Multi-layer cloth bonding device

Abstract

The utility model provides a multi-layer cloth bonding device which comprises a frame, and a jacking and bonding device used for bonding a cotton core and a bonding piece and an auxiliary conveying device used for driving the cotton core to move in an auxiliary mode are installed on the frame. The jacking and attaching device comprises a jacking assembly used for jacking the cotton core, a driving assembly used for providing driving force and a negative pressure roller assembly used for adsorbing the pasting piece and driving the pasting piece to rotate and operate, the jacking assembly, the driving assembly and the negative pressure roller assembly are connected with the frame, and the driving assembly is connected with the jacking assembly and the negative pressure roller assembly; the jacking assembly is located below the negative pressure roller assembly. According to the technical scheme, the problem that in the prior art, glue easily penetrates through cloth, and consequently the quality of the cloth is poor can be solved.

Description

Technical Field

[0001] This utility model relates to the field of fabric processing technology, and more specifically, to a multi-layer fabric bonding device. Background Technology

[0002] Composite fabric is a type of fabric made by combining two or more different materials through physical or chemical methods. It typically has multiple properties, such as waterproof, breathable, abrasion-resistant, and heat-insulating. It is widely used in clothing, outdoor equipment, home furnishings, and industrial materials. Generally, fabric bonding devices are used to bond multiple layers of fabric together.

[0003] For example, Chinese patent application CN111923570B discloses a bonding and positioning device for composite layer fabrics, including a bonding frame with a rectangular frame structure. The bonding frame has an input port and an output port at its two ends. A rectangular frame extends outward from the input port, and multiple spacers are installed parallel to each other on the rectangular frame. A fabric guide component is inserted into each connection port, and the fabric passes through the fabric guide component into the connection port. Multiple guide plates with cavity structures are installed on the inner side wall of the bonding frame corresponding to the connection port. Multiple glue outlets are connected to the outer side of the guide plates, and the outer side of the guide plates is connected to an external glue injection device through a glue tube. Pushing components are symmetrically installed on both sides of the bonding frame along the fabric conveying direction. Glue outlets that uniformly spray adhesive are set on the guide plates to spray adhesive onto the side of a single layer of fabric that needs to be bonded.

[0004] However, the adhesive sprayed from the bonding and positioning device of the composite fabric can easily penetrate the fabric, causing it to stick to the equipment or other parts, resulting in poor quality of the finished fabric. Utility Model Content

[0005] This invention provides a multi-layer fabric bonding device to solve the problem in the prior art where glue easily penetrates the fabric, resulting in poor fabric quality.

[0006] This utility model provides a multi-layer fabric bonding device, which includes a frame. The frame is equipped with a lifting bonding device for bonding a cotton core to an adhesive sheet and an auxiliary transport device for assisting in moving the cotton core. The lifting bonding device includes a lifting component for lifting the cotton core, a driving component for providing driving force, and a negative pressure roller assembly for adsorbing the adhesive sheet and driving the adhesive sheet to rotate. The lifting component, driving component, and negative pressure roller assembly are respectively disposed on the frame. The driving component is drivenly connected to the lifting component and the negative pressure roller assembly respectively. The lifting component is located below the negative pressure roller assembly.

[0007] Furthermore, the frame includes two supports, a front connecting plate, a front protective plate, a rear plate, and a top plate. The two supports are arranged parallel to each other. The front connecting plate is fixedly installed at the front end between the two supports. The front protective plate is fixedly installed above the supports and the front connecting plate. The rear plate is fixedly installed at the rear end of the supports. The top plate is fixedly installed at the upper end between the front protective plate and the rear plate. The outer side of the supports is connected to an auxiliary transport device. The rear end of the front connecting plate is connected to a lifting assembly. The rear end of the front protective plate is connected to a negative pressure roller assembly. A drive assembly is installed on the rear plate.

[0008] Furthermore, the lifting assembly includes two mounting plates, two mounting rods, a lifting shaft, a cam, and a connecting plate. The two mounting plates are arranged parallel to each other front to back. The two mounting rods pass through the left and right ends of the two mounting plates. The front and rear ends of the mounting rods are fixedly connected to the front connecting plate and the rear plate. The lifting shaft passes through the two mounting plates and is rotatably connected to the two mounting plates. The cam is fixedly installed on the outside of the lifting shaft. The connecting plate is fixedly installed on the lower end of the two mounting plates. The rear end of the lifting shaft is connected to the drive assembly.

[0009] Furthermore, the drive assembly includes a first motor and a synchronous pulley assembly. The synchronous pulley assembly consists of two synchronous pulleys and a synchronous belt. The first motor is fixedly mounted at the rear end of the rear plate. The output end of the first motor passes through the rear plate and is fixedly connected to one of the synchronous pulleys of the synchronous pulley assembly. The rear ends of the two synchronous pulleys of the synchronous pulley assembly are rotatably connected to the rear plate. The front end of one synchronous pulley of the synchronous pulley assembly is fixedly connected to the lifting shaft. The front end of the other synchronous pulley of the synchronous pulley assembly is connected to the negative pressure roller assembly.

[0010] Furthermore, the negative pressure roller assembly includes a venting slip ring, a negative pressure fan roller, and multiple air inlets. The fixed end of the venting slip ring is fixedly installed at the rear end of the front protective plate, and the rotating end of the venting slip ring extends to the inner side of the negative pressure fan roller and is fixedly connected to the negative pressure fan roller. The rear end of the negative pressure fan roller is fixedly connected to a synchronous wheel of the synchronous wheel assembly. The inner side of the negative pressure fan roller is hollow, and multiple air inlets are evenly fixedly installed around the negative pressure fan roller, with multiple air inlets having multiple air suction holes.

[0011] Furthermore, the fixed end of the venting slip ring is provided with an air outlet, and the rotating end of the venting slip ring is provided with an air inlet. The air inlet of the venting slip ring is located inside the negative pressure fan drum, and the air outlet of the venting slip ring is connected to the exhaust fan. The lower end of the negative pressure fan drum is close to but does not contact the long shaft end of the cam.

[0012] Furthermore, the transmission ratio of the synchronous pulley component is the same as the ratio of the number of long shafts of the lifting shaft to the number of air inlets, and a pasting sheet feeding device is provided on the negative pressure fan roller near the cotton core input end.

[0013] Furthermore, the auxiliary transport device includes two transport components and a second motor. The two transport components are located outside the two supports, and the second motor is located at the rear end of one of the transport components. The transport component includes a transport shaft and two shaft brackets. The transport shaft is rotatably mounted between the two shaft brackets, and the two shaft brackets are fixedly mounted outside the supports. The second motor is fixedly mounted at the rear end of one shaft bracket, and the output end of the second motor is fixedly connected to the corresponding transport shaft. The upper horizontal plane of the transport shaft is lower than the horizontal plane when the long shaft end of the cam is above.

[0014] By applying the technical solution of this utility model, the cam and air inlet are designed to continuously lift the cotton core while ensuring that the adhesive sheet is moved to the bottom to guarantee adhesion. The synchronous wheel component allows a single power source to drive both the lifting shaft and the negative pressure fan roller simultaneously, saving energy and ensuring high synchronization. The transport shaft ensures stable transport of the cotton core and good adhesion effect. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0016] Figure 1 A schematic diagram of the structure of the multi-layer fabric bonding device provided in this embodiment of the present invention is shown;

[0017] Figure 2 A front view of the multi-layer fabric bonding device provided in an embodiment of the present invention is shown;

[0018] Figure 3 A left view of the multi-layer fabric bonding device provided in an embodiment of the present invention is shown;

[0019] Figure 4 A schematic diagram of the lifting and bonding device provided in an embodiment of the present invention is shown;

[0020] Figure 5 It shows along Figure 3 A schematic diagram of the structure of AA with a portion removed.

[0021] The above figures include the following reference numerals:

[0022] 1. Frame; 11. Bracket; 12. Front connecting plate; 13. Front protective plate; 14. Rear plate; 15. Top plate; 2. Lifting and fitting device; 21. Lifting assembly; 211. Mounting plate; 212. Mounting rod; 213. Lifting shaft; 214. Cam; 215. Connecting plate; 22. Drive assembly; 221. First motor; 222. Synchronous pulley assembly; 23. Negative pressure roller assembly; 231. Ventilation slip ring; 232. Negative pressure fan roller; 233. Air intake; 3. Auxiliary transport device; 31. Transport shaft; 32. Shaft frame; 33. Second motor. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0024] like Figures 1-5 As shown, this utility model embodiment provides a multi-layer fabric bonding device. The multi-layer fabric bonding device includes a frame 1, on which a lifting bonding device 2 for bonding a cotton core to an adhesive sheet and an auxiliary transport device 3 for assisting in moving the cotton core are installed. The lifting bonding device 2 includes a lifting component 21 for lifting the cotton core, a driving component 22 for providing driving force, and a negative pressure roller assembly 23 for adsorbing the adhesive sheet and driving the adhesive sheet to rotate. The lifting component 21, the driving component 22, and the negative pressure roller assembly 23 are respectively disposed on the frame 1. The driving component 22 is drivenly connected to the lifting component 21 and the negative pressure roller assembly 23 respectively. The lifting component 21 is located below the negative pressure roller assembly 23. A gap is formed between the lifting component 21 and the negative pressure roller assembly 23 for the cotton core to pass through. The lifting component 21 intermittently bonds with or separates from the circumferential surface of the negative pressure roller assembly 23 so that the adhesive sheet and the cotton core are bonded at different positions.

[0025] When the multi-layer fabric bonding device is in normal use, the cotton core is transported by the auxiliary transport device 3. The drive component 22 is started, and the drive component 22 drives the lifting component 21 and the negative pressure roller component 23 to run synchronously. The lifting component 21 lifts the cotton core upward, and at the same time, the negative pressure roller component 23 moves the adhesive sheet to the lower end. The cotton core and the adhesive sheet are bonded together, so that the adhesive sheet is stuck to the cotton core. By driving the lifting component 21 and the negative pressure roller component 23 to run synchronously, the automatic continuous fixed-length bonding of the adhesive sheet and the cotton core is realized, which will not cause the glue to seep through the fabric and saves glue.

[0026] The frame 1 includes two supports 11, a front connecting plate 12, a front protective plate 13, a rear plate 14, and a top plate 15. The two supports 11 are arranged parallel to each other. The front connecting plate 12 is fixedly installed at the front end between the two supports 11. The front protective plate 13 is fixedly installed above the supports 11 and the front connecting plate 12. The rear plate 14 is fixedly installed at the rear end of the supports 11. The top plate 15 is fixedly installed at the upper end between the front protective plate 13 and the rear plate 14. The outer side of the supports 11 is connected to the auxiliary transport device 3. The rear end of the front connecting plate 12 is connected to the lifting assembly 21. The rear end of the front protective plate 13 is connected to the negative pressure roller assembly 23. The drive assembly 22 is installed on the rear plate 14.

[0027] The lifting assembly 21 includes two mounting plates 211, two mounting rods 212, a lifting shaft 213, a cam 214, and a connecting plate 215. The two mounting plates 211 are arranged parallel to each other. The two mounting rods 212 pass through the left and right ends of the two mounting plates 211. The front and rear ends of the mounting rods 212 are fixedly connected to the front connecting plate 12 and the rear plate 14. The lifting shaft 213 passes through the two mounting plates 211 and is rotatably connected to the two mounting plates 211. The cam 214 is fixedly installed on the outside of the lifting shaft 213. The connecting plate 215 is fixedly installed on the lower end of the two mounting plates 211. The rear end of the lifting shaft 213 is connected to the drive assembly 22.

[0028] When the multi-layer fabric bonding device is in normal use, the drive component 22 drives the lifting shaft 213 to rotate along the mounting plate 211. The lifting shaft 213 drives the cam 214 to rotate. When the long shaft end of the cam 214 rotates to the top, the cam 214 lifts the cotton core. The setting of the cam 214 enables the cotton core to be continuously lifted, which works in conjunction with the negative pressure roller assembly 23 to complete the bonding.

[0029] The drive assembly 22 includes a first motor 221 and a synchronous pulley assembly 222. The synchronous pulley assembly 222 consists of two synchronous pulleys and a synchronous belt. The first motor 221 is fixedly installed at the rear end of the rear plate 14. The output end of the first motor 221 passes through the rear plate 14 and is fixedly connected to one of the synchronous pulleys of the synchronous pulley assembly 222. The rear ends of the two synchronous pulleys of the synchronous pulley assembly 222 are rotatably connected to the rear plate 14. The front end of one synchronous pulley of the synchronous pulley assembly 222 is fixedly connected to the lifting shaft 213. The front end of the other synchronous pulley of the synchronous pulley assembly 222 is connected to the negative pressure roller assembly 23.

[0030] When the multi-layer fabric bonding device is in normal use, the first motor 221 is started. The first motor 221 drives one of the synchronous pulleys of the synchronous pulley component 222 to rotate. The two synchronous pulleys run synchronously through the synchronous belt. The two synchronous pulleys drive the lifting shaft 213 and the negative pressure roller assembly 23 to rotate respectively. The synchronous pulley component 222 enables a single power source to drive the lifting shaft 213 and the negative pressure roller assembly 23 simultaneously, which saves energy and has high synchronization.

[0031] The negative pressure roller assembly 23 includes a ventilation slip ring 231, a negative pressure fan roller 232, and multiple air inlets 233. The fixed end of the ventilation slip ring 231 is fixedly installed at the rear end of the front protective plate 13, and the rotating end of the ventilation slip ring 231 extends to the inner side of the negative pressure fan roller 232 and is fixedly connected to the negative pressure fan roller 232. The rear end of the negative pressure fan roller 232 is fixedly connected to one of the synchronous pulleys of the synchronous pulley assembly 222. The inner side of the negative pressure fan roller 232 is hollow. Multiple air inlets 233 are evenly fixedly installed around the negative pressure fan roller 232, and multiple air inlets 233 are provided with multiple air suction holes.

[0032] An air outlet is provided on the fixed end of the ventilation slip ring 231, and an air inlet is provided on the rotating end of the ventilation slip ring 231. The air inlet of the ventilation slip ring 231 is located inside the negative pressure fan drum 232. The air outlet of the ventilation slip ring 231 is connected to the exhaust fan. The lower end of the negative pressure fan drum 232 is close to but does not contact the long shaft end of the cam 214.

[0033] The transmission ratio of the synchronous pulley component 222 is the same as the ratio of the number of long shafts of the lifting shaft 213 to the number of air inlets 233, which is conducive to synchronizing the lifting action of the lifting shaft 213 with the downward action of the air inlets 233 adsorbing the adhesive sheet. The negative pressure fan roller 232 is equipped with an adhesive sheet feeding device near the cotton core input end.

[0034] When the multi-layer fabric bonding device is in normal use, one of the synchronous pulleys of the synchronous pulley component 222 drives the negative pressure fan roller 232 to rotate, starting the exhaust fan. The exhaust fan draws negative pressure into the inside of the negative pressure fan roller 232 through the ventilation slip ring 231. The adhesive sheet feeding device attaches the adhesive sheet without adhesive to the suction port 233. When the adhesive sheet rotates to the lower position with the negative pressure fan roller 232, the cotton core adheres to the adhesive sheet, making the adhesive sheet stick to the cotton core. The setting of the ventilation slip ring 231 and the negative pressure fan roller 232 allows the adhesive sheet to be adsorbed and transported. When it sticks to the cotton core, it is carried away by the cotton core. The bonding effect is good and the efficiency is high. By setting the transmission ratio of the synchronous pulley component 222 to be the same as the ratio of the number of long shafts of the lifting shaft 213 to the number of suction ports 233, when the long shaft of the lifting shaft 213 rotates to the upper position, the suction port 233 will transport an adhesive sheet to the lower end to ensure proper bonding.

[0035] The auxiliary transport device 3 includes two transport components and a second motor 33. The two transport components are located outside the two supports 11, and the second motor 33 is located at the rear end of one of the transport components. The transport component includes a transport shaft 31 and two shaft brackets 32. The transport shaft 31 is rotatably mounted between the two shaft brackets 32, and the two shaft brackets 32 are fixedly mounted outside the support 11. The second motor 33 is fixedly mounted at the rear end of one shaft bracket 32. The output end of the second motor 33 is fixedly connected to the corresponding transport shaft 31. The upper horizontal plane of the transport shaft 31 is lower than the horizontal plane when the long shaft end of the cam 214 is above, but higher than the horizontal plane when the short shaft end of the cam 214 is above. This allows the cotton core to move normally under the drive of the transport shaft 31 when the short shaft end of the cam 214 is facing upward. When the long shaft end of the cam 214 is facing upward, the cotton core will be lifted by the cam 214 and contact the adhesive sheet.

[0036] When the multi-layer fabric bonding device is in normal use, the second motor 33 is started, which drives a transport shaft 31 to rotate, assisting in the transport of the cotton core. The transport shaft 31 ensures stable transport of the cotton core and good bonding effect.

[0037] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0038] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0039] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms 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 on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0040] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0041] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0042] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A multi-layer fabric bonding device, characterized in that, The multi-layer fabric bonding device includes a frame (1), on which a lifting bonding device (2) for bonding the cotton core to the adhesive sheet and an auxiliary transport device (3) for assisting in moving the cotton core are installed. The lifting and bonding device (2) includes a lifting assembly (21) for lifting the cotton core, a driving assembly (22) for providing driving force, and a negative pressure roller assembly (23) for adsorbing the adhesive sheet and driving the adhesive sheet to rotate. The lifting assembly (21), the driving assembly (22) and the negative pressure roller assembly (23) are respectively mounted on the frame (1). The driving assembly (22) is driven to connect to the lifting assembly (21) and the negative pressure roller assembly (23) respectively. The lifting assembly (21) is located below the negative pressure roller assembly (23).

2. The multi-layer fabric bonding device according to claim 1, characterized in that, The frame (1) includes two supports (11), a front connecting plate (12), a front protective plate (13), a rear plate (14), and a top plate (15). The two supports (11) are arranged parallel to each other. The front connecting plate (12) is fixedly installed at the front end between the two supports (11). The front protective plate (13) is fixedly installed above the supports (11) and the front connecting plate (12). The rear plate (14) is fixedly installed at the rear end of the supports (11). The top plate (15) is fixedly installed at the upper end between the front protective plate (13) and the rear plate (14). The outer side of the supports (11) is connected to the auxiliary transport device (3). The rear end of the front connecting plate (12) is connected to the lifting assembly (21). The rear end of the front protective plate (13) is connected to the negative pressure roller assembly (23). A drive assembly (22) is installed on the rear plate (14).

3. The multi-layer fabric bonding device according to claim 2, characterized in that, The lifting assembly (21) includes two mounting plates (211), two mounting rods (212), a lifting shaft (213), a cam (214), and a connecting plate (215). The two mounting plates (211) are arranged parallel to each other. The two mounting rods (212) pass through the left and right ends of the two mounting plates (211). The front and rear ends of the mounting rods (212) are fixedly connected to the front connecting plate (12) and the rear plate (14). The lifting shaft (213) passes through the two mounting plates (211) and is rotatably connected to the two mounting plates (211). The cam (214) is fixedly installed on the outside of the lifting shaft (213). The connecting plate (215) is fixedly installed on the lower end of the two mounting plates (211). The rear end of the lifting shaft (213) is connected to the drive assembly (22).

4. The multi-layer fabric bonding device according to claim 3, characterized in that, The drive assembly (22) includes a first motor (221) and a synchronous pulley assembly (222). The synchronous pulley assembly (222) consists of two synchronous pulleys and a synchronous belt. The first motor (221) is fixedly installed at the rear end of the rear plate (14). The output end of the first motor (221) passes through the rear plate (14) and is fixedly connected to one of the synchronous pulleys of the synchronous pulley assembly (222). The rear ends of the two synchronous pulleys of the synchronous pulley assembly (222) are rotatably connected to the rear plate (14). The front end of one synchronous pulley of the synchronous pulley assembly (222) is fixedly connected to the lifting shaft (213). The front end of the other synchronous pulley of the synchronous pulley assembly (222) is connected to the negative pressure roller assembly (23).

5. The multi-layer fabric bonding device according to claim 3, characterized in that, The negative pressure roller assembly (23) includes a ventilation slip ring (231), a negative pressure fan roller (232), and multiple air inlets (233). The fixed end of the ventilation slip ring (231) is fixedly installed at the rear end of the front protective plate (13). The rotating end of the ventilation slip ring (231) extends to the inner side of the negative pressure fan roller (232) and is fixedly connected to the negative pressure fan roller (232). The rear end of the negative pressure fan roller (232) is fixedly connected to one of the synchronous pulleys of the synchronous pulley assembly (222). The inner side of the negative pressure fan roller (232) is hollow. Multiple air inlets (233) are evenly fixedly installed around the negative pressure fan roller (232). Multiple air inlets (233) are provided on the air inlets (233).

6. The multi-layer fabric bonding device according to claim 5, characterized in that, The fixed end of the ventilation slip ring (231) is provided with an air outlet, and the rotating end of the ventilation slip ring (231) is provided with an air inlet. The air inlet of the ventilation slip ring (231) is located inside the negative pressure fan drum (232). The air outlet of the ventilation slip ring (231) is connected to the exhaust fan. The lower end of the negative pressure fan drum (232) is close to but does not contact the long shaft end of the cam (214).

7. The multi-layer fabric bonding device according to claim 6, characterized in that, The transmission ratio of the synchronous pulley component (222) is the same as the ratio of the number of long shafts of the lifting shaft (213) and the number of air inlets (233). A pasting sheet feeding device is provided on the negative pressure fan roller (232) near the cotton core input end.

8. The multi-layer fabric bonding device according to claim 7, characterized in that, The auxiliary transport device (3) includes two transport components and a second motor (33). The two transport components are located outside the two supports (11), and the second motor (33) is located at the rear end of one transport component. The transport component includes a transport shaft (31) and two shaft brackets (32). The transport shaft (31) is rotatably mounted between the two shaft brackets (32), and the two shaft brackets (32) are fixedly mounted outside the support (11). The second motor (33) is fixedly mounted at the rear end of one shaft bracket (32). The output end of the second motor (33) is fixedly connected to the corresponding transport shaft (31). The upper horizontal plane of the transport shaft (31) is lower than the horizontal plane when the long shaft end of the cam (214) is above.

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