Automatic screw screwing device

Abstract

The utility model relates to the technical field of screw tightening, in particular to an automatic screw tightening device, which overcomes the defect that a workpiece cannot be fixed while a screw is conveyed in the prior art, and comprises a case, a motor is arranged in the case, a worm is driven to rotate on one side of the motor, a second rotating rod is rotationally connected in the case, and the second rotating rod is rotationally connected with the second rotating rod. A worm wheel is fixedly connected to the surface of the second rotating rod, the worm wheel is in meshed connection with the worm, a fixing base is fixedly connected to the interior of the machine box, a rotating wheel is fixedly connected to the upper side of the second rotating rod, the second rotating rod penetrates through the fixing base, a fixing cylinder is fixedly connected to the upper side of the rotating wheel, and a reciprocating ring is slidably connected to the surface of the fixing cylinder; the two sides of the reciprocating ring are fixedly connected with guide rods, and the upper side of the fixing base is fixedly connected with a limiting base. The device provided by the utility model has the characteristics that the practicability is high, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of screw tightening, in particular to an automatic screw tightening device. Background Art

[0002] During the processing and assembly of automotive lamps, the lamps need to be tightened with screws. Manual tightening of screws is inefficient and cannot ensure that the tightening degree of each screw is relatively consistent. Therefore, an automated device is needed to automatically install and tighten the screws. The automatic screw tightening devices on the market cannot simultaneously drive the screws to place and fix the workpiece through a motor.

[0003] In the existing patent publication number CN212858475U, a robot automatic screw feeding and tightening device is disclosed, including a frame, a screwdriver holding tube for holding an electric screwdriver and a feeder for storing screws are provided on the frame, an electric-controlled magnetic valve is provided at the lower end of the feeder, and a feeding assistant is also provided, the feeding assistant includes a screw holding tube and a rotating shaft, the screw holding tube and the rotating shaft are connected by a connecting rod, the inner wall of the screw holding tube is provided with radially opposite limit blocks for keeping the screw in a vertical state, a spring for driving the limit block and the inner wall of the screw holding tube is provided between the limit block and the inner wall of the screw holding tube, the rotating shaft is rotatably connected to the frame, and a control device for driving the screw holding tube to reciprocate between the feeder and the screwdriver holding tube with the rotating shaft as the axis is connected to the rotating shaft. This device pushes the screw to the bottom of the electric screwdriver for tightening through a motor, and the screw enters the screw placement through a guide tube, but the motor cannot fix the workpiece at the same time, and it needs to be fixed manually or other devices are started to fix it, and the work efficiency needs to be improved.

[0004] Therefore, it is necessary to design an automatic screw tightening device that is highly practical and increases work efficiency. Utility Model Content

[0005] The utility model aims to provide an automatic screw tightening device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic screw tightening device, comprising a chassis, a motor is arranged inside the chassis, a worm is driven to rotate on one side of the motor, a second rotating rod is rotatably connected inside the chassis, a worm wheel is fixedly connected to the surface of the second rotating rod, the worm wheel is meshingly connected to the worm, a fixed seat is fixedly connected inside the chassis, a rotating wheel is fixedly connected to the upper side of the second rotating rod, the second rotating rod passes through the fixed seat, a fixed cylinder is fixedly connected to the upper side of the rotating wheel, a reciprocating ring is slidably connected to the surface of the fixed cylinder, guide rods are fixedly connected on both sides of the reciprocating ring, and a limited seat is fixedly connected to the upper side of the fixed seat. The guide rod passes through the limit seat and is slidably connected to the guide rod one side of which is fixedly connected to a push block, and one side of the chassis is rotatably connected to the first rotating rod, the upper side of the first rotating rod is fixedly connected to a gear 1, and the gear 1 is meshed with the crown gear. One side of the chassis is rotatably connected to a third rotating rod, the surface of the third rotating rod is fixedly connected to a gear 3, and the gear 3 is meshed with the gear 1, and the base is fixedly connected to the upper side of the base, and a lamp is placed on the upper side of the base, and a pair of rack plates are slidably connected to the lower side of the base, and the rack plate is meshed with gear 4 inside, and the gear 4 is fixedly connected to the third rotating rod, and one side of the rack plate is fixedly connected to a splint, and a pair of fixing rods are fixedly connected to the inside of the chassis at both sides, and a slide plate is fixedly connected to the fixing rod on one side, and the push block is adapted to the slide plate, and a screw tightening assembly is provided on one side of the chassis.

[0007] According to the above technical solution, the screw rotation assembly includes an electric screwdriver, a cylinder is provided on one side inside the chassis, a push rod is provided on the lower side of the cylinder, the lower side of the push rod is fixedly connected to the electric screwdriver, and the position of the electric screwdriver corresponds to the threaded hole on the upper side of the lamp.

[0008] According to the above technical solution, a screw inlet is provided on the upper side of the chassis, and a conduit is provided on the lower side of the screw inlet. The conduit passes through the chassis and corresponds to the position of the slide groove in the slide groove plate.

[0009] According to the above technical solution, the internal slide groove of the slide groove plate is slidably connected with a screw, and a circular groove is provided on one side of the slide groove plate. The size of the circular groove is adapted to the screw nut, and the position of the circular groove is adapted to the electric screwdriver.

[0010] According to the above technical solution, a support base is fixedly connected to one side of the chassis, and the inside of the support base is rotatably connected to the worm.

[0011] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0012] (1) By setting a gear mechanism, the motor drives the worm on one side to rotate, the worm drives the worm wheel on one side to rotate, the worm wheel drives the second rotating rod fixed inside to rotate, the rotating wheel on the upper side of the second rotating rod rotates with the second rotating rod at this time, the rotating wheel drives the fixed cylinder fixed on the upper side to rotate, the fixed cylinder drives the reciprocating ring to move, the guide rods fixed on both sides of the reciprocating ring are limited by the limit seat to horizontally move instead of circular motion, a pair of fixed rods are fixed inside the chassis, a slide plate is fixed on one side of the fixed rod, the push block slides inside the slide plate, the displacement of the guide rod drives the push block to move in the slide plate, at the same time, when the worm rotates, the gear assembly on one side of the worm rotates with the rotation of the worm to drive the meshing gear three on one side to rotate, the rotation of the gear three drives the internally fixed third rotating rod to rotate, the third rotating rod drives the gear four on its upper side to rotate, the rack plates on both sides of the gear four slide in the opposite direction, the clamping plate clamps the lamp through the reverse displacement of the rack plate, this structure can make a motor push the screw to the appropriate position while clamping the lamp, high working efficiency.

[0013] (2) By providing a circular groove, when the push block pushes the screw to slide in the slide plate, the screw slides to the circular groove. The size of the circular groove is adapted to the screw nut, and the screw falls into the threaded hole of the lamp. No manual operation is required for placement, thereby increasing work efficiency.

[0014] (3) By providing a screw entrance and a guide tube, the screw is inserted from the screw entrance, and the screw enters the guide tube and is embedded in the slide groove, thereby eliminating the need for manual alignment of the position of the screw and the slide groove, thereby increasing work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 It is a schematic diagram of the internal parts of the utility model;

[0017] Figure 3 It is a three-dimensional schematic diagram of the clamping assembly of the utility model;

[0018] Figure 4 It is a three-dimensional schematic diagram of the clamping assembly of the utility model;

[0019] In the figure: 1. chassis; 2. screw inlet; 3. cylinder; 4. push rod; 5. electric screwdriver; 6. guide tube; 7. motor; 8. worm; 9. bevel gear one; 10. support seat; 11. first rotating rod; 12. gear one; 13. second rotating rod; 14. worm gear; 15. fixed seat; 16. limit seat; 17. guide rod; 18. fixed cylinder; 19. reciprocating ring; 20. third rotating rod; 21. gear three; 22. base; 23. rotating wheel; 24. screw; 25. circular groove; 26. slide plate; 27. splint; 28. rack plate; 29. ​​gear four; 30. push block; 31. lamp; 32. fixing rod; 33. bevel gear two. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4 The utility model provides a technical solution: an automatic screw tightening device, including a chassis 1, a motor 7 is arranged inside the chassis 1, a worm 8 is driven to rotate on one side of the motor 7, a second rotating rod 13 is rotatably connected inside the chassis 1, a worm wheel 14 is fixedly connected to the surface of the second rotating rod 13, the worm wheel 14 is meshed with the worm 8, a fixed seat 15 is fixedly connected inside the chassis 1, a rotating wheel 23 is fixedly connected to the upper side of the second rotating rod 13, the second rotating rod 13 passes through the fixed seat 15, a fixed cylinder 18 is fixedly connected to the upper side of the rotating wheel 23, a reciprocating ring 19 is slidably connected to the surface of the fixed cylinder 18, guide rods 17 are fixedly connected on both sides of the reciprocating ring 19, a limited seat 16 is fixedly connected to the upper side of the fixed seat 15, the guide rod 17 passes through the limited seat 16 and is slidably connected to it, a push block 30 is fixedly connected to one side of the guide rod 17, and a fixed seat 15 is fixedly connected to the upper side of the fixed seat 15. A first rotating rod 11 is rotatably connected to the side, and a gear 12 is fixedly connected to the upper side of the first rotating rod 11. A third rotating rod 20 is rotatably connected to one side inside the chassis 1. A bevel gear assembly is provided on the surface of the worm 8 and the first rotating rod 11. The bevel gear assembly enables the rotation of the worm 8 to drive the third rotating rod 20 to rotate. A base 22 is fixedly connected to the inside of the chassis 1, and a lamp 31 is placed on the upper side of the base 22. A pair of rack plates 28 are slidably connected to the lower side of the base 22. A gear four 29 is meshed and connected inside the rack plate 28. The gear four 29 is fixedly connected to the third rotating rod 20, and a splint 27 is fixedly connected to one side of the rack plate 28. A pair of fixed rods 32 are fixedly connected to both sides of the inside of the chassis 1, and a slide plate 26 is fixedly connected to one side of the fixed rod 32. The push block 30 is adapted to the slide plate 26, and a screw tightening assembly is provided on one side of the chassis 1.

[0022] Specifically, the motor 7 is started, the motor 7 drives the worm 8 on one side to rotate, the worm 8 drives the worm wheel 14 on one side to rotate, the worm wheel 14 drives the second rotating rod 13 fixed inside to rotate, the rotating wheel 23 on the upper side of the second rotating rod 13 rotates with the second rotating rod 13 at this time, the rotating wheel 23 drives the fixed cylinder 18 fixed on the upper side to rotate, the fixed cylinder 18 drives the reciprocating ring 19 to move, the guide rods 17 fixed on both sides of the reciprocating ring 19 are restricted by the limit seat 16 to move horizontally instead of circularly, a pair of fixed rods 32 are fixed inside the chassis 1, and one side of the fixed rod 32 is fixed The slide plate 26 and the push block 30 slide inside the slide plate 26, and the displacement of the guide rod 17 drives the push block 30 to move in the slide plate 26. At the same time, when the worm 8 rotates, the gear assembly on one side of the worm 8 drives the meshing gear three 21 on one side to rotate as the worm 8 rotates. The rotation of the gear three 21 drives the third rotating rod 20 fixed inside to rotate, and the third rotating rod 20 drives the gear four 29 on its upper side to rotate. The rack plates 28 on both sides of the gear four 29 slide in the opposite direction, and the clamping plate 27 clamps the lamp 31 through the reverse displacement of the rack plate 28.

[0023] This structure allows a motor 7 to clamp the lamp 31 while pushing the screw 24 to a suitable position, eliminating the need for manual fixing and alignment of the screws, and improving work efficiency.

[0024] The screw rotation assembly includes an electric screwdriver 5, a cylinder 3 is provided on one side of the interior of the chassis 1, a push rod 4 is provided on the lower side of the cylinder 3, the lower side of the push rod 4 is fixedly connected to the electric screwdriver 5, and the position of the electric screwdriver 5 corresponds to the threaded hole on the upper side of the lamp 31. The gear assembly includes a bevel gear 1 9, which is fixedly connected to one end of the worm 8, a bevel gear 2 33 is fixedly connected to the surface of one end of the first rotating rod 11, and the bevel gear 2 33 is meshed with the bevel gear 1 9, and a gear 12 is fixedly connected to the surface of the first rotating rod 11, and the gear 1 12 is meshed with the gear 3 21.

[0025] Specifically, after the screw 24 is pushed into the threaded hole of the lamp 31 by the push block 30, the cylinder 3 is started. The cylinder 3 uses the push rod 4 to push the electric screwdriver 5 to support the screw, and then the electric screwdriver 5 is started to tighten it. The cylinder 3 and the electric screwdriver 5 can cooperate to efficiently tighten the screw into the lamp 31. The bevel gear 1 9 in the gear assembly is driven to rotate by the rotation of the worm 8. The bevel gear 1 9 drives the meshing bevel gear 2 33 next to it to rotate. The first rotating rod 11 fixed inside the bevel gear 2 33 follows the rotation. The rotation of the first rotating rod 11 drives the gear 1 12 fixed on the surface to rotate. The gear 1 12 drives the third rotating rod 20 to rotate by meshing with the gear 3 21.

[0026] A screw inlet 2 is provided on the upper side of the chassis 1 , and a guide tube 6 is provided on the lower side of the screw inlet 2 . The guide tube 6 passes through the chassis 1 and corresponds to the position of the slide groove in the slide groove plate 26 .

[0027] Specifically, the screw 24 is put in from the screw inlet 2, embedded in the slide plate 26 through the guide tube 6, and is restricted by the nut of the screw 24 so as not to fall off, and then the screw 24 is pushed to a suitable position by the push block 30.

[0028] It eliminates the need for manual alignment of the screws and the slide slots, thus increasing work efficiency.

[0029] The inner slide groove of the slide groove plate 26 is slidably connected with the screw 24 , and a circular groove 25 is provided on one side of the slide groove plate 26 . The size of the circular groove 25 is adapted to the nut of the screw 24 , and the position of the circular groove 25 is adapted to the electric screwdriver 5 .

[0030] Specifically, when the screw 24 slides in the slide plate 26, the nut and the circular groove 25 correspond in size, and are automatically aligned when sliding to the circular groove 25. After the lamp 31 is clamped by the clamping plate 27, the circular groove 25 is automatically aligned, so that the screw 24 falls from the circular groove 25 and automatically corresponds to the threaded hole on the upper side of the lamp 31, eliminating the step of manually aligning the screws and increasing work efficiency.

[0031] A support base 10 is fixedly connected to one side of the chassis 1 , and the interior of the support base 10 is rotatably connected to the worm 8 .

[0032] Specifically, the support seat 10 is used to bear the gravity of the worm 8 and increase the structural stability.

[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-limiting from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An automatic screw tightening device, comprising a case (1), characterized in that: The chassis (1) is provided with a motor (7) inside, a worm (8) is driven to rotate on one side of the motor (7), a second rotating rod (13) is rotatably connected inside the chassis (1), a worm wheel (14) is fixedly connected to the surface of the second rotating rod (13), the worm wheel (14) is meshingly connected to the worm (8), a fixing seat (15) is fixedly connected inside the chassis (1), a rotating wheel (23) is fixedly connected to the upper side of the second rotating rod (13), and the second rotating rod (13) passes through the fixing seat ( 15), a fixed cylinder (18) is fixedly connected to the upper side of the rotating wheel (23), a reciprocating ring (19) is slidably connected to the surface of the fixed cylinder (18), guide rods (17) are fixedly connected to both sides of the reciprocating ring (19), a limited position seat (16) is fixedly connected to the upper side of the fixed seat (15), the guide rod (17) passes through the limited position seat (16) and is slidably connected thereto, a push block (30) is fixedly connected to one side of the guide rod (17), and a first rotating rod (11) is rotatably connected to one side of the inner side of the chassis (1). ), the first rotating rod (11) is fixedly connected to a gear 1 (12) on its upper side, a third rotating rod (20) is rotatably connected to one side of the interior of the chassis (1), the worm (8) and the surface of the first rotating rod (11) are provided with a helical gear assembly, the helical gear assembly enables the worm (8) to rotate and drive the third rotating rod (20) to rotate, a base (22) is fixedly connected to the interior of the chassis (1), a lamp (31) is placed on the upper side of the base (22), and a pair of A rack plate (28), the rack plate (28) is internally meshed with a gear four (29), the gear four (29) is fixedly connected to the third rotating rod (20), one side of the rack plate (28) is fixedly connected to a clamping plate (27), a pair of fixed rods (32) are fixedly connected to both sides of the chassis (1), one side of the fixed rods (32) is fixedly connected to a slide plate (26), the push block (30) is adapted to the slide plate (26), and a screw tightening assembly is provided on one side of the chassis (1).

2. The automatic screw tightening device according to claim 1, characterized in that: The screw rotating assembly comprises an electric screwdriver (5), a cylinder (3) is arranged on one side of the chassis (1), a push rod (4) is arranged on the lower side of the cylinder (3), the lower side of the push rod (4) is fixedly connected to the electric screwdriver (5), the position of the electric screwdriver (5) corresponds to the threaded hole on the upper side of the lamp (31), the gear assembly comprises a bevel gear 1 (9), the bevel gear 1 (9) is fixedly connected to one end of the worm (8), a bevel gear 2 (33) is fixedly connected to the surface of one end of the first rotating rod (11), the bevel gear 2 (33) is meshingly connected to the bevel gear 1 (9), a gear 1 (12) is fixedly connected to the surface of the first rotating rod (11), and the gear 1 (12) is meshingly connected to the gear 3 (21).

3. The automatic screw tightening device according to claim 1, characterized in that: A screw inlet (2) is provided on the upper side of the chassis (1), and a guide tube (6) is provided on the lower side of the screw inlet (2); the guide tube (6) passes through the chassis (1) and corresponds to the position of the slide groove in the slide groove plate (26).

4. The automatic screw tightening device according to claim 2, characterized in that: The inner slide groove of the slide groove plate (26) is slidably connected with a screw (24), and a circular groove (25) is provided on one side of the slide groove plate (26). The size of the circular groove (25) is adapted to the nut of the screw (24), and the position of the circular groove (25) is adapted to the electric screwdriver (5).

5. The automatic screw tightening device according to claim 1, characterized in that: A support base (10) is fixedly connected to one side of the chassis (1), and the interior of the support base (10) is rotatably connected to the worm (8).

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