Feeding system and process for felted paving

Abstract

The application discloses a feeding system and process of a felt paving layer, and the system comprises a paving unit, a feeding guide unit and a transfer receiving platform. On one hand, based on the change and lengthening of the transmission path formed by the arc-shaped transmission feeding surface with an unchanged interval, the feeding needs of paving layers with different thicknesses and different layers are increased, and the transition of the horizontal transmission surface and the downward inclined transmission surface is adopted to increase the adjustment range of the inclined stacking angle, so that the practicability of the paving layer feeding is greatly improved. On the other hand, under the premise of meeting the transmission of the feeding roller, based on the layout of the roller groove and the upper and lower guide pieces, the channel formed by the upper and lower distribution guide modules is leveled with the transmission surface of the feeding roller for guiding, so that the misalignment or local stacking of the paving layer is avoided, and the gas is discharged to the roller groove at the same time of the feeding extrusion, the internal looseness of the paving layer caused by the gas when entering and leaving the feeding roller is reduced, and the original layering state of the paving layer is maintained to be sent into the needle punching channel.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of new fibers and composite material preparation, and particularly relates to a feeding system for felt laying layers. BACKGROUND

[0002] At present, the production line of aerogel felt (felt cloth or pre-oxidized fiber felt) usually consists of pretreatment equipment, feeding equipment, needle punching equipment, heat setting equipment and edge cutting and rolling equipment, wherein, before the fiber web formed by pretreatment enters the needle punching, multiple fiber web sheets need to be stacked to form a laying layer, and then the laying layer is fed into the needle punching channel formed by the upper needle template and the lower needle template through the feeding roller, and then the needle punching equipment is used for up and down puncture.

[0003] However, in the actual operation process, the following technical defects exist:

[0004] 1) Most manufacturers use inclined stacking of laying webs for horizontal pushing type feeding, however, based on the change requirements of the number of laying webs and the height of laying webs, if the transmission path is changed, it is difficult to meet the use requirements by only changing the inclination angle of the web layer, which brings great inconvenience to the actual feeding;

[0005] 2) During the feeding of the laying web layer into the needle punching equipment, due to the front and rear and up and down multiple direction forces generated by the feeding roller, the laying web layer is relatively dispersed, and in addition to the recovery of bulkiness, the surface fiber sheet is easily warped, therefore, the laying web layer entering the upper and lower needle plate is likely to be stacked unevenly or locally stacked, which causes uneven thickness during needle punching, seriously affecting the forming quality of the felt. SUMMARY

[0006] The purpose of the present application is to overcome the shortcomings of the prior art, and to provide an improved felt laying layer feeding system.

[0007] The present application also relates to a felt laying layer feeding process.

[0008] To achieve the above-mentioned purpose, the present application adopts the following scheme:

[0009] A feeding system of felt laying layer, comprising a laying unit and a feeding guide unit, wherein the laying unit comprises an output conveyor belt group and a connecting conveyor belt group, the feeding guide unit comprises an upper feeding roller and a lower feeding roller arranged oppositely, in particular, the connecting conveyor belt group comprises an upper connecting conveyor belt and a lower connecting conveyor belt moving oppositely and conveying the laying layer between the upper feeding roller and the lower feeding roller, wherein a connecting channel is formed between the upper connecting conveyor belt and the lower connecting conveyor belt, and the connecting channel gradually decreases along the feeding direction; the output conveyor belt group comprises a first endless belt formed with a horizontal conveying surface and a downwardly inclined conveying surface, and a second endless belt arranged at the inclined end of the first endless belt and capable of adjusting the inclined angle and height, wherein the second endless belt connects the first endless belt and the lower connecting conveyor belt, the inclined conveying surface of the first endless belt, the conveying surface of the second endless belt and the conveying surface of the lower connecting conveyor belt form a same-direction and upwardly open arc-shaped feeding conveying surface, and a plurality of fiber webs are sequentially stacked on the feeding conveying surface in a forwardly inclined manner along the front-rear feeding direction, so that the fiber webs enter the connecting channel in the same number of layers; a plurality of roller grooves are arranged on the circumferences of the upper feeding roller and the lower feeding roller respectively, and the roller grooves are spaced along the lengths of the feeding rollers, and the feeding guide unit further comprises an upper guide piece and a lower guide piece, wherein the upper guide piece comprises an upper roller sleeve arranged in the roller groove of the upper feeding roller, and an upper guide module formed on the upper roller sleeve and capable of abutting against an upper needle template, and the bottom surface of the upper guide module is flush with the bottom surface of the upper feeding roller; the lower guide piece comprises a lower roller sleeve arranged in the roller groove of the lower feeding roller, and a lower guide module formed on the lower roller sleeve and capable of abutting against a lower needle template, wherein the top surface of the lower guide module is flush with the top surface of the lower feeding roller, and as the upper feeding roller and the lower feeding roller rotate oppositely, the upper feeding roller and the lower feeding roller rotate freely in the upper roller sleeve and the lower roller sleeve respectively, and the upper guide module and the lower guide module abut against the upper needle template and the lower needle template respectively, so that a guide channel is formed between the bottom surfaces of the upper guide modules and the top surfaces of the lower guide modules; the feeding system further comprises a transfer platform arranged between the connecting channel and the feeding channel formed by the upper feeding roller and the lower feeding roller.

[0010] Preferably, the input end and the output end of the first endless belt are arranged in an up-down adjusting manner. Based on the height adjustment, further assistance is provided for laying webs with different heights and layers.

[0011] Further, two pull rods are arranged at the two shaft ends of the input end and the output end respectively, and a power device is further arranged above the first endless belt to drive the pull rods to move up and down. There are many ways to drive the pull rods to move up and down, and in some specific embodiments, the power device is a winch, wherein the traction end of the winch is fixedly connected with the upper end of the pull rod. The winch is a conventional steel wire winch.

[0012] According to a specific implementation and preferred aspect of the present application, the first endless belt, the upper and lower connection transmission belts are all endless tracks; the second endless belt is an endless track or an endless belt. Based on the endless track transmission, not only the relative resistance is provided to facilitate the stacking of the webbing layers, but also the slippage is avoided during the transmission. Of course, the partial endless belt can also be used for transmission to increase the transmission efficiency.

[0013] Preferably, the endless track comprises an endless track body and anti-skid track links formed on the endless track body.

[0014] According to another specific implementation and preferred aspect of the present application, the connection output ends of the upper and lower connection transmission belts are vertically aligned; in the orthographic projection of the own width, the connection input end of the lower connection transmission belt is located in front of the connection input end of the upper connection transmission belt. The connection is first performed by the lower connection transmission belt, so that the webbing of any thickness can enter the connection channel.

[0015] Preferably, the connection input ends of the upper and lower connection transmission belts are respectively rotationally adjusted around the connection output ends to change the opening size of the connection channel. In order to meet the needs of the connection and extrusion of the webbing of different thicknesses.

[0016] Further, the second endless belt is vertically adjustable and rotationally adjustable around the shaft end close to the first endless belt. The connection of the first endless belt and the lower connection transmission belt is based on the angle and height adjustment of the second endless belt.

[0017] According to another specific implementation and preferred aspect of the present application, the second endless belt is installed on a frame, the frame is rotationally and vertically adjustable from the front end and is installed on a base, the frame is rotationally adjustable from the rear end and is vertically adjustable on the base, wherein a rotating arm is arranged at the rear end of the frame, a connecting arm and a telescopic rod moving along the front-rear direction are arranged on the base, the rotating arm and the connecting arm are rotationally connected from the end, the top end of the telescopic rod is fixed to the rotational connection point of the rotating arm and the connecting arm, and during the telescopic movement of the telescopic rod, the rotating arm and the connecting arm relatively lift or lower the rear end of the frame. First, since the webbing layer looks thick but has a very light quality, the rotation and lifting adopted do not need to bear heavy pressure; second, the angle and height formed are small adjustments with strong controllability; finally, based on the position of the telescopic rod, the frame and the base can be relatively limited, and the combination of the lifting and rotation of the front end also facilitates the implementation (the bottom is the telescopic rod, the top is a rotating seat rotationally installed on the top of the telescopic rod, and the rotating seat is fixed to the front end of the frame).

[0018] Preferably, the upper roller sleeve and the upper guide module are integrally formed; the lower roller sleeve and the lower guide module are integrally formed. Based on the integral forming, the machining is facilitated, and the plastic or rubber used for integral injection molding greatly reduces the part use cost.

[0019] According to another specific implementation and preferred aspect of the present application, the upper roller sleeve comprises an upper sleeve ring with an opening formed at the top and capable of being sleeved in the roller groove of the upper feeding roller, upper ears formed at the open end of the upper sleeve ring, and an upper connecting body fixedly connecting the two upper ears. The installation of the upper roller sleeve is performed in a similar manner to the assembly of a hoop, which is not only convenient but also reduces the deformation rate of the upper roller sleeve, thereby enabling the upper feeding roller to rotate relative to the upper roller sleeve, i.e., the needle feeding guide can be implemented without affecting the transmission of the feeding roller.

[0020] Preferably, the upper guide module comprises an upper extension body with a horizontal bottom surface and extending to one side along the tangential direction of the upper sleeve ring, and an upper die tip formed at the outer end of the upper extension body and having a width that narrows, wherein the upper die tip abuts against the upper needle template. The strength is increased by the upper extension body with different shapes (different widths), and the perfect butt joint with the upper needle template is achieved by the abutment of the upper die tip.

[0021] In some specific implementations, the end of the upper needle template forms an upper matching gap, and the upper die tip matches the upper matching gap; or the upper extension body and the upper die tip form the upper matching gap, and the end of the upper needle template matches the upper matching gap. Regardless of which implementation method, the stability of the abutment is further improved by matching, thereby avoiding changes in the guide channel due to external forces.

[0022] According to another specific implementation and preferred aspect of the present application, the lower roller sleeve comprises a lower sleeve ring with an opening formed at the bottom and capable of being sleeved in the roller groove of the lower feeding roller, lower ears formed at the open end of the lower sleeve ring, and a lower connecting body fixedly connecting the two lower ears. The installation of the lower roller sleeve is performed in a similar manner to the assembly of a hoop, which is not only convenient but also reduces the deformation rate of the lower roller sleeve, thereby enabling the lower feeding roller to rotate relative to the lower roller sleeve, i.e., the needle feeding guide can be implemented without affecting the transmission of the feeding roller.

[0023] Preferably, the lower guide module comprises a lower extension body with a horizontal top surface and extending to one side along the tangential direction of the lower sleeve ring, and a lower die tip formed at the outer end of the lower extension body and having a width that narrows, wherein the lower die tip abuts against the lower needle template. The strength is increased by the lower extension body with different shapes (different widths), and the perfect butt joint with the upper needle template is achieved by the abutment of the lower die tip.

[0024] In some specific implementations, the end of the lower needle template forms a lower matching gap, and the lower die tip matches the lower matching gap; or the lower extension body and the lower die tip form the lower matching gap, and the end of the lower needle template matches the lower matching gap. Regardless of which implementation method, the stability of the abutment is further improved by matching, thereby avoiding changes in the guide channel due to external forces.

[0025] Preferably, the upper feeding roller and the lower feeding roller are arranged symmetrically in the up-down direction; the upper guide piece and the lower guide piece are arranged symmetrically in the up-down direction. In this way, the guiding and stressed positions of the laying layer are kept in alignment, and the probability of disorder of the laying layer is reduced.

[0026] In addition, the upper ridge groove and the lower ridge groove are arranged on the circumferences of the upper feeding roller and the lower feeding roller respectively. In this regard, the ridge groove needs to have two functions: 1. air exhaust; 2. anti-skid. In regard to the air exhaust, because the laying layer still has a bulkiness, once the air exhaust cannot be performed in the extrusion, the gas will be released at the two sides of the feeding roller, which will increase the probability of disorder of the laying layer; in regard to the anti-skid, this is very simple, that is, to reduce the contact surface to improve the forward pushing force, and generally, the anti-skid is achieved by the net pattern or the convex ridge.

[0027] Preferably, the cross section of the transfer platform is in the shape of T, wherein the top surface of the T-shaped platform forms a transfer support surface, and the downwardly curved protective folded edges are formed on the front and rear sides of the transfer support surface.

[0028] Another technical solution of the present application is a feeding process of a felt laying layer, which adopts the feeding system described above, and includes the following steps:

[0029] S1. Formation and transmission of the laying layer

[0030] Based on the inclined transmission surface of the first annular belt, the transmission surface of the second annular belt, and the transmission surface of the lower connection transmission belt, the three form a same-direction transmission path in the form of an open upward arc-shaped feeding surface, and the multiple layers of fiber meshes are sequentially stacked on the feeding surface in the forward and backward feeding direction to keep the fiber meshes in the same number of layers entering the connection channel, so that the laying layer is continuously supplied.

[0031] S2. Guiding and feeding of the laying layer

[0032] The laying layer is transmitted forward to the space between the upper feeding roller and the lower feeding roller, and the upper feeding roller and the lower feeding roller are freely rotated in the upper roller sleeve and the lower roller sleeve respectively, and the upper guide module and the lower guide module are kept in close contact with the upper needle plate and the lower needle plate respectively, so that the bottom surface of the multiple upper guide modules and the top surface of the multiple lower guide modules form a guide channel, the laying layer is kept in translation and low dislocation rate in the guide channel and enters between the upper and lower needle plates to complete the feeding of the laying layer.

[0033] Thanks to the above technical and equipment solutions, the present application has the following advantages compared with the prior art:

[0034] In existing web-laying processes, horizontal pushing feeding is achieved using an inclined stacking method. However, given the varying requirements for the number and height of web layers, simply changing the tilt angle of the web layers without altering the transmission path is insufficient to meet the needs, causing significant inconvenience in actual feeding. Furthermore, during the feeding of the web layers into the needle-punching equipment, the forces generated by the feeding rollers in multiple directions (front-back and up-down) cause the web layers to become relatively dispersed. Combined with the recovery of bulkiness, this easily leads to the surface fiber sheets lifting. Therefore, the web layers entering the upper and lower needle plates are highly likely to be unevenly stacked or experience localized stacking. The needle-punching process can lead to uneven thickness, severely affecting the forming quality of the felt. This application addresses these shortcomings by comprehensively designing the feeding system for the felt layer, cleverly resolving these deficiencies. Using this feeding system, firstly, the inclined transmission surface of the first annular belt, the transmission surface of the second annular belt, and the transmission surface of the lower connecting conveyor belt form a unidirectional, upward-facing arc-shaped feeding surface. Multiple layers of fiber mesh are stacked sequentially on this feeding surface, tilted forward along the feeding direction, ensuring the same number of layers enter the receiving channel, thus achieving continuous supply of the felt layer. Secondly, The web layer is conveyed forward between the upper and lower feed rollers. The upper and lower feed rollers rotate freely within their respective upper and lower roller sleeves, maintaining the upper and lower guide modules against the upper and lower needle templates. This creates a guide channel between the bottom surfaces of the upper guide modules and the top surfaces of the lower guide modules. The web layer moves along this guide channel with a low misalignment rate, entering between the upper and lower needle templates to complete the web layer feeding. Therefore, compared to existing technologies, this invention, on the one hand, utilizes a constant spacing and a variable and lengthened transmission path formed by an upward-facing arc-shaped transmission feeding surface to increase the number of layers and thicknesses. The feeding of the web layer requires the transition between the horizontal and downward-sloping transmission surfaces to increase the adjustment range of the tilt stacking angle, thereby significantly improving the practicality of web layer feeding. On the other hand, while meeting the requirements of the feeding roller transmission, based on the layout of the roller groove and the upper and lower guide plates, the channel formed by the upper and lower distributed guide modules is flush with the feeding roller transmission surface for guidance, avoiding the occurrence of misalignment or local stacking of the web layer. At the same time, the feeding and extrusion can discharge gas into the roller groove, reducing the loosening of the web layer inside the feeding roller caused by gas, and keeping the web layer in its original stacked state as it is fed into the needle punching channel. Attached Figure Description

[0035] Figure 1 This is a front view schematic diagram of the feeding system for the felt paving layer in this embodiment;

[0036] Figure 2 for Figure 1 A front view diagram of the first annular zone (enlarged);

[0037] Figure 3 Fig. 1 is a schematic view of the main view of the feeding and guiding unit according to the present application; Figure 1 Fig. 2 is a schematic view of the main view of the main transfer belt group according to the present application;

[0038] Figure 4 Fig. 3 is a schematic view of the perspective structure of the feeding and guiding unit according to the present application; Figure 1 Fig. 4 is a schematic view of the main view of the upper and lower guiding pieces according to the present application;

[0039] Figure 5 Fig. 5 is a schematic view of the main view of the feeding roller according to the present application; Figure 4 Fig. 6 is a schematic view of the main view of the guiding part according to the present application;

[0040] Figure 6 Fig. 7 is a schematic view of the left view of the feeding roller according to the present application; Figure 5 Fig. 8 is a schematic view of the main view of the guiding part according to the present application;

[0041] Figure 7 Fig. 9 is a schematic view of the main view of the upper and lower guiding pieces according to the present application; Figure 4 Fig. 10 is a schematic view of the structure of the feeding roller according to the present application;

[0042] Figure 8 Fig. 11 is a schematic view of the structure of the guiding part according to the present application; Figure 4 Fig. 12 is a schematic view of the main view of the upper and lower guiding pieces according to the present application;

[0043] Figure 9 Fig. 13 is a schematic view of the main view of the upper and lower guiding pieces according to the present application; Figure 8 Fig. 14 is a schematic view of the main view of the upper and lower guiding pieces according to the present application;

[0044] Wherein: ①, the laying unit; 1, the output transfer belt group; 11, the first endless belt; 11a, the horizontal transmission surface; 11b, the inclined transmission surface; 11c, the input end; 11d, the output end; 12, the second endless belt; g, the pull rod; q, the power device; 12b, 21b, the transmission surface; 2, the connection transfer belt group; 20, the upper connection transfer belt; 21, the lower connection transfer belt; J, the connection channel; 9, the bracket; A, the base; B, the rotating arm; E, the connecting arm; F, s, the telescopic rod; z, the rotating base; m, the transmission feeding surface; p, the fiber web; e1, the endless belt body; e2, the anti-skid shoe; G, the bracket; h1, the arc-shaped groove; h2, the sliding base;

[0045] ②, the feeding and guiding unit; 3, the upper feeding roller; 3a, the upper ridge groove; 4, the lower feeding roller; 4a, the lower ridge groove; g, the roller groove; 5, the upper guiding piece; 50, the upper roller sleeve; 500, the upper sleeve ring; 501, the upper ear; 502, the upper connecting body; 51, the upper guiding module; 510, the upper extension body; 511, the upper module tip; 6, the lower guiding piece; 60, the lower roller sleeve; 600, the lower sleeve ring; 601, the lower ear; 602, the lower connecting body; 61, the lower guiding module; 610, the lower extension body; 611, the lower module tip; 7, the upper needle template; 70, the upper matching notch; 8, the lower needle template; 80, the lower matching notch; D, the guiding channel; Z, the needle punching channel; W, the feeding channel;

[0046] ③, the transfer supporting platform;

[0047] M, the laying layer; p, the fiber web. Detailed Implementation

[0048] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0049] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0050] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0051] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0052] In this application, unless otherwise expressly specified and limited, "above" or "below" a second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of a second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" a second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature. It should be noted that when an element is referred to as "fixed to" or "set on" another element, it can be directly on the other element or there may be an intermediate element present. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element present. The terms "vertical," "horizontal," "above," "below," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible embodiments.

[0053] like Figure 1 As shown, the feeding system for the felt paving layer in this embodiment includes a web-laying unit ①, a feeding guide unit ②, and a transfer receiving platform ③. The web-laying unit ① includes an output conveyor belt group 1 and a connecting conveyor belt group 2. The feeding guide unit ② includes an upper feeding roller 3 and a lower feeding roller 4 arranged vertically and facing each other, an upper guide plate 5 and a lower guide plate 6. The web-laying layer M is formed by stacking fiber web sheets. Then, it is output through the output conveyor belt group 1 and the connecting conveyor belt group 2, and transferred through the transfer receiving platform ③ to feed the web-laying layer into the feeding channel W formed by the upper feeding roller 3 and the lower feeding roller 4. Then, the guide channel D formed by the upper guide plate 5 and the lower guide plate 6 sends the web-laying layer M to the needle-punching channel Z formed by the upper needle template 7 and the lower needle template 8.

[0054] Combination Figure 2 and Figure 3As shown, the adapter transmission belt group 2 includes an upper adapter transmission belt 20 and a lower adapter transmission belt 21 moving towards each other and transmitting the laying layer M between the upper feeding roller 3 and the lower feeding roller 4, wherein the upper adapter transmission belt 20 and the lower adapter transmission belt 21 form a joint channel J therebetween, and the joint channel J gradually decreases along the feeding direction; the output transmission belt group 1 includes a first endless belt 11 formed with a horizontal transmission surface 11a and a downwardly inclined transmission surface 11b, and a second endless belt 12 located at the inclined end of the first endless belt 11 and capable of adjusting the inclined angle and height, wherein the second endless belt 12 connects the first endless belt 11 and the lower adapter transmission belt 21, the inclined transmission surface 11b of the first endless belt 11, the transmission surface 12a of the second endless belt 12, and the transmission surface 21a of the lower adapter transmission belt 21 form a same-direction and upwardly open arc-shaped transmission feeding surface m, and the multi-layer fiber web pieces are sequentially stacked on the feeding surface m in a forwardly inclined manner along the front-rear feeding direction, so that the fiber web pieces enter the joint channel J with the same number of layers.

[0055] In some embodiments, the input end 11c and the output end 11d of the first endless belt 11 are adjusted up and down, respectively. Based on the height adjustment, further assistance is provided for laying layers with different heights and numbers. Further, two pull rods g are arranged at the two shaft ends of the input end 11c and the output end 11d, respectively, and a power device q is further arranged above the first endless belt 11 to drive the pull rods g to move up and down. There are many ways to drive the pull rods g to move up and down, and in some embodiments, the power device q is a winch, wherein the traction end of the winch q is fixedly connected with the upper end of the pull rod g. The winch is a conventional steel wire winch. The second endless belt 12 is located at the inclined end of the first endless belt 11 and is capable of adjusting the inclined angle, and is also capable of adjusting the height thereof. Specifically, the second endless belt 12 is capable of ascending and descending and is capable of rotating around the shaft end close to the first endless belt 11, that is, the second endless belt is connected between the first endless belt and the lower adapter transmission belt based on the angle and height adjustment of the second endless belt.

[0056] In this example, the inclined transmission surface 11b of the first endless belt 11, the transmission surface 12b of the second endless belt 12, and the transmission surface 22b of the lower adapter transmission belt 21 form a same-direction and upwardly open arc-shaped transmission feeding surface m, and the multi-layer fiber web pieces p are sequentially stacked on the feeding surface in a forwardly inclined manner along the front-rear feeding direction, so that the fiber web pieces p enter the joint channel J with the same number of layers. The first endless belt 11, the upper adapter transmission belt 20, and the lower adapter transmission belt 21 are all endless tracks; the second endless belt 12 is an endless track or an endless belt. Based on the transmission of the endless track, not only is the relative resistance provided to facilitate the stacking of the laying layers, but also slipping during the transmission is avoided. Of course, part of the endless belt can also be used for transmission to increase the transmission efficiency. The endless track includes an endless track body e1 and anti-skid track pieces e2 formed on the endless track body e1.

[0057] In some embodiments, the second annular belt 12 is mounted on the frame 9, which is rotatable and vertically movable at the front end and is rotatable and vertically movable at the rear end on the base A. The rear end of the frame 9 is provided with a rotating arm B, and the base A is provided with a connecting arm E and a telescopic rod F movable in the front-rear direction. The rotating arm B and the connecting arm E are rotatably connected at the ends, and the top end of the telescopic rod F is fixed to the rotating connection point of the rotating arm B and the connecting arm E. During the telescopic movement of the telescopic rod F, the rotating arm B and the connecting arm E are raised or lowered relative to the rear end of the frame 9. First, because the laid layer looks thick but has a very light weight, the rotation and lifting do not need to bear heavy pressure. Second, the formed angle and height are small adjustments with strong controllability. Finally, the position of the telescopic rod can limit the relative position of the frame and the base, and the combination of lifting and rotation at the front end is also convenient to implement (the bottom of the front end of the frame 9 is also a telescopic rod s, and the top is a rotating seat z rotatably mounted on the top of the telescopic rod s, wherein the rotating seat z is fixed to the front end of the frame 9).

[0058] In addition, the output ends of the upper and lower splicing transmission belts 20 and 21 are vertically aligned, and in the orthographic projection of their own widths, the input end of the lower splicing transmission belt 21 is located in front of the input end of the upper splicing transmission belt 20. The splicing is first performed by the lower splicing transmission belt, so that the laid layer of any thickness can enter the splicing channel. The input ends of the upper and lower splicing transmission belts 20 and 21 are rotatably adjusted around the output ends to change the opening size of the splicing channel J, so as to meet the needs of splicing and extrusion of laid layers of different thicknesses. Specifically, an arc-shaped groove h1 is arranged on the corresponding frame G, a sliding seat h2 is arranged on the input ends of the upper and lower splicing transmission belts 20 and 21, and based on the movement of the sliding seat h2 in the arc-shaped groove h1, an external connecting piece is used for relative locking.

[0059] In combination Figure 4 to Figure 9 As shown in the drawings, a plurality of roller grooves g are arranged on the circumferences of the upper and lower feeding rollers 3 and 4, respectively, and the plurality of roller grooves g are spaced apart along the length directions of the feeding rollers. The splicing and guiding transmission device includes upper and lower guiding pieces 5 and 6.

[0060] Specifically, the upper guiding piece 5 includes an upper roller sleeve 50 sleeved in the roller groove g of the upper feeding roller 3 and an upper guiding module 51 formed on the upper roller sleeve 50 and capable of abutting against the upper needle template 7. The bottom surface of the upper guiding module 51 is flush with the bottom surface of the upper feeding roller 3.

[0061] In the example, the upper roller sleeve 50 and the upper guide module 51 are integrally formed. Based on the integral forming, the processing is facilitated, and the plastic or rubber is used for the integral injection molding, which greatly reduces the part cost. In some specific embodiments, the upper roller sleeve 50 includes an upper sleeve ring 500 which is formed with an opening at the top and can be sleeved in the roller groove g of the upper feeding roller 3, upper ears 501 which are formed at the open end of the upper sleeve ring 500, and an upper connecting body 502 which fixedly connects the two upper ears 501. The upper roller sleeve is installed in a manner similar to the assembly of a hoop, which is not only convenient but also reduces the deformation rate of the upper roller sleeve, thereby enabling the upper feeding roller to rotate relative to the upper roller sleeve, that is, the needle feeding guide can be implemented without affecting the transmission of the feeding roller. The upper guide module 51 includes an upper extension body 510 which is horizontally formed at the bottom and extends to one side along the tangential direction of the upper sleeve ring 500, and an upper mold tip 511 which is formed at the outer end of the upper extension body 510 and has a narrowing width, wherein the upper mold tip 511 abuts against the upper needle template 7. The upper extension body with different shapes (different widths) increases the strength, and the abutment of the upper mold tip realizes perfect butt joint with the upper needle template. In some specific embodiments,

[0062] In some specific embodiments, the upper needle template 7 is formed with an upper matching notch 70 at the end, and the upper mold tip 511 is fitted with the upper matching notch 70 (or the upper extension body and the upper mold tip form the upper matching notch, and the upper needle template is fitted with the upper matching notch at the end). Regardless of the implementation method, the fitting further improves the stability of the abutment, thereby avoiding the change of the guide channel due to external force.

[0063] Specifically, the lower guide piece 6 includes a lower roller sleeve 60 which is sleeved in the roller groove g of the lower feeding roller 4, and a lower guide module 61 which is formed on the lower roller sleeve 60 and can abut against the lower needle template 8, and the bottom surface of the lower guide module 61 is flush with the bottom surface of the lower feeding roller 4.

[0064] In this example, the lower roller sleeve 60 and the lower guide module 61 are integrally formed. Based on the integral forming, the processing is facilitated, and the plastic or rubber is used for integral injection molding, which greatly reduces the part cost. In some embodiments, the lower roller sleeve 60 includes a lower sleeve ring 600 which forms an opening at the bottom and can be sleeved in the roller groove g of the lower feeding roller 4, a lower ear 601 formed at the open end of the lower sleeve ring 600, and a lower connecting body 602 which fixedly connects the two lower ears 601. The installation of the lower roller sleeve is similar to the assembly of a hoop, which is not only convenient but also reduces the deformation rate of the lower roller sleeve, thereby enabling the lower feeding roller to rotate relative to the lower roller sleeve, i.e., the needle feeding guide can be implemented without affecting the transmission of the feeding roller. The lower guide module 61 includes a lower extension body 610 which is horizontal on the top surface and extends to one side along the tangent direction of the lower sleeve ring 600, and a lower die tip 611 which is formed at the outer end of the lower extension body 610 and has a narrowing width, wherein the lower die tip 611 abuts against the lower needle template 8. The upper extension body of different shapes (different widths) increases the strength, and the abutment of the upper die tip realizes perfect butt joint with the upper needle template. In some embodiments,

[0065] In some embodiments, the end of the lower needle template 8 forms a lower matching gap 80, and the lower die tip 611 fits with the lower matching gap 80 (or the lower extension body and the lower die tip form the lower matching gap, and the end of the lower needle template fits with the lower matching gap). Regardless of the implementation method, the fitting further improves the stability of the abutment, thereby avoiding changes in the guide channel due to external forces.

[0066] In this example, the upper feeding roller 3 and the lower feeding roller 4 are arranged symmetrically above and below; the upper guide piece 5 and the lower guide piece 6 are arranged symmetrically above and below. This makes the guide and stress position of the laying layer remain aligned, reducing the probability of laying layer disorder. At the same time, as the upper feeding roller 3 and the lower feeding roller 4 rotate towards each other, the upper feeding roller 3 and the lower feeding roller 4 are freely rotated in the upper roller sleeve 50 and the lower roller sleeve 60 respectively, and the upper guide module 51 and the lower guide module 61 abut against the upper needle template 7 and the lower needle template 8 respectively to form a guide channel D between the bottom surface of the plurality of upper guide modules 51 and the top surface of the plurality of lower guide modules 61.

[0067] In addition, the upper feeding roller 3 and the lower feeding roller 4 are respectively provided with upper and lower ridge grooves 3a and 4a in the circumferential direction. In this regard, the ridge groove needs to have two functions: 1. Exhaust; 2. Anti-skid. For exhaust, because the laying layer still has loft, if exhaust cannot be performed during extrusion, the gas will be released on both sides of the feeding roller, which will increase the probability of laying layer disorder; for anti-skid, it is very simple, which is to reduce the contact surface to improve the forward pushing force. Generally, such as anti-skid with net pattern or anti-skid with convex ridge.

[0068] The cross section of the transfer platform 3 is in T shape, wherein the top surface of the T shape forms a transfer support surface, and the downward bending protective flanges are formed on the front and rear sides of the transfer support surface.

[0069] In summary, the implementation steps of the embodiment include the following:

[0070] S1, formation and transmission of the web layer

[0071] Based on the three of the inclined transmission surface of the first annular belt, the transmission surface of the second annular belt, and the transmission surface of the lower connection transmission belt, the same direction and the transmission path of the open upward arc-shaped transmission feeding surface are formed, the multi-layer fiber web is sequentially stacked in the forward inclined state along the front and rear feeding direction to make the fiber web enter the connection channel with the same number of layers, and the continuous supply of the web layer is realized;

[0072] S2, guiding and feeding of the web layer

[0073] The web layer is transmitted forward to between the upper feeding roller and the lower feeding roller, and the upper feeding roller and the lower feeding roller are freely rotated in the upper roller sleeve and the lower roller sleeve respectively, and the upper guide module and the lower guide module are kept in close contact with the upper needle plate and the lower needle plate respectively to form a guide channel between the bottom surface of the plurality of upper guide modules and the top surface of the plurality of lower guide modules, the web layer is kept in translation and low misregistration rate to enter between the upper and lower needle plates to complete the feeding of the web layer.

[0074] Therefore, one aspect of the present application is based on the change and lengthening of the transmission path formed by the upward opening arc-shaped transmission feeding surface with invariant pitch, increasing the feeding requirements of different thickness and different layer paving layers, and the transition of the horizontal transmission surface and the downward inclined transmission surface increases the adjustment range of the inclined stacking angle to greatly improve the practicability of the paving layer feeding; another aspect is based on the layout of the roller groove and the upper and lower guide pieces under the premise of meeting the feeding roller transmission, the channel formed by the upper and lower distribution guide modules is flush with the transmission surface of the feeding roller, which avoids the occurrence of misalignment or local stacking of the paving layer, and at the same time, the gas is discharged to the roller groove while the feeding is extruded, reducing the internal looseness of the paving layer entering and exiting the feeding roller caused by the gas, and keeping the paving layer in the original stacked state to enter the needle punching channel; the third aspect is based on the lifting adjustment height output of the pull rod, further increasing the adjustment range of the inclination angle, and the power device is a winch, and the steel wire is used for traction to implement the price increase, which is convenient to operate and low in cost; the transmission based on the annular track not only provides relative resistance to facilitate the stacking of the paving layer, but also avoids slipping during the transmission process. Of course, part of the annular belt can also be used for transmission to increase the transmission efficiency; the fourth aspect is connected by the lower connection transmission belt first, so that no matter how thick the paving layer is, it can enter the connection channel, and the connection input ends of the upper and lower connection transmission belts are respectively adjusted and set by rotating around the connection output end to change the size of the connection channel opening to meet the different thickness paving layer connection extrusion requirements; the fifth aspect is based on the angle and height adjustment of the second annular belt to connect the first annular belt and the lower connection transmission belt. Specifically, the second annular belt is installed on the frame seat, the frame seat is installed on the base by rotating and lifting from the front end, and the frame seat is lifted on the base by rotating from the rear end. A rotating arm is provided at the rear end of the frame seat, a connecting arm and a telescopic rod moving along the front and rear directions are provided on the base, the rotating arm and the connecting arm are rotatably connected from the end, the top end of the telescopic rod is fixed to the rotating connection point of the rotating arm and the connecting arm, and during the telescopic movement of the telescopic rod, the rotating arm and the connecting arm are lifted or lowered relative to the rear end of the frame seat. That is, first, the paving layer looks thick, but the quality is very light, so the rotation and lifting do not need to bear heavy pressure; second, the formed angle and height are small adjustments with strong controllability; finally, based on the position of the telescopic rod, the frame seat and the base can be relatively limited, and the combination of lifting and rotating at the front end also facilitates implementation (the bottom is the telescopic rod, the top is the rotating seat installed on the top of the telescopic rod, and the rotating seat is fixed to the front end of the frame seat); the sixth aspect is based on one-piece molding, which is convenient to process, and the use of plastic or rubber for one-piece injection molding greatly reduces the cost of parts; the roller sleeve is installed in a way similar to the assembly of a hoop, which is not only convenient but also reduces the deformation rate of the roller sleeve, thereby enabling the pressure roller to rotate relative to the roller sleeve, that is, without affecting the transmission of the pressure roller, the needle punching feeding guide can be implemented;The strength is increased by the extension body with different shapes (different widths), the perfect butt joint with the needle mold plate is realized by the resistance of the mold tip, and no matter which implementation method is used, the stability of the resistance is further improved by the kiss, so that the change of the guide channel caused by external force is avoided; the upper and lower pressing rollers are symmetrically arranged in the seventh aspect; the upper and lower guide pieces are symmetrically arranged, so that the guide and stress position of the laying layer remain aligned, and the probability of disorder of the laying layer is reduced; in the eighth aspect, the rib and groove need to have two functions: 1. Exhaust; 2. Anti-skid, for exhaust, because the laying layer still has bulkiness, once the exhaust cannot be performed during extrusion, the gas will be released on both sides of the inlet and outlet pressing roller, which will increase the probability of disorder of the laying layer; for anti-skid, it is very simple, that is, to reduce the contact surface to improve the forward pushing force, generally, such as net pattern anti-skid or convex rib anti-skid.

[0075] The above examples are only for illustrating the technical concept and characteristics of the present application, the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A feeding system for a felt paving layer, comprising a web-laying unit and a feeding guide unit, wherein the web-laying unit includes an output conveyor belt group and a connecting conveyor belt group, and the feeding guide unit includes an upper feeding roller and a lower feeding roller arranged vertically and facing each other, characterized in that: The connecting conveyor belt group includes an upper connecting conveyor belt and a lower connecting conveyor belt that move in opposite directions and convey the web layer between the upper feed roller and the lower feed roller. A receiving channel is formed between the upper connecting conveyor belt and the lower connecting conveyor belt, and the receiving channel gradually decreases in size along the feeding direction. The output conveyor belt group includes a first annular belt with a horizontal conveying surface and a downwardly inclined conveying surface, and a second annular belt located at the inclined end of the first annular belt and capable of adjusting the inclination angle and height. The second annular belt connects the first annular belt and the lower connecting conveyor belt. The inclined conveying surface of the first annular belt, the conveying surface of the second annular belt, and the conveying surface of the lower connecting conveyor belt form a co-directional, upward-opening arc-shaped conveying feeding surface. Multiple layers of fiber web are stacked sequentially on the feeding surface with a forward inclination along the front and rear feeding directions, so that the fiber web enters the receiving channel with the same number of layers. The upper and lower feeding rollers are each provided with multiple roller grooves in their circumferential direction, and the multiple roller grooves are spaced apart along the length direction of each feeding roller. The feeding guide unit also includes an upper guide plate and a lower guide plate. The upper guide plate includes an upper roller sleeve fitted inside the roller groove of the upper feeding roller and an upper guide module formed on the upper roller sleeve and capable of abutting against the upper needle template. The bottom surface of the upper guide module is flush with the bottom surface of the upper feeding roller. The lower guide plate includes a lower roller fitted inside the roller groove of the lower feeding roller. A lower guide module is formed on the lower roller sleeve and can abut against the lower needle template. The top surface of the lower guide module is flush with the top surface of the lower feed roller. As the upper feed roller and the lower feed roller rotate in opposite directions, the upper feed roller and the lower feed roller rotate freely in the upper roller sleeve and the lower roller sleeve, respectively, and keep the upper guide module and the lower guide module abutting against the upper needle template and the lower needle template so that a guide channel is formed between the bottom surface of the plurality of upper guide modules and the top surface of the plurality of lower guide modules. The feeding system also includes a transfer receiving platform disposed between the receiving channel and the feeding channel formed by the upper feeding roller and the lower feeding roller.

2. The feeding system for the felt paving layer according to claim 1, characterized in that: The input and output ends of the first annular belt are respectively adjusted up and down; and / or, the input and output ends of the first annular belt are symmetrically arranged, and the upper and lower layers of the first annular belt are symmetrically arranged; and / or, the first annular belt, the upper connecting conveyor belt and the lower connecting conveyor belt are all annular tracks; the second annular belt is an annular track or an annular belt.

3. The feeding system for the felt paving layer according to claim 1, characterized in that: The upper and lower connecting conveyor belts have their output terminals aligned vertically; in the orthographic projection of their width, the input terminal of the lower connecting conveyor belt is located in front of the input terminal of the upper connecting conveyor belt. And / or, the input terminals of the upper and lower connecting conveyor belts are respectively adjusted to rotate around the output terminal to change the size of the opening of the connecting channel.

4. The feeding system for the felt paving layer according to claim 1, characterized in that: The second annular belt is mounted on the frame, which is mounted on the base and rotates and moves up and down from the front end. The frame rotates and moves up and down on the base from the rear end around the front end. A rotating arm is provided at the rear end of the frame, and a connecting arm and a telescopic rod that moves in the front-back direction are provided on the base. The rotating arm and the connecting arm are rotatably connected from the end. The top end of the telescopic rod is fixed to the rotation connection point of the rotating arm and the connecting arm. During the telescopic movement of the telescopic rod, the rotating arm and the connecting arm raise or lower the rear end of the frame relative to each other.

5. The feeding system for the felt paving layer according to claim 1, characterized in that: The upper roller sleeve and the upper guide module are integrally formed; the lower roller sleeve and the lower guide module are integrally formed; the upper roller sleeve includes an upper ring with an opening at the top that can be fitted into the roller groove of the upper feed roller, an upper ear formed at the open end of the upper ring, and an upper connecting body that fixes the two upper ears together; the lower roller sleeve includes a lower ring with an opening at the bottom that can be fitted into the roller groove of the lower feed roller, a lower ear formed at the open end of the lower ring, and a lower connecting body that fixes the two lower ears together.

6. The feeding system for the felt paving layer according to claim 5, characterized in that: The upper guide module includes an upper extension body with a horizontal bottom surface extending to one side along the tangent direction of the upper collar, and an upper die tip formed at the outer end of the upper extension body with a narrower width, wherein the upper die tip abuts against the upper needle template; and / or, the lower guide module includes a lower extension body with a horizontal top surface extending to one side along the tangent direction of the lower collar, and a lower die tip formed at the outer end of the lower extension body with a narrower width, wherein the lower die tip abuts against the lower needle template.

7. The feeding system for the felt paving layer according to claim 6, characterized in that: The upper needle template end forms an upper matching notch, and the upper die tip matches the upper matching notch; or, the upper extension body and the upper die tip form an upper matching notch, and the upper needle template end matches the upper matching notch; the lower needle template end forms a lower matching notch, and the lower die tip matches the lower matching notch; or the lower extension body and the lower die tip form a lower matching notch, and the lower needle template end matches the lower matching notch.

8. The feeding system for the felt paving layer according to claim 1, characterized in that: The upper and lower feeding rollers are arranged symmetrically in the vertical direction; the upper and lower guide plates are arranged symmetrically in the vertical direction; and / or, upper and lower ridge grooves are respectively provided in the circumferential direction of the upper and lower feeding rollers.

9. The feeding system for the felt paving layer according to claim 1, characterized in that: The cross-section of the transfer platform is T-shaped.

10. A feeding process for a felt paving layer, characterized in that: It employs the feeding system described in any one of claims 1 to 9, and includes the following steps: S1. Formation and transmission of the web layer Based on the inclined transmission surface of the first ring belt, the transmission surface of the second ring belt, and the transmission surface of the lower connecting transmission belt forming a co-directional arc-shaped transmission feeding surface with the transmission path opening upward, multiple layers of fiber mesh are stacked sequentially on the feeding surface while maintaining a forward inclination along the front and rear feeding direction, so that the fiber mesh enters the receiving channel with the same number of layers, thereby achieving continuous supply of the web layer. S2, Guiding and feeding of the mesh layer The web layer is conveyed forward to the space between the upper and lower feed rollers. The upper and lower feed rollers rotate freely within the upper and lower roller sleeves, respectively, and keep the upper and lower guide modules against the upper and lower needle templates. This forms a guide channel between the bottom surfaces of the multiple upper guide modules and the top surfaces of the multiple lower guide modules. The web layer moves along the guide channel and enters the space between the upper and lower needle templates with a low misalignment rate to complete the web layer feeding.

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