A roll device for point bonding a warm-keeping crocheted jean fabric and a production method thereof

Abstract

This invention relates to the field of denim fabric production technology and discloses a roller pressing device for dot-bonded thermal crochet denim fabric. The device includes a frame and thermal and denim fabrics passing through its top. A support mechanism is installed at the top of the frame, and a transmission mechanism rotates through the interior of the support mechanism. A negative pressure suction mechanism for adhering and wrinkle-preventing the thermal fabric is installed at the front end of the transmission mechanism. This invention uses a third electric push rod to drive an adjusting rod, which moves a piston plate inside the glue-applying box. This allows for the covering or opening of different numbers of glue-applying holes, thus adjusting the glue-applying width. This maintains the glue-applying range matching the fabric width, preventing glue from being applied to the outside of the fabric, avoiding glue waste and contamination of the frame, and ensuring fabric cleanliness and subsequent roller pressing quality.

Description

Technical Field

[0001] This invention relates to the field of denim fabric production technology, and in particular to a roller pressing device and production method for dot-bonded warm crochet denim fabric. Background Technology

[0002] Crochet denim fabric is widely used in the apparel industry. To improve the fabric's cold-weather performance, the industry generally adopts a composite process, where a layer of insulating filling is bonded to the inside of the denim base. Common filling materials include flexible insulating materials such as spray-bonded cotton and imitation silk cotton. At present, the composite processing mainly adopts a full-surface adhesive coating and hot-press bonding method. The adhesive is evenly applied between the two layers of fabric, and then a pair of pressure rollers are used to press the entire fabric together to achieve full bonding.

[0003] For example, Chinese patent CN105966042A discloses a quantitative dot-type fabric bonding machine, which includes a horizontally mounted, self-rotating glue-applying roller. A pair of upper and lower pressure rollers are mounted on the side of the glue-applying roller. The lower layer of fabric to be glued first wraps around the glue-applying roller and then passes between the upper and lower pressure rollers. This machine has a limited glue-applying range, making it impossible to adjust the glue-applying range according to the width of the fabric. This results in glue being applied to the outside of the fabric and adhering to the external frame, wasting glue and causing it to stick everywhere, affecting the cleanliness of the fabric and subsequent rolling.

[0004] Furthermore, some processing plants use manual dot-applying adhesive, where workers apply glue point by point using a template before feeding the fabric into the pressure rollers. It's difficult to maintain a uniform spacing between dots, resulting in inconsistent density of adhesive points and a tendency for localized delamination in the finished fabric. Manual operation is also slow, making it difficult to integrate with continuous fabric production lines, leading to low production efficiency.

[0005] Existing roller pressing devices for dot-bonded thermal crocheted denim fabrics cannot adjust the adhesive application range according to the fabric width. This results in adhesive being applied to the outside of the fabric and adhering to the outer frame, wasting adhesive and causing it to spread everywhere, affecting the cleanliness of the fabric and subsequent roller pressing. Moreover, most roller pressing devices use a uniform pressure method, which cannot differentiate the pressure according to the different needs of dot-bonded and non-bonded areas. For dot bonding, sufficient pressure is required at the bonding points to ensure that the adhesive fully impregnates the fibers, while non-bonded areas should avoid excessive pressure to prevent affecting the fabric's feel and fluffiness. It is also not convenient to set up corresponding roller pressing structures according to the spacing of the dot bonding points.

[0006] To address the aforementioned issues, a roller pressing device and its production method for dot-bonded, warm crochet denim fabric are proposed. Summary of the Invention

[0007] The purpose of this invention is to provide a roller pressing device and production method for dot-bonded warm crochet denim fabric, in order to solve the problems mentioned in the background art, namely that the existing glue coating mechanism cannot adjust the glue coating range according to the fabric width, resulting in glue overflow and contamination of the frame and fabric, and that the existing roller pressing device adopts a uniform pressure method, which cannot apply pressure differently to the dot-bonded area and the non-bonded area, thus affecting the fabric's hand feel and fluffiness.

[0008] To achieve the above objectives, the present invention provides: a roller pressing device for dot-bonded thermal crochet denim fabric, comprising a frame (1) and thermal fabric (12) and denim fabric (11) passing through its top end, a support mechanism (4) is installed at the top end of the frame (1), a transmission mechanism (9) is rotatably passed through the inside of the support mechanism (4), a negative pressure suction mechanism (7) for suctioning and wrinkle prevention of the thermal fabric (12) is installed at the front end of the transmission mechanism (9), a blower mechanism (8) for blowing air to cool down the thermal fabric (12) and the denim fabric (11) after roller pressing and bonding is installed at the rear end of the transmission mechanism (9), a roller pressing mechanism (5) for roller pressing and bonding the thermal fabric (12) and the denim fabric (11) is installed at the middle top end of the support mechanism (4), an adhesive applicator (6) is installed at the front end of the roller pressing mechanism (5), and a limiting mechanism (10) is installed on the inner side of the support mechanism (4). The support mechanism (4) includes a first side plate (41) fixed to both sides of the top of the frame (1). The transmission mechanism (9) includes a transmission belt (93) rotatably mounted between the two first side plates (41). The adhesive application mechanism (6) includes adhesive application components (61) spaced above the transmission belt (93). The roller pressing mechanism (5) includes a support roller assembly (52) slidably mounted between the two drive belts (93), and a pressure roller assembly (55) is provided at the top end of the support roller assembly (52).

[0009] Preferably, the frame (1) is fixed with support legs (14) at the four corners of its bottom end, and a controller (2) is fixedly installed on one side of its top end. The front end of the first side plate (41) is horizontally fixed with a second side plate (42), and a first unwinding roller (43) is installed between the two second side plates (42). The thermal insulation fabric (12) is rolled up and sleeved on the surface of the first unwinding roller (43), and its lead-out end is pulled out and slides horizontally over the top of the transmission belt (93). A third side plate (44) is obliquely fixed to the front end of the first side plate (41), and a second unwinding roller (45) is installed between the two third side plates (44). The denim fabric (11) is rolled up and sleeved on the surface of the second unwinding roller (45), and its lead-out end is pulled out and passes through the inner side of the limiting mechanism (10). The denim fabric (11) is bonded to the top of the thermal fabric (12). A fourth side plate (46) is obliquely fixed to the top rear end of the first side plate (41), and a take-up roller (47) is installed between the two fourth side plates (46). A first motor (48) is installed at one end of the take-up roller (47), and the first motor (48) is fixedly installed on the outside of the fourth side plate (46).

[0010] Preferably, a transmission roller (92) is rotatably mounted between the two first side plates (41), and a second motor (91) is mounted at one end of one of the transmission rollers (92). The second motor (91) is fixedly mounted on the outside of the first side plate (41), and the transmission belt (93) is rotatably mounted on the outside of the two transmission rollers (92). Ventilation holes (94) are evenly opened on the surface of the transmission belt (93). The limiting mechanism (10) includes a limiting plate (101) with a gap set at the top of the transmission belt (93). The limiting plate (101) is used to limit the sides of the thermal fabric (12) and the denim fabric (11) to prevent deviation. A first electric push rod (102) is horizontally installed in the middle of the outer side of the limiting plate (101). The first electric push rod (102) is fixed to the outer side of the first side plate (41). A first guide hole (104) is opened on the outer side of the first side plate (41) and on both sides of the first electric push rod (102). A first guide rod (103) is fixed at both ends of the outer side of the limiting plate (101) and slides horizontally through the inside of the first guide hole (104).

[0011] Preferably, the negative pressure suction mechanism (7) includes a first air guide box (74) inserted into the transmission belt (93). The top of the first air guide box (74) is evenly provided with negative pressure suction holes (75) for sucking the thermal insulation fabric (12) flat on the surface of the transmission belt (93) for sliding. A first cover plate (73) is tightly connected to one side of the first air guide box (74). A negative pressure suction tube (72) is connected to the middle of the side of the first cover plate (73). A negative pressure pump (71) is installed at the outer end of the negative pressure suction tube (72). The blower mechanism (8) includes a second air guide box (84) inserted into the transmission belt (93). The top of the second air guide box (84) is evenly provided with air holes (85) for dissipating heat and cooling the thermal insulation fabric (12) and the denim fabric (11) after roll bonding. A second cover plate (83) is tightly connected to one side of the second air guide box (84). An air guide pipe (82) is connected to the middle of the side of the second cover plate (83). A blower (81) is installed at the outer end of the air guide pipe (82). The first side plate (41) has a first mounting groove (76) at the front end of its side for inserting and installing the two ends of the first air guide box (74), and a second mounting groove (86) at the rear end of its side for inserting and installing the two ends of the second air guide box (84). The negative pressure pump (71) and the blower (81) are both fixedly installed on one side of the top of the frame (1). The first air guide box (74) and the second air guide box (84) are both hollow thin-walled rectangular plate structures.

[0012] Preferably, the glue application mechanism (6) further includes a first lifting component (63) installed on the top of the glue application assembly (61), and the two ends of the glue application assembly (61) are telescopically installed with adjustment components (62) for adjusting the glue application length. The first lifting assembly (63) includes a first support plate (633) horizontally fixed to the middle of the side of the support frame (51). A second electric push rod (634) is vertically installed at the bottom of the outer end of the first support plate (633). The first lifting plate (631) is fixed at the bottom output end of the second electric push rod (634). A second guide rod (632) is fixed at both ends of the bottom end of the first lifting plate (631). A first adjustment groove (635) is opened on the side of the first side plate (41) and at the front of the support frame (51). A second guide hole (636) is opened in the middle of the top of the first adjustment groove (635) for the second guide rod (632) to slide vertically through. The adhesive application assembly (61) includes an adhesive application box (611) that slides horizontally through the interior of the two first adjustment slots (635), and the bottom end of the adhesive application box (611) is evenly provided with adhesive application holes (612) for applying adhesive to the surface of the thermal insulation fabric (12). Telescopic plates (616) are telescopically installed on both sides of the glue application box (611). A glue-cutting plate (615) for cutting off the glue liquid is fixed at the bottom end of the telescopic plate (616). Both the telescopic plate (616) and the glue-cutting plate (615) are long strip structures and are combined to form an L-shaped cross-section. The glue-cutting plate (615) is horizontally slidably installed at the bottom end of the glue application box (611) and located on both sides of the glue application hole (612).

[0013] Preferably, the adjusting assembly (62) includes an adjusting rod (624) that is slidably inserted into the interior of both ends of the glue application box (611). A piston plate (622) is fixed to the inner end of the adjusting rod (624). A first tight plug (621) that is tightly inserted into the glue application box (611) is bonded to the inner side of the piston plate (622). A moving plate (627) is fixed to the outer end of the adjusting rod (624). A third electric push rod (628) is installed on the inner top of the moving plate (627). The third electric push rod (628) is horizontally fixed to the outer end of the first lifting plate (631). The first lifting plate (631) is horizontally positioned at the top of the first side plate (41), the moving plate (627) is vertically positioned on the outside of the first side plate (41), the glue box (611) is a hollow thin-walled rectangular plate structure and is horizontally positioned, with side covers (614) tightly installed at both ends of its open end, and a second tight plug (613) is glued to the inside of the side cover (614), and the second tight plug (613) is tightly inserted into the inside of both ends of the glue box (611); The adjusting rod (624) passes tightly through the side cover (614) and the second tight plug (613). The adjusting rod (624) has an adhesive inlet hole (623) inside. The adhesive inlet hole (623) passes through the bottom side of the moving plate (627), the adjusting rod (624), the piston plate (622) and the first tight plug (621), and communicates with the interior of the glue box (611). The outer end of the adhesive inlet hole (623) is fixed with an adhesive inlet pipe (626) that communicates with an external adhesive source. The adhesive inlet pipe (626) is fixed to the bottom outer side of the moving plate (627), and a control valve (625) is installed on its surface. The top two ends of the glue-applying box (611) are fixed with fifth side plates (13). The fifth side plates (13) are located inside the second guide rod (632). A guide roller (3) is installed between the two fifth side plates (13). The guide rollers (3) are horizontally spaced at the top of the glue-applying box (611). The denim fabric (11) slides through the bottom end of the guide roller (3).

[0014] Preferably, the roller pressing mechanism (5) further includes a support frame (51) fixed to the middle of the top of the first side plate (41), and a second lifting component (53) that slides through the top of the support frame (51) is installed at both ends of the pressure roller assembly (55). A driving lifting component (56) is provided between the top of the second lifting component (53) and the top of the support frame (51), and a driving rotation component (54) is provided between the bottom ends of the second lifting component (53) and the two ends of the pressure roller assembly (55). The support roller assembly (52) includes a second support plate (527) fixed between the two first side plates (41) and located directly below the support frame (51). The second support plate (527) has a groove (526) in the middle. The groove (526) is an arc-shaped groove structure. A support roller (522) is rotatably installed inside it. An elastic sleeve (521) is bonded to the surface of the support roller (522). The top end of the elastic sleeve (521) protrudes from the top end of the groove (526). A support rod (523) slides through the middle of the support roller (522). First mounting holes (525) are opened at both ends of the groove (526). Both ends of the support rod (523) slide through the first mounting holes (525), and a nut (524) is threaded to its outer end. The pressure roller assembly (55) includes pressure rollers (554) spaced directly above the support roller (522). The surface of the pressure roller (554) is uniformly provided with snap-fit ​​grooves (555). The pressure roller (554) is sleeved with an installation cylinder (551). The inner surface of the installation cylinder (551) is uniformly fixed with snap-fit ​​strips (553). The snap-fit ​​strips (553) slide into the snap-fit ​​grooves (555). Both the snap-fit ​​grooves (555) and the snap-fit ​​strips (553) are elongated structures. The outer surface of the installation cylinder (551) is uniformly fixed with pressing posts (552) for pressing between the thermal insulation fabric (12) and the denim fabric (11). The pressing posts (552) are cylindrical protrusions and correspond to the number and position of the glue application holes (612) for accurately pressing the glue application position.

[0015] Preferably, the drive rotation assembly (54) includes insertion slots (5410) at both ends of the pressure roller (554), and insertion posts (549) are slidably inserted into the insertion slots (5410). Both the insertion posts (549) and the insertion slots (5410) are rectangular slot structures, and a rotating post (546) is fixed to the outer end of the insertion post (549). A third support plate (544) is slidably mounted on the outer end surface of the rotating column (546). The side of the third support plate (544) has a rotating hole (543) for the rotating column (546) to rotate through. A first limiting ring (547) is fixed on the surface of the rotating column (546) and at the positions on both sides of the rotating hole (543). The outer end of the rotating column (546) is fixed with a driven gear (548), the top end of the driven gear (548) is meshed with a driving gear (542), the top end of the third support plate (544) is fixedly mounted with a fourth motor (541), and the driving gear (542) is mounted on the output shaft outside the fourth motor (541).

[0016] Preferably, the second lifting assembly (53) includes a second adjusting groove (536) opened at the bottom of both sides of the support frame (51). The second adjusting groove (536) is a rectangular groove structure and is vertically arranged. The rotating column (546) slides horizontally through the second adjusting groove (536). The third support plate (544) is vertically slidably installed on the outside of the second adjusting groove (536). An installation ring (534) is slidably sleeved on the surface of the rotating column (546) at a position located inside the second adjusting groove (536). A tension spring (545) is connected between the outside of the installation ring (534) and the inside of the third support plate (544). The tension spring (545) slides through the second adjusting groove (536). The support frame (51) is a C-shaped structure and is vertically arranged. It has a third guide hole (535) at both ends of its top. A third guide rod (533) slides through the inside of the third guide hole (535). The third guide rod (533) slides vertically through the third guide hole (535). Its bottom end is fixedly connected to the top of the mounting ring (534). A second lifting plate (531) is fixed between the top ends of the two third guide rods (533). The drive lifting assembly (56) includes a drive hole (532) opened in the middle of the top of the second lifting plate (531). The drive hole (532) is a threaded hole structure. A drive column (561) rotates through the inside of the drive hole (532). The drive column (561) is a threaded column structure. A second mounting hole (567) is opened in the middle of the top of the support frame (51). The bottom end of the drive column (561) passes through the second mounting hole (567). A second limiting ring (563) is fixed on its surface and at the positions above and below the second mounting hole (567). A worm gear (562) is fixed on the surface of the drive column (561) and at the top of the support frame (51). A worm (565) is meshed on one side of the worm gear (562). Sixth side plates (566) are fixed on both sides of the top of the support frame (51). The two ends of the worm (565) are rotatably mounted between the two sixth side plates (566). A third motor (564) is mounted on one end of the worm. The third motor (564) is fixedly mounted on the outer top of the sixth side plate (566).

[0017] A method for producing dot-bonded, warm crochet denim fabric, using the aforementioned roller pressing device, includes the following steps: S1. Unwinding: The rolled thermal insulation fabric (12) is fitted onto the surface of the first unwinding roller (43), the lead-out end of the thermal insulation fabric (12) is pulled out and placed horizontally on the surface of the transmission belt (93); the rolled denim fabric (11) is fitted onto the surface of the second unwinding roller (45), the lead-out end of the denim fabric (11) is pulled out and passes through the bottom end of the guide roller (3); S2, Limiting: Based on the width of the thermal fabric (12) and the denim fabric (11), start the first electric push rod (102) to push the limiting plate (101) to move to the positions on both sides of the fabric and limit the fabric on both sides; S3, suction: Start the negative pressure pump (71) and use the negative pressure suction hole (75) at the top of the first air guide box (74) to suction the thermal fabric (12) onto the surface of the transmission belt (93); S4. Adjust the glue application position: According to the width of the fabric, start the third electric push rod (628), and drive the piston plate (622) and glue-cutting plate (615) to move through the adjusting rod (624), and adjust the number of openings of the glue application hole (612) at the bottom of the glue application box (611) to control the glue application width; start the second electric push rod (634) to adjust the distance between the glue application box (611) and the thermal insulation fabric (12); S5. Applying adhesive: Open the control valve (625), and the adhesive enters the adhesive box (611) from the adhesive inlet pipe (626) and flows out from the adhesive hole (612) to be applied to the surface of the thermal insulation fabric (12). S6. Adjust the roller pressure position: The heat insulation fabric (12) after being coated with glue moves to the top of the support roller assembly (52) along with the transmission belt (93). The denim fabric (11) is guided by the guide roller (3) and then covers the top of the heat insulation fabric (12). Start the third motor (564) and drive the second lifting plate (531) through the worm gear (562) and worm (565) to drive the pressure roller assembly (55) to descend, so that the pressing column (552) is pressed at the glue application point. S7, Rolling: Start the fourth motor (541), drive the pressure roller (554) to rotate through the drive gear (542) and driven gear (548) to continuously roll and bond the two layers of fabric; S8, Heat dissipation by blowing air: The bonded fabric is moved above the blower mechanism (8), the blower (81) is started, and the bonded area is cooled through the air hole (85) at the top of the second air guide box (84); S9. Winding: Start the first motor (48) to drive the winding roller (47) to wind up the finished fabric.

[0018] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, the third electric push rod drives the adjusting rod, which in turn moves the piston plate inside the glue coating box. This allows for the covering or opening of different numbers of glue coating holes, thus adjusting the glue coating width. Furthermore, the glue cutting plate is horizontally slidably installed at the bottom of the glue coating box and located on both sides of the glue coating holes. This intermittently cuts off the glue liquid, thereby maintaining the glue coating range in line with the fabric width, preventing the glue liquid from being applied to the outside of the fabric, avoiding glue waste and contamination of the machine frame, and ensuring the cleanliness of the fabric and the quality of subsequent rolling.

[0019] 2. In this invention, pressing columns are uniformly fixed on the outer surface of the mounting cylinder. The pressing columns are cylindrical protrusions that correspond to the number and position of the adhesive application holes, so that the pressure is applied only to the adhesive application points. Moreover, the elastic sleeve provides elastic buffering during pressing, making the pressure distribution more uniform. This achieves precise pressure on the point-bonding areas, ensuring that there is sufficient pressure at the bonding points to allow the adhesive to fully impregnate the fibers, while avoiding excessive pressure on non-bonding areas, thereby maintaining the fluffiness and feel of the fabric. At the same time, a worm gear and worm shaft structure is used to drive the second lifting plate. The worm gear and worm shaft have a self-locking function, which can keep the pressure roller assembly in a stable position after adjustment, avoiding pressure changes caused by fluctuations in fabric thickness and ensuring the consistency of bonding quality. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the frame, limiting mechanism, support mechanism, transmission mechanism, and support frame of the present invention. Figure 3 This is a schematic diagram of the support mechanism and support frame of the present invention. Figure 4 This is a schematic diagram of the enlarged portion at point A of the present invention; Figure 5 This is a schematic diagram of the roller pressing mechanism of the present invention; Figure 6 This is a partial structural diagram of the second lifting assembly and the drive rotation assembly of the present invention; Figure 7 This is a partial structural diagram of the drive rotation assembly and pressure roller assembly of the present invention; Figure 8 This is a schematic diagram of the driven gear, rotating column, and plug-in column of the present invention. Figure 9 This is a schematic diagram of the pressure roller and the insertion groove of the present invention; Figure 10 This is a schematic diagram of the mounting cylinder and crimping column of the present invention; Figure 11 This is a partial structural diagram of the support roller assembly of the present invention; Figure 12This is a schematic diagram of the adhesive coating mechanism and guide roller of the present invention; Figure 13 This is a partial structural diagram of the first lifting assembly and the adhesive application assembly of the present invention; Figure 14 This is a schematic diagram of the adjustment component and side cover portion of the present invention; Figure 15 This is a schematic diagram of the structure of the glue-breaking plate portion of the present invention; Figure 16 This is a schematic diagram of a portion of the negative pressure suction mechanism of the present invention; Figure 17 This is a schematic diagram of the blower mechanism of the present invention.

[0021] Legend: 1. Frame; 2. Controller; 3. Guide rollers; 4. Support mechanism; 41. First side plate; 42. Second side plate; 43. First unwinding roller; 44. Third side plate; 45. Second unwinding roller; 46. Fourth side plate; 47. Rewinding roller; 48. First motor; 5. Roller pressing mechanism; 51. Support frame; 52. Support roller assembly; 521. Elastic sleeve; 522. Support roller; 523. Support rod; 524. Nut; 525. First mounting hole; 526. Groove; 527. Second support plate; 53. Second lifting assembly; 531. Second lifting plate; 532. Drive hole; 533. Third guide rod; 534. Mounting ring; 535. Third guide hole; 536. Second adjusting groove; 54. Drive rotation assembly; 541. Fourth motor; 542. Drive gear; 543. Rotation hole; 544. Third support plate; 545. Tension spring; 546. Rotation column; 547. First limit ring; 548. Driven gear; 549. Insertion column; 5410. Insertion slot; 55. Pressure roller assembly; 551. Mounting cylinder; 552. Pressing post; 553. Clip strip; 554. Pressure roller; 555. Clip groove; 56. Drive lifting assembly; 561. Drive column; 562. Worm gear; 563. Second limit ring; 564. Third motor; 565. Worm; 566. Sixth side plate; 567. Second mounting hole; 6. Glue application mechanism; 61. Glue application assembly; 611. Glue application box; 612. Glue application hole; 613. Second tight plug; 614. Side cover; 615. Glue cut-off plate; 616. Telescopic plate; 62. Adjusting assembly; 621. First sealing plug; 622. Piston plate; 623. Inlet port; 624. Adjusting rod; 625. Control valve; 626. Inlet tube; 627. Moving plate; 628. Third electric push rod; 63. First lifting assembly; 631. First lifting plate; 632. Second guide rod; 633. First support plate; 634. Second electric push rod; 635. First adjusting groove; 636. Second guide hole; 7. Negative pressure suction mechanism; 71. Negative pressure pump; 72. Negative pressure suction pipe; 73. First cover plate; 74. First air guide box; 75. Negative pressure suction hole; 76. First mounting groove; 8. Air blowing mechanism; 81. Blower; 82. Air duct; 83. Second cover plate; 84. Second air duct box; 85. Air blowing hole; 86. Second mounting slot; 9. Transmission mechanism; 91. Second motor; 92. Transmission roller; 93. Transmission belt; 94. Ventilation hole; 10. Limiting mechanism; 101. Limiting plate; 102. First electric push rod; 103. First guide rod; 104. First guide hole; 11. Denim fabric; 12. Warm fabric; 13. Fifth side panel; 14. Support leg. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Reference Figures 1 to 17 An embodiment of the present invention is provided: a roller pressing device for dot-bonded thermal crocheted denim fabric, comprising a frame (1) and thermal fabric (12) and denim fabric (11) passing through its top end, characterized in that: a support mechanism (4) is installed at the top end of the frame (1), a transmission mechanism (9) is rotatably passed through the inside of the support mechanism (4), a negative pressure suction mechanism (7) for suctioning and wrinkle prevention of the thermal fabric (12) is installed at the front end of the transmission mechanism (9), a blower mechanism (8) for blowing air to cool down the thermal fabric (12) and the denim fabric (11) after roller pressing and bonding is installed at the rear end of the transmission mechanism (9), a roller pressing mechanism (5) for roller pressing and bonding the thermal fabric (12) and the denim fabric (11) is installed at the middle top end of the support mechanism (4), an adhesive applicator (6) is installed at the front end of the roller pressing mechanism (5), and a limit mechanism (10) is installed on the inner side of the support mechanism (4).

[0024] Among them, the frame (1) has support legs (14) fixed at the four corners of the bottom end, and a controller (2) is fixedly installed on one side of its top end.

[0025] In detail, the support mechanism (4) includes a first side plate (41) fixed to both sides of the top of the frame (1), a second side plate (42) is horizontally fixed to the front end of the first side plate (41), a first unwinding roller (43) is installed between the two second side plates (42), the thermal insulation fabric (12) is rolled up and sleeved on the surface of the first unwinding roller (43), and its lead-out end is pulled out and slides horizontally over the top of the transmission belt (93).

[0026] Furthermore, a third side plate (44) is obliquely fixed to the top end of the front end of the first side plate (41), and a second unwinding roller (45) is installed between the two third side plates (44). The denim fabric (11) is rolled up and sleeved on the surface of the second unwinding roller (45), and its lead-out end is pulled out and passes through the inner side of the limiting mechanism (10). The denim fabric (11) is bonded to the top end of the thermal fabric (12).

[0027] The first side plate (41) is inclinedly fixed to the top of the rear end of the first side plate (41), and a take-up roller (47) is installed between the two fourth side plates (46). A first motor (48) is installed at one end of the take-up roller (47), and the first motor (48) is fixedly installed on the outside of the fourth side plate (46).

[0028] It should be noted that the first unwinding roller 43 and the second unwinding roller 45 are used to release the thermal fabric 12 and the denim fabric 11, respectively, and the take-up roller 47, driven by the first motor 48, rolls up the finished fabric into a roll to achieve continuous production.

[0029] In detail, the transmission mechanism (9) includes a transmission belt (93) rotatably mounted between two first side plates (41), a transmission roller (92) rotatably mounted between the two first side plates (41), a second motor (91) mounted at one end of one of the transmission rollers (92), the second motor (91) being fixedly mounted on the outside of the first side plate (41), the transmission belt (93) being rotatably mounted on the outside of the two transmission rollers (92), and ventilation holes (94) being evenly opened on the surface of the transmission belt (93).

[0030] In detail, the limiting mechanism (10) includes a limiting plate (101) with a gap set at the top of the transmission belt (93). The limiting plate (101) is used to limit the sides of the thermal fabric (12) and the denim fabric (11) to prevent deviation. A first electric push rod (102) is horizontally installed in the middle of the outer side of the limiting plate (101). The first electric push rod (102) is fixed to the outer side of the first side plate (41). A first guide hole (104) is opened on the outer side of the first side plate (41) and on both sides of the first electric push rod (102). A first guide rod (103) is fixed at both ends of the outer side of the limiting plate (101) and slides horizontally through the inside of the first guide hole (104).

[0031] It should be noted that the second motor 91 drives the transmission roller 92 to rotate, and the transmission roller 92 drives the transmission belt 93 to rotate in a cycle, providing power for the fabric conveying; the ventilation hole 94 allows the suction force generated by the negative pressure suction mechanism 7 and the cooling air generated by the blower mechanism 8 to act on the fabric through the transmission belt 93; the first electric push rod 102 pushes the limiting plate 101 to move horizontally along the direction of the first guide rod 103, and the distance between the two limiting plates 101 can be adjusted according to the actual width of the fabric, so that the fabric is always restricted to the inside of the limiting plate 101 during the conveying process, preventing the fabric from running off-center.

[0032] In detail, the negative pressure suction mechanism (7) includes a first air guide box (74) inserted into the transmission belt (93). The top of the first air guide box (74) is evenly provided with negative pressure suction holes (75) for sucking the thermal insulation fabric (12) flat on the surface of the transmission belt (93) for sliding. A first cover plate (73) is tightly connected to one side of the first air guide box (74). A negative pressure suction tube (72) is connected to the middle of the side of the first cover plate (73). A negative pressure pump (71) is installed at the outer end of the negative pressure suction tube (72).

[0033] In detail, the blower mechanism (8) includes a second air guide box (84) inserted into the transmission belt (93). The top of the second air guide box (84) is evenly provided with air holes (85) for dissipating heat and cooling the thermal insulation fabric (12) and the denim fabric (11) after roll bonding. A second cover plate (83) is tightly connected to one side of the second air guide box (84). An air guide pipe (82) is connected to the middle of the side of the second cover plate (83). A blower (81) is installed at the outer end of the air guide pipe (82).

[0034] The first side plate (41) has a first mounting groove (76) at the front end of its side for inserting and installing the two ends of the first air guide box (74), and a second mounting groove (86) at the rear end of its side for inserting and installing the two ends of the second air guide box (84). The negative pressure pump (71) and the blower (81) are both fixedly installed on one side of the top of the frame (1). The first air guide box (74) and the second air guide box (84) are both hollow thin-walled rectangular plate structures.

[0035] It should be noted that the negative pressure pump 71 evacuates the inside of the first air guide box 74 through the negative pressure suction pipe 72 and the first cover plate 73. The adsorption force generated at the negative pressure suction hole 75 acts on the thermal insulation fabric 12 through the ventilation hole 94, so as to flatly adsorb the thermal insulation fabric 12 onto the surface of the transmission belt 93 and prevent the fabric from wrinkling or shifting during the conveying process.

[0036] Furthermore, the blower 81 sends air into the second air guide box 84 through the air guide pipe 82 and the second cover plate 83, blows it upward from the air blowing hole 85, and blows it through the ventilation hole 94 onto the composite fabric after roller pressing and bonding, cooling down the adhesive at the bonding point, promoting the rapid curing of the adhesive and improving the bonding strength.

[0037] In detail, the glue application mechanism (6) includes glue application components (61) spaced above the transmission belt (93), and also includes a first lifting component (63) installed on the top of the glue application component (61). Adjustment components (62) for adjusting the glue application length are telescopically installed at both ends of the glue application component (61).

[0038] The first lifting assembly (63) includes a first support plate (633) horizontally fixed to the middle of the side of the support frame (51). A second electric push rod (634) is vertically installed at the bottom of the outer end of the first support plate (633). A first lifting plate (631) is fixed at the bottom output end of the second electric push rod (634). A second guide rod (632) is fixed at both ends of the bottom end of the first lifting plate (631). A first adjustment groove (635) is opened on the side of the first side plate (41) and at the front of the support frame (51). A second guide hole (636) is opened at the middle of the top of the first adjustment groove (635) for the second guide rod (632) to slide vertically through.

[0039] Furthermore, the adhesive application assembly (61) includes an adhesive application box (611) that slides horizontally through the interior of the two first adjustment slots (635), and the bottom end of the adhesive application box (611) is uniformly provided with adhesive application holes (612) for applying adhesive to the surface of the thermal insulation fabric (12).

[0040] Furthermore, telescopic plates (616) are telescopically installed on both sides of the glue application box (611), and a glue-cutting plate (615) for cutting off the glue liquid is fixed at the bottom end of the telescopic plate (616). Both the telescopic plate (616) and the glue-cutting plate (615) are long strip structures and are combined to form an L-shaped structure. The glue-cutting plate (615) is horizontally slidably installed at the bottom end of the glue application box (611) and located on both sides of the glue application hole (612).

[0041] It should be noted that the glue application box 611 can slide up and down along the first adjustment groove 635, and the glue application box 611 moves up and down synchronously with the first lifting plate 631, thereby adjusting the distance between the bottom of the glue application box 611 and the surface of the thermal insulation fabric 12 and controlling the amount of glue applied.

[0042] Furthermore, after the adhesive flows out of the coating hole 612, it is applied to the surface of the thermal insulation fabric 12 to form dot-like adhesive dots. When the third electric push rod 628 pushes the telescopic plate 616 to move horizontally, the telescopic plate 616 drives the glue-cutting plate 615 to slide horizontally at the bottom of the coating box 611. As the glue-cutting plate 615 slides, the adhesive in the coating hole 612 is intermittently cut off and intermittently drips onto the bonding position on the surface of the thermal insulation fabric 12 below. The glue-cutting plate 615 can intermittently seal the coating hole 612, so that the adhesive cannot flow out from the sealed coating hole 612, preventing the adhesive from being applied to the outside of the fabric, avoiding adhesive waste and contamination of the frame 1, and ensuring the cleanliness of the fabric and the quality of subsequent rolling.

[0043] In detail, the adjustment assembly (62) includes an adjustment rod (624) that is slidably inserted into the inside of both ends of the glue application box (611). A piston plate (622) is fixed to the inner end of the adjustment rod (624). A first tight plug (621) that is tightly inserted into the glue application box (611) is bonded to the inner side of the piston plate (622). A moving plate (627) is fixed to the outer end of the adjustment rod (624). A third electric push rod (628) is installed on the inner top of the moving plate (627). The third electric push rod (628) is horizontally fixed to the outer end of the first lifting plate (631).

[0044] The first lifting plate (631) is horizontally positioned at the top of the first side plate (41), the moving plate (627) is vertically positioned on the outside of the first side plate (41), the glue box (611) is a hollow thin-walled rectangular plate structure and is horizontally positioned, with side covers (614) tightly installed at both ends of the open end, and a second tight plug (613) is glued to the inside of the side cover (614), and the second tight plug (613) is tightly inserted into the inside of both ends of the glue box (611).

[0045] Furthermore, the adjusting rod (624) passes tightly through the side cover (614) and the second tight plug (613). The adjusting rod (624) has an adhesive inlet hole (623) inside. The adhesive inlet hole (623) passes through the bottom side of the moving plate (627), the adjusting rod (624), the piston plate (622) and the first tight plug (621), and communicates with the interior of the glue box (611). The outer end of the adhesive inlet hole (623) is fixed with an adhesive inlet pipe (626) that communicates with an external adhesive source. The adhesive inlet pipe (626) is fixed to the bottom outer side of the moving plate (627), and a control valve (625) is installed on its surface.

[0046] Moreover, the top two ends of the glue-applying box (611) are fixed with fifth side plates (13), the fifth side plates (13) are located inside the second guide rod (632), and guide rollers (3) are installed between the two fifth side plates (13). The guide rollers (3) are horizontally spaced at the top of the glue-applying box (611), and the denim fabric (11) slides through the bottom end of the guide rollers (3).

[0047] It should be noted that when the third electric push rod 628 extends or retracts, it pushes the moving plate 627 to move horizontally. The moving plate 627 drives the adjusting rod 624 to slide horizontally inside the glue application box 611. The piston plate 622 at the inner end of the adjusting rod 624 moves synchronously with the adjusting rod 624. The first tight plug 621 fits tightly against the inner wall of the glue application box 611 to prevent glue from leaking from the gap between the piston plate 622 and the inner wall of the glue application box 611. When the piston plates 622 on both sides move towards each other, the effective space inside the glue application box 611 that can be used to hold glue is reduced. At the same time, the piston plates 622 cover the glue application holes 612 from both ends of the glue application box 611 inward. The covered glue application holes 612 no longer dispense glue, and the glue application width is reduced. When the piston plates 622 on both sides move away from each other, the number of glue application holes 612 exposed increases, and the glue application width increases.

[0048] Furthermore, the glue inlet tube 626 is connected to an external glue source, and after the control valve 625 is opened, the glue enters the glue coating box 611 through the glue inlet hole 623.

[0049] In detail, the roller pressing mechanism (5) includes a support roller assembly (52) slidably installed between the two transmission belts (93), and a pressure roller assembly (55) is provided at the top end of the support roller assembly (52); the roller pressing mechanism (5) also includes a support frame (51) fixed to the middle of the top end of the first side plate (41), and a second lifting assembly (53) is installed at the top ends of both ends of the pressure roller assembly (55) and slides through the top end of the support frame (51). A driving lifting assembly (56) is provided between the top end of the second lifting assembly (53) and the top end of the support frame (51), and a driving rotation assembly (54) is provided between the bottom ends of both ends of the second lifting assembly (53) and the two ends of the pressure roller assembly (55).

[0050] The support roller assembly (52) includes a second support plate (527) fixed between the two first side plates (41) and located directly below the support frame (51). The second support plate (527) has a groove (526) in the middle. The groove (526) is an arc-shaped groove structure. A support roller (522) is rotatably installed inside it. An elastic sleeve (521) is bonded to the surface of the support roller (522). The top end of the elastic sleeve (521) protrudes from the top end of the groove (526). A support rod (523) slides through the middle of the support roller (522). First mounting holes (525) are opened at both ends of the groove (526). Both ends of the support rod (523) slide through the first mounting holes (525), and a nut (524) is threaded to its outer end.

[0051] Furthermore, the pressure roller assembly (55) includes pressure rollers (554) spaced directly above the support roller (522). The surface of the pressure roller (554) is uniformly provided with snap-fit ​​grooves (555). The pressure roller (554) is fitted with an installation cylinder (551). The inner surface of the installation cylinder (551) is uniformly fixed with snap-fit ​​strips (553). The snap-fit ​​strips (553) slide into the snap-fit ​​grooves (555). Both the snap-fit ​​grooves (555) and the snap-fit ​​strips (553) are elongated structures. The outer surface of the installation cylinder (551) is uniformly fixed with pressing posts (552) for pressing between the thermal insulation fabric (12) and the denim fabric (11). The pressing posts (552) are cylindrical protrusions and correspond to the number and position of the glue application holes (612) for accurately pressing the glue application position.

[0052] It should be noted that the elastic sleeve 521 undergoes elastic deformation during pressing, which buffers and evenly distributes the pressure, preventing pressure concentration from damaging the fabric. When the pressure roller 554 rotates, it drives the mounting cylinder 551 to rotate synchronously. The position and number of the pressing pins 552 correspond one-to-one with the glue application holes 612. When the pressing pins 552 rotate with the pressure roller 554 to the lowest point, they apply pressure to the two layers of fabric. The pressure is only applied to the glue application point and does not apply pressure to the non-glue area, maintaining the fluffiness of the non-adhesive area.

[0053] In detail, the drive rotation assembly (54) includes insertion slots (5410) at both ends of the pressure roller (554). Insertion pins (549) are slidably inserted into the insertion slots (5410). Both the insertion pins (549) and the insertion slots (5410) are rectangular slot structures. A rotating pin (546) is fixed to the outer end of the insertion pins (549).

[0054] The outer end surface of the rotating column (546) is slidably mounted with a third support plate (544), and the side of the third support plate (544) has a rotating hole (543) for the rotating column (546) to rotate through. A first limiting ring (547) is fixed on the surface of the rotating column (546) and at the positions on both sides of the rotating hole (543).

[0055] Furthermore, a driven gear (548) is fixed to the outer end of the rotating column (546), and a driving gear (542) is meshed with the top of the driven gear (548). A fourth motor (541) is fixedly installed on the top of the third support plate (544), and the driving gear (542) is installed on the output shaft outside the fourth motor (541).

[0056] It should be noted that the insertion post 549 and the pressure roller 554 are fixed in the circumferential direction. When the insertion post 549 rotates, it drives the pressure roller 554 to rotate synchronously. At the same time, the insertion post 549 can slide axially in the insertion groove 5410, which facilitates the installation and removal of the pressure roller 554.

[0057] Moreover, when the fourth motor 541 starts, it drives the driven gear 548 to rotate through the driving gear 542, and then drives the pressure roller 554 to rotate through the rotating column 546 and the plug-in column 549; the third support plate 544 moves up and down with the second lifting assembly 53, driving the pressure roller assembly 55 to rise and fall as a whole.

[0058] In detail, the second lifting assembly (53) includes a second adjustment groove (536) opened at the bottom of both sides of the support frame (51). The second adjustment groove (536) is a rectangular groove structure and is vertically arranged. The rotating column (546) slides horizontally through the second adjustment groove (536). The third support plate (544) is vertically slidably installed on the outside of the second adjustment groove (536). An installation ring (534) is slidably sleeved on the surface of the rotating column (546) and at a position inside the second adjustment groove (536). A tension spring (545) is connected between the outside of the installation ring (534) and the inside of the third support plate (544). The tension spring (545) slides through the second adjustment groove (536).

[0059] The support frame (51) is a C-shaped structure and is vertically arranged. It has a third guide hole (535) at both ends of its top. A third guide rod (533) slides through the inside of the third guide hole (535). The third guide rod (533) slides vertically through the third guide hole (535) and its bottom end is fixedly connected to the top of the mounting ring (534). A second lifting plate (531) is fixed between the top ends of the two third guide rods (533).

[0060] Furthermore, the drive lifting assembly (56) includes a drive hole (532) opened in the middle of the top of the second lifting plate (531). The drive hole (532) is a threaded hole structure. A drive column (561) rotates through the inside of the drive hole (532). The drive column (561) is a threaded column structure. A second mounting hole (567) is opened in the middle of the top of the support frame (51). The bottom end of the drive column (561) passes through the second mounting hole (567). A second limiting ring (563) is fixed on its surface and at the positions above and below the second mounting hole (567).

[0061] Furthermore, a worm gear (562) is fixed on the surface of the drive column (561) and at the top of the support frame (51). A worm (565) is meshed on one side of the worm gear (562). Sixth side plates (566) are fixed on both sides of the top of the support frame (51). The two ends of the worm (565) are rotatably mounted between the two sixth side plates (566). A third motor (564) is mounted on one end of the worm. The third motor (564) is fixedly mounted on the outer top of the sixth side plate (566).

[0062] It should be noted that the tension of the tension spring 545 keeps the third support plate 544 and the mounting ring 534 in an elastic connection; the third motor 564 drives the worm gear 565 to rotate, the worm gear 565 drives the worm wheel 562 to rotate, the worm wheel 562 drives the drive column 561 to rotate, and when the drive column 561 rotates, it drives the second lifting plate 531 to move vertically through the threaded engagement. The second lifting plate 531 drives the mounting ring 534 to rise and fall through the third guide rod 533, which in turn drives the pressure roller assembly 55 to rise and fall, adjusting the distance between the pressure roller 554 and the support roller 522. Moreover, the transmission pair composed of the worm wheel 562 and the worm gear 565 has a self-locking characteristic. When the third motor 564 stops working, the pressure roller assembly 55 remains in the current position and will not be displaced due to gravity or the reaction force of the fabric.

[0063] A method for producing dot-bonded, warm crochet denim fabric, using the aforementioned roller pressing device, includes the following steps: S1. Unwinding: The rolled thermal insulation fabric (12) is fitted onto the surface of the first unwinding roller (43), the lead-out end of the thermal insulation fabric (12) is pulled out and placed horizontally on the surface of the transmission belt (93); the rolled denim fabric (11) is fitted onto the surface of the second unwinding roller (45), the lead-out end of the denim fabric (11) is pulled out and passes through the bottom end of the guide roller (3); S2, Limiting: Based on the width of the thermal fabric (12) and the denim fabric (11), start the first electric push rod (102) to push the limiting plate (101) to move to the positions on both sides of the fabric and limit the fabric on both sides; S3, suction: Start the negative pressure pump (71) and use the negative pressure suction hole (75) at the top of the first air guide box (74) to suction the thermal fabric (12) onto the surface of the transmission belt (93); S4. Adjust the glue application position: According to the width of the fabric, start the third electric push rod (628), and drive the piston plate (622) and glue-cutting plate (615) to move through the adjusting rod (624), and adjust the number of openings of the glue application hole (612) at the bottom of the glue application box (611) to control the glue application width; start the second electric push rod (634) to adjust the distance between the glue application box (611) and the thermal insulation fabric (12); S5. Applying adhesive: Open the control valve (625), and the adhesive enters the adhesive box (611) from the adhesive inlet pipe (626) and flows out from the adhesive hole (612) to be applied to the surface of the thermal insulation fabric (12). S6. Adjust the roller pressure position: The heat insulation fabric (12) after being coated with glue moves to the top of the support roller assembly (52) along with the transmission belt (93). The denim fabric (11) is guided by the guide roller (3) and then covers the top of the heat insulation fabric (12). Start the third motor (564) and drive the second lifting plate (531) through the worm gear (562) and worm (565) to drive the pressure roller assembly (55) to descend, so that the pressing column (552) is pressed at the glue application point. S7, Rolling: Start the fourth motor (541), drive the pressure roller (554) to rotate through the drive gear (542) and driven gear (548) to continuously roll and bond the two layers of fabric; S8, Heat dissipation by blowing air: The bonded fabric is moved above the blower mechanism (8), the blower (81) is started, and the bonded area is cooled through the air hole (85) at the top of the second air guide box (84); S9. Winding: Start the first motor (48) to drive the winding roller (47) to wind up the finished fabric. Specific implementation process and principle explanation: Before the equipment is started, the operator sets the position of the limiting mechanism 10 according to the width of the fabric to be processed through the controller 2. The first electric push rod 102 is started, and the limiting plate 101 is pushed to move horizontally to the two sides of the fabric under the guidance of the first guide rod 103 and the first guide hole 104, so as to ensure that the fabric always travels in a straight line during the conveying process and will not be laterally deviated.

[0064] Then, the fabric is threaded. The roll of thermal fabric 12 is installed on the first unwinding roller 43, and its starting end is pulled out so that it is laid flat on the surface of the transmission belt 93. At the same time, the roll of denim fabric 11 is installed on the second unwinding roller 45, and its starting end is pulled out so that it passes under the guide roller 3.

[0065] When the equipment is started, the second motor 91 drives the transmission roller 92 to rotate, which in turn drives the transmission belt 93 to start moving. At the same time, the negative pressure pump 71 starts working, which generates negative pressure inside the first air guide box 74 through the negative pressure suction pipe 72 and the first cover plate 73. Since the transmission belt 93 has ventilation holes 94 evenly distributed on it, the thermal insulation fabric 12 located above the first air guide box 74 is firmly adsorbed onto the surface of the transmission belt 93, preventing wrinkling or slippage caused by the transmission of traction force.

[0066] When the thermal insulation fabric 12 is conveyed to the bottom of the glue application mechanism 6, the glue application begins. Before this, the operator presets the glue application width according to the fabric width through the adjustment component 62. The third electric push rod 628 drives the moving plate 627, which in turn drives the adjusting rod 624 and the piston plate 622 to slide inside the glue application box 611, thereby changing the number of effective glue application holes 612. After that, the control valve 625 is opened, and the external glue enters the inner cavity of the glue application box 611 through the glue inlet pipe 626 and the glue inlet hole 623. The glue cut plate 615, which is linked with the moving plate 627, also slides intermittently at the bottom of the glue application box 611. The glue flows out from the glue application hole 612. The glue cut plate 615 is horizontally slidably installed at the bottom of the glue application box 611 and located on both sides of the glue application hole 612, intermittently cutting off the glue, so that the glue drips intermittently from the glue application hole 612 onto the surface of the moving thermal insulation fabric 12.

[0067] The thermal insulation fabric 12, coated with dotted adhesive, continues forward into the working area of ​​the roller pressing mechanism 5. Simultaneously, denim fabric 11, guided by guide roller 3, covers the adhesive-coated thermal insulation fabric 12 from above. At this time, the drive lifting assembly 56 begins to operate. The third motor 564 drives the worm gear 565 to rotate, causing the worm wheel 562 and drive column 561 to rotate. Because the drive column 561 is threadedly engaged with the drive hole 532 on the second lifting plate 531, and the second lifting plate 531 is restricted from rotation by the third guide rod 533, the drive column 561... The rotational motion is converted into the vertical lifting motion of the second lifting plate 531; the second lifting plate 531 drives the mounting ring 534 through the third guide rod 533, and then drives the entire pressure roller assembly 55 to descend through the rotating column 546 until the pressing post 552 on the surface of the mounting cylinder 551 is precisely pressed on the double-layer fabric, and the position of the pressing post 552 corresponds exactly to the position of the glue application point below; during this process, the self-locking characteristics of the worm gear 562 and worm 565 ensure that the pressure roller assembly 55 can be stably maintained after reaching the predetermined position and will not retract due to the reaction force.

[0068] Subsequently, the drive rotation assembly 54 is activated, and the fourth motor 541 drives the drive gear 542 to rotate, which in turn drives the driven gear 548 and the rotating column 546 to rotate. The rotating column 546 transmits the rotational torque to the pressure roller 554 through the engagement of the insertion pin 549 and the insertion slot 5410. The rotation of the pressure roller 554 drives the mounting cylinder 551 on its surface to rotate synchronously, so that the pressing pin 552 rolls on the fabric surface. During the rolling process, the support roller 522 and the elastic sleeve 521 on its surface provide solid bottom support for the fabric. The slight elastic deformation of the elastic sleeve 521 buffers the pressure of the pressing pin 552, avoiding hard impact, so that the adhesive at the bonding point can fully impregnate the fibers under appropriate pressure to form a strong bond.

[0069] The fabric that has completed the roller pressing continues to move backward under the drive of the transmission belt 93 and enters the working area of ​​the blower mechanism 8. The blower 81 starts, and the airflow generated enters the second air guide box 84 through the air guide pipe 82, and finally blows upward from the air blowing hole 85, directly acting on the fabric that has just been bonded, rapidly cooling it, helping the adhesive to cure, and reducing the temperature of the finished fabric.

[0070] Finally, the finished fabric is wound up by the take-up roller 47 at the end of the transmission belt 93. The first motor 48 provides continuous rotational power to the take-up roller 47, neatly winding the finished fabric into a cylinder, thus completing the entire production process.

[0071] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0072] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A point-like adhesive warm-keeping crocheted jean fabric rolling device, comprising a frame (1) and a warm-keeping fabric (12) and a jean fabric (11) passing through the top end of the frame (1), characterized in that: A support mechanism (4) is installed at the top of the frame (1). A transmission mechanism (9) passes through the inside of the support mechanism (4). A negative pressure suction mechanism (7) is installed at the front end of the transmission mechanism (9). A blower mechanism (8) is installed at the rear end of the transmission mechanism (9). A roller pressing mechanism (5) is installed in the middle of the support mechanism (4). A glue applicator (6) is installed at the front end of the roller pressing mechanism (5). A limit mechanism (10) is installed on the inside of the support mechanism (4). The support mechanism (4) includes a first side plate (41) fixed to both sides of the top of the frame (1). The transmission mechanism (9) includes a transmission belt (93) rotatably mounted between the two first side plates (41). The adhesive application mechanism (6) includes adhesive application components (61) spaced above the transmission belt (93). The roller pressing mechanism (5) includes a support roller assembly (52) slidably mounted between the two drive belts (93), and a pressure roller assembly (55) is provided at the top of the support roller assembly (52).

2. A point bonding warm keeping stretch denim fabric rolling device according to claim 1, characterized in that: The frame (1) has support legs (14) fixed at the four corners of its bottom end, and a controller (2) is fixedly installed on one side of its top end. A second side plate (42) is fixed to the front end of the first side plate (41), and a first unwinding roller (43) is installed between the two second side plates (42). A third side plate (44) is fixed to the front end of the first side plate (41), and a second unwinding roller (45) is installed between the two third side plates (44). A fourth side plate (46) is fixed to the rear end of the first side plate (41), and a take-up roller (47) is installed between the two fourth side plates (46). A first motor (48) is installed at one end of the take-up roller (47).

3. A point bonding warm keeping stretch denim fabric rolling device according to claim 1, characterized in that: A transmission roller (92) is rotatably mounted between the two first side plates (41), and a second motor (91) is mounted at one end of one of the transmission rollers (92). Ventilation holes (94) are evenly opened on the surface of the transmission belt (93). The limiting mechanism (10) includes a limiting plate (101), a first electric push rod (102) is installed on the outer side of the limiting plate (101), a first guide hole (104) is opened on the outer side of the first side plate (41), and a first guide rod (103) is fixed at both ends of the outer side of the limiting plate (101).

4. A point bonding warm keeping stretch denim fabric rolling device according to claim 1, characterized in that: The negative pressure suction mechanism (7) includes a first air guide box (74), the top of the first air guide box (74) has a negative pressure suction hole (75), a first cover plate (73) is connected to one side of the first air guide box (74), a negative pressure suction tube (72) is connected to the middle of the side of the first cover plate (73), and a negative pressure pump (71) is installed at the outer end of the negative pressure suction tube (72). The blower mechanism (8) includes a second air guide box (84), the top of the second air guide box (84) has an air blowing hole (85), a second cover plate (83) is tightly connected to one side of the second air guide box (84), an air guide pipe (82) is connected to the middle of the side of the second cover plate (83), and a blower (81) is installed at the outer end of the air guide pipe (82). The first side plate (41) has a first mounting groove (76) at the front end of its side and a second mounting groove (86) at the rear end of its side.

5. The point adhesive warm hook and loop jean fabric rolling device according to claim 1, characterized in that: The glue application mechanism (6) further includes a first lifting component (63), and adjustment components (62) are installed at both ends of the glue application component (61). The first lifting assembly (63) includes a first support plate (633), a second electric push rod (634) is installed on the outer end of the first support plate (633), a first lifting plate (631) is fixed at the bottom output end of the second electric push rod (634), a second guide rod (632) is fixed at both ends of the bottom end of the first lifting plate (631), a first adjustment groove (635) is opened on the side of the first side plate (41), and a second guide hole (636) is opened in the middle of the top of the first adjustment groove (635). The glue application assembly (61) includes a glue application box (611), and the bottom end of the glue application box (611) is uniformly provided with glue application holes (612). The glue-applying box (611) is equipped with telescopic plates (616) on both sides, and a glue-breaking plate (615) is fixed at the bottom of the telescopic plate (616).

6. A point bonding warm-keeping stretch denim fabric rolling device according to claim 5, characterized in that: The adjustment assembly (62) includes an adjustment rod (624), a piston plate (622) is fixed to the inner end of the adjustment rod (624), a first tight plug (621) is bonded to the inner side of the piston plate (622), a movable plate (627) is fixed to the outer end of the adjustment rod (624), and a third electric push rod (628) is installed on the inner top of the movable plate (627). The two ends of the glue box (611) are tightly fitted with side covers (614), and the inside of the side covers (614) is glued with a second tight plug (613). An adjustment rod (624) has an inlet hole (623) inside, an inlet tube (626) is fixed to the outer end of the inlet hole (623), and a control valve (625) is installed on the surface of the inlet tube (626). The top two ends of the glue-applying box (611) are fixed with fifth side plates (13), and guide rollers (3) are installed between the two fifth side plates (13).

7. A point bonding warm keeping stretch denim fabric rolling device according to claim 1, characterized in that: The roller pressing mechanism (5) further includes a support frame (51), and a second lifting assembly (53) is installed at the top ends of both ends of the roller assembly (55). A driving lifting assembly (56) is provided between the top end of the second lifting assembly (53) and the top end of the support frame (51), and a driving rotation assembly (54) is provided between the bottom ends of both ends of the second lifting assembly (53) and the two ends of the roller assembly (55). The support roller assembly (52) includes a second support plate (527), a groove (526) is formed in the middle of the second support plate (527), a support roller (522) is rotatably mounted inside the groove (526), ​​an elastic sleeve (521) is bonded to the surface of the support roller (522), a support rod (523) slides through the middle of the support roller (522), a first mounting hole (525) is formed at both ends of the groove (526), ​​both ends of the support rod (523) slide through the first mounting hole (525), and a nut (524) is threaded to its outer end; The pressure roller assembly (55) includes a pressure roller (554), the surface of which is uniformly provided with snap-fit ​​grooves (555), and a mounting cylinder (551) is sleeved on the pressure roller (554). A snap-fit ​​strip (553) is uniformly fixed on the inner surface of the mounting cylinder (551), and the snap-fit ​​strip (553) is slidably inserted into the snap-fit ​​groove (555). A pressing post (552) is uniformly fixed on the outer surface of the mounting cylinder (551).

8. The roller pressing device for dot-bonded thermal crochet denim fabric according to claim 7, characterized in that: The drive rotation assembly (54) includes a plug groove (5410), in which a plug post (549) is slidably inserted, and a rotating post (546) is fixed to the outer end of the plug post (549). A third support plate (544) is installed on the outer end surface of the rotating column (546), and a rotating hole (543) is opened on the side of the third support plate (544). A first limiting ring (547) is fixed on the surface of the rotating column (546). The outer end of the rotating column (546) is fixed with a driven gear (548), the top end of the driven gear (548) is meshed with a driving gear (542), and the top end of the third support plate (544) is fixedly installed with a fourth motor (541).

9. The roller pressing device for dot-bonded thermal crochet denim fabric according to claim 8, characterized in that: The second lifting assembly (53) includes a second adjusting groove (536), and an mounting ring (534) is slidably sleeved on the surface of the rotating column (546). A tension spring (545) is connected between the outer side of the mounting ring (534) and the inner side of the third support plate (544). The support frame (51) has a third guide hole (535) at both ends of its top end. A third guide rod (533) slides through the inside of the third guide hole (535). A second lifting plate (531) is fixed between the top ends of the two third guide rods (533). The drive lifting assembly (56) includes a drive hole (532), through which a drive column (561) rotates. A second mounting hole (567) is opened in the middle of the top of the support frame (51), and a second limiting ring (563) is fixed on the surface of the drive column (561). A worm gear (562) is fixed on the surface of the drive column (561), and a worm (565) is meshed on one side of the worm gear (562). A sixth side plate (566) is fixed on both sides of the top of the support frame (51), and a third motor (564) is installed at one end of the worm (565).

10. A method for producing a dot-bonded, warm crochet denim fabric, characterized in that: The roller pressing device for dot-bonded thermal crochet denim fabric according to any one of claims 1-9, specifically includes the following steps: S1. Unwinding: The rolled thermal fabric (12) is fitted onto the surface of the first unwinding roller (43), and the rolled denim fabric (11) is fitted onto the surface of the second unwinding roller (45). S2, Limiting: Activate the first electric push rod (102) to push the limiting plate (101) to move to the positions on both sides of the fabric, thereby limiting the fabric on both sides; S3, suction: Start the negative pressure pump (71) and use the negative pressure suction hole (75) at the top of the first air guide box (74) to suction the thermal fabric (12) onto the surface of the transmission belt (93); S4. Adjust the glue application position: Start the third electric push rod (628), and drive the piston plate (622) and glue-breaking plate (615) to move through the adjusting rod (624), and adjust the number of openings of the glue application hole (612) at the bottom of the glue application box (611) to control the glue application width; start the second electric push rod (634) to adjust the distance between the glue application box (611) and the thermal insulation fabric (12); S5. Applying adhesive: Open the control valve (625), and the adhesive enters the adhesive box (611) from the adhesive inlet pipe (626) and flows out from the adhesive hole (612) to be applied to the surface of the thermal insulation fabric (12). S6. Adjust the roller pressure position: The coated thermal insulation fabric (12) moves above the support roller assembly (52), and the denim fabric (11) covers the top of the thermal insulation fabric (12). Start the third motor (564), and the second lifting plate (531) drives the pressure roller assembly (55) to descend, so that the pressing column (552) presses against the coating point. S7, Rolling: Start the fourth motor (541), drive the pressure roller (554) to rotate through the drive gear (542) and driven gear (548) to continuously roll and bond the two layers of fabric; S8, Heat dissipation by blowing air: The bonded fabric is moved above the blower mechanism (8), the blower (81) is started, and the bonded area is cooled through the air hole (85) at the top of the second air guide box (84); S9. Winding: Start the first motor (48) to drive the winding roller (47) to wind up the finished fabric.

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