Eight-axis automatic screw locking machine mechanism for side edge of cylinder

Abstract

This invention discloses an eight-axis automatic screw-locking machine mechanism for the side of a cylinder. It includes a fixed plate mounted at the center of a frame via a crossbeam. The fixed plate has a positioning stop at its center, two drag rods at its lower part, and several head clamping modules on the outer side of the positioning stop. An auxiliary clamping module is mounted on the fixed plate along its central axis, and eight tightening modules are also mounted along the central axis of the fixed plate. Eight feeders are mounted on the side of the frame, with the feeder outlets connected to the feed inlets of the tightening modules via air pipes. A PLC controller is mounted on the side of the frame, with its output connected to the inputs of the head clamping modules, auxiliary clamping modules, and tightening modules. This invention utilizes a horizontal cylinder loading and unloading mechanism, simultaneously positioning the cylinder from the top and outer wall, ensuring accurate and precise positioning. This reduces assembly space, facilitates product loading and unloading, and improves work efficiency.

Description

Technical Field

[0001] This invention relates to the field of screw self-locking technology, and more specifically to an eight-axis automatic screw-locking machine mechanism for the side of a cylinder. Background Technology

[0002] The assembly of screws around the drum is a common manufacturing process in the home appliance industry. For example, some washing machine drums require screws to be fastened around the drum.

[0003] Currently, the most commonly used automatic screw fastening mechanism is the multi-axis automatic screw fastening machine. However, the mainstream automatic screw fastening machines on the market adopt a cylindrical vertical mechanism, which requires the cylinder to be placed vertically on the automatic screw fastening machine for operation. Since the automatic screw fastening mechanism is a vertical structure, it will occupy the space for movement. After being arranged around the machine, it will result in a large footprint. In addition, the loading and unloading of the cylinder requires a mechanical mechanism, which is cumbersome and has low work efficiency. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an eight-axis automatic screw fastening machine mechanism for the side of a cylinder, so as to solve the problems in the background art. The cylinder is in a horizontal shape for picking and placing, which reduces the floor space of the equipment and allows for the free choice of manual or machine picking and placing of workpieces.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows.

[0006] The eight-axis automatic screw fastening machine mechanism on the side of the cylinder includes a fixed plate set at the center of the frame via a crossbeam. The fixed plate has a positioning stop at its center for positioning the cylinder head. Two horizontally aligned drag rods on the lower part of the fixed plate support the cylinder. Several head clamping modules for pressing the inner side of the cylinder head are located outside the positioning stop. Several auxiliary clamping modules for fixing the outer end of the cylinder are arranged along the central axis of the fixed plate. Eight tightening modules corresponding to the screw holes on the cylinder are arranged along the central axis of the fixed plate. Eight feeders for feeding the corresponding tightening modules are located on the side of the frame. The discharge end of the feeders is connected to the feed end of the tightening modules via an air pipe. A PLC controller is located beside the frame, and the output of the PLC controller is connected to the input ends of the head clamping modules, auxiliary clamping modules, and tightening modules, respectively.

[0007] To further optimize the technical solution, a groove is provided on the outer side of the positioning stop, and the head pressing module is located in the groove.

[0008] To further optimize the technical solution, the head clamping module includes a pressure block set at the positioning stop groove via connecting blocks on both sides. The middle part of the pressure block is hinged to the top of the connecting block, and the bottom end of the connecting block is set on the fixed plate. A fourth cylinder for driving the pressure block is set on the back of the fixed plate. The telescopic rod of the fourth cylinder passes through the fixed plate and is hinged to the top of the inner side of the pressure block. The input end of the fourth cylinder is connected to the output end of the PLC controller.

[0009] To further optimize the technical solution, the auxiliary clamping module includes an L-shaped mounting plate arranged along the central axis of the fixed plate, a third cylinder arranged at the upper end of the L-shaped mounting plate, and a clamping block facing inward and used to clamp the outer wall of the cylinder at the end of the telescopic rod of the third cylinder. The input end of the third cylinder is connected to the output end of the PLC controller.

[0010] To further optimize the technical solution, the tightening module includes an L-shaped fixed seat mounted on a fixed plate. A movable seat is located inside the fixed seat, and a gun head is located inside the movable seat. A tightening motor for driving the internal screw of the gun head to rotate is mounted on the movable seat. A gun head feed end is inclinedly mounted on the side end of the gun head and is connected to the discharge end of the feeder through an air pipe. A first cylinder for driving the movable seat to move back and forth is located outside the fixed seat. The input ends of the tightening motor and the first cylinder are connected to the output end of the PLC controller.

[0011] To further optimize the technical solution, the movable seat includes a first movable seat arranged sequentially inside the fixed seat and a second movable seat arranged on the first movable seat. A second cylinder for driving the second movable seat to move back and forth is arranged on the outer side of the first movable seat. The gun head is arranged on the inner side of the second movable seat. The input end of the second cylinder is connected to the output end of the PLC controller.

[0012] To further optimize the technical solution, the tightening cylinder is connected to the screw inside the gun head via a reducer.

[0013] To further optimize the technical solution, the frame is set on the ground by outriggers, and the outriggers are equipped with adjusting bolts to adjust the height of the outriggers.

[0014] To further optimize the technical solution, the bottom of the frame is equipped with four omnidirectional wheels for easy movement.

[0015] To further optimize the technical solution, an indicator light for indicating the working status is provided at the top of the frame, and the input end of the indicator light is connected to the output end of the PLC controller.

[0016] Due to the adoption of the above technical solutions, the technical progress achieved by this invention is as follows.

[0017] The present invention provides an eight-axis automatic screw fastening machine mechanism for the side of a cylinder. The cylinder is placed and picked up in a horizontal position. The cylinder is positioned simultaneously by the top and the outer wall, which ensures the accuracy and precision of the positioning. It reduces the assembly space and facilitates the picking and placing of products, thereby improving work efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention;

[0019] Figure 2 This is a structural schematic diagram of the tightening module described in this invention;

[0020] Figure 3 This is a schematic diagram of the auxiliary clamping module described in this invention;

[0021] Figure 4 This is a schematic diagram of the head clamping module described in this invention;

[0022] Figure 5 This is a schematic diagram of the feeder described in this invention.

[0023] The components include: 1. Frame, 11. Support legs, 12. Casters, 13. Indicator light, 2. Fixed plate, 3. Feeder, 31. Base, 32. Vibratory feeder, 33. Cutting plate, 34. Cutting bracket, 35. Switch button, 36. Discharge port, 37. Solenoid valve seat, 38. Material pipe, 39. Air source inlet, 4. Tightening module, 41. Fixed seat, 42. First cylinder, 43. First movable seat, 44. Second movable seat, 45. Second cylinder, 46. Tightening motor, 47. Reducer, 48. Gun head, 49. Gun head feed end, 5. Trailing rod, 6. Auxiliary clamping module, 61. L-shaped mounting plate, 62. Third cylinder, 63. Clamping block, 7. Head pressing module, 71. Fourth cylinder, 72. Connecting block, 73. Pressing block, 8. Positioning stop. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0025] The eight-axis automatic screw fastening machine mechanism on the side of the cylinder is combined with Figures 1 to 5 As shown, the assembly includes a frame 1, a fixed plate 2, a feeder 3, a tightening module 4, a drag bar 5, an auxiliary clamping module 6, a head clamping module 7, a positioning stop 8, and a PLC controller. The PLC controller is located on the side of the frame 1 and is used to implement automatic screw tightening operation.

[0026] The frame 1 is set on the ground. Four legs 11 are set at the bottom of the frame 1 to support the frame. Adjusting bolts are set on the legs 11 to adjust the height of the legs 11, thereby adjusting the level of the frame 1.

[0027] Four casters 12 are provided at the bottom of the frame 1 to facilitate movement of the frame. When moving, rotate the adjusting bolts on the outriggers to shorten the outriggers and allow the casters to touch the ground. At this time, the frame can be moved by the casters. After moving to the position, rotate the adjusting bolts to allow the outriggers to touch the ground and release the casters.

[0028] The fixed plate 2 is set at the center of the frame 1 via a crossbeam, and the positioning stop 8 is set at the center of the fixed plate 2 to position the head of the cylinder. Two drag rods 5 are set on the fixed plate 2 below the positioning stop 8 respectively. The two drag rods are on the same horizontal line and located on the left and right sides of the positioning stop 8. The circular cylinder is positioned by the two drag rods.

[0029] The outer side of the positioning stop 8 is provided with three grooves, and the head clamping module 7 is set in the groove of the positioning stop 8 to clamp the inner side of the cylinder head.

[0030] The head clamping module 7 includes a clamping block 73 and a fourth cylinder 71. Connecting blocks 72 are hinged to both sides of the middle part of the clamping block 73. The bottom end of the connecting block 72 is set on the fixed plate 2 at the groove of the positioning stop 8. The fourth cylinder 71 is set on the back of the fixed plate 2. The end of the telescopic rod of the fourth cylinder passes through the fixed plate and is hinged to the top of the inner side of the clamping block 73. It is used to drive the clamping block 73 to rotate along the connecting block to achieve clamping of the inner side of the cylinder head. The input end of the fourth cylinder is connected to the output end of the PLC controller.

[0031] When fixing the cylinder head, the cylinder head is fitted inward onto the positioning stop 8, and the lower end is placed on the drag rod. At this time, the fourth cylinder drives the telescopic rod forward, pushing the rear part of the pressure block 73 to move outward. Under the action of the rotating shaft of the middle connecting block, the front part of the pressure block moves inward, pressing against the inner side of the cylinder head, thus fixing the inner side of the cylinder head.

[0032] Four auxiliary clamping modules 6 are provided, which are respectively arranged along the central axis of the fixed plate 2. The four auxiliary clamping modules are arranged in pairs opposite each other to fix the outer end of the cylinder from four directions.

[0033] The auxiliary clamping module 6 includes an L-shaped mounting plate 61 arranged along the central axis of the fixed plate 2. A third cylinder 62 is provided at the upper end of the L-shaped mounting plate 61. A clamping block 63 is provided at the end of the telescopic rod of the third cylinder. The clamping block 63 is arranged facing inward and is used to press against the outer wall of the cylinder. The input end of the third cylinder is connected to the output end of the PLC controller.

[0034] When fixing the outer wall of the cylinder, after placing the inner side of the cylinder onto the positioning stop, the lower end is placed on the drag bar. The third cylinder drives the clamping block to move forward, and the four clamping blocks move forward at the same time to clamp the outer wall of the cylinder.

[0035] Eight tightening modules 4 are set up, each along the central axis of the fixed plate 2, corresponding to the screw holes of the cylinder, and are used to screw screws into the bolts of the cylinder.

[0036] The tightening module 4 includes a fixed seat 41 mounted on the fixed plate 2. The fixed seat 41 has an L-shaped structure. A first movable seat 43 and a second movable seat 44 are located on the inner side of the fixed seat 41. The second movable seat is mounted on the first movable seat. A nozzle 48 is located on the inner side of the second movable seat 44. A nozzle feed end 49 is located on the side end of the nozzle. The nozzle feed end 49 is inclined and communicates with the nozzle for feeding material into it. The nozzle feed end 49 is connected to the discharge end of the feeder 3 via an air pipe. A tightening motor 46 is located on the outer side of the first movable seat 43. The motor shaft of the tightening motor 46 is connected to the inner screw of the nozzle 48 via a reducer 47. The tightening motor drives the inner screw of the nozzle to rotate, thereby screwing the screw into the outer wall of the cylinder.

[0037] A first cylinder 42 is provided on the outer side of the fixed seat 41. The telescopic rod of the first cylinder is connected to the outer side of the first movable seat and is used to drive the first movable seat to move back and forth.

[0038] A second cylinder 45 is provided on the outer side of the first movable seat 43. The telescopic rod of the second cylinder passes through the first movable seat and is connected to the outer side of the second movable seat to drive the second movable seat to move back and forth.

[0039] When screwing the screw into the outer wall of the cylinder, after the cylinder is fixed, the first cylinder drives the first movable seat to move forward. The first movable seat drives the second movable seat to move forward. When the gun head touches the outer wall of the cylinder, the first cylinder stops moving, and the second cylinder and the tightening motor move. The tightening motor drives the screw inside the gun head to rotate, and the screw enters the inside of the gun head from the feed port. The screw rotates through the bolt. During the rotation of the screw, the second cylinder pushes the second movable seat to move forward. The speed at which the second movable seat moves is consistent with the speed at which the gun head screws in, ensuring that the screw can be screwed into the outer wall of the cylinder at a uniform speed.

[0040] The feeder 3 is also set to eight, which are used to feed the corresponding tightening modules. It includes a base 31, a vibratory plate 32 is set on the base 31, a vibratory motor is set at the bottom of the vibratory plate 32 to drive the vibratory plate to vibrate, a material tube 38 is set below the outlet of the vibratory plate, and a cutting plate 33 is set above the material tube through a cutting bracket 34 to feed the screw at the outlet of the vibratory plate into the material tube 38. The end of the material tube 38 is set with an outlet 36, which is connected to the feed end 49 of the gun head through an air pipe. The base 31 above the material tube 38 is set with a solenoid valve seat 37 that communicates with the material tube to magnetically attract the screw at the inlet of the material tube 38 to the outlet.

[0041] A cylinder is installed on the cutting support 34. The cylinder is connected to the bottom of the cutting plate and is used to drive the cutting plate to move up and down to cut the material. The input terminals of the vibration motor and the cylinder are respectively connected to the input terminals of the PLC controller. The PLC controller controls the material output and cutting.

[0042] The feed pipe 38 is connected to an air pipe near the discharge port 36, which is used to blow air into the discharge port. The screw at the discharge port is fed into the feed end 49 of the gun head. The base 31 is provided with a source inlet 39, which is used to connect to the air pump to provide air. The input end of the air pump is connected to the output end of the PLC controller.

[0043] The base 1 is equipped with a switch button to start and stop the feeder 3.

[0044] The top of frame 1 is equipped with an indicator light 13 to indicate the working status. The input terminal of the indicator light is connected to the output terminal of the PLC controller. The indicator light is a two-color indicator light, with green indicating that the work is in progress and red indicating that the work is completed. The two-color indicator light allows the staff to clearly know the working status.

[0045] In operation, the head of the cylinder is placed inward on the positioning stop, and the lower end of the cylinder is placed on the drag bar. At this time, the green indicator light illuminates. The fourth cylinder pushes the pressure block to press the inner side of the head of the cylinder, and the third cylinder pushes the clamping block forward to clamp and fix the outer wall of the cylinder. The first cylinder pushes the gun head forward. When it reaches the outer wall of the cylinder, the first cylinder stops. The second cylinder and the tightening motor operate simultaneously. During the screwing into the cylinder, the second cylinder pushes the gun head forward, realizing that the gun head moves forward while screwing into the outer wall of the cylinder. After the screw is screwed in, the red indicator light illuminates, the second and first cylinders reset, and the third and fourth cylinders release the cylinder. At this time, the operator can remove the cylinder to proceed with the operation of the next cylinder.

Claims

1. An eight-axis automatic screw fastening machine mechanism for the side of a cylinder, characterized in that: The frame (1) includes a fixed plate (2) set at the center of the frame (1) via a crossbeam. The fixed plate (2) has a positioning stop (8) at its center for positioning the head of the cylinder. The lower part of the fixed plate (2) has two drag rods (5) on the same horizontal line, located on the left and right sides of the positioning stop for supporting the cylinder. The positioning stop (8) has several head clamping modules (7) for clamping the inner side of the cylinder head. The fixed plate (2) has several auxiliary clamping modules (6) for fixing the outer end of the cylinder along the central axis. The fixed plate (2) has eight tightening modules (4) corresponding to the screw holes of the cylinder. The side of the frame (1) has eight feeders (3) for feeding the corresponding tightening modules (4). The discharge end of the feeder (3) is connected to the feed end of the tightening module (4) through an air pipe. The frame (1) has a PLC controller on its side. The output end of the PLC controller is connected to the input end of the head clamping module, the auxiliary clamping module and the tightening module respectively. The tightening module (4) includes an L-shaped fixed seat (41) set on a fixed plate (2). A movable seat is set on the inner side of the fixed seat (41). A gun head (48) is set on the inner side of the movable seat. A tightening motor (46) for driving the screw inside the gun head to rotate is set on the movable seat. A gun head feed end (49) is inclinedly set on the side end of the gun head (48). The gun head feed end is connected to the discharge end of the feeder (3) through an air pipe. A first cylinder (42) for driving the movable seat to move back and forth is set on the outer side of the fixed seat (41). The input ends of the tightening motor and the first cylinder are connected to the output end of the PLC controller. The movable seat includes a first movable seat (43) arranged in sequence inside the fixed seat (41) and a second movable seat (44) arranged on the first movable seat. A second cylinder (45) for driving the second movable seat to move back and forth is arranged on the outside of the first movable seat (43). The gun head (48) is arranged inside the second movable seat. The input end of the second cylinder is connected to the output end of the PLC controller. The outer side of the positioning stop (8) is provided with a groove, and the head pressing module (7) is located in the groove; The head pressing module (7) includes a pressing block (73) set at the groove of the positioning stop (8) by connecting blocks (72) on both sides. The middle part of the pressing block (73) is hinged to the top of the connecting block. The bottom end of the connecting block (72) is set on the fixed plate (2). The back of the fixed plate (2) is provided with a fourth cylinder (71) for driving the pressing block. The telescopic rod of the fourth cylinder (71) passes through the fixed plate and is hinged to the top of the inner side of the pressing block (73). The input end of the fourth cylinder is connected to the output end of the PLC controller. The feeder (3) includes a base (31), a vibratory plate (32) is provided on the base (31), a vibratory motor is provided at the bottom of the vibratory plate (32) to drive the vibratory plate to vibrate, a material tube (38) is provided below the outlet of the vibratory plate, a cutting plate (33) is provided above the material tube through a cutting bracket (34) to feed the screw at the outlet of the vibratory plate into the material tube (38), an outlet (36) is provided at the end of the material tube (38), the outlet is connected to the feed end (49) of the gun head through an air pipe, and an electromagnetic valve seat (37) connected to the material tube is provided on the base (31) above the material tube (38) to magnetically attract the screw at the inlet of the material tube (38) to the outlet.

2. The eight-axis automatic screw fastening machine mechanism for the side of the cylinder according to claim 1, characterized in that: The auxiliary clamping module (6) includes an L-shaped mounting plate (61) arranged along the central axis of the fixed plate (2). A third cylinder (62) is provided at the upper end of the L-shaped mounting plate (61). A clamping block (63) facing inward and used to clamp the outer wall of the cylinder is provided at the end of the telescopic rod of the third cylinder. The input end of the third cylinder is connected to the output end of the PLC controller.

3. The eight-axis automatic screw fastening machine mechanism for the side of the cylinder according to claim 1, characterized in that: The tightening motor (46) is connected to the screw inside the gun head (48) via a reducer (47).

4. The eight-axis automatic screw fastening machine mechanism for the side of the cylinder according to claim 1, characterized in that: The frame (1) is set on the ground by support legs (11), and the support legs are equipped with adjusting bolts to adjust the height of the support legs.

5. The eight-axis automatic screw fastening machine mechanism for the side of the cylinder according to claim 1, characterized in that: The bottom of the frame (1) is provided with four casters (12) for easy movement.

6. The eight-axis automatic screw fastening machine mechanism for the side of the cylinder according to claim 1, characterized in that: The top of the frame (1) is provided with an indicator light (13) for indicating the working status, and the input end of the indicator light is connected to the output end of the PLC controller.

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