Automatic screw rotating machine

Abstract

The present invention discloses an automatic rotating screw machine, comprising a processing table, a feeding mechanism, a screw driving mechanism of a straight tube collection frame control cabinet, a rotating device and a straight tube positioner, the rotating device comprises a base 2, a motor 2 and a pneumatic claw, the output shaft of the motor 2 is connected to the pneumatic claw, the screw driving mechanism comprises an automatic screw machine, a positioning assembly and a cylinder 5, the positioning assembly comprises a rotating shaft and a positioning sleeve, the positioning sleeve is sleeved with an inner positioning sleeve, the rear end of the rotating shaft is inserted from the center of the positioning sleeve and is rotatably connected to the piston rod of the cylinder 5, the front end of the rotating shaft is provided with three teeth arranged around the circumference with the axis of the rotating shaft as the center point, the front end of the inner positioning sleeve is provided with three positioning blocks and three arc-shaped claws evenly arranged around the circumference with the axis of the rotating shaft as the center point, one side of the three teeth is respectively against the three positioning blocks, the center of the arc-shaped claw is rotatably connected to the front end of the inner positioning sleeve, and one end of each arc-shaped claw is provided with a limiting portion against the other side of the corresponding three teeth. This structure improves work efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of elevator grating processing equipment, in particular to an automatic rotating screw machine. Background Art

[0002] Elevator light curtain is a light-type elevator door safety protection device, suitable for passenger elevators and freight elevators to protect the safety of passengers. Simply put, the light curtain is actually two rods, one end emits n rays of light, and the other end receives the light. Installing the two rods on the two doors of the elevator respectively forms our common elevator light curtain. The light curtain can choose the number of rays according to needs. Now elevators are usually equipped with 64 segments, which is enough for general use.

[0003] The light curtain is also called a grating, and its length is generally more than 2 meters. During processing, in order to play a protective role, the light curtain needs to be inserted into a straight tube, and then the foam and plastic cover are placed in the tube mouth of the straight tube in turn to seal it. In the process of sealing the straight tube end and the plastic cover, in order to ensure the fixing effect, it is generally necessary to drive three screws in a circle on the side of the straight tube end, and the plastic cover is provided with three screw positioning piles in a corresponding circle. During the processing, the three screw positioning piles 60-1 (such as Figure 7 As shown), a mark is reserved at the position corresponding to the end of the straight pipe, and then a hole is punched by a screw machine. When punching, it is necessary to manually align the reserved mark on the straight pipe with the screw positioning pile 60-1 on the plastic cover 60 before drilling. Such an operation is relatively inefficient, and manual positioning is prone to inaccurate positioning, which ultimately leads to the problem of drilling offset, so it needs to be improved. Summary of the invention

[0004] The object of the present invention is to provide an automatic screw rotating machine to solve the problems of low processing efficiency and inaccurate manual positioning mentioned in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic rotating screw machine, comprising a processing table, a feeding mechanism, a straight tube collection frame and a control cabinet for controlling the operation of the entire equipment; a screw driving mechanism, a rotating device and two sets of straight tube positioners are arranged on the table top of the processing table; the rotating device comprises a base two, a motor two and a pneumatic claw; the motor two is fixed to one side of the base two; the output shaft of the motor two is connected to the pneumatic claw; the screw driving mechanism comprises an automatic screw machine, a positioning assembly and a cylinder five; the automatic screw machine is fixed to a base one; the positioning assembly comprises a rotating shaft and a positioning assembly fixed to the base one The shaft sleeve has an inner positioning sleeve inside the positioning sleeve. The rear end of the rotating shaft is inserted from the center of the positioning sleeve and is rotatably connected to the piston rod of cylinder five. The front end of the rotating shaft is provided with three teeth circumferentially distributed with the axis of the rotating shaft as the center point. The front end of the inner positioning sleeve is provided with three positioning blocks circumferentially evenly distributed with the axis of the rotating shaft as the center point. The front end of the inner positioning sleeve is provided with three arc-shaped claws circumferentially evenly distributed with the axis of the rotating shaft as the center point. One side of the three teeth is respectively abutted against the three positioning blocks. The center of the arc-shaped claw is rotatably connected to the front end of the inner positioning sleeve through a torsion spring, and one end of each arc-shaped claw is provided with a limiting portion abutting against the other side of the corresponding three teeth.

[0006] In order to enable the automatic screw machine to move up and down and further improve the screw driving effect, a cylinder four is also provided at the upper end of the base one, a second vertically arranged guide rail is fixed at the front end of the base one, and a slider two is slidably connected to the second guide rail, the piston rod of the cylinder four is connected to the slider two, a connecting plate one is fixed on the slider two, the automatic screw machine is fixed above the connecting plate one, and a baffle plate for blocking the front end surfaces of the three arc-shaped claws is provided at the front ends of the three teeth, a ball joint is connected to the piston rod of the cylinder five, a swing rod is hinged on the ball joint, and the other end of the swing rod is connected to the rotating shaft, and the cylinder five is fixed to the rear end of the base one through a cylinder seat one.

[0007] Preferably, a bearing is provided between the positioning sleeve and the inner positioning sleeve, and the bearing is pressed between the positioning sleeve and the inner positioning sleeve through a bearing seat. The bearing seat is sleeved outside the inner positioning sleeve, and one side of the bearing seat is abutted against one end face of the positioning sleeve, and a silicone ring is provided between the bearing seat and the inner positioning sleeve.

[0008] Furthermore, in order to be able to position straight tubes of different lengths and drive them to rotate, the rotating device also includes a linear guide rail fixed on the processing table, and a motor 1 is provided on one side of the linear guide rail to drive the guide rail slide on the linear guide rail to move, a guide plate is fixed on the guide rail slide, and two guide rails 1 extending along the length direction of the guide plate are fixed on the guide plate, and a base 3 is slidably connected between the two guide rails 1, and the base 2 is fixed on the base 3, and a first slider cooperating with the guide rail 1 and a slide cylinder are provided at the bottom of the base 3, and a limit plate is also provided on the guide plate, and the piston rod of the slide cylinder is connected to the limit plate, and the straight tube positioner on the left side is fixed on the guide plate.

[0009] In order to further speed up the transmission of the processed straight pipes, each group of straight pipe positioners includes a mounting seat, a cylinder 1, a rack and a U-shaped clamp. The opening of the U-shaped clamp faces upward and is used to fix the straight pipe. The mounting seat on the right is fixed to the processing table through a fixing seat. A notch is provided at the front end of the mounting seat. A gear is provided below the U-shaped clamp. The gear is inserted into the notch and is rotatably connected to the notch through a first rotating shaft. The rear end of the mounting seat is provided with the cylinder 1. The piston rod of the cylinder 1 passes through the mounting seat and is connected to the rack in the notch. The size rack is located below the gear and meshes with the gear. When the rack moves horizontally as the cylinder extends, it can drive the upper U-shaped clamp to rotate and transport the straight pipe to the straight pipe collection frame. Preferably, a guide bar is provided at the rear end of the U-shaped clamp.

[0010] In order to realize automatic loading and further improve work efficiency, the loading mechanism includes a loading frame with a front end inclined toward the processing table and a lifting mechanism, the lifting mechanism includes a lifting plate located at the bottom of the front end of the loading frame and capable of lifting the straight pipe in the loading frame, one or more lifting cylinders are arranged at intervals below the lifting plate, the lifting cylinders are fixed in the loading frame, the piston rods of all lifting cylinders are connected to the bottom of the lifting plate, a temporary placement bracket for storing straight pipes is provided between the loading frame and the processing table, the front end of the temporary placement bracket is inclined toward the processing table, a gantry bracket located above the temporary placement bracket is provided on the processing table, three groups of cylinder brackets are provided on the gantry bracket, and each group of cylinder brackets is provided with a second cylinder for limiting the straight pipe at the lower part of the temporary placement bracket and a third cylinder for limiting the straight pipe at the higher part of the temporary placement bracket.

[0011] In order to quickly transport the straight pipes to the straight pipe collection frame below, a triangular transmission step is provided on the processing table surface at the front end of the two sets of straight pipe positioners.

[0012] In order to display data information conveniently, a display screen electrically connected to the control cabinet is provided on the processing table.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: the structure automatically finds screw points for the plastic cover by setting an automatic positioning component, which is convenient to operate, does not require manual operation, improves work efficiency, and is more accurate than manual positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of an automatic rotating screw machine in this embodiment;

[0015] Figure 2 Schematic diagram of the structure of the rotating device in this embodiment;

[0016] Figure 3 for Figure 2 A schematic diagram of the structure when the middle guide plate and the base three are separated from other components;

[0017] Figure 4 Schematic diagram of the structure of the straight pipe positioner in this embodiment;

[0018] Figure 5 for Figure 4 Exploded diagram of

[0019] Figure 6 for Figure 4 Schematic diagram of the structure of the middle U-shaped clip;

[0020] Figure 7 It is a structural schematic diagram of a plastic cover in the prior art;

[0021] Figure 8 is a cross-sectional view of a positioning assembly;

[0022] Fig. 9 This is a schematic diagram of the front structure of the screw driving mechanism;

[0023] Fig.10 This is a structural diagram of the screw driving mechanism without a baffle installed;

[0024] Fig.11 for Fig.10 The structural diagram of the positioning component when it is decomposed;

[0025] Fig.12 This is a schematic diagram of the back structure of the screw driving mechanism.

[0026] Fig.13 It is a structural schematic diagram of the rotating shaft;

[0027] Fig.14 This is a schematic diagram of the structure of the feeding mechanism after it is combined with the processing table when there is no straight pipe installed;

[0028] Fig.15 This is a structural diagram of the feeding mechanism when there is no straight pipe installed;

[0029] Fig.16 for Fig.15 A schematic diagram of the structure when a group of cylinder brackets, jacking plates and other components are separated;

[0030] Fig.17 This is a schematic diagram of the structure when a straight pipe is installed on the feeding mechanism.

[0031] In the figure: processing table 1, feeding mechanism 2, straight tube collection frame 3, control cabinet 4, screw mechanism 5, rotating device 6, straight tube positioner 7, base 2 8, motor 2 9, pneumatic claw 10, base 1 11, automatic screw machine 12, positioning assembly 13, positioning sleeve 14, rotating shaft 15, gear 16, inner positioning sleeve 17, cylinder 5 18, cylinder seat 1 19-1, positioning block 19, arc claw 20, torsion spring 21, limit part 22, cylinder 4 23, second guide rail 24, slider 2 25, connecting plate 1 26, baffle 27, ball joint 28, rocker 29, bearing 17-1, silicone ring 17-2, linear guide 30, guide rail slide 31, motor 1, 32, guide plate 33, guide rail 1, 34, base 35, first slider 36, slide cylinder 37, limit plate 38, mounting seat 39, cylinder 1, 40, rack 41, U-shaped clamp 42, notch 43, gear 44, guide bar 45, feeding frame 46, lifting mechanism 47, lifting plate 48, lifting cylinder 49, temporary placement bracket 50, gantry bracket 51, cylinder bracket 52, third cylinder 53, second cylinder 54, triangular transmission step 55, display screen 56, first rotating shaft 57, fixing seat 58, straight pipe 59, plastic cover 60, screw positioning pile 60-1. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Example

[0033] See also Figure 1-Figure 17An embodiment of the present invention is as follows: an automatic rotating screw machine comprises a processing table 1, a feeding mechanism 2, a straight tube collection frame 3 and a control cabinet 4 for controlling the operation of the entire device. A screw driving mechanism 5, a rotating device 6 and two groups of straight tube positioners 7 are arranged on the table of the processing table 1. The rotating device 6 comprises a base 2 8, a motor 2 9 and a pneumatic claw 10. The motor 2 9 is fixed on one side of the base 2 8. The output shaft of the motor 2 9 is connected to the pneumatic claw 10. The screw driving mechanism 5 comprises an automatic screw machine 12, a positioning assembly 13 and a cylinder 5 18. The automatic screw machine 12 is fixed on a base 11. The positioning assembly 13 comprises a rotating shaft 15 and a positioning sleeve 14 fixed on the base 11. The positioning sleeve 14 is sleeved with an inner positioning sleeve 17. The rear end of the rotating shaft 15 is After the center of the positioning sleeve 14 is inserted, it is rotatably connected to the piston rod of the cylinder five 18. The front end of the rotating shaft 15 is provided with three teeth 16 on the circumference with the axis of the rotating shaft 15 as the center point. The front end of the inner positioning sleeve 17 is provided with three positioning blocks 19 on the circumference with the axis of the rotating shaft 15 as the center point. The front end of the inner positioning sleeve 17 is provided with three arc claws 20 on the circumference with the axis of the rotating shaft 15 as the center point. One side of the three teeth 16 is respectively abutted against the three positioning blocks 19. The center of the arc claw 20 is rotatably connected to the front end of the inner positioning sleeve 17 through a torsion spring 21, and one end of each arc claw 20 is provided with a limiting portion 22 that abuts against the other side of the corresponding three teeth 16. After the three teeth 16 are rotated, the three arc claws 20 can be opened and abutted against the screw positioning piles 60-1 in the plastic cover 60.

[0034] The above structure can realize automatic adjustment of the position of the screw positioning pile 60-1 in the plastic cover 60. By presetting the sizes of the three arc-shaped claws 20, it is ensured that the three arc-shaped claws 20 are driven by the three teeth 16 to open and close with each other to form a complete circle during the rotation of the rotating shaft 15. Then, it is ensured that the three arc-shaped claws 20 can be abutted against the screw positioning pile 60-1 in the plastic cover 60 and the three screw positioning piles 60-1 can be positioned. The specific working process is as follows: first, when the straight tube is transported to the two groups of straight tube positioners 7, the pneumatic claws 10 are used to clamp one end of the straight tube 59, and the other end of the straight tube (with the plastic cover 60) is oriented to the positioning component 13. At this time, it is ensured that the plastic cover 60 is abutted against the baffle. At this time, the rear cylinder 5 18 is driven to work, and the piston rod of the cylinder 5 18 extends to drive the rotating shaft 15 to rotate, driving the three teeth 16 at the front end to rotate. The rotation of the three teeth 16 drives the arc-shaped claws 20 to rotate. The arc-shaped claw 20 is in the open state, and the position points of the three screw positioning piles 60-1 in the plastic cover 60 are quickly found (and the first screw positioning pile 60-1 point is ensured to be just below the head of the automatic screw machine 12 at this time). At this time, the head of the automatic screw machine 12 above is driven downward to drive the screw into a screw positioning pile 60-1 on the fixed plastic cover 60. After one screw is driven, the pneumatic claw 10 is driven to rotate by the motor 2 9 on the side, and the straight tube is driven to rotate and synchronously drive the plastic cover 60 to the next punching position of the straight tube, and the second screw is driven and the third screw is driven according to the above steps. After the second screw is driven, the straight tube is unloaded and placed in the straight tube collection frame 3. Therefore, the structure automatically finds the screw-driving point for the plastic cover 60 by setting an automatic positioning component, which is convenient to operate, does not require manual operation, improves work efficiency, and is more accurate than manual positioning.

[0035] In order to enable the automatic screw machine 12 to move up and down and further improve the screwing effect, a cylinder 4 23 is also provided at the upper end of the base 11, a second guide rail 24 arranged vertically is fixed at the front end of the base 11, a slider 25 is slidably connected to the second guide rail 24, a piston rod of the cylinder 4 23 is connected to the slider 25, a connecting plate 1 26 is fixed to the slider 25, the automatic screw machine 12 is fixed above the connecting plate 1 26, and a baffle is provided at the front end of the three teeth 16 to block the front end surfaces of the three arc-shaped claws 20 27, a ball joint 28 is connected to the piston rod of the cylinder five 18, a rocker arm 29 is hinged on the ball joint 28, the other end of the rocker arm 29 is connected to the rotating shaft 15, the cylinder five 18 is fixed to the rear end of the base one 11 through the cylinder seat one 19-1, and the cylinder five 18 of the above structure drives the ball joint 28 to move up and down, and the ball joint 28 drives the rocker arm 29 to rotate, and finally drives the rotating shaft 15 to rotate, and in this structure, the cylinder four 23 can drive the automatic screw machine 12 to move up and down along the second guide rail 24 to adjust the height.

[0036] Preferably, a bearing 17-1 is provided between the positioning sleeve 14 and the inner positioning sleeve 17. The bearing 17-1 is pressed between the positioning sleeve 14 and the inner positioning sleeve 17 through a bearing seat 17-3. The bearing seat 17-3 is sleeved on the outside of the inner positioning sleeve 17, and one side of the bearing seat 17-3 is abutted against one end face of the positioning sleeve 14. A silicone ring 17-2 is provided between the bearing seat 17-3 and the inner positioning sleeve 17, and the bearing 17-1 plays a supporting role.

[0037] Furthermore, in order to be able to position straight tubes of different lengths and drive them to rotate, the rotating device 6 also includes a linear guide 30 fixed on the processing table 1, and a motor 32 is provided on one side of the linear guide 30 to drive the guide slide 31 on the linear guide 30 to move, a guide plate 33 is fixed on the guide slide 31, and two guide rails 34 extending along the length direction of the guide plate 33 are fixed on the guide plate 33, and a base 35 is slidably connected between the two guide rails 34, and the base 2 8 is fixed on the base 35, and a first slider 36 cooperating with the guide rail 1 34 and a slide cylinder 37 are provided at the bottom of the base 35, and a limit plate 38 is also provided on the guide plate 33, and the piston rod of the slide cylinder 37 is connected to the limit plate 38, and the straight tube positioner 7 on the left side is fixed on the guide plate 33. Through the above-mentioned structural arrangement, the distance between the pneumatic claws 10 on both sides and the positioning assembly can be adjusted as needed to ensure that it can operate straight tubes of different lengths, thereby further improving applicability. During operation, the guide rail slide 31 on the linear guide rail 30 is driven to move by the motor 1 32, and the upper guide plate 33 is driven to move synchronously to finally move the upper pneumatic claw 10, and the position of the pneumatic claw 10 is fine-tuned by setting the slide cylinder 37.

[0038] In order to further speed up the transmission of the processed straight pipes, each group of straight pipe positioners 7 includes a mounting seat 39, a cylinder 40, a rack 41 and a U-shaped clamp 42. The opening of the U-shaped clamp 42 faces upward and is used to fix the straight pipe. The mounting seat 39 on the right is fixed to the processing table 1 through a fixing seat 58. A notch 43 is provided at the front end of the mounting seat 39. A gear 44 is provided below the U-shaped clamp 42. The gear 44 is inserted into the notch 43, and the gear 44 is rotatably connected to the notch 43 through a first rotating shaft 57. The rear end of the mounting seat 39 is provided with the cylinder 40. The piston rod of the cylinder 40 passes through the mounting seat 39 and is connected to the rack 41 in the notch 43. The size of the rack 41 Located below the gear 44 and meshing with the gear 44, and when the rack 41 moves horizontally with the extension of the cylinder, it can drive the upper U-shaped clamp 42 to rotate and transport the straight pipe into the straight pipe collection frame 3. During operation, when the straight pipe 59 is punched, the cylinder 1 40 is driven to work, and the cylinder 1 40 pushes the rack 41 to move forward and backward, and finally the rack 41 drives the gear 44 to rotate, and the gear 44 rotates synchronously to drive the upper U-shaped clamp 42 to swing back and forth. When the opening of the U-shaped clamp 42 swings toward the straight pipe collection frame 3, the straight pipe in the U-shaped clamp 42 can be quickly pushed into the straight pipe collection frame 3 under the action of gravity, so as to achieve rapid material discharge, further improve work efficiency, and also push the straight pipe to a relatively far place. Preferably, a guide bar 45 is provided at the rear end of the U-shaped clamp 42, and the guide bar 45 is provided to facilitate the straight pipe 59 to quickly fall into the U-shaped clamp 42.

[0039] In order to realize automatic loading and further improve work efficiency, the loading mechanism 2 includes a loading frame 46 with a front end inclined toward the processing table 1 and a lifting mechanism 47, the lifting mechanism 47 includes a lifting plate 48 located at the bottom of the front end of the loading frame 46 and capable of lifting the straight pipe in the loading frame 46, and one or more lifting cylinders 49 are arranged at intervals below the lifting plate 48, and the lifting cylinders 49 are fixed in the loading frame 46, and the piston rods of all the lifting cylinders 49 are connected to the lifting cylinders 49. The bottom of the plate 48 is connected, and a temporary placement bracket 50 for storing straight pipes is provided between the loading frame 46 and the processing table 1. The front end of the temporary placement bracket 50 is inclined toward the processing table 1, and a gantry bracket 51 located above the temporary placement bracket 50 is provided on the processing table 1, and three groups of cylinder brackets 52 are provided on the gantry bracket 51, and each group of cylinder brackets 52 is provided with a second cylinder 54 for limiting the straight pipe at the lower part of the temporary placement bracket 50 and a third cylinder 53 for limiting the straight pipe at the upper part of the temporary placement bracket 50. There are three groups of temporary placement brackets 50 described in the present embodiment, and each group of temporary placement brackets 50 includes an inclined cross bar 50-1 and a vertical rod 50-2 connected to the cross bar 50-1, one of the vertical rods 50-2 is fixed on the processing table, and the other vertical rod 50-2 is fixed on the feeding frame 46. When the above structure is set up, the straight pipe 59 is placed in the feeding frame 46. After it is full, the lifting cylinder 49 below is driven to work, and the lifting plate 48 is pushed upward, and the upper straight pipe 59 is pushed out of the feeding frame 46, and then falls onto the temporary placement bracket 50 under the action of gravity, and then slowly moves to the lower part of the temporary placement bracket 50, and is pushed out by the second cylinder 54, so that the straight pipe at the lower position of the temporary placement bracket 50 is first The straight pipe is limited at this position to avoid being affected by the straight pipe in front that is still being screwed, and the lifting plate 48 continues to feed the straight pipe to the upper part of the temporary support 50, and is ejected by the third cylinder 53, and the straight pipe at the upper part of the temporary support 50 is first limited at this position to avoid blockage due to the existence of straight pipes at the lower part of the temporary support 50. Then, when the screwing in the front is completed, the second cylinder 54 is reset, and under the action of gravity, the straight pipe falls into the two groups of straight pipe positioners 7. After the straight pipe at the lower part of the temporary support 50 is unloaded, the second cylinder 54 is extended at this time, and the third cylinder 53 is reset, so that the straight pipe at the upper part of the temporary support 50 falls into the lower part of the temporary support 50. The automatic feeding process is realized according to the above structure without manual operation, thereby further improving work efficiency.

[0040] In order to quickly transport the straight tubes to the straight tube collection frame 3 below, a triangular transmission step 55 is provided on the processing table 1 at the front end of the two groups of straight tube positioners 7. The above structure allows the straight tube 59 transported from the clamping mouth of the U-shaped clamp 42 to quickly fall into the straight tube collection frame 3 through the triangular transmission step 55. In order to conveniently display data information, a display screen 56 electrically connected to the control cabinet 4 is also provided on the processing table 1. The display screen 56 is used to display the process data of the equipment processing.

[0041] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. An automatic screw-rotating machine, comprising a processing table (1), a feeding mechanism (2), a straight tube collecting frame (3) and a control cabinet (4) for controlling the operation of the entire device, characterized in that: A screw driving mechanism (5), a rotating device (6) and two sets of straight tube positioners (7) are provided on the table surface of the processing table (1). The rotating device (6) comprises a base (8), a motor (9) and a pneumatic claw (10). The motor (9) is fixed to one side of the base (8). The output shaft of the motor (9) is connected to the pneumatic claw (10). The screw driving mechanism (5) comprises an automatic screw machine (12), a positioning assembly (13) and a cylinder (18). The automatic screw machine (12) is fixed to the base (11). The positioning assembly (13) comprises a rotating shaft (15) and a positioning sleeve (14) fixed to the base (11). The positioning sleeve (14) is sleeved with an inner positioning sleeve (17). The rear end of the shaft (15) is inserted from the center of the positioning sleeve (14) and is rotatably connected to the piston rod of the cylinder 5 (18). The front end of the rotating shaft (15) is provided with three teeth (16) circumferentially with the axis of the rotating shaft (15) as the center point. The front end of the inner positioning sleeve (17) is provided with three positioning blocks (19) circumferentially with the axis of the rotating shaft (15) as the center point. The front end of the inner positioning sleeve (17) is provided with three arc-shaped claws (20) circumferentially with the axis of the rotating shaft (15) as the center point. One side of the three teeth (16) is respectively against the three positioning blocks (19). The center of the arc-shaped claw (20) is rotatably connected to the front end of the inner positioning sleeve (17) through a torsion spring (21), and one end of each arc-shaped claw (20) is provided with a corresponding three teeth. The base 1 (11) is provided with a limiting portion (22) abutting against the other side of the base 1 (16), the upper end of the base 1 (11) is also provided with a cylinder 4 (23), a second guide rail (24) arranged vertically is fixed at the front end of the base 1 (11), a slider 2 (25) is slidably connected to the second guide rail (24), the piston rod of the cylinder 4 (23) is connected to the slider 2 (25), a connecting plate 1 (26) is fixed to the slider 2 (25), the automatic screw machine (12) is fixed above the connecting plate 1 (26), a baffle (27) is provided at the front end of the three teeth (16) to block the front end surfaces of the three arc-shaped claws (20), a ball joint rod (28) is connected to the piston rod of the cylinder 5 (18), and the ball joint rod (28) is hinged A swing rod (29) is connected, the other end of the swing rod (29) is connected to the rotating shaft (15), the cylinder five (18) is fixed to the rear end of the base one (11) through the cylinder seat one (19-1), a bearing (17-1) is provided between the positioning sleeve (14) and the inner positioning sleeve (17), the bearing (17-1) is pressed between the positioning sleeve (14) and the inner positioning sleeve (17) through a bearing seat (17-3), the bearing seat (17-3) is sleeved on the outside of the inner positioning sleeve (17), and one side of the bearing seat (17-3) is against one end surface of the positioning sleeve (14), and a silicone ring (17-2) is provided between the bearing seat (17-3) and the inner positioning sleeve (17),The feeding mechanism (2) comprises a feeding frame (46) whose front end is inclined toward the processing table (1) and a lifting mechanism (47), wherein the lifting mechanism (47) comprises a lifting plate (48) located at the bottom of the front end of the feeding frame (46) and capable of lifting the straight pipe in the feeding frame (46), and one or more lifting cylinders (49) are arranged at intervals below the lifting plate (48), and the lifting cylinders (49) are fixed in the feeding frame (46), and the piston rods of all the lifting cylinders (49) are connected to the bottom of the lifting plate (48), and a spacer for storing the lifting cylinders (49) is provided between the feeding frame (46) and the processing table (1). A temporary placement bracket (50) for placing a straight pipe, wherein the front end of the temporary placement bracket (50) is inclined toward the processing table (1), a gantry bracket (51) located above the temporary placement bracket (50) is provided on the processing table (1), three groups of cylinder brackets (52) are provided on the gantry bracket (51), each group of cylinder brackets (52) is provided with a second cylinder (54) for limiting the straight pipe at a lower position of the temporary placement bracket (50) and a third cylinder (53) for limiting the straight pipe at a higher position of the temporary placement bracket (50), and a triangular transmission step (55) located at the front end of two groups of straight pipe positioners (7) is also provided on the processing table (1).

2. The automatic screw rotating machine according to claim 1, characterized in that: The rotating device (6) further comprises a linear guide rail (30) fixed on the processing table (1), a motor (32) for driving the guide rail slide (31) on the linear guide rail (30) to move is provided on one side of the linear guide rail (30), a guide plate (33) is fixed on the guide rail slide (31), two guide rails (34) extending along the length direction of the guide plate (33) are fixed on the guide plate (33), a base (35) is slidably connected between the two guide rails (34), the base (8) is fixed on the base (35), a first slider (36) cooperating with the guide rail (34) and a slide cylinder (37) are provided at the bottom of the base (35), a limit plate (38) is also provided on the guide plate (33), a piston rod of the slide cylinder (37) is connected to the limit plate (38), and a straight tube positioner (7) on the left is fixed on the guide plate (33).

3. An automatic screw rotating machine according to claim 1 or 2, characterized in that: Each set of straight pipe positioners (7) comprises a mounting seat (39), a cylinder (40), a rack (41) and a U-shaped clamp (42). The opening of the U-shaped clamp (42) faces upward and is used to fix the straight pipe. The mounting seat (39) on the right side is fixed to the processing table (1) through a fixing seat (58). A notch (43) is provided at the front end of the mounting seat (39). A gear (44) is provided below the U-shaped clamp (42). The gear (44) is inserted into the notch (43) and the gear (44) is inserted through a first The rotating shaft (57) is rotatably connected in the notch (43), and the rear end of the mounting seat (39) is provided with the cylinder 1 (40). The piston rod of the cylinder 1 (40) passes through the mounting seat (39) and is connected to the rack (41) in the notch (43). The size rack (41) is located below the gear (44) and meshes with the gear (44). When the rack (41) moves horizontally as the cylinder extends, it can drive the U-shaped clamp (42) above to rotate and transport the straight pipe into the straight pipe collection frame (3).

4. The automatic screw rotating machine according to claim 3, characterized in that: A guide strip (45) is provided at the rear end of the U-shaped clip (42).

5. An automatic screw rotating machine according to claim 1, 2 or 4, characterized in that: A display screen (56) electrically connected to the control cabinet (4) is also provided on the processing table (1).

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