Screw gasket sleeving device

Abstract

The utility model relates to the technical field of fastener machining, in particular to a screw and gasket sleeving device which comprises a gasket sleeving mechanism, a screw feeding mechanism and at least two gasket feeding mechanisms, and the screw feeding mechanism and the gasket feeding mechanisms are dispersedly arranged outside the gasket sleeving mechanism. The gasket sleeving device has the effects that the problem that the gasket sleeving device can only sleeve the screw with one gasket at a time is solved, and the assembling efficiency of the fastener is improved.

Description

Technical Field

[0001] This application relates to the technical field of fastener processing, and in particular to a screw washer sleeve device. Background Technology

[0002] Fasteners are essential components in the field of mechanical manufacturing and assembly, used to secure the connection of two or more parts. A typical fastener usually consists of a combination of a screw / bolt and a washer, where the washer is fitted onto the shank of the screw to increase the contact area, distribute pressure, prevent thread wear, and prevent loosening.

[0003] In related technologies, automated devices for screw-wafer assembly mainly adopt a single-wafer assembly mode. The equipment uses a vibratory feeder or conveyor belt to transport the washers one by one to the designated position, and then uses a robotic arm or flipping mechanism to align and fit the screw with the washer.

[0004] Regarding the aforementioned technologies, current equipment is limited to processing only one gasket at a time. A single operation can only complete the installation of one gasket. When multiple gaskets need to be stacked, such as a combination of anti-loosening gaskets and flat gaskets, the installation process must be repeated multiple times, significantly increasing process time and equipment energy consumption. Utility Model Content

[0005] In order to improve the assembly efficiency of fasteners by improving the problem that the washer fitting device can only fit one washer onto the screw at a time, this application provides a screw washer fitting device.

[0006] The screw washer sleeve device provided in this application adopts the following technical solution:

[0007] A screw washer fitting device includes a washer fitting mechanism, a screw feeding mechanism, and at least two washer feeding mechanisms, wherein the screw feeding mechanism and each of the washer feeding mechanisms are distributed outside the washer fitting mechanism.

[0008] The gasket mounting mechanism includes a screw limiting assembly that cooperates with the screw feeding mechanism and is used to fix the screw, a gasket receiving assembly that cooperates with each of the gasket feeding mechanisms and is used to receive the gasket, and a central drive seat for installing and driving each assembly.

[0009] The screw limiting assembly is circumferentially arranged and installed on the outer wall of the central drive seat and located at the upper part of the central drive seat. The central drive seat has an upper drive ring circumferentially arranged and rotatably connected to the outer wall, which cooperates with the screw limiting assembly. The gasket receiving assembly is circumferentially arranged and installed on the outer wall of the central drive seat and located at the lower part of the central drive seat. The central drive seat has a lower drive ring circumferentially arranged and rotatably connected to the outer wall, which cooperates with the gasket receiving assembly. Both the upper drive ring and the lower drive ring are driven by the central drive seat to rotate synchronously. The screw limiting assembly has multiple screw fixing positions, and the gasket receiving assembly has multiple gasket receiving positions corresponding to the upper and lower screw fixing positions.

[0010] The central drive seat has an annular lifting step on its outer peripheral wall near the lower part for cooperating with the gasket receiving assembly, and the top surface of the annular lifting step abuts against the gasket receiving assembly.

[0011] By adopting the above technical solution, multiple gasket feeding mechanisms can simultaneously feed multiple gaskets to the gasket setting mechanism, enabling the setting of multiple gaskets in one go. This solves the problem of existing technologies that can only set one gasket at a time, significantly improving assembly efficiency. The screw limiting assembly has multiple screw fixing positions, and the gasket receiving assembly has corresponding gasket receiving positions. Combined with the synchronous rotation of the central drive seat and the upper and lower drive rings, the precise matching of multiple gaskets with multiple screws is achieved, improving setting accuracy. The annular lifting step facilitates cooperation with the gasket receiving assembly, ensuring stable operation of the gasket receiving assembly during its rise and fall. This, in conjunction with the screw limiting assembly, ensures the stability and reliability of the entire setting process.

[0012] Furthermore, the screw feeding mechanism includes a first vibratory plate and a screw conveying track disposed between the first vibratory plate and the screw limiting assembly. The screw conveying track is provided with a feeding chute along its length for the screw to move in a vertical posture.

[0013] The screw limiting assembly includes a screw limiting chuck for cooperating with the screw feeding mechanism and a plurality of limiting pins for abutting against the top side of the screw head. The screw limiting chuck is circumferentially arranged at its edge and has a plurality of U-shaped locking grooves for screws to be inserted. The end of the screw conveying track faces the screw limiting chuck and the feeding chute is aligned with the U-shaped locking grooves.

[0014] By adopting the above technical solution, the first vibratory feeder works in conjunction with the screw conveying track to transport screws in an orderly manner, ensuring a stable screw supply and improving feeding efficiency. The feeding chute allows the screws to move vertically, ensuring that the screws accurately enter the U-shaped locking groove, which facilitates subsequent fitting operations. The U-shaped locking groove of the screw limiting chuck can firmly hold the screw, and together with the limiting pin abutting against the top side of the screw head, it effectively prevents the screw from shaking or shifting, ensuring the accuracy of the screw position, thereby improving the precision and stability of screw and washer fitting and reducing the assembly error rate.

[0015] Furthermore, each of the limiting pins is provided in a corresponding manner to each of the U-shaped snap-fit ​​grooves. The central drive seat is provided with a limiting pin mounting ring on its outer peripheral wall and is rotatably connected to allow each of the limiting pins to pass through vertically and slide. Each of the limiting pins is fitted with and fixedly connected to a limiting washer on its outer wall for abutting against the top side of the limiting pin mounting ring.

[0016] The limiting pin mounting ring is located between the upper drive ring and the screw limiting chuck. Each limiting pin is circumferentially and equally spaced on the limiting pin mounting ring. The distance between the bottom end of each limiting pin and the screw limiting chuck is greater than or equal to the thickness of the screw head.

[0017] The end of each limiting pin away from the screw limiting chuck passes through the upper drive ring and is slidably connected to the upper drive ring.

[0018] By adopting the above technical solution, the limiting pins and U-shaped retaining grooves correspond one-to-one, accurately positioning the screws, preventing them from shifting, and ensuring accurate placement. The limiting pin mounting ring allows the limiting pins to slide vertically, and in conjunction with the limiting washer, the height of the limiting pins can be flexibly adjusted to accommodate screw heads of different thicknesses, enhancing the versatility of the device. The limiting pin mounting ring is located between the upper drive ring and the screw limiting chuck, and is slidably connected to the upper drive ring, facilitating the movement of the limiting pins by driving the upper drive ring. This enables stable limiting and release of the screws by the limiting pins, ensuring stable screw position during placement and improving assembly efficiency and quality.

[0019] Furthermore, the upper drive ring is provided with a plurality of upper roller assemblies on its top side for corresponding one-to-one with each of the limiting pins. The upper roller assembly includes a connecting sleeve connected to the upper drive ring and an upper roller rotatably connected to the connecting sleeve and used to cooperate with the upper part of the central drive seat. Each connecting sleeve is vertically inserted and fixedly connected to the top side of the upper drive ring. The end of the limiting pin passes through the upper drive ring and extends into the connecting sleeve.

[0020] The top side of the central drive seat is provided with a mating step near the edge, which is rolled to connect with each of the upper rollers.

[0021] By adopting the above technical solution, the upper roller in the upper roller assembly is connected to the mating step on the upper part of the central drive seat in a rolling connection, transforming sliding friction into rolling friction, reducing the resistance when the upper drive ring rotates, and making the drive smoother. The connecting sleeve is vertically inserted and fixedly connected to the top side of the upper drive ring, and the end of the limiting pin extends into the connecting sleeve to ensure the stability of the connection between the limiting pin and the upper drive ring, so that the upper drive ring can reliably drive the limiting pin to move when rotating, ensuring precise and stable limiting operation of the screw.

[0022] Furthermore, a damping spring is sleeved on the outside of the limiting pin, the damping spring abuts between the limiting washer and the upper drive ring, and the limiting pin has an arc-shaped guide surface at its bottom end for mating with the screw head.

[0023] By adopting the above technical solution, the damping spring abuts against the limiting washer and the upper drive ring, which can buffer the movement of the limiting pin, reduce impact and vibration, reduce component wear, and extend the service life of the device. The arc-shaped guide surface matches the screw head, which facilitates accurate contact and engagement between the bottom end of the limiting pin and the screw head. During the pressing down of the limiting pin, the screw can be guided more smoothly into the U-shaped retaining groove, improving positioning accuracy, avoiding damage to the screw or device due to collision, and ensuring the stability and reliability of the installation work.

[0024] Furthermore, the gasket feeding mechanism includes a second vibratory feeder and a gasket conveying track disposed between the second vibratory feeder and the gasket receiving assembly;

[0025] The gasket receiving assembly includes multiple vertically inserted and slidably connected push tubes to the lower drive ring, and a gasket receiving cylinder fixedly connected to the upper end of each push tube. The gasket receiving cylinder is coaxially arranged with the push tube and communicates with each other.

[0026] Each of the push tubes is circumferentially spaced on the lower drive ring, and the central axis of each gasket receiving cylinder is aligned with the lower part of each limiting pin.

[0027] By adopting the above technical solution, the second vibratory feeder, in conjunction with the gasket conveying track, can orderly convey gaskets to the gasket receiving assembly, ensuring a stable gasket supply and improving feeding efficiency. The push tube is vertically inserted and slidably connected to the lower drive ring, allowing for precise lifting and lowering under drive, facilitating accurate pushing of the gasket to the corresponding position with the screw for stable installation. The gasket receiving cylinder is coaxially arranged and connected to the push tube, with a reasonable structure that stably supports the gasket, preventing it from falling or shifting, and ensuring accurate gasket positioning. The push tubes and gasket receiving cylinders are circumferentially spaced and aligned with the bottom of the limiting pin, ensuring that each screw can be fitted with the corresponding gasket, improving installation accuracy and efficiency, and guaranteeing assembly quality.

[0028] Furthermore, the gasket conveying track has a gasket groove along its length for the gasket to slide, and the gasket conveying track has a discharge through hole at its bottom position that communicates with the gasket groove and allows the gasket to fall. The discharge through hole is aligned with the upper position of the gasket receiving cylinder.

[0029] By adopting the above technical solution, the gasket chute provides a stable sliding channel for the gaskets, ensuring orderly gasket delivery, avoiding stacking or jamming, and improving feeding smoothness. The discharge through-hole connects to the gasket chute and aligns with the top of the gasket receiving cylinder, allowing the gasket to fall accurately into the receiving cylinder, achieving fixed-point discharge and improving the accuracy of the fitting position. The gasket conveying track facilitates control over the timing and quantity of gasket descent, and in conjunction with the action of the lower drive ring, ensures that the gaskets are accurately fitted onto the screws as needed, improving assembly efficiency and accuracy, reducing manual intervention, and lowering production costs.

[0030] Furthermore, each of the push tubes is provided with a lower roller assembly at the end away from the gasket receiving cylinder for cooperating with the annular lifting step.

[0031] By adopting the above technical solution, the lower roller assembly cooperates with the annular lifting step. When the central drive seat drives the lower drive ring to rotate, the annular lifting step pushes the lower roller assembly, enabling the pusher tube to achieve stable lifting and lowering, ensuring accurate and reliable shim pushing action. The roller structure converts sliding friction into rolling friction, reducing motion resistance, minimizing component wear, and extending the device's service life. It also makes the lifting and lowering process of the pusher tube smoother, improving work efficiency. The assembly method is simple and compact, easy to assemble and maintain, ensuring synchronous movement of each pusher tube and ensuring that multiple shims can be accurately fitted onto their corresponding screws simultaneously, improving overall assembly quality and stability.

[0032] Furthermore, the lower roller assembly includes a roller seat fixedly connected to the lower end of the push tube and a lower roller rotatably connected to the roller seat.

[0033] By adopting the above technical solution, the roller seat fixes the lower roller to the lower end of the push tube, ensuring connection stability and enabling the lower roller to accurately transmit the force of the annular lifting step, thus ensuring precise execution of the lifting and lowering action of the push tube. The rotatably connected lower roller rolls flexibly, transforming the sliding friction between the lower roller and the annular lifting step into rolling friction, reducing motion resistance and making the lifting and lowering of the push tube smoother. The structure is simple and compact, easy to install and adjust, adaptable to the size requirements of different working conditions, and the rollers are easy to replace and maintain, reducing equipment maintenance costs and improving the overall reliability and service life of the device.

[0034] Furthermore, the gasket fitting mechanism is externally provided with a feeding mechanism, which has a feeding lever, the end of which is aligned with the U-shaped locking groove on the lower side of the screw limiter.

[0035] By adopting the above technical solution, the feeding lever is aligned with the U-shaped retaining groove on the lower side of the screw limiter, allowing for precise action on screws with pre-installed washers. The lever disengages the screw from the retaining groove, achieving efficient feeding. The structure is simple and direct, utilizing the mechanical action of the lever to complete feeding without the need for complex devices, thus reducing equipment costs and the risk of failure. It avoids manual intervention during feeding, minimizing errors and damage caused by human factors, and ensuring consistent and stable product quality.

[0036] In summary, this application includes at least one of the following beneficial technical effects:

[0037] 1. Multiple gasket feeding mechanisms can simultaneously feed multiple gaskets, enabling multiple gaskets to be fitted at once, solving the problem that existing technologies can only fit one gasket at a time. The cooperation of each mechanism can ensure that the screw and gasket are accurately matched and fitted, reducing process time and improving overall assembly efficiency.

[0038] 2. The screw is precisely positioned by the limit pin and the U-shaped locking groove. The upper drive ring, lower drive ring and roller assembly and other structures ensure the stable operation and synchronous action of each component, so that the gasket and screw are accurately fitted, avoiding collision damage and ensuring stable and reliable assembly quality.

[0039] 3. The limit pin mounting ring, in conjunction with the limit washer, can accommodate screw heads of different thicknesses, enhancing the versatility of the device. The design of the shock-absorbing spring, roller assembly, etc., reduces impact and vibration, reduces component wear, extends the service life of the device, and makes the operation process smoother and more stable. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the overall structure of a screw washer sleeve device according to an embodiment of this application. Figure 1 .

[0041] Figure 2 This is a schematic diagram of the overall structure of a screw washer sleeve device according to an embodiment of this application. Figure 2 .

[0042] Figure 3 yes Figure 1 Enlarged schematic diagram of the screw conveying track and feeding chute in section A.

[0043] Figure 4 yes Figure 1 Enlarged schematic diagram of the structure of the gasket conveying track, gasket chute and unloading through hole in section B.

[0044] Figure 5 This is a schematic diagram of the overall structure of a screw washer sleeve device according to an embodiment of this application. Figure 3 .

[0045] Figure 6 yes Figure 5 Enlarged schematic diagram of the material feeding lever and material guide chute in section C.

[0046] Figure 7 This is a schematic diagram of the overall structure of the gasket sleeve mechanism in the embodiments of this application. Figure 1 .

[0047] Figure 8 This is a schematic diagram of the overall structure of the gasket sleeve mechanism in the embodiments of this application. Figure 2 .

[0048] Explanation of reference numerals in the attached drawings: 1. Gasket sleeve mechanism; 11. Screw limiting assembly; 111. Screw limiting chuck; 1111. U-shaped locking groove; 112. Limiting pin; 1121. Limiting washer; 1122. Shock-absorbing spring; 1123. Arc-shaped guide surface; 113. Limiting pin mounting ring; 114. Upper roller assembly; 1141. Connecting sleeve; 1142. Upper roller; 12. Gasket receiving assembly; 121. Push tube; 122. Gasket receiving cylinder; 123. Lower roller assembly; 1231. Roller seat; 1232. Lower roller... 1. Wheel; 13. Center drive seat; 131. Upper drive ring; 132. Lower drive ring; 133. Annular lifting step; 134. Matching step; 2. Screw feeding mechanism; 21. First vibratory plate; 22. Screw conveying track; 221. Feeding chute; 3. Gasket feeding mechanism; 31. Second vibratory plate; 32. Gasket conveying track; 321. Gasket chute; 322. Discharge through hole; 4. Discharge mechanism; 41. Discharge lever; 42. Fixed stand; 43. Material holding trough; 44. Discharge guide chute; 45. Vertical support rod. Detailed Implementation

[0049] To make the purpose, technical solution, and advantages of this application clearer, the following description is provided in conjunction with the appendix. Figure 1-8 The present application will be further described in detail with reference to the embodiments.

[0050] This application discloses a screw washer fitting device. (Refer to...) Figure 1 and Figure 2 The screw washer fitting device includes a washer fitting mechanism 1, a screw feeding mechanism 2, a washer feeding mechanism 3, and a unloading mechanism 4. The screw feeding mechanism 2 is used to feed screws, the washer feeding mechanism 3 is used to feed washers, the washer fitting mechanism 1 is used to fit the washer onto the outside of the screw, and the unloading mechanism 4 is used to unload the finished screw with the washer fitted on the washer fitting mechanism 1.

[0051] The number of gasket feeding mechanisms 3 can be multiple, thereby conveying various types of gaskets to the gasket setting mechanism 1. In this embodiment, there are two gasket feeding mechanisms 3, which are used to convey two different types of gaskets to the gasket setting mechanism 1 respectively. The screw feeding mechanism 2, each gasket feeding mechanism 3, and the unloading mechanism 4 are distributed around the gasket setting mechanism 1.

[0052] Combination Figure 3 and Figure 4 The screw feeding mechanism 2 includes a first vibratory plate 21 and a screw conveying track 22 disposed between the first vibratory plate 21 and the gasket sleeve mechanism 1. The screw conveying track 22 has a feeding groove 221 along its length for the screw to move in a vertical posture. The gasket feeding mechanism 3 includes a second vibratory plate 31 and a gasket conveying track 32 disposed between the second vibratory plate 31 and the gasket sleeve mechanism 1. The gasket conveying track 32 has a gasket groove 321 along its length for the gasket to slide. The gasket conveying track 32 has a discharge through hole 322 at its bottom position that communicates with the gasket groove 321 and allows the gasket to fall.

[0053] Reference Figure 5 and Figure 6 The feeding mechanism 4 includes a feeding lever 41 for peeling off the finished screws from the gasket sleeve mechanism 1, a fixed stand 42 for mounting the feeding lever 41, a material receiving trough 43 for receiving the finished screws, and a dropping guide chute 44 located below the feeding lever 41 and aligned above the material receiving trough 43. The dropping guide chute 44 is provided with a vertical support rod 45 for fixing to the ground below.

[0054] Reference Figure 7 and Figure 8 The gasket mounting mechanism 1 includes a screw limiting assembly 11 that cooperates with the screw conveying track 22 and is used to fix the screw, a gasket receiving assembly 12 that cooperates with each gasket conveying track 32 and is used to receive the gasket, and a central drive seat 13 for installing and driving each assembly.

[0055] A screw limiting assembly 11 is circumferentially arranged and installed on the outer wall of the central drive seat 13 and located at the upper part of the central drive seat 13. An upper drive ring 131 that mates with the screw limiting assembly 11 is circumferentially arranged and rotatably connected to the outer wall of the central drive seat 13. A gasket receiving assembly 12 is circumferentially arranged and installed on the outer wall of the central drive seat 13 and located at the lower part of the central drive seat 13. A lower drive ring 132 that mates with the gasket receiving assembly 12 is circumferentially arranged and rotatably connected to the outer wall of the central drive seat 13.

[0056] The central drive base 13 has a motor (not shown in the attached figure) inside for cooperating with the upper drive ring 131 and the lower drive ring 132. Both the upper drive ring 131 and the lower drive ring 132 are driven by the central drive base 13 to rotate synchronously. The central drive base 13 has an annular lifting step 133 on its outer peripheral wall near the lower part for cooperating with the gasket receiving assembly 12. The top surface of the annular lifting step 133 abuts against the gasket receiving assembly 12.

[0057] The screw limiting assembly 11 includes a screw limiting chuck 111 for cooperating with the screw conveying track 22 and a plurality of limiting pins 112 for abutting against the top side of the screw head. The screw limiting chuck 111 is circumferentially arranged at its edge and has a plurality of U-shaped locking grooves 1111 for screws to be inserted. Each U-shaped locking groove 1111 forms a screw fixing station of the screw limiting assembly 11. The end of the screw conveying track 22 faces the screw limiting chuck 111 and the feeding chute 221 is aligned with the U-shaped locking groove 1111.

[0058] Each limiting pin 112 corresponds to each U-shaped retaining groove 1111. The central drive seat 13 is coaxially sleeved on the outer peripheral wall and rotatably connected to the limiting pin 112 mounting ring. The limiting pin 112 mounting ring is located between the upper drive ring 131 and the screw limiting chuck 111. Each limiting pin 112 is vertically inserted through the limiting pin 112 mounting ring and is slidably connected to the limiting pin 112 mounting ring. Each limiting pin 112 is circumferentially spaced at equal intervals on the limiting pin 112 mounting ring. The end of each limiting pin 112 away from the screw limiting chuck 111 passes through the upper drive ring 131 and is slidably connected to the upper drive ring 131.

[0059] Each limiting pin 112 is fitted with and fixedly connected to a limiting washer 1121 on its outer wall, which abuts against the top side of the mounting ring of the limiting pin 112. The distance between the bottom end of each limiting pin 112 and the screw limiting chuck 111 is greater than or equal to the thickness of the screw head. A shock-absorbing spring 1122 is fitted on the outside of the limiting pin 112, which abuts against the limiting washer 1121 and the upper drive ring 131. The limiting pin 112 has an arc-shaped guide surface 1123 at its bottom end for mating with the screw head.

[0060] The upper drive ring 131 has a plurality of upper roller assemblies 114 on its top side, each corresponding to a limit pin 112. Each upper roller assembly 114 includes a connecting sleeve 1141 connected to the upper drive ring 131 and upper rollers 1142 rotatably connected to the connecting sleeve 1141 and used to engage with the upper part of the central drive seat 13. Each connecting sleeve 1141 is vertically inserted and fixedly connected to the top side of the upper drive ring 131. The end of each limit pin 112 passes through the upper drive ring 131 and extends into the connecting sleeve 1141. The top side of the central drive seat 13 has a mating step 134 near its edge, which rolls between the upper rollers 1142.

[0061] The gasket receiving assembly 12 includes multiple vertically inserted and slidably connected push tubes 121 to the lower drive ring 132, and gasket receiving cylinders 122 fixedly connected to the upper ends of each push tube 121. The gasket receiving cylinders 122 are coaxially arranged with and communicate with the push tubes 121, and the depth of the gasket receiving cylinders 122 is at least equal to the thickness of two gaskets. The push tubes 121 are circumferentially spaced on the lower drive ring 132, and the central axis of each gasket receiving cylinder 122 is aligned with the lower part of each limiting pin 112. The gasket receiving cylinders 122 form gasket receiving positions for cooperating with the gasket feeding mechanism 3. Each gasket receiving position corresponds vertically to each screw fixing position, and the discharge through hole 322 of the gasket conveying track 32 is aligned with the upper part of the gasket receiving cylinder 122.

[0062] Each push tube 121 is provided with a lower roller assembly 123 at the end away from the gasket receiving cylinder 122 for cooperating with the annular lifting step 133. The lower roller assembly 123 includes a roller seat 1231 fixedly connected to the lower end of the push tube 121 and a lower roller 1232 rotatably connected to the roller seat 1231. The lower roller 1232 is in rolling connection with the annular lifting step 133.

[0063] The implementation principle of the screw washer sleeve device in this application embodiment is as follows: The first vibratory plate 21 of the screw feeding mechanism 2 transports the screw to the screw conveying track 22. The screw slides vertically in the feeding groove 221 of the track and reaches the U-shaped snap-fit ​​groove 1111 corresponding to the screw limiting component 11. At the same time, the second vibratory plates 31 of the two washer feeding mechanisms 3 transport different washers to the corresponding washer conveying tracks 32. The washers slide along the washer groove 321 and fall into the washer receiving cylinder 122 through the discharge hole 322.

[0064] The motor inside the central drive seat 13 drives the upper drive ring 131 and the lower drive ring 132 to rotate synchronously. The rotation rhythm of the upper drive ring 131 and the lower drive ring 132 can be coordinated with the conveying rhythm of the screw feeding mechanism 2 and the gasket feeding mechanism 3 to ensure the stability of feeding.

[0065] When the upper drive ring 131 rotates, it engages with the upper part of the center drive seat 13 via the upper roller assembly 114, causing the limiting pin 112 to slide vertically within the limiting pin 112 mounting ring. This allows the bottom end of the limiting pin 112 to extend into the U-shaped retaining groove 1111 and abut against the screw head, achieving precise positioning and fixing of the screw. When the lower drive ring 132 rotates, it engages with the lower roller assembly 123 via the annular lifting step 133, driving the push tube 121 to move vertically. When the push tube 121 rises, it pushes the gasket in the gasket receiving cylinder 122 upwards, allowing the gasket to be fitted onto the screw located above it. Afterward, the push tube 121 descends to reset, awaiting the next fitting action.

[0066] After the screw and washer are fitted together, the feeding lever 41 of the feeding mechanism 4 is positioned on the fixed frame 42. At each station, the finished screws with washer fitted together sequentially strike the feeding lever 41, thus disengaging from the U-shaped retaining groove 1111 of the screw limiting chuck 111. The finished screws then fall into the material holding trough 43 via the feeding guide chute 44, completing the feeding process. The entire device achieves efficient and precise fitting of screws and washers and finished product feeding through the coordinated operation of various mechanisms.

[0067] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A screw washer sleeve device, characterized in that: It includes a gasket fitting mechanism (1), a screw feeding mechanism (2), and at least two gasket feeding mechanisms (3), wherein the screw feeding mechanism (2) and each of the gasket feeding mechanisms (3) are distributed outside the gasket fitting mechanism (1); The gasket mounting mechanism (1) includes a screw limiting assembly (11) that cooperates with the screw feeding mechanism (2) and is used to fix the screw, a gasket receiving assembly (12) that cooperates with each of the gasket feeding mechanisms (3) and is used to receive the gasket, and a central drive seat (13) for installing and driving each assembly. The screw limiting assembly (11) is circumferentially arranged and installed on the outer wall of the central drive seat (13) and located at the upper part of the central drive seat (13). The central drive seat (13) has an upper drive ring (131) that cooperates with the screw limiting assembly (11) circumferentially arranged and installed on the outer wall of the central drive seat (13) and located at the lower part of the central drive seat (13). The central drive seat (13) has a lower drive ring (132) that cooperates with the gasket receiving assembly (12) circumferentially arranged and installed on the outer wall of the central drive seat (13). The central drive seat (13) has a lower drive ring (132) that cooperates with the gasket receiving assembly (12) circumferentially arranged and rotatably connected on the outer wall. The upper drive ring (131) and the lower drive ring (132) are both driven by the central drive seat (13) to rotate synchronously. The screw limiting assembly (11) has multiple screw fixing positions, and the gasket receiving assembly (12) has multiple gasket receiving positions that correspond to the upper and lower screw fixing positions. The central drive seat (13) has an annular lifting step (133) on its outer peripheral wall near the lower part for cooperating with the gasket receiving assembly (12), and the top surface of the annular lifting step (133) abuts against the gasket receiving assembly (12).

2. The screw washer sleeve device according to claim 1, characterized in that: The screw feeding mechanism (2) includes a first vibratory plate (21) and a screw conveying track (22) disposed between the first vibratory plate (21) and the screw limiting assembly (11). The screw conveying track (22) has a feeding chute (221) along its length for the screw to move in a vertical posture. The screw limiting assembly (11) includes a screw limiting chuck (111) for cooperating with the screw feeding mechanism (2) and a plurality of limiting pins (112) for abutting against the top side of the screw head. The screw limiting chuck (111) is circumferentially arranged at the edge position and has a plurality of U-shaped locking grooves (1111) for screws to be inserted. The end of the screw conveying track (22) faces the screw limiting chuck (111) and the feeding chute (221) is aligned with the U-shaped locking grooves (1111).

3. The screw washer sleeve device according to claim 2, characterized in that: Each of the limiting pins (112) is provided in a one-to-one correspondence with each of the U-shaped snap-fit ​​grooves (1111). The central drive seat (13) is provided with a limiting pin (112) mounting ring on its outer peripheral wall for vertical insertion and sliding connection of each of the limiting pins (112). Each of the limiting pins (112) is provided with a limiting washer (1121) on its outer wall for abutting against the top side of the limiting pin (112) mounting ring. The mounting ring of the limiting pin (112) is located between the upper drive ring (131) and the screw limiting chuck (111). Each of the limiting pins (112) is circumferentially and equally spaced on the mounting ring of the limiting pin (112). The distance between the bottom end of each limiting pin (112) and the screw limiting chuck (111) is greater than or equal to the thickness of the screw head. The end of each of the limiting pins (112) away from the screw limiting chuck (111) passes through the upper drive ring (131) and is slidably connected to the upper drive ring (131).

4. The screw washer sleeve device according to claim 3, characterized in that: The upper drive ring (131) is provided with a plurality of upper roller assemblies (114) on its top side for corresponding one-to-one with each of the limiting pins (112). The upper roller assembly (114) includes a connecting sleeve (1141) connected to the upper drive ring (131) and an upper roller (1142) rotatably connected to the connecting sleeve (1141) and used to cooperate with the upper part of the central drive seat (13). Each connecting sleeve (1141) is vertically inserted and fixedly connected to the top side of the upper drive ring (131). The end of the limiting pin (112) passes through the upper drive ring (131) and extends into the connecting sleeve (1141). The top side of the central drive seat (13) is provided with a mating step (134) near the edge, which is in rolling connection with each of the upper rollers (1142).

5. A screw washer sleeve device according to claim 3, characterized in that: The limiting pin (112) is externally fitted with a damping spring (1122), which abuts against the limiting washer (1121) and the upper drive ring (131). The limiting pin (112) has an arc-shaped guide surface (1123) at its bottom end for mating with the screw head.

6. A screw washer sleeve device according to claim 2, characterized in that: The gasket feeding mechanism (3) includes a second vibratory plate (31) and a gasket conveying track (32) disposed between the second vibratory plate (31) and the gasket receiving assembly (12); The gasket receiving assembly (12) includes a pair of push tubes (121) that are vertically inserted and slidably connected to the lower drive ring (132) and a gasket receiving cylinder (122) fixedly connected to the upper end of each push tube (121). The gasket receiving cylinder (122) is coaxially arranged with the push tube (121) and communicates with each other. Each of the push tubes (121) is circumferentially and equally spaced on the lower drive ring (132), and the central axis of each of the gasket receiving cylinders (122) is aligned with the lower part of each of the limiting pins (112).

7. A screw washer sleeve device according to claim 6, characterized in that: The gasket conveying track (32) has a gasket groove (321) along its length for the gasket to slide. The gasket conveying track (32) has a discharge through hole (322) at its bottom position that communicates with the gasket groove (321) and allows the gasket to fall. The discharge through hole (322) is aligned with the upper position of the gasket receiving cylinder (122).

8. A screw washer sleeve device according to claim 7, characterized in that: Each of the push tubes (121) is provided with a lower roller assembly (123) at the end away from the gasket receiving cylinder (122) for cooperating with the annular lifting step (133).

9. A screw washer sleeve device according to claim 8, characterized in that: The lower roller assembly (123) includes a roller seat (1231) fixedly connected to the lower end of the push tube (121) and a lower roller (1232) rotatably connected to the roller seat (1231).

10. A screw washer sleeve device according to claim 2, characterized in that: The gasket fitting mechanism (1) is provided with a feeding mechanism (4) on the outside. The feeding mechanism (4) has a feeding lever (41). The end of the feeding lever (41) is aligned with the U-shaped locking groove (1111) on the lower side of the screw limit card.

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