winding end faces.

[0017] A winding method using a winding device for a meltblown filter cloth comprises the following steps in sequence: The winding pressure control device exerts a pressure of F on the winding shaft through the pressure rod, so that the winding drum is against the driving roller; Next, the drive roller drives the take-up drum to rotate around the take-up shaft so that the meltblown filter cloth is reeled onto the take-up drum. During this process, the pressure F exerted by the take-up pressure control device on the take-up shaft through the pressure rod gradually increases. In the process of winding the meltblown filter cloth onto the winding drum, as the winding diameter of the winding drum increases, the winding shaft moves away from the driving roller, causing the pressure angle β to gradually decrease. The change in winding pressure F1 caused by the gradual decrease in pressure angle β is reduced by gradually increasing pressure F, so that the reduction amplitude of winding pressure F1 in the process of winding the meltblown filter cloth becomes smaller.

[0018] In this way, it can adapt to the application of meltblown filter cloth between high-fluffy meltblown filter cloth and compact meltblown filter cloth. On the one hand, it can reduce the pressure on the inner meltblown filter cloth during the winding process, thereby reducing the uneven thickness and uneven resistance between the inner and outer meltblown filter cloths, and improving the winding quality of the meltblown filter cloth; on the other hand, it can avoid the problem of slack between the outer meltblown filter cloths and the uneven winding end surface.

[0019] The beneficial effects of the present invention are: the winding pressure can be directly controlled according to the needs of different meltblown filter cloths to meet the winding requirements of meltblown filter cloths with different materials and characteristics; the winding pressure control device can also adjust the pressure applied to the winding shaft through the pressure rod during the winding process of the meltblown filter cloth as needed, thereby designing different winding pressures according to needs, comprehensively considering the influence of factors such as the anti-slip and end surface neatness of the winding, the uniformity of the thickness inside and outside the roll, the uniformity of the wind resistance, etc., thereby improving the winding quality and production efficiency of the meltblown filter cloth. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of an embodiment of a winding device for a meltblown filter cloth of the present invention.

[0021] Figure 2 It is a structural schematic diagram of a winding device of a meltblown filter cloth of the present invention during the winding process.

[0022] Figure 3 It is a structural schematic diagram of another embodiment of a winding device for a meltblown filter cloth of the present invention.

[0023] In the figure: Driving roller 1; Winding drum 2, winding shaft 2.1; Pressure rod 3; Winding pressure control device 4, pressure cylinder 4.1, rotating support rod 4.2, pressure booster 4.3; Track 5; Meltblown filter cloth6. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments: Specific embodiment 1, as Figure 1 , Figure 2As shown, a winding device for meltblown filter cloth includes a frame, a driving roller 1, a winding drum 2, a pressure rod 3 and a winding pressure control device 4.

[0025] The driving roller 1 is rotatably arranged on the frame. In this embodiment, the driving roller 1 is horizontally distributed. A driving motor (not shown in the figure) is arranged on the frame to drive the driving roller 1 to rotate.

[0026] The reel 2 is used to reel up the meltblown filter cloth 6. Coaxially distributed reel shafts 2.1 are provided at both ends of the reel 2. The reel 2 is slidably supported on the frame by the reel shaft 2.1. The axis of the reel 2 is parallel to the axis of the drive roller 1. The reel shaft 2.1 moves in the horizontal direction. Specifically, two rails 5 are provided on the frame, and the rails 5 are horizontally distributed and perpendicular to the rotation axis of the drive roller 1.

[0027] In one embodiment, the winding drum 2 is supported on two tracks 5 by winding shafts 2.1 at both ends, and the winding drum 2 can slide along the tracks 5 by the winding shafts 2.1 until the winding drum 2 or the meltblown filter cloth on the winding drum 2 abuts against the driving roller 1. In this embodiment, the axis of the winding drum 2 is at the same height as the axis of the driving roller 1. Of course, the axis of the winding drum 2 can also be higher or lower than the axis of the driving roller 1.

[0028] In another embodiment, a sliding seat is provided on the two tracks 5, and the winding drum 2 is rotatably arranged on the sliding seat through the winding shafts 2.1 at both ends, and the sliding seat drives the winding drum 2 to slide along the track 5 until the winding drum 2 or the meltblown filter cloth on the winding drum 2 abuts against the driving roller 1. In this embodiment, the axis of the winding drum 2 is at the same height as the axis of the driving roller 1. Of course, the axis of the winding drum 2 can also be higher or lower than the axis of the driving roller 1.

[0029] The pressure rod 3 is rotatably arranged on the frame, and the pressure rod 3 presses against the winding shaft 2.1. In this embodiment, the pressure rod 3 is inclined, and the rotation axis of the pressure rod 3 is located above the winding drum 2.

[0030] The winding pressure control device 4 applies pressure to the pressure rod 3, so that the pressure rod 3 presses against the winding shaft 2.1 and drives the winding shaft 2.1 to slide until the winding drum 2 or the meltblown filter cloth on the winding drum 2 presses against the driving roller 1. When the winding drum 2 or the meltblown filter cloth on the winding drum 2 presses against the driving roller 1, the driving roller 1 can drive the winding drum 2 to rotate around the winding shaft 2.1. Specifically, the driving motor drives the driving roller 1 to rotate, and the driving roller 1 drives the winding drum 2 to rotate, so as to realize the winding of the meltblown filter cloth onto the winding drum 2.

[0031] Compared with the prior art which uses a tension control device to control the tension during the winding process of the meltblown filter cloth to indirectly control the winding pressure; this embodiment uses a winding pressure control device 4 to control the pressure exerted on the winding shaft 2.1 through the pressure rod 3 to control the clamping force between the winding drum 2 and the driving roller 1, thereby directly controlling the winding pressure during the winding process of the meltblown filter cloth (the greater the clamping force between the drum and the driving roller 1, the greater the winding pressure applied to the meltblown filter cloth during the winding process; conversely, the smaller the winding pressure). In this way, the winding pressure during the winding process of the meltblown filter cloth is not limited by the tension range that the material of the meltblown filter cloth itself can withstand, and the winding pressure can be directly controlled according to the needs of different meltblown filter cloths.

[0032] For example, the initial winding pressure can be increased to achieve direct winding of the core (no adhesive tape is required at the core) to prevent the initial winding pressure from being too low, which may cause the meltblown cloth and the winding drum to slip and the winding end surface to be uneven. It can avoid the problem of excessive tension on the meltblown filter cloth due to the required high winding pressure, which will cause the problem of cloth stretching; in the process of winding the meltblown filter cloth, the winding pressure control device 4 can also adjust the pressure exerted on the winding shaft 2.1 through the pressure rod 3 as needed, so as to design different winding pressures as needed, comprehensively consider the anti-slip and end surface neatness of the winding, the uniformity of the thickness inside and outside the roll, the uniformity of the wind resistance, and the stability of the thickness and wind resistance during long-term storage, so as to improve the winding quality and production efficiency of the meltblown filter cloth. For example, the winding pressure F1 to which the meltblown filter cloth is subjected during the winding process gradually decreases, so as to further reduce the pressure on the inner layer of the meltblown filter cloth during the winding process, thereby reducing the problem of uneven thickness and uneven resistance between the inner layer of the meltblown filter cloth and the outer layer of the meltblown filter cloth, and improving the winding quality of the meltblown filter cloth, which is particularly suitable for the winding needs of high-loft meltblown filter cloth (the thickness and resistance of high-loft meltblown filter cloth under pressure vary greatly); for another example, the winding pressure F1 to which the meltblown filter cloth is subjected during the winding process remains constant, so as to adapt to the winding of compact meltblown filter cloth. The thickness and resistance of compact meltblown filter cloth under pressure vary little, and the winding method of constant winding pressure F1 not only does not cause the problem of uneven thickness and uneven resistance between the inner and outer layers of the meltblown filter cloth, but also avoids the problem of slack between the outer layers of the meltblown filter cloth and the problem of uneven winding end faces, thereby improving the winding quality and production efficiency of the meltblown filter cloth.

[0033] Further, such as Figure 1 , Figure 2 As shown, the winding pressure control device 4 acts on the winding shaft 2.1 through the pressure rod 3, and generates a winding pressure F1=F*cos(90-β) on the winding drum 2, wherein, F is the pressure exerted by the winding pressure control device 4 on the winding shaft 2.1 through the pressure rod 3; β is the pressure angle β formed between the pressure rod 3 and the moving direction of the reel shaft 2.1.

[0034] During the winding process of the meltblown filter cloth 6, as the winding diameter of the winding drum 2 increases, the winding shaft 2.1 moves away from the driving roller 1, so that the pressure angle β gradually decreases. In this way, the pressure of the winding pressure control device 4 on the pressure rod 3 is converted into the winding pressure F1 through the pressure angle β, and the pressure angle β changes from large to small through the increase of the winding diameter of the winding drum 2, so as to achieve the automatic change of the winding pressure F1 from large to small under the condition of "the pressure F exerted by the winding pressure control device 4 on the winding shaft 2.1 through the pressure rod 3 remains unchanged", so as to reduce the pressure on the inner layer of the meltblown filter cloth during the winding process, thereby reducing the problem of uneven thickness and uneven resistance between the inner layer of the meltblown filter cloth and the outer layer of the meltblown filter cloth, improving the winding quality of the meltblown filter cloth, and being particularly suitable for the winding needs of high-loft meltblown filter cloth (the thickness and resistance of high-loft meltblown filter cloth under pressure change greatly). In addition, the automatic change of the winding pressure F1 from large to small can also prevent the initial winding pressure from being too small, which may cause the meltblown cloth and the winding drum 2 to slip and the winding end surface to be uneven.

[0035] The winding pressure control device 4 applies pressure to the pressure rod 3. Specifically, In one embodiment, Figure 1 , Figure 2 As shown, the winding pressure control device 4 includes a pressure cylinder 4.1, which is a pneumatic cylinder or a hydraulic cylinder. One end of the pressure cylinder 4.1 is directly or indirectly hinged on the frame, and the other end of the pressure cylinder 4.1 is directly or indirectly hinged to the pressure rod 3. In this way, during the winding process of the melt-blown filter cloth, the force of the pressure cylinder 4.1 acting on the pressure rod 3 can be controlled by controlling the air source pressure input into the pressure cylinder 4.1, thereby controlling the winding pressure F1 received by the melt-blown filter cloth during the winding process; and during the winding process of the melt-blown filter cloth, as the winding diameter of the winding drum 2 increases, the piston rod of the pressure cylinder 4.1 can be extended and retracted during the process of the winding shaft 2.1 moving away from the driving roller 1.

[0036] In one example, if Figure 1 , Figure 2 As shown, a rotating support rod 4.2 is rotatably arranged on the frame, and the rotation axis of the rotating support rod 4.2 is located above the rotation axis of the pressure rod 3. A fixed rod is fixedly arranged on the pressure rod 3. One end of the cylinder body of the pressure cylinder 4.1 is fixed on the support rod, and the piston rod of the pressure cylinder 4.1 is hingedly connected to the fixed rod.

[0037] In another example, one end of the cylinder body of the pressure cylinder 4.1 is directly hinged to the frame, and the piston rod of the pressure cylinder 4.1 is directly hinged to the pressure rod 3 (not shown in the figure).

[0038] In another embodiment, if Figure 3 As shown, the winding pressure control device 4 includes a booster 4.3. The booster 4.3 is detachably connected to the pressure rod 3. There are one or more boosters 4.3. In this way, the winding pressure F1 of the melt-blown filter cloth during winding can be adjusted by changing the weight of the booster 4.3.

[0039] For example, a weight is used as the pressure booster 4.3. The weight is hung at the lower end of the pressure rod 3. In actual use, the winding pressure F1 of the melt-blown filter cloth during winding can be adjusted by increasing or decreasing the weight.

[0040] The pressure rod 3 is pressed against the winding shaft 2.1. Specifically, in one embodiment, there is one pressure rod 3, which is pressed against the winding shaft 2.1 at one end of the winding drum 2. The winding pressure F1 of the melt-blown filter cloth during winding is regulated by cooperating with the winding pressure control device 4 through one pressure rod 3. The structure is simple and easy to manufacture.

[0041] In another embodiment, there are two pressure rods 3, and the pressure rods 3 correspond to the winding shafts 2.1 one by one, and the pressure rods 3 press against the corresponding winding shafts 2.1. The two pressure rods 3 cooperate with the winding pressure control device 4 to stably and reliably control the winding pressure F1 of the meltblown filter cloth during winding.

[0042] In one example, the two pressure rods 3 are connected as a whole through a connecting rod, and the winding pressure control device 4 controls the two pressure rods 3 to apply pressure synchronously.

[0043] In another example, the two pressure rods 3 are independent of each other, and the winding pressure control device 4 corresponds to the pressure rods 3 one by one.

[0044] Specific embodiment 2 is a winding method using a winding device for a meltblown filter cloth. The specific structure of the winding device for the meltblown filter cloth in this method refers to specific embodiment 1.

[0045] A winding method using a winding device for a meltblown filter cloth comprises the following steps in sequence: The winding pressure control device 4 exerts a pressure F on the winding shaft 2.1 through the pressure rod 3, thereby driving the winding shaft 2.1 to slide, so that the winding drum 2 is against the driving roller 1; Next, the drive roller 1 drives the winding drum 2 to rotate around the winding shaft 2.1, so that the melt-blown filter cloth is wound onto the winding drum 2. During this process, the pressure F exerted by the winding pressure control device 4 on the winding shaft 2.1 through the pressure rod 3 remains unchanged; In the process of winding the meltblown filter cloth onto the winding drum 2, as the winding diameter of the winding drum 2 increases, the winding shaft 2.1 moves away from the driving roller 1, so that the pressure angle β gradually decreases, thereby gradually reducing the winding pressure F1, and realizing variable pressure winding. In this way, it is possible to achieve the automatic change of the winding pressure F1 from large to small under the condition of "the pressure F exerted by the winding pressure control device 4 on the winding shaft 2.1 through the pressure rod 3 remains unchanged" (convenient for actual control), so as to reduce the pressure on the inner layer of the meltblown filter cloth during the winding process, thereby reducing the uneven thickness and uneven resistance between the inner layer of the meltblown filter cloth and the outer layer of the meltblown filter cloth, and improving the winding quality of the meltblown filter cloth. This method is particularly suitable for the winding needs of high-loft meltblown filter cloth (the thickness and resistance of high-loft meltblown filter cloth under pressure vary greatly). In addition, the automatic change of the winding pressure F1 from large to small can also prevent the initial winding pressure from being too small, which may cause the meltblown cloth to slip between the winding drum 2 and the winding end surface to be easily uneven.

[0046] Specific embodiment three, a winding method using a winding device for a meltblown filter cloth, the specific structure of the winding device for the meltblown filter cloth in the method refers to specific embodiment one.

[0047] A winding method using a winding device for a meltblown filter cloth comprises the following steps in sequence: The winding pressure control device 4 exerts a pressure F on the winding shaft 2.1 through the pressure rod 3, thereby driving the winding shaft 2.1 to slide, so that the winding drum 2 is against the driving roller 1; Next, the drive roller 1 drives the winding drum 2 to rotate around the winding shaft 2.1, so that the melt-blown filter cloth is wound onto the winding drum 2. During this process, the pressure F exerted by the winding pressure control device 4 on the winding shaft 2.1 through the pressure rod 3 gradually decreases; In the process of winding the meltblown filter cloth onto the winding drum 2, as the winding diameter of the winding drum 2 increases, the winding shaft 2.1 moves away from the driving roller 1, so that the pressure angle β gradually decreases, and the pressure F gradually decreases, so that the winding pressure F1 gradually decreases (increasing the amplitude of the winding pressure F1 gradually decreasing), and variable pressure winding is achieved. In this way, the amplitude of the winding pressure F1 gradually decreasing to the meltblown filter cloth during the winding process can be increased by the combined effect of "gradually decreasing pressure angle β" and "gradually decreasing pressure F", so as to further reduce the pressure on the inner layer of the meltblown filter cloth during the winding process, thereby reducing the problem of uneven thickness and uneven resistance between the inner layer of the meltblown filter cloth and the outer layer of the meltblown filter cloth, and improving the winding quality of the meltblown filter cloth. This method is particularly suitable for the winding needs of high-loft meltblown filter cloth (the thickness and resistance of high-loft meltblown filter cloth under pressure vary greatly).

[0048] Specific embodiment 4 is a winding method using a winding device for a meltblown filter cloth. The specific structure of the winding device for the meltblown filter cloth in this method refers to specific embodiment 1.

[0049] A winding method using a winding device for a meltblown filter cloth comprises the following steps in sequence: The winding pressure control device 4 exerts a pressure F on the winding shaft 2.1 through the pressure rod 3, thereby driving the winding shaft 2.1 to slide, so that the winding drum 2 is against the driving roller 1; Next, the drive roller 1 drives the winding drum 2 to rotate around the winding shaft 2.1, so that the melt-blown filter cloth is wound onto the winding drum 2. During this process, the pressure F exerted by the winding pressure control device 4 on the winding shaft 2.1 through the pressure rod 3 gradually increases; In the process of winding the meltblown filter cloth onto the winding drum 2, as the winding diameter of the winding drum 2 increases, the winding shaft 2.1 moves away from the driving roller 1, so that the pressure angle β gradually decreases; the change in the winding pressure F1 caused by the gradual decrease in the pressure angle β is offset by the gradual increase in pressure F, so that the winding pressure F1 remains unchanged during the winding process of the meltblown filter cloth. In this way, the winding pressure F1 applied during the winding process of the meltblown filter cloth is kept constant to adapt to the winding of compact meltblown filter cloth. The compact meltblown filter cloth has small changes in thickness and resistance caused by pressure. The winding method with a constant winding pressure F1 not only avoids the problem of uneven thickness and uneven resistance between the inner and outer layers of the meltblown filter cloth, but also avoids the problem of slack between the outer layers of the meltblown filter cloth and uneven winding end surfaces.

[0050] Specific embodiment 5 is a winding method using a winding device for a meltblown filter cloth. The specific structure of the winding device for the meltblown filter cloth in this method refers to specific embodiment 1.

[0051] A winding method using a winding device for a meltblown filter cloth comprises the following steps in sequence: The winding pressure control device 4 exerts a pressure F on the winding shaft 2.1 through the pressure rod 3, thereby driving the winding shaft 2.1 to slide, so that the winding drum 2 is against the driving roller 1; Next, the drive roller 1 drives the winding drum 2 to rotate around the winding shaft 2.1, so that the melt-blown filter cloth is wound onto the winding drum 2. During this process, the pressure F exerted by the winding pressure control device 4 on the winding shaft 2.1 through the pressure rod 3 gradually increases; In the process of winding the meltblown filter cloth onto the winding drum 2, as the winding diameter of the winding drum 2 increases, the winding shaft 2.1 moves away from the driving roller 1, so that the pressure angle β gradually decreases; the change in the winding pressure F1 caused by the gradual decrease in the pressure angle β is offset by the gradual increase in pressure F, so that the winding pressure F1 gradually increases during the winding process of the meltblown filter cloth. In this way, the winding pressure F1 gradually increases during the winding process of the meltblown filter cloth, which can adapt to the winding of some compact meltblown filter cloths. The compact meltblown filter cloth has small changes in thickness and resistance caused by pressure. The winding method of gradually increasing the winding pressure F1 will not cause uneven thickness and uneven resistance between the inner and outer layers of the meltblown filter cloth on the one hand; on the other hand, it can further avoid slack between the outer layers of the meltblown filter cloth and prevent the problem of uneven winding end faces.

[0052] Specific embodiment six, a winding method using a winding device for a meltblown filter cloth, the specific structure of the winding device for the meltblown filter cloth in the method refers to specific embodiment one.

[0053] A winding method using a winding device for a meltblown filter cloth comprises the following steps in sequence: The winding pressure control device 4 exerts a pressure F on the winding shaft 2.1 through the pressure rod 3, thereby driving the winding shaft 2.1 to slide, so that the winding drum 2 is against the driving roller 1; Next, the take-up drum 2 is driven by the driving roller 1 to rotate around the take-up shaft 2.1 so that the meltblown filter cloth is wound onto the take-up drum 2. During this process, the pressure F exerted by the take-up pressure control device 4 on the take-up shaft 2.1 through the pressure rod 3 gradually increases. In the process of the meltblown filter cloth being wound onto the take-up drum 2, as the winding diameter of the take-up drum 2 increases, the take-up shaft 2.1 moves away from the driving roller 1, so that the pressure angle β gradually decreases; the change in the take-up pressure F1 caused by the gradual decrease in the pressure angle β is reduced by gradually increasing the pressure F (that is, the change in the take-up pressure F1 caused by the gradual decrease in the pressure angle β is offset by gradually increasing the pressure F), so that the reduction amplitude of the take-up pressure F1 during the winding process of the meltblown filter cloth becomes smaller. In this way, it can adapt to the application of meltblown filter cloth between high-fluffy meltblown filter cloth and compact meltblown filter cloth. On the one hand, it can reduce the pressure on the inner meltblown filter cloth during the winding process, thereby reducing the uneven thickness and uneven resistance between the inner and outer meltblown filter cloths, and improving the winding quality of the meltblown filter cloth; on the other hand, it can avoid the problem of slack between the outer meltblown filter cloths and the uneven winding end surface.

[0054] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent transformation made to the above embodiment based on the technical essence of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A winding device for meltblown filter cloth, characterized in that: include: a frame on which a driving roller is disposed; A winding drum with winding shafts at both ends is slidably supported on the frame by the winding shafts; A pressure rod is rotatably arranged on the frame, and the pressure rod presses against the winding shaft; The winding pressure control device applies pressure to the pressure rod, so that the pressure rod presses against the winding shaft and drives the winding shaft to slide until the winding drum or the meltblown filter cloth on the winding drum presses against the driving roller, so that the driving roller can drive the winding drum to rotate around the winding shaft.

2. The winding device for meltblown filter cloth according to claim 1 is characterized in that: The winding pressure control device acts on the winding shaft through the pressure rod, and the winding pressure F1 = F*cos(90-β) generated on the winding drum, where: F is the pressure exerted by the winding pressure control device on the winding shaft through the pressure rod; β is the pressure angle β formed between the pressure rod and the moving direction of the reel; As the winding diameter of the winding drum increases, the winding shaft moves away from the driving roller, so that the pressure angle β gradually decreases.

3. A winding device for meltblown filter cloth according to claim 1 or 2, characterized in that: The winding pressure control device comprises a pressure cylinder, one end of which is directly or indirectly hinged on the frame, and the other end of which is directly or indirectly hinged to the pressure rod.

4. A winding device for meltblown filter cloth according to claim 1 or 2, characterized in that: The winding pressure control device comprises a pressure boosting member, which is detachably connected to the pressure rod.

5. A winding device for meltblown filter cloth according to claim 1 or 2, characterized in that: There is one pressure rod, which presses against a winding shaft at one end of the winding drum; or there are two pressure rods, which correspond to the winding shafts one by one, and press against the corresponding winding shafts.

6. A winding method using a winding device for a meltblown filter cloth according to any one of claims 1 to 5, characterized in that: The following steps are included in sequence: The winding pressure control device exerts a pressure of F on the winding shaft through the pressure rod, so that the winding drum is against the driving roller; Next, the drive roller drives the take-up drum to rotate around the take-up shaft so that the meltblown filter cloth is reeled onto the take-up drum. During this process, the pressure F exerted on the take-up shaft by the pressure rod by the take-up pressure control device remains unchanged. In the process of winding the meltblown filter cloth onto the winding drum, as the winding diameter of the winding drum increases, the winding shaft moves away from the driving roller, so that the pressure angle β gradually decreases, thereby gradually reducing the winding pressure F1 and realizing variable pressure winding.

7. A winding method using a winding device for a meltblown filter cloth according to any one of claims 1 to 5, characterized in that: The following steps are included in sequence: The winding pressure control device exerts a pressure of F on the winding shaft through the pressure rod, so that the winding drum is against the driving roller; Next, the drive roller drives the take-up drum to rotate around the take-up shaft so that the meltblown filter cloth is reeled onto the take-up drum. During this process, the pressure F exerted on the take-up shaft by the pressure rod by the take-up pressure control device gradually decreases. In the process of winding the meltblown filter cloth onto the winding drum, as the winding diameter of the winding drum increases, the winding shaft moves away from the driving roller, so that the pressure angle β gradually decreases, and the pressure F gradually decreases, so that the winding pressure F1 gradually decreases, realizing variable pressure winding.

8. A winding method using a winding device for a meltblown filter cloth according to any one of claims 1 to 5, characterized in that: The following steps are included in sequence: The winding pressure control device exerts a pressure of F on the winding shaft through the pressure rod, so that the winding drum is against the driving roller; Next, the drive roller drives the take-up drum to rotate around the take-up shaft so that the meltblown filter cloth is reeled onto the take-up drum. During this process, the pressure F exerted by the take-up pressure control device on the take-up shaft through the pressure rod gradually increases. In the process of winding the meltblown filter cloth onto the winding drum, as the winding diameter of the winding drum increases, the winding shaft moves away from the driving roller, causing the pressure angle β to gradually decrease; the change in winding pressure F1 caused by the gradual decrease in pressure angle β is offset by the gradual increase in pressure F, so that the winding pressure F1 remains unchanged during the winding process of the meltblown filter cloth.

9. A winding method using a winding device for a meltblown filter cloth according to any one of claims 1 to 5, characterized in that: The following steps are included in sequence: The winding pressure control device exerts a pressure of F on the winding shaft through the pressure rod, so that the winding drum is against the driving roller; Next, the drive roller drives the take-up drum to rotate around the take-up shaft so that the meltblown filter cloth is reeled onto the take-up drum. During this process, the pressure F exerted by the take-up pressure control device on the take-up shaft through the pressure rod gradually increases. In the process of winding the meltblown filter cloth onto the winding drum, as the winding diameter of the winding drum increases, the winding shaft moves away from the driving roller, causing the pressure angle β to gradually decrease; the change in winding pressure F1 caused by the gradual decrease in pressure angle β is offset by the gradual increase in pressure F, causing the winding pressure F1 to gradually increase during the winding process of the meltblown filter cloth.

10. A winding method using a winding device for a meltblown filter cloth according to any one of claims 1 to 5, characterized in that: The following steps are included in sequence: The winding pressure control device exerts a pressure of F on the winding shaft through the pressure rod, so that the winding drum is against the driving roller; Next, the drive roller drives the take-up drum to rotate around the take-up shaft so that the meltblown filter cloth is reeled onto the take-up drum. During this process, the pressure F exerted by the take-up pressure control device on the take-up shaft through the pressure rod gradually increases. In the process of winding the meltblown filter cloth onto the winding drum, as the winding diameter of the winding drum increases, the winding shaft moves away from the driving roller, causing the pressure angle β to gradually decrease. The change in winding pressure F1 caused by the gradual decrease in pressure angle β is reduced by gradually increasing pressure F, so that the reduction amplitude of winding pressure F1 in the process of winding the meltblown filter cloth becomes smaller.

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