Automobile slide rail rubber strip gluing device and production system

Abstract

The present application relates to a kind of automobile slide rail rubber strip gluing device and production system, wherein the gluing device includes workbench and glue injection head, workbench is fixed with mounting seat and side frame, two limiting guide rollers A are rotatably installed on the side of mounting seat;Expanding module is provided above mounting seat, expanding module includes cylinder, suspension, plate frame and push roller;Cylinder is vertically fixed on side frame, suspension is fixed on the telescopic end of cylinder;Two plate frames are symmetrically installed below suspension by linkage mechanism, glue injection head is arranged at the side of suspension and between two plate frames.Gluing device expands the recessed area of corresponding part on rubber strip body to expanding injection area before glue injection, and the liquid level of glue material is arched upward by elastic reset of protruding part after glue injection, which is combined with the pressing and shaping of pressing roller and U-shaped fixture, so that the solidified filling glue formed by glue material dry solidification forms surface contact bonding with the bottom surface of non-woven fabric strip.Compared with traditional process, the bonding area is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of automotive slide rail rubber strip manufacturing technology, specifically to an automotive slide rail rubber strip bonding device and production system. Background Technology

[0002] Automotive sliding rail rubber strips are elastic sealing components installed at the connection between seat rails and vehicle floor, or in the gaps of sliding mechanism tracks such as sunroofs or sliding doors. By precisely fitting the contour of the track, they provide multiple protective and auxiliary functions.

[0003] As per the appendix to this application specification Figure 13 As shown, this is an existing automotive sliding rail rubber strip, which mainly consists of two parts: a rubber strip body 01 and a non-woven fabric strip 02. Protrusions 011 are formed on both sides of the top of the rubber strip body 01, and a recessed area 012 is formed between the two protrusions 011. The non-woven fabric strip 02 is fixed to the top of the rubber strip body 01 by adhesive.

[0004] In traditional processes, the gluing area of ​​the equipment is mainly distributed on the top surface of the protrusion 011 and the surface of the recessed area 012. During bonding, due to the deformation of the recessed area 012, the non-woven strip 02 is only bonded and fixed to the top surface of the protrusion 011. The adhesive contact area is small, the bonding strength is low, and defects such as detachment are prone to occur.

[0005] On the other hand, after the adhesive dries, there is a large gap between the non-woven strip 02 and the recessed area 012. The part of the non-woven strip 02 above the recessed area 012 lacks filling support, and will deform severely under pressure during long-term use, which will reduce the product's durability and sealing effect. Summary of the Invention

[0006] Based on the above-mentioned technical problems, the present invention provides an adhesive bonding device and production system for automotive slide rail strips, which expands the recessed area into a flared glue injection area and injects glue to increase the bonding area between the strip body and the non-woven fabric strip. After the glue dries, it forms a solidified filling colloid, which provides effective support for the non-woven fabric strip.

[0007] On the one hand, the embodiments of this application provide an automotive slide rail adhesive strip bonding device, including a worktable and an injection head. A mounting base and a side frame are fixed on the worktable, and two limiting guide rollers A are rotatably mounted on the side of the mounting base. The mounting base is equipped with a flaring module, which includes a cylinder, suspension, plate frame and push roller; The cylinder is vertically fixed to the side frame, and the suspension is fixed to the telescopic end of the cylinder; Two leaf springs are symmetrically mounted under the suspension via a linkage mechanism, and the glue injection head is located on the side of the suspension and between the two leaf springs; The linkage mechanism is used to drive the two leaf springs closer together when the suspension is moving upward and to drive the two leaf springs further apart when the suspension is moving downward. Each plate frame has a push roller hinged at the bottom corresponding to the position of the two limiting guide rollers A; When the suspension descends to its limit, the two pushing rollers above the same limit guide roller A are arranged in an inverted figure-eight shape, pushing the protrusions on both sides in the opposite direction, thus expanding the recessed area into a widened glue injection area.

[0008] In one implementation, the bonding apparatus further includes a pressing module and a feeding mechanism; The pressing module and the feeding mechanism are located above the workbench and downstream of the flaring module, and the feeding mechanism and the pressing module are distributed vertically. The feeding mechanism is used to supply and deliver nonwoven fabric strips to the pressing module; The pressing module is used to press the adhesive strip body and the non-woven fabric strip into a whole.

[0009] In one implementation, two assembly seats are fixed below each plate frame, and an assembly shaft extending along the conveying direction of the rubber strip body is horizontally fixed on the side of each assembly seat. A sleeve is rotatably mounted on the assembly shaft. The sleeve has a stepped hole, and the inner wall of the small-diameter hole of the stepped hole is rotatably connected to the outer wall of the assembly shaft. A planar spiral spring is fitted on the outside of the assembly shaft. One end of the planar spiral spring is fixed to the wall of the large-diameter hole of the stepped hole, and the other end is fixed to the outer wall of the assembly shaft. An installation shaft is fixed on the outer wall of the sleeve, and the push rollers are rotated and mounted on the installation shaft one by one.

[0010] In one implementation, a blocking element is fixed on the outer wall of the sleeve at a position opposite to the mounting shaft. A stop bar is fixed to the side of the mounting base, and the stop bar and the blocking component cooperate to limit the maximum rotation angle of the sleeve component.

[0011] In one implementation, the linkage mechanism includes a bidirectional threaded rod, a gear, and a nut seat; The double-threaded rod is rotatably mounted under the suspension via a bearing housing, and a gear is fixedly fitted onto one end of the double-threaded rod; A vertical rod is fixed on the workbench, and a rack that meshes with the gear is fixed at the top of the rod. When the suspension travels to its limit position, the gear and rack are separated. Two nut seats are symmetrically and slidingly installed under the suspension, and the two nut seats are threadedly matched and fitted on both sides of the bidirectional threaded rod; The two plate frames are fixed to the bottom of the corresponding nut seats.

[0012] In one implementation, the feeding mechanism includes an unwinding frame, a tension adjustment module, and a limiting guide roller B; The unwinding frame is fixed to the top surface of the workbench and is used to install and release rolls of nonwoven fabric strips. A guide roller frame is fixed on the top surface of the workbench, and a tension adjustment module is located on the side of the guide roller frame to adjust the tension of the nonwoven fabric strip feeding. The limiting guide roller B is rotatably mounted on the side of the guide roller frame and is used to reverse the direction of the nonwoven fabric strip.

[0013] In one implementation, the pressing module includes a pressure roller and a U-shaped fixture; The U-shaped fixture is fixed on the worktable and extends along the conveying direction of the rubber strip body. The cross-section of the U-shaped fixture is U-shaped and adapted to the cross-section of the rubber strip body. The pressure roller is rotatably mounted on the side of the guide roller frame and located above the U-shaped fixture; A pressing zone is formed between the pressure roller and the U-shaped fixture.

[0014] In one implementation, a side seat is fixed to the side of the suspension, and an injection head is installed through the side seat; The dispensing head is connected to a glue supply pipe, which is connected to a material pump in the glue storage container. When the suspension descends to its limit position, the height of the dispensing port of the glue head is higher than the top of the protrusion.

[0015] The method for bonding the adhesive strip body and the non-woven fabric strip using an adhesive bonding device is as follows: The two protrusions are pushed in opposite directions by the flaring module to form an inverted figure-eight shape, which expands the concave area to form a flared glue injection area. The glue is injected into the flared glue injection area by the glue injection head, ensuring that the glue liquid level does not exceed the top surface of the protrusion. After the flared part on the rubber strip body moves to the downstream side of the flared module, the flared glue injection area is reset to a recessed area due to the elastic reset of the protrusions on both sides. The space shrinks and squeezes the glue. After being pressed, the glue migrates upward, and the liquid surface is arched with the middle high and the sides low, and extends to the outside of the recessed area. The non-woven fabric strip is pressed onto the top of the adhesive strip body using a pressing module. The non-woven fabric strip squeezes the protruding adhesive material, causing the adhesive material to migrate to both sides and cover the area between the non-woven fabric strip and the top surface of the protrusion. After the adhesive material dries, it forms a solidified filling colloid in the recessed area, and the top of the solidified filling colloid is in surface contact with the bottom of the nonwoven strip for fixation.

[0016] On the other hand, this application also provides an automotive slide rail rubber strip production system, which includes the above-mentioned bonding device.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows.

[0018] Before glue injection, the flaring module expands the corresponding recessed area on the glue strip body into a flared glue injection area. After glue injection, the elastic reset of the protrusion makes the glue liquid surface arch upward. Combined with the pressing and shaping by the pressure roller and U-shaped fixture, the solidified filling glue formed by the glue drying forms a surface contact bond with the bottom surface of the non-woven fabric strip, which effectively increases the bonding area compared with the traditional process.

[0019] The solidified filler colloid formed after the adhesive material dries provides continuous and uniform rigid support for the nonwoven strip, eliminating the cavity gap between the nonwoven strip and the recessed area. This avoids the problem of the nonwoven strip collapsing and deforming under pressure during long-term use, thus improving the durability and service life of the product.

[0020] The adhesive migrates to both sides under pressure, completely covering the seam area between the bottom surface of the non-woven strip and the top surface of the protrusion. After drying, it forms a complete sealing adhesive layer, preventing leakage channels at the seam and comprehensively improving the waterproof, dustproof, soundproof and sealing performance of the product to meet the complex operating conditions of high load and long cycle of automotive slide rails.

[0021] The suspension lifting is driven by a cylinder, and in conjunction with a purely mechanical linkage mechanism, the vertical movement of the suspension and the horizontal movement of the two plates are synchronized mechanically. No additional independent drive components are required, which simplifies the device structure, reduces the difficulty of control and the failure rate of the equipment, and at the same time ensures the synchronization and accuracy of the flaring and lifting actions. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the gluing device in this invention; Figure 2 A schematic diagram of the feeding mechanism and pressing module; Figure 3 This is a schematic diagram of a partial structure above the workbench; Figure 4 A schematic diagram of a structure in which a recessed area is expanded into a flared injection area; Figure 5 for Figure 4 Enlarged schematic diagram of the structure at point A in the middle; Figure 6 This is a schematic diagram of a partial structure below the suspension in this invention; Figure 7 This is a schematic diagram of the installation of the pusher roller structure in this invention; Figure 8 This is a schematic diagram of the structure of the pusher roller during resetting in this invention; Figure 9 A schematic diagram of the structure for injecting adhesive into the flared adhesive injection area; Figure 10 This is a schematic diagram showing the distribution of adhesive material during resetting within the flared adhesive injection area; Figure 11A schematic diagram of the structure of the adhesive material drying to form a solidified filler colloid; Figure 12 A schematic diagram of an automotive slide rail rubber strip production system; Figure 13 This is a schematic diagram of the adhesive strip body and the non-woven fabric strip being glued and fixed in the prior art.

[0023] In the diagram: 01. Adhesive strip body; 011. Protrusion; 012. Recessed area; 013. Flared injection area; 02. Non-woven fabric strip; 03. Solidified filler colloid; 04. Adhesive compound; 05. Melt extruder; 06. Water cooling tank; 07. Traction machine; 08. Slitting machine; 1. Workbench; 11. Mounting base; 111. Limiting guide roller A; 12. Side frame; 13. Vertical rod; 14. Unwinding frame; 15. Guide roller frame; 2. Cylinder; 21. Suspension; 22. Plate frame; 23. Mounting... 3. Mounting seat; 31. Push roller; 32. Sleeve; 33. Stepped hole; 34. Assembly shaft; 35. Flat spiral spring; 36. Mounting shaft; 47. Blocking component; 48. Stop bar; 59. Injection head; 40. Injection pipe; 41. Side seat; 50. Bidirectional threaded rod; 501. Bearing seat; 502. Gear; 503. Rack; 51. Nut seat; 52. Limiting guide rail; 6. Tension adjustment module; 7. Limiting guide roller B; 80. Pressure roller; 81. U-shaped fixture; 82. Pressing area. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the embodiments: This invention is not limited to the specific embodiments listed below. Those skilled in the art can implement this invention using various other specific embodiments based on the content disclosed herein. Any modifications or alterations made to the design structure and concept of this invention fall within the protection scope of this invention. It should be noted that, unless otherwise specified, the embodiments and features described in this invention can be combined with each other.

[0025] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0026] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] Please see Figure 12 This application provides a production system for automotive sliding rail rubber strips. The production system includes a melt extruder 05, a water cooling tank 06, a bonding device, a traction machine 07, and a slitting machine 08, which are connected sequentially from upstream to downstream of the process. The traction machine 07 provides traction power for the entire process. The melt extruder 05 is equipped with an extrusion die. After the raw material is extruded and formed, it enters the water cooling tank 06 for water cooling and shaping to obtain the rubber strip body 01. The bonding device then uses adhesive to fix the rubber strip body 01 and the non-woven fabric strip 02. Finally, the slitting machine 08 is used to slit the product to obtain the final product.

[0028] Please see Figures 1-8 The gluing device specifically includes a workbench 1, a glue injection head 4, a flaring module, a feeding mechanism, and a pressing module.

[0029] The workbench 1 serves as the mounting base for the entire bonding device. The top surface of the workbench 1 is sequentially and fixedly equipped with a mounting base 11, a side frame 12, and a guide roller frame 15 along the conveying direction of the adhesive strip body 01. Two limiting guide rollers A111 are symmetrically and rotatably mounted on the side of the mounting base 11. The axes of the limiting guide rollers A111 are perpendicular to the conveying direction of the adhesive strip body 01, and the two limiting guide rollers A111 are arranged along the conveying direction of the adhesive strip body 01. The two limiting guide rollers A111 support the adhesive strip body 01 and simultaneously limit its movement, ensuring the straightness of the adhesive strip body 01 during continuous conveying and preventing deviation.

[0030] The flaring module is located above the limiting guide roller A111 and is used to push the two protrusions 011 on both sides of the rubber strip body 01 to move in the opposite direction, thereby flaring the strip and expanding the recessed area 012 to form the flared glue injection area 013. Figure 3 and Figure 4 As shown, the flaring module includes a cylinder 2, a suspension 21, two plate frames 22, four push rollers 3, and a linkage mechanism.

[0031] Cylinder 2 is fixed on the top crossbeam of side frame 12. The telescopic end of cylinder 2 is vertically downward. Suspension 21 is horizontally fixed on the telescopic end of cylinder 2 and is perpendicular to the conveying direction of rubber strip body 01. The telescopic operation of cylinder 2 can drive suspension 21 to perform lifting and lowering movements.

[0032] Two plate frames 22 are symmetrically installed on both sides below the suspension 21 through a linkage mechanism, and both plate frames 22 extend horizontally along the conveying direction of the rubber strip body 01. The linkage mechanism is used to drive the two plate frames 22 to move closer to each other when the suspension 21 moves upward and to drive the two plate frames 22 to move away from each other when the suspension 21 moves downward.

[0033] In some examples, the linkage mechanism may include a bidirectional threaded rod 5, a gear 502, and two nut seats 51, such as Figure 4 and Figure 6 As shown, two bearing seats 501 are fixed on the bottom surface of the suspension 21. The bidirectional threaded rod 5 is rotatably mounted below the suspension 21 through the two bearing seats 501. The axis of the bidirectional threaded rod 5 is perpendicular to the conveying direction of the rubber strip body 01. The gear 502 is fixedly mounted on one end of the bidirectional threaded rod 5.

[0034] A T-shaped limiting guide rail 52 is fixed below the suspension 21. Two nut seats 51 are symmetrically and slidably mounted on the limiting guide rail 52. The limiting guide rail 52 guides and limits the nut seats 51, ensuring that the nut seats 51 can only move in the length direction of the limiting guide rail 52. The two nut seats 51 are respectively matched and fitted on the reverse threaded sections on both sides of the bidirectional threaded rod 5. Two plate frames 22 are fixedly installed at the bottom of the two nut seats 51 in a corresponding manner.

[0035] A vertical rod 13 is vertically fixed on the top surface of the workbench 1, and a rack 503 is vertically fixed on the top of the vertical rod 13. The tooth surface of the rack 503 meshes with the gear 502, and when the suspension 21 moves to the limit position, the gear 502 and the rack 503 are completely separated.

[0036] Through the above-mentioned linkage mechanism, the vertical lifting motion and the horizontal motion of the two plate frames 22 are achieved through pure mechanical synchronous linkage. No additional independent drive components are required, which simplifies the device structure, reduces the control difficulty and equipment failure rate, and ensures the synchronization and accuracy of the flaring action and the lifting action.

[0037] In addition, the threaded engagement between the bidirectional threaded rod 5 and the nut seat 51 achieves a locking effect, ensuring that the bidirectional threaded rod 5 and the gear 502 will not rotate arbitrarily after the gear 502 and the rack 503 are separated. On the one hand, it maintains the initial position of each pushing roller 3, and on the other hand, it ensures that the gear 502 can smoothly mesh with the rack 503 during the next flaring action.

[0038] like Figure 5 and Figure 7 As shown, the specific installation method of the pusher roller 3 is as follows: Two mounting bases 23 are fixedly installed on the bottom surface of each plate frame 22. Each mounting base 23 has a horizontally fixed mounting shaft 32 on its side. The axis of the mounting shaft 32 is parallel to the conveying direction of the rubber strip body 01. Each mounting shaft 32 is rotatably fitted with a sleeve 31.

[0039] The sleeve 31 has a stepped hole 311 inside, and the small diameter hole wall of the stepped hole 311 is rotatably engaged with the outer wall of the assembly shaft 32. A planar spiral spring 33 is sleeved on the outside of the assembly shaft 32. One end of the planar spiral spring 33 is fixed to the inner wall of the large diameter hole of the stepped hole 311, and the other end is fixed to the outer wall of the assembly shaft 32. The planar spiral spring 33 is used for the rotation and reset of the sleeve 31. An installation shaft 34 is fixed on the outer wall of the sleeve 31, and the push rollers 3 are rotatably mounted on the installation shaft 34. Through the above-mentioned elastic hinge structure, the push rollers 3 have adaptive buffering and reset capabilities during the flaring operation.

[0040] In addition, a blocking member 35 is fixed on the outer wall of the sleeve 31 at a position opposite to the mounting shaft 34, and a stop bar 36 is fixed on the side of the mounting base 23. The stop bar 36 and the blocking member 35 cooperate to block and limit the maximum rotation angle of the sleeve 31, thereby limiting the maximum flaring of the push roller 3 to the recessed area 012, avoiding excessive flaring that could cause the rubber strip body 01 to fail to reset, while ensuring the consistency of the flaring range of different batches of products and improving process stability.

[0041] When the suspension 21 descends to its limit position, the two pushing rollers 3 above the same limiting guide roller A111 are arranged in an inverted figure-eight shape. The outer walls of the two pushing rollers 3 respectively abut against the inner walls of the corresponding protrusions 011, pushing the protrusions 011 on both sides in the opposite direction. The cross sections of the protrusions 011 on both sides are in an inverted figure-eight shape in the area formed by the pushing of the four pushing rollers 3, so that the recessed area 012 expands to form the flared glue injection area 013.

[0042] like Figure 4 As shown, the glue injection head 4 is located on the side of the suspension 21 and at the center between the two plate frames 22. Specifically, a side seat 42 is fixed on the side of the suspension 21, and the glue injection head 4 is vertically fixed on the side seat 42. The feed end of the glue injection head 4 is connected to a glue supply pipe 41, which is connected to a feed pump in the glue storage container to continuously and stably supply glue 04 to the glue injection head 4. The glue supply pipe 41 is a flexible hose to accommodate position changes during lifting and adjustment.

[0043] When the suspension 21 descends to its limit position, the discharge port of the glue injection head 4 is located directly above the flared glue injection area 013, and the height of the discharge port is higher than the top of the protrusion 011, ensuring that the glue 04 can be accurately injected into the flared glue injection area 013 during the glue injection process, while avoiding contact between the discharge port and the surface of the glue 04 to prevent contamination.

[0044] Both the feeding mechanism and the pressing module are located above the workbench 1 and downstream of the flaring module's conveying section, with the feeding mechanism and pressing module distributed vertically. The feeding mechanism is used to continuously and stably supply and convey the non-woven fabric strip 02 to the pressing module, and the pressing module is used to continuously press and bond the non-woven fabric strip 02 to the glued strip body 01 after glue injection into a whole. The feeding mechanism and pressing module will be described in detail below: like Figure 2 As shown, the feeding mechanism includes an unwinding frame 14, a tension adjustment module 6, and a limiting guide roller B7. The unwinding frame 14 is fixed on the top surface of the workbench 1 and is used to install and release the roll of nonwoven fabric strip 02. The tension adjustment module 6 is installed on the side of the guide roller frame 15 and is used to adjust the tension of the nonwoven fabric strip 02 during the conveying process to prevent the nonwoven fabric strip 02 from becoming loose, wrinkled, or broken. The tension adjustment module 6 adopts existing technology, and its specific structure and working principle will not be described in detail.

[0045] The limiting guide roller B7 is rotatably installed on the side of the guide roller frame 15 to reverse the direction of the non-woven fabric strip 02, so that the non-woven fabric strip 02 enters the pressing module at a suitable angle to ensure the pressing and bonding accuracy, and at the same time to limit the non-woven fabric strip 02 to prevent deviation.

[0046] The pressing module includes a pressure roller 8 and a U-shaped fixture 81. The U-shaped fixture 81 is fixedly installed on the top surface of the worktable 1. The U-shaped fixture 81 extends along the conveying direction of the rubber strip body 01, and the cross section of the U-shaped fixture 81 is a U-shaped structure that matches the outer contour of the rubber strip body 01. It can stably support and limit the rubber strip body 01, and prevent the rubber strip body 01 from shifting during the pressing process.

[0047] The pressure roller 8 is rotatably mounted on the side of the guide roller frame 15 and located directly above the U-shaped fixture 81. A pressing area 82 is formed between the pressure roller 8 and the U-shaped fixture 81. The size of the pressing area 82 is adapted to the overall thickness of the adhesive strip body 01 and the non-woven fabric strip 02 to ensure that the pressing force is uniform and controllable.

[0048] The initial state of the gluing device is as follows Figure 8 As shown, when the suspension 21 is at its upper limit position, the push roller 3 is not compressed. Under the traction of the planar spiral spring 33, the sleeve 31 remains in the reset state. The two push rollers 3 corresponding to the positions on the two plates 22 form a spreading structure. At this time, the blocking member 35 is away from the stop bar 36, and the axis of the push roller 3 is vertically downward. At the same time, the gear 502 and the rack 503 separate, and the two plates 22 move closer to each other, so that the lateral span of the spreading structure is smaller than the opening size at the top of the recessed area 012. This ensures that the spreading structure can smoothly enter the recessed area 012 when the suspension 21 descends, and avoids the spreading structure from interfering with the protrusion 011 during descent and being unable to penetrate into the recessed area 012.

[0049] The gluing device provided in this application embodiment can perform gluing processing on automotive slide rail rubber strips according to the following steps during actual operation: The adhesive strip body 01 is guided to the two limiting guide rollers A111 for support and limitation. Then, the adhesive strip body 01 is guided into the U-shaped fixture 81 and passes through the pressing area 82. The non-woven fabric strip 02 is released by the unwinding frame 14. After the tension is adjusted by the tension adjustment module 6 and the limiting guide roller B7 is reversed, it passes through the pressing area 82 with constant tension. The non-woven fabric strip 02 is located above the adhesive strip body 01, and the two are synchronously pulled by the traction machine 07.

[0050] When cylinder 2 extends, it drives suspension 21 to descend vertically. During the descent, gear 502 and rack 503 come into contact and mesh, driving bidirectional threaded rod 5 to rotate. The rotating bidirectional threaded rod 5 drives the two nut seats 51 to move away from each other, causing the pushing rollers 3 on both sides to move away from each other synchronously. The pushing rollers 3 will come into contact with the inner wall of the protrusion 011 on the same side and be squeezed. The pushing rollers 3 gradually swing and tilt under pressure, and the protrusion 011 gradually tilts and opens outward under pressure.

[0051] When the suspension 21 descends to its limit position, each blocking element 35 contacts and blocks the corresponding stop lever 36, and the state at this time is as follows. Figure 4As shown, the two pushing rollers 3 above the same limiting guide roller A111 are arranged in an inverted figure-eight shape, pushing the protrusions 011 on both sides outward in the opposite direction, so that the original recessed area 012 is expanded to form a flared glue injection area 013 with a larger cross section. During this process, when the pushing roller 3 contacts and squeezes the side wall of the protrusion 011, the suspension 21 does not descend to its limit. As the protrusion 011 swings outward under pressure, the height of its top gradually decreases. When the pushing roller 3 swings under pressure, the height of its bottom gradually increases. The cylinder 2 continues to extend and drive the suspension 21 downward. On the one hand, this allows the gear 502 and rack 503 to continue meshing and increasing the amount of pressure exerted by the pushing roller 3 on the protrusion 011. On the other hand, it allows the pushing roller 3 to continue to extend downward, preventing the pushing roller 3 from slipping off the top of the protrusion 011 due to changes in relative position. This ensures that the pushing roller 3 and the protrusion 011 maintain a stable contact and squeezing fit during the flaring process. Furthermore, the deep-entry action and the flaring amplification action are highly integrated, ensuring the continuity, stability, and precision of the flaring action.

[0052] After the flaring module is in place, as the adhesive strip body 01 continues to be conveyed, the corresponding part on the adhesive strip body 01 continuously expands into the flared glue injection area 013. The feed pump starts, and the glue injection head 4 injects the adhesive 04 into the flared glue injection area 013, ensuring that the liquid level of the adhesive 04 does not exceed the top surface of the protrusion 011. This state is as follows: Figure 9 As shown, this is because the freshly injected glue has high fluidity to prevent glue 04 from overflowing from the top surface of the protrusion 011.

[0053] After the flared portion on the adhesive strip body 01 moves to the downstream side of the flaring module, because the adhesive 04 has been injected into the adhesive strip body 01 and maintained for a certain period of time, the adhesive 04 begins to initially solidify, its viscosity increases, and its cohesive force strengthens. When the flared injection area 013 completely retracts and returns to its original recessed area 012, the internal space of the recessed area 012 shrinks, squeezing the internal adhesive 04. Under pressure, the adhesive 04 migrates upward and does not overflow excessively to both sides. Figure 10 As shown, the surface of the rubber compound 04 forms an arch shape that is high in the middle and low on both sides, and the top of the arch extends beyond the top opening of the recessed area 012 and extends to the top surface between the two protrusions 011.

[0054] When the nonwoven fabric strip 02 and the glued strip body 01 continuously enter the pressing area 82, the pressure roller 8 continuously presses the nonwoven fabric strip 02 onto the top of the glued strip body 01. The bottom surface of the nonwoven fabric strip 02 squeezes the arched and protruding glue material 04, causing the glue material 04 to spread and migrate evenly to both sides, completely covering the seam between the bottom surface of the nonwoven fabric strip 02 and the top surface of the protrusion 011, while filling the entire recessed area 012 without gaps or air bubbles.

[0055] like Figure 11As shown, after the adhesive 04 dries, a solidified filling adhesive 03 is formed in the recessed area 012. The top of the solidified filling adhesive 03 forms a complete surface contact bond with the bottom surface of the nonwoven fabric strip 02, and the sidewalls and bottom surface of the solidified filling adhesive 03 are completely adhered to the inner wall of the recessed area 012.

[0056] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

Claims

1. A bonding device for automotive slide rail adhesive strips, comprising a worktable (1) and an injection head (4), wherein a mounting base (11) and a side frame (12) are fixed on the worktable (1), and two limiting guide rollers A (111) are rotatably mounted on the side of the mounting base (11), characterized in that: The mounting base (11) is provided with a flaring module, which includes a cylinder (2), a suspension (21), a plate frame (22) and a push roller (3). The cylinder (2) is vertically fixed on the side frame (12), and the suspension (21) is fixed on the telescopic end of the cylinder (2); Two plate frames (22) are symmetrically installed below the suspension (21) via a linkage mechanism. The glue injection head (4) is located on the side of the suspension (21) and between the two plate frames (22). The linkage mechanism is used to drive the two plate frames (22) to move closer to each other when the suspension (21) moves upward and to drive the two plate frames (22) to move away from each other when the suspension (21) moves downward; Each plate frame (22) has a push roller (3) hinged at the position corresponding to the two limiting guide rollers A (111) below it. When the suspension (21) descends to its limit, the two pushing rollers (3) above the same limiting guide roller A (111) are arranged in an inverted figure-eight shape, pushing the two protrusions (011) in the opposite direction, so that the recessed area (012) is expanded into the flared glue injection area (013).

2. The bonding apparatus according to claim 1, characterized in that: It also includes a pressing module and a feeding mechanism; The pressing module and the feeding mechanism are located above the workbench (1) and downstream of the flaring module, and the feeding mechanism and the pressing module are distributed vertically. The feeding mechanism is used to supply and convey nonwoven fabric strips (02) to the pressing module; The pressing module is used to press the adhesive strip body (01) and the non-woven fabric strip (02) into a whole.

3. The bonding apparatus according to claim 1, characterized in that: Each of the plate frames (22) has two mounting bases (23) fixed below it, and each of the mounting bases (23) has a horizontally fixed mounting shaft (32) extending along the conveying direction of the rubber strip body (01) on its side. A sleeve (31) is rotatably fitted on the assembly shaft (32). The sleeve (31) has a stepped hole (311) inside, and the inner wall of the small diameter hole of the stepped hole (311) is rotatably connected to the outer wall of the assembly shaft (32). A planar spiral spring (33) is sleeved on the outside of the assembly shaft (32). One end of the planar spiral spring (33) is fixed to the wall of the large diameter hole of the stepped hole (311), and the other end is fixed to the outer wall of the assembly shaft (32). The sleeve (31) has an installation shaft (34) fixed on its outer wall, and the push rollers (3) are rotated and mounted on the installation shaft (34) in a corresponding manner.

4. The bonding apparatus according to claim 3, characterized in that: A blocking member (35) is fixed on the outer wall of the sleeve (31) at a position opposite to that of the mounting shaft (34). The side of the mounting base (23) is fixed with a stop bar (36), and the stop bar (36) and the blocking member (35) are in corresponding blocking cooperation to limit the maximum rotation angle of the sleeve member (31).

5. The bonding apparatus according to claim 1, characterized in that: The linkage mechanism includes a bidirectional threaded rod (5), a gear (502), and a nut seat (51); The bidirectional threaded rod (5) is rotatably mounted below the suspension (21) via a bearing seat (501), and the gear (502) is fixedly fitted onto one end of the bidirectional threaded rod (5); A vertical rod (13) is vertically fixed on the workbench (1), and a rack (503) that meshes with the gear (502) is vertically fixed at the top of the vertical rod (13). When the suspension (21) moves to the limit position, the gear (502) and the rack (503) are in a separated state. The two nut seats (51) are symmetrically and slidably installed below the suspension (21), and the two nut seats (51) are threadedly matched and fitted on both sides of the bidirectional threaded rod (5); The two plate frames (22) are respectively fixed to the bottom of the corresponding nut seat (51).

6. The gluing apparatus according to claim 2, characterized in that: The feeding mechanism includes an unwinding frame (14), a tension adjustment module (6), and a limiting guide roller B (7). The unwinding frame (14) is fixed to the top surface of the workbench (1) and is used to install and release the roll of nonwoven fabric strip (02); The top surface of the workbench (1) is fixed with a guide roller frame (15), and the tension adjustment module (6) is located on the side of the guide roller frame (15) to adjust the tension of the nonwoven strip (02) feeding. The limiting guide roller B (7) is rotatably mounted on the side of the guide roller frame (15) for reversing the traction of the nonwoven strip (02).

7. The gluing apparatus according to claim 6, characterized in that: The pressing module includes a pressure roller (8) and a U-shaped fixture (81); The U-shaped fixture (81) is fixed on the workbench (1) and extends along the conveying direction of the rubber strip body (01), and the cross section of the U-shaped fixture (81) is a U-shape that is adapted to the cross section of the rubber strip body (01). The pressure roller (8) is rotatably mounted on the side of the guide roller frame (15) and located above the U-shaped fixture (81); A pressing zone (82) is formed between the pressure roller (8) and the U-shaped fixture (81).

8. The gluing apparatus according to claim 1, characterized in that: The suspension (21) is fixed with a side seat (42) on its side, and the glue injection head (4) is installed through the side seat (42); The glue injection head (4) is connected to a glue supply pipe (41), which is connected to a material pump in the glue storage container. When the suspension (21) descends to its limit position, the height of the discharge port of the glue injection head (4) is higher than the top of the protrusion (011).

9. The gluing apparatus according to claim 2, characterized in that: The method for bonding the adhesive strip body (01) and the non-woven fabric strip (02) using an adhesive bonding device is as follows: The two protrusions (011) are pushed in opposite directions by the flaring module to form an inverted figure-eight shape, so that the recessed area (012) is expanded to form a flared glue injection area (013). The glue (04) is injected into the flared glue injection area (013) by the glue injection head (4) to ensure that the liquid level of the glue (04) does not exceed the top surface of the protrusion (011). After the flared part on the adhesive strip body (01) moves to the downstream side of the flared module, the flared glue injection area (013) is reset to the recessed area (012) due to the elastic reset of the protrusions (011) on both sides. The space shrinks and squeezes the adhesive material (04). After being pressed, the adhesive material (04) moves upward, and the liquid surface is arched with the middle high and the sides low, and extends to the outside of the recessed area (012). The nonwoven fabric strip (02) is pressed onto the top of the adhesive strip body (01) using the pressing module. The nonwoven fabric strip (02) squeezes the protruding adhesive material (04), causing the adhesive material (04) to migrate to both sides and cover the area between the nonwoven fabric strip (02) and the top surface of the protrusion (011). After the adhesive (04) dries, a solidified filling colloid (03) is formed in the recessed area (012). The top of the solidified filling colloid (03) is in surface contact with the bottom of the nonwoven strip (02) for fixation.

10. A production system for automotive slide rail rubber strips, characterized in that: The gluing device includes any one of claims 1-9.

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