Blanket back pre-press mechanism

Abstract

The utility model relates to the technical field of blanket back pre-ironing, concretely to a blanket back pre-ironing mechanism, including frame body and the cylinder of both ends top of X direction in frame body, the roller is erected in X direction in frame body, the inside even distribution of roller has a plurality of stainless steel heating pipe, the both ends of X direction of frame body all are equipped with Z direction guide rail, and the lifting mechanism is slidably connected along Z direction guide rail, the output end of cylinder connects lifting mechanism, the lifting mechanism includes setting the lifting mechanism crossbeam of Y direction of frame body, the slider of Z direction guide rail sliding connection located lifting mechanism crossbeam both ends and motor connecting plate connected with the output end of cylinder, second cloth guide roller is still equipped on lifting mechanism crossbeam, two connecting plates are equipped below lifting mechanism crossbeam, two connecting plates all are slidably connected with Z direction guide rail through the slider, and the first cloth guide roller is erected on connecting plate. Adjustable lifting mechanism and built-in heating roller, can directly adapt to the existing production line, solve the preheating compatibility problem in the production of multi-material carpet.

Description

Technical Field

[0001] This utility model relates to the field of blanket backing pre-ironing technology, and in particular to a blanket backing pre-ironing mechanism. Background Technology

[0002] The existing carpet production process mainly includes applying adhesive to the back of the carpet blank, laminating a secondary backing fabric, drying and curing, trimming the pile, inspection, and rolling and packaging. For materials such as nylon and polyester, preheating is not required before applying adhesive to the back and will not affect the quality of the carpet; however, for backing fabrics and pile yarns made primarily of polypropylene (polypropylene fiber), preheating is an essential step.

[0003] The primary purpose of preheating is not drying, but rather activating the backing surface of the blanket and optimizing adhesive conditions. If coating is performed without preheating, the latex will bead up on the polypropylene surface, failing to spread and penetrate effectively. After the latex cures, there is only weak physical adsorption between the adhesive layer and the backing fabric, making it easy to peel off, leading to severe lint shedding and backing separation quality problems. Preheating the polypropylene backing before coating softens the polypropylene fibers, allowing the latex to embed slightly. Simultaneously, the heat enhances the interaction between latex molecules and fibers; although no chemical bonds are formed, physical anchoring and van der Waals forces are significantly strengthened, sufficient to form a strong bond. Furthermore, different materials have different preheating temperature requirements; in production, infrared heaters or hot air circulating ovens are typically used, installed before the coating machine.

[0004] However, in carpet processing plants, a single production line often needs to process carpets of various materials. Due to space and cost constraints, most factories do not have the capacity to add multiple production lines to produce carpets of different materials. Therefore, we can only modify existing production lines to accommodate the processing needs of different carpet materials. Against this backdrop, how to add a preheating mechanism to the front end of the glue applicator on the existing production line to preheat the carpet backing that requires preheating, while also being compatible with the production of materials that do not require preheating, has become a pressing practical problem that needs to be solved. Utility Model Content

[0005] The purpose of this invention is to provide an adjustable preheating mechanism to solve the preheating compatibility problem in multi-material carpet production lines.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a blanket backing pre-ironing mechanism, comprising a frame and cylinders located at the top of both ends of the frame in the X direction, rollers being mounted inside the frame in the X direction; multiple stainless steel heating tubes being evenly distributed inside the rollers; Z-guide rails being provided at both ends of the frame in the X direction, and a lifting mechanism being slidably connected along the Z-guide rails; the output end of the cylinders being connected to the lifting mechanism; the lifting mechanism comprising a lifting mechanism beam disposed in the Y direction of the frame, sliders located at both ends of the lifting mechanism beam and slidably connected to the Z-guide rails, and a motor connecting plate connected to the output end of the cylinders; the lifting mechanism beam is also provided with at least two second guide rollers for guiding the carpet to move in the Y direction; two connecting plates are provided below the lifting mechanism beam, both of which are slidably connected to the Z-guide rails via sliders, and first guide rollers are mounted on the two connecting plates in the Y direction.

[0007] Preferably, the Z-guide rail includes a first guide rail and a second guide rail with identical structures; the first guide rail and the second guide rail are located on both sides of the frame in the Y direction.

[0008] Preferably, the first guide rail includes a guide rail base connected to the frame and a cylindrical slide rail detachably connected to the guide rail base, and the slider is provided with an arc groove that engages with the cylindrical slide rail.

[0009] Preferably, the side of the guide rail base connected to the cylindrical slide rail is provided with a minor arc groove, and the cylindrical slide rail is detachably connected to the guide rail base by bolts after being inserted into the minor arc groove.

[0010] Preferably, the frame is provided with support seats at both ends in the X direction, and the support seats are connected to roller support shafts. The two ends of the rollers are respectively sleeved on the corresponding roller support shafts.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows: The adjustable height of the lifting mechanism regulates the distance between the carpet and the rollers, which, in conjunction with the guide roller speed, enables preheating and activation of materials such as polypropylene that require preheating. For materials like nylon and polyester, preheating can be omitted or reduced, accommodating the needs of producing carpets of various materials on a single production line. The built-in stainless steel heating tubes of the rollers ensure high and uniform heat transfer efficiency. This mechanism can be directly installed before existing glue applicators, eliminating the need for new production lines and maximizing the use of existing lines, significantly saving factory space and equipment investment costs.

[0012] The lifting mechanism is driven by a cylinder, which responds quickly. The slider of the lifting mechanism is equipped with an arc groove that matches the cylindrical slide rail of the Z-axis guide rail. The arc groove and the cylindrical slide rail have an arc contact area, which improves the stability of the Z-axis sliding and makes the overall mechanism run stably. Attached Figure Description

[0013] Figure 1A front view of a blanket backing pre-ironing mechanism is provided for this utility model; Figure 2 The right view of a blanket backing pre-ironing mechanism is provided for this utility model; Figure 3 A top view of a blanket backing pre-ironing mechanism is provided for this utility model; Figure 4 This utility model Figure 3 Enlarged view of point A in the middle; Explanation of reference numerals in the attached drawings: 1. Frame; 2. Support base; 21. Roller support shaft; 3. Roller; 4. Stainless steel heating tube; 5. First guide roller; 51. First support; 6. Second guide roller; 61. Second support shaft; 7. Z-axis guide rail; 71. First guide rail; 72. Second guide rail; 73. Guide rail base; 74. Bolt groove; 75. Minor arc groove; 76. Cylindrical slide rail; 77. Bolt; 8. Lifting mechanism; 81. Lifting mechanism crossbeam; 82. Slider; 821. Major arc groove; 83. Connecting plate; 84. Motor connecting plate; 9. Cylinder. Detailed Implementation

[0014] To address the problems mentioned in the background art, a carpet backing preheating mechanism is added to the front end of the glue coating machine in the existing production line. This modification allows the production line to process both carpets requiring preheating and those that do not, achieving product diversification within the same production line at the lowest cost. This utility model provides a carpet backing preheating mechanism, such as... Figure 1 The front view shows a frame 1, with the length of the frame 1 in the X direction and the vertical direction of the frame 1 in the Z direction. Figure 2 The width of the middle frame 1 is in the Y direction. (Back) Figure 1 Cylinders 9 are installed at the top of both ends of the frame 1 in the X direction. The output end of the cylinder 9 is connected to the lifting mechanism 8. After the cylinder 9 is activated, it can push the lifting mechanism 8 to move in the Z direction. The movement of the lifting mechanism 8 in the Z direction is along the corresponding Z guide rail 7. Z guide rails 7 are installed at both ends of the frame 1 in the X direction. Rollers 3 are installed inside the frame 1 in the X direction. The rollers 3 are located inside the frame 1. Specifically, support seats 2 are installed at both ends of the frame 1 in the X direction. The support seats 2 are connected to roller support shafts 21. The two ends of the rollers 3 are respectively sleeved on the corresponding roller support shafts 21. One end of the roller support shaft 21 is connected to the support seat 2, and the other end passes into the inside of the roller 3. Figure 1The lifting mechanism 8 is also shown. The lifting mechanism 8 includes a lifting mechanism beam 81 positioned in the Y direction of the frame 1, sliders 82 located at both ends of the lifting mechanism beam 81 and slidably connected to the Z-guide rail 7, and a motor connecting plate 84 connected to the output end of the cylinder 9. A connecting plate 83 is located below the lifting mechanism beam 81, and the connecting plate 83 is slidably connected to the Z-guide rail 7 via another slider 82. First guide rollers 5 are mounted on the two connecting plates 83 in the Y direction, with both ends of the first guide rollers 5 mounted on the corresponding connecting plates 83 via first supports 51. Second guide rollers 6 are mounted on the two lifting mechanism beams 81 in the Y direction, with both ends of the second guide rollers 6 mounted on the corresponding lifting mechanism beams 81 via second support shafts 61. The first guide rollers 5 and second guide rollers 6 are used to guide the carpet in the Y direction.

[0015] Figure 2 This is a right view of the present invention; the figure shows that the roller support shaft 21 is engaged in the U-shaped groove on the support base 2 to provide support for the roller 3. The cross-section of the roller 3 shows that multiple stainless steel heating tubes 4 are evenly distributed inside. The Z-guide rail 7 includes a first guide rail 71 and a second guide rail 72 with the same structure; the first guide rail 71 and the second guide rail 72 are located on both sides of the frame 1 in the Y direction. The lifting mechanism 8 carries the first guide roller 5 and the second guide roller 6 and slides along the Z-guide rail 7 in the Z direction. There are two connecting plates 83, located on both sides of the lifting mechanism beam 81 in the Y direction, and each connecting plate 83 also moves on the Z-guide rail 7 through the slider 82 set on it. Each connecting plate 83 is connected to one end of the first guide roller 5. There are also two second guide rollers 6. The axes of the two second guide rollers 6 and the two first guide rollers 5 are rectangular, with the two second guide rollers 6 on top and the two first guide rollers 5 on the bottom. Figure 2 The solid arrow m indicates the path the carpet can take through the pre-ironing mechanism. The carpet passes the second guide roller 6 on the upper left and then the first guide roller 5 on the lower right. The carpet is inclined relative to the horizontal plane; this path increases the contact area between the carpet and roller 3, improving preheating efficiency. Imagine if the carpet traveled along the dashed arrow n in the direction x. Since dashed line n is horizontal within the frame 1, drawing a perpendicular line from the center of roller 3 to n yields the closest distance H on the carpet to the nearest roller 3. If the solid line m is used, since the solid line m is inclined within the frame 1, the closest distance from the center of the roller 3 to the nearest roller 3 on the carpet is h, which is significantly less than H. The point on the solid line m that is at least H away from the roller 3 has a length a between the point on the solid line m that is at least H away from the roller 3 and the point that is at least h away from the roller 3. The carpet with a length a is less than the closest distance from the roller 3. Therefore, using the solid line m can greatly increase the area of ​​the carpet in close proximity to the roller 3 and improve the heat exchange efficiency.

[0016] Figure 3This is a top view of the blanket backing pre-ironing mechanism of this utility model; the figure shows the cooperation relationship between the first guide rail 71, the second guide rail 72 and their respective sliders 82. The roller 3 is equipped with a stainless steel heating tube 4, and the frame 1 has support seats 2 at both ends in the X direction, and a roller support shaft 21 connected to the support seats 2. The other end of the roller support shaft 21 extends into the roller 3.

[0017] Figure 4 This utility model Figure 3 An enlarged schematic diagram at point A; the first guide rail 71 and the second guide rail 72 have the same structure. Taking the first guide rail 71 as an example... Figure 4 The diagram shows that the first guide rail 71 includes a guide rail base 73, a bolt groove 74, a minor arc groove 75, a cylindrical slide rail 76, and bolts 77. The guide rail base 73 is detachably connected to the frame 1 by bolts, and the guide rail base 73 is detachably connected to the cylindrical slide rail 76 by bolts 77. The bolt groove 74 is located on the side near the frame 1 to accommodate the end of the bolt 77. The minor arc groove 75 is provided on the side of the guide rail base 73 that connects to the cylindrical slide rail 76. After the cylindrical slide rail 76 is engaged in the minor arc groove 75, it is detachably connected to the guide rail base 73 by bolts 77. The slider 82 is provided with a major arc groove 821 that engages with the cylindrical slide rail 76. The major arc contact area between the major arc groove 821 and the cylindrical slide rail 76 improves the stability of the Z-axis sliding.

[0018] In use, this utility model mechanism is installed at the front end of the glue applicator in an existing carpet production line. A cylinder 9, a lifting mechanism 8, and a roller 3 are mounted on the frame 1, and connected to a power supply and an air source. Depending on the material of the carpet to be processed (e.g., polypropylene requires preheating, while nylon or polyester may not), the heating temperature of the stainless steel heating tube 4 is set, controlled between 200-300°C. The stainless steel heating tube 4 is activated to preheat the roller 3 to the required temperature; polypropylene typically requires heating to 80-120°C. The stroke of the cylinder 9 is adjusted to regulate the height of the lifting mechanism 8 on the Z-guide rail 7, thereby controlling the distance between the carpet and the roller 3. A smaller distance results in better preheating. The unfinished carpet is introduced into the frame 1 from the inlet, and the carpet travels along the Y-direction. The specific path is as follows... Figure 2As shown: The carpet first passes the second guide roller 6 on the upper left, then the first guide roller 5 on the lower right, forming an inclined path in the direction of the solid arrow m. The carpet then rubs against the preheating roller 3. This design increases the close contact area between the carpet back and the heating roller 3, improving heat transfer efficiency. Depending on the height changes required by the mechanism's front and rear workstations, the carpet can also pass the first guide roller 5 on the lower left, then the second guide roller 6 on the upper right, forming an inclined path. The cylinder 9 is activated, pushing the lifting mechanism 8 down along the Z-guide rail 7, bringing the carpet back close to the roller 3. The cylinder 9 drives the lifting mechanism beam 81 via the motor connecting plate 84, causing the first guide roller 5 and the second guide roller 6 to move synchronously, ensuring a stable carpet path. The carpet walking speed is determined by the production line process requirements, generally selected as 7 meters per minute. The slower the speed, the longer the preheating time, and the better the activation effect. If the preheating intensity needs adjustment, the height of the first guide roller 5 and the second guide roller 6 can be changed via the cylinder 9, or the carpet walking speed can be adjusted. For carpets that do not require preheating, raise the lifting mechanism 8 to move the carpet away from the rollers 3, or turn off the stainless steel heating tube 4.

[0019] During operation, the cylindrical slide rail 76 of the Z-guide rail 7 cooperates with the arc groove 821 of the slider 82 to ensure smooth lifting. After the cylinder 9 pushes open the lifting mechanism 8, the carpet backing on the first guide roller 5 and the second guide roller 6 is brought close to the roller 3 for heating. The roller 3 uses a stainless steel heating tube 4, thereby achieving a preheating effect. This structure is simple, easy to operate, and has significant effects, eliminating the need for infrared heaters or hot air circulating ovens. The adjustable lifting mechanism 8 and the built-in heating roller 3 enable distance and temperature adjustment for carpet backing preheating. Its compact structure can be directly adapted to existing production lines, solving the preheating compatibility problem in the production of carpets made of multiple materials.

Claims

1. A blanket backing pre-ironing mechanism, characterized in that: The frame includes a frame (1) and cylinders (9) located at the top of both ends of the frame (1) in the X direction. Rollers (3) are mounted inside the frame (1) in the X direction. Multiple stainless steel heating tubes (4) are evenly distributed inside the rollers (3). Z-guide rails (7) are provided at both ends of the frame (1) in the X direction. A lifting mechanism (8) is slidably connected along the Z-guide rails (7). The output end of the cylinders (9) is connected to the lifting mechanism (8). The lifting mechanism (8) includes a lifting mechanism crossbeam (81) set in the Y direction of the frame (1) and a lifting mechanism crossbeam (81) located in the lifting mechanism. The beam (81) has sliders (82) that are slidably connected to the Z-guide rail (7) at both ends, and motor connecting plate (84) that is connected to the output end of the cylinder (9); the lifting mechanism beam (81) is also provided with no less than two second guide rollers (6) for guiding the carpet to walk in the Y direction; two connecting plates (83) are provided below the lifting mechanism beam (81), and both connecting plates (83) are slidably connected to the Z-guide rail (7) through sliders (82), and the two connecting plates (83) in the Y direction are provided with first guide rollers (5).

2. The blanket backing pre-ironing mechanism according to claim 1, characterized in that: The Z-guide rail (7) includes a first guide rail (71) and a second guide rail (72) with the same structure; the first guide rail (71) and the second guide rail (72) are located on both sides of the frame (1) in the Y direction.

3. The blanket backing pre-ironing mechanism according to claim 2, characterized in that: The first guide rail (71) includes a guide rail base (73) connected to the frame (1) and a cylindrical slide rail (76) detachably connected to the guide rail base (73). The slider (82) is provided with an arc groove (821) that engages with the cylindrical slide rail (76).

4. The blanket backing pre-ironing mechanism according to claim 3, characterized in that: The guide rail base (73) is provided with a minor arc groove (75) on the side where it connects to the cylindrical slide rail (76). After the cylindrical slide rail (76) is inserted into the minor arc groove (75), it is detachably connected to the guide rail base (73) by bolts (77).

5. The blanket backing pre-ironing mechanism according to claim 1, characterized in that: The frame (1) has support seats (2) at both ends in the X direction. The support seats (2) are connected to roller support shafts (21). The rollers (3) are respectively sleeved on the corresponding roller support shafts (21).

Images