Automatic silicon steel sheet screw fastening device and fastening method

Abstract

The invention relates to the technical field of threaded tooth sockets, in particular to an automatic fastening device and method for silicon steel sheet screws. The invention provides an automatic silicon steel sheet screw fastening device which comprises a workbench, a three-dimensional motion platform is installed on the workbench, two moving frames are installed on the three-dimensional motion platform, L-shaped barrels are connected to the moving frames and provided with vertical storage channels and transverse discharging channels, the rear ends of the discharging channels communicate with the storage channels, and the rear ends of the discharging channels communicate with the discharging channels. A discharging opening is formed in the bottom of the front end of the discharging channel. A three-dimensional motion platform is controlled to enable a moving frame and an L-shaped barrel to move in the three-dimensional direction, a discharging opening is aligned with a threaded hole, a pushing rod pushes a threaded tooth sleeve to the discharging opening, a lifting plate, a movable rod and a fastening block descend, a transverse hook end is clamped into a clamping groove under cooperation of a spring, the fastening block drives the threaded tooth sleeve to rotate while descending, and the threaded tooth sleeve is clamped into the discharging opening. And the threaded tooth sleeves are screwed into the threaded holes of the silicon steel sheets, automatic feeding and threaded tooth sleeve mounting can be achieved, and the working efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field of threaded sockets, and in particular to an automated device and method for fastening silicon steel sheet screws. Background Art

[0002] Threaded sleeves are spiral coils precisely formed from a high-strength, high-precision, smooth-surfaced cold-rolled diamond-shaped stainless steel wire. They are high-precision concentric bodies of internal and external threads and can form standard threads. Threaded sleeves are often used to enhance the strength of the internal threads of products, repair damaged internal threads, and use threaded sleeves to convert threaded holes.

[0003] When parts need to be installed on the mover of the linear motor by means of screws and threaded sleeves, the threaded sleeve is first placed on the threaded hole of the silicon steel sheet, and then the threaded sleeve is manually screwed into the threaded hole using tools. However, a large number of threaded sleeves need to be installed, and the threaded sleeves have to be continuously taken out and installed one by one, which results in low work efficiency. Therefore, it is urgent to develop an automated silicon steel sheet screw tightening device and tightening method that can automatically screw in the threaded sleeve to solve the above problems. Summary of the invention

[0004] In view of this, the present invention provides a silicon steel sheet screw fastening automation device and a fastening method.

[0005] The technical solution of the present invention is: a silicon steel sheet screw tightening automation device, including a workbench, a three-dimensional motion platform is installed on the workbench, two mobile frames are installed on the three-dimensional motion platform, and L-shaped cylinders are connected to the mobile frames. The L-shaped cylinder has a vertical storage channel and a horizontal discharge channel. The rear end of the discharge channel is connected to the storage channel, and a discharge port is provided at the bottom of the front end of the discharge channel. The top of the front end of the discharge channel is connected to a cylinder, a movable rod is provided in the cylinder, and a fastening block that slides up and down is provided at the bottom of the movable rod. A spring is connected between the fastening block and the movable rod, and a push rod is slidably connected in the discharge channel. A control mechanism for controlling the movable rod and a driving mechanism for driving the push rod are provided on the mobile frame.

[0006] As a preferred technical solution of the present invention, a groove is opened inside the bottom end of the movable rod, a sliding part cooperating with the groove is provided on the fastening block, and a clamping groove is provided at the bottom of the fastening block for clamping the horizontal hook end of the threaded sleeve.

[0007] As a preferred technical solution of the present invention, the three-dimensional motion platform includes an electric slide rail one, a translation seat, an electric slide rail two and a bidirectional electric slide rail. The electric slide rail one is connected to the workbench, the electric slide rail one is installed with a translation seat, the translation seat is installed with an electric slide rail two, the electric slide rail two is installed with a bidirectional electric slide rail, and the movable frame is installed on the bidirectional electric slide rail.

[0008] As a preferred technical solution of the present invention, the control mechanism includes a linear motor, a lifting plate and a reduction motor. The movable frame is slidably connected to a lifting plate driven by a linear motor. The movable rod is rotatably connected to the lifting plate. The lifting plate is connected to a reduction motor for driving the movable rod to rotate.

[0009] As a preferred technical solution of the present invention, the driving mechanism includes an electric push rod, an opening is provided at the rear end of the discharging channel, the push rod extends from the opening, the electric push rod is connected to the movable frame, the telescopic rod of the electric push rod is connected to a lifting block, and a hinged rod is rotatably connected between the lifting block and the push rod.

[0010] As a preferred technical solution of the present invention, the silicon steel sheet screw tightening automation device also includes a glue discharge cylinder, which is fixedly connected to the L-shaped cylinder, a glue inlet pipe is installed in the middle of the glue discharge cylinder, and an extrusion block located above the glue inlet pipe is slidably connected inside the glue discharge cylinder, and a connecting rod is connected between the extrusion block and the lifting plate.

[0011] As a preferred technical solution of the present invention, the silicon steel sheet screw tightening automation device also includes a placing mechanism, which includes a square frame, the square frame is connected to the workbench, two sliding rods for placing silicon steel sheets are slidably connected to the square frame, two rotating rods with screw segments are rotatably connected to the square frame, and the two sliding rods are respectively threadedly connected to the two rotating rods.

[0012] As a preferred technical solution of the present invention, the silicon steel sheet screw tightening automation device also includes a limiting mechanism, which includes a fixed rod, the fixed rod is connected to the movable frame, and an electric push rod 2 is installed at the bottom end of the fixed rod, and the telescopic rod of the electric push rod 2 is connected to a limiting plate for limiting the silicon steel sheet.

[0013] A method for fastening a silicon steel sheet screw, comprising the following steps:

[0014] S1: Rotate the rotating rod to make the slide bar slide, thereby adjusting the distance between the two slide bars and placing the silicon steel sheet on the two slide bars;

[0015] S2: Control the three-dimensional motion platform to move the mobile frame and the L-shaped cylinder in three-dimensional directions, align the discharge port with the threaded hole, and place the threaded sleeve into the storage channel;

[0016] S3: The push rod slides backward, and the threaded sleeve at the bottom leaves the storage channel and enters the discharge channel. The push rod slides forward again and pushes the threaded sleeve in the discharge channel to the discharge port, and the other threaded sleeves are blocked by the push rod;

[0017] S4: The lifting plate, the movable rod and the fastening block descend. If the cross hook end is aligned with the card slot, the cross hook end is stuck in the card slot. If the cross hook end is not aligned with the card slot, the spring is compressed, and the reduction motor is controlled to drive the movable rod and the fastening block to rotate. When the card slot is aligned with the cross hook end, the spring is reset, and the cross hook end is also stuck in the card slot.

[0018] S5: The lifting plate, the movable rod and the fastening block continue to descend, and at the same time, the reduction motor is controlled to drive the movable rod and the fastening block to continue to rotate, and the fastening block drives the threaded sleeve at the discharge port to descend and rotate, thereby automatically screwing the threaded sleeve into the threaded hole of the silicon steel sheet;

[0019] S6: The lifting plate, movable rod and fastening block rise and reset, and the three-dimensional motion platform is controlled to align the bottom end of the rubber cylinder with the threaded hole with the threaded sleeve. The descending extrusion block squeezes the glue in the rubber cylinder into the threaded hole, and the rubber cylinder leaves the threaded hole. Finally, the screw is screwed into the threaded sleeve with the glue squeezed.

[0020] Beneficial effects: 1. Control the three-dimensional motion platform to make the movable frame and the L-shaped cylinder move in three dimensions, align the discharge port with the threaded hole, push the threaded sleeve to the discharge port, and the lifting plate, movable rod and fastening block descend. With the cooperation of the spring, the cross hook end is inserted into the card slot, and the fastening block drives the threaded sleeve to descend and rotate at the same time. The threaded sleeve is screwed into the threaded hole of the silicon steel sheet, which can automatically load and install the threaded sleeve with high work efficiency.

[0021] 2. Control the three-dimensional motion platform to move the mobile frame and the glue cylinder. The bottom end of the glue cylinder is aligned with the threaded hole with the threaded sleeve. The extrusion block descends and squeezes the glue in the glue cylinder into the threaded hole. After the screw is screwed into the threaded sleeve, the glue fills the gap between the threaded hole, the threaded sleeve and the screw, effectively preventing the screw from loosening and improving the tightness.

[0022] 3. When the mobile frame moves, it drives the fixed rod, the second electric push rod and the limit plate to move together. When the discharge port is located directly above the threaded hole, the two limit plates limit the silicon steel sheet to prevent the position of the silicon steel sheet from shifting. The second electric push rod is controlled to drive the limit plate to move, and the relative position of the limit plate and the fixed rod can be adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 It is a schematic structural diagram of the three-dimensional motion platform and its components of the present invention.

[0025] Figure 3 It is a schematic structural diagram of the three-dimensional motion platform and the mobile frame of the present invention.

[0026] Figure 4 For the present invention Figure 2Schematic diagram of the structure after the three-dimensional motion platform is hidden.

[0027] Figure 5 For the present invention Figure 4 Schematic diagram of the structure after the middle limit mechanism is hidden.

[0028] Figure 6 For the present invention Figure 5 A schematic diagram of the structure from another perspective.

[0029] Figure 7 For the present invention Figure 5 Side view of the L-shaped cylinder, round cylinder and dispensing cylinder after being cut open.

[0030] Figure 8 For the present invention Figure 7 Schematic diagram of the structure of the movable frame, L-shaped cylinder and cylinder.

[0031] Fig. 9 It is a schematic diagram of the connection relationship between the movable rod and the fastening block of the present invention, wherein the movable rod is cut open.

[0032] Fig.10 It is a top view of the workbench and placement mechanism of the present invention.

[0033] Fig.11 It is a schematic diagram of the connection relationship of the limiting mechanism of the present invention.

[0034] Among them: 1- workbench, 2- three-dimensional motion platform, 21- electric slide rail 1, 22- translation seat, 23- electric slide rail 2, 24- two-way electric slide rail, 3- mobile frame, 4- L-shaped cylinder, 40- threaded sleeve, 401- horizontal hook end, 41- storage channel, 42- discharge channel, 43- opening, 44- discharge port, 5- cylinder, 6- movable rod, 61- linear motor, 62- lifting plate , 63-reduction motor, 7-fastening block, 71-sliding part, 72-slot, 8-push rod, 81-electric push rod one, 82-lifting block, 83-hinge rod, 9-discharge cylinder, 91-inlet hose, 92-extrusion block, 93-connecting rod, 101-frame, 102-slide rod, 103-rotating rod, 104-screw segment, 111-fixed rod, 112-electric push rod two, 113-limiting plate. DETAILED DESCRIPTION

[0035] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, but is not intended to limit the present invention.

[0036] Example 1: A silicon steel sheet screw fastening automation device, reference Figure 1-Figure 9, including a workbench 1, a three-dimensional motion platform 2, a mobile frame 3, an L-shaped cylinder 4, a cylinder 5, a movable rod 6, a control mechanism, a fastening block 7, a push rod 8 and a driving mechanism. A three-dimensional motion platform 2 is installed on the top of the workbench 1, and two mobile frames 3 are installed on the three-dimensional motion platform 2. The three-dimensional motion platform 2 includes an electric slide rail 1 21, a translation seat 22, an electric slide rail 2 23 and a bidirectional electric slide rail 24. The electric slide rail 1 21 is connected to the top of the workbench 1, and a translation seat 22 is installed on the electric slide rail 1 21. The translation seat 22 is installed on the electric slide rail 23, and the bidirectional electric slide rail 24 is installed on the electric slide rail 23. The mobile frame 3 is installed on the bidirectional electric slide rail 24; the front side of the mobile frame 3 is fixedly connected with an L-shaped cylinder 4, and the L-shaped cylinder 4 has a vertical A storage channel 41 and a horizontal discharge channel 42, the top of the rear end of the discharge channel 42 is connected to the storage channel 41, a discharge port 44 is provided at the bottom of the front end of the discharge channel 42, the top of the front end of the discharge channel 42 is connected to a cylinder 5, a movable rod 6 is provided in the cylinder 5, a fastening block 7 sliding up and down is provided at the bottom of the movable rod 6, two grooves are opened inside the bottom of the movable rod 6, two sliding parts 71 cooperating with the grooves are provided on the fastening block 7, a clamping groove 72 is provided at the bottom of the fastening block 7, the clamping groove 72 is used to clamp the horizontal hook end 401 of the threaded sleeve 40; a spring is fixedly connected between the fastening block 7 and the movable rod 6, a pushing rod 8 is slidably connected in the discharge channel 42, and a control mechanism for controlling the movable rod 6 and a driving mechanism for driving the pushing rod 8 are provided on the movable frame 3.

[0037] refer to Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The control mechanism includes a linear motor 61, a lifting plate 62 and a reduction motor 63. The front part of the movable frame 3 is slidably connected to the lifting plate 62 driven by the linear motor 61. The top of the lifting plate 62 is bolted with the reduction motor 63. The top of the movable rod 6 is rotatably connected to the lifting plate 62, and the output shaft of the reduction motor 63 is connected to the top of the movable rod 6.

[0038] refer to Figure 4 , Figure 5 and Figure 7 The driving mechanism includes an electric push rod 81, a lifting block 82 and a hinged rod 83. An opening 43 is provided at the rear end of the discharge channel 42, and the push rod 8 extends out from the opening 43. An electric push rod 81 is bolted to the movable frame 3, and a lifting block 82 is connected to the telescopic rod of the electric push rod 81. A hinged rod 83 is rotatably connected between the lifting block 82 and the rear end of the push rod 8.

[0039] refer to Figure 4-Figure 7The silicon steel sheet screw tightening automation device also includes a glue discharge cylinder 9, a glue inlet pipe 91, an extrusion block 92 and a connecting rod 93. The front side of the L-shaped cylinder 4 is fixedly connected to the glue discharge cylinder 9, the middle part of the glue discharge cylinder 9 is installed with a glue inlet pipe 91, and the inside of the glue discharge cylinder 9 is slidably connected with an extrusion block 92 located above the glue inlet pipe 91, and a connecting rod 93 is fixedly connected between the extrusion block 92 and the lifting plate 62.

[0040] refer to Figure 1 and Fig.10 The silicon steel sheet screw fastening automation device also includes a placing mechanism, which includes a square frame 101, a slide bar 102 and a rotating rod 103. The square frame 101 is connected to the top of the workbench 1, and two parallel slide bars 102 are slidably connected to the square frame 101. The slide bar 102 is used to place the silicon steel sheet. The left and right parts of the square frame 101 are rotatably connected to the rotating rod 103. The rear end of the left rotating rod 103 and the front end of the right rotating rod 103 both have a screw segment 104. The rear slide bar 102 is threadedly connected to the screw segment 104 of the left rotating rod 103, and the front slide bar 102 is threadedly connected to the screw segment 104 of the right rotating rod 103.

[0041] In the first step, the silicon steel sheet has two slide grooves and threaded holes that cooperate with the threaded sleeve 40. The two rotating rods 103 are manually rotated, and the slide rod 102 slides in the front and rear directions under the action of the threaded connection, so as to adjust the distance between the two slide rods 102 so that the distance between the two slide rods 102 adapts to the slide groove position on the silicon steel sheet, and then the silicon steel sheet is placed on the two slide rods 102.

[0042] The second step is to control the three-dimensional motion platform 2 to make the mobile frame 3 move in the three-axis direction, driving the L-shaped cylinder 4, the cylinder 5 and the glue discharge cylinder 9 to move in the three-dimensional direction as a whole, so that the bottom surface of the L-shaped cylinder 4 contacts the top surface of the silicon steel sheet, and the discharge port 44 is aligned with the threaded hole up and down, and a row of threaded sleeves 40 are placed in the storage channel 41 of the L-shaped cylinder 4 in sequence.

[0043] The third step is to control the electric push rod 81 to drive the lifting block 82 to descend, and the push rod 8 slides backward under the transmission action of the hinged rod 83. The lowermost threaded sleeve 40 leaves the storage channel 41 under the action of gravity and enters the discharge channel 42; control the electric push rod 81 to drive the lifting block 82 to rise, and the push rod 8 slides forward under the transmission action of the hinged rod 83. The push rod 8 pushes a threaded sleeve 40 in the discharge channel 42 to the discharge port 44, and the other threaded sleeves 40 in the storage channel 41 will be blocked by the top of the push rod 8.

[0044] The fourth step is to control the linear motor 61 to drive the lifting plate 62 to descend, thereby driving the movable rod 6 and the fastening block 7 to descend. If the transverse hook end 401 of the threaded sleeve 40 is aligned with the slot 72 of the fastening block 7, the transverse hook end 401 will be directly inserted into the slot 72; if the transverse hook end 401 is not aligned with the slot 72, after the fastening block 7 contacts the transverse hook end 401, the movable rod 6 continues to descend, the spring is compressed, and then the reduction motor 63 is controlled to drive the movable rod 6 to rotate. The movable rod 6 drives the fastening block 7 to rotate together through the sliding part 71. When the slot 72 of the fastening block 7 is aligned with the transverse hook end 401, the spring is reset, causing the fastening block 7 to descend relative to the movable rod 6, and the transverse hook end 401 will also be inserted into the slot 72.

[0045] The fifth step is to control the linear motor 61 to drive the lifting plate 62, the movable rod 6 and the fastening block 7 to continue to descend, and at the same time control the reduction motor 63 to drive the movable rod 6 and the fastening block 7 to continue to rotate. Since the horizontal hook end 401 is inserted into the slot 72, the fastening block 7 drives the threaded sleeve 40 at the discharge port 44 to descend and rotate at the same time, and the threaded sleeve 40 is screwed into the threaded hole of the silicon steel sheet, so that the threaded sleeve 40 can be automatically loaded and installed.

[0046] The sixth step is to control the linear motor 61 to drive the lifting plate 62, the movable rod 6 and the fastening block 7 to rise and reset, and control the three-dimensional motion platform 2 to make the movable frame 3, the L-shaped cylinder 4 and the glue outlet cylinder 9 move backward as a whole, so that the bottom end of the glue outlet cylinder 9 is aligned with the threaded hole with the threaded sleeve 40; introduce a proper amount of glue into the glue outlet cylinder 9 through the glue inlet pipe 91. In this embodiment, the glue is metal AB glue, and control the linear motor 61 to drive the lifting plate 62 to descend, driving the connecting rod 93 and the extrusion block 92 to descend, and the extrusion block 92 squeezes the glue in the glue outlet cylinder 9 into the threaded hole; then control the three-dimensional motion platform 2 to make the glue outlet cylinder 9 leave the threaded hole, and finally manually use tools to break the horizontal hook end 401 of the threaded sleeve 40, and place the parts to be installed on the silicon steel sheet, screw the screw into the threaded sleeve 40 with glue, and fill the gap between the threaded hole, the threaded sleeve 40 and the screw with glue, effectively avoiding the loosening of the screw and improving the tightness, thereby completing the fastening of the silicon steel sheet screw.

[0047] Example 2: Based on Example 1, refer to Figure 1 , Figure 2 , Figure 4 and Fig.11 The silicon steel sheet screw tightening automation device also includes a limiting mechanism, which includes a fixed rod 111, an electric push rod 112 and a limiting plate 113. The two movable frames 3 are fixedly connected to the fixed rod 111 on the sides away from each other, and the bottom ends of the fixed rods 111 are bolted to the electric push rods 112. The telescopic rods of the electric push rods 112 are connected to the limiting plates 113, and the silicon steel sheets are limited by the two limiting plates 113.

[0048] When the movable frame 3 moves, it drives the fixed rod 111, the second electric push rod 112 and the limit plate 113 to move together. When the discharge port 44 is located directly above the threaded hole, the two limit plates 113 respectively contact the left and right sides of the silicon steel sheet, thereby limiting the silicon steel sheet to avoid the position of the silicon steel sheet being shifted when the threaded sleeve 40 is installed. By controlling the second electric push rod 112 to drive the limit plate 113 to move in the left and right directions, the relative position of the limit plate 113 and the fixed rod 111 can be adjusted to make the position of the limit plate 113 adapt to the position of the threaded hole on the silicon steel sheet.

[0049] A method for fastening a silicon steel sheet screw, comprising the following steps:

[0050] S1: Rotate the rotating rod 103 to slide the sliding rod 102, thereby adjusting the distance between the two sliding rods 102 and placing the silicon steel sheet on the two sliding rods 102;

[0051] S2: Control the three-dimensional motion platform 2 to move the moving frame 3 and the L-shaped cylinder 4 in three-dimensional directions, align the discharge port 44 with the threaded hole, and place a row of threaded sleeves 40 into the storage channel 41;

[0052] S3: the push rod 8 slides backward, and the lowest threaded sleeve 40 leaves the storage channel 41 and enters the discharge channel 42. The push rod 8 slides forward again, and the push rod 8 pushes the threaded sleeve 40 in the discharge channel 42 to the discharge port 44. The other threaded sleeves 40 are blocked by the push rod 8.

[0053] S4: The lifting plate 62, the movable rod 6 and the fastening block 7 are lowered. If the horizontal hook end 401 is aligned with the slot 72, the horizontal hook end 401 is inserted into the slot 72. If the horizontal hook end 401 is not aligned with the slot 72, the spring is compressed to control the reduction motor 63 to drive the movable rod 6 and the fastening block 7 to rotate. When the slot 72 of the fastening block 7 is aligned with the horizontal hook end 401, the spring is reset and the horizontal hook end 401 is also inserted into the slot 72.

[0054] S5: the lifting plate 62, the movable rod 6 and the fastening block 7 continue to descend, and at the same time, the reduction motor 63 is controlled to drive the movable rod 6 and the fastening block 7 to continue to rotate, and the fastening block 7 drives the threaded sleeve 40 at the discharge port 44 to descend and rotate, thereby automatically screwing the threaded sleeve 40 into the threaded hole of the silicon steel sheet;

[0055] S6: The lifting plate 62, the movable rod 6 and the fastening block 7 rise and reset, and the three-dimensional motion platform 2 is controlled to align the bottom end of the glue discharge tube 9 with the threaded hole with the threaded sleeve 40, and the descending extrusion block 92 squeezes the glue in the glue discharge tube 9 into the threaded hole, and the glue discharge tube 9 leaves the threaded hole, and finally the screw is screwed into the threaded sleeve 40 with the glue squeezed.

[0056] Those skilled in the art should understand that the above embodiments do not limit the present invention in any form, and any technical solutions obtained by equivalent replacement or equivalent transformation shall fall within the protection scope of the present invention.

Claims

1. A silicon steel sheet screw fastening automation device, comprising a workbench (1), characterized in that: A three-dimensional motion platform (2) is installed on the workbench (1), and two movable frames (3) are installed on the three-dimensional motion platform (2). The movable frames (3) are both connected with an L-shaped cylinder (4), and the L-shaped cylinder (4) has a vertical material storage channel (41) and a horizontal material discharge channel (42). The rear end of the material discharge channel (42) is connected with the material storage channel (41), and the front end bottom of the material discharge channel (42) is provided with a material discharge port (44). The front end top of the material discharge channel (42) is connected with a cylinder (5), and a movable rod (6) is provided in the cylinder (5). A fastening block (7) that slides up and down is provided at the bottom of the movable rod (6). A spring is connected between the fastening block (7) and the movable rod (6). A push rod (8) is slidably connected in the material discharge channel (42). A control mechanism for controlling the movable rod (6) and a driving mechanism for driving the push rod (8) are provided on the movable frame (3).

2. The automatic device for tightening screws of silicon steel sheets as claimed in claim 1, characterized in that: A groove is formed inside the bottom end of the movable rod (6), a sliding portion (71) cooperating with the groove is provided on the fastening block (7), and a clamping groove (72) is provided at the bottom of the fastening block (7), and the clamping groove (72) is used to clamp the horizontal hook end (401) of the threaded sleeve (40).

3. The automatic device for tightening screws of silicon steel sheets as claimed in claim 2, characterized in that: The three-dimensional motion platform (2) comprises an electric slide rail 1 (21), a translation seat (22), an electric slide rail 2 (23) and a bidirectional electric slide rail (24); the electric slide rail 1 (21) is connected to the workbench (1); the electric slide rail 1 (21) is mounted with a translation seat (22); the electric slide rail 2 (23) is mounted with a bidirectional electric slide rail (24); and the moving frame (3) is mounted on the bidirectional electric slide rail (24).

4. The automatic device for tightening screws of silicon steel sheets as claimed in claim 3, characterized in that: The control mechanism comprises a linear motor (61), a lifting plate (62) and a reduction motor (63); the movable frame (3) is slidably connected to the lifting plate (62) driven by the linear motor (61); the movable rod (6) is rotatably connected to the lifting plate (62); and the lifting plate (62) is connected to the reduction motor (63) for driving the movable rod (6) to rotate.

5. The automatic device for tightening screws of silicon steel sheets as claimed in claim 4, characterized in that: The driving mechanism comprises an electric push rod (81), an opening (43) is provided at the rear end of the discharge channel (42), the push rod (8) extends from the opening (43), the movable frame (3) is connected with the electric push rod (81), the telescopic rod of the electric push rod (81) is connected with a lifting block (82), and a hinged rod (83) is rotatably connected between the lifting block (82) and the push rod (8).

6. The automatic device for tightening screws of silicon steel sheets as claimed in claim 5, characterized in that: The silicon steel sheet screw fastening automation device also includes a glue discharge cylinder (9), the glue discharge cylinder (9) is fixedly connected to the L-shaped cylinder (4), a glue inlet pipe (91) is installed in the middle of the glue discharge cylinder (9), an extrusion block (92) located above the glue inlet pipe (91) is slidably connected inside the glue discharge cylinder (9), and a connecting rod (93) is connected between the extrusion block (92) and the lifting plate (62).

7. The automatic device for tightening screws of silicon steel sheets as claimed in claim 6, characterized in that: The silicon steel sheet screw fastening automation device also includes a placement mechanism, the placement mechanism including a square frame (101), the square frame (101) is connected to the workbench (1), two sliding rods (102) for placing silicon steel sheets are slidably connected to the square frame (101), two rotating rods (103) with screw segments (104) are rotatably connected to the square frame (101), and the two sliding rods (102) are respectively threadedly connected to the two rotating rods (103).

8. The automatic device for tightening screws of silicon steel sheets as claimed in claim 7, characterized in that: The silicon steel sheet screw fastening automation device also includes a limiting mechanism, the limiting mechanism includes a fixed rod (111), the fixed rod (111) is connected to the movable frame (3), a second electric push rod (112) is installed at the bottom end of the fixed rod (111), and a limiting plate (113) for limiting the silicon steel sheet is connected to the telescopic rod of the second electric push rod (112).

9. A method for fastening screws of silicon steel sheets, according to the automatic device for fastening screws of silicon steel sheets according to claim 7, characterized in that: The specific steps include: S1: rotating the rotating rod (103) to make the sliding rod (102) slide, thereby adjusting the distance between the two sliding rods (102) and placing the silicon steel sheet on the two sliding rods (102); S2: Control the three-dimensional motion platform (2) to move the moving frame (3) and the L-shaped cylinder (4) in three-dimensional directions, align the discharge port (44) with the threaded hole, and place the threaded sleeve (40) into the storage channel (41); S3: the push rod (8) slides backward, and the lowest threaded sleeve (40) leaves the storage channel (41) and enters the discharge channel (42), and the push rod (8) slides forward again and pushes the threaded sleeve (40) in the discharge channel (42) to the discharge port (44), and the other threaded sleeves (40) are blocked by the push rod (8); S4: the lifting plate (62), the movable rod (6) and the fastening block (7) are lowered. If the transverse hook end (401) is aligned with the slot (72), the transverse hook end (401) is inserted into the slot (72). If the transverse hook end (401) is not aligned with the slot (72), the spring is compressed to control the reduction motor (63) to drive the movable rod (6) and the fastening block (7) to rotate. When the slot (72) is aligned with the transverse hook end (401), the spring is reset and the transverse hook end (401) is also inserted into the slot (72). S5: the lifting plate (62), the movable rod (6) and the fastening block (7) continue to descend, and at the same time, the reduction motor (63) is controlled to drive the movable rod (6) and the fastening block (7) to continue to rotate, and the fastening block (7) drives the threaded sleeve (40) at the discharge port (44) to descend and rotate at the same time, thereby automatically screwing the threaded sleeve (40) into the threaded hole of the silicon steel sheet; S6: The lifting plate (62), the movable rod (6) and the fastening block (7) rise and reset, and the three-dimensional motion platform (2) is controlled to align the bottom end of the glue discharge cylinder (9) with the threaded hole screwed with the threaded sleeve (40), and the descending squeezing block (92) squeezes the glue in the glue discharge cylinder (9) into the threaded hole, and the glue discharge cylinder (9) leaves the threaded hole, and finally the screw is screwed into the threaded sleeve (40) squeezed with glue.

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