A spreading device and a cloth laying machine comprising the same

Abstract

The application provides a spreading device and a cloth laying machine comprising the same. The spreading device comprises: a conveying belt mechanism arranged in a recessed accommodating area on a workbench of the cloth laying machine in a first direction, the conveying belt mechanism comprising a conveying belt for driving cloth to spread, a plurality of through holes being uniformly distributed on the conveying belt, and a pressure sensor for obtaining the pressure of the cloth on the conveying belt; an air inlet of a negative pressure device being in communication with a plurality of air outlets arranged on a bottom plate of the recessed accommodating area; and a cloth laying machine controller for obtaining the kinetic friction between the cloth and the conveying belt according to the pressure of the cloth on the conveying belt, and starting the negative pressure device if the obtained kinetic friction is less than a corresponding kinetic friction threshold. The cloth laying machine comprises the workbench, the controller and the spreading device. According to the application, the problem that the cloth laying machine using a conveying belt to provide main spreading power is prone to delay due to the material of the cloth can be solved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of cloth spreading machine, and more particularly, to a cloth spreading device and a cloth spreading machine comprising the same. BACKGROUND

[0002] In the related art, a kind of cloth spreading machine mainly uses conveying belt to spread cloth on its workbench for next cutting process. Specifically, in the process of cloth spreading of cloth spreading machine, conveying belt drives cloth to spread on the workbench of cloth spreading machine in predetermined direction based on dynamic friction between itself and cloth. However, if the unit area weight of cloth is small and / or the dynamic friction coefficient between cloth and conveying belt is small due to low roughness of cloth, the dynamic friction between conveying belt and cloth is often not enough to make cloth move synchronously with conveying belt without delay, i.e. the movement of cloth has hysteresis relative to the movement of conveying belt, or even cloth cannot move with conveying belt. Since cloth cutting mechanism and conveying belt work in linkage, the asynchronization in movement of cloth and conveying belt, i.e. cloth spreading delay, will directly affect the cutting accuracy of cloth. SUMMARY

[0003] The present application aims to solve the problem that the existing cloth spreading machine using conveying belt to provide main spreading power is prone to cloth spreading delay due to cloth material factors.

[0004] To achieve the above-mentioned purpose, the present application provides a cloth spreading device and a cloth spreading machine comprising the same.

[0005] According to the first aspect of the present application, a cloth spreading device is provided, which is applied to a cloth spreading machine, the cloth spreading machine comprising a workbench and a controller;

[0006] The cloth spreading device comprises:

[0007] a conveying belt mechanism arranged in a recessed accommodation area on the workbench in a first direction, the conveying belt mechanism comprising a conveying belt for driving cloth to spread, a plurality of through holes uniformly distributed on the conveying belt, and a pressure sensor for acquiring the pressure of the cloth on the conveying belt;

[0008] a negative pressure device, the air inlet of the negative pressure device being in communication with a plurality of air outlets arranged on the bottom plate of the recessed accommodation area at the same time;

[0009] The controller is used to acquire the dynamic friction between the cloth and the conveying belt according to the acquired pressure of the cloth on the conveying belt, and if the dynamic friction is less than the corresponding dynamic friction threshold, the negative pressure device is started.

[0010] Optionally, the conveying belt mechanism further comprises a first driving assembly and a second driving assembly.

[0011] The first driving assembly comprises a first transmission shaft penetrating through two side walls of the recessed accommodating area at two ends respectively;

[0012] The second driving assembly comprises a second transmission shaft penetrating through two side walls of the recessed accommodating area at two ends respectively;

[0013] The two side walls of the recessed accommodating area are opposite in a second direction, and the second direction is perpendicular to the first direction;

[0014] The first transmission shaft and the second transmission shaft are arranged opposite in the first direction, and the conveying belt is arranged around the first transmission shaft and the second transmission shaft.

[0015] Optionally, the first driving assembly further comprises a first rotary driver and a second rotary driver;

[0016] The two ends of the first transmission shaft respectively exceed the two side walls of the recessed accommodating area, and are respectively in transmission connection with the output end of the first rotary driver and the output end of the second rotary driver;

[0017] And / or,

[0018] The second driving assembly further comprises a third rotary driver and a fourth rotary driver;

[0019] The two ends of the second transmission shaft respectively exceed the two side walls of the recessed accommodating area, and are respectively in transmission connection with the output end of the third rotary driver and the output end of the fourth rotary driver.

[0020] Optionally, the number of the pressure sensors is multiple, and the multiple pressure sensors are arranged at the central position of the conveying belt in the second direction and are distributed along the extension direction of the conveying belt, and the second direction is perpendicular to the first direction.

[0021] Optionally, the negative pressure device comprises a negative pressure host, multiple air guide pipes and a multi-air pipe joint;

[0022] A plurality of protruding air outlet structures are arranged on the bottom plate of the recessed accommodating area, air outlets of the plurality of air outlet structures are respectively communicated with air inlets of the plurality of air guide pipes, and air outlets of the plurality of air guide pipes are connected to an air inlet of the negative pressure host through the multi-air pipe joint.

[0023] According to the second aspect of the present application, a cloth spreading machine is provided, which comprises a workbench, a controller and any one of the cloth spreading devices.

[0024] Optionally, the cloth spreading device further comprises:

[0025] A cloth feeding roller mechanism is arranged on the workbench and upstream of the conveyor belt, and is configured to guide the cloth onto the conveyor belt.

[0026] Optionally, the cloth spreading device further comprises two limiting side stops which are identical in structure and mirror-imaged in a second direction perpendicular to the first direction.

[0027] The limiting side stops are configured to limit and smooth the edges of the cloth flowing out of the cloth feeding roller mechanism and into the conveyor belt.

[0028] Optionally, the two limiting side stops are configured to have adjustable spacing in the second direction.

[0029] The limiting side stops comprise a baffle plate, at least two rollers arranged on the baffle plate, and a plurality of steam output holes.

[0030] The at least two rollers are distributed along the first direction and sequentially from top to bottom, the edges of the cloth are wrapped around the at least two rollers and in contact with the baffle plate, and the steam output holes are configured to smooth the edges of the cloth flowing out of the downstream rollers among the at least two rollers.

[0031] Optionally, the two limiting side stops are realized to have adjustable spacing in the second direction based on two L-shaped support bodies.

[0032] The support bodies are divided into vertical parts and extendable horizontal parts, the vertical parts of the two support bodies are arranged on the upper edges of the two side walls of the recessed accommodating area respectively so that the horizontal parts of the two support bodies are arranged oppositely, and the front ends of the horizontal parts are connected to the outer side surfaces of the corresponding baffle plates.

[0033] And / or, the plurality of steam output holes are correspondingly a plurality of steam nozzles arranged on the outer side surfaces of the baffle plates, and the steam input ends of the steam nozzles are connected to a steam generating device.

[0034] The cloth spreading device has the following advantages:

[0035] The cloth spreading device comprises a conveyor belt mechanism and a negative pressure device. Specifically, the conveyor belt mechanism is arranged in a recessed accommodating area on a workbench of a cloth spreading machine along a first direction, and comprises a conveyor belt configured to drive the cloth to spread, a plurality of through holes uniformly distributed on the conveyor belt, and a pressure sensor configured to obtain the pressure of the cloth on the conveyor belt. The air inlet of the negative pressure device is connected to a plurality of air outlets arranged on the bottom plate of the recessed accommodating area. The cloth spreading machine controller is configured to obtain the dynamic friction force between the cloth and the conveyor belt according to the obtained pressure of the cloth on the conveyor belt, and to turn on the negative pressure device if the dynamic friction force is less than a corresponding dynamic friction force threshold.

[0036] In the process that the spreading device is used for the cloth laying machine to lay cloth, the cloth laying machine controller acquires the dynamic friction force between the cloth and the conveying belt in real time based on the pressure sensor, if it is detected that the dynamic friction force between the cloth and the conveying belt is less than the minimum dynamic friction force that can make the cloth move synchronously with the conveying belt, the negative pressure equipment is started to form a certain negative pressure in the recessed containing area on the workbench of the cloth laying machine, and then the cloth is attracted by the negative pressure. After the cloth is attracted by the negative pressure, the pressure of the cloth on the conveying belt is the sum of the gravity of the cloth itself and the negative pressure attraction, and as the negative pressure attraction of the cloth increases, the pressure of the cloth on the conveying belt also increases, and the dynamic friction force between the cloth and the conveying belt also increases. When the dynamic friction force between the cloth and the conveying belt increases to the corresponding minimum friction force, the cloth and the conveying belt can move synchronously. Therefore, by using the spreading device, the problem that the cloth laying machine using the conveying belt to provide the main spreading power is prone to cause the cloth laying delay due to the material factors of the cloth can be effectively solved.

[0037] The cloth laying machine of the present application belongs to the same general inventive concept as the above-mentioned spreading device, and has at least the same beneficial effects as the above-mentioned spreading device, which will not be repeated here.

[0038] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0039] The present application can be better understood by reference to the following description taken in conjunction with the accompanying drawings, in which like reference numerals are used to indicate identical or similar components in all views.

[0040] Figure 1 A structural schematic diagram of a spreading device according to an embodiment of the present application is shown;

[0041] Figure 2 A layout schematic diagram of a conveying belt mechanism on a workbench according to an embodiment of the present application is shown;

[0042] Figure 3 A distribution schematic diagram of a pressure sensor on a conveying belt according to an embodiment of the present application is shown;

[0043] Figure 4 A structural schematic diagram of a cloth laying machine according to an embodiment of the present application is shown;

[0044] Figure 5 A structural schematic diagram of a support body according to an embodiment of the present application is shown;

[0045] Figure 6 A structural schematic diagram of a limiting edge stop in a first perspective according to an embodiment of the present application is shown;

[0046] Figure 7 Fig. 2 shows a structural schematic diagram of the limiting edge stop in a second perspective according to an embodiment of the present application;

[0047] Figure 8 Fig. 3 shows a limiting schematic diagram of the limiting edge stop on the cloth edge according to an embodiment of the present application. DETAILED DESCRIPTION

[0048] In order to enable a person skilled in the art to more fully understand the technical solutions of the present application, in the following, exemplary embodiments of the present application will be described more fully and in detail with reference to the accompanying drawings. Obviously, one or more of the embodiments of the present application described below are only one or more of the specific manners in which the technical solutions of the present application can be implemented, and are not exhaustive. It should be understood that the technical solutions of the present application can be implemented in other manners belonging to the same general inventive concept without being limited by the exemplary described embodiments. Based on one or more embodiments of the present application, all other embodiments obtained by a person skilled in the art without creative labor should belong to the scope of protection of the present application.

[0049] Embodiment: Figure 1 Fig. 1 shows a structural schematic diagram of the spreading device according to an embodiment of the present application, Figure 2 Fig. 2 shows a layout schematic diagram of the conveying belt mechanism on the workbench according to an embodiment of the present application, Figure 3 Fig. 3 shows a distribution schematic diagram of the pressure sensor on the conveying belt according to an embodiment of the present application.

[0050] With reference to Figures 1-3 , the spreading device according to an embodiment of the present application is applied to a cloth laying machine, which comprises a workbench 100 and a controller;

[0051] The spreading device according to an embodiment of the present application comprises:

[0052] a conveying belt mechanism 200 arranged in a recessed accommodating area on the workbench 100 in a first direction, the conveying belt mechanism 200 comprising a conveying belt 210 for driving the cloth to spread, a plurality of through holes 220 being uniformly distributed on the conveying belt 210, and a pressure sensor 230 for acquiring the pressure of the cloth on the conveying belt 210;

[0053] a negative pressure device, an air inlet of the negative pressure device being in communication with a plurality of air outlets 110 arranged on a bottom plate of the recessed accommodating area;

[0054] The controller is configured to acquire the dynamic friction force between the cloth and the conveying belt 210 according to the acquired pressure of the cloth on the conveying belt 210, and to start the negative pressure device if the dynamic friction force is less than a corresponding dynamic friction force threshold.

[0055] Specifically, in the embodiment of the present application, since the roughness of the conveying belt 210 is certain, the kinetic friction between the cloth and the conveying belt 210 is only related to the cloth type which determines the weight per unit area of the cloth and the roughness of the cloth. The controller of the cloth laying machine pre-stores a mapping relationship between different cloth types and corresponding kinetic friction threshold values, and the kinetic friction threshold value is the minimum kinetic friction that can make the cloth of the corresponding type move synchronously with the conveying belt. Before the cloth laying machine lays the cloth, the controller determines the kinetic friction threshold value according to the pre-obtained mapping relationship between different cloth types and corresponding kinetic friction threshold values and the type of the current cloth. During the process of laying the cloth by the cloth laying machine, the controller detects in real time whether the kinetic friction between the cloth and the conveying belt 210 is less than the corresponding kinetic friction threshold value, and if so, starts the negative pressure device to make the kinetic friction between the cloth and the conveying belt 210 not less than the kinetic friction threshold value, thereby realizing the synchronous movement of the cloth with the conveying belt 210 without delay.

[0056] Specifically, in the embodiment of the present application, the conveying surface of the conveying belt 210 in contact with the cloth is flush with the table surface of the workbench 100. In actual application, the conveying surface of the conveying belt 210 in contact with the cloth can also be slightly lower or slightly higher than the table surface of the workbench 100 according to actual needs.

[0057] Further, in the embodiment of the present application, the conveying belt mechanism 200 further comprises a first driving assembly and a second driving assembly;

[0058] The first driving assembly comprises a first transmission shaft 240 which is arranged to penetrate through two side walls of the recessed accommodating area at two ends respectively;

[0059] The second driving assembly comprises a second transmission shaft 250 which is arranged to penetrate through two side walls of the recessed accommodating area at two ends respectively;

[0060] The two side walls of the recessed accommodating area are opposite in a second direction, and the second direction is perpendicular to the first direction;

[0061] The first transmission shaft 240 and the second transmission shaft 250 are arranged opposite in the first direction, and the conveying belt 210 is arranged around the first transmission shaft 240 and the second transmission shaft 250.

[0062] Specifically, in the embodiment of the present application, the first direction is the length direction of the workbench 100, and the second direction is the width direction of the workbench 100.

[0063] Still further, in the embodiment of the present application, the first driving assembly further comprises a first rotary driver 260 and a second rotary driver 270;

[0064] The two ends of the first transmission shaft 240 respectively extend out of the two side walls of the recessed accommodation area and are respectively in transmission connection with the output end of the first rotary driver 260 and the output end of the second rotary driver 270.

[0065] The second driving assembly further comprises a third rotary driver 280 and a fourth rotary driver 290.

[0066] The two ends of the second transmission shaft 250 respectively extend out of the two side walls of the recessed accommodation area and are respectively in transmission connection with the output end of the third rotary driver 280 and the output end of the fourth rotary driver 290.

[0067] Specifically, in the embodiment of the present application, the first rotary driver 260, the second rotary driver 270, the third rotary driver 280 and the fourth rotary driver 290 are all controlled by the controller, under the control of the controller, the first rotary driver 260 and the second rotary driver 270 drive the first transmission shaft 240 to rotate correspondingly, and the third rotary driver 280 and the fourth rotary driver 290 drive the second transmission shaft 250 to rotate correspondingly, thereby driving the conveyor belt 210 to move in a loop.

[0068] Further, in the embodiment of the present application, the number of pressure sensors 230 is multiple, and the multiple pressure sensors 230 are all arranged at the central position of the conveyor belt 210 in the second direction and are distributed along the extension direction of the conveyor belt 210.

[0069] Specifically, in the embodiment of the present application, the pressure sensor 230 adopts a patch type pressure sensor.

[0070] Specifically, in the embodiment of the present application, the pressure sensor 230 can adopt a central and surrounding arrangement, that is, the multiple pressure sensors 230 are all arranged at the central position of the conveyor belt 210 in the second direction and are distributed along the extension direction of the conveyor belt 210, and in this arrangement, the multiple pressure sensors 230 form a three-dimensional array surrounding the conveyor belt 110. Of course, in actual application, the pressure sensor arrangement as shown in the figure can also be adopted, that is, four pressure sensors 230 are arranged centrally on the upward side of the conveyor belt 110 according to a predetermined interval, and this arrangement can ensure that at least one pressure sensor 230 is in contact with the material. Figure 3

[0071] Further, in the embodiment of the present application, the negative pressure device comprises a negative pressure host, multiple air guide pipes 310 and a multi-air pipe joint.

[0072] ​A plurality of gas outlet structures 120 are arranged on the bottom plate of the recessed accommodating area, gas outlets 110 of the plurality of gas outlet structures are respectively connected with air inlet of the plurality of air guide pipes 310, and air outlets of the plurality of air guide pipes 310 are connected with air inlets of the negative pressure host through the multi-air pipe joint.

[0073] Specifically, in the embodiment of the present application, the air outlet of the multi-air pipe joint is connected with the air inlet of the negative pressure host, the plurality of air inlets of the multi-air pipe joint are respectively connected with the air outlets of the plurality of air guide pipes 310. When the negative pressure host starts to pump air, the recessed accommodating area forms a negative pressure area, and the cloth on the conveying belt 210 is tightly attached to the conveying belt 210 under the action of atmospheric pressure, thereby increasing the dynamic friction between the cloth and the conveying belt 210.

[0074] Correspondingly, on the basis of the spreading device in the embodiment of the present application, the embodiment of the present application further provides a cloth laying machine.

[0075] Figure 4 Fig. 1 shows a structural schematic diagram of the cloth laying machine in the embodiment of the present application, Figure 5 Fig. 2 shows a structural schematic diagram of the support body in the embodiment of the present application, Figure 6 Fig. 3 shows a structural schematic diagram of the limiting edge stop in the first perspective view in the embodiment of the present application, Figure 7 Fig. 4 shows a structural schematic diagram of the limiting edge stop in the second perspective view in the embodiment of the present application, Figure 8 Fig. 5 shows a limiting schematic diagram of the limiting edge stop on the cloth edge in the embodiment of the present application. In the figure, Figure 6 and Figure 8 In the figure, the top structure of the baffle is shown.

[0076] With reference to Figures 4-8 , the cloth laying machine in the embodiment of the present application comprises a workbench 100, a controller and the aforementioned spreading device.

[0077] Further, the cloth laying machine in the embodiment of the present application further comprises:

[0078] A cloth conveying roller mechanism 400 is arranged on the workbench 100 and located upstream of the conveying belt 210, and is used to guide the cloth to the conveying belt 210.

[0079] Specifically, in the embodiment of the present application, the cloth conveying roller mechanism 400 comprises a cloth conveying roller assembly and a support, the cloth conveying roller assembly is suspended on the workbench 100 through the support, and the cloth in the cloth roll flows into the conveying belt 210 through the cloth conveying roller assembly.

[0080] Still further, the cloth laying machine in the embodiment of the present application further comprises two limiting edge stops 500 which are identical in structure and mirror-imaged arranged in the second direction;

[0081] The limiting edge block 500 is used for limiting and smoothing the edge of the cloth flowing out of the conveying roller mechanism 400 and flowing into the conveying belt 210.

[0082] Further, in the embodiment of the present application, the two limiting edge blocks 500 are arranged to be adjustable in the second direction.

[0083] The limiting edge block 500 comprises a baffle plate 510 and two rollers 520 and four steam output holes 530 arranged on the baffle plate 510.

[0084] The two rollers 520 are arranged along the first direction and sequentially from top to bottom. The edge 600 of the cloth is arranged around the two rollers 520 and in contact with the baffle plate 510. The steam output by the steam output holes 530 is used for smoothing the edge 600 of the cloth flowing out of the downstream roller among the two rollers 520.

[0085] Further, in the embodiment of the present application, the two limiting edge blocks 500 are arranged to be adjustable in the second direction based on two L-shaped support bodies 700.

[0086] The support body 700 is divided into a vertical part 710 and a telescopic horizontal part 720. The vertical parts 710 of the two support bodies 700 are respectively arranged on the upper edges of the two side walls of the recessed accommodating area so that the horizontal parts 720 of the two support bodies 700 are oppositely arranged. The front end 730 of the horizontal part 720 is connected to the outer side of the corresponding baffle plate 510.

[0087] Further, in the embodiment of the present application, four steam output holes 530 are arranged on the outer side of the baffle plate 510, and four steam nozzles 810 correspondingly arranged. The steam input end of the steam nozzle 810 is connected to a steam generating device through a steam pipe 820. The steam generating device is controlled by the controller of the cloth spreading machine.

[0088] Specifically, in the embodiment of the present application, the front end 730 of the horizontal part 720 is a telescopic end. The length of the horizontal part 720 is adjusted through the telescopic end.

[0089] Specifically, in the embodiment of the present application, the side edge structure of the baffle plate 510 is in abutment with the edge 600 of the cloth to limit the cloth. The two rollers 520 further limit the cloth arranged therearound. The edge 600 of the cloth flowing out of the roller 520 is smoothed at the steam output hole 530 by the action of the steam.

[0090] Specifically, in the embodiment of the present application, the steam nozzle 810 is arranged on the outer surface of the side edge structure of the baffle plate 510 and oppositely arranged with the corresponding steam output hole 530. The steam output by the steam generating device is expanded and accelerated at the steam nozzle 810 and then sprayed to the cloth through the steam output hole 530 to achieve the smoothing effect.

[0091] The cloth paving machine of the embodiment of the present application realizes the non-delay synchronous movement of the cloth with the conveying belt based on the cooperation of the cloth spreading device and the controller, so as to ensure the accuracy of the next cutting process; the cloth can be limited in the paving process by setting the limiting side stop to prevent the cloth from deviating beyond the predetermined range; the steam wrinkle removal of the limited cloth is realized by setting the steam spraying structure on the limiting side stop.

[0092] Although one or more embodiments of the present application have been described above, it should be understood by those of ordinary skill in the art that the present application can be implemented in any other forms without departing from the spirit and scope of the present application. Therefore, the above-described embodiments are illustrative rather than restrictive, and many modifications and substitutions are obvious to those of ordinary skill in the art without departing from the spirit and scope of the present application as defined by the appended claims.

Claims

1. A cloth laying machine comprising a worktable and a controller, characterized in that, The cloth paving machine further comprises a cloth spreading device, the cloth spreading device comprises: a conveying belt mechanism arranged in a recessed accommodating area on the workbench in a first direction, the conveying belt mechanism comprises a conveying belt for driving the cloth to spread, a plurality of through holes uniformly distributed on the conveying belt, and a pressure sensor for obtaining the pressure of the cloth on the conveying belt; a negative pressure device, an air inlet of the negative pressure device being in communication with a plurality of air outlets arranged on a bottom plate of the recessed accommodating area; the controller is configured to obtain the dynamic friction between the cloth and the conveying belt according to the pressure of the cloth on the conveying belt, and to start the negative pressure device if the dynamic friction is less than a corresponding dynamic friction threshold value; Since the roughness of the conveying belt is constant, the dynamic friction between the cloth and the conveying belt is only related to the type of cloth which determines the weight per unit area and the roughness of the cloth; the controller of the cloth paving machine pre-stores a mapping relationship between different types of cloth and corresponding dynamic friction threshold values, the dynamic friction threshold value being the minimum dynamic friction that can enable the cloth of the corresponding type to move synchronously with the conveying belt; before the cloth paving machine starts paving, the controller determines the dynamic friction threshold value according to the pre-obtained mapping relationship between different types of cloth and corresponding dynamic friction threshold values and the type of the current cloth; during the paving process of the cloth paving machine, the controller detects in real time whether the dynamic friction between the cloth and the conveying belt is less than the corresponding dynamic friction threshold value, and starts the negative pressure device if it is less than the dynamic friction threshold value, so that the dynamic friction between the cloth and the conveying belt is not less than the dynamic friction threshold value, thereby realizing the synchronous movement of the cloth with the conveying belt without delay; the number of pressure sensors is multiple, and the multiple pressure sensors are arranged at the central position of the conveying belt in a second direction and are spaced along the extension direction of the conveying belt, the second direction being perpendicular to the first direction; the cloth paving machine further comprises a cloth conveying roller mechanism arranged on the workbench upstream of the conveying belt and configured to guide the cloth onto the conveying belt; the cloth paving machine further comprises two limiting edge stops which are identical in structure and mirror-imaged in the second direction, the second direction being perpendicular to the first direction; the limiting edge stop is configured to limit and remove wrinkles of the edge of the cloth flowing out of the cloth conveying roller mechanism and flowing into the conveying belt; the two limiting edge stops are configured to have an adjustable spacing in the second direction; the limiting edge stop comprises a baffle, at least two rollers arranged on the baffle, and a plurality of steam output holes arranged on the baffle; the at least two rollers are distributed along the first direction and are sequentially distributed from top to bottom, the edge of the cloth is wrapped around the at least two rollers and in contact with the baffle, and the steam output holes output steam to remove wrinkles of the edge of the cloth flowing out of the downstream roller among the at least two rollers; the two limiting edge stops are configured to have an adjustable spacing in the second direction based on two L-shaped supporting bodies. The support body is divided into a vertical part and a telescopic horizontal part, the vertical parts of the two support bodies are arranged on the upper edges of the two side walls of the recessed accommodating area respectively so that the horizontal parts of the two support bodies are arranged oppositely, and the front ends of the horizontal parts are connected to the outer side surfaces of the corresponding baffles; And / or, a plurality of steam output holes are arranged on the outer side surface of the baffle, and a plurality of steam nozzles correspond to the steam output holes, and steam input ends of the steam nozzles are connected to a steam generating device.

2. The fabric layering machine of claim 1, wherein, The conveying belt mechanism further comprises a first driving assembly and a second driving assembly; The first driving assembly comprises a first transmission shaft which is arranged through the two side walls of the recessed accommodating area at two ends respectively; The second driving assembly comprises a second transmission shaft which is arranged through the two side walls of the recessed accommodating area at two ends respectively; The two side walls of the recessed accommodating area are opposite in a second direction, and the second direction is perpendicular to the first direction; The first transmission shaft and the second transmission shaft are arranged oppositely in the first direction, and the conveying belt is arranged around the first transmission shaft and the second transmission shaft.

3. The fabric layering machine of claim 2, wherein, The first driving assembly further comprises a first rotary driver and a second rotary driver; The two ends of the first transmission shaft respectively protrude out of the two side walls of the recessed accommodating area, and are in transmission connection with the output ends of the first rotary driver and the second rotary driver respectively; And / or, The second driving assembly further comprises a third rotary driver and a fourth rotary driver; The two ends of the second transmission shaft respectively protrude out of the two side walls of the recessed accommodating area, and are in transmission connection with the output ends of the third rotary driver and the fourth rotary driver respectively.

4. The fabric layering machine of claim 1, wherein, The negative pressure equipment comprises a negative pressure host, a plurality of air guide pipes and a multi-air pipe joint; A plurality of protruding air outlet structures are arranged on the bottom plate of the recessed accommodating area, air outlets of the plurality of air outlet structures are in communication with air inlets of the plurality of air guide pipes respectively, and air outlets of the plurality of air guide pipes are connected to an air inlet of the negative pressure host through the multi-air pipe joint.

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