An automatic screw locking device

Abstract

The present application belongs to the technical field of installation equipment, and particularly relates to an automatic screw locking device, which comprises a mounting frame, a first cross frame, a second cross frame and a lifting mechanism installed on the mounting frame, a motor fixedly installed on the first cross frame, a transmission rod in transmission connection with an output end of the motor, a hollow lifting rod axially slidably installed on the second cross frame, the transmission rod being rotatably installed in the lifting rod, a connecting seat fixedly installed at a lower end of the lifting rod, a transmission mechanism and a bit head installed in the connecting seat, the central axis of the transmission rod and the central axis of the bit head being parallel to each other and not coinciding with each other, the transmission rod and the bit head being in transmission connection through the transmission mechanism, a limiting mechanism for limiting a product to be installed with a screw at a specific position, and a feeding mechanism for feeding the screw to a coaxial position with the bit head and below the bit head. The purpose is to solve the problem that the existing equipment structure defects result in the inability to tighten the screw of the upper blocked installation hole.

Description

Technical Field

[0001] This invention belongs to the field of installation equipment technology, and specifically relates to an automatic screw-locking device. Background Technology

[0002] Manufacturing involves a wide variety of products. Some complex products require manufacturing multiple components before being assembled into a complete product. The connections between these components are often achieved using screws, nuts, and similar screws. Traditionally, this was done manually using ordinary screwdrivers or electric screwdrivers. However, with technological advancements, manufacturing is gradually shifting towards automation.

[0003] Chinese invention patent (publication number: CN114799847A) discloses an automated bolt tightening device, in which the bolt bit is slidably connected to the drive component of the drive motor via a transmission shaft sleeve, and the bolt bit and the drive motor are coaxially arranged to complete the tightening of the bolt.

[0004] However, the above-mentioned device cannot tighten the screws when the mounting holes are blocked. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic screw-locking device to solve the problem that existing equipment structural defects prevent screws from being tightened in mounting holes that are obstructed from above.

[0006] To achieve the above-mentioned technical objectives, the technical solution adopted by the present invention is as follows:

[0007] An automatic screw-locking device, comprising:

[0008] Mounting frame, on which a first horizontal frame, a second horizontal frame and a lifting mechanism are mounted, the first horizontal frame is located above the second horizontal frame, the lifting mechanism is fixedly mounted on the mounting frame, the first horizontal frame is vertically slidably mounted on the mounting frame, and the output end of the lifting mechanism is fixedly connected to the first horizontal frame;

[0009] The motor is fixedly mounted on the first crossbeam, and the output end of the motor is connected to a transmission rod.

[0010] A hollow lifting rod is axially slidably mounted on a second crossbeam, and a transmission rod is rotatably mounted inside the lifting rod.

[0011] A connecting seat is fixedly installed at the lower end of the lifting rod. A transmission mechanism and a bit are installed inside the connecting seat. The central axis of the transmission rod is parallel to and does not coincide with the central axis of the bit. The transmission rod and the bit are connected by transmission mechanism.

[0012] A limiting mechanism for securing a product with screws installed in a specific position;

[0013] A feeding mechanism for conveying screws to a position coaxial with and below the bit.

[0014] Further defined, the feeding mechanism includes a bearing mechanism, a pushing mechanism, a feeding conduit, a detection mechanism, and a controller;

[0015] The bearing mechanism includes a hinge base, on which two transverse clamps and an opening and closing mechanism for driving the two transverse clamps to open and close synchronously are mounted. The inner side of the free end of the transverse clamp is provided with a groove for locking screws.

[0016] The pushing mechanism is mounted on the mounting frame, and the free end of the pushing mechanism is fixedly connected to the hinge seat, which is used to drive the bearing mechanism to switch between the receiving position and the mounting position;

[0017] The feed conduit is used to add screws to the bearing mechanism when the pushing mechanism drives the bearing mechanism to the receiving position;

[0018] The detection mechanism is used to detect the downward movement of the connector;

[0019] The controller is signal-connected to the opening / closing mechanism and the detection mechanism;

[0020] When the bit moves downward under the drive of the lifting mechanism until it contacts the screw, the detection mechanism sends a signal to the controller to control the opening and closing mechanism to open the free ends of the two transverse clamps.

[0021] This structural design, through the setting of the detection mechanism, allows the bit to move downwards under the drive of the lifting mechanism until it contacts the screw. Then, the controller controls the opening and closing mechanism to open the free ends of the two horizontal chucks, thereby disengaging the horizontal chucks from the screw. This avoids the bit applying pressure to the bearing mechanism through the screw, which would cause the pushing mechanism to bear excessive vertical pressure and thus damage the pushing mechanism. This design is highly practical.

[0022] Furthermore, a first bearing is installed between the tip of the screwdriver bit and the connecting seat. The first bearing is used to bear the reverse force transmitted from the screwdriver bit to the connecting seat when the screwdriver bit presses against the screw.

[0023] This structural design, through the setting of the first bearing, replaces the connecting seat in bearing the reverse force transmitted from the bit to the connecting seat when the bit is pressing the screw. This avoids the problem of excessive wear caused by the tip of the bit and the connecting seat rotating relative to each other under pressure for a long time, thus improving the service life of the equipment and reducing the difficulty of equipment maintenance.

[0024] Furthermore, a second bearing is installed between the lower end of the transmission rod and the connecting seat. The second bearing is used to bear the reverse force transmitted to the transmission rod through the connecting seat when the screwdriver bit presses the screw.

[0025] This structural design, through the setting of a second bearing, allows the second bearing to replace the connecting seat in bearing the reverse force transmitted to the transmission rod when the bit is pressing the screw. This avoids the problem of excessive wear caused by the lower end of the transmission rod and the connecting seat rotating relative to each other under pressure for a long time, thus improving the service life of the equipment and reducing the difficulty of equipment maintenance.

[0026] Further specifying, the limiting mechanism is a tray, the tray having a limiting groove, and the bottom of the product being secured within the limiting groove.

[0027] This structural design uses a tray with a limiting groove as a limiting mechanism to keep the product in a specific position. It is simple in structure, easy to use, and highly practical.

[0028] Furthermore, the loading tray is provided with multiple limiting grooves circumferentially;

[0029] The mounting frame is equipped with a rotating mechanism that drives the loading tray to rotate intermittently;

[0030] A transverse telescopic mechanism is installed on the second cross frame. A connecting plate is installed on the free end of the transverse telescopic mechanism. A sleeve is fixedly installed on the connecting plate. The lifting rod is axially slidably installed inside the sleeve.

[0031] Furthermore, the output end of the motor and the transmission rod are flexibly connected.

[0032] This structural design uses a rotating mechanism to drive a tray with multiple circumferentially spaced limiting slots to rotate. This allows users to place unprocessed products into empty limiting slots during production, and then have the tray move them to the processing position. Combined with the lateral telescopic mechanism's lateral pulling of the lifting rod and the lifting mechanism's vertical pulling of the lifting rod, the lifting rod and connecting seat can laterally avoid obstructions, improving production efficiency.

[0033] Furthermore, universal joints are installed at both the output end of the motor and the upper end of the transmission rod, and a connecting rod is installed between the two universal joints.

[0034] This structural design, with universal joint connecting rods installed at both ends, completes the flexible transmission connection between the motor output end and the transmission rod. While ensuring that the rotation of the motor output end can be smoothly transmitted to the transmission rod, it also preserves the lateral movement freedom between the transmission rod and the motor output end. In addition, the sleeve restricts the lifting rod, so that the motor's lifting can drive the lifting rod to move axially. The structure is simple and highly practical.

[0035] Furthermore, the central axis of the sleeve is inclined from top to bottom towards the product.

[0036] This structural design, through the tilting of the sleeve, allows the screw to be installed at an angle in the tilted mounting hole, making it highly practical.

[0037] Further specifying, a strip is installed on the second crossbeam, the transverse telescopic mechanism is fixedly installed on the strip, and the connecting plate is slidably installed on the strip.

[0038] This structural design uses strips to support the connecting plate. When the sleeve is tilted, the strips bear the vertical pressure applied to the connecting plate by the lifting rod, avoiding damage caused by radial pressure on the lateral telescopic mechanism. This design is highly practical.

[0039] Further specifying, the mounting bracket includes a vertical guide rod, and both the first horizontal frame and the second horizontal frame are slidably mounted on the vertical guide rod;

[0040] The second crossbar has a connecting hole;

[0041] The output end of the lifting mechanism passes through the connecting hole and is provided with a limiting block below the second crossbeam;

[0042] A compression spring is fitted between the first and second crossbeams at the output end of the lifting mechanism.

[0043] A retaining ring is fixedly installed on the vertical guide rod below the second crossbeam.

[0044] This structural design, through the setting of limit blocks and compression springs, allows the lifting mechanism to drive the second crossbeam to move synchronously during the stroke of the first crossbeam when it is in the upper part of the first crossbeam. This avoids the problem of excessive wear caused by excessive axial sliding stroke of the lifting rod, which would result in an excessive offset angle between the central axis of the motor output end and the central axis of the transmission rod.

[0045] Alternatively, during the stroke of the first crossbeam at the lower part, the retaining ring can obstruct the second crossbeam, allowing the first crossbeam to move downwards independently, thereby pushing the lifting rod to slide axially, ensuring the smooth advancement of the screwdriver bit, which is highly practical.

[0046] The invention employing the above technical solution has the following advantages:

[0047] 1. With an independently set feeding mechanism and a screwdriver bit set parallel to the motor shaft, the screwdriver bit can complete the screw installation of the obscured mounting holes even when the mounting holes are blocked.

[0048] 2. By setting up the detection mechanism, when the bit moves downward under the drive of the lifting mechanism and comes into contact with the screw, the controller controls the opening and closing mechanism to open the free ends of the two horizontal chucks, thereby disengaging the horizontal chucks from the screw. This avoids the bit applying pressure to the bearing mechanism through the screw, which would cause the pushing mechanism to bear too much vertical pressure and thus damage the pushing mechanism. This feature is highly practical.

[0049] 3. By setting the first bearing, the first bearing replaces the connecting seat to bear the reverse force transmitted from the bit to the connecting seat when the bit is pressing the screw. This avoids the problem of excessive wear caused by the bit tip and the connecting seat rotating relative to each other under pressure for a long time, thus improving the service life of the equipment and reducing the difficulty of equipment maintenance.

[0050] 4. By setting up a second bearing, the second bearing replaces the connecting seat to bear the reverse force transmitted to the transmission rod when the bit is pressing the screw. This avoids the problem of excessive wear caused by the lower end of the transmission rod and the connecting seat rotating relative to each other under pressure for a long time, thus improving the service life of the equipment and reducing the difficulty of equipment maintenance.

[0051] 5. The rotating mechanism drives the tray with multiple circumferentially opening limiting slots to rotate, allowing the user to place unprocessed products into the empty limiting slots during the production process, and then the tray will move them to the processing position. In conjunction with the lateral telescopic mechanism for the lateral pulling of the lifting rod and the lifting mechanism for the vertical pulling of the lifting rod, the lifting rod and the connecting seat can laterally avoid obstructions, thus improving production efficiency.

[0052] 6. By using a connecting rod with universal joints installed at both ends, a flexible transmission connection is completed between the motor output end and the transmission rod. While ensuring that the rotation of the motor output end can be smoothly transmitted to the transmission rod, the degree of freedom of lateral movement between the transmission rod and the motor output end is preserved. At the same time, the sleeve restricts the lifting rod, so that the motor's lifting can drive the lifting rod to move axially. The structure is simple and highly practical.

[0053] 7. By tilting the sleeve, the screw can be installed at an angle in the tilted mounting hole, which is highly practical.

[0054] 8. The connecting plate is supported by the strip plate. When the sleeve is set at an inclination, the strip plate supports the vertical pressure applied to the connecting plate by the lifting rod, avoiding the damage caused by the radial pressure on the lateral telescopic mechanism. It is highly practical.

[0055] 9. By setting the limit block and compression spring, the lifting mechanism can drive the second crossbeam to move synchronously when the first crossbeam is in the upper part of the stroke during the lifting process. This avoids the problem of excessive wear caused by excessive axial sliding stroke of the lifting rod, which would result in excessive offset angle between the central axis of the motor output end and the central axis of the transmission rod.

[0056] Alternatively, during the stroke of the first crossbeam at the lower part, the retaining ring can obstruct the second crossbeam, allowing the first crossbeam to move downwards independently, thereby pushing the lifting rod to slide axially, ensuring the smooth advancement of the screwdriver bit, which is highly practical. Attached Figure Description

[0057] The present invention can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0058] Figure 1 This is a schematic diagram of the structure of an embodiment of the automatic screw-locking device of the present invention. Figure 1 ;

[0059] Figure 2 for Figure 1 Enlarged structural diagram at point A;

[0060] Figure 3 This is an enlarged structural diagram of some components in an embodiment of the automatic screw-locking device of the present invention. Figure 1 ;

[0061] Figure 4 This is an enlarged structural schematic diagram of the feeding mechanism in an embodiment of an automatic screw-locking device of the present invention;

[0062] Figure 5 This is a schematic diagram of the structure of an embodiment of the automatic screw-locking device of the present invention. Figure 2 ;

[0063] Figure 6 This is a schematic diagram of the structure of an embodiment of the automatic screw-locking device of the present invention. Figure 3 ;

[0064] Figure 7 for Figure 6 Enlarged structural diagram at point B;

[0065] Figure 8 This is an enlarged structural diagram of some components in an embodiment of the automatic screw-locking device of the present invention. Figure 2 ;

[0066] The symbols for the main components are explained below:

[0067] Mounting bracket 1, vertical guide rod 10, first horizontal frame 11, motor 111, transmission rod 112, connecting rod 1120

[0068] Second crossbeam 12, strip groove 120, lateral telescopic mechanism 121, connecting plate 122, sleeve 123, strip plate 124.

[0069] Lifting mechanism 13, limit block 131, compression spring 132, retaining ring 133

[0070] 2. Lifting rod

[0071] Connecting seat 3, bit 31, transmission gear 310, first bearing 311, second bearing 312

[0072] Hinged base 41, transverse chuck 410, push-pull mechanism 411, rack 412, synchronizing gear 413

[0073] Propulsion mechanism 42, feed conduit 43,

[0074] 5. Tray, 50. Bottle body, 51. C-shaped handle, 52. Mounting hole, 53. Screw. Detailed Implementation

[0075] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that similar or identical parts are referred to by the same reference numerals in the drawings or description. Implementations not shown or described in the drawings are forms known to those skilled in the art. In addition, directional terms mentioned in the embodiments, such as "up," "down," "top," "bottom," "left," "right," "front," and "back," are only for reference to the directions in the drawings and are not intended to limit the scope of protection of the present invention.

[0076] like Figures 1 to 8 As shown, an automatic screw-locking device of the present invention includes:

[0077] Mounting frame 1, on which a first crossbeam 11, a second crossbeam 12 and a lifting mechanism 13 are mounted. The first crossbeam 11 is located above the second crossbeam 12. The lifting mechanism 13 is fixedly mounted on the mounting frame 1. The first crossbeam 11 is vertically slidably mounted on the mounting frame 1. The output end of the lifting mechanism 13 is fixedly connected to the first crossbeam 11. In this embodiment, the lifting mechanism 13 is preferably a hydraulic cylinder. In practice, depending on the actual situation, an actuator such as a pneumatic cylinder or an axial motor can also be selected as the lifting mechanism 13.

[0078] Motor 111 is fixedly mounted on the first cross frame 11, and the output end of motor 111 is connected to a transmission rod 112.

[0079] The hollow lifting rod 2 is axially slidably mounted on the second crossbeam 12, and the transmission rod 112 is rotatably mounted inside the lifting rod 2.

[0080] Connecting seat 3 is fixedly installed at the lower end of lifting rod 2. A transmission mechanism and a bit 31 are installed inside the connecting seat 3. The central axis of the transmission rod 112 is parallel to and does not coincide with the central axis of the bit 31. The transmission rod 112 and the bit 31 are connected by transmission mechanism.

[0081] A restraining mechanism is used to restrain the product with the screw 53 installed in a specific position;

[0082] The feeding mechanism is used to transport the screw 53 to a position coaxial with and below the bit 31.

[0083] The feeding mechanism includes a bearing mechanism, a pushing mechanism 42, a feeding conduit 43, a detection mechanism, and a controller;

[0084] The bearing mechanism includes a hinge base 41, on which two transverse clamps 410 are mounted and an opening and closing mechanism for driving the two transverse clamps 410 to open and close synchronously. The inner side of the free end of the transverse clamp 410 is provided with a groove for locking the screw 53.

[0085] The pushing mechanism 42 is mounted on the mounting frame 1. The free end of the pushing mechanism 42 is fixedly connected to the hinge seat 41 and is used to drive the bearing mechanism to switch between the receiving position and the mounting position.

[0086] The feed conduit 43 is used to add screws 53 to the bearing mechanism when the pushing mechanism 42 drives the bearing mechanism to the receiving position;

[0087] The testing mechanism is used to detect the downward movement of the connector 3;

[0088] Signal connections are established between the controller, opening / closing mechanism, and detection mechanism;

[0089] When the bit 31 moves downward under the drive of the lifting mechanism 13 until it contacts the screw 53, the detection mechanism sends a signal to the controller to control the opening and closing mechanism to open the free ends of the two transverse chucks 410.

[0090] By setting up a detection mechanism, when the bit 31 moves downward under the drive of the lifting mechanism 13 and comes into contact with the screw 53, the controller controls the opening and closing mechanism to open the free ends of the two horizontal chucks 410, thereby disengaging the horizontal chucks 410 from the screw 53. This prevents the bit 31 from applying pressure to the bearing mechanism through the screw 53, which would cause the pushing mechanism 42 to bear excessive vertical pressure and thus damage the pushing mechanism 42. This mechanism is highly practical.

[0091] When in use, the limiting mechanism restricts the product to a specific position, so that the central axis of the bit 31 is aligned with the mounting hole 52, and the connecting seat 3 is located below the obstruction, and the lifting rod 2 is located on the side of the obstruction.

[0092] The screw 53 is then conveyed by the feed guide tube 43 to the grooves of the two transverse clamps 410 located in the receiving position and in the closed state;

[0093] Then, the pushing mechanism 42 pushes the hinge seat 41 to move laterally, so as to drive the bearing mechanism to the installation position, so that the screw 53 is aligned with the central axis of the bit 31 and the mounting hole 52, and is located between the bit 31 and the mounting hole 52.

[0094] The lifting mechanism 13 drives the first crossbeam 11 to move downward, and drives the lifting rod 2 via the transmission rod 112 to move along the central axis of the lifting rod 2 towards the mounting hole 52 until the bit 31 contacts the screw 53. Then, the detection mechanism sends a signal to the controller to control the opening and closing mechanism to open the free ends of the two transverse chucks 410.

[0095] At the same time, the bit 31 continues to move toward the mounting hole 52, causing the screw 53 to enter the mounting hole 52. The rotation of the motor 111 drives the transmission rod 112 to rotate, which in turn drives the bit 31 to rotate through the transmission mechanism, thereby causing the screw 53 to be screwed into the mounting hole 52.

[0096] A first bearing 311 is installed between the top of the bit 31 and the connecting seat 3. The first bearing 311 is used to bear the reverse force transmitted from the bit 31 to the connecting seat 3 when the bit 31 presses the screw 53.

[0097] By setting the first bearing 311, the first bearing 311 replaces the connecting seat 3 in bearing the reverse force transmitted from the bit 31 to the connecting seat 3 when the bit 31 is pressing the screw 53. This avoids the problem of excessive wear caused by the top of the bit 31 and the connecting seat 3 rotating relative to each other under pressure for a long time, thereby improving the service life of the equipment and reducing the difficulty of equipment maintenance.

[0098] A second bearing 312 is installed between the lower end of the transmission rod 112 and the connecting seat 3. The second bearing 312 is used to bear the reverse force transmitted to the transmission rod 112 through the connecting seat 3 when the bit 31 presses the screw 53.

[0099] By setting the second bearing 312, the second bearing 312 replaces the connecting seat 3 in bearing the reverse force transmitted to the transmission rod 112 through the connecting seat 3 when the bit 31 is pressing the screw 53. This avoids the problem of excessive wear caused by the lower end of the transmission rod 112 and the connecting seat 3 rotating relative to each other under pressure for a long time, thereby improving the service life of the equipment and reducing the difficulty of equipment maintenance.

[0100] The limiting mechanism is a tray 5, which has a limiting groove, and the bottom of the product is locked in the limiting groove.

[0101] In practice, depending on the actual situation, a method such as a clamping arm can be selected to restrict the product. In this embodiment, a loading tray 5 with a restriction groove is used as a restriction mechanism to restrict the product to a specific position. The structure is simple, easy to use, and highly practical.

[0102] The tray 5 has multiple limiting slots circumferentially arranged; in this embodiment, four slots are preferred.

[0103] The mounting frame 1 is equipped with a rotating mechanism that drives the tray 5 to rotate intermittently. In this embodiment, the transmission mechanism is preferably an incomplete gear transmission mechanism. In practice, a stepper motor can also be selected to drive the tray 5 to rotate intermittently, depending on the actual situation.

[0104] A transverse telescopic mechanism 121 is installed on the second crossbeam 12. A connecting plate 122 is installed on the free end of the transverse telescopic mechanism 121. A sleeve 123 is fixedly installed on the connecting plate 122. The lifting rod 2 is axially slidably installed in the sleeve 123. In this embodiment, the transverse telescopic mechanism 121 is preferably a hydraulic cylinder. In fact, depending on the actual situation, an actuator such as a pneumatic cylinder or an axial motor can also be selected as the transverse telescopic mechanism 121.

[0105] The output end of the motor 111 and the transmission rod 112 are flexibly connected.

[0106] In practice, depending on the actual situation, only one limiting slot can be set on the loading tray 5. The product can be placed under the bit 31 manually, avoiding obstructions. In this embodiment, the loading tray 5 with multiple limiting slots in the circumference is driven to rotate by the rotating mechanism. This allows the user to place the unprocessed product into the empty limiting slot during the production process, and then the loading tray 5 will move it to the processing position. With the lateral extension mechanism 121 pulling the lifting rod 2 laterally and the lifting mechanism 13 pulling the lifting rod 2 vertically, the lifting rod 2 and the connecting seat 3 can avoid obstructions laterally, thus improving production efficiency.

[0107] Universal joints are installed at the output end of motor 111 and the upper end of transmission rod 112, and a connecting rod 1120 is installed between the two universal joints.

[0108] In practice, depending on the actual situation, a flexible coupling can be installed at the output end of the motor 111 and the transmission rod 112 to complete the flexible transmission connection between the output end of the motor 111 and the transmission rod 112. In this embodiment, a flexible transmission connection between the output end of the motor 111 and the transmission rod 112 is completed by installing a connecting rod 1120 with universal joints at both ends. While ensuring that the rotation of the output end of the motor 111 can be smoothly transmitted to the transmission rod 112, the transmission rod 112 and the output end of the motor 111 are kept free to move laterally. At the same time, the sleeve 123 restricts the lifting rod 2, so that the lifting of the motor 111 can drive the lifting rod 2 to move axially. The structure is simple and highly practical.

[0109] The central axis of sleeve 123 is inclined from top to bottom towards the product.

[0110] In practice, depending on the actual situation, the sleeve 123 can also be set to a vertical shape. In this embodiment, by tilting the sleeve 123, the screw 53 can be installed in the tilted mounting hole 52 at an inclined angle, which is more practical.

[0111] A strip plate 124 is installed on the second crossbar 12, a transverse telescopic mechanism 121 is fixedly installed on the strip plate 124, and a connecting plate 122 is slidably installed on the strip plate 124.

[0112] The connecting plate 122 is supported by the strip 124. When the sleeve 123 is set at an inclination, the strip 124 supports the vertical pressure applied to the connecting plate 122 by the lifting rod 2, thus avoiding the damage caused by the radial pressure on the transverse telescopic mechanism 121. It is highly practical.

[0113] The second crossbeam 12 has a strip groove 120. The length direction of the strip groove 120 is perpendicular to the extension direction of the transverse telescopic mechanism 121. The strip plate 124 is fixed to the second crossbeam 12 by fixing bolts that pass through the strip groove 120.

[0114] In practice, depending on the actual situation, the strip 124 can also be directly welded onto the second crossbeam 12. In this embodiment, through the cooperation between the strip groove 120 and the fixing bolt, the strip 124 can be installed at different positions on the second crossbeam 12, thereby matching products with different distances between the mounting hole 52 and the mounting bracket 1, thus having a wider range of applications.

[0115] Mounting bracket 1 includes a vertical guide rod 10, and a first horizontal bracket 11 and a second horizontal bracket 12 are both slidably mounted on the vertical guide rod 10;

[0116] The second crossbar 12 has a connecting hole;

[0117] A limiting block 131 is provided below the second crossbeam 12 through the connection hole at the output end of the lifting mechanism 13;

[0118] A compression spring 132 is sleeved at the output end of the lifting mechanism 13 between the first crossbeam 11 and the second crossbeam 12;

[0119] A retaining ring 133 is fixedly installed on the vertical guide rod 10 below the second crossbeam 12.

[0120] In fact, depending on the actual situation, the second crossbeam 12 can also be directly fixed on the mounting bracket 1. In this embodiment, through the setting of the limiting block 131 and the compression spring 132, the lifting mechanism 13 can drive the second crossbeam 12 to move synchronously during the stroke of the first crossbeam 11 when it is in the upper part of the lifting mechanism 13, so as to avoid the problem of excessive wear caused by the excessive axial sliding stroke of the lifting rod 2, which would result in the excessive offset angle between the central axis of the motor 111 output end and the central axis of the transmission rod 112.

[0121] Alternatively, during the lower stroke of the first crossbeam 11, the retaining ring 133 can obstruct the second crossbeam 12, allowing the first crossbeam 11 to move downwards independently, thereby pushing the lifting rod 2 to slide axially, ensuring the smooth advancement of the bit 31, which is highly practical.

[0122] The transmission mechanism consists of multiple meshing transmission gears 310. In this embodiment, three gears are preferred.

[0123] In practice, depending on the actual situation, a belt or similar material can be selected as the transmission mechanism. In this embodiment, a transmission mechanism is formed by multiple meshing transmission gears 310 to complete the transmission connection between the transmission rod 112 and the bit 31. The structure is simple, the power transmission is stable, and the stability is strong.

[0124] The opening and closing mechanism includes a push-pull mechanism 411, a rack 412, and two synchronizing gears 413;

[0125] The push-pull mechanism 411 is fixedly installed on the hinge seat 41, and the movable end of the push-pull mechanism 411 is fixedly connected to the rack 412. In this embodiment, the push-pull mechanism 411 is preferably a hydraulic cylinder. In fact, depending on the actual situation, an actuator such as a cylinder or an axial motor can also be selected as the push-pull mechanism 411.

[0126] The rack 412 has teeth on both sides, and the rack 412 is located between two synchronous gears 413 and meshes with both synchronous gears 413 at the same time.

[0127] The synchronous gear 413 is fixedly connected to the transverse chuck 410, and the central axis of the synchronous gear 413 coincides with the hinge axis of the transverse chuck 410 and the hinge seat 41.

[0128] In practice, depending on the actual situation, a method such as connecting the telescopic rod and connecting rod to the two transverse clamps 410 can be selected to realize the opening and closing action of the two transverse clamps 410. In this embodiment, the synchronous opening and closing action of the two transverse clamps 410 is completed through the mutual cooperation of the push-pull mechanism 411, the rack 412 and the two synchronous gears 413. The structure is simple, easy to use and highly practical.

[0129] The mounting bracket 1 is also equipped with a vertical telescopic mechanism, and a connecting plate is installed at the telescopic end of the vertical telescopic mechanism.

[0130] The pushing mechanism 42, the feed conduit 43 and the detection mechanism are all fixedly installed on the connecting plate, and the hinge seat 41 is slidably installed on the connecting plate.

[0131] In this embodiment, the lateral and vertical telescopic mechanism is preferably a hydraulic cylinder. In practice, depending on the actual situation, actuators such as pneumatic cylinders or axial motors can also be selected as the vertical telescopic mechanism.

[0132] The vertical telescopic mechanism drives the feeding mechanism to move up and down. When the length of the screw 53 is greater than the height of the horizontal chuck 410, causing the bottom of the screw 53 to protrude from the lower end face of the horizontal chuck 410, the vertical telescopic mechanism drives the lower end face of the screw 53 to rise above the upper end face of the mounting hole 52, thus preventing the screw 53 from scratching the product when it moves laterally.

[0133] Meanwhile, after the screw 53 is aligned with the mounting hole 52, the vertical telescopic mechanism can be used to drive the feeding mechanism to move downward as a whole, thereby bringing the lower end of the screw 53 closer to the mounting hole 52, so that the screw 53 can be tightened more accurately by the bit 31 into the mounting hole 52, which is highly practical.

[0134] In this embodiment, the product on which the screw 53 is installed is a bottle body 50 with a C-shaped handle 51, wherein the obstruction is the top of the C-shaped handle 51.

[0135] When in use, place the bottle body 50 in the limiting groove of the tray 5 so that the C-shaped handle 51 faces outward relative to the bottle body 50;

[0136] Then, the rotating mechanism drives the tray 5 to rotate, so that the bottle 50 is located in the corresponding position of the connecting seat 3;

[0137] Start the lifting mechanism 13. The output end of the lifting mechanism 13 drives the first crossbeam 11 to move downward. In conjunction with the compression spring 132, it drives the second crossbeam 12 to move downward synchronously until the second crossbeam 12 abuts against the retaining ring 133. At this time, the connecting seat 3 is lower than the top of the C-shaped handle 51 in height (e.g., Figure 6 and Figure 7 (as shown)

[0138] Then activate the horizontal telescopic mechanism 121 to drive the connecting plate 122 and the sleeve 123 to move laterally, so that the central axis of the bit 31 is aligned with the mounting hole 52, and the connecting seat 3 is located below the obstruction, and the lifting rod 2 is located on the side of the obstruction.

[0139] The vertical telescopic mechanism is activated simultaneously, which drives the feeding mechanism to move upward and the screw 53 is delivered by the feeding guide tube 43 to the groove of the two horizontal clamps 410 located in the receiving position and in the closed state.

[0140] Then, the pushing mechanism 42 pushes the hinge seat 41 to move laterally, thereby moving the bearing mechanism to the installation position, so that the screw 53 is aligned with the central axis of the bit 31 and the mounting hole 52, and is located between the bit 31 and the mounting hole 52. Then, the vertical telescopic mechanism moves the lower end of the screw 53 closer to the mounting hole 52 (e.g., Figure 1 and Figure 2 (as shown)

[0141] The lifting mechanism 13 continues to drive the first crossbeam 11 downwards, which in turn drives the lifting rod 2 via the transmission rod 112, moving it along the central axis of the sleeve 123 towards the mounting hole 52. When the bit 31 contacts the screw 53, the detection mechanism sends a signal to the controller to control the opening and closing mechanism, thereby causing the free ends of the two transverse chucks 410 to open (e.g., ...). Figure 8 (as shown)

[0142] At the same time, the bit 31 continues to move toward the mounting hole 52, driving the screw 53 into the mounting hole 52. The rotation of the motor 111 drives the transmission rod 112 to rotate, which in turn drives the bit 31 to rotate, thereby driving the screw 53 to be screwed into the mounting hole 52.

[0143] After the screws are screwed in, all components are reset to their original positions, preparing for the next installation of screw 53.

[0144] The above provides a detailed description of the automatic screw-locking device provided by the present invention. The specific embodiments described are merely for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. An automatic screw-locking device, characterized in that: include: Mounting frame (1), on which a first crossbeam (11), a second crossbeam (12) and a lifting mechanism (13) are mounted. The first crossbeam (11) is located above the second crossbeam (12). The lifting mechanism (13) is fixedly mounted on the mounting frame (1). The first crossbeam (11) is vertically slidably mounted on the mounting frame (1). The output end of the lifting mechanism (13) is fixedly connected to the first crossbeam (11). The motor (111) is fixedly mounted on the first crossbeam (11), and the output end of the motor (111) is connected to a transmission rod (112). A hollow lifting rod (2) is axially slidably mounted on a second crossbeam (12), and a transmission rod (112) is rotatably mounted inside the lifting rod (2); Connecting seat (3), the connecting seat (3) is fixedly installed at the lower end of the lifting rod (2), the connecting seat (3) is equipped with a transmission mechanism and a bit (31), the central axis of the transmission rod (112) is parallel to and does not coincide with the central axis of the bit (31), the transmission rod (112) and the bit (31) are connected by transmission mechanism; A limiting mechanism for confining the product with the screws (53) installed in it to a specific position; A feeding mechanism for conveying screws (53) to a position coaxial with and below the bit (31); The feeding mechanism includes a bearing mechanism, a pushing mechanism (42), a feeding conduit (43), a detection mechanism, and a controller; The bearing mechanism includes a hinge seat (41), on which two transverse clamps (410) and an opening and closing mechanism for driving the two transverse clamps (410) to open and close synchronously are installed. The inner side of the free end of the transverse clamp (410) is provided with a groove for locking screws (53). The pushing mechanism (42) is mounted on the mounting frame (1), and the free end of the pushing mechanism (42) is fixedly connected to the hinge seat (41) to drive the bearing mechanism to switch between the receiving position and the mounting position; The feed conduit (43) is used to add screws (53) to the bearing mechanism when the pushing mechanism (42) drives the bearing mechanism to the receiving position. The detection mechanism is used to detect the downward movement of the connecting seat (3); The controller is signal-connected to the opening / closing mechanism and the detection mechanism; When the bit (31) moves downward under the drive of the lifting mechanism (13) to contact the screw (53), the detection mechanism sends a signal to the controller to control the opening and closing mechanism to open the free ends of the two transverse clamps (410). A transverse telescopic mechanism (121) is installed on the second cross frame (12). A connecting plate (122) is installed on the free end of the transverse telescopic mechanism (121). A sleeve (123) is fixedly installed on the connecting plate (122). The lifting rod (2) is axially slidably installed in the sleeve (123). The output end of the motor (111) and the transmission rod (112) are flexibly connected; Universal joints are installed at the output end of the motor (111) and the upper end of the transmission rod (112), and a connecting rod (1120) is installed between the two universal joints.

2. The automatic screw-locking device according to claim 1, characterized in that: A first bearing (311) is installed between the top of the bit (31) and the connecting seat (3). The first bearing (311) is used to bear the reverse force transmitted from the bit (31) to the connecting seat (3) when the bit (31) presses the screw (53).

3. The automatic screw-locking device according to claim 1, characterized in that: A second bearing (312) is installed between the lower end of the transmission rod (112) and the connecting seat (3). The second bearing (312) is used to bear the reverse force transmitted to the transmission rod (112) through the connecting seat (3) when the bit (31) presses the screw (53).

4. The automatic screw-locking device according to claim 1, characterized in that: The limiting mechanism is a tray (5), on which a limiting groove is provided, and the bottom of the product is locked in the limiting groove.

5. An automatic screw-locking device according to claim 4, characterized in that: The loading tray (5) has multiple limiting slots circumferentially open; The mounting frame (1) is equipped with a rotating mechanism that drives the loading tray (5) to rotate intermittently.

6. An automatic screw-locking device according to claim 1, characterized in that: The central axis of the sleeve (123) is inclined from top to bottom towards the product.

7. An automatic screw-locking device according to claim 1, characterized in that: A strip plate (124) is installed on the second cross frame (12), the transverse telescopic mechanism (121) is fixedly installed on the strip plate (124), and the connecting plate (122) is slidably installed on the strip plate (124).

8. An automatic screw-locking device according to claim 1, characterized in that: The mounting bracket (1) includes a vertical guide rod (10), and the first horizontal frame (11) and the second horizontal frame (12) are both slidably mounted on the vertical guide rod (10); The second crossbar (12) has a connecting hole; The output end of the lifting mechanism (13) passes through the connecting hole and is provided with a limiting block (131) below the second crossbeam (12); A compression spring (132) is sleeved at the output end of the lifting mechanism (13) between the first crossbeam (11) and the second crossbeam (12). The vertical guide rod (10) is fixedly installed with a retaining ring (133) below the second crossbeam (12).

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