A bonding device for composite curtains

Abstract

This application relates to a bonding device for composite curtains, belonging to the technical field of textile machinery. It includes a frame and a first feed roller, a second feed roller, a feed roller, a first bonding roller, and a second bonding roller rotatably mounted on the frame. An adhesive applicator is provided on the frame. This application uses the adhesive applicator to apply hot melt adhesive to a base fabric layer. Then, the base fabric layer coated with hot melt adhesive and the functional layer introduced by the second feed roller both pass between the first and second bonding rollers. The first and second bonding rollers cooperate to press and bond the functional layer and the base fabric layer together, thus completing the fixing work between the base fabric layer and the functional layer. This tight bonding method greatly improves the connection strength of each part of the composite curtain, making it less likely for the functional layers of the composite curtain to detach or be damaged.

Description

Technical Field

[0001] This application relates to the technical field of textile machinery, and in particular to a bonding device for composite curtains. Background Technology

[0002] Composite curtains are a decorative style that combines different types of curtains, typically consisting of two or more layers. They are designed to offer more functionality and a better decorative effect.

[0003] In related technologies, one can refer to the Chinese utility model patent with authorization announcement number CN212037127U, which discloses a light-blocking and heat-insulating composite curtain, including a base fabric layer, a light-blocking layer on the outside of the base fabric layer, a heat-insulating layer on the inside of the base fabric layer, and fabric composite strips connected to the top and bottom of the base fabric layer by zippers. Several clips are evenly spaced on the fabric composite strips, and the light-blocking layer and the heat-insulating layer are clamped and fixed by the clips.

[0004] The aforementioned composite curtains use clips to secure the various functional layers. However, since curtains are usually moved manually by pulling them, this method of securing the functional layers with clips can easily cause the layers to detach from the clips during the pulling process. This makes the composite curtains inconvenient to use and prone to damage. Summary of the Invention

[0005] In order to improve the connection strength of each part of the composite curtain and make the functional layers of the composite curtain less likely to fall off or be damaged, this application provides a bonding device for composite curtains.

[0006] The bonding device for composite curtains provided in this application adopts the following technical solution:

[0007] A bonding device for composite curtains includes a frame and a first feed roller, a second feed roller, and an output roller rotatably mounted on the frame. The first feed roller and the output roller are located at opposite ends of the frame. The base fabric layer of the composite curtain is fed into the frame through the first feed roller, and the functional layer of the composite curtain is fed into the frame through the second feed roller. The frame is equipped with an adhesive applicator for applying hot melt adhesive to the base fabric layer. A first bonding roller and a second bonding roller are rotatably mounted on the frame, with the first bonding roller positioned above the second bonding roller. A bonding gap is provided between the first bonding roller and the second bonding roller. The glued base fabric layer passes around the second bonding roller and through the space between the first and second bonding rollers. The functional layer passes around the first bonding roller and through the space between the first and second bonding rollers. The functional layer and the base fabric layer are bonded together under the action of the first and second bonding rollers. The bonded composite curtain is then exited from the frame through the output roller for collection and processing.

[0008] By adopting the above technical solution, after the base fabric layer is introduced into the frame by the first feed roller, the gluing mechanism is activated to apply hot melt adhesive to the base fabric layer. Then, the base fabric layer with hot melt adhesive and the functional layer introduced by the second feed roller both pass between the first bonding roller and the second bonding roller. The first bonding roller and the second bonding roller cooperate to press and bond the functional layer and the base fabric layer together, thereby completing the fixing work between the base fabric layer and the functional layer. The tight bonding method greatly improves the connection strength of each part of the composite curtain, making it less likely for the functional layers of the composite curtain to fall off or be damaged.

[0009] Optionally, the adhesive application mechanism includes:

[0010] Mounting block, which is vertically slidably mounted on a frame located above the first feed roller;

[0011] A hot melt adhesive roller, which is rotatably mounted on a mounting block;

[0012] An adjustment assembly, which is mounted on a frame and is used to adjust the height of the mounting block.

[0013] By adopting the above technical solution, the height of the mounting block can be adjusted using the adjustment component, so that the hot melt adhesive roller on the mounting block can press against the base fabric layer to perform adhesive application. Furthermore, by adjusting the pressure of the hot melt adhesive roller on the base fabric layer using the adjustment component, the adhesive thickness on the base fabric layer can be adjusted, thus expanding the adaptability of the base fabric layer for bonding different functional layers.

[0014] Optionally, the adjustment component includes:

[0015] An adjusting screw, which is rotatably mounted on the frame and threadedly connected to a mounting block;

[0016] An adjusting motor is mounted on the frame and its output shaft is connected to an adjusting lead screw.

[0017] By adopting the above technical solution, the adjustment motor starts and drives the adjustment screw to rotate, and the rotation of the adjustment screw drives the mounting block to move, thereby realizing the adjustment of the height of the mounting block by controlling the adjustment motor.

[0018] Optionally, the frame is provided with a drive assembly, which drives an adjusting motor to adjust the position of the hot melt adhesive roller according to the amount of hot melt adhesive consumed. The drive assembly includes:

[0019] A pressure block is vertically slidably mounted on the frame, and the first feed roller is rotatably mounted on the pressure block;

[0020] An adjusting spring is mounted on the frame and connected to the bottom of the pressure block;

[0021] A pressure sensor is mounted on the frame and located below the pressure block. When the hot melt adhesive roller squeezes the first feed roller, the lower surface of the pressure block comes into contact with the pressure sensor.

[0022] The controller is mounted on the frame and electrically connected to both the pressure sensor and the regulating motor.

[0023] By adopting the above technical solution, when the hot melt glue roller squeezes and applies glue to the first feed roller, the pressure block compresses the adjusting spring under the action of the hot melt glue roller and applies pressure to the pressure sensor. The pressure sensor then converts the pressure coefficient it senses into an electrical signal and transmits it to the controller. When the pressure signal sensed by the pressure sensor weakens, it means that there is less hot melt glue on the hot melt glue roller and the pressure of the hot melt glue roller applying glue to the fabric decreases. The controller then controls the adjusting motor to start and drive the hot melt glue roller to move downward, thereby completing the automatic adjustment of the position of the hot melt glue roller. There is no need for manual real-time adjustment, and the adjustment is more precise, greatly improving the glue application effect.

[0024] Optionally, the mounting block is provided with a connecting mechanism, and the hot melt adhesive roller is detachably connected to the mounting block through the connecting mechanism. The connecting mechanism includes:

[0025] The first connecting ring is semi-circular with its opening facing upward. The first connecting ring is mounted on the mounting block, and the shaft of the hot melt adhesive roller is placed on the first connecting ring.

[0026] The second and third connecting rings are rotatably mounted on the mounting block. The second and third connecting rings are both arranged in a quarter-ring shape. The first, second, and third connecting rings cooperate to form an integral ring. The rotating shaft of the hot melt adhesive roller is located inside the first, second, and third connecting rings.

[0027] A rotating assembly is mounted on the mounting block and is used to control the rotation of the second connecting ring and the third connecting ring.

[0028] By adopting the above technical solution, when the hot melt adhesive on the hot melt adhesive roller is used up, the hot melt adhesive roller needs to be replaced. By rotating the second connecting ring and the third connecting ring, the hot melt adhesive roller can be removed from the first connecting ring. Then, the replaced hot melt adhesive roller is placed on the first connecting ring. The rotating component drives the second connecting ring and the third connecting ring to rotate and close with the first connecting ring to limit the hot melt adhesive roller, thereby completing the connection and fixation work between the hot melt adhesive roller and the mounting block.

[0029] Optionally, the rotating assembly includes:

[0030] Two rotating rods are rotatably mounted on a mounting block and connected to a second connecting ring and a third connecting ring, respectively. Each rotating rod has a rotating shaft that is rotatably connected to the mounting block. The rotating rods located on both sides of the rotating shaft are divided into a first part and a second part. The first part is located on both sides of the rotating shafts of the two rotating rods that are far apart from each other, and the second part is located on the side of the rotating shafts of the two rotating rods that are close to each other. The first part of each rotating rod is connected to the second connecting ring and the third connecting ring, respectively.

[0031] Two rotating springs are provided, each mounted on a mounting block and connected to the second part of two rotating rods respectively. Under the action of the two rotating springs, the two rotating rods drive the second connecting ring and the third connecting ring to close with the first connecting ring.

[0032] By adopting the above technical solution, when the hot melt glue roller needs to be replaced, the second part of the two rotating rods is moved, causing the second part to compress the rotating spring. The first part of the two rotating rods then moves the second and third connecting rings away from the first connecting ring, allowing the hot melt glue roller to be removed from the first connecting ring. After the hot melt glue roller is replaced, the second part of the two rotating rods is released, and the second part of the two rotating rods moves back to its original position under the action of the two rotating springs. The second and third connecting rings then move back to their original positions and close with the first connecting ring, thus completing the work of controlling the rotation of the second and third connecting rings.

[0033] Optionally, a limit protection rod is provided on the frame, and when the hot melt adhesive on the hot melt adhesive roller is consumed, the limit protection rod abuts against the lower surface of the mounting block.

[0034] By adopting the above technical solution, a fixed limit protection rod is installed on the frame. After the hot melt glue on the hot melt glue roller is consumed, the limit protection rod abuts against the lower surface of the mounting block, thereby preventing the mounting block from continuing to move down under the action of the adjusting motor. This reduces the probability that the hot melt glue roller without hot melt glue will continue to work on the first feed roller, and avoids the phenomenon that the base fabric layer will not be coated with glue due to the hot melt glue roller without hot melt glue continuing to work.

[0035] Optionally, the frame is provided with a top rod, and the lower surface of the mounting block is provided with a vertical through hole. When the mounting block moves to the point of contact with the limit protection rod, the top of the top rod extends into the through hole and contacts the second part of the two rotating rods. The top rod drives the second part of the two rotating rods to compress the two rotating springs to the limit position.

[0036] By adopting the above technical solution, a top rod is installed on the frame. When the hot melt glue on the hot melt glue roller is consumed, the mounting block moves and contacts the limit protection rod. At the same time, the top rod extends through the through hole into the position where the two rotating rods are installed on the mounting block and drives the second part of the two rotating rods to compress the two rotating springs to the limit position. Thus, after the hot melt glue on the hot melt glue roller is consumed, the second connecting ring and the third connecting ring can automatically rotate open under the action of the top rod, which facilitates the replacement of the hot melt glue roller by the operator and greatly improves work efficiency.

[0037] Optionally, an alarm is provided on the frame, and an alarm switch electrically connected to the alarm is provided on the mounting block. When the mounting block moves to contact the limit protection rod, the top of the top rod is pressed tightly and the alarm switch is turned on.

[0038] By adopting the above technical solution, an alarm is fixedly connected to the frame. When the hot melt glue on the hot melt glue roller is used up, the push rod moves into the mounting block and drives the two rotating rods to rotate to their limit positions. The push rod then presses against the alarm, triggering the alarm. This allows the staff to replace the hot melt glue roller in a timely manner, eliminating the need for staff to constantly monitor the working status of the hot melt glue roller, reducing workload, and improving work efficiency.

[0039] Optionally, a moving block is vertically slidably arranged on the frame, the first bonding roller is rotatably arranged on the moving block, and a moving cylinder is arranged on the frame, with the piston rod of the moving cylinder vertically downward and connected to the moving block.

[0040] By adopting the above technical solution, a moving cylinder is installed on the frame. The moving cylinder is activated to drive the moving block to move. The moving block drives the first bonding roller to move. The movement of the first bonding roller adjusts the distance between the first bonding roller and the second bonding roller, thereby expanding the adaptability of the first bonding roller and the second bonding roller to base fabric layers and functional layers of various thicknesses.

[0041] In summary, this application includes at least one of the following beneficial technical effects:

[0042] 1. Hot melt adhesive is applied to the base fabric layer by the glue application mechanism. Then, the base fabric layer with hot melt adhesive and the functional layer introduced by the second feed roller both pass between the first bonding roller and the second bonding roller. The first bonding roller and the second bonding roller cooperate to press and bond the functional layer and the base fabric layer together, thereby completing the fixing work between the base fabric layer and the functional layer. The tight bonding method greatly improves the connection strength of each part of the composite curtain, making the functional layers of the composite curtain less likely to fall off or be damaged.

[0043] 2. By installing a fixed limit protection rod on the frame, after the hot melt glue on the hot melt glue roller is consumed, the limit protection rod will abut against the lower surface of the mounting block, thereby preventing the mounting block from continuing to move down under the action of the adjusting motor. This reduces the probability that the hot melt glue roller without hot melt glue will press against the first feed roller and avoid the phenomenon that the hot melt glue roller without hot melt glue will continue to work, resulting in no glue being applied to the base fabric layer.

[0044] 3. By installing a moving cylinder on the frame, the moving cylinder drives the moving block to move, and the moving block drives the first bonding roller to move. The movement of the first bonding roller adjusts the gap between the first bonding roller and the second bonding roller, thereby expanding the adaptability of the first bonding roller and the second bonding roller to base fabric layers and functional layers of various thicknesses. Attached Figure Description

[0045] Figure 1 This is a three-dimensional structural diagram of this application;

[0046] Figure 2 This is a schematic diagram of the structure of the adjustment component in this application;

[0047] Figure 3 This is a structural schematic diagram of the connection mechanism and drive assembly in this application, in which the side wall of the mounting block is shown in cross section.

[0048] Reference numerals: 1. Frame; 11. First feed roller; 12. Second feed roller; 13. Outlet roller; 14. Limit protection rod; 15. Top rod; 16. Alarm switch; 17. Alarm; 2. Glue application mechanism; 21. Mounting block; 22. Hot melt glue roller; 23. Adjustment assembly; 24. Adjustment screw; 25. Adjustment motor; 3. Connecting mechanism; 31. First connecting ring; 32. Second connecting ring; 33. Third connecting ring; 34. Rotating assembly; 35. Rotating rod; 36. Rotating spring; 37. Mounting cavity; 38. First part; 39. Second part; 4. Drive assembly; 41. Pressure block; 42. Adjustment spring; 43. Pressure sensor; 44. Controller; 45. Moving block; 46. Moving cylinder; 51. First bonding roller; 52. Second bonding roller. Detailed Implementation

[0049] The following is in conjunction with the appendix Figure 1 - Appendix Figure 3 This application will be described in further detail.

[0050] This application discloses a bonding device for composite curtains.

[0051] Reference Figure 1 and Figure 2The bonding device for the composite curtain includes a frame 1 and a first feed roller 11, a second feed roller 12, and an output roller 13 rotatably mounted on the frame 1. The first feed roller 11 and the output roller 13 are located at opposite ends of the frame 1. The base fabric layer of the composite curtain is fed into the frame 1 through the first feed roller 11, and the functional layer of the composite curtain is fed into the frame 1 through the second feed roller 12. An adhesive applicator 2 is provided on the frame 1 for applying hot melt adhesive to the base fabric layer. A first bonding roller 51 and a second bonding roller 52 are rotatably mounted on the frame 1. After the functional layer and the base fabric layer are bonded together by the first bonding roller 51 and the second bonding roller 52, they are exported through the output roller 13.

[0052] Reference Figure 1 and Figure 2 The adhesive application mechanism 2 includes a mounting block 21, a hot melt adhesive roller 22, and an adjustment assembly 23. The mounting block 21 is vertically slidably mounted on the frame 1, located above the first feed roller 11. A connecting mechanism 3 is provided on the mounting block 21, through which the hot melt adhesive roller 22 is detachably and rotatably connected to the mounting block 21. The adjustment assembly 23 is provided on the frame 1 and is used to adjust the height of the mounting block 21.

[0053] Reference Figure 1 and Figure 2 The adjustment assembly 23 includes an adjustment screw 24 and an adjustment motor 25. The adjustment screw 24 is rotatably mounted on the frame 1 and is in a vertical position. The adjustment screw 24 is threadedly connected to the mounting block 21. The adjustment motor 25 is fixedly connected to the frame 1, and its output shaft is fixedly connected to the adjustment screw 24. When the adjustment motor 25 is started, it drives the adjustment screw 24 to rotate. The rotation of the adjustment screw 24 drives the mounting block 21 to move, thereby adjusting the height of the mounting block 21 by controlling the adjustment motor 25.

[0054] Reference Figure 1 and Figure 3 A drive assembly 4 is mounted on the frame 1. The drive assembly 4 drives an adjusting motor 25 to adjust the position of the hot melt adhesive roller 22 according to the amount of hot melt adhesive consumed. The drive assembly 4 includes a pressure block 41, an adjusting spring 42, a pressure sensor 43, and a controller 44. The pressure block 41 is vertically slidably mounted on the frame 1, and the first feed roller 11 is rotatably connected to the side wall of the pressure block 41. The adjusting spring 42 is fixedly connected to the frame 1 and is in a vertical position, with its top end connected to the lower surface of the pressure block 41. The pressure sensor 43 is fixedly connected to the frame 1 located below the pressure block 41. When the hot melt adhesive roller 22 presses against the first feed roller 11, the pressure sensor 43 abuts against the lower surface of the pressure block 41. The controller 44 is fixedly connected to the frame 1 and electrically connected to both the pressure sensor 43 and the adjusting motor 25.

[0055] Reference Figure 1 and Figure 3When the hot melt glue roller 22 applies glue to the first feed roller 11, the pressure block 41 compresses the adjusting spring 42 under the action of the hot melt glue roller 22 and applies pressure to the pressure sensor 43. The pressure sensor 43 then converts the pressure coefficient it senses into an electrical signal and transmits it to the controller 44. When the pressure signal sensed by the pressure sensor 43 weakens, it means that there is less hot melt glue on the hot melt glue roller 22 and the pressure of the hot melt glue roller 22 when applying glue to the fabric is reduced. The controller 44 then controls the adjusting motor 25 to start and drive the hot melt glue roller 22 to move downward, thereby completing the automatic adjustment of the position of the hot melt glue roller 22.

[0056] Reference Figure 1 and Figure 3 The connecting mechanism 3 includes a first connecting ring 31, a second connecting ring 32, a third connecting ring 33, and a rotating assembly 34. The first connecting ring 31 is fixedly connected to the upper surface of the mounting block 21. The second connecting ring 32 and the third connecting ring 33 are both rotatably mounted on the mounting block 21 via the rotating assembly 34. The first connecting ring 31 is semi-circular with its opening facing upwards, and the shaft of the hot melt adhesive roller 22 is located on the first connecting ring 31. The second connecting ring 32 and the third connecting ring 33 are both quarter-circular, and the first connecting ring 31, the second connecting ring 32, and the third connecting ring 33 cooperate to form an integral ring, with the shaft of the hot melt adhesive roller 22 located within the first connecting ring 31, the second connecting ring 32, and the third connecting ring 33.

[0057] Reference Figure 1 and Figure 3 The rotating assembly 34 includes two rotating rods 35 and two rotating springs 36. A mounting cavity 37 is formed on the mounting block 21 located below the first connecting ring 31, and both rotating rods 35 are rotatably mounted within the mounting cavity 37. The axis of rotation of the rotating rods 35 divides them into two parts: a first part 38 and a second part 39. The first part 38 is located on opposite sides of the axis of rotation of the two rotating rods 35, away from each other. The second part 39 is located on the side of the axis of rotation of the two rotating rods 35, closer to each other. The first parts 38 of the two rotating rods 35 extend out of the mounting cavity 37 and are fixedly connected to the second connecting ring 32 and the third connecting ring 33, respectively. Both rotating springs 36 are fixedly connected to the top wall of the mounting cavity 37 and are fixedly connected to the second parts 39 of the two rotating rods 35, respectively. Under the action of the two rotating springs 36, the two rotating rods 35 drive the second connecting ring 32 and the third connecting ring 33 to close with the first connecting ring 31.

[0058] Reference Figure 1 and Figure 3A limit protection rod 14 is fixedly connected to the frame 1. The limit protection rod 14 is in a vertical position. When the hot melt adhesive on the hot melt roller 22 is consumed, the mounting block 21 moves down and abuts against the top of the limit protection rod 14. A top rod 15 is fixedly connected to the frame 1 located on one side of the limit protection rod 14. A vertical through hole is opened on the lower surface of the mounting block 21, and the through hole communicates with the mounting cavity 37. When the mounting block 21 moves to abut against the limit protection rod 14, the top of the top rod 15 extends into the through hole and enters the mounting cavity 37, contacting the second part 39 of the two rotating rods 35. The top rod 15 drives the second part 39 of the two rotating rods 35 to compress the two rotating springs 36 to the limit position.

[0059] Reference Figure 1 and Figure 3 An alarm switch 16 is fixedly connected to the inner top wall of the mounting cavity 37. An alarm 17, which is electrically connected to the alarm switch 16, is fixedly connected to the frame 1. When the push rod 15 drives the second part 39 of the two rotating rods 35 to compress the two rotating springs 36 to their limit positions, the top of the push rod 15 presses against and opens the alarm switch 16.

[0060] Reference Figure 1 and Figure 3 When the hot melt adhesive on the hot melt roller 22 is depleted, the mounting block 21 moves and contacts the limit protection rod 14. Simultaneously, the top rod 15 extends through the through hole to the position where the two rotating rods 35 are mounted on the mounting block 21, causing the second part 39 of the two rotating rods 35 to compress the two rotating springs 36 to their limit positions. The rotation of the second part 39 of the two rotating rods 35 causes the first part 38 to rotate, and the movement of the first part 38 of the two rotating rods 35 causes the second connecting ring 32 and the third connecting ring 33 to rotate away from the first connecting ring 31. At the same time, the top rod 15 presses against the alarm switch 16 and activates the alarm 17. The alarm 17 sounds, prompting the staff to replace the hot melt adhesive roller 22 after the hot melt adhesive is depleted. After replacement, the mounting block 21 can be moved back to its original position by adjusting the motor 25.

[0061] Reference Figure 1 and Figure 3 A movable block 45 is vertically slidably mounted on the frame 1 above the second bonding roller 52. The first bonding roller 51 is rotatably mounted on the side wall of the movable block 45. A movable cylinder 46 is fixedly connected to the frame 1 above the movable block 45, with the piston rod of the movable cylinder 46 vertically downward and connected to the upper surface of the movable block 45. When the movable cylinder 46 is activated, it drives the movable block 45 to move, which in turn drives the first bonding roller 51 to move. The movement of the first bonding roller 51 adjusts the gap between the first bonding roller 51 and the second bonding roller 52, thereby expanding the adaptability of the first bonding roller 51 and the second bonding roller 52 to base fabric layers and functional layers of various thicknesses.

[0062] The working principle of this application embodiment is as follows:

[0063] After the base fabric layer is introduced into the frame 1 by the first feed roller 11, the hot melt adhesive roller 22 applies hot melt adhesive to the base fabric layer. Then, the base fabric layer with hot melt adhesive and the functional layer introduced by the second feed roller 12 both pass between the first bonding roller 51 and the second bonding roller 52. The first bonding roller 51 and the second bonding roller 52 cooperate to press and bond the functional layer and the base fabric layer together, thereby completing the fixing work between the base fabric layer and the functional layer. The tight bonding method greatly improves the connection strength of each part of the composite curtain, making it less likely for the functional layers of the composite curtain to fall off or be damaged.

[0064] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A bonding device for composite curtains, characterized in that: The system includes a frame (1) and a first feed roller (11), a second feed roller (12), and a feed roller (13) rotatably mounted on the frame (1). The first feed roller (11) and the feed roller (13) are located at opposite ends of the frame (1). The base fabric layer of the composite curtain is fed into the frame (1) through the first feed roller (11), and the functional layer of the composite curtain is fed into the frame (1) through the second feed roller (12). The frame (1) is equipped with an adhesive applicator (2) for applying hot melt adhesive to the base fabric layer. The frame (1) is rotatably equipped with a first bonding roller (51) and a second bonding roller (52). The first bonding roller (51) is located above the second bonding roller (52). A bonding gap is left between the first bonding roller (51) and the second bonding roller (52). The glued base fabric layer bypasses the second bonding roller (52) and passes through the first bonding roller (51) and the second bonding roller (52). The functional layer bypasses the first bonding roller (51) and passes through the first bonding roller (51) and the second bonding roller (52). The functional layer and the base fabric layer are bonded together under the action of the first bonding roller (51) and the second bonding roller (52). The bonded composite curtain is discharged from the frame (1) through the fabric output roller (13) for collection and processing. The adhesive application mechanism (2) includes: Mounting block (21), which is vertically slidably mounted on the frame (1) above the first feed roller (11); Hot melt adhesive roller (22), which is rotatably mounted on mounting block (21); An adjustment component (23) is mounted on the frame (1) and is used to adjust the height of the mounting block (21); The adjustment component (23) includes: Adjusting screw (24), which is rotatably mounted on the frame (1) and threadedly connected to the mounting block (21); Adjustment motor (25), the adjustment motor (25) is mounted on the frame (1) and its output shaft is connected to the adjustment screw (24); A drive assembly (4) is provided on the frame (1). The drive assembly (4) is used to drive the adjustment motor (25) to adjust the position of the hot melt glue roller (22) according to the amount of hot melt glue consumed on the hot melt glue roller (22). The drive assembly (4) includes: A pressure block (41) is vertically slidably mounted on the frame (1), and the first feed roller (11) is rotatably mounted on the pressure block (41); An adjusting spring (42) is mounted on the frame (1) and connected to the bottom of the pressure block (41); Pressure sensor (43) is mounted on the frame (1) and located below the pressure block (41). When the hot melt glue roller (22) squeezes the first feed roller (11), the lower surface of the pressure block (41) abuts against the pressure sensor (43). The controller (44) is mounted on the frame (1) and is electrically connected to the pressure sensor (43) and the regulating motor (25).

2. The bonding device for a composite curtain according to claim 1, characterized in that: A connecting mechanism (3) is provided on the mounting block (21), and the hot melt adhesive roller (22) is detachably connected to the mounting block (21) through the connecting mechanism (3). The connecting mechanism (3) includes: The first connecting ring (31) is semi-circular, with its opening facing upwards. The first connecting ring (31) is mounted on the mounting block (21), and the shaft of the hot melt adhesive roller (22) is placed on the first connecting ring (31). The second connecting ring (32) and the third connecting ring (33) are rotatably mounted on the mounting block (21). The second connecting ring (32) and the third connecting ring (33) are both arranged in a quarter ring shape. The first connecting ring (31), the second connecting ring (32) and the third connecting ring (33) cooperate to form an integral ring. The rotating shaft of the hot melt adhesive roller (22) is located inside the first connecting ring (31), the second connecting ring (32) and the third connecting ring (33). Rotating assembly (34), which is mounted on mounting block (21) and used to control the rotation of second connecting ring (32) and third connecting ring (33).

3. The bonding device for a composite curtain according to claim 2, characterized in that: The rotating assembly (34) includes: Two rotating rods (35) are rotatably mounted on the mounting block (21) and connected to the second connecting ring (32) and the third connecting ring (33) respectively. The rotating rods (35) are provided with a rotating shaft that is rotatably connected to the mounting block (21). The rotating rods (35) located on both sides of the rotating shaft are divided into a first part (38) and a second part (39). The first part (38) is located on both sides of the rotating shafts of the two rotating rods (35) that are far apart from each other. The second part (39) is located on the side of the rotating shafts of the two rotating rods (35) that are close to each other. The first part (38) of the two rotating rods (35) is connected to the second connecting ring (32) and the third connecting ring (33) respectively. Two rotating springs (36) are mounted on the mounting block (21) and connected to the second part (39) of the two rotating rods (35) respectively. Under the action of the two rotating springs (36), the two rotating rods (35) drive the second connecting ring (32) and the third connecting ring (33) to close with the first connecting ring (31).

4. The bonding device for a composite curtain according to claim 3, characterized in that: A limit protection rod (14) is provided on the frame (1). When the hot melt adhesive on the hot melt adhesive roller (22) is consumed, the limit protection rod (14) abuts against the lower surface of the mounting block (21).

5. The bonding device for a composite curtain according to claim 4, characterized in that: A top rod (15) is provided on the frame (1). A vertical through hole is opened on the lower surface of the mounting block (21). When the mounting block (21) moves to abut against the limit protection rod (14), the top of the top rod (15) extends into the through hole and contacts the second part (39) of the two rotating rods (35). The top rod (15) drives the second part (39) of the two rotating rods (35) to compress the two rotating springs (36) to the limit position.

6. The bonding device for a composite curtain according to claim 5, characterized in that: An alarm (17) is provided on the frame (1), and an alarm switch (16) electrically connected to the alarm (17) is provided on the mounting block (21). When the mounting block (21) moves to contact the limit protection rod (14), the top of the top rod (15) is pressed and the alarm switch (16) is opened.

7. The bonding device for a composite curtain according to claim 1, characterized in that: A movable block (45) is vertically slidably mounted on the frame (1), and the first bonding roller (51) is rotatably mounted on the movable block (45). A movable cylinder (46) is mounted on the frame (1), and the piston rod of the movable cylinder (46) is vertically downward connected to the movable block (45).

Images