An automatic assembly device for automotive screw foam gaskets

Abstract

The present invention relates to an automatic assembly device for automotive screw foam gaskets, which includes a frame, a turntable, and a plurality of screw positioning seats evenly distributed on the turntable. Along the rotation direction of the turntable, the frame is sequentially provided with a screw feeding station, a pressing station, a gasket sleeving station, and a blanking station. The screw conveying component and the screw feeding component realize the directional arrangement and batch transfer of screws. The manipulator at the gasket sleeving station is equipped with a foam transfer jig, which accurately grabs the foam gasket and sleeves it onto the surface of the screw, and cooperates with the foam pressing plate to enhance the fitting degree. The foam gasket conveying component realizes continuous feeding through the bottom paper peeling and anti-sticking plate feeding. The waste discharging component synchronously removes waste materials, and the blanking component batch removes the finished screws, realizing the full-automatic assembly of screw foam gaskets, significantly improving the efficiency and yield, effectively preventing problems such as foam tearing and adhesive failure caused by manual operation, and meeting the large-scale production requirements of automotive waterproof and shock-absorbing screws.

Description

Technical Field

[0001] The present invention relates to the field of automatic ferrule fitting for automotive screws, and particularly to an automatic assembly device for foam gaskets of automotive screws. Background Art

[0002] In the field of automotive manufacturing, some key connection parts (such as double-headed screws for roof racks and fixing screws for new energy battery boxes) need to have both structural strength and sealing and shock-absorbing functions. Such automotive screws usually need to be sleeved with foam gaskets on the outer thread section, and use their elastic compression characteristics to meet the requirements of waterproofing, shock absorption and stress buffering. Due to the soft material and small volume of such gaskets, at present, the sleeving is mainly completed by manual operation to ensure its integrity and the accuracy of the assembly position.

[0003] However, the current manual sleeving operation has significant drawbacks: First, the manual operation efficiency is low and the process controllability is insufficient. During the sleeving process of the foam gasket, it is easy to be torn due to uneven force application, resulting in deterioration of the sealing performance and an increase in the rework rate; Second, the existing automatic equipment is limited by the low strength characteristics of the foam material and is difficult to achieve stable grasping and precise positioning, resulting in limited improvement in the yield. In addition, due to the adhesiveness of the foam gasket, when performing manual sleeving work, it is inevitable to touch the glue area, resulting in a decrease in adhesiveness and affecting the quality of the entire finished product. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an automatic assembly device for foam gaskets of automotive screws in view of the above-mentioned deficiencies of the prior art.

[0005] To achieve the above object, the present invention provides the following technical solution: An automatic assembly device for foam gaskets of automotive screws, including a frame and a turntable intermittently rotating on the frame. A number of screw positioning seats are arranged at equal intervals on the turntable. A number of positioning holes for accommodating screws are provided on the screw positioning seats. The frame is sequentially provided with a screw feeding station, a screw sleeving gasket station and a screw discharging station along the rotation direction of the turntable. The screw positioning seats intermittently stay in the screw feeding station, the screw sleeving gasket station and the screw discharging station in sequence. A screw conveying component for conveying screws and a screw feeding component for sending one or more screws on the screw conveying component to the screw positioning seats are provided at the screw feeding station. A manipulator and a foam gasket conveying component are provided at the screw sleeving gasket station. The manipulator is loaded with a foam transfer jig, and the foam gasket on the foam gasket conveying component is sleeved onto the screw in the screw sleeving gasket station through the foam transfer jig. A screw discharging component for sending the sleeved screw out of the turntable from the screw positioning seat is provided at the screw discharging station.

[0006] With the above technical solution, the intermittent rotation of the turntable drives the screw positioning seat to sequentially enter the feeding, ferrule, and discharging stations according to a preset rhythm, forming a cyclic operation flow. After the screw conveying component arranges the screws in a specific orientation, the screw feeding component transfers them to the positioning holes of the turntable in batches. The manipulator is equipped with a foam transfer jig, which is fed by the foam gasket conveying component, and sleeves the foam gasket onto the designated position of the screw. The discharging component removes the assembled screws from the turntable through the clamping mechanism. The intermittent stop mechanism of the turntable throughout the process ensures the precise connection of operations at each station, avoiding process interference. The multi-hole design of the screw positioning seat supports batch synchronous processing, improving the assembly efficiency. The cooperation between the manipulator and the foam transfer jig enables the lossless sleeving of the foam gasket, solving the pain point of easy tearing in manual operation. The overall system, through modular station layout and automated processes, significantly reduces the dependence on labor and ensures process consistency, meeting the large-scale production requirements for automotive screw waterproofing and shock absorption scenarios, greatly improving the screw assembly efficiency and the finished product rate.

[0007] Further, the foam transfer jig includes a foam transfer frame provided at the working end of the manipulator, a plurality of foam adsorption cylinders provided on the foam transfer frame, and a foam pressing plate provided on the foam transfer frame. The end of the foam adsorption cylinder is provided with a plug-in portion for inserting into the foam gasket. A stepped adsorption surface is formed between the plug-in portion and the foam adsorption cylinder. A plurality of foam vacuum adsorption holes are provided around the stepped adsorption surface. A first screw relief hole is provided at the center of the plug-in portion. A plurality of second screw relief holes corresponding one-to-one to the positioning holes on the screw positioning seat are provided on the foam pressing plate.

[0008] With the above technical solution, the plug-in portion at the end of the foam adsorption cylinder is inserted into the central hole of the foam gasket. The vacuum adsorption holes around the stepped adsorption surface generate a uniform adsorption force on the foam. At the same time, the first screw relief hole at the center of the plug-in portion provides a clearance space for the screw head. The second screw relief holes on the foam pressing plate correspond one-to-one to the positioning holes, ensuring that only the edge of the foam is contacted by the pressing plate during the foam sleeving process without interfering with the screw body, and providing comprehensive pressure during the pressing of the foam gasket to avoid the occurrence of local non-pressing and warping. The design of inserting the plug-in portion into the central hole of the foam avoids foam deformation or tearing during grasping. The cooperation between the stepped adsorption surface and the vacuum adsorption holes enables the stable grasping and precise positioning of the foam. The double screw relief hole structure ensures non-contact sleeving between the foam transfer jig and the screw, preventing scratching of the screw surface. The synchronous downward pressing action of the foam pressing plate enhances the fit between the foam and the screw, improving the assembly quality and yield.

[0009] Furthermore, the foam gasket conveying assembly includes a foam conveying rack arranged on the frame, a foam roll conveying disk rotatably arranged on the foam conveying rack for mounting the foam roll, a waste collection reel rotatably arranged on the foam conveying rack for recycling the foam base paper, and a foam conveying motor driving the waste collection reel to rotate and rewind. A stripping paper board and an anti-sticking plate are provided at one end of the foam conveying rack away from the foam roll conveying disk, a stripping channel for the foam base paper to pass through is provided between the anti-sticking plate and the stripping paper board, and the foam conveying motor is used to drive the waste collection reel to rotate and rewind, and then deliver the foam gasket after the foam base paper is peeled off to the anti-sticking plate.

[0010] By adopting the above technical scheme, the foam gasket roll with the backing paper is released through the foam roll conveyor disc, and the foam conveying motor drives the waste collection reel to rewind the backing paper, so that the foam gasket is peeled off the backing paper through the paper stripping channel and then laid flat on the surface of the anti-sticking plate. The spacing design between the peeling paper board and the anti-sticking plate ensures that the foam gasket is not displaced during the peeling process. The low-viscosity surface of the anti-sticking plate prevents accidental adhesion of the foam. The continuous winding and peeling mechanism realizes the automatic supply of the foam gasket and reduces the frequency of manual material changing. The synergistic effect of the anti-sticking plate and the paper stripping channel ensures the position accuracy of the foam gasket after peeling and avoids misalignment of the grasping. The backing paper recovery function prevents waste accumulation from interfering with the operation process and provides a power source for the front-stage action of the foam, thereby improving the system operation stability and adapting to the needs of high-speed automated assembly scenarios.

[0011] Furthermore, a foam waste discharge assembly is provided on one side of the frame corresponding to the foam gasket conveying assembly, and the foam waste discharge assembly includes a foam waste discharge plate arranged opposite to the anti-sticking plate, a foam waste discharge transverse movement cylinder driving the foam waste discharge plate to approach or move away from the anti-sticking plate, and a foam waste discharge lifting cylinder driving the foam waste discharge transverse movement cylinder to axially lift and lower the foam waste discharge plate, and the foam waste discharge plate is used to bring the foam waste on the anti-sticking plate away from the foam gasket conveying assembly.

[0012] By adopting the above technical scheme, the foam waste discharge plate is driven to move horizontally and vertically to the surface of the anti-sticking plate through the coordinated action of the foam waste discharge transverse movement cylinder and the lifting cylinder. The foam waste is grabbed by the physical contact or adsorption function of the waste discharge plate, and then moved laterally out of the anti-sticking plate area to transfer the waste to a preset collection position. The directional movement design of the foam waste discharge plate realizes the rapid separation of waste and effective foam gaskets to avoid waste accumulation interfering with subsequent foam feeding. The cylinder drive controls the precise positioning of the waste discharge plate to ensure the reliability of waste grabbing. The automated waste removal mechanism reduces the frequency of manual cleaning, improves the continuous operation capability of the equipment, and reduces the risk of foam gasket contamination.

[0013] Furthermore, the foam waste discharge assembly also includes a waste chamber arranged between the foam waste discharge lifting cylinder and the foam conveying rack, the foam waste discharge plate is provided with a plurality of gasket yield grooves corresponding to the foam gaskets, and the bottom surface of the foam waste discharge plate is provided with a plurality of waste vacuum adsorption holes and waste locking needles.

[0014] With the above technical solution, the waste foam is adsorbed by the waste vacuum adsorption holes on the bottom surface of the foam waste discharge plate, and the waste locking needle is used to penetrate into the edge of the waste to achieve physical fixation, improving the stability of the waste discharge process. The washer relief grooves correspond one by one to the positions of the effective foam washers, ensuring that only the waste is contacted when the waste discharge plate is pressed down while avoiding the normal washers. The waste chamber centrally collects the waste transferred by the waste discharge plate. For the entire structure, the dual fixation mechanism of vacuum adsorption and locking needle improves the reliability of waste grasping, prevents waste from falling off, and stably discharges the material. The design of the washer relief grooves avoids interfering with the position accuracy of the normal foam washers during the waste discharge operation. The waste chamber is integrated at the end of the waste discharge path, realizing automatic waste collection and centralized treatment, reducing the frequency of manual intervention, and ensuring the continuous operation efficiency of the production line.

[0015] Furthermore, the screw conveying assembly includes a vibrating bowl, a linear vibrating mechanism and a screw arranging mechanism. The screw arranging mechanism includes an arranging partition plate, screw entry holes opened on the arranging partition plate, a misaligned arranging plate arranged at one end of the arranging partition plate away from the linear vibrating mechanism, and an arranging driving mechanism for driving the misaligned arranging plate to horizontally reciprocate along the arranging partition plate. A plurality of horizontally arranged screw arranging grooves are provided on the misaligned arranging plate. One end of each screw arranging groove facing the arranging partition plate has a notch that can be correspondingly communicated with the screw entry hole. One end of the linear vibrating mechanism is communicated with the vibrating bowl, and the other end is communicated with the screw entry hole, and the screws screened in the vibrating bowl are sent into the misaligned arranging plate one by one through the screw entry holes.

[0016] With the above technical solution, the vibrating bowl screens the screws and conveys them to the linear vibrating mechanism in a directed manner. The linear vibrating mechanism linearly transfers the screws to the screw entry holes of the arranging partition plate. The misaligned arranging plate horizontally reciprocates, so that the notches of the screw arranging grooves are periodically aligned with the screw entry holes, receiving the screws one by one and horizontally arranging them into a preset queue. The arranging driving mechanism controls the displacement rhythm of the misaligned arranging plate to ensure the orderly distribution of the screws. The cooperation between the vibrating bowl and the linear vibrating mechanism realizes the continuous and directed supply of the screws, avoiding chaotic postures. The dynamic docking mechanism between the notch of the misaligned arranging plate and the screw entry hole ensures that the screws are imported into the arranging grooves one by one, preventing jamming or overlapping. The batch layout of the horizontal arranging grooves supports the synchronous transfer of multiple screws, improving the feeding efficiency and the connection stability of the automated process, and adapting to the batch processing requirements of the screws.

[0017] Furthermore, the arranging driving mechanism is a linear driving module. The output end of the linear driving module is connected to the misaligned arranging plate. An entry blocking cylinder is arranged at the screw entry hole of the arranging partition plate. An entry blocking plate is arranged at the output end of the entry blocking cylinder. The entry blocking cylinder drives the entry blocking plate to approach or move away from the screw entry hole, thereby blocking and releasing the screws at the screw entry hole.

[0018] With the above technical solution, the misaligned plate is driven by a linear drive module to move horizontally back and forth, so that the notch of the screw alignment groove is periodically aligned with the screw entry hole, receiving the screws transmitted by the linear vibration mechanism. The entry blocking cylinder drives the entry blocking plate to dynamically block or release the screw entry hole, controlling the flow and rhythm of the screws entering the alignment groove, and avoiding jamming of the alignment groove caused by an excessive influx of screws. During the whole process, the high-precision displacement of the linear drive module ensures the alignment accuracy between the alignment groove and the entry hole, improving the screw alignment efficiency. The real-time opening and closing control of the entry blocking cylinder realizes the precise synchronization of the screw feeding and alignment actions, preventing screw accumulation or leakage. The dynamic blocking mechanism adapts to the alignment requirements of different sizes of screws, enhancing the equipment compatibility, while reducing the risk of mechanical interference and ensuring the continuous and stable operation of the production line.

[0019] Further, the screw feeding assembly includes a screw feeding rack arranged on one side of the turntable, a feeding transverse cylinder arranged on the screw feeding rack, a feeding lifting plate arranged at the output end of the feeding transverse cylinder, a feeding lifting cylinder arranged on the feeding lifting plate, and a feeding finger cylinder arranged at the output end of the feeding lifting cylinder. Two relatively arranged screw feeding clamping plates are arranged at the output end of the feeding finger cylinder. A screw feeding clamping groove is correspondingly formed between the screw feeding clamping plates. The feeding finger cylinder transfers multiple screws on the misaligned plate to the screw positioning seat synchronously driven by the feeding transverse cylinder and the feeding lifting cylinder.

[0020] With the above technical solution, the horizontal displacement is controlled by the feeding transverse cylinder, and the vertical height is adjusted by the feeding lifting cylinder, driving the feeding finger cylinder to move the screw feeding clamping plate to the misaligned plate, and using the clamping groove to batch-grab the aligned screws. Subsequently, through the combined movement of the transverse and lifting cylinders, the screws are precisely transferred to the corresponding holes of the turntable positioning seat. The structural design of the clamping groove ensures that the screws have no slip or deflection during the transfer process. The whole structure realizes the precise positioning and rapid transfer of the screws through the sequential coordinated actions of multiple cylinders, improving the feeding efficiency. The symmetrical layout of the clamping groove adapts to the grasping requirements of screws with different diameters, ensuring the clamping stability. The batch synchronous feeding mechanism (transferring 4-8 screws at a time) reduces the waiting time of the turntable and optimizes the production line rhythm.

[0021] Furthermore, the linear vibration mechanism includes a linear vibrator, a screw conveyor rack and a screw screening plate arranged above the linear vibrator. A screw screening channel for linear screw conveyance is provided between the screw conveyor rack and the screw screening plate. One end of the screw screening channel communicates with the vibrating bowl, and the other end communicates with the screw feeding hole. A screw flipping mechanism is provided between the screw feeding assembly and the staggered arrangement plate for gripping and flipping multiple screws on the staggered arrangement plate and then feeding them to the screw feeding assembly. The screw flipping mechanism includes a screw flipping rack arranged on one side of the staggered arrangement plate, a flipping lifting cylinder arranged on the screw flipping rack, a screw rotating cylinder arranged at the output end of the flipping lifting cylinder, and a flipping finger cylinder arranged at the output end of the screw rotating cylinder. The flipping finger cylinder is arranged above the staggered arrangement plate, and two relatively arranged screw flipping clamping plates are provided at the output end of the flipping finger cylinder. A screw flipping clamping notch is correspondingly formed between the screw flipping clamping plates.

[0022] With the above technical solution, the linear vibrator of the linear vibration mechanism drives the screws in the screw screening channel to move directionally to the staggered arrangement plate. The limiting structure of the screening channel ensures that the screws are arranged in a preset posture. The screw flipping mechanism adjusts the height through the flipping lifting cylinder and drives the flipping finger cylinder to rotate 180° through the screw rotating cylinder, so that the flipping clamping notch grabs the screws on the staggered arrangement plate and adjusts their directions to adapt to the feeding posture requirements of the turntable positioning holes. The linear vibration conveying mechanism of the screw screening channel ensures the continuity and direction consistency of the screw arrangement, avoiding jams caused by incorrect postures. The lifting / rotation coordinated action of the flipping mechanism realizes the precise posture adjustment of the screws, ensuring accurate alignment between the screws and the positioning holes. The symmetric design of the flipping clamping notch adapts to different screw sizes, avoiding thread damage during the clamping process, and improving the feeding yield and the compatibility of the automated process.

[0023] Further, along the rotation direction of the turntable, a screw pressing station is also provided between the screw feeding station and the screw sleeving washer station on the frame. There are four equally spaced screw positioning seats on the turntable. At least two positioning holes for accommodating screws are provided on the screw positioning seats. At the screw pressing station, there is a screw pressing frame installed on the frame, a screw pressing cylinder arranged on the screw pressing frame, and a screw pressing lifting plate arranged at the output end of the screw pressing cylinder. A plurality of hydraulic buffers corresponding one by one to the positioning holes on the screw positioning seats are arranged on the screw pressing lifting plate. The hydraulic buffers are arranged directly above the turntable and axially approach or move away from the turntable driven by the screw pressing cylinder. The screw feeding assembly includes a screw feeding frame arranged on one side of the turntable, a feeding transverse moving frame arranged on the screw feeding frame, a feeding transverse moving cylinder arranged on the feeding transverse moving frame, a feeding lifting cylinder arranged at the output end of the feeding transverse moving cylinder, and a feeding finger cylinder arranged at the output end of the feeding lifting cylinder. Two relatively arranged screw feeding clamping plates are arranged at the output end of the feeding finger cylinder. A plurality of screw feeding clamping slots are correspondingly formed between the screw feeding clamping plates. The feeding finger cylinder, driven by the feeding transverse moving cylinder and the feeding lifting cylinder, sends a plurality of screws on the screw positioning seats in the screw feeding station out of the turntable in batches.

[0024] With the above technical solution, a screw pressing station is added in the middle of the turntable. After the screws are fed, the hydraulic buffer is driven by the pressing cylinder to press down, stably pressing the screws into the positioning holes to prevent the screws from shifting when the turntable rotates. The feeding assembly, through the coordinated action of the feeding transverse moving cylinder and the lifting cylinder, drives the clamping slots of the feeding finger cylinder to batch grab the screws with washers, horizontally move them out of the turntable and release them to the external collection device. The elastic pressing mechanism of the hydraulic buffer avoids over-pressing damage to the screws, and at the same time ensures the vertical positioning accuracy of the screws. The batch grabbing design of the feeding clamping slots matches the turntable rhythm, improving the feeding efficiency. The modular layout of the pressing station and the feeding station optimizes the space utilization rate of the production line, reduces the risk of process interference, and adapts to the requirements of high-rhythm continuous production scenarios.

[0025] The beneficial effects of the present invention are as follows:

[0026] 1. Through the intermittent rotation of the turntable and the multi-station coordination, the continuous cyclic assembly of screws and foam gaskets is realized, eliminating the beat delay caused by manual intervention and greatly improving the assembly efficiency.

[0027] 2. The foam transfer jig inserts into the central hole of the foam through the insertion part, and uniformly grabs the foam gasket in combination with the vacuum adsorption holes on the stepped adsorption surface. The sleeving positioning accuracy is high, avoiding the foam tearing caused by uneven manual force application and significantly improving the yield.

[0028] 3. The foam gasket conveying assembly peels off the base paper through the paper stripping channel, and the anti-sticking plate realizes continuous feeding of the foam. The waste discharging assembly uses vacuum adsorption and locking pins to synchronously remove waste, ensuring the continuous operation of the production line and realizing stable and efficient automatic supply of foam gaskets.

[0029] 4. The misaligned arrangement plate of the screw conveying assembly adapts to different specifications of screws, and realizes flexible production by dynamically adjusting the feeding rhythm. The foam transfer fixture can be quickly changed to adapt to various foam sizes.

[0030] 5. The elastic pressing mechanism of the hydraulic buffer avoids over-pressing damage to the screws, and the design of the relief holes on the foam pressing plate ensures uniform pressing of the foam perimeter without warping problems.

[0031] 6. The full-process automation reduces the dependence on labor, greatly reduces the labor cost, and the automatic removal of waste and the recycling of the base paper reduce material waste.

[0032] 7. For high-precision waterproof and shock-absorbing scenarios such as roof rack screws and new energy battery box screws, the automatic assembly ensures that the adhesive surfaces of the foam gaskets and screws are free of contact pollution, improving the quality of the finished products.

[0033] The present invention will be further described below with reference to the accompanying drawings. Description of the Drawings

[0034] Figure 1 Is a three-dimensional schematic of an embodiment of the present invention Figure 1 .

[0035] Figure 2 Is a three-dimensional schematic of an embodiment of the present invention Figure 2 .

[0036] Figure 3 Is a top view of an embodiment of the present invention.

[0037] Figure 4 Is a three-dimensional state diagram of the foam transfer fixture of an embodiment of the present invention when working at the foam gasket conveying assembly.

[0038] Figure 5 Is a three-dimensional schematic diagram and a partial enlarged view of the manipulator and the foam transfer fixture of an embodiment of the present invention.

[0039] Figure 6 Is a three-dimensional schematic diagram and a partial enlarged view of the foam waste discharging assembly of an embodiment of the present invention.

[0040] Figure 7 Is a three-dimensional schematic diagram of the turntable and the screw feeding station of an embodiment of the present invention.

[0041] Figure 8 Is a structural schematic diagram at the screw feeding station of an embodiment of the present invention.

[0042] Figure 9 Schematic perspective view of the screw conveying assembly according to an embodiment of the present invention Figure 1 .

[0043] Figure 10 Schematic perspective view of the screw conveying assembly according to an embodiment of the present invention Figure 2 .

[0044] Figure 11 Schematic perspective view of the screw flipping mechanism according to an embodiment of the present invention.

[0045] Figure 12 Schematic perspective view of the screw feeding assembly according to an embodiment of the present invention.

[0046] Figure 13 Schematic perspective view of the turntable, screw discharging assembly and screw pressing station according to an embodiment of the present invention.

[0047] Figure 14 Partial initial state diagram of the foam roll according to an embodiment of the present invention.

[0048] Figure 15 Effect diagram after the assembly of the screw and the foam gasket according to an embodiment of the present invention. Detailed implementation manners

[0049] As Figures 1 - 15 shown, an automatic assembly device for automotive screw foam gaskets includes a frame 1 and a turntable 2 that rotates intermittently on the frame 1. There are four screw positioning seats 21 arranged equidistantly around the center of the turntable 2 on the turntable 2. Multiple positioning holes 211 for accommodating screw A are provided on the screw positioning seats 21. In some embodiments, as Figure 15 shown, screw A is set as a double-headed screw for mounting the automotive luggage rack bracket to the roof. Both ends of screw A have thread portions A1, and there is a frustum-shaped washer fitting portion A2 in the middle. A square screw head A3 is provided at the thread portion A1 at one end. In this way, the washer fitting portion A2 faces the screw head A3, and a circular plane A21 for the foam gasket B to fit and abut can be configured. The other side of the washer fitting portion A2 forms a conical inclined surface A22 with an outer diameter gradually converging towards the thread portion A1. In this way, the foam gasket B can stably fit on the surface of the circular plane A21, realizing shock absorption and waterproofing for the threaded connection surface between the roof and the luggage rack; as Figures 1 - 3 shown, the frame 1 is successively provided with a screw feeding station I, a screw pressing station II, a screw sleeving washer station III and a screw discharging station IV along the rotation direction of the turntable 2. The screw positioning seats 21 intermittently stay in the screw feeding station I, the screw pressing station II, the screw sleeving washer station III and the screw discharging station IV in sequence with the intermittent operation of the turntable 2.

[0050] As Figures 1 - 3 , Figure 5 , Figures 7 - 12As shown, at the screw feeding station I, there is a screw conveying assembly 3 for conveying screw A, a screw feeding assembly 4 for sending multiple screws A on the screw conveying assembly 3 to the screw positioning seat 21, and a screw flipping mechanism 5 for clamping and flipping multiple screws A on the screw conveying assembly 3 by 180° for the screw feeding assembly 4 to clamp and feed.

[0051] As Figures 7 - 9As shown, the screw conveying assembly 3 includes a vibrating bowl 31, a linear vibration mechanism 32 and a screw arranging mechanism 33. The linear vibration mechanism 32 includes a linear vibrator 321, a screw conveying rack 322 and a screw screening plate 323 arranged above the linear vibrator 321. A screw screening channel 324 for linearly conveying screw A is provided between the screw conveying rack 322 and the screw screening plate 323. One end of the screw screening channel 324 communicates with the vibrating bowl 31, and the other end communicates with the screw entry hole 332. The screw arranging mechanism 33 includes an arranging partition plate 331, a screw entry hole 332 opened on the arranging partition plate 331, a staggered arranging plate 34 arranged at one end of the arranging partition plate 331 away from the linear vibration mechanism 32, and a linear driving module 35 for driving the staggered arranging plate 34 to reciprocate horizontally along the arranging partition plate 331. A plurality of horizontally arranged screw arranging grooves 341 are provided on the staggered arranging plate 34. One end of each screw arranging groove 341 facing the arranging partition plate 331 has a notch 342 that can be correspondingly communicated with the screw entry hole 332. The output end of the linear driving module 35 is connected to the staggered arranging plate 34. An entry blocking cylinder 36 is arranged at the position corresponding to the screw entry hole 332 on the arranging partition plate 331. An entry blocking plate 361 is provided at the output end of the entry blocking cylinder 36. The entry blocking cylinder 36 drives the entry blocking plate 361 to approach or move away from the screw entry hole 332, thereby blocking and releasing the screw A in the screw entry hole 32. Due to the washer fitting portions A2 at the middle positions of the screw A in the screw conveying assembly 3 being respectively a gentle circular plane A21 and a conical inclined surface portion A22, the screw screening channel 324 can stably screen and transport the screw A. It is necessary to set the circular plane A21 of the screw A to abut against the screw conveying rack 322 to avoid the shaking caused by the transportation of the inclined surface portion A22. In this way, the screw A in the vibrating bowl 31 enters the screw screening channel 324 with its circular plane A21 facing down, and then enters the screw entry hole 332 one by one. As the screw arranging grooves 341 on the staggered arranging plate 34 are correspondingly arranged one by one, the screw A enters the corresponding screw arranging grooves 341 in an orderly manner for sorting and is ready to be clamped by the screw flipping mechanism 5. At the same time, to prevent the screw A from toppling over when entering the screw arranging groove 341 from the screw entry hole 332, an anti-tipping baffle 343 is also provided on the side of the screw entry hole 332 away from the screw screening channel 324, which is convenient for the screw A to stably enter the screw arranging groove 341. At the same time, during the period when the screw arranging groove 341 is filled and waiting to be clamped, the entry blocking cylinder 36 will drive the entry blocking plate 361 to move down to block the screw entry hole 332, avoiding the problem of jamming caused by the continuous transportation of the screw A by the linear vibration mechanism 32, improving the stability of the screw A during the transportation process, and ensuring that the screw A can be sorted neatly and transferred simultaneously in multiple numbers.

[0052] As Figure 11As shown in the figure, since the subsequent screw A needs to install the foam gasket B on the screw positioning seat 21, at this time, the screws A arranged at the screw conveying assembly 3 need to be flipped before being inserted into the screw positioning seat 21 so that the circular plane A21 can face upward to facilitate the installation of the foam gasket B. Therefore, a screw flipping mechanism 5 is provided. The screw flipping mechanism 5 includes a screw flipping frame 51 arranged on one side of the staggered arrangement plate 34, a flipping lifting cylinder 52 arranged on the screw flipping frame 51, a screw rotating cylinder 53 arranged at the output end of the flipping lifting cylinder 52, and a flipping finger cylinder 54 arranged at the output end of the screw rotating cylinder 53. The flipping finger cylinder 54 is arranged directly above the staggered arrangement plate 34, and two relatively arranged screw flipping clamping plates 55 are arranged at the output end of the flipping finger cylinder 54. A cylindrical screw flipping clamping notch 551 for batch clamping the screws A is formed corresponding between the screw flipping clamping plates 55. At the same time, to increase the lifting stroke and lifting accuracy of the flipping finger cylinder 54 and facilitate the flipping of screws A with different lengths, the flipping lifting cylinder 52 controls the axial height of the flipping finger cylinder 54. While avoiding interference with the operation of the screw conveying assembly 3 and the screw feeding assembly 4, it can stably batch clamp the screws A on the screw conveying assembly 3 and then rotate them 180° through the screw rotating cylinder 53 and stay at the clamping position of the screw feeding assembly 4. At the same time, a rotating buffer seat 531 is arranged at each end of the screw rotating cylinder 53, and a rotating convex block 533 is arranged on the output shaft 532 of the screw rotating cylinder 53. When the screw rotating cylinder 53 rotates back and forth 180°, the rotating convex block 533 can successively abut against the two rotating buffer seats 531 respectively, thereby quickly realizing flipping while buffering, avoiding the deviation of the position of the screw flipping clamping plates 55, and improving the workpiece accuracy;

[0053] As Figure 12As shown in the figure, the screw feeding assembly 4 includes a screw feeding rack 41 arranged on one side of the turntable 2, a feeding transverse moving cylinder 42 arranged on the screw feeding rack 41, a feeding lifting plate 43 arranged at the output end of the feeding transverse moving cylinder 42, a feeding lifting cylinder 44 arranged on the feeding lifting plate 43, and a feeding finger cylinder 45 arranged at the output end of the feeding lifting cylinder 44. Two relatively arranged screw feeding clamping plates 46 are arranged at the output end of the feeding finger cylinder 45. Multiple screw feeding clamping notches 461 for clamping screws A are correspondingly formed between the screw feeding clamping plates 46. At the same time, to improve the lifting stroke and lifting accuracy of the feeding finger cylinder 45 and facilitate the feeding of screws A with different lengths, a feeding fine-tuning lifting cylinder 47 is also arranged at the output end of the feeding lifting cylinder 44. The feeding finger cylinder 45 is arranged at the output end of the feeding fine-tuning lifting cylinder 47. In this way, the feeding fine-tuning lifting cylinder 47 and the feeding lifting cylinder 44 control the axial height of the feeding finger cylinder 45. While avoiding interference with the operation of the screw flipping mechanism 5 and the turntable 2, it can stably clamp a batch of screws A of the screw flipping mechanism 5 and then stably insert them into the positioning holes 211 of the screw positioning seat 21 through the feeding transverse moving cylinder 42, the feeding fine-tuning lifting cylinder 47, and the feeding lifting cylinder 44 to complete the batch feeding work of the screws A. At the same time, by arranging a feeding lifting slide rail structure 471 between the feeding fine-tuning lifting cylinder 47 and the feeding lifting plate 43, the feeding finger cylinder 45 can stably lift along the axis of the feeding lifting plate 43 to avoid tilting. At the same time, the end of the positioning hole 211 is preferably set as a frustum-shaped notch adapted to the washer fitting part A2 to avoid the screw A shaking when moving in the screw positioning seat 21 and improve the accuracy and stability of the batch feeding of the screws A.

[0054] As Figures 1 - 3 , Figure 7 and Figure 13 shown, when the screw A at the screw feeding station I enters the screw positioning seat 21 of the turntable 2, it will enter the screw pressing station II to be pressed as the turntable 2 rotates, so as to prevent the screw A from loosening and falling off when the turntable 2 rotates. Among them, at the screw pressing station II, there is a screw pressing rack 11 installed on the frame 1, a screw pressing cylinder 12 arranged on the screw pressing rack 11, and a screw pressing lifting plate 13 arranged at the output end of the screw pressing cylinder 12. A plurality of hydraulic buffers 14 corresponding to the positioning holes 211 on the screw positioning seat 21 are arranged on the screw pressing lifting plate 3. The hydraulic buffers 14 are arranged directly above the turntable 2 and move axially closer to or away from the turntable 2 driven by the screw pressing cylinder 12. When the screw positioning seat 21 enters the screw pressing station II, the screw pressing cylinder 12 drives the hydraulic buffer 14 to move downward to press the screw A into the corresponding positioning hole 211. The hydraulic buffer 14 not only ensures the pressure of the screw A but also avoids the problem of damaging the screw pressing cylinder 12 caused by re-pressing when some screws A have been pressed.

[0055] As shown Figures 1 - 6 in the figure, after the screw A at the screw pressing station II is tightened, it will enter the screw sleeve washer station III along with the rotation of the turntable 2 and be sleeved with a foam gasket B. One end of the foam gasket B has adhesiveness, which is convenient for attaching to the circular plane A21 and avoids the detachment of the foam gasket B. In order to facilitate the unified transportation and supply of the foam gasket B, a manipulator 6, a foam gasket conveying assembly 7 and a foam waste discharging assembly 8 are provided at the screw sleeve washer station III. As shown Figure 4 in the figure, the foam gasket conveying assembly 7 includes a foam conveying rack 71 arranged on the frame 1, a foam roll conveying disc 72 rotatably arranged on the foam conveying rack 71 for installing the foam roll, a waste collecting reel 73 rotatably arranged on the foam conveying rack 71 for recovering the foam base paper, and a foam conveying motor 74 for driving the waste collecting reel 73 to rotate and wind. One end of the foam conveying rack 7 away from the foam roll conveying disc 72 is provided with a stripping paper board 75 and an anti-sticking board 76. A stripping paper channel 751 for the foam base paper to pass through is arranged between the anti-sticking board 76 and the stripping paper board 75. The foam conveying motor 74 is used to drive the waste collecting reel 73 to rotate and wind, and then send the foam gasket B after peeling off the foam base paper to the anti-sticking board 76. The partial state of the foam roll is as shown Figure 14 in the figure. For batch supply, the foam roll is custom-set. The foam roll will include multiple columns of foam gaskets B arranged in one row and multiple rows, the foam waste B1 covering the foam gaskets B, and a foam base paper is provided. After uncovering the foam base paper, one end of the foam gasket B will have adhesiveness, and the foam waste B1 is the waste generated during the custom processing of the foam roll and needs to be automatically removed during the foam transfer and sleeving. A traction assembly 77 is arranged between the stripping paper channel 751 and the waste collecting reel 73. The foam conveying motor 74 can drive the traction assembly 77 and the waste collecting reel 73 to work simultaneously through a belt to peel off the foam base paper. Preferably, a foam cover plate 78 is arranged above the stripping paper channel 751. A foam feeding channel is arranged between the foam cover plate 78 and the anti-sticking board 76, so that the foam gasket B and the foam waste B1 after uncovering the base paper can stably enter the surface of the anti-sticking board 76 along the foam feeding channel to be clamped by the manipulator 6. Due to the traction force of the foam conveying motor 74, when the base paper moves downward, the foam will move forward onto the Teflon anti-sticking board 76, so that the foam can be continuously and automatically supplied;

[0056] As shown Figure 4 、 Figure 6As shown, the foam waste discharge assembly 8 includes a foam waste discharge plate 81 arranged opposite to the anti-sticking plate 76, a foam waste discharge transverse displacement cylinder 82 for driving the foam waste discharge plate 81 to approach or move away from the anti-sticking plate 76, and a foam waste discharge lifting cylinder 83 for driving the foam waste discharge transverse displacement cylinder 82 to axially rise and fall. The foam waste discharge plate 81 is used to bring the foam waste B1 on the anti-sticking plate 76 away from the anti-sticking plate 76. A waste chamber 84 is provided between the foam waste discharge lifting cylinder 83 and the foam conveying rack 71. The foam waste discharge plate 81 is provided with a plurality of gasket yielding grooves 811 arranged corresponding to the foam gasket B. The bottom surface of the foam waste discharge plate 81 is provided with a plurality of waste vacuum adsorption holes 812 and waste locking pins 813. When the foam is discharged, the foam waste discharge lifting cylinder 83 drives the foam waste discharge plate 81 to move upward, and then advances to the top of the anti-sticking plate 76 through the foam waste discharge transverse displacement cylinder 82. The waste discharge lifting cylinder 83 moves down again, so that the foam waste discharge plate 81 presses the foam waste B1 at the front end, inserts the waste locking pin 813 into the foam waste B1 to press and flatten it, and vacuum absorbs the foam waste B1 through the waste vacuum adsorption hole 812. At the same time, the setting of the gasket yielding groove 811 avoids the influence on the adjacent foam gasket B and avoids the foam gasket B being taken away. At this time, the manipulator 6 drives the foam transfer fixture to insert the plug-in part 621 into the center of the front end foam gasket B, and vacuum absorbs multiple foam gaskets B in the column. The foam waste discharge transverse movement cylinder 82 retracts to drive the foam waste B1 to move backward and separate from the foam gasket B, and then takes the foam waste B1 away from the anti-sticking plate 76 and moves it to at least above the waste chamber 84. The waste vacuum adsorption hole 812 stops sucking air, and the foam waste B1 directly falls into the waste chamber 84 to complete the unified collection, recycling and waste discharge action;

[0057] like Figure 5As shown, a foam transfer jig is loaded on the manipulator 6, and the foam washer B on the foam washer conveying assembly 7 is sleeved onto a plurality of screws A in the screw sleeve washer station III through the foam transfer jig. The foam transfer jig includes a foam transfer rack 61 provided at the working end of the manipulator 6, a plurality of foam suction cylinders 62 provided on the foam transfer rack 61, and a foam pressing plate 63 provided on the foam transfer rack 61. The end of the foam suction cylinder 62 is provided with a plug-in portion 621 for inserting into the foam washer B. A stepped adsorption surface 622 is formed between the plug-in portion 621 and the surface of the cylinder body of the foam suction cylinder 62. A number of foam vacuum adsorption holes 623 are provided around the stepped adsorption surface 622. A first screw relief hole 624 is provided at the center of the plug-in portion 621. The foam pressing plate 63 is provided with a plurality of second screw relief holes 631 that correspond one by one to the positioning holes 211 on the screw positioning seat 21. When the foam waste discharging plate 81 presses the frontmost foam waste B1, the manipulator 6 will drive the foam transfer jig to insert the plug-in portion 621 into the foam washer B on the anti-adhesive plate 76. Then, after the foam waste B1 is peeled off, due to the pulling force of the foam cover plate 78 and the foam base paper on the other side of the foam washer B, after the foam waste B1 is peeled off, the foam transfer jig will suck the foam washer B through the foam vacuum adsorption holes 623 and separately take away the foam washer B in this row and sleeve it onto a plurality of screws A in the screw sleeve washer station III. Due to the setting of the first screw relief hole 624, the plug-in portion 621 will directly insert onto the screw A. After closing the foam vacuum adsorption holes 623, the sticky end of the foam washer B will fall onto the circular plane A21 of the screw A to complete the ring sleeving work. The setting of the stepped adsorption surface 622 not only ensures the limit during the clamping of the foam washer B but also gives enough installation space for the foam vacuum adsorption holes 623 to improve the adsorption force and prevent dropping. At the same time, when sleeved onto the screw A, it can pre-press the foam washer B. After the foam washer B is sleeved, the manipulator 6 drives the foam suction cylinder 62 to move upward away from the screw A, and then the second screw relief holes 631 on the foam pressing plate 63 are sleeved outside the corresponding screw A to press the periphery of the foam washer B onto the surface of the circular plane A21 to complete the assembly.

[0058] As Figures 1 - 3 , Figure 13As shown in the figure, when the screw A at the screw sleeve washer station III is assembled, it will enter the screw blanking station IV for batch blanking as the turntable 2 rotates. There is a screw blanking assembly 9 at the screw blanking station IV to send the screwed A out of the turntable 2 from the screw positioning seat 21. The screw blanking assembly 9 includes a screw blanking frame 91 arranged on one side of the turntable 2, a blanking transverse moving frame 92 arranged on the screw blanking frame 91, a blanking transverse moving cylinder 93 arranged on the blanking transverse moving frame 92, a blanking lifting cylinder 94 arranged at the output end of the blanking transverse moving cylinder 93, and a blanking finger cylinder 95 arranged at the output end of the blanking lifting cylinder 94. The output end of the blanking finger cylinder 95 is provided with two relatively arranged screw blanking clamping plates 96. A plurality of screw blanking clamping slots 961 are correspondingly formed between the screw blanking clamping plates 96. The blanking finger cylinder 95, driven by the blanking transverse moving cylinder 93 and the blanking lifting cylinder 94, sends a plurality of assembled screws A on the screw positioning seat 21 at the screw blanking station IV out of the turntable 2 in batches. To improve the stability of the blanking finger cylinder 95 during the transverse movement, there is a blanking transverse moving guide rail 921 between the blanking lifting cylinder 94 and the blanking transverse moving frame 92. At the same time, there is a blanking chute 97 on one side of the turntable 2. After the assembled screw A enters the screw blanking station IV, the blanking transverse moving cylinder 93 and the blanking lifting cylinder 94 drive the blanking finger cylinder 95 to clamp the screw A in batches and move it above the blanking chute 97, and then release the screw A to slide along the blanking chute 97 to the outside of the frame 1 to complete batch blanking and packaging.

[0059] As Figures 1 - 15 shown, the automatic assembly equipment for automotive screw foam gaskets of the present invention corresponds to 4 stations and respectively includes the following steps:

[0060] S1. Screw feeding station I

[0061] S1.1: The vibrating bowl 31 conducts directional sorting on the screw A, and the linear vibrating mechanism 32 conveys the screw A along a linear path to the notch 342 position of the staggered arrangement plate 34;

[0062] S1.2: The staggered arrangement plate 34 makes the notch 342 of the arrangement groove 341 periodically align with the linear vibrating mechanism 32 through horizontal reciprocating motion, and successively receives the screw A and arranges it in a queue in the screw arrangement groove 341 of the staggered arrangement plate 34 horizontally;

[0063] S1.3: The screw flipping mechanism 5 drives the flipping finger cylinder 54 to flip the screw A by 180° through the flipping lifting cylinder 52 and the screw rotating cylinder 53, and adjusts the posture of the screw A to adapt to the direction of the positioning hole 211;

[0064] S1.4: The feeding crosswise cylinder 42 and the feeding lifting cylinder 44 of the screw feeding assembly 4 drive the screw feeding clamping plate 46 to batch-grab the screws A in the screw flipping mechanism 5 and transfer them into the positioning holes 211 of the screw positioning seats 21 on the turntable 2.

[0065] S1.5: The turntable 2 rotates intermittently to transfer the positioning seat 21 loaded with the screws A to the next working station.

[0066] S2. Screw pressing station II

[0067] S2.1: The positioning seat 21 loaded with the screws A enters the screw pressing station II. The screw pressing cylinder 12 drives the screw pressing lifting plate 13 to press down the hydraulic buffer 14 on the head of the screw A to fix the position of the screw A and eliminate the shaking.

[0068] S2.2: The turntable 2 rotates intermittently to transfer the positioning seat 21 with the pressed screw A to the next working station.

[0069] S3. Screw sleeving washer station III

[0070] S3.1: The pressed positioning seat 21 enters the screw sleeving washer station III. Before that, the foam washer conveying assembly 7 is started. The foam roll conveying disc 72 releases the foam roll with the bottom paper. The foam conveying motor 74 drives the waste receiving reel 73 to wind up the bottom paper. After the bottom paper is peeled off through the paper peeling channel 751, the foam washer B with the foam waste B1 is laid flat on the material taking position of the anti-adhesive plate 76.

[0071] S3.2: The foam waste discharging crosswise cylinder 82 of the foam waste discharging assembly 8 moves forward. The foam waste discharging lifting cylinder 83 drives the foam waste discharging plate 81 to descend to the surface of the anti-adhesive plate 76. The waste vacuum adsorption holes 812 on the bottom surface of the foam waste discharging plate 81 start to adsorb. The waste locking needle 813 pierces into the edge of the foremost foam waste B1 to complete the fixation of the waste with the foam waste discharging crosswise cylinder 82 remaining stationary.

[0072] S3.3: The manipulator 6 drives the foam transfer jig to move above the anti-adhesive plate 76. The insertion part 621 of the foam adsorption cylinder 62 is inserted into the central hole of the foam washer B, and the foam vacuum adsorption holes 623 on the stepped adsorption surface 622 are started to adsorb the foam washer B.

[0073] S3.4: The foam waste discharging crosswise cylinder 82 drives the foam waste discharging plate 81 to horizontally move out of the area of the anti-adhesive plate 76 above the waste chamber 84. The waste vacuum adsorption holes 812 are closed, and the foam waste B1 falls into the waste chamber 84. The foam waste discharging lifting cylinder 83 raises the foam waste discharging plate 81 to reset to the initial state.

[0074] S3.5: The manipulator 6 carries the adsorbed foam gasket B and moves to the top of the screw positioning seat 21 of the turntable 2, and peels off the foam waste B1 on the other side, the foam vacuum adsorption hole 623 is closed, and the sticky side of the foam gasket B falls to the gasket fitting part A21, and is vertically pressed down to make the foam gasket B fit into the gasket fitting part A2 outside the screw A;

[0075] S3.6: After the manipulator 6 completes the ring assembly, the foam transfer fixture is moved backward, and the front foam pressing plate 63 is driven to press down along with the foam transfer frame 61, so that the second screw clearance hole 631 avoids the outer diameter of the screw A, and the foam pressing plate 63 applies uniform pressure to the circumference of the foam gasket B to make it fit tightly to the surface of the screw A, and the manipulator 6 is reset to complete the automated assembly of the foam gasket B;

[0076] S3.7: The turntable 2 rotates intermittently to transfer the positioning seat 21 loaded with the finished screw A to the next station;

[0077] S4. Screw cutting station Ⅳ

[0078] S4.1: After the positioning seat 21 loaded with the finished screw A enters the screw unloading station IV, the unloading transverse cylinder 93 and the unloading lifting cylinder 94 drive the unloading finger cylinder 95 to clamp the assembled screw A, take out the finished screw A from the positioning seat 21, and transfer it to the unloading slide 97 to slide out of the rack 1, and collect and bag it uniformly;

[0079] S4.2: The empty positioning seat 21 rotates with the turntable 2 to return to the screw loading station I and enter the next cycle;

[0080] During the whole process, the frame 1 is sequentially provided with a screw loading station I, a screw pressing station II, a screw sleeve washer station III and a screw unloading station IV along the rotation direction of the turntable 2. The screw conveying assembly realizes directional arrangement of the screws through the vibration plate 31, the direct vibration mechanism 32 and the screw arrangement mechanism 33, and realizes batch loading through the screw flipping mechanism and the screw feeding assembly. The screw pressing station II is used to press the multiple screws A after loading. The manipulator 6 of the screw sleeve washer station III is equipped with a foam transfer fixture to accurately grasp the foam washer B and sleeve it on the surface of the screw A, and cooperate with the foam pressing plate 63 to enhance the fit. The foam washer conveying assembly 7 realizes continuous feeding through the bottom paper peeling and the anti-sticking plate 76 feeding. The foam waste discharge assembly 8 simultaneously removes the waste. The screw unloading assembly 9 removes the finished screws A in batches, realizing the fully automatic assembly of the screw A and the foam washer B, which significantly improves the efficiency and yield rate, effectively prevents the foam tearing and viscosity failure caused by manual operation, and meets the large-scale production needs of automotive waterproof and shock-absorbing screws.

Claims

1. An automatic assembly equipment for automotive screw foam washers, comprising a frame, and a turntable arranged on the frame and rotating intermittently, the turntable is provided with a plurality of screw positioning seats arranged at equal intervals, the screw positioning seats are provided with a plurality of positioning holes for receiving screws, characterized in that: The frame is provided with a screw loading station, a screw sleeve washer station and a screw unloading station in sequence along the rotation direction of the turntable, the screw positioning seat is intermittently stopped in the screw loading station, the screw sleeve washer station and the screw unloading station in sequence, the screw loading station is provided with a screw conveying assembly for conveying screws and a screw loading assembly for conveying one or more screws on the screw conveying assembly to the screw positioning seat, the screw sleeve washer station is provided with a manipulator and a foam washer conveying assembly, the manipulator is loaded with a foam transfer jig, and the foam washer on the foam washer conveying assembly is set on the screw in the screw sleeve washer station through the foam transfer jig, the A screw unloading assembly is provided at the screw unloading station for sending the screws after the ring is sent out of the turntable from the screw positioning seat. The foam transfer jig includes a foam transfer frame arranged at the working end of the manipulator, a plurality of foam adsorption cylinders arranged on the foam transfer frame, and a foam pressing plate arranged on the foam transfer frame. The end of the foam adsorption cylinder is provided with a plug-in portion for inserting into the foam gasket, and a step adsorption surface is formed between the plug-in portion and the foam adsorption cylinder. A plurality of foam vacuum adsorption holes are arranged around the step adsorption surface. A first screw clearance hole is provided in the center of the plug-in portion, and a plurality of second screw clearance holes corresponding to the positioning holes on the screw positioning seat are provided on the foam pressing plate.

2. The automatic assembly equipment for automobile screw foam washers according to claim 1, characterized in that: The foam gasket conveying assembly includes a foam conveying rack arranged on a frame, a foam roll conveying disk rotatably arranged on the foam conveying rack for mounting a foam roll, a waste collection reel rotatably arranged on the foam conveying rack for recycling foam base paper, and a foam conveying motor driving the waste collection reel to rotate and rewind. A stripping paper board and an anti-sticking plate are provided at one end of the foam conveying rack away from the foam roll conveying disk, a stripping passage for the foam base paper to pass through is provided between the anti-sticking plate and the stripping paper board, and the foam conveying motor is used to drive the waste collection reel to rotate and rewind, and then deliver the foam gasket after the foam base paper is peeled off to the anti-sticking plate.

3. The automatic assembly equipment for automobile screw foam washers according to claim 2 is characterized in that: A foam waste discharge assembly is provided on one side of the frame corresponding to the foam gasket conveying assembly, and the foam waste discharge assembly includes a foam waste discharge plate arranged opposite to the anti-sticking plate, a foam waste discharge transverse movement cylinder driving the foam waste discharge plate to approach or move away from the anti-sticking plate, and a foam waste discharge lifting cylinder driving the foam waste discharge transverse movement cylinder to axially lift and lower the foam waste discharge plate, and the foam waste discharge plate is used to bring the foam waste on the anti-sticking plate away from the foam gasket conveying assembly.

4. The automatic assembly equipment for automobile screw foam washers according to claim 3 is characterized by: The foam waste discharge assembly also includes a waste chamber arranged between the foam waste discharge lifting cylinder and the foam conveying rack, the foam waste discharge plate is provided with a plurality of gasket yielding grooves corresponding to the foam gaskets, and the bottom surface of the foam waste discharge plate is provided with a plurality of waste vacuum adsorption holes and waste locking needles.

5. The automatic assembly equipment for automobile screw foam washers according to any one of claims 1 to 4, characterized in that: The screw conveying assembly includes a vibration plate, a direct vibration mechanism and a screw arrangement mechanism. The screw arrangement mechanism includes an arrangement partition, a screw entry hole opened on the arrangement partition, an offset arrangement plate arranged at one end of the arrangement partition away from the direct vibration mechanism, and an arrangement drive mechanism for driving the offset arrangement plate to slide back and forth horizontally along the arrangement partition. The offset arrangement plate is provided with a plurality of transversely arranged screw arrangement grooves, and the ends of the screw arrangement grooves facing the arrangement partition have notches that can be connected to the screw entry holes. One end of the direct vibration mechanism is connected to the vibration plate, and the other end is connected to the screw entry hole, and the screws screened in the vibration plate are sent one by one to the offset arrangement plate through the screw entry holes.

6. An automatic assembly equipment for automotive screw foam washers according to claim 5, characterized in that: The arrangement drive mechanism is a linear drive module, the output end of which is connected to the offset arrangement plate, and an entry blocking cylinder is provided at the arrangement partition corresponding to the screw entry hole, and an entry blocking plate is provided at the output end of the entry blocking cylinder. The entry blocking cylinder drives the entry blocking plate to approach or move away from the screw entry hole, thereby blocking and releasing the screw at the screw entry hole.

7. An automatic assembly equipment for automotive screw foam washers according to claim 6, characterized in that: The screw feeding assembly includes a screw feeding rack arranged on one side of the turntable, a feeding transverse movement cylinder arranged on the screw feeding rack, a feeding lifting plate arranged at the output end of the feeding transverse movement cylinder, a feeding lifting cylinder arranged on the feeding lifting plate, and a feeding finger cylinder arranged at the output end of the feeding lifting cylinder. The output end of the feeding finger cylinder is provided with two relatively arranged screw feeding clamps, and screw feeding clamping grooves are correspondingly formed between the screw feeding clamps. The feeding finger cylinder is driven by the feeding transverse movement cylinder and the feeding lifting cylinder to synchronously transfer multiple screws on the offset arrangement plate to the screw positioning seat.

8. An automatic assembly equipment for automotive screw foam washers according to claim 7, characterized in that: The direct vibration mechanism includes a linear vibrator and a screw conveying rack and a screw screening plate arranged above the linear vibrator, a screw screening channel for linearly conveying screws is provided between the screw conveying rack and the screw screening plate, one end of the screw screening channel is connected with the vibration disk, and the other end is connected with the screw entry hole, a screw turning mechanism is provided between the screw feeding assembly and the staggered arrangement plate, which clamps and turns multiple screws on the staggered arrangement plate and then provides them for the screw feeding assembly to clamp and feed, the screw turning mechanism includes a screw turning frame arranged on one side of the staggered arrangement plate, a turning and lifting cylinder arranged on the screw turning frame, a screw rotating cylinder arranged at the output end of the turning and lifting cylinder, and a turning finger cylinder arranged at the output end of the screw rotating cylinder, the turning finger cylinder is arranged above the staggered arrangement plate, and the output end of the turning finger cylinder is provided with two relatively arranged screw turning clamps, and screw turning clamping notches are correspondingly formed between the screw turning clamps.

9. An automatic assembly equipment for automotive screw foam washers according to any one of claims 1 to 4, characterized in that: The frame is also provided with a screw pressing station between the screw feeding station and the screw sleeve washer station along the rotation direction of the turntable, the turntable is provided with four equidistantly arranged screw positioning seats, the screw positioning seats are provided with at least two positioning holes for accommodating screws, the screw pressing station is provided with a screw pressing frame installed on the frame, a screw pressing cylinder arranged on the screw pressing frame, and a screw pressing lifting plate arranged at the output end of the screw pressing cylinder, the screw pressing lifting plate is provided with a plurality of hydraulic buffers corresponding to the positioning holes on the screw positioning seats, the hydraulic buffers are arranged just above the turntable, and are driven by the driving shaft of the screw pressing cylinder To move closer to or away from the turntable, the screw unloading assembly includes a screw unloading rack arranged on one side of the turntable, a unloading transverse moving rack arranged on the screw unloading rack, a unloading transverse moving cylinder arranged on the unloading transverse moving rack, an unloading lifting cylinder arranged at the output end of the unloading transverse moving cylinder, and a unloading finger cylinder arranged at the output end of the unloading lifting cylinder. The output end of the unloading finger cylinder is provided with two relatively arranged screw unloading clamping plates, and a plurality of screw unloading clamping grooves are correspondingly formed between the screw unloading clamping plates. The unloading finger cylinder is driven by the unloading transverse moving cylinder and the unloading lifting cylinder to send a plurality of screws on the screw positioning seat in the screw unloading station out of the turntable in the same batch.

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