A car headrest screw gripping robot

Abstract

This invention relates to the field of robot technology for automotive headrest production, specifically to an automotive headrest screw gripping robot. It includes an operating table with a fixed frame on the table. A screw feeder is positioned in front of the fixed frame, and a material placement component is positioned in front of the screw feeder. The screw feeder is fixedly mounted on the top of the operating table. A translation plate is positioned directly above the screw feeder, with two slide rails at the bottom of the translation plate. A U-shaped frame is fixedly mounted on the top of the translation plate, and a drag chain is installed inside the U-shaped frame. One end of the drag chain is connected to a screw tightening component. This invention utilizes four drive shafts movably mounted on a rotating ring, with screwdriver bits mounted at the bottom of the drive shafts. This allows four screwdriver bits to simultaneously pick up screws from the screw feeder, avoiding the need to retrieve screws after each screw has been tightened.

Description

Technical Field

[0001] This invention relates to the field of robot technology for automobile headrest production, specifically to an automobile headrest screw gripping robot. Background Technology

[0002] As a product that provides additional support, car headrests can help relieve neck fatigue for drivers and can also cushion the pressure from acceleration or deceleration of the vehicle in the event of a collision, ensuring that the head and neck of the driver are not seriously injured. In the production process of car headrests, screw-grabbing robots are often used to pick up screws and screw them into the screw holes on the car headrest, assembling the various parts of the car headrest together.

[0003] Some existing screw-grabbing robots can only tighten one screw at a time when tightening screws on car headrests, and then return to the screw supply to reassemble the screws after tightening. This is inefficient and needs to be improved. Summary of the Invention

[0004] The purpose of this invention is to provide a robot for grasping car headrest screws, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A car headrest screw gripping robot includes an operating table with a fixed frame on the operating table. A screw feeder is located in front of the fixed frame, and a material placement component is located in front of the screw feeder. The screw feeder is fixedly installed on the top of the operating table. A translation plate is located directly above the screw feeder. Two slide rails are located at the bottom of the translation plate. A U-shaped frame is fixedly installed at the top of the translation plate. A drag chain is located inside the U-shaped frame, and a screw tightening component is connected to one end of the drag chain.

[0007] The material placement assembly includes two vertical blocks, a rotating motor is disposed between the two vertical blocks, and a material placement platform is disposed on the outer wall of the output shaft of the rotating motor.

[0008] The screw tightening assembly includes a vertical plate, a fixed frame on the front end face of the vertical plate, a rotating screw inside the fixed frame, a lifting block movably mounted on the outer wall of the rotating screw, a groove on the front end face of the lifting block, and a second rotating motor inside the groove. A fitting ring is connected to the outer wall of the output shaft of the second rotating motor, and the fitting ring is fixedly mounted on the outer wall of the electric push rod. A stabilizing platform is provided at the bottom end of the electric push rod, a third rotating motor is provided at the bottom end of the stabilizing platform, a rotating shaft is connected to the bottom end of the output shaft of the third rotating motor, and a mounting platform is movably mounted on the outer wall of the rotating shaft. A telescopic connecting rod is provided between the top end of the mounting platform and the bottom end of the stabilizing platform, and the telescopic connecting rod is connected to the stabilizing platform and the mounting platform via a rotating shaft.

[0009] A mounting rod is installed at the bottom of the mounting platform, and a rotary motor is installed at the bottom of the mounting rod. A connecting plate is connected to the outer wall of the output shaft of the rotary motor, and a rotating ring is connected to the outer wall of the connecting plate. A fixing ring is installed around the rotating ring, and the top of the fixing ring is connected to the bottom of the mounting platform by two connecting columns. The rotating ring has four through holes, and a drive shaft is installed in each of the four through holes. A screwdriver head is installed at the bottom of each of the four drive shafts.

[0010] Each drive shaft has a locking block at its top end, and a collar is movably fitted on the outer wall of the drive shaft. Two limiting blocks are fixedly connected to the outer wall of the collar, and a positioning frame is movably fitted on the outer wall of each limiting block. The positioning frame is fixedly installed on the top end of the rotating ring. A movable ring is movably fitted on the outer wall of the drive shaft. A limiting rod is provided at the top end of the movable ring, and a vertical mounting plate is provided at the bottom end of the movable ring.

[0011] A mounting plate is fixedly connected to the outer wall of the fixing ring. A horizontal plate is provided on the side wall of the mounting plate. A triangular mounting plate is provided at the bottom end of the horizontal plate. An L-shaped fixing platform is provided at the bottom end of the mounting plate. Two protrusions are provided at the top of the L-shaped fixing platform. An arc-shaped plate is provided between the two protrusions.

[0012] The bottom end of the rotating ring is provided with four lifting grooves, and the diameter of the lifting grooves is the same as the diameter of the limiting rod. The top of the limiting rod extends into the lifting groove at the bottom end of the rotating ring.

[0013] The bottom end of the rotating shaft is provided with a slot, and the length, width and height of the slot are the same as the length, width and height of the card block.

[0014] The telescopic connecting rod consists of a column and a telescopic column. The column is a hollow column with an opening at its bottom. The top of the telescopic column extends into the inner cavity of the column through the opening at the bottom of the column. Several arc-shaped grooves are vertically arranged on the inner wall of the column, and two spring plungers that match the arc-shaped grooves are arranged on the outer wall of the telescopic column.

[0015] The inner wall of the collar is provided with a circular groove, and two sliders are slidably installed in the circular groove, and the sliders are fixedly connected to the outer wall of the drive shaft.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] This invention movably mounts four drive shafts on a rotating ring and installs screwdriver heads at the bottom of the drive shafts, allowing the four screwdriver heads to simultaneously pick up screws from the screw feeder, thus avoiding the need to pick up a screw again after tightening or loosening it.

[0018] As the vertical mounting plate rotates with the rotating ring, it contacts the highest point of the arc-shaped plate, allowing the drive shaft to automatically align with the bottom end of the rotating shaft. The locking block at the top of the drive shaft is then inserted into the slot at the bottom of the rotating shaft, facilitating automatic feeding and screw tightening.

[0019] The slider in the circular groove on the inner wall of the movable ring is connected to the drive shaft. This allows the drive shaft to move upward synchronously when the vertical mounting plate at the bottom of the movable ring contacts the arc plate. When the hydraulic push rod pushes the triangular mounting plate downward and moves the movable ring downward, the drive shaft moves downward and disengages from the rotating shaft. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 This is a schematic diagram of the material placement component structure of the present invention.

[0022] Figure 3 This is a schematic diagram of the screw tightening assembly structure of the present invention.

[0023] Figure 4 This is a partial structural diagram of the screw tightening assembly of the present invention.

[0024] Figure 5 For the present invention Figure 3 Enlarged view of the structure at point A in the middle.

[0025] Figure 6 This is a schematic diagram of the stabilizing platform structure of the present invention.

[0026] Figure 7 For the present invention Figure 6 Enlarged view of the structure at point B in the middle.

[0027] Figure 8 For the present invention Figure 7 Enlarged schematic diagram of the structure at point C.

[0028] Figure 9 For the present invention Figure 7Enlarged schematic diagram of the structure at point D.

[0029] Figure 10 This is a schematic diagram of the mounting plate structure of the present invention.

[0030] In the diagram: 1. Operating table; 2. Fixed frame; 3. Slide rail; 4. Horizontal plate; 5. U-shaped frame; 6. Cable chain; 7. Screw tightening assembly; 8. Material placement assembly; 9. Screw feeder; 10. Telescopic connecting rod; 11. Vertical mounting block; 12. Rotary motor; 13. Material placement platform; 14. Vertical plate; 15. Fixed frame; 16. Rotating screw; 17. Lifting block; 18. Second rotary motor; 19. Fitting ring; 20. Electric push rod; 21. Stabilizing platform; 22. Third rotary motor; 3. Rotating shaft; 24. Mounting platform; 25. Mounting rod; 26. Rotary motor; 27. Connecting plate; 28. Rotating ring; 29. ​​Fixed ring; 30. Connecting column; 31. Drive shaft; 32. Clamping block; 33. Collar; 34. Limiting block; 35. Positioning frame; 36. Movable ring; 37. Screwdriver head; 38. Vertical mounting plate; 39. Mounting plate; 40. Horizontal plate; 41. Triangular mounting plate; 42. L-shaped fixing platform; 43. Protrusion; 44. Arc plate; 45. Limiting rod. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Please see Figures 1 to 10 This invention provides a technical solution: a robot for gripping car headrest screws, such as... Figure 1As shown, the device includes an operating table 1, with a fixed bracket 2 fixedly mounted on the top of the operating table 1. A screw feeder 9 is located in front of the fixed bracket 2. The screw feeder 9 adopts the existing Jianfeng rotary screw feeder JF-818LMJ. A material placement component 8 is located in front of the screw feeder 9, and the screw feeder 9 is fixedly mounted on the top of the operating table 1. The feeding tray, one of the components of the screw feeder 9, has four material placement grooves, which facilitates the placement of four screws into the four material placement grooves on the feeding tray. The diameter of the feeding tray is the same as the diameter of the rotating ring 28, which facilitates the alignment of the four screwdriver heads 37 on the rotating ring 28 with the four screws on the feeding tray, one of the components of the screw feeder 9. A translation plate 4 is located directly above the screw feeder 9, and the bottom of the translation plate 4 is equipped with... There are two slide rails 3, which adopt ball linear guides in the prior art. The slider of the ball linear guide is fixedly connected to the translation plate 4, which facilitates the translation of the translation plate 4 by the slide rails 3. A U-shaped frame 5 is fixedly installed on the top of the translation plate 4. The front end of the U-shaped frame 5 is provided with a groove, and a ball linear guide is provided in the groove. The slider on the ball linear guide is connected to the screw fastening assembly 7. A drag chain 6 is provided in the U-shaped frame 5. One end of the drag chain 6 is connected to the screw fastening assembly 7. The drag chain 6 can provide protection for the ball linear guide on the U-shaped frame 5 and the wiring on the screw fastening assembly 7. A control main board is provided on the operating table 1. The control main board is connected to the electrical appliances on the operating table 1 through the wiring and sets the working program so that the equipment on the operating table 1 can be used smoothly.

[0033] Please see Figure 2 The material placement assembly 8 includes two vertical mounting blocks 11. The bottom ends of the two vertical mounting blocks 11 are fixedly connected to the operating table 1. A rotating motor 12 is arranged between the two vertical mounting blocks 11. The right side of the rotating motor 12 passes through one of the vertical mounting blocks 11 and extends to the right side of the vertical mounting block 11. A material placement table 13 is fixedly connected to the outer wall of the output shaft of the rotating motor 12. The rotating motor 12 drives the material placement table 13 to rotate, which facilitates the tightening and installation of car headrest screws that require different installation angles.

[0034] Please see Figures 3-10The screw-on assembly 7 includes a vertical plate 14. The rear back of the vertical plate 14 is connected to a slider, which is part of a ball linear guide structure formed by the groove on the front side of the U-shaped frame 5. A fixing frame 15 is provided on the front side of the vertical plate 14. A through hole is provided on the top side wall of the fixing frame 15, and a motor is installed in the through hole. The bottom end of the motor's output shaft faces downward and is connected to a rotating screw 16. The bottom end of the rotating screw 16 is rotatably connected to the inner wall of the bottom end of the fixing frame 15. A lifting block 17 is movably fitted on the outer wall of the rotating screw 16, and the length and width dimensions of the lifting block 17 are the same as those of the fixing frame 15. The inner wall of the 5-section frame has the same length and width. A motor drives a rotating screw 16 to rotate, allowing the lifting block 17 to move vertically up and down within the fixed frame 15. The front end of the lifting block 17 has a groove, and a second rotating motor 18 is installed within the groove. A sleeve ring 19 is fixedly connected to the outer wall of the output shaft of the second rotating motor 18. An electric push rod 20 is fixedly installed on the sleeve ring 19. A stabilizing platform 21 is fixedly connected to the bottom end of the electric push rod 20. A third rotating motor 22 is located at the bottom end of the stabilizing platform 21. The bottom end of the output shaft of the third rotating motor 22 is connected to... A rotating shaft 23 has a mounting platform 24 movably mounted on its outer wall. A telescopic connecting rod 10 is provided between the top of the mounting platform 24 and the bottom of the stabilizing platform 21. The telescopic connecting rod 10 is connected to both the stabilizing platform 21 and the mounting platform 24 via a rotating shaft. The telescopic connecting rod 10 consists of a column and a telescopic column. The column is a hollow column with an opening at its bottom. The top of the telescopic column extends into the inner cavity of the column through the opening at the bottom of the column. Several arc-shaped grooves are vertically arranged on the inner wall of the column, and two grooves are provided on the outer wall of the telescopic column. The matching spring plunger with the arc-shaped groove can be inserted into the arc-shaped groove at different heights to fix the position of the telescopic column. This facilitates the adjustment of the angle of the rotating shaft 23 during the rotation of the second rotating motor 18. After adjustment, it avoids the problem of the mounting platform 24 being unable to fix itself on the outer wall of the rotating shaft 23, which could easily cause it to rotate on its own. In addition, both the rotating motor 12 and the second rotating motor 18 are equipped with frequency converters, which facilitates locking the angle of the rotating motor 12 and the second rotating motor 18 after rotation during use.

[0035] A mounting rod 25 is mounted on the bottom of the mounting platform 24. A rotary motor 26 is mounted on the bottom of the mounting rod 25. A connecting plate 27 is connected to the outer wall of the output shaft of the rotary motor 26. A rotating ring 28 is connected to the outer wall of the connecting plate 27. A fixed ring 29 is movably fitted onto the outer wall of the rotating ring 28. Two connecting posts 30 are fixedly mounted on the top of the fixed ring 29. The tops of the two connecting posts 30 are fixedly connected to the bottom of the mounting platform 24. The rotating ring 28 has four through holes, each containing a drive shaft 31. A screwdriver head 37 is mounted on the bottom of each drive shaft 31. The screwdriver head 37 is hollow inside, and a magnet is installed inside the screwdriver head 37. A locking block 32 is provided at the top of the drive shaft 31, and a locking groove is provided at the bottom of the rotating shaft 23. The length, width, and height dimensions of the locking groove are the same as those of the locking block 32. A collar 33 is movably fitted on the outer wall of the drive shaft 31. A circular groove is provided on the inner wall of the collar 33, and two sliders are slidably installed in the circular groove. The sliders are fixedly connected to the outer wall of the drive shaft 31 to prevent the collar 33 from rotating as the drive shaft 31 rotates with the rotating shaft 23. The collar 33 can rotate with the drive shaft 31. The drive shaft 31 moves vertically up and down. Two limit blocks 34 are fixedly connected to the outer wall of the collar 33. Positioning frames 35 are movably fitted onto the outer wall of each limit block 34. The positioning frames 35 are fixedly installed on the top of the rotating ring 28. The top of the rotating ring 28 is provided with eight hidden grooves. During the up and down movement of the collar 33, the limit blocks 34 can be placed into the hidden grooves to avoid affecting the up and down movement of the collar 33. A movable ring 36 is provided on the outer wall of the drive shaft 31. A circular groove is provided on the outer wall of the movable ring 36. A slider is slidably installed in the circular groove. The sliders are all fixedly connected. On the outer wall of the drive shaft 31, the drive shaft 31 can drive the movable ring 36 to move up and down during the lifting and lowering motion, and prevent the drive shaft 31 from driving the movable ring 36 to rotate during the rotation. The bottom end of the rotating ring 28 is provided with four lifting grooves, and the diameter of the lifting grooves is the same as the diameter of the limiting rod 45. The top of the limiting rod 45 extends into the lifting groove at the bottom end of the rotating ring 28, and the inner wall of the top of the lifting groove is connected to the limiting rod 45 by a connecting spring. The top of the movable ring 36 is provided with a limiting rod 45, and the bottom end of the movable ring 36 is provided with a vertical mounting plate 38.

[0036] A mounting plate 39 is fixedly connected to the outer wall of the fixed ring 29. A horizontal plate 40 is provided on the side wall of the mounting plate 39. A hydraulic push rod is installed on the bottom plate of the horizontal plate 40. A triangular mounting plate 41 is connected to the bottom end of the hydraulic push rod. An L-shaped fixed platform 42 is provided at the bottom end of the mounting plate 39. Two protrusions 43 are provided at the top of the L-shaped fixed platform 42. An arc plate 44 is provided between the two protrusions 43. The arc plate 44 and the triangular mounting plate 41 are both located within the active range of the movable ring 36 on the rotating ring 28.

[0037] When the rotary motor 26 rotates, it causes the rotating ring 28 to rotate. As the rotating ring 28 rotates, it simultaneously drives the four drive shafts 31 to perform circular motion. During the movement of the four drive shafts 31, a vertical mounting plate 38 contacts the arc plate 44. When the vertical mounting plate 38 moves to the highest point on the arc plate 44, it will drive the movable ring 36 and the drive shaft 31 to move upward, so that the locking block 32 at the top of the drive shaft 31 is inserted into the slot at the bottom of the rotating shaft 23. This facilitates the rotation of the drive shaft 31 and the screwdriver head 37 during the rotation of the rotating shaft 23 to tighten the screws on the car headrest. At this time, the triangular mounting plate 41 is located at the top of the movable ring 36. It can be pushed downward by the hydraulic push rod, so that the triangular mounting plate 41 pushes the movable ring 36 downward, so that the locking block 32 is pulled out of the slot, making it convenient to replace the next screwdriver head 37.

[0038] In use, the electrical components on the operating table 1 are first activated by an external power source. The car headrest is placed on the top of the material placement platform 13. With the cooperation of the slide rail 3, the four screwdriver heads 37 below the rotating ring 28 each pick up a screw from the screw feeder 9. The rotating motor 26 rotates, allowing the mounting plate 38 at the bottom of the movable ring 36 to contact the highest point of the arc plate 44. At this time, the top locking block 32 of the drive shaft 31 on the movable ring 36 will insert into the bottom locking groove of the rotating shaft 23. The rotating motor 22 then rotates to drive the rotating shaft 23, drive shaft 31, and screwdriver heads 37 to tighten or tighten the screw. After tightening or tightening is completed, the hydraulic push rod pushes the triangular mounting plate 41 downward, causing the locking block 32 to be pulled out of the locking groove, allowing the next screwdriver head 37 to be replaced.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A car headrest screw gripping robot, comprising an operating table (1), characterized in that: A fixed frame (2) is provided on the operating table (1). A screw feeder (9) is provided in front of the fixed frame (2). A feeding assembly (8) is provided in front of the screw feeder (9). The screw feeder (9) is fixedly installed on the top of the operating table (1). A sliding plate (4) is provided directly above the screw feeder (9). Two slide rails (3) are provided at the bottom of the sliding plate (4). A U-shaped frame (5) is fixedly installed at the top of the sliding plate (4). A drag chain (6) is provided inside the U-shaped frame (5). A screw tightening assembly (7) is connected to one end of the drag chain (6). The screw tightening assembly (7) includes a vertical plate (14). A fixed frame (15) is provided on the front end face of the vertical plate (14). A rotating screw (16) is provided inside the fixed frame (15). A lifting block (17) is movably fitted on the outer wall of the rotating screw (16). A groove is provided on the front end face of the lifting block (17), and a second rotating motor (18) is provided in the groove. A sleeve ring (19) is connected to the outer wall of the output shaft of the second rotating motor (18). The sleeve ring (19) is fixedly fitted on the outer wall of the electric push rod (20). A stabilizing platform (21) is provided at the bottom end of the electric push rod (20). A third rotating motor (22) is provided at the bottom end of the stabilizing platform (21). A rotating shaft (23) is connected to the bottom end of the output shaft of the third rotating motor (22). A mounting platform (24) is movably fitted on the outer wall of the rotating shaft (23). A telescopic connecting rod (10) is provided between the top of the mounting platform (24) and the bottom of the stabilizing platform (21). The telescopic connecting rod (10) is connected to the stabilizing platform (21) and the mounting platform (24) via a rotating shaft. A mounting rod (25) is installed at the bottom of the mounting platform (24). A rotary motor (26) is provided at the bottom of the mounting rod (25). A connecting plate (27) is connected to the outer wall of the output shaft of the rotary motor (26). A rotating ring (28) is connected to the outer wall of the connecting plate (27). A fixing ring (29) is provided around the rotating ring (28). The top of the fixing ring (29) is connected to the bottom of the mounting platform (24) via two connecting columns (30). The rotating ring (28) is provided with... There are four through holes, each containing a drive shaft (31). Each of the four drive shafts (31) has a screwdriver head (37) at its bottom end and a locking block (32) at its top end. A collar (33) is movably fitted on the outer wall of the drive shaft (31). Two limiting blocks (34) are fixedly connected to the outer wall of the collar (33). A positioning frame (35) is movably fitted on the outer wall of each limiting block (34), and the positioning frame (35) is fixedly installed on the top end of the rotating ring (28). A movable ring (36) is movably fitted on the outer wall of the drive shaft (31). A limiting rod (45) is provided at the top end of the movable ring (36), and a mounting plate (38) is provided at the bottom end of the movable ring (36).A mounting plate (39) is fixedly connected to the outer wall of the fixing ring (29). A horizontal plate (40) is provided on the side wall of the mounting plate (39). A triangular mounting plate (41) is provided at the bottom end of the horizontal plate (40). An L-shaped fixing platform (42) is provided at the bottom end of the mounting plate (39). Two protrusions (43) are provided at the top end of the L-shaped fixing platform (42). An arc-shaped plate (44) is provided between the two protrusions (43). A slot is provided at the bottom end of the rotating shaft (23), and the length, width, and height dimensions of the slot are the same as those of the locking block (32).

2. The automotive headrest screw gripping robot according to claim 1, characterized in that: The material placement assembly (8) includes two vertical mounting blocks (11), a rotating motor (12) is arranged between the two vertical mounting blocks (11), and a material placement platform (13) is arranged on the outer wall of the output shaft of the rotating motor (12).

3. The automotive headrest screw gripping robot according to claim 1, characterized in that: The bottom end of the rotating ring (28) is provided with four lifting grooves, and the diameter of the lifting grooves is the same as the diameter of the limiting rod (45). The top of the limiting rod (45) extends into the lifting groove at the bottom end of the rotating ring (28).

4. The automotive headrest screw gripping robot according to claim 1, characterized in that: The telescopic connecting rod (10) consists of a column and a telescopic column. The column is a hollow column with an opening at the bottom. The top of the telescopic column extends into the inner cavity of the column through the opening at the bottom. Several arc-shaped grooves are vertically arranged on the inner wall of the column, and two spring plungers matching the arc-shaped grooves are arranged on the outer wall of the telescopic column.

5. The automotive headrest screw gripping robot according to claim 1, characterized in that: The inner wall of the collar (33) is provided with a circular groove, and two sliders are slidably installed in the circular groove, and the sliders are fixedly connected to the outer wall of the drive shaft (31).

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