A plastic strip threading mechanism for bundled profiles

Abstract

The application discloses a plastic strip threading mechanism for bundled sections, and belongs to the technical field of section processing.The plastic strip threading mechanism comprises a conveying box, a plurality of H-shaped roller assemblies, a conveying guide rail, a plurality of conveying hoses, a front-end module, a fixed frame and a plurality of staggered lifting positioning baffles.The H-shaped roller assembly adopts a rubber-coated roller and clamps the plastic strip by means of elastic deformation.The plurality of positioning baffles are staggered along the conveying direction, so that the plastic strip is distributed in a stepped manner when the plastic strip extends from the front-end module.The inner wall of the conveying hose is embedded with wear-resistant steel wires, which can maintain the shape of the sliding groove and reduce friction when the hose is bent.The front-end module can select a plug-in seat or a guide box according to the type of the section, and automatically butt joint or manually assist in threading, respectively.The plastic strip threading mechanism can directly thread the bundled sections without unpacking, effectively adapts to the problem that the end faces of the sections are not arranged in an orderly manner, and has the advantages of simple structure, convenient operation and wide application range.

Description

Technical Field

[0001] This invention relates to the field of plastic window profile processing technology, and more specifically, to a plastic strip threading mechanism for bundled profiles. Background Technology

[0002] In the production and processing of building profiles such as PVC and aluminum alloy profiles, it is often necessary to insert plastic strips into the internal cavities of the profiles to achieve functions such as noise reduction, sealing, or reinforcement. Currently, the insertion of plastic strips is typically done using automated strip-inserting equipment for single profiles.

[0003] However, due to the problem that individual profiles in bundled profiles are often not neatly arranged or misaligned, existing strip-threading equipment requires the profiles to be unpacked and fed one by one. It is impossible to directly thread the bundled profiles, resulting in low production efficiency. Furthermore, the unpacked profiles are easily scattered, increasing the need for subsequent processing steps.

[0004] Therefore, there is an urgent need for a strip-threading mechanism that can directly thread strips onto bundled profiles without unpacking and can adapt to the problem of unevenly arranged profiles. Summary of the Invention

[0005] To address the above deficiencies, the present invention provides a plastic strip threading mechanism for bundled profiles, thereby solving the aforementioned problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a plastic strip threading mechanism for bundled profiles, comprising: The conveyor box has a feed inlet on its front side; Multiple sets of H-shaped roller assemblies are arrayed on the front and rear sides inside the conveyor box for clamping and conveying plastic strips; The conveying guide rail is installed inside the conveying box and located between two sets of H-shaped roller assemblies of the same height. The conveying guide rail includes guide rail one and guide rail two, and there is a gap between guide rail one and guide rail two. Several conveying hoses are connected to the end of the conveying box, and their interiors are equipped with sliding grooves that match the cross-section of the plastic strips. The front-end module, connected to the end of the delivery hose, is used to guide the plastic strip into the slot of the bundled profiles; A fixing frame, located on the rear side of the front module, is used to clamp and fix bundled profiles; Positioning baffles, in multiple quantities, are respectively and vertically installed below the gap between guide rail one and guide rail two at the same height, and are staggered to control the length of each plastic strip inserted into the conveyor box, so that the plastic strips are distributed in a stepped shape after extending from the front module.

[0007] The plastic strips are guided from the conveyor box to the front module by a conveying hose. The flexibility of the hose can adapt to the situation where the end faces of the bundled profiles are not neatly arranged, so that the position of the plastic strips corresponds to the grooves of each profile. The strip threading operation can be completed without the need for precise alignment of the bundled profiles.

[0008] By setting multiple liftable positioning baffles, the length of each plastic strip inserted into the conveyor box is controlled, so that when the plastic strips extend from the front module, they form a stepped distribution with the bottom longer than the top. This creates physical operating space for operators to manually insert the plastic strips layer by layer, solving the problem of hand interference when multiple plastic strips are operated side by side.

[0009] By using a fixed frame to hold and fix the bundled profiles, the profiles are ensured not to shift during the strip threading process, thus improving the threading accuracy and stability.

[0010] The H-shaped roller assembly works in conjunction with the conveyor rail to simultaneously convey multiple plastic strips, improving the strip threading efficiency.

[0011] Furthermore, a rubber seat is embedded in the front of the conveyor box, and the rubber seat has a conical flare corresponding to the position of the feed inlet, which is used to guide the plastic strip to be inserted.

[0012] By setting a rubber seat with a tapered flare, even if the front end of the plastic strip is slightly off, it can slide into the feed inlet along the slope of the tapered flare, reducing the difficulty of alignment during manual feeding; the rubber material is elastic, which can prevent the hard inlet from scratching the surface of the plastic strip and protect the integrity of the plastic strip.

[0013] Furthermore, the two ends of the plurality of positioning baffles are respectively connected to two fixed vertical plates located inside the conveyor box. The two fixed vertical plates are respectively connected to the bottom of the conveyor box through electric push rods, and the synchronous lifting and lowering of the plurality of positioning baffles are controlled by the electric push rods.

[0014] By connecting multiple positioning baffles into one unit through a fixed vertical plate and driving them to rise and fall synchronously by an electric push rod, the consistency of the movement of each layer of positioning baffles is achieved, ensuring the accuracy of the stopping position of each layer of plastic strips, thereby ensuring the regularity of the stepped distribution; at the same time, the drive mechanism is simplified, reducing manufacturing costs and control complexity.

[0015] Furthermore, the inner wall of the sliding groove of the conveying hose is embedded with multiple wear-resistant steel wires. The wear-resistant steel wires are distributed along the contour line of the sliding groove and slide in contact with the surface of the plastic strip to form a rigid support skeleton, which is used to maintain the cross-sectional shape of the sliding groove and reduce conveying friction when the hose is bent.

[0016] A rigid support frame is formed by distributing wear-resistant steel wires along the contour line of the sliding groove. When the delivery hose bends, the frame can maintain the cross-sectional shape of the sliding groove from collapsing or twisting, ensuring that the plastic strip always slides smoothly in the correct direction inside the hose.

[0017] By forming point or line contact between the wear-resistant steel wire and the surface of the plastic strip, sliding friction is converted into rolling / point contact friction, which significantly reduces the conveying resistance, avoids wear from long-term use, and extends the service life of the hose.

[0018] Furthermore, the H-shaped roller assembly is a rubber-coated roller, with an elastic rubber layer covering its outer surface. The distance between two adjacent rubber-coated rollers is less than the height of the plastic strip, and the elastic deformation of the rubber layer is used to achieve elastic clamping of the plastic strip.

[0019] By setting the distance between adjacent upper and lower rollers to be less than the height of the plastic strip, and using the elastic deformation of the rubber-coated rollers to generate clamping force, there is no need to set up additional spring clamping or threaded adjustment mechanisms, which simplifies the equipment structure; at the same time, the elastic deformation of the rubber layer can automatically adapt to the thickness tolerance of the plastic strip, avoiding jamming or slippage caused by rigid clamping.

[0020] Furthermore, the front-end module includes an insert seat installed at the end of each delivery hose. The front end of the insert seat is provided with an insert block. The insert block is inserted into the corresponding empty slot on the profile, so that the delivery hose is connected with the corresponding plastic strip insert port in the profile. The fixed frame is provided with a limiting rake plate, which can move up and down and is used to press down and lock the tail of the insert seat after the insert seat is installed.

[0021] The insertion block of the insert holder is inserted into the empty slot of the profile, achieving precise alignment between the conveying hose and the plastic strip insertion port of the profile, thus improving the accuracy and efficiency of strip insertion. A limiting rake plate presses down and locks the tail of the insert holder, clamping it between the rake plate and the profile to prevent it from being pushed out during strip insertion. The structure is simple and reliably fixed. This insert holder is suitable for large-sized profiles with large cross-sections and multiple empty slots, enabling fully automatic strip insertion.

[0022] Furthermore, the front-end module includes a guide box, the front end of which is connected to each conveying hose. The guide box contains multiple arc-shaped guide tubes, each of which is connected to each conveying hose in a corresponding manner. The arc-shaped guide tubes shift and retract the plastic strips from their dispersed arrangement on each conveying hose into a stacked arrangement consistent with the end face arrangement of the bundled profiles. This allows the plastic strips to extend from the guide box and align with the slots on the bundled profiles. The operator then manually inserts the front end of each plastic strip into the corresponding slot of the profile.

[0023] The arc-shaped guide tube inside the guide box guides multiple plastic strips from a dispersed arrangement to a stacked arrangement consistent with the end face of the bundled profiles. This achieves the correspondence between the spatial position of the plastic strips and the position of the profile slot, solving the problem of installing inserts on small-sized profiles. After the plastic strips extend from the guide box and align with the profile slot, workers only need to perform translational alignment to insert the plastic strips into the profiles, without adjusting the direction or angle, making the operation simple and quick. This guide box is suitable for small-sized profiles with small cross-sections and only a single plastic strip insertion slot, enabling the insertion of strips into bundles of small-sized profiles through manual alignment.

[0024] Furthermore, the inner wall of the arc-shaped guide tube inside the guide box is provided with a contour sliding groove that matches the cross-section of the plastic strip, in order to keep the direction of the plastic strip unchanged in the bending path.

[0025] By setting a contour sliding groove on the inner wall of the arc-shaped guide tube that matches the cross-section of the plastic strip, the plastic strip is always limited by the contour groove in the bending path and cannot rotate or twist. This ensures that the direction of the plastic strip when it extends out of the guide box is consistent with the direction of the profile groove, reducing the difficulty of manual alignment.

[0026] This invention provides a plastic strip threading mechanism for bundled profiles. Through a stepped distribution formed by a liftable positioning baffle, and in conjunction with a flexible hose and two switchable front-end modules (insert-type or guide box type), it enables direct threading of bundled profiles without unpacking, solving the problem of misalignment when the end faces of bundled profiles are not neatly arranged. This invention features a simple structure, convenient operation, and wide applicability, simultaneously meeting the threading needs of both large-size multi-cavity profiles and small-size single-cavity profiles. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure provided by the present invention; Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure along the AA direction; Figure 3 This is a schematic diagram of the cross-section of the delivery hose; Figure 4 This is a cross-sectional view of the insert socket; Figure 5 This is the front view of the limiting rake plate; Figure 6 This is an assembly diagram showing the insertion socket when locked. Figure 7 This is a cross-sectional view of the guide box; In the diagram: 1. Conveyor box; 11. Inlet; 12. Outlet; 13. Rubber seat; 131. Conical flare; 2. H-type roller assembly; 3. Conveyor guide rail; 31. Guide rail one; 311. Guide flare; 32. Guide rail two; 33. Spacing gap; 4. Conveyor hose; 41. Sliding groove; 42. Wear-resistant steel wire; 5. Front-end module; 51. Insert seat; 511. Insert block; 52. Guide box; 53. Arc-shaped guide tube; 531. Contour sliding groove; 6. Fixed frame; 61. Limiting rake plate; 7. Positioning baffle; 71. Fixed vertical plate; 72. Electric push rod; 8. Plastic strip. Detailed Implementation

[0028] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0029] Example 1

[0030] like Figure 1 As shown, this embodiment provides a plastic strip threading mechanism for bundled profiles, including a conveying box 1, multiple sets of H-shaped roller assemblies 2, a conveying guide rail 3, several conveying hoses 4, a front end module 5, a fixing frame 6, a positioning baffle 7, and plastic strips 8.

[0031] The conveyor box 1 has a rectangular box structure, which can be made of aluminum alloy profile frame and steel plate welded together. It has a feed port 11 on the front side. The number of feed ports 11 corresponds to the number of plastic strips 8 and is arranged in an array.

[0032] As a preferred embodiment, a rubber seat 13 is embedded in the front of the conveyor box 1. The rubber seat 13 has a tapered flared opening 131 corresponding to the position of the feed inlet 11. The rubber seat 13 can be injection molded from nitrile rubber or polyurethane elastomer. The inlet size of the tapered flared opening 131 is larger than the cross-sectional size of the plastic strip 8, gradually narrowing along the insertion direction of the plastic strip 8 until it matches the size of the feed inlet 11. This tapered flared opening 131 guides the insertion of the plastic strip 8. Even if the front end of the plastic strip 8 is slightly off, it can still slide into the feed inlet 11 along the tapered surface. Simultaneously, the rubber material prevents scratching the surface of the plastic strip 8.

[0033] Multiple sets of H-shaped roller assemblies 2 are arrayed on the front and rear sides inside the conveyor box 1. Multiple drive rollers of the same height located on the front side are mounted on the same drive shaft. Both ends of this drive shaft are mounted on the side wall of the conveyor box 1 via bearing seats. One end of the drive shaft extends outward from the outside of the conveyor box 1 and is equipped with a double-groove sprocket. Multiple driven rollers of the same height located on the front side are mounted on the same driven shaft. This driven shaft is located above the drive shaft, and both ends are mounted on the side wall of the conveyor box 1 via bearing seats.

[0034] The drive rollers and driven rollers located at the rear are installed in the same way, that is, multiple drive rollers at the rear are installed on the same drive shaft, and multiple driven rollers at the rear are installed on the same driven shaft.

[0035] Each drive shaft has a double-grooved sprocket installed at one end extending from the outside of the conveyor box 1. The double-grooved sprockets of adjacent drive shafts are connected by chain drive, and one of the drive shafts is connected to the motor via a coupling. Thus, all drive rollers rotate synchronously under the drive of the motor, ensuring that the conveying speed of each plastic strip 8 is consistent.

[0036] The drive roller and driven roller are rubber-coated rollers with grooves on their circumference that match the shape of the plastic strip 8 for guiding and centering the plastic strip. The gap between the drive roller and the driven roller is less than the thickness of the plastic strip 8. The elastic deformation of the rubber coating on the outer surface of the roller generates a clamping force, causing the plastic strip 8 to be conveyed forward by the drive roller.

[0037] In use, the plastic strip 8 is fed in through the feed port 11. The plastic strip enters between the drive roller and the driven roller and is conveyed forward by the elastic clamping of the drive roller and the driven roller.

[0038] The conveyor guide rail 3 is installed inside the conveyor box 1 and is located between two sets of H-shaped roller assemblies 2 at the same height. For example... Figure 1 , Figure 2 As shown, the conveying guide rail 3 includes a first guide rail 31 and a second guide rail 32. A gap 33 is provided between the first guide rail 31 and the second guide rail 32. The gap 33 is used to accommodate the liftable positioning baffle 7.

[0039] Guide rail 1 31 and guide rail 2 32 can be made of square tubes, the cross-sectional dimensions (inner cavity dimensions) of which match the cross-sectional dimensions of the plastic strip 8, which passes through the inner cavity of the square tube. The inner wall of the square tube is polished to reduce friction, or a polytetrafluoroethylene (Teflon) coating can be sprayed onto the inner wall to further reduce the coefficient of friction. The square tube has good rigidity and straightness, providing a stable conveying channel for the plastic strip 8.

[0040] Guide rail 1 31 and guide rail 2 32 are fixedly installed inside the conveyor box 1 by brackets. The two adjacent layers of guide rail 1 31 are fixedly connected as one unit by brackets and fixed to the upper and lower surfaces of the conveyor box 1 by brackets; guide rail 2 32 is fixed in the same way.

[0041] As a preferred embodiment, the front ends (i.e., the ends facing the feed inlet 11) of guide rail 1 31 and guide rail 2 32 are respectively provided with guide flares 311. These guide flares 311 can be formed by flattening and flaring the front end of a square tube, or by welding a tapered guide sleeve to the front end of a square tube. The inlet size of the guide flare 311 is larger than the size of the plastic strip 8. This allows the plastic strip 8 to pass through the guide flare 311 and be smoothly inserted into guide rail 1 31 or guide rail 2 32, ensuring the smooth conveying of the plastic strip 8.

[0042] The conveyor box 1 has multiple discharge ports 12 at its end, the number of which corresponds to the number of inlets 11, and each discharge port 12 and its corresponding inlet 11 are located on the same conveying axis. The conveying hose 4 is a flexible hose, one end of which is fixed to the discharge port 12 at the end of the conveyor box 1 and secured with a clamp or screw. The conveying hose 4 can be made of polyurethane (PU) or rubber, and its interior has a sliding groove 41 that matches the cross-section of the plastic strip 8. Figure 3 As shown, the inner wall of the sliding groove 41 is embedded with multiple wear-resistant steel wires 42. The wear-resistant steel wires 42 are distributed along the outline of the sliding groove 41, and some of them are exposed on the inner wall surface of the sliding groove 41, forming a sliding contact with the surface of the plastic strip 8, thus forming a rigid support skeleton. The wear-resistant steel wires 42 can be made of stainless steel wire with a diameter of 0.5-1.0 mm.

[0043] During installation, one end of the conveying hose 4 is fixed to the outlet at the end of the conveying box 1 and locked with clamps or screws. During use, when the conveying hose 4 needs to be bent to adapt to the spatial layout, the rigid skeleton formed by the wear-resistant steel wire 42 can maintain the cross-sectional shape of the sliding groove 41 from collapsing, ensuring that the plastic strip 8 passes smoothly.

[0044] Multiple positioning baffles 7 are provided, each vertically mounted below the gap 33 between guide rail 1 31 and guide rail 2 32 at the same height. The positioning baffles 7 are staggered along the conveying direction of the plastic strip 8, meaning that the installation positions of the positioning baffles 7 at different heights are different in the conveying direction. Specifically, the lower positioning baffle 7 is installed in the conveying direction away from the front end of the conveyor box 1, maximizing the length of the lower plastic strip 8 extending from the front end module 5. The positioning baffles 7 of each subsequent layer are staggered towards the front end, with the length of the plastic strip 8 extending from the front end module 5 decreasing with each layer. The upper positioning baffle 7 is installed in the conveying direction closest to the front end of the conveyor box 1, minimizing the length of the upper plastic strip 8 extending from the front end module 5. Thus, the plastic strips 8 of each layer extend from the front end module 5 in a stepped distribution, longer at the bottom and shorter at the top.

[0045] Multiple positioning baffles 7 are connected at both ends to two fixed vertical plates 71 located inside the conveyor box 1. The two fixed vertical plates 71 are connected to the bottom of the conveyor box 1 via electric push rods 72. The positioning baffles 7 can be made of steel plate, and their thickness is slightly less than the width of the gap 33 to ensure smooth lifting and lowering. The fixed vertical plates 71 are rectangular metal plates, vertically arranged on both sides inside the conveyor box 1. The fixed end of the electric push rod 72 is connected to the bottom of the conveyor box 1, and the telescopic end is connected to the fixed vertical plate 71.

[0046] Upon initial use, the electric push rod 72 drives the fixed vertical plate 71 upward, causing all positioning baffles 7 to rise synchronously. The operator manually inserts the front ends of each layer of plastic strips 8 into their corresponding feed inlets 11 and pushes them until they contact the positioning baffles 7. Because the positioning baffles 7 are staggered in the conveying direction, when each layer of plastic strips 8 is inserted into the conveyor box 1 through the feed inlet 11, it is blocked by its corresponding positioning baffle 7, stopping at different positions and forming a stepped distribution with the lower end longer than the upper end. After the initial positioning is completed, the electric push rod 72 drives all positioning baffles 7 to descend synchronously.

[0047] During subsequent strip threading, the positioning baffle 7 remains lowered and does not rise. Once the end of the plastic strip 8 is fully inside the conveyor box 1, and the end of the topmost plastic strip 8 separates from the H-shaped roller assembly 2 at the front of the conveyor box 1, the control device stops. The operator then manually inserts new plastic strips 8 one by one into the corresponding feed inlets 11, ensuring the front end of the new strip directly presses against the end of the original strip 8. The thrust of the subsequent plastic strips 8 pushes the original strip 8 forward, maintaining the stepped distribution of each layer of plastic strips 8. This cycle is repeated to achieve continuous strip threading.

[0048] The fixing frame 6 can adopt an aluminum alloy profile frame structure, which is concave in shape, with a support surface on the bottom surface inside and pressure plates on both sides. The pressure plates on both sides are connected to the telescopic ends of electric push rods or cylinders, and the electric push rods or cylinders drive the pressure plates on both sides to move synchronously towards the middle, pressing and fixing the bundled profiles from both sides.

[0049] During installation, the staff fixes the conveyor box 1 to the workbench or special frame using the mounting base at its bottom, and connects the conveyor hose 4 to the conveyor box 1. The fixing frame 6 is set on the rear side of the front-end module 5 and fixed on the workbench or frame, ensuring that the center line of the fixing frame 6 is aligned with the outlet of the front-end module 5.

[0050] When in use, place the bundled profiles into the fixed frame 6, start the electric push rod or cylinder, and the two side clamping plates move towards the middle simultaneously to clamp and fix the bundled profiles.

[0051] Example 2

[0052] Based on Example 1, this example provides specific limitations for the front-end module 5, making it suitable for large-size multi-cavity profiles.

[0053] like Figure 4 , Figure 5 and Figure 6 As shown, the front-end module 5 includes an insert seat 51 installed at the end of each delivery hose 4. The insert seat 51 can be injection molded from nylon or polyoxymethylene (POM) engineering plastic, and has a through channel communicating with the sliding groove 41 of the delivery hose 4. The front end of the insert seat 51 is provided with an insert block 511, the shape of which matches the shape of the reserved slot on the profile. The outer surface of the insert block 511 is provided with a guide bevel for easy insertion.

[0054] A limiting rake plate 61 is inserted into the front of the interior of the fixed frame 6. The limiting rake plate 61 is in the shape of a rake (with comb teeth). After the insert seat 51 is installed, the limiting rake plate 61 is inserted downward into the fixed frame 6, blocking the rear side of each insert seat 51, locking the insert seat 51 and preventing the insert seat 51 from being pushed out by the pushing force during the strip insertion process.

[0055] In use, the conveying hoses 4 equipped with insert seats 51 are installed one by one onto the conveying box 1 and secured with clamps or screws. The bundled profiles are then placed into the fixing frame 6 and clamped in place. The operator holds the insert seat 51 and inserts the insert block 511 at its front end into the corresponding empty slot on the profile. At this point, the through-channel of the insert seat 51 precisely aligns with the plastic strip insertion port of the profile. Next, the limiting rake plate 61 is inserted downwards into the slot of the fixing frame 6. The limiting rake plate 61 blocks the rear side of each insert seat 51, locking the insert seat 51 onto the fixing frame 6 to prevent it from being pushed out and detaching from the profile during the strip insertion process. Then, the device can be controlled to convey the plastic strip 8. The plastic strip 8 passes through the conveying box 1, the conveying hose 4, and the insert seat 51, directly entering the plastic strip insertion port of the profile. After the strip insertion is complete, the limiting rake plate 61 is removed, the insert seat 51 is removed, and the bundled profiles with the plastic strip inserted are taken out.

[0056] It should be noted that when removing the bundled profiles, since the plastic strips 8 are distributed in a stepped pattern, the removal method is to push the bundled profiles a certain distance along the conveying direction of the plastic strips 8, so that the plastic strips 8 that are not fully inserted into the profiles are removed from the conveying hose 4, and then the bundled profiles can be removed. Furthermore, before removing the bundled profiles, since some plastic strips 8 are not fully inserted, workers can use a push plate or rubber mallet to push or tap the ends of the partially inserted plastic strips 8 to fully insert them into the profiles, completing the entire strip insertion process.

[0057] Example 3

[0058] Based on Embodiment 1, this embodiment provides another specific structure for the front-end module 5, which is suitable for small-sized profiles with a small cross-section and only a single plastic strip insertion slot.

[0059] like Figure 7 As shown, the front-end module 5 includes a guide box 52. The guide box 52 is a rectangular box, which can be formed by aluminum alloy casting or sheet metal welding, and its front end is connected to the end of each delivery hose 4. The guide box 52 has multiple arc-shaped guide tubes 53 inside, and each arc-shaped guide tube 53 is connected to each delivery hose 4 in a one-to-one correspondence. The arc-shaped guide tube 53 is a metal tube, which can be formed by bending stainless steel tube or aluminum alloy tube, and its inner wall has a contour sliding groove 531 that matches the cross-section of the plastic strip 8. The shape of the contour sliding groove 531 is exactly the same as the cross-section of the plastic strip 8, which is used to keep the direction of the plastic strip 8 unchanged in the bending path. The bending radius of the arc-shaped guide tube 53 should be large enough to ensure that the plastic strip 8 can pass smoothly.

[0060] The outlet ends of the arc-shaped guide tubes 53 are stacked and arranged in a manner corresponding to the arrangement of the end faces of the bundled profiles. Specifically, the outlet ends of multiple arc-shaped guide tubes 53 are stacked in a layered and aligned manner on the outlet face of the guide box 52, with the spacing and number of layers being the same as the arrangement of the profiles in the bundle.

[0061] In use, connect each of the conveying hoses 4 on the guide box 52 to the conveying box 1. Fix the guide box 52 on the workbench so that its outlet end faces the end face of the bundled profiles 8 held in the fixing frame 6. Then place the bundled profiles into the fixing frame 6 and clamp them in place. At this time, the control device starts to convey the plastic strips 8 and starts the conveying mechanism. The plastic strips 8 enter the guide box 52 through the conveying box 1 and the conveying hoses 4. Under the guidance of the arc-shaped guide tube 53, the plastic strips 8 gradually move and contract from the dispersed arrangement of the conveying hoses 4, and finally present a stacked arrangement at the outlet of the guide box 52 that is consistent with the arrangement of the end faces of the bundled profiles. The front ends of each plastic strip 8 are distributed in a stepped shape with the bottom longer than the top (controlled by the positioning baffle 7).

[0062] At this point, the worker starts with the bottommost (longest) plastic strip 8, holding (or using a tool) the front end of the plastic strip 8, aligning it horizontally with the corresponding profile groove, and then pushing it in. Since the direction of the plastic strip 8 is fixed by the contour sliding groove 531, the worker only needs to perform horizontal alignment, without adjusting the direction or angle. After inserting all the plastic strips 8 layer by layer, the device can be controlled to continue feeding the plastic strips 8 until they are fully inserted into the profile.

[0063] In this embodiment, the arc-shaped guide tube 53 is made of metal, which has good rigidity and wear resistance, and is not easily deformed during long-term use. The inner wall of the contour sliding groove 531 can be polished or coated with Teflon to further reduce frictional resistance.

[0064] In this embodiment, since the plastic strip 8 adopts the same stepped distribution as in Embodiment 2, its removal method is the same as that in Embodiment 2. Furthermore, the insertion method for the partially inserted plastic strip 8 is also to push it with a pusher or tap it with a rubber mallet to complete the final insertion, so as to ensure the smooth progress of the entire strip insertion work.

[0065] The above technical solutions only embody the preferred technical solutions of the present invention. Any modifications that may be made by those skilled in the art to certain parts thereof embody the principles of the present invention and fall within the protection scope of the present invention.

Claims

1. A plastic strip threading mechanism for bundled profiles, characterized in that, include: The conveyor box has a feed inlet on its front side; Multiple sets of H-shaped roller assemblies are arrayed on the front and rear sides inside the conveyor box for clamping and conveying plastic strips; The conveying guide rail is installed inside the conveying box and located between two sets of H-shaped roller assemblies of the same height. The conveying guide rail includes guide rail one and guide rail two, and there is a gap between guide rail one and guide rail two. Several conveying hoses are connected to the end of the conveying box, and their interiors are equipped with sliding grooves that match the cross-section of the plastic strips. The front-end module, connected to the end of the delivery hose, is used to guide the plastic strip into the slot of the bundled profiles; A fixing frame, located on the rear side of the front module, is used to clamp and fix bundled profiles; Positioning baffles, in multiple quantities, are respectively and vertically installed below the gap between guide rail one and guide rail two at the same height, and are staggered to control the length of each plastic strip inserted into the conveyor box, so that the plastic strips are distributed in a stepped shape after extending from the front module.

2. The plastic strip threading mechanism for bundled profiles according to claim 1, characterized in that, A rubber seat is fitted on the front side of the conveyor box. The rubber seat has a conical flare corresponding to the position of the feed inlet, which is used to guide the insertion of the plastic strip.

3. The plastic strip threading mechanism for bundled profiles according to claim 1, characterized in that, Both ends of the multiple positioning baffles are respectively connected to two fixed vertical plates located inside the conveyor box. The two fixed vertical plates are respectively connected to the bottom of the conveyor box through electric push rods, and the synchronous lifting and lowering of the multiple positioning baffles are controlled by the electric push rods.

4. A plastic strip threading mechanism for bundled profiles according to claim 1, characterized in that, The inner wall of the sliding groove of the conveying hose is embedded with multiple wear-resistant steel wires. The wear-resistant steel wires are distributed along the outline of the sliding groove and slide in contact with the surface of the plastic strip to form a rigid support skeleton, which is used to maintain the cross-sectional shape of the sliding groove and reduce conveying friction when the hose is bent.

5. A plastic strip threading mechanism for bundled profiles according to claim 1, characterized in that, The H-shaped roller assembly is a rubber-coated roller, with an elastic rubber layer covering its outer surface. The distance between two adjacent rubber-coated rollers is less than the height of the plastic strip, and the elastic deformation of the rubber layer is used to achieve elastic clamping of the plastic strip.

6. A plastic strip threading mechanism for bundled profiles according to claim 1, characterized in that, The front-end module includes a cartridge seat installed at the end of each delivery hose. The front end of the cartridge seat is provided with a cartridge block. The cartridge block is inserted into the corresponding empty slot on the profile so that the delivery hose is connected to the corresponding plastic strip insertion port in the profile. The fixed frame is provided with a limiting rake plate. The limiting rake plate can move up and down and is used to press down and lock the tail of the cartridge seat after the cartridge seat is installed.

7. A plastic strip threading mechanism for bundled profiles according to claim 1, characterized in that, The front-end module includes a guide box, the front end of which is connected to each conveying hose. The guide box contains multiple arc-shaped guide tubes, each of which is connected to a corresponding conveying hose. The arc-shaped guide tubes move the plastic strips from their dispersed arrangement on the conveying hoses to a stacked arrangement consistent with the end face arrangement of the bundled profiles. This ensures that the plastic strips, after extending from the guide box, correspond to the slot positions of the bundled profiles. The operator then manually inserts the front end of each plastic strip into the corresponding slot of the profile.

8. A plastic strip threading mechanism for bundled profiles according to claim 7, characterized in that, The inner wall of the arc-shaped guide tube inside the guide box is provided with a contour sliding groove that matches the cross-section of the plastic strip, so as to keep the direction of the plastic strip unchanged in the bending path.

Images