Automatic screw feeding device

Abstract

The utility model provides an automatic screw feeding device which comprises a machine frame outer reverse screw mechanism, a funnel-shaped flow guide opening is formed in the bottom of the machine frame outer reverse screw mechanism, a discharging opening is formed in the first side wall of the funnel-shaped flow guide opening, and the inner side of the second side wall of the funnel-shaped flow guide opening is connected with the top of the discharging opening. Compressed air flows in the direction of the discharging port from the reverse screw mechanism outside the rack. And the discharge port is connected with a screw feeder through a tracheal catheter. According to the utility model, the charging operation can be completed without opening the rack of the equipment, so that the potential safety hazard is eliminated, the safety of operators is guaranteed, and the reliability and stability of the equipment are improved.

Description

Technical Field

[0001] This utility model relates to the field of electronic product assembly equipment technology, specifically to an automatic screw-adding device. Background Technology

[0002] With the rapid development of the electronics manufacturing industry, automated production has become the mainstream trend. In the assembly process of 3C electronic products, screw fastening is an indispensable step, and the screw feeder, as a key component of the automated screw fastening production line, directly affects production efficiency and product quality through its feeding efficiency and reliability.

[0003] Currently, traditional screw feeder feeding methods mainly rely on manual operation, where operators manually pour screws into the feeder's storage bin. This method has the following drawbacks: 1. Manual feeding is slow and requires frequent machine stops, severely restricting production rhythm and making it difficult to meet ever-increasing production demands. 2. Manual feeding is prone to long operation times and errors. 3. Manual feeding requires opening the equipment frame, posing certain safety hazards and increasing the risk of mechanical injury to operators. 4. Customer factories do not accept manual screw feeding.

[0004] Based on the above, this utility model proposes an automatic screw-adding device, which can effectively solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide an automatic screw-adding device. This invention allows for material feeding without opening the equipment frame, eliminating safety hazards, ensuring operator safety, and simultaneously improving the reliability and stability of the equipment.

[0006] This utility model provides an automatic screw-adding device, including an external screw-adding mechanism with a funnel-shaped guide port at the bottom. The funnel-shaped guide port has a discharge port on its first side wall, and the second side wall of the funnel-shaped guide port is connected to the top of the discharge port on its inner side. Compressed air flows through the external screw-adding mechanism towards the discharge port. The discharge port is connected to a screw feeder through an air pipe.

[0007] In one embodiment, the connection angle between the second sidewall of the funnel-shaped guide port and the discharge port is less than or equal to 180°.

[0008] In one embodiment, the external screw-down mechanism of the frame includes a central transition structure with an inner cavity capable of accommodating screws, a cap is provided at the top of the central transition structure, and the funnel-shaped guide port is provided at the bottom of the central transition structure.

[0009] In one embodiment, the external screw-down mechanism of the frame further includes a cylinder, the piston rod of which is fixedly connected to the cover and is used to drive the cover to slide on the central transition structure.

[0010] In one embodiment, a pressure relief structure is connected to the screw feeder, and the air tube is connected to the screw feeder through the pressure relief structure.

[0011] In one embodiment, the pressure relief structure includes a locking member fixed to the screw feeder, a conduit fitting is sleeved inside the locking member, a first port of the conduit fitting is connected to an air conduit fitting, a second port of the conduit fitting is connected to the screw feeder, an end cap is provided on the conduit fitting, and a pressure relief port is provided on the end cap.

[0012] In one embodiment, the maximum opening size of the pressure relief port is smaller than the minimum size of the screw thread outer diameter to prevent the screw from falling out of the pressure relief port.

[0013] In one embodiment, the end cap has multiple pressure relief ports, which are square, circular, trapezoidal or irregular in shape.

[0014] In one embodiment, the external screw mechanism of the frame is fixedly installed on the frame panel.

[0015] In one embodiment, the side wall of the external screw-down mechanism of the frame is connected to the air intake pipe via a solenoid valve.

[0016] The advantages of the automatic screw-adding device provided in this embodiment of the utility model are as follows:

[0017] This invention's automatic screw-feeding device significantly improves the production efficiency and safety of electronic product assembly equipment. Firstly, the automatic screw-feeding device avoids frequent downtime, significantly increasing production cycle time and meeting the ever-growing production demands. Secondly, it completes the screw feeding operation without opening the screw feeder, eliminating safety hazards, ensuring operator safety, and improving equipment reliability and stability. Furthermore, this invention addresses customer concerns about manual screw feeding, meeting their urgent need for automated production, and enhancing customer satisfaction and market competitiveness. In practical operation, the external screw-feeding mechanism of this invention can feed thousands of screws at once without causing blockages due to structural design, and no screws remain inside the pipe after blowing. By cleverly utilizing the end cap for pressure relief, it effectively prevents screw splashing caused by excessive air pressure. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A three-dimensional structural diagram of the automatic screw-adding device provided in the embodiment of this utility model;

[0020] Figure 2 A three-dimensional structural diagram of the external screw-down mechanism of the frame provided in an embodiment of this utility model;

[0021] Figure 3 An exploded view of the external screw-down mechanism of the frame provided in this embodiment of the utility model;

[0022] Figure 4 A cross-sectional view of the external screw-down mechanism of the frame provided in an embodiment of this utility model;

[0023] Figure 5 This is an assembly diagram of the screw feeder and pressure relief structure provided in an embodiment of the present utility model;

[0024] Figure 6 A cross-sectional view of the pressure relief structure provided in an embodiment of this utility model;

[0025] Figure 7 An exploded view of the pressure relief structure provided in an embodiment of this utility model.

[0026] Reference numerals in the attached drawings: 1-Outer screw-down mechanism of the frame; 2-Funnel-shaped guide port; 3-Inner cavity; 4-Outlet; 5-First side wall; 6-Second side wall; 7-Air pipe guide; 8-Middle transition structure; 9-Sealing cover; 10-Cylinder; 11-Pressure relief structure; 12-Screw feeder; 13-Locking component; 14-Guide component; 15-End cover; 16-Pressure relief port; 17-Frame panel; 18-First port; 19-Second port. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solution of this utility model, the preferred embodiments of this utility model are described below in conjunction with specific examples. However, it should be understood that the accompanying drawings are for illustrative purposes only and should not be construed as limiting the present utility model. For better illustration of this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable that some well-known structures and their descriptions may be omitted in the drawings for those skilled in the art. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting the present utility model.

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0029] like Figure 1 As shown, an automatic screw-adding device includes an external screw-adding mechanism 1 with a funnel-shaped guide port 2 at its bottom. The funnel-shaped guide port 2 has a discharge port 4 on its first side wall 5, and its second side wall 6 connects to the top of the discharge port 4 on its inner side. Compressed air flows through the external screw-adding mechanism 1 towards the discharge port 4. The discharge port 4 is connected to a screw feeder 12 via an air pipe 7. The air pipe 7 connects the external screw-adding mechanism 1 and the screw feeder 12, serving as a channel between the gas and the screw. The screw is moved within the pipe by the cooperation of compressed air with the smooth inner walls of the external screw-adding mechanism 1 and the air pipe 7.

[0030] like Figure 4 As shown, the connection angle between the second sidewall 6 of the funnel-shaped guide port 2 and the discharge port 4 is less than or equal to 180°. This invention places the discharge port 4 on the second sidewall 6 of the funnel-shaped guide port 2, with the top of the discharge port 4 connected to the second sidewall 6, which can prevent a large number of screws from clogging the funnel-shaped guide port 2 during its descent.

[0031] like Figure 2 and Figure 3 As shown, the external screw-down mechanism 1 of the frame includes a central transition structure 8 with an inner cavity 3 capable of accommodating screws. A cover 9 is provided at the top of the central transition structure 8, and a funnel-shaped guide port 2 is provided at the bottom of the central transition structure 8. The central transition structure 8 increases the stroke length of the screw-down mechanism, so that the screw can slide smoothly into the funnel-shaped guide port 2.

[0032] The external screw-down mechanism 1 of the frame also includes a cylinder 10, the piston rod of which is fixedly connected to the cover 9 and is used to drive the cover 9 to slide on the central transition structure 8. Specifically, the cylinder 7 drives the piston rod to open or close the cover 9 laterally. When the cover 9 is opened, a large number of screws can be inserted from the opening at once, and then the cover 9 is closed.

[0033] like Figure 5 As shown, the screw feeder 12 is connected to a pressure relief structure 11, and the air pipe 7 is connected to the screw feeder 12 through the pressure relief structure 11. The pressure relief structure 11 leaks a portion of the compressed air to balance the pressure difference and prevent screws from splashing.

[0034] like Figure 6 and Figure 7As shown, the pressure relief structure 11 includes a locking member 13 fixed to the screw feeder 12. A conduit member 14 is sleeved inside the locking member 13. The locking member 13 is used to fix the pressure relief structure 11 to the screw feeder cover plate. The first port 18 of the conduit member 14 is connected to the air conduit 7, and the second port 19 of the conduit member 14 is connected to the screw feeder 12. The conduit member 14 is used to smoothly introduce screws and compressed air into the screw feeder 12. An end cap 15 is provided on the conduit member 14, and a pressure relief port 16 is opened on the end cap 15.

[0035] Screws and compressed air enter the pressure relief structure 11 through the first port 18. After the compressed air is partially depressurized through the pressure relief port 16, the screws and some compressed air are smoothly introduced into the screw feeder 12 through the second port 19.

[0036] The maximum opening size of the pressure relief port 16 is smaller than the minimum size of the screw thread outer diameter to prevent the screw from falling out of the pressure relief port 16.

[0037] Multiple pressure relief ports 16 are provided on the end cap 15. The shape of the pressure relief ports 16 is one of square, round, trapezoidal or irregular shape.

[0038] The external screw-down mechanism 1 of the frame is fixedly installed on the frame panel 17. The frame panel 17 is not only used to fix the external screw-down mechanism 1 of the frame, but also serves as a closed panel for the equipment frame, thus isolating the interior from the exterior.

[0039] The side wall of the external screw-off mechanism 1 is connected to the air inlet pipe via a solenoid valve. Specifically, compressed air is blown into the external screw-off mechanism 1 from the solenoid valve. The compressed air passes through the external screw-off mechanism 1 and enters the air inlet pipe 7 from the funnel-shaped guide port 2, reaching the screw feeder 12 side.

[0040] Based on the description and drawings of this utility model, those skilled in the art can easily manufacture or use an automatic screw-adding device of this utility model, and can produce the positive effects described in this utility model.

[0041] Unless otherwise specified, in this utility model, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe orientation or positional relationships in this utility model are for illustrative purposes only and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the accompanying drawings and according to the specific circumstances.

[0042] Unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0043] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. An automatic screwing device, characterized in that: The rack outside screw falling mechanism is provided with a funnel-shaped flow guide opening at the bottom, the funnel-shaped flow guide opening is provided with a discharge port on a first side wall, and a second side wall of the funnel-shaped flow guide opening is connected to the top of the discharge port on the inner side; compressed air flows through the discharge port in the rack outside screw falling mechanism; and the discharge port is connected to a screw feeder through an air pipe.

2. The automatic screwing device according to claim 1, characterized in that: The connection angle between the second side wall of the funnel-shaped flow guide opening and the discharge port is less than or equal to 180°.

3. The automatic screwing device according to claim 1, characterized in that: The rack outside screw falling mechanism comprises a middle transition structure capable of containing screws in the inner cavity, a cover is arranged at the top of the middle transition structure, and the funnel-shaped flow guide opening is arranged at the bottom of the middle transition structure.

4. The automatic screwing device according to claim 3, characterized in that: The rack outside screw falling mechanism further comprises a gas cylinder, a piston rod of the gas cylinder is fixedly connected to the cover, and the cover is driven to slide on the middle transition structure.

5. The automatic screwing device according to claim 1, characterized in that: The screw feeder is connected to a pressure relief structure, and the air pipe is connected to the screw feeder through the pressure relief structure.

6. The automatic screwing device according to claim 5, characterized in that: The pressure relief structure comprises a locking piece fixedly connected to the screw feeder, a pipe piece is sleeved in the locking piece, a first port of the pipe piece is communicated with the air pipe, a second port of the pipe piece is communicated with the screw feeder, an end cover is arranged on the pipe piece, and a pressure relief port is formed in the end cover.

7. The automatic screwing device according to claim 6, characterized in that: The maximum opening size of the pressure relief port is smaller than the minimum size of the outer diameter of the screw thread, so as to prevent the screw from falling off from the pressure relief port.

8. The automatic screwing device according to claim 6, characterized in that: A plurality of pressure relief ports are formed in the end cover, and the pressure relief ports are in one of square, circular, trapezoidal and irregular shapes.

9. The automatic screwing device according to claim 1, characterized in that: The rack outside screw falling mechanism is fixedly installed on a rack panel.

10. The automatic screwing device according to claim 1, characterized in that: The side wall of the rack outside screw falling mechanism is connected to an air inlet pipe through an electromagnetic valve.

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