A screw conveying pipe for an automatic screwdriver

Abstract

The present invention discloses a screw conveying pipe for an automatic screw machine, which includes a sliding plate, a shaft seat, a traction mechanism and a catheter housing. A shaft seat is fixedly installed at the top of the sliding plate. One side of the shaft sleeve is fixedly connected to a feed end housing through a connecting plate. A screening housing is fixedly installed at the bottom of the feed end housing. One side of each of the two sliding seats is fixedly connected to a fixed plate inside the screening housing. Slide rods are fixedly installed at the top of the two fixed plates. When the screws fall in the present invention, they enter the interior of the screening housing through the feed end housing. When the tip of the screw faces downward, it can squeeze the pressure sensor at the bottom of the screening housing under the support of the semi-supporting ring body, drive the two sliding seats to slide apart to both sides through the lead screw, release the limit of the semi-supporting ring body, and thus output through the first conveying pipe. When the tip of the screw is at the upper end, the pull rod pulls the feed port to tilt to one side around the shaft sleeve, and discharges through the second conveying pipe. It is convenient to maintain and use, reduces the processing procedures, and improves the processing efficiency at the same time.

Description

Technical Field

[0001] The present invention relates to a conveying pipe, in particular to a screw conveying pipe for an automatic screwdriver, and belongs to the technical field of screwdrivers. Background Art

[0002] A screwdriver is a small machine for automatic screw locking. Its action structure generally can be divided into two parts: a feeding part and an electric screwdriver part. The feeding part is responsible for screening and providing screws, and the electric screwdriver part is responsible for picking up and locking the screws. The emergence of the screwdriver not only improves the operation efficiency but also reduces the manual operation intensity.

[0003] An automatic screw feeding and locking machine, also known as an automatic screw locking machine, an automatic screw locking device, an industrial tightening system, etc., is an automatic device that uses an automated mechanism to replace manual labor to complete the picking, placing, and tightening of screws. With a little modification, it can also be used for the automatic assembly of cylindrical small parts. It has been widely used abroad. At present, many domestic enterprises have very broad application prospects. It is mainly used in the automatic assembly of automotive parts, computers, display screens, motors, lamps, mobile phones, printers, circuit boards, batteries, instruments, etc., which can greatly improve production efficiency, reduce production costs, and improve reliability.

[0004] With the improvement of industrial automation, especially when carrying out flow production operations, it is often necessary to arrange screws in a certain order for easy access. Traditional screw assembly is often that an operator takes out a screw from a pile of screws, then adjusts the position of the screw and places it above the screw hole, and finally uses a special tool for manual tightening. The method of manual feeding not only has low assembly efficiency and frequent repetitive actions, but also easily causes operator fatigue when a large number of screws need to be tightened, and cannot meet the increasingly competitive market environment.

[0005] In order to improve the efficiency of screw picking and reduce the burden on operators, various types of screw aligning machines have been developed on the market, mainly including three types: vibrating disk type, slide rail pushing type, and roller rotating type. The vibrating disk type screw aligning machine conveys screws through the microwave motion generated by a high-frequency vibration magnet. The slide rail pushing type screw aligning machine uses a reciprocating pushing slide rail groove to move up and down in the screw hopper, and the slide rail groove sorts and pushes the screws. The roller rotating type screw aligning machine is that when the screws move in the roller, they fall due to gravity into the vibrating feeding rail and are aligned and sent to the feeding mechanism. However, the above three screw aligning mechanisms have complex structures, inconvenient maintenance, and many processes, slow processing time, and affect processing efficiency.

[0006] Meanwhile, when the screw conveying pipe conveys screws, it cannot be bent significantly. When the bending amplitude is large, it will squeeze the internal volume of the conveying pipe, thus hindering the movement of the screws. The existing conveying pipes lack relevant guiding devices, and when screws are conveyed, generally multiple pipes are used to convey different types of screws. When there are too many conveying pipes, they will be intertwined, affecting the normal conveying of screws. Summary of the Invention

[0007] The purpose of the present invention is to provide a screw conveying pipe for an automatic screwdriver to solve the problems raised in the above background technology, that is, when the screw conveying pipe conveys screws, it cannot be bent significantly. When the bending amplitude is large, it will squeeze the internal volume of the conveying pipe, thus hindering the movement of the screws. The existing conveying pipes lack relevant guiding devices, and when screws are conveyed, generally multiple pipes are used to convey different types of screws. When there are too many conveying pipes, they will be intertwined, affecting the normal conveying of screws.

[0008] To achieve the above purpose, the present invention provides the following technical solution: A screw conveying pipe for an automatic screwdriver, including a sliding plate, a shaft seat, and a traction mechanism. A shaft seat is fixedly installed at the top end of the sliding plate. A rotating shaft is fixedly sleeved inside the shaft seat. A shaft sleeve is movably sleeved outside the rotating shaft. One side of the shaft sleeve is fixedly connected to a feeding end shell through a connecting plate. A screening shell is fixedly installed at the bottom end of the feeding end shell. A transmission shell is fixedly installed on one side of the bottom of the screening shell. A motor is fixedly installed on one side of the transmission shell. A chute is fixedly opened at the bottom inside the screening shell. Two sliding seats are slidably connected inside the chute. One side of each of the two sliding seats is fixedly connected to a fixing plate inside the screening shell. Slide rods are fixedly installed at the top ends of the two fixing plates. A limiting block is slidably sleeved outside the slide rod. A semi-supporting ring body is fixedly installed on one side of the limiting block. A pull rod is movably installed on one side of the middle of the screening shell.

[0009] As a preferred technical solution of the present invention, a buffer spring is fixedly sleeved outside the slide rod. The two sliding seats are respectively threadedly connected to both ends of a lead screw, and the thread directions at both ends of the lead screw are opposite. One end of the lead screw is fixedly connected to the output end of the motor. A pressure sensor is fixedly installed on one side of the bottom of the screening shell.

[0010] As a preferred technical solution of the present invention, a first discharge port is fixedly installed at the bottom end of the screening shell. A first conveying pipe is fixedly connected to the bottom end of the first discharge port. A second discharge port is provided on one side of the feeding end shell. A second conveying pipe is fixedly connected to one end of the second discharge port, and the second conveying pipe and the first conveying pipe can be pulled by the traction mechanism.

[0011] As a preferred technical solution of the present invention, the traction mechanism is composed of a support bottom plate, vertical rods, a conduit housing and an inner turntable. Vertical rods are fixedly installed on both sides of the top end of the support bottom plate. Slide sleeves are slidably sleeved on the outer sides of the two vertical rods, and support plates are fixedly connected to one sides of the two slide sleeves.

[0012] As a preferred technical solution of the present invention, a support rod is fixedly connected to the top end of the support plate, and the top end of the support rod is fixedly connected to the conduit housing arranged on the top of the support bottom plate. An annular sliding groove is formed inside the conduit housing, and an inner turntable is slidably connected inside the annular sliding groove.

[0013] As a preferred technical solution of the present invention, a rubber inner ring is fixedly installed on the inner ring of the inner turntable. A side hole is formed on one side of the inner turntable, and a side groove is formed on one side of the conduit housing, and the width of the side groove matches that of the side hole.

[0014] As a preferred technical solution of the present invention, a bottom plate is fixedly installed at the bottom end of the support bottom plate, and a magnetic adsorption plate is fixedly installed at the bottom end of the bottom plate.

[0015] As a preferred technical solution of the present invention, a cross rod is fixedly connected to one side of the bottom of the vertical rod. An electric hydraulic cylinder is fixedly installed at the top end of the cross rod, and the output end of the electric hydraulic cylinder is fixedly connected to the bottom end of the conduit housing. The bottom end of the cross rod is movably installed with a laser seat through a pin shaft. A laser generator is fixedly installed at one end of the laser seat, and an indicating disk is fixedly installed in the middle of the top end of the support bottom plate.

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

[0017] 1. For the screw conveying pipe of an automatic screwdriver in the present invention, as the shaft seat moves, when the screw drops, it enters the inside of the screening housing through the feeding end shell. When the tip of the screw faces downwards, it can squeeze the pressure sensor at the bottom of the screening housing under the support of the semi-supporting ring body, drive the two sliding seats to slide apart to both sides through the lead screw, release the limit of the semi-supporting ring body, and thus output through the first conveying pipe. When the tip of the screw is at the upper end, the pressure sensor does not receive a signal, and the feeding port is pulled by the pull rod to tilt to one side around the shaft sleeve, and thus discharges through the second conveying pipe. The re-sorting of the screws can be realized through the simple cooperation of the screening housing, the pressure sensor and the shaft seat, which is convenient for maintenance and use, reduces the processing procedures, and improves the processing efficiency at the same time.

[0018] 2. For the screw conveying pipe of an automatic screwdriver in the present invention, a traction mechanism is provided for the first conveying pipe and the second conveying pipe for traction. The inner turntable limits and supports the conveying pipe. And an electric hydraulic cylinder and a sliding sleeve sleeved outside the vertical rod are provided at the bottom of the conduit housing, which can freely adjust the height of the conduit housing. At the same time, a rotatable laser seat and a laser generator are provided at the bottom of the cross bar. Cooperating with the indicating disk at the bottom, the angle between the two traction mechanisms can be measured to prevent the angle from being too large, causing bending of the first conveying pipe and the second conveying pipe, thereby affecting the screw conveying. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural view of the present invention;

[0020] Figure 2 is a schematic structural view of the traction mechanism in the present invention;

[0021] Figure 3 is a schematic internal structural view of the screening housing in the present invention;

[0022] Figure 4 is a schematic structural view of the semi-supporting ring body in the present invention;

[0023] Figure 5 is an enlarged schematic structural view of the laser seat in the present invention;

[0024] Figure 6 is a schematic bottom structural view of the supporting bottom plate in the present invention.

[0025] In the figure: 1, slide plate; 2, shaft seat; 3, rotating shaft; 4, shaft sleeve; 5, pull rod; 6, feed end shell; 7, screening housing; 8, motor; 9, first discharge port; 10, transmission housing; 11, second discharge port; 12, second conveying pipe; 13, first conveying pipe; 14, traction mechanism; 15, supporting bottom plate; 16, electric hydraulic cylinder; 17, laser seat; 18, cross bar; 19, vertical rod; 20, sliding sleeve; 21, support plate; 22, support rod; 23, conduit housing; 24, inner turntable; 25, side groove; 26, sliding seat; 27, fixing plate; 28, sliding rod; 29, limiting block; 30, semi-supporting ring body; 31, lead screw; 32, indicating disk; 33, laser generator; 34, negative film; 35, magnetic adsorption plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] Please refer toFigure 1 -6, the present invention provides a technical solution for a screw conveying pipe for an automatic screwdriver: An automatic screwdriver screw conveying pipe includes a sliding plate 1, a shaft seat 2, and a traction mechanism 14. A shaft seat 2 is fixedly installed at the top of the sliding plate 1. A rotating shaft 3 is fixedly sleeved inside the shaft seat 2. A shaft sleeve 4 is movably sleeved outside the rotating shaft 3. One side of the shaft sleeve 4 is fixedly connected to a feed end housing 6 through a connecting plate. A screening housing 7 is fixedly installed at the bottom of the feed end housing 6. A transmission housing 10 is fixedly installed on one side of the bottom of the screening housing 7. A motor 8 is fixedly installed on one side of the transmission housing 10. A chute is fixedly opened at the bottom inside the screening housing 7. Two sliding seats 26 are slidably connected inside the chute. One side of each of the two sliding seats 26 is fixedly connected to a fixed plate 27 inside the screening housing 7. Slide rods 28 are fixedly installed at the top of the two fixed plates 27. A limiting block 29 is slidably sleeved outside the slide rod 28. A semi-supporting ring body 30 is fixedly installed on one side of the limiting block 29. A pull rod 5 is movably installed on one side of the middle of the screening housing 7.

[0028] A buffer spring is fixedly sleeved outside the slide rod 28. The two sliding seats 26 are respectively threadedly connected to both ends of a lead screw 31, and the thread directions at both ends of the lead screw 31 are opposite. One end of the lead screw 31 is fixedly connected to the output end of the motor 8. A pressure sensor is fixedly installed on one side of the bottom of the screening housing 7.

[0029] A first discharge port 9 is fixedly installed at the bottom of the screening housing 7. A first conveying pipe 13 is fixedly connected to the bottom of the first discharge port 9. A second discharge port 11 is provided on one side of the feed end housing 6. One end of the second discharge port 11 is fixedly connected to a second conveying pipe 12, and the second conveying pipe 12 and the first conveying pipe 13 can be pulled by the traction mechanism 14.

[0030] The traction mechanism 14 is composed of a support bottom plate 15, vertical rods 19, a conduit housing 23, and an inner turntable 24. Vertical rods 19 are fixedly installed on both sides of the top of the support bottom plate 15. Slide sleeves 20 are slidably sleeved outside the two vertical rods 19. One side of each of the two slide sleeves 20 is fixedly connected to a support plate 21.

[0031] A support rod 22 is fixedly connected to the top of the support plate 21, and the top of the support rod 22 is fixedly connected to the conduit housing 23 provided on the top of the support bottom plate 15. An annular chute is opened inside the conduit housing 23. An inner turntable 24 is slidably connected inside the annular chute.

[0032] A rubber inner ring is fixedly installed on the inner circle of the inner turntable 24. A side hole is opened on one side of the inner turntable 24. A side groove 25 is opened on one side of the conduit housing 23, and the width of the side groove 25 matches the width of the side hole.

[0033] A bottom plate 34 is fixedly installed at the bottom of the support bottom plate 15. A magnetic adsorption plate 35 is fixedly installed at the bottom of the bottom plate 34.

[0034] One side of the bottom of the vertical rod 19 is fixedly connected to a cross bar 18. The top end of the cross bar 18 is fixedly installed with an electric hydraulic cylinder 16, and the output end of the electric hydraulic cylinder 16 is fixedly connected to the bottom end of the conduit housing 23. The bottom end of the cross bar 18 is movably installed with a laser seat 17 through a pin shaft. One end of the laser seat 17 is fixedly installed with a laser generator 33. The middle part of the top end of the support bottom plate 15 is fixedly installed with an indicating disk 32.

[0035] According to Figure 1 As shown in Fig. -3, specifically, there is a feed pipe directly above the feed end housing 6. The disordered screws are conveyed through the feed pipe, then fall directly due to gravity, and enter the inside of the screening housing 7 through the feed end housing 6. When the tip of the conveyed screw faces downward, the bottom of the screw directly passes through the semi-supporting ring body 30 and passes through the middle of the two semi-supporting ring bodies 30. The top of the screw is stuck by the semi-supporting ring body 30. Due to the impact force during the fall, the bottom end of the screw presses the pressure sensor at the bottom of the screening housing 7, thereby triggering the pressure sensor to start the motor 8. The motor 8 drives the lead screw 31 to rotate, and drives the two sliding seats 26 to slide apart to both sides through the lead screw 31. Since the sliding seats 26 are connected to the fixed plate 27, the fixed plate 27 slides together, driving the two semi-supporting ring bodies 30 to slide apart to both sides, thereby releasing the limit of the semi-supporting ring body 30. At this time, the screw loses its limit and can directly fall due to gravity, and is thus output through the first conveying pipe 13.

[0036] According to Figure 1 As shown in Fig. -5, specifically, there is a rotatable laser seat 17 on one side of the bottom of the cross bar 18. A laser generator 33 is installed on the laser seat 17. On the other side of the bottom of the cross bar 18, there is a laser receiver. When the laser is received, the indicator light can be lit. When towing the first conveying pipe 13 and the second conveying pipe 12, generally several towing mechanisms 14 are required for towing. Rotate the laser seat 17 so that the laser emitted by the laser generator 33 is received by the laser receiver installed on the previous towing mechanism 14. At this time, check the rotation angle of the laser seat 17 through the indicating disk 32 to measure the angle between the two towing mechanisms 14 and prevent the angle from being too large, which may cause the first conveying pipe 13 and the second conveying pipe 12 to bend and thus affect the conveying of the screws.

[0037] During specific use, for the screw conveying pipe of an automatic screwdriver according to the present invention, a screening assembly composed of a shaft seat 2, a slide plate 1, a rotating shaft 3, etc. is installed inside the screwdriver device. The slide plate 1 is pushed to slide by a power mechanism. The shaft seat 2 moves along with the slide plate 1. And there is a feed pipe directly above the feed end housing 6. Disorderly screws are conveyed through the feed pipe, and then fall directly by gravity and enter the screening housing 7 through the feed end housing 6. When the tip of the conveyed screw faces downward, the bottom of the screw directly passes through the semi-supporting ring body 30 and passes through the middle of the two semi-supporting ring bodies 30. The top of the screw is stuck by the semi-supporting ring body 30. Due to the impact force during falling, the bottom end of the screw presses the pressure sensor at the bottom of the screening housing 7, thereby triggering the pressure sensor to start the motor 8. The motor 8 drives the lead screw 31 to rotate, and drives the two sliding seats 26 to slide apart to both sides through the lead screw 31. Since the sliding seats 26 are connected to the fixing plate 27, the fixing plate 27 slides together, driving the two semi-supporting ring bodies 30 to slide apart to both sides, thereby releasing the limit of the semi-supporting ring body 30. At this time, the screw loses its limit and can directly fall due to gravity, and thus is output through the first conveying pipe 13. When the tip of the screw is at the upper end, the pressure sensor does not receive a signal and does not trigger the motor 8. At this time, the feed end housing 6 is pulled by the pull rod 5 to tilt to one side around the shaft sleeve 4, so that the feed end housing 6 is biased towards the second discharge port 11, and thus discharges through the second conveying pipe 12. Through the simple cooperation of the screening housing 7, the pressure sensor, and the shaft seat 2, the re-sorting of the screws can be realized, which is convenient for maintenance and use, reduces the processing procedures, and improves the processing efficiency at the same time. The first conveying pipe 13 and the second conveying pipe 12 are provided with a traction mechanism 14 for traction. The first conveying pipe 13 and the second conveying pipe 12 pass through the inner turntable 24, and the inner turntable 24 is used to limit and support the conveying pipes. And there is an electric hydraulic cylinder 16 at the bottom of the conduit housing 23 and a sliding sleeve 20 sleeved outside the vertical rod 19, which can freely adjust the height of the conduit housing 23. At the same time, there is a rotatable laser seat 17 and a laser generator 33 at the bottom of the cross bar 18. Cooperating with the indicating disk 32 at the bottom, the angle between the two traction mechanisms 14 can be measured to prevent the angle from being too large and causing bending of the first conveying pipe 13 and the second conveying pipe 12, thereby affecting the screw conveying thereof.

[0038] In the description of the present invention, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0039] In the present invention, unless otherwise clearly defined and limited, for example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0040] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A screw conveying tube for an automatic screw machine, comprising a slide plate (1), an axle seat (2), and a traction mechanism (14). It is characterized in that The top of the slide plate (1) is fixedly mounted with an axle seat (2), the internal fixed sleeve of the axle seat (2) is provided with a rotating shaft (3), the external movable sleeve of the rotating shaft (3) is provided with a shaft sleeve (4), one side of the shaft sleeve (4) is fixedly connected to a feed end shell (6) via a connecting plate, the bottom of the feed end shell (6) is fixedly mounted with a screening shell (7), one side of the bottom of the screening shell (7) is fixedly mounted with a transmission shell (10), one side of the transmission shell (10) is fixedly mounted with a motor (8), and the screening shell ( 7) is fixedly provided with a slide groove at the bottom, and two slide seats (26) are slidably connected inside the slide groove, one side of the two slide seats (26) is fixedly connected to the fixed plate (27) inside the screening shell (7), and the top of the two fixed plates (27) is fixedly installed with a slide rod (28), and the outer sliding sleeve of the slide rod (28) is provided with a limit block (29), and a semi-support ring body (30) is fixedly installed on one side of the limit block (29), and a pull rod (5) is movably installed on one side of the middle part of the screening shell (7); The outer fixed sleeve of the slide rod (28) is provided with a buffer spring, the interiors of the two slide seats (26) are respectively threadedly connected to the two ends of the screw rod (31), and the thread directions of the two ends of the screw rod (31) are opposite, one end of the screw rod (31) is fixedly connected to the output end of the motor (8), and a pressure sensor is fixedly installed on one side of the bottom of the screening shell (7); A first discharge port (9) is fixedly mounted at the bottom end of the screening shell (7), a first conveying pipe (13) is fixedly connected to the bottom end of the first discharge port (9), a second discharge port (11) is provided on one side of the feed end shell (6), a second conveying pipe (12) is fixedly connected to one end of the second discharge port (11), and the second conveying pipe (12) and the first conveying pipe (13) can be towed by a towing mechanism (14).

2. A screw conveying tube for an automatic screw machine according to claim 1, Features: The traction mechanism (14) is composed of a supporting base plate (15), a vertical rod (19), a catheter housing (23) and an inner rotating disk (24); vertical rods (19) are fixedly installed on both sides of the top of the supporting base plate (15); sliding sleeves (20) are slidably sleeved on the outside of the two vertical rods (19); and support plates (21) are fixedly connected to one side of the two sliding sleeves (20).

3. A screw conveying tube for an automatic screw machine according to claim 2, Features: The top end of the support plate (21) is fixedly connected to a support rod (22), and the top end of the support rod (22) is fixedly connected to a catheter housing (23) arranged on the top of the supporting base plate (15), and an annular sliding groove is provided inside the catheter housing (23), and an inner rotating disk (24) is slidably connected inside the annular sliding groove.

4. A screw conveying tube for an automatic screw machine according to claim 3, Features: A rubber inner ring is fixedly installed on the inner ring of the inner turntable (24). A side hole is formed on one side of the inner turntable (24). A side groove (25) is formed on one side of the catheter housing (23), and the width of the side groove (25) is matched with that of the side hole.

5. A screw delivery pipe for an automatic screwdriver according to claim 2, characterized in that: A bottom plate (34) is fixedly installed at the bottom end of the support bottom plate (15), and a magnetic adsorption plate (35) is fixedly installed at the bottom end of the bottom plate (34).

6. A screw delivery pipe for an automatic screwdriver according to claim 2, characterized in that: One side of the bottom of the vertical rod (19) is fixedly connected to a cross bar (18). An electric hydraulic cylinder (16) is fixedly installed at the top end of the cross bar (18), and the output end of the electric hydraulic cylinder (16) is fixedly connected to the bottom end of the catheter housing (23). The bottom end of the cross bar (18) is movably installed with a laser seat (17) through a pin shaft. A laser generator (33) is fixedly installed at one end of the laser seat (17). An indicating disc (32) is fixedly installed in the middle of the top end of the support bottom plate (15).

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