A brass tile gasket screw quick preloading device

Abstract

The utility model discloses a brass tile pad screw quick preassembling device, it relates to contactor technical field, include: base, set in the upper panel of base top and be connected in the support block between base with upper panel, drive assembly is set in the upper panel is used for output rotation power, driven shaft can rotatably be set in base with upper panel, and with drive assembly transmission connection, the upper end of driven shaft is equipped with first rectangle groove, intermediate sleeve is set in the upper panel, the cavity is equipped in intermediate sleeve and top center position is equipped with through -hole, clutch is movably set in the intermediate sleeve, the lower extreme of clutch is equipped with with first rectangle boss of first rectangle groove adaptation, the utility model can complete brass non -magnetic small specification screw's quick preassembling without magnetic tool, and the operation is simple and easy, and the efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of contactor technology, specifically to a quick pre-installation device for brass pad screws. Background Technology

[0002] Compact DC contactors, as a commonly used circuit control element, are widely used in various electrical equipment due to their compact structure and small size. However, the internal space of a compact DC contactor is extremely limited, and the distance between the breaking and making positions of the moving and stationary contacts and the wiring screws is relatively short. This makes the choice of material for the wiring fasteners one of the key factors affecting the contactor's performance.

[0003] Currently, carbon steel contactor washer screws are widely used as wiring fasteners for DC contactors. Carbon steel has magnetic properties; during the contactor's breaking and making processes, the carbon steel contactor washer screws interfere with the arcing magnetic field generated at the contacts, altering the magnetic field distribution and accelerating contact erosion. This reduces the contactor's breaking capacity and severely impacts the DC contactor's operational stability and service life.

[0004] Therefore, some technical solutions use brass washer screws as the fasteners for the stationary contact wiring. Brass is a non-magnetic material and will not interfere with the arcing magnetic field, effectively avoiding the aforementioned magnetic field interference problems and helping to improve the performance and reliability of the DC contactor.

[0005] However, brass washer screws present new assembly challenges. Because brass is a non-magnetic material, traditional assembly tools that rely on magnetic attraction, such as magnetic screwdrivers and bits, cannot attract it. Operators cannot use magnetic tools to quickly grasp and position the screws, and must rely on manual handling for installation. Furthermore, these washer screws are relatively small, making manual handling extremely inconvenient, resulting in high difficulty and low efficiency.

[0006] To address the assembly problem of non-magnetic screws, existing technologies have provided some auxiliary tools or devices, such as screw positioning devices that use mechanical clamping to position non-magnetic screws. However, in small-batch, multi-variety production scenarios, introducing automated assembly equipment is too costly and uneconomical; while purely manual operation is inefficient due to the small screw size and inconvenience of operation, and it is difficult to ensure assembly consistency. How to solve the problem of rapid assembly of small-sized non-magnetic brass washer screws while balancing economy and practicality has become a pressing technical challenge in this field. Utility Model Content

[0007] (a) Technical problems to be solved In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a quick pre-installation device for brass tile washer screws to solve the problems mentioned in the background art.

[0008] (II) Technical Solution To achieve the above objectives, this utility model is implemented through the following technical solution: a quick pre-installation device for brass tile washer screws, comprising: A base, an upper panel disposed above the base, and a support block connecting the base and the upper panel; A drive assembly, mounted on the top plate, is used to output rotational power; A driven shaft is rotatably mounted on the base and the top plate and is connected to the drive assembly. A first rectangular groove is provided at the upper end of the driven shaft. An intermediate sleeve is disposed on the top plate, the intermediate sleeve having a cavity and a through hole at the top center position; The clutch is movably disposed within the intermediate sleeve. The lower end of the clutch is provided with a first rectangular boss that is adapted to the first rectangular groove. A first support spring is provided between the clutch and the driven shaft. The cutter head rotating seat is movably disposed within the intermediate sleeve and located above the clutch. The lower end of the cutter head rotating seat can be engaged and limited in the circumferential direction with the upper end of the clutch. An adjusting sleeve is fitted over the upper part of the intermediate sleeve and can be adjusted vertically. A square limiting opening is provided at the center of the top of the adjusting sleeve. A fixing sleeve is vertically inserted into the square limiting opening and its shape matches the square limiting opening. A second support spring is provided between the lower end of the fixing sleeve and the upper end of the intermediate sleeve. The upper end of the fixing sleeve is provided with a screw groove for accommodating brass tile washer screws and a workpiece groove for accommodating the workpiece and positioning the workpiece to prevent rotation. A through hole is provided at the center of the fixing sleeve. A screwdriver bit is movably inserted through the through hole of the intermediate sleeve and the through hole of the fixed sleeve, and the lower end of the screwdriver bit is fixedly connected to the screwdriver bit rotating seat.

[0009] Furthermore, the drive assembly includes a motor, a driving synchronous pulley, a synchronous belt, and a driven synchronous pulley. The motor is fixed to the top plate, and the output end of the motor rotates through the base and the top plate. The driving synchronous pulley is connected to the output end of the motor, the driven synchronous pulley is fixed to the driven shaft, and the synchronous belt connects the driving synchronous pulley and the driven synchronous pulley.

[0010] Furthermore, the base is provided with an annular fixing seat, the inner ring of the fixing seat is fixedly provided with a flange, the flange is provided with an internal thread, the lower part of the intermediate sleeve is provided with an external thread, the flange and the intermediate sleeve are threadedly engaged, and the intermediate sleeve is provided with a second adjusting nut for locking.

[0011] Furthermore, the upper part of the intermediate sleeve is provided with an external thread, the adjusting sleeve is provided with an internal thread, the adjusting sleeve is threadedly engaged with the intermediate sleeve, and the adjusting sleeve is provided with a first adjusting nut for locking.

[0012] Furthermore, the workpiece groove is configured as a V-shaped groove to prevent the workpiece from rotating, and the bottom center of the screw groove is configured as a circular groove.

[0013] Furthermore, the lower end of the cutter head rotating seat is provided with a second rectangular boss, and the upper end of the clutch is provided with a second rectangular groove that matches the second rectangular boss.

[0014] Furthermore, the clutch has a mounting groove on the surface opposite to the driven shaft, and the first support spring is installed in the mounting groove.

[0015] Furthermore, the driven shaft is rotatably mounted on the base and the top plate via two bearings.

[0016] (III) Beneficial Effects This utility model provides a quick pre-installation device for brass tile washer screws, which has the following advantages: 1. This utility model features a fixed sleeve with a workpiece groove and a screw groove. The screw groove accommodates the brass washer screw and mates with the screwdriver head, while the workpiece groove accommodates and positions the workpiece to prevent rotation. During assembly, the operator presses down on the workpiece, causing the fixed sleeve to move downward against the second support spring, ensuring the workpiece's stability within the workpiece groove. The workpiece then drives the brass washer screw, pushing the screwdriver head, screwdriver head rotating seat, and clutch downward against the first support spring. This causes the screwdriver head rotating seat to engage with the clutch circumferentially and the clutch to engage with the driven shaft circumferentially. The drive assembly rotates the driven shaft, transmitting the rotation to the screwdriver head to tighten the brass washer screw onto the workpiece. The entire workflow relies entirely on mechanical structures, eliminating the need for magnetic adsorption tools and solving the problem of small, non-magnetic brass screws being unable to be attracted by magnetic screwdriver bits and the inconvenience of manual handling. 2. This invention allows for the pre-installation of a single screw simply by placing it on the workpiece and pressing down. After loosening, the retaining sleeve resets under the action of the second support spring, and the clutch disengages from the driven shaft under the action of the first support spring, allowing for immediate re-operation. Compared to manual tightening of screws one by one, the assembly speed is significantly improved. Simultaneously, each positioning groove ensures that the relative position of each screw and workpiece is consistent, and the torque output of the clutch transmission is stable, avoiding thread damage or tightening torque deviation caused by uneven manual operation, thus ensuring the assembly consistency of batch products. Attached Figure Description

[0017] Figure 1This is an exploded schematic diagram of a quick pre-assembly device for brass tile pad screws according to the present invention; Figure 2 This is a front sectional view of a brass tile washer screw quick pre-assembly device according to the present invention; Figure 3 This is a partial schematic diagram of a quick pre-installation device for brass tile pad screws according to the present invention.

[0018] In the diagram: 1. Motor; 2. Driving synchronous pulley; 3. Synchronous belt; 4. Driven synchronous pulley; 5. Fixed base; 6. Flange; 7. Driven shaft; 8. Clutch; 9. First support spring; 10. Cutter head rotating seat; 11. Screwdriver head; 12. Second support spring; 13. Fixed sleeve; 14. Adjusting sleeve; 15. First adjusting nut; 16. Intermediate sleeve; 17. Second adjusting nut; 18. Base; 19. Support block; 20. Top panel; 21. Workpiece groove; 22. Screw groove; 23. Mounting groove; 24. First rectangular groove; 25. First rectangular boss; 26. Second rectangular boss; 27. Second rectangular groove; 211. Workpiece being machined; 221. Brass tile washer screw. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] The present invention will now be described in detail through specific embodiments, as follows: Figures 1 to 3 As shown, this utility model provides a quick pre-installation device for brass tile pad screws, including a base 18, an upper panel 20, a support block 19, a drive assembly, a driven shaft 7, an intermediate sleeve 16, a clutch 8, a screwdriver head rotating seat 10, an adjusting sleeve 14, a fixing sleeve 13, and a screwdriver head 11.

[0021] The base 18 serves as the mounting foundation for this device. It has a plate-like structure and is used to support and secure other components. An upper panel 20 is positioned above the base 18, and is fixedly connected to the base 18 via a support block 19. The support block 19 is vertically positioned between the base 18 and the upper panel 20, with its lower end fixedly connected to the base 18 and its upper end fixedly connected to the upper panel 20, thus creating a space between the base 18 and the upper panel 20 for accommodating transmission components.

[0022] A ring-shaped fixing seat 5 is fixedly mounted on the base 18. The fixing seat 5 is a hollow ring structure, and a flange 6 is fixedly mounted on its inner ring. The flange 6 has internal threads for threaded engagement with the lower part of the intermediate sleeve 16. The lower part of the intermediate sleeve 16 has corresponding external threads, and the flange 6 and the intermediate sleeve 16 are fixed by threaded connection. A second adjusting nut 17 is also provided on the intermediate sleeve 16. The second adjusting nut 17 is sleeved on the outside of the intermediate sleeve 16 and threadedly engaged with it. When the intermediate sleeve 16 is screwed relative to the flange 6 to a suitable height, the second adjusting nut 17 can be tightened to abut against the upper end face of the flange 6, thereby locking and positioning the intermediate sleeve 16 and preventing the intermediate sleeve 16 from loosening during operation.

[0023] The drive assembly is located on the upper panel 20 and is used to output rotational power. The drive assembly includes a motor 1, a driving synchronous pulley 2, a synchronous belt 3, and a driven synchronous pulley 4.

[0024] Motor 1 is fixedly mounted on the upper surface of the upper panel 20. The output end of motor 1 rotates from top to bottom through the upper panel 20 and extends into the receiving space between the base 18 and the upper panel 20. The driving synchronous pulley 2 is fixedly connected to the output end of motor 1 and rotates synchronously with the output end of motor 1. The driven synchronous pulley 4 is fixedly connected to the driven shaft 7 and rotates synchronously with the driven shaft 7. The synchronous belt 3 connects the driving synchronous pulley 2 and the driven synchronous pulley 4, and is used to transmit the rotational power of the driving synchronous pulley 2 to the driven synchronous pulley 4.

[0025] After the motor 1 starts, its output end drives the active synchronous pulley 2 to rotate. The active synchronous pulley 2 drives the driven synchronous pulley 4 to rotate through the synchronous belt 3. The driven synchronous pulley 4 drives the driven shaft 7 to rotate, thereby realizing the output and transmission of rotational power.

[0026] The driven shaft 7 is rotatably disposed between the base 18 and the upper panel 20. Specifically, the driven shaft 7 is rotatably connected to the base 18 and the upper panel 20 respectively via two bearings. The two bearings are respectively installed in corresponding bearing mounting holes on the base 18 and the upper panel 20, and both ends of the driven shaft 7 pass through the inner rings of the two bearings. With the support of the two bearings, the driven shaft 7 can rotate stably between the base 18 and the upper panel 20.

[0027] Driven shaft 7 is connected to the drive assembly for transmission. Specifically, driven synchronous wheel 4 is fixedly sleeved on the outer circumferential surface of driven shaft 7 and rotates synchronously with driven shaft 7. When the drive assembly is running, driven synchronous wheel 4 drives driven shaft 7 to rotate together.

[0028] A first rectangular groove 24 is provided at the upper end of the driven shaft 7. The first rectangular groove 24 is provided at the center of the upper end face of the driven shaft 7 along the axial direction of the driven shaft 7, and is used to cooperate with the first rectangular boss 25 at the lower end of the clutch 8 to realize the circumferential locking and limiting between the driven shaft 7 and the clutch 8.

[0029] An intermediate sleeve 16 is mounted on the upper panel 20. Specifically, the lower part of the intermediate sleeve 16 is mounted on the base 18 via a flange 6 and a fixing seat 5. The intermediate sleeve 16 is a hollow tubular structure with an internal cavity for accommodating the clutch 8 and the screwdriver head rotating seat 10. A through hole is provided at the center of the top of the intermediate sleeve 16 for the screwdriver head 11 to pass through.

[0030] The lower part of the intermediate sleeve 16 has an external thread that mates with the internal thread of the flange 6, thus achieving a threaded fixed connection between the intermediate sleeve 16 and the flange 6. The upper part of the intermediate sleeve 16 also has an external thread for threaded engagement with the adjusting sleeve 14. A second adjusting nut 17 is also fitted on the outer circumference of the intermediate sleeve 16. The second adjusting nut 17 is located above the flange 6 and is used to lock the intermediate sleeve 16 and the flange 6 after the intermediate sleeve 16 is adjusted to the correct position.

[0031] The clutch 8 is movably disposed in the cavity inside the intermediate sleeve 16, and can move and rotate vertically within the intermediate sleeve 16. The clutch 8 has a columnar structure, and its outer diameter is adapted to the inner diameter of the intermediate sleeve 16 to ensure that the clutch 8 can slide and rotate smoothly within the intermediate sleeve 16.

[0032] The lower end of the clutch 8 is provided with a first rectangular boss 25, the shape and size of which are adapted to the first rectangular groove 24 at the upper end of the driven shaft 7. When the clutch 8 moves down until the first rectangular boss 25 enters the first rectangular groove 24, the clutch 8 and the driven shaft 7 form a circumferential engagement limit, and the rotational power of the driven shaft 7 can be transmitted to the clutch 8.

[0033] The upper end of the clutch 8 is provided with a second rectangular groove 27. The second rectangular groove 27 is opened along the axial direction of the clutch 8 at the center of the upper end face of the clutch 8, and is used to cooperate with the second rectangular boss 26 at the lower end of the cutter head rotating seat 10 to realize the circumferential locking and limiting between the cutter head rotating seat 10 and the clutch 8.

[0034] A first support spring 9 is provided between the clutch 8 and the driven shaft 7. Specifically, the lower end face of the clutch 8 and the upper end face of the driven shaft 7 are positioned opposite each other, forming a certain gap between them, and the first support spring 9 is installed in this gap. Mounting grooves 23 are formed on the lower end face of the clutch 8 and the upper end face of the driven shaft 7. The two ends of the first support spring 9 abut against the mounting grooves 23 to ensure the stability of the first support spring 9 during operation. The first support spring 9 is always in a compressed state, applying an upward elastic thrust to the clutch 8, causing the clutch 8 to be lifted upward by the first support spring 9 in its natural state. At this time, the first rectangular boss 25 at the lower end of the clutch 8 remains separated from the first rectangular groove 24 at the upper end of the driven shaft 7, and no power is transmitted between the clutch 8 and the driven shaft 7. During operation, the first rectangular boss 25 and the first rectangular groove 24 are circumferentially engaged and limited, rotating synchronously.

[0035] The cutter head rotating seat 10 is movably disposed in the cavity inside the intermediate sleeve 16, located above the clutch 8. The cutter head rotating seat 10 can also move up and down and rotate vertically within the intermediate sleeve 16.

[0036] The lower end of the cutter head rotating seat 10 is provided with a second rectangular boss 26, the shape and size of which are adapted to the second rectangular groove 27 at the upper end of the clutch 8. When the cutter head rotating seat 10 moves down until the second rectangular boss 26 enters the second rectangular groove 27, the cutter head rotating seat 10 and the clutch 8 form a circumferential engagement limit, and the rotational power of the clutch 8 can be transmitted to the cutter head rotating seat 10.

[0037] The upper end of the screwdriver head rotating base 10 is fixedly connected to the lower end of the screwdriver head 11. In this embodiment, the lower end of the screwdriver head 11 can be inserted into the mounting hole opened at the upper end of the screwdriver head rotating base 10, and fixedly connected by means of interference fit or key connection, so that the screwdriver head 11 can rotate synchronously with the screwdriver head rotating base 10.

[0038] An adjusting sleeve 14 is fitted onto the upper outer surface of the intermediate sleeve 16. The adjusting sleeve 14 has internal threads, while the upper part of the intermediate sleeve 16 has external threads; the adjusting sleeve 14 and the intermediate sleeve 16 are connected via a threaded connection. The vertical position of the adjusting sleeve 14 on the intermediate sleeve 16 can be adjusted by screwing it on. A first adjusting nut 15 is also provided on the adjusting sleeve 14, fitted onto the outside of the intermediate sleeve 16 and located below the adjusting sleeve 14. When the adjusting sleeve 14 is screwed to a suitable height, the first adjusting nut 15 can be tightened to abut against the lower end face of the adjusting sleeve 14, thereby locking and positioning the adjusting sleeve 14.

[0039] A square limiting opening is provided at the top center of the adjusting sleeve 14. The square limiting opening penetrates the top wall of the adjusting sleeve 14 and is used for the fixed sleeve 13 to pass through and to circumferentially limit the fixed sleeve 13.

[0040] The fixing sleeve 13 is vertically inserted into the square limiting opening at the top of the adjusting sleeve 14. The shape of the fixing sleeve 13 matches the square limiting opening; that is, the outer circumference of the fixing sleeve 13 has a square cross-section at the corresponding position, forming a conformal fit with the square limiting opening. Due to the limiting effect of the square limiting opening, the fixing sleeve 13 cannot rotate relative to the adjusting sleeve 14, but it can slide up and down vertically within the square limiting opening.

[0041] A second support spring 12 is provided between the lower end of the fixed sleeve 13 and the upper end of the intermediate sleeve 16. The second support spring 12 is sleeved on the outside of the screwdriver head 11, with one end abutting against the lower end face of the fixed sleeve 13 and the other end abutting against the upper end face of the intermediate sleeve 16. The second support spring 12 is always in a compressed state, applying an upward elastic thrust to the fixed sleeve 13, so that the fixed sleeve 13 is naturally lifted upward by the second support spring 12.

[0042] A through hole is provided at the center of the fixing sleeve 13, extending axially along the fixing sleeve 13 for the screwdriver head 11 to pass through. A screw groove 22 and a workpiece groove 21 are provided at the upper end of the fixing sleeve 13. The screw groove 22 is used to accommodate the brass washer screw 221, keeping the brass washer screw 221 vertical and allowing it to rotate. The workpiece groove 21 is used to accommodate the workpiece 211 and provides anti-rotation positioning for the workpiece 211.

[0043] In this embodiment, the workpiece groove 21 is preferably a V-shaped groove. The V-shaped opening of the V-shaped groove can clamp and position the head of the workpiece 211, preventing the workpiece 211 from rotating circumferentially. The screw groove 22 is preferably a circular groove at the bottom of the V-shaped groove, so that the screwdriver head 11 will not be obstructed when driving the brass pad screw 221 to rotate and will not deviate in the horizontal direction.

[0044] The screwdriver head 11 is movably inserted into the through hole at the center of the top of the intermediate sleeve 16 and the through hole at the center of the fixed sleeve 13. The lower end of the screwdriver head 11 is fixedly connected to the screwdriver head rotating seat 10, and the upper end extends to the screw groove 22 of the fixed sleeve 13 for mating with the head of the brass washer screw 221 placed in the screw groove 22.

[0045] The upper end of the screwdriver head 11 can be provided with a cross-shaped or slotted head, which is adapted to the cross-shaped or slotted head of the brass washer screw 221 so as to drive the brass washer screw 221 to rotate.

[0046] The working process of the brass tile washer screw quick pre-installation device of this utility model is as follows: In the initial state (non-working state), under the elastic thrust of the first support spring 9, the clutch 8 is pushed upward, and the first rectangular boss 25 at the lower end of the clutch 8 is separated from the first rectangular groove 24 at the upper end of the driven shaft 7. No power is transmitted between the clutch 8 and the driven shaft 7. At the same time, under the elastic thrust of the second support spring 12, the fixed sleeve 13 is pushed upward, and the fixed sleeve 13 is in a higher position.

[0047] During operation, motor 1 is started first. Motor 1 drives the driving synchronous pulley 2 to rotate, and the driving synchronous pulley 2 drives the driven synchronous pulley 4 to rotate via the synchronous belt 3. The driven synchronous pulley 4 drives the driven shaft 7 to rotate continuously. At this time, since the clutch 8 is disengaged from the driven shaft 7, the rotation of the driven shaft 7 will not be transmitted to the clutch 8 and the components above it.

[0048] Then, the operator uses their left hand to place the brass washer screw 221 into the screw groove 22 at the upper end of the fixing sleeve 13, with the head of the brass washer screw 221 aligning with the upper end of the screwdriver head 11. Using their right hand, the operator places the workpiece 211 (i.e., the stationary contact point) into the workpiece groove 21 at the upper end of the fixing sleeve 13, with the lower end face of the workpiece 211 contacting the upper end face of the brass washer screw 221.

[0049] Next, the operator gently presses down on the workpiece 211. The workpiece 211 moves the fixing sleeve 13 downward against the elastic thrust of the second support spring 12, and the fixing sleeve 13 slides vertically downward along the square limit opening of the adjusting sleeve 14. At the same time, the workpiece 211 presses down on the brass bearing washer screw 221, which pushes the screwdriver head 11 downward. The screwdriver head 11 moves the screwdriver head rotating seat 10 downward, and the screwdriver head rotating seat 10 pushes the clutch 8 downward against the elastic thrust of the first support spring 9.

[0050] When the fixed sleeve 13 moves down to a certain position, the second rectangular boss 26 at the lower end of the cutter head rotating seat 10 enters the second rectangular groove 27 at the upper end of the clutch 8, achieving circumferential engagement and limiting between the cutter head rotating seat 10 and the clutch 8. At the same time, the clutch 8 continues to move down, and the first rectangular boss 25 at its lower end enters the first rectangular groove 24 at the upper end of the driven shaft 7, achieving circumferential engagement and limiting between the clutch 8 and the driven shaft 7.

[0051] At this time, the rotational power of the driven shaft 7 is sequentially transmitted to the clutch 8, the cutter head rotating seat 10 and the screwdriver head 11. The screwdriver head 11 drives the brass bearing washer screw 221 to rotate, and screws the brass bearing washer screw 221 into the threaded hole of the workpiece 211, thus completing the pre-assembly of a brass bearing washer screw 221 with the workpiece 211.

[0052] After pre-assembly, the operator releases the workpiece 211. Under the elastic restoring force of the second support spring 12, the fixed sleeve 13 is lifted upwards, returning to its initial position. Under the elastic restoring force of the first support spring 9, the clutch 8 is lifted upwards, and the first rectangular boss 25 at the lower end of the clutch 8 separates from the first rectangular groove 24 at the upper end of the driven shaft 7, interrupting the power transmission between the clutch 8 and the driven shaft 7. Simultaneously, the second rectangular boss 26 at the lower end of the cutter head rotating seat 10 separates from the second rectangular groove 27 at the upper end of the clutch 8. The entire device returns to a non-working state and can be immediately operated again.

[0053] In actual use, it may be necessary to adjust the initial height of the fixing sleeve 13 and the extension length of the screwdriver head 11. The fixing sleeve 13 can also be preset with various specifications, the difference being the shape and size of the screw groove 22 and the workpiece groove 21, so as to be suitable for the installation of different processed workpieces 211 and brass pad screws 221.

[0054] When adjusting the initial height of the fixed sleeve 13, the adjusting sleeve 14 can be screwed on. The adjusting sleeve 14 is threaded into the intermediate sleeve 16. Screwing the adjusting sleeve 14 changes its vertical position on the intermediate sleeve 16, thereby changing the initial height of the fixed sleeve 13. After adjustment, tighten the first adjusting nut 15 so that it abuts against the lower end face of the adjusting sleeve 14, thus locking the position of the adjusting sleeve 14.

[0055] When adjusting the overall height of the intermediate sleeve 16, it can be screwed on. The intermediate sleeve 16 is threaded with the flange 6, and screwing on the intermediate sleeve 16 can change the vertical position of the intermediate sleeve 16 relative to the flange 6. After adjustment, tighten the second adjusting nut 17 so that the second adjusting nut 17 abuts against the upper end face of the flange 6, thereby locking the position of the intermediate sleeve 16.

[0056] Through the above adjustment methods, this device can adapt to the assembly requirements of workpieces 211 and brass pad screws 221 of different specifications, and has good versatility.

[0057] This device features a workpiece groove 21 and a screw groove 22 on the fixed sleeve 13. The screw groove 22 accommodates the brass washer screw 221 and mates with the screwdriver head 11. Simultaneously, the workpiece groove 21 accommodates and anti-rotationally positions the workpiece 211. During assembly, the operator presses down on the workpiece 211, causing the fixed sleeve 13 to move downwards against the second support spring 12, ensuring the stability of the workpiece 211 within the workpiece groove 21. The workpiece 211 then drives the brass washer screw 221, pushing the screwdriver head 11, the screwdriver head rotating seat 10, and the clutch 8 downwards against the first support spring 9. This causes the screwdriver head rotating seat 10 and the clutch 8 to engage circumferentially, and the clutch 8 and the driven shaft 7 to engage circumferentially. The drive assembly rotates the driven shaft 7, transmitting the rotation to the screwdriver head 11 to tighten the brass washer screw 221 onto the workpiece 211. The entire workflow relies entirely on mechanical structures, eliminating the need for magnetic adsorption tools and solving the problem of small, non-magnetic brass screws being unable to be attracted by magnetic screwdriver bits and the inconvenience of manual handling.

[0058] Simultaneously, during operation, simply placing the screw and workpiece 211 and pressing down completes the pre-installation of one screw. After loosening, the retaining sleeve 13 resets under the action of the second support spring 12, and the clutch 8 separates from the driven shaft 7 under the action of the first support spring 9, allowing for immediate re-operation. Compared to manual tightening one screw at a time, the assembly speed is significantly improved. Furthermore, each positioning groove ensures that the relative position of each screw and workpiece is consistent, and the torque output of the clutch 8 is stable, avoiding thread damage or tightening torque deviation caused by uneven manual operation, thus ensuring the assembly consistency of batch products.

[0059] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any modifications, alterations, substitutions, and variations made by those skilled in the art to the above embodiments are within the scope of the present invention.

Claims

1. A brass tile spacer screw quick preloading device, characterized in that, Include: Base (18), set on the base (18) upper panel (20) and connected between the base (18) and the upper panel (20) support block (19); Drive assembly, provided on the upper panel (20), for output rotating power; Driven shaft (7), rotatably provided on the base (18) and the upper panel (20), and transmission connection with the drive assembly, the upper end of the driven shaft (7) is provided with a first rectangular slot (24); Intermediate sleeve (16), provided on the upper panel (20), the intermediate sleeve (16) is provided with a cavity and a through hole is provided at the top center position; Clutch (8), movably arranged in the intermediate sleeve (16), the lower end of the clutch (8) is provided with a first rectangular boss (25) matched with the first rectangular slot (24), and the first support spring (9) is arranged between the clutch (8) and the driven shaft (7); The cutter head rotating seat (10) is movably arranged in the intermediate sleeve (16) and located above the clutch (8), the lower end of the cutter head rotating seat (10) can be circumferentially connected with the upper end of the clutch (8). Adjusting sleeve (14), sleeved on the upper end of the intermediate sleeve (16), can be adjusted vertically, the adjusting sleeve (14) is provided with a square limiting opening at the top center position; Fixed sleeve (13), vertically penetrating the square limiting opening and matching the square limiting opening in shape, the second support spring (12) is arranged between the lower end of the fixed sleeve (13) and the upper end of the intermediate sleeve (16), the upper end of the fixed sleeve (13) is provided with a screw groove (22) for accommodating brass tile screw (221) and a workpiece groove (21) for accommodating and anti-rotation positioning the workpiece (211), the fixed sleeve (13) is provided with a through hole at the center position; Screwdriver bit (11), movably penetrating the through hole of the intermediate sleeve (16) and the through hole of the fixed sleeve (13), the lower end of the screwdriver bit (11) is fixedly connected with the cutter head rotating seat (10).

2. The brass escutcheon screw quick preloading device according to claim 1, characterized in that: The drive assembly includes motor (1), driving synchronous wheel (2), synchronous belt (3) and driven synchronous wheel (4), the motor (1) is fixed on the upper panel (20), the output end of the motor (1) rotates and penetrates between the base (18) and the upper panel (20), and the driving synchronous wheel (2) is connected with the output end of the motor (1), the driven synchronous wheel (4) is fixed on the driven shaft (7), and the synchronous belt (3) is connected between the driving synchronous wheel (2) and the driven synchronous wheel (4).

3. The brass escutcheon screw quick preloading device according to claim 1, characterized in that: The base (18) is provided with a ring-shaped fixed seat (5), the inner ring of the fixed seat (5) is fixedly provided with a flange (6), the flange (6) is provided with an internal thread, the lower part of the intermediate sleeve (16) is provided with an external thread, the flange (6) is threadedly matched with the intermediate sleeve (16), and the intermediate sleeve (16) is provided with a second adjusting nut (17) for locking.

4. The brass escutcheon screw quick preloading device according to claim 1, characterized in that: The upper portion of the intermediate sleeve (16) is provided with external threads, the adjusting sleeve (14) is provided with internal threads, the adjusting sleeve (14) is threadedly connected with the intermediate sleeve (16), and the adjusting sleeve (14) is provided with a first adjusting nut (15) for locking.

5. The brass escutcheon screw quick preloading device according to claim 1, characterized in that: The workpiece groove (21) is provided in a V-shaped groove, so as to prevent the machining workpiece (211) from rotating, and the bottom center of the screw groove (22) is provided in a circular groove.

6. The brass escutcheon screw quick preloading device according to claim 1, characterized in that: The lower end of the cutter head rotating seat (10) is provided with a second rectangular boss (26), and the upper end of the clutch (8) is provided with a second rectangular groove (27) matched with the second rectangular boss (26).

7. The brass escutcheon screw quick preloading device according to claim 1, characterized in that: The opposite surface of the clutch (8) and the driven shaft (7) is provided with a mounting groove (23), and the first supporting spring (9) is mounted in the mounting groove (23).

8. The brass escutcheon screw quick preloading device according to claim 1, characterized in that: The driven shaft (7) is rotatably arranged on the base (18) and the upper panel (20) through two bearings.

Images