Saw cutting device for aerogel felt

Abstract

The saw cutting device of the aerogel felt comprises a saw cutting disc assembly and an adjusting assembly, the saw cutting disc assembly comprises a saw seat, a saw disc and a motor, a pressing foot allowing the lower portion of the saw disc to penetrate through is further arranged at the bottom of the saw seat, the saw cutting device further comprises an auxiliary roller, a front feeding roller and a rear feeding roller, and the top faces of the rear feeding roller, the auxiliary roller and the front feeding roller are flush with one another. The front conveying roller, the rear conveying roller and the rear conveying roller are sequentially supported on the bottom surface of the aerogel felt in the advancing direction of the aerogel felt, and the conveying speed of the front conveying roller is higher than that of the rear conveying roller. On one hand, on the basis of the presser foot, the auxiliary roller, the front feeding roller and the rear feeding roller which form a transmission speed difference, saw cutting is carried out under forward pulling tension in the saw cutting process, felt cloth deformation force caused by saw cutting is counteracted, and the formed forward pulling force is more beneficial to advancing of felt cloth; and on the other hand, saw cutting is formed based on synchronous and same-direction movement of the felt cloth and the saw disc, the saw cutting efficiency is high, the saw cutting difficulty coefficient is reduced, and the probability of deviation generated in the saw cutting process is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of preparation of novel fibers and composite materials, and particularly relates to a sawing device for aerogel felt. Background Art

[0002] At present, the production line of aerogel felt (a type of felt) is usually composed of pretreatment equipment, feeding equipment, needle rolling equipment, heat setting equipment and trimming and rolling equipment. In the trimming and rolling process involved, the trimming is mainly based on disc sawing, that is, the feed of the disc cutter is controlled by the translation forward push of the felt, and the disc cutter and the felt are sawed in synchronous motion to remove the waste edges or to perform slitting to the required width.

[0003] However, during the sawing process, the entire aerogel felt is flat and tension-controlled for transmission. Therefore, once slitting is performed, if the tension is not controlled in sections, it is easy to cause slitting deviations between the two adjacent slitting sections due to uneven tension, which directly affects the slitting uniformity and damages the slitting quality. Therefore, the use of the presser foot is conducive to the tension control of the sawing position. However, after using the presser foot, the sawing has a downward force on the felt. If the same transmission speed is maintained between the cutting and the aerogel felt to be cut, it is likely to cause slitting displacement. Therefore, high-quality and high-efficiency sawing cannot be achieved. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an improved aerogel felt sawing device.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A sawing device for aerogel felt, comprising a sawing disc assembly located above a transmission path of the aerogel felt, an adjusting assembly for driving the sawing disc assembly to move up and down to adjust the sawing amount, the sawing disc assembly comprising a saw seat, a saw disk, and a motor, in particular, a pressure foot for the lower part of the saw disk to pass through is provided at the bottom of the saw seat, the sawing device further comprising an auxiliary roller provided with a sawing groove directly below the saw disk, a front feed roller and a rear feed roller forming a rolling support with the front and rear ends of the pressure foot, wherein the sawing groove matches the saw disk; the top surfaces of the rear feed roller, the auxiliary roller, and the front feed roller are flush, and the three are supported on the bottom surface of the aerogel felt in sequence along the forward direction of the aerogel felt, wherein the transmission speed of the front feed roller is greater than the transmission speed of the rear feed roller.

[0007] According to a specific embodiment and preferred aspect of the present invention, the presser foot includes a flat plate portion, a front plate and a rear plate located at the front and rear ends of the flat plate portion, wherein the flat plate portion is provided with an escape groove for the saw blade to pass through, and rear feed rollers and front feed rollers are respectively distributed at the front and rear ends of the flat plate portion. Based on the formation of the presser foot, a flattening limit is formed, thereby reducing the slitting deviation rate that may be caused during the sawing process.

[0008] Preferably, the rear plate is arranged to be tilted backward and upward from the rear end of the flat plate, and the front plate is arranged to be tilted forward and upward from the front end of the flat plate. The tilted manner forms a certain movement guide for the edge felt cloth to enter and exit the presser foot, thereby improving the flatness control during slitting.

[0009] According to a specific implementation and preferred aspect of the present invention, the avoidance groove is opened from the middle of the rear end plate to ensure sufficient avoidance space and facilitate the groove forming of the presser foot.

[0010] Preferably, the left and right sides of the flat plate are bent outward and upward from the side to form a left folding plate and a right folding plate. The upward extension protection of the side can prevent the felt cloth from rubbing against the side, thereby improving the sawing quality.

[0011] According to another specific embodiment and preferred aspect of the present invention, the transmission speed of the front feed roller is 1.5 to 2.5 times the transmission speed of the rear feed roller. Generally, the best effect is achieved when the transmission speed is 1.6 to 1.8 times. Of course, too fast a transmission speed will increase the probability of sawing deviation, while too low a transmission speed will completely fail to achieve the effect of smoothing the sawing.

[0012] According to another specific embodiment and preferred aspect of the present invention, the auxiliary roller is a roller that rotates freely about its own axis. That is, the auxiliary roller is an unpowered roller and moves in the direction of motion of the saw disc. Therefore, the auxiliary roller can also eliminate some of the applied force and does not affect the speed of the felt moving forward and backward.

[0013] According to another specific embodiment and preferred aspect of the present invention, the adjustment assembly includes a downwardly extending slide rail, a slide seat slidably mounted on the slide rail, and a power device for driving the slide seat to move up and down, wherein the slide seat is fixedly connected to the saw seat. The upward and downward adjustment is achieved by the movement formed by the slide rail and the slide seat.

[0014] Preferably, there are at least two slide rails, arranged parallel to each other; the slide seat is provided with a seat body that matches each slide rail, wherein each slide rail is provided with at least two seat bodies. In short, based on the sliding connection of multiple seat bodies, movement deviation during cutting is avoided. Specifically, the two slide rails are arranged symmetrically about the saw disc.

[0015] In some specific embodiments, the power device is a cylinder, which can also be a hydraulic cylinder or an electric cylinder.

[0016] In addition, the saw disc assembly also includes a saw cover mounted on the saw seat and covering the saw disc. Safety protection is formed based on the cover to reduce the risk of sawing.

[0017] Due to the implementation of the above technical solution, the utility model has the following advantages compared with the prior art:

[0018] In the existing sawing process, the supporting use of the pressure foot is conducive to the tension control of the sawing position. However, after the pressure foot is used, the sawing exerts a downward pressure on the felt cloth. If the transmission speed between cutting and the aerogel felt to be cut is kept at the same speed, it is likely to cause the cutting displacement. Therefore, it is impossible to achieve the shortcomings of high-quality and high-efficiency sawing. The utility model designs the sawing device of the aerogel felt as a whole, and cleverly solves the shortcomings and defects of the existing technology. After adopting the sawing device of the aerogel felt, based on the flattening of the pressure foot and the cooperation of the lower auxiliary roller for sawing, Then, under the transmission of the speed difference formed by the front and rear feed rollers, the felt cloth and the saw disk are synchronously and in the same direction to form sawing. Therefore, on the one hand, the utility model is based on the pressure foot and the auxiliary roller and the front and rear feed rollers that form the transmission speed difference, so that the sawing process is carried out under the tension of forward pulling, which not only offsets the deformation force of the felt cloth caused by sawing, but also the forward pulling force formed is more conducive to the forward movement of the felt cloth; on the other hand, the sawing is formed based on the synchronous and same direction movement of the felt cloth and the saw disk, which not only has high sawing efficiency, but also reduces the sawing difficulty coefficient, and reduces the probability of offset during sawing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the structure of the aerogel felt sawing device of this embodiment;

[0020] Figure 2 for Figure 1 Middle main view schematic diagram;

[0021] Figure 3 for Figure 1 Schematic diagram of the local structure;

[0022] Wherein: 1. saw disc assembly; 10. saw seat; 11. saw disc; 12. motor; 13. saw cover; 14. presser foot; 140. flat plate; 141. front plate; 142. rear plate; 143. left folding plate; 144. right folding plate; q. avoidance groove;

[0023] 2. Adjustment assembly; 20. Slide rail; 21. Slide seat; 210. Seat body; 22. Power device;

[0024] 3. Auxiliary roller;

[0025] 4. Front feed roller;

[0026] 5. Back feed roller.

[0027] M. Aerogel felt. DETAILED DESCRIPTION

[0028] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0029] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0031] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0032] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it can mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher horizontal height than the second feature. When a first feature is "below," "below," or "below" a second feature, it can mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower horizontal height than the second feature. It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there can be an intermediate element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there can be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0033] like Figures 1 to 3 As shown, the sawing device of the aerogel felt of this embodiment includes a sawing disc assembly 1 located above the aerogel felt transmission path, an adjusting assembly 2 for driving the sawing disc assembly 1 to move up and down to adjust the sawing amount, an auxiliary roller 3, a front feed roller 4 and a rear feed roller 5.

[0034] The saw disc assembly 1 includes a saw base 10, a saw disc 11, a motor 12, a saw cover 13, and a pressure foot 14. The saw disc 11 rotates and cuts along the width of the aerogel felt M. The motor 12 and saw disc 11 are mounted on opposite sides of the saw base 10. The saw cover 13 covers the upper portion of the saw disc 11. The pressure foot 14 is mounted on the side of the saw base 10 near the motor 12. The pressure foot 14 includes a flat plate 140, a front plate 141 located at the front and rear ends of the flat plate 140, and a rear plate 142 located at the front and rear ends of the flat plate 140. The flat plate 140 is provided with a clearance groove q for the saw disc 11 to pass through. The rear feed roller 5 and the front feed roller 4 are located at the front and rear ends of the flat plate 140, respectively. The pressure foot 14 forms a flattening limit, reducing the potential slitting deviation rate during the sawing process. The rear plate 142 is arranged to rise in an arc from the rear end of the flat plate 140, extending backward and upward. The front plate 141 is arranged to rise in an arc from the front end of the flat plate 140, extending forward and upward. The edge of the felt is tilted to allow it to enter and exit the presser foot, creating a certain motion guide to improve smoothness control during slitting. A clearance groove q is provided in the middle of the rear end plate 142. This ensures sufficient clearance and facilitates the slotting of the presser foot. Left and right folding plates 143 and 144 are formed on the left and right sides of the flat plate 140, respectively, by bending outward and upward from the sides. This upward extension of the side protects the felt from rubbing against the side, improving cutting quality.

[0035] The auxiliary roller 3 is positioned directly below the saw disc 11 and is provided with a sawing groove, which mates with the saw disc 11. The top surfaces of the rear feed roller 5, the auxiliary roller 3, and the front feed roller 4 are flush, and the three are supported in sequence on the bottom surface of the aerogel felt along the forward direction of the aerogel felt. The transmission speed of the front feed roller 4 is greater than that of the rear feed roller 5. In some specific embodiments, the transmission speed of the front feed roller is 1.5 to 2.5 times that of the rear feed roller. Generally, the best effect is achieved when the transmission speed is 1.6 to 1.8 times. Of course, too fast a transmission speed will increase the probability of sawing deviation, while too low a transmission speed will completely fail to support the sawing. At the same time, the auxiliary roller 3 is a roller that rotates freely about its own axis. In other words, the auxiliary roller is an unpowered roller and maintains a counter-rotating motion with the saw disc. Therefore, the auxiliary roller can also eliminate some of the applied force and will not affect the speed of the felt moving forward and backward.

[0036] In some specific embodiments, the adjustment assembly 2 includes a downwardly extending slide rail 20, a slide seat 21 slidably mounted on the slide rail 20, and a power device 22 for driving the slide seat 21 to move up and down, wherein the slide seat 21 is fixedly connected to the saw seat 10. The up and down lifting adjustment is achieved through the movement formed by the slide rail and the slide seat.

[0037] In this example, there are at least two slide rails 20, arranged parallel to each other. The slide base 21 is provided with a seat body 210 that matches each slide rail 20, with two seat bodies 210 provided on each slide rail 20. In short, the sliding connection of multiple seat bodies prevents motion deviation during cutting. Specifically, the two slide rails 20 are symmetrically arranged about the saw disc 11. In some embodiments, the power unit 22 is a pneumatic cylinder. Alternatively, a hydraulic cylinder or an electric cylinder may be used.

[0038] In summary, after adopting the sawing device of the aerogel felt, based on the flattening of the pressure foot, the lower auxiliary roller is used for cooperative sawing, and then the felt cloth and the saw disk are synchronously and unidirectionally moved to form sawing under the transmission of the speed difference formed by the front and rear feed rollers. Therefore, on the one hand, the utility model is based on the pressure foot and the auxiliary roller and the front and rear feed rollers that form the transmission speed difference, so that the sawing is carried out under the tension of forward pulling during the sawing process, which not only offsets the deformation force of the felt cloth caused by sawing, but also the formed front pulling force is more conducive to the forward movement of the felt cloth; on the other hand, based on the synchronous and unidirectional movement of the felt cloth and the saw disk to form sawing, not only the sawing efficiency is high, but also the sawing difficulty coefficient is reduced, and the probability of offset generated during sawing is reduced; the third aspect is based on the formation of the pressure foot to form a flattening restriction, thereby reducing the slitting offset rate that may be caused during the sawing process; at the same time, the edge of the felt cloth is moved in and out of the pressure foot in a warping manner to form a certain movement guide to improve the flatness control during slitting. In addition, it is ensured that there is enough avoidance space, and at the same time It is also convenient for the grooving and forming of the presser foot, and the upward extension protection of the side can avoid the felt cloth from scratching the side, thereby improving the sawing quality; fourthly, the transmission speed of the front feed roller is 1.5 to 2.5 times the transmission speed of the rear feed roller, and generally the best effect is 1.6 to 1.8 times. Of course, too fast a transmission speed will increase the probability of sawing deviation. As for too low a transmission speed, it will not play the role of supporting the sawing; fifthly, the auxiliary roller is an unpowered roller and keeps moving in the opposite direction of the movement direction of the saw disk. Therefore, the auxiliary roller can also eliminate part of the force and will not affect the speed of the forward and backward moving felt cloth; sixthly, it is based on the sliding connection of multiple seat bodies to avoid movement deviation during cutting movement. Specifically, the two slide rails are symmetrically arranged about the saw disk, that is, the up and down lifting adjustment is realized in the movement formed by the slide rails and the slide seat; the power device is a cylinder, of course it can also be a hydraulic cylinder or an electric cylinder; seventhly, safety protection is formed based on the tool cover to reduce the risk of sawing.

[0039] The above detailed description of the utility model is intended to enable people familiar with the technology in this field to understand the content of the utility model and implement it. It is not intended to limit the scope of protection of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the scope of protection of the utility model.

Claims

1. A device for sawing aerogel felt, comprising a sawing disc assembly located above a transmission path of the aerogel felt, and an adjustment assembly for driving the sawing disc assembly up and down to adjust the sawing amount, wherein the sawing disc assembly comprises a saw seat, a saw disc, and a motor, and is characterized in that: A pressure foot is provided at the bottom of the saw seat for the lower part of the saw disk to pass through, and the sawing device also includes an auxiliary roller with a sawing groove formed therein and arranged directly below the saw disk, and a front feed roller and a rear feed roller forming a rolling support with the front and rear ends of the pressure foot, wherein the sawing groove matches the saw disk; the top surfaces of the rear feed roller, the auxiliary roller and the front feed roller are flush, and the three are supported on the bottom surface of the aerogel felt in sequence along the forward direction of the aerogel felt, wherein the transmission speed of the front feed roller is greater than the transmission speed of the rear feed roller, and the rotation directions formed by the front feed roller, the rear feed roller and the saw disk are the same.

2. The aerogel felt sawing device according to claim 1, characterized in that: The presser foot includes a flat plate portion, a front end plate and a rear end plate located at the front and rear ends of the flat plate portion, wherein the flat plate portion is provided with an avoidance groove for the saw disk to pass through, and the rear feed roller and the front feed roller are correspondingly distributed at the front and rear ends of the flat plate portion.

3. The aerogel felt sawing device according to claim 2, characterized in that: The rear end plate is arranged to tilt backward and upward in an arc shape from the rear end of the flat plate portion; the front end plate is arranged to tilt forward and upward in an arc shape from the front end of the flat plate portion.

4. The aerogel felt sawing device according to claim 3, characterized in that: The avoidance groove is opened from the middle part of the rear end plate.

5. The aerogel felt sawing device according to claim 2, characterized in that: The left and right sides of the flat plate portion are respectively bent outward and upward from the side edges to form a left folding plate and a right folding plate.

6. The aerogel felt sawing device according to claim 1, characterized in that: The transmission speed of the front feeding roller is 1.5 to 2.5 times the transmission speed of the rear feeding roller.

7. The aerogel felt sawing device according to claim 1, characterized in that: The auxiliary roller is a roller that rotates freely around its own axis.

8. The aerogel felt sawing device according to claim 1, characterized in that: The adjusting assembly includes a downwardly extending slide rail, a slide seat slidably mounted on the slide rail, and a power device for driving the slide seat to move up and down, wherein the slide seat is fixedly connected to the saw seat.

9. The aerogel felt sawing device according to claim 8, characterized in that: There are at least two slide rails, which are arranged parallel to each other; the slide seat is provided with a seat body matching each slide rail, wherein each slide rail is provided with at least two seat bodies; and / or the power device is a cylinder, a hydraulic cylinder or an electric cylinder.

10. The aerogel felt sawing device according to claim 1, characterized in that: The sawing disc assembly further comprises a saw cover which is mounted on the saw seat and covers the saw disc.

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