A new screw machine

Abstract

The application relates to the technical field of screw locking equipment, in particular to a novel screw machine which comprises a back seat, an electric driver and a clamp nozzle mounted on the back seat, the clamp nozzle is fixed to the back seat, the electric driver is installed above the clamp nozzle and can be controlled to ascend and descend, a nail feeding guide pipe is connected to the clamp nozzle, a negative pressure sleeve pipe with a top sealing portion is arranged on the outer sleeve of the electric driver, the bottom of the screw driver of the electric driver extends to a position close to the bottom of the negative pressure sleeve pipe, and the screw driver on the electric driver and the bottom of the negative pressure sleeve pipe extend into the clamp nozzle together. During work, screws are fed into the clamp nozzle along the nail feeding guide pipe. Then the electric driver preliminarily moves downwards until the negative pressure sleeve pipe approaches the screw position in the clamp nozzle, at this moment, the screw is sucked on the screw driver through the negative pressure sleeve pipe. Finally, the electric driver drives the negative pressure sleeve pipe and the screw driver to continuously move downwards to perform screw locking work. The working mode realizes air blowing type screw feeding and air suction type screw locking, the working efficiency is high, and screw locking work can be performed on a position with narrow space.

Description

Technical Field

[0001] This application relates to the field of screw fastening equipment technology, and in particular to a novel screw fastening machine. Background Technology

[0002] Automatic screw fastening equipment is widely used in industries such as home appliances, automobiles, and electronic communications. Currently, automatic screw fastening equipment on the market is generally divided into two types: air-blowing and air-suction. In air-blowing screw fastening equipment, an air-blowing feeder blows screws through a feeding guide into the screw clamp, and then a cylinder drives an electric screwdriver downwards to fasten the screw. In air-suction screw fastening equipment, a telescopic mechanism drives a negative pressure sleeve to move up and down. A vacuum connector is attached to the side wall of the sleeve mechanism. A servo screw drives a suction head to pick up the screw at the screw picking point, and then moves it to the product fastening point to fasten the screw.

[0003] However, in actual operation, while air-blowing screw fastening equipment is highly efficient, it has limitations. Smaller screws may become misaligned when blown into the clamp, leading to improper screw fastening. Furthermore, some products have narrow fastening positions that the clamp cannot reach, preventing fastening. Suction screw fastening equipment is more versatile, but its efficiency is too low due to the need for material handling. Therefore, further improvements are warranted. Utility Model Content

[0004] In order to enable screw fastening in confined spaces while ensuring processing efficiency, this application provides a novel screw fastening machine.

[0005] The novel screw-making machine provided in this application adopts the following technical solution:

[0006] A novel screwdriver includes a backrest and an electric screwdriver and a clamp mounted on the backrest. The clamp is fixedly mounted on the backrest, and the electric screwdriver is mounted above the clamp and can be raised and lowered. A screw feeding guide is connected to the clamp for feeding screws into the clamp. The electric screwdriver has a negative pressure sleeve with a top-sealed end installed on its screwdriver blade. The bottom of the screwdriver blade extends to a position close to the bottom of the negative pressure sleeve, and the bottom of the screwdriver blade and the negative pressure sleeve extend together into the clamp.

[0007] By adopting the above technical solution, during operation, the screw is fed into the screwdriver holder via airflow through the feed tube. The electric screwdriver then initially moves downwards until the negative pressure sleeve and screwdriver move down along the holder to near the screw position. At this point, the negative pressure sleeve holds the screw onto the screwdriver. Finally, the electric screwdriver drives the negative pressure sleeve and screwdriver further down to the working position to drive the screw in. This working method achieves both air-blowing screw feeding and air-suction screw driving, which is not only highly efficient but also allows for screw-locking in confined spaces.

[0008] Optionally, the clamp includes an intermediate base and two sealing nozzles symmetrically installed on both sides of the intermediate base. A guide channel is formed in the middle of the intermediate base for guiding the negative pressure sleeve through. The tops of the two sealing nozzles are rotatably connected to the two sides of the intermediate base, and the bottoms of the two sealing nozzles extend to the bottom of the intermediate base and seal the guide channel after being engaged. A first return spring is installed between the sealing nozzles and the intermediate base to force the two sealing nozzles to return to their original position. The bottoms of the two sealing nozzles form a nail preparation hole after being engaged. The nail preparation hole gradually decreases in size from top to bottom, and the top of the nail preparation hole allows the negative pressure sleeve to pass through, while the bottom of the nail preparation hole only allows the screw shank to pass through. A screw guide is installed on the intermediate base, the nail feeding guide is connected to the top of the screw guide, and the bottom of the screw guide extends and is aligned with the nail preparation hole.

[0009] By adopting the above technical solution, during operation, the screw is fed into the clamp along the screw guide and falls into the spare screw hole. After an initial downward movement, the negative pressure sleeve and screwdriver enter the spare screw hole, and under negative pressure, they hold the screw. After further downward movement, the two sealing nozzles are opened to hold the screw and allow it to pass through the clamp for subsequent screw-driving actions. Similarly, after the negative pressure sleeve and screwdriver retract, the two sealing nozzles reset and align, awaiting the next screw to be placed.

[0010] Optionally, the top of the screw guide tube is rotatably connected to the intermediate base, and a second return spring is installed between the screw guide tube and the intermediate base to force the bottom of the screw guide tube to rotate inward into the intermediate base; a limiting member is installed on the outer side of the bottom of the screw guide tube to limit and position it when the bottom of the screw guide tube is aligned with the nail hole.

[0011] By adopting the above technical solution, during operation, because the bottom of the screw guide is aligned with the pre-screw hole, the screw can be fed into the clamp along the screw guide and then fall into the pre-screw hole. When the negative pressure sleeve and screwdriver initially move downwards together, they push the screw guide outwards into the pre-screw hole. When the negative pressure sleeve and screwdriver retract, under the action of the second return spring, the bottom of the screw guide resets and realigns with the pre-screw hole, awaiting the next screw to be placed.

[0012] Optionally, an adapter is installed at the top of the screw guide tube, and the screw feeding guide tube is connected to the screw guide tube through the adapter; the adapter is fixedly installed on the intermediate base, the bottom of the adapter is formed with a spherical opening, the top of the screw guide tube is spherical, and the top of the screw guide tube is connected to the bottom spherical surface of the adapter.

[0013] By adopting the above technical solution, since the top of the screw guide tube is connected to the bottom spherical surface of the adapter, the screw guide tube always maintains a connection and fit with the adapter during the swinging process.

[0014] Optionally, the top of the adapter is threaded with a quick connector for quick connection of the nail feeding conduit.

[0015] By adopting the above technical solution, and by connecting a quick connector to the top thread of the adapter, the fastening and assembly of the nail feeding guide can be achieved during the assembly process.

[0016] Optionally, the quick connector includes a nut and a retaining ring installed inside the nut; the top of the retaining ring is engaged with the nut, and the bottom of the retaining ring is pressed against the top inner wall of the connector, and when the nut is screwed down, the retaining ring is tightened along the top inner wall.

[0017] By adopting the above technical solution, when assembling the nail feeding guide, the end of the nail feeding guide is inserted into the adapter along the retaining ring in the nut. Then, by screwing the nut downwards to tighten it, the retaining ring is moved to tighten along the top inner wall, thereby tightening the nail feeding guide. Conversely, when it is necessary to remove the nail feeding guide, the nut is screwed upwards to loosen it, causing the retaining ring to release the nail feeding guide, which can then be removed.

[0018] Optionally, the outer wall of the nut is formed with an anti-slip pattern.

[0019] By adopting the above technical solution and setting anti-slip patterns on the outer wall of the nut, it is possible to further facilitate the tightening or loosening of the nut.

[0020] Optionally, a sensor is also installed on the intermediate substrate to detect whether a screw is provided in the nail preparation hole.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. During operation, the screw is fed into the screwdriver holder by air through the feed tube. The electric screwdriver then initially moves downwards until the negative pressure sleeve and screwdriver move along the holder to near the screw. At this point, the negative pressure sleeve holds the screw onto the screwdriver. Finally, the electric screwdriver drives the negative pressure sleeve and screwdriver further downwards to the working position to drive the screw in. This working method achieves both air-blowing screw feeding and air-suction screw driving, which is not only highly efficient but also allows for screw-locking in confined spaces.

[0023] 2. During operation, the screw is fed into the clamp along the screw guide and falls into the spare screw hole. After an initial downward movement, the negative pressure sleeve and screwdriver enter the spare screw hole and, under negative pressure, hold the screw. Upon further downward movement, the two sealing nozzles are opened to hold the screw and allow it to pass through the clamp for subsequent screw-driving actions. Similarly, after the negative pressure sleeve and screwdriver retract, the two sealing nozzles reset and align, awaiting the next screw to be positioned.

[0024] 3. During operation, the bottom of the screw guide tube aligns with the spare screw hole, allowing the screw to be fed along the screw guide tube into the clamp and then into the spare screw hole. As the negative pressure sleeve and screwdriver initially move downwards together, they push the screw guide tube outwards into the spare screw hole. When the negative pressure sleeve and screwdriver retract, the bottom of the screw guide tube resets under the action of the second return spring, realigning with the spare screw hole to prepare for the next screw to be placed. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of a novel screw machine according to this application.

[0026] Figure 2 This is a schematic diagram of the clamping part in this application.

[0027] Figure 3 Yes Figure 2 A cross-sectional view.

[0028] Figure 4 Yes Figure 2 A longitudinal sectional view.

[0029] Figure 5 This is a cross-sectional view of the top part of the screw guide in the clamp.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Backrest; 2. Electric screwdriver; 3. Gripper; 31. Intermediate base; 32. Sealing nozzle; 33. Guide channel; 34. First return spring; 35. Nail preparation hole; 36. Screw guide; 361. Second return spring; 362. Limiting component; 37. Sensor; 38. Adapter; 381. Spherical opening; 39. Quick connector; 391. Nut; 392. Snap ring; 393. Anti-slip pattern; 4. Nail feeding guide; 5. Negative pressure sleeve. Detailed Implementation

[0032] The present application will be further described in detail below with reference to the accompanying drawings 1-5.

[0033] This application discloses a novel screw-making machine.

[0034] Reference Figure 1 A novel screwdriver includes a backrest 1, an electric screwdriver 2, and a clamp 3 mounted on the backrest 1. The clamp 3 is fixedly mounted on the backrest 1, and the electric screwdriver 2 is mounted above the clamp 3 and can be raised and lowered. A screw feed guide 4 is connected to the clamp 3 for feeding screws into the clamp 3. The electric screwdriver 2 has a negative pressure sleeve 5 with a sealed top mounted on its screwdriver blade, and the negative pressure sleeve 5 is connected to a vacuum connector. The bottom of the screwdriver blade of the electric screwdriver 2 extends to a position close to the bottom of the negative pressure sleeve 5, and the screwdriver blade on the electric screwdriver 2 and the bottom of the negative pressure sleeve 5 extend together into the clamp 3.

[0035] During operation, the screw is fed into the screwdriver holder 3 via air blowing through the screw feed guide 4. Then, the electric screwdriver 2 initially moves downwards until the negative pressure sleeve 5 and the screwdriver move down along the holder 3 to near the screw position. At this point, negative pressure is applied to the negative pressure sleeve 5 through the vacuum connector to suck the screw onto the screwdriver. Finally, the electric screwdriver 2 drives the negative pressure sleeve 5 and the screwdriver further down to the working position to drive the screw in. This working method achieves both air-blowing screw feeding and air-suction screw driving, which is not only highly efficient but also allows for screw-locking in confined spaces.

[0036] In this embodiment, the electric screwdriver 2 is controlled to lift and lower using a linear motor module.

[0037] Reference Figure 2-4 Specifically, in this embodiment, the clamp 3 includes a central base 31 and two sealing nozzles 32 symmetrically mounted on both sides of the central base 31. A guide channel 33 is formed in the center of the central base 31 for guiding the negative pressure sleeve 5 through. The tops of the two sealing nozzles 32 are rotatably connected to the two sides of the central base 31, and the bottoms of the two sealing nozzles 32 extend below the central base 31 and, after being engaged, seal the guide channel 33. A first return spring 34 is installed between the sealing nozzles 32 and the central base 31 to force the two sealing nozzles 32 to return to their original position. After being engaged, the bottoms of the two sealing nozzles 32 form a nail preparation hole 35, which gradually decreases in size from top to bottom. The top of the nail preparation hole 35 allows the negative pressure sleeve 5 to pass through, while the bottom of the nail preparation hole 35 allows only the shank of a screw to pass through. A screw guide tube 36 is installed on the intermediate base 31, and a screw feeding guide tube 4 is connected to the top of the screw guide tube 36. The bottom of the screw guide tube 36 extends and is aligned with the screw preparation hole 35.

[0038] During operation, the screw is fed into the clamping nozzle 3 along the screw guide tube 36 and then falls into the screw preparation hole 35. After an initial downward movement, the negative pressure sleeve 5 and the screwdriver enter the screw preparation hole 35, and under negative pressure, they hold the screw. Upon further downward movement, the two sealing nozzles 32 are opened to hold the screw and allow it to pass through the clamping nozzle 3 for subsequent screw-driving actions. Similarly, after the negative pressure sleeve 5 and the screwdriver retract, the two sealing nozzles 32 reset and align, awaiting the next screw to be placed.

[0039] Reference Figure 2 In this embodiment, a sensor 37 is also installed on the intermediate substrate 31. The sensor 37 is installed on both sides of the sealing nozzle 32 and is aligned with the position below the nail hole 35 formed when the nozzle is closed, for detecting whether there is a screw in the nail hole 35.

[0040] Reference Figure 2 and Figure 4Specifically, in this embodiment, the top of the screw guide 36 is rotatably connected to the intermediate base 31. A second return spring 361 is installed between the screw guide 36 and the intermediate base 31, and the second return spring 361 is pressed against the outside of the screw guide 36 to force the bottom of the screw guide 36 to rotate inward into the intermediate base 31. A limiting member 362 is installed on the outer side of the bottom of the screw guide 36. When the bottom of the screw guide 36 is aligned with the nail hole 35, the limiting member 362 is locked against the outside of the intermediate base 31 for limiting and positioning.

[0041] During operation, the bottom of the screw guide tube 36 is aligned with the pre-screw hole 35, allowing the screw to be fed along the screw guide tube 36 into the clamp 3 and then into the pre-screw hole 35. As the negative pressure sleeve 5 and the screwdriver initially move downwards together, they push the screw guide tube 36 outwards and into the pre-screw hole 35. When the negative pressure sleeve 5 and the screwdriver retract, the bottom of the screw guide tube 36 resets under the action of the second return spring 361, realigning with the pre-screw hole 35 to prepare for the next screw to be inserted.

[0042] Reference Figure 4 and Figure 5 In this embodiment, an adapter 38 is installed on the top of the screw guide tube 36, and the screw feeding guide tube 4 is connected to the screw guide tube 36 through the adapter 38. The adapter 38 is fixedly installed on the intermediate base 31, and the bottom of the adapter 38 is formed with a spherical opening 381. The top of the screw guide tube 36 is spherical, and the top of the screw guide tube 36 is connected to the bottom spherical surface of the adapter 38, so that the screw guide tube 36 always maintains a connection and fit with the adapter 38 during the swinging process.

[0043] Reference Figure 4 and Figure 5 In this embodiment, the top of the adapter 38 is threaded with a quick connector 39 for quick connection of the nail feeding guide 4. The quick connector 39 includes a nut 391 and a retaining ring 392 installed inside the nut 391. The top of the retaining ring 392 is engaged with the nut 391, and the bottom of the retaining ring 392 is pressed against the top inner wall of the adapter 38. When the nut 391 is screwed down, the retaining ring 392 is tightened along the top inner wall.

[0044] When assembling the rivet delivery guide 4, insert the end of the rivet delivery guide 4 into the adapter 38 along the retaining ring 392 in the nut 391. Then, tighten the nut 391 downwards, causing the retaining ring 392 to tighten along the top inner wall, thereby tightening the rivet delivery guide 4. Conversely, when it is necessary to remove the rivet delivery guide 4, unscrew the nut 391 upwards to loosen the retaining ring 392, allowing the rivet delivery guide 4 to be removed. This enables quick connection of the rivet delivery guide 4.

[0045] Reference Figure 5In this embodiment, the outer wall of the nut 391 is formed with anti-slip pattern 393, which can further facilitate the tightening or loosening of the nut 391.

[0046] The operating principle is as follows: During operation, the screw is fed into the screwdriver holder 3 via air blowing through the screw feed guide 4. Then, the electric screwdriver 2 initially moves downwards until the negative pressure sleeve 5 and the screwdriver move down along the holder 3 to near the screw position. At this point, negative pressure is applied to the negative pressure sleeve 5 through the vacuum connector to suck the screw onto the screwdriver. Finally, the electric screwdriver 2 drives the negative pressure sleeve 5 and the screwdriver to continue moving downwards to the working position to drive the screw. This operating method achieves both air-blowing screw feeding and air-suction screw driving, which is not only highly efficient but also allows for screw-locking in confined spaces.

[0047] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A novel screw-making machine, characterized in that: It includes a backrest (1) and an electric screwdriver (2) and a clamp (3) mounted on the backrest (1). The clamp (3) is fixedly mounted on the backrest (1), and the electric screwdriver (2) is mounted above the clamp (3) and can be raised and lowered. The clamp (3) is connected to a screw feeding guide (4) for feeding screws into the clamp (3); the electric screwdriver (2) has a negative pressure sleeve (5) with a top seal installed on its screwdriver, the bottom of the screwdriver of the electric screwdriver (2) extends to a position close to the bottom of the negative pressure sleeve (5), and the screwdriver on the electric screwdriver (2) and the bottom of the negative pressure sleeve (5) extend together into the clamp (3).

2. The novel screw-making machine according to claim 1, characterized in that: The clamp (3) includes an intermediate base (31) and sealing nozzles (32) symmetrically installed on both sides of the intermediate base (31). A guide channel (33) is formed in the middle of the intermediate base (31) for guiding the negative pressure sleeve (5) through. The tops of the two sealing nozzles (32) are rotatably connected to the two sides of the intermediate base (31), and the bottoms of the two sealing nozzles (32) extend to the bottom of the intermediate base (31) and are sealed in the guide channel (33) after being closed. A first return spring (3) is installed between the sealing nozzles (32) and the intermediate base (31). 4) is used to force the two sealing nozzles (32) to reposition and engage; the bottom of the two sealing nozzles (32) forms a nail preparation hole (35) after engagement, the nail preparation hole (35) gradually decreases in size from top to bottom, and the top of the nail preparation hole (35) can be inserted by a negative pressure sleeve (5), and the bottom of the nail preparation hole (35) can only be inserted by the shank of the screw; a screw guide tube (36) is installed on the intermediate base (31), the nail feeding guide tube (4) is connected to the top of the screw guide tube (36), and the bottom of the screw guide tube (36) extends and is aligned with the nail preparation hole (35).

3. A novel screw-making machine according to claim 2, characterized in that: The top of the screw guide (36) is rotatably connected to the intermediate base (31). A second return spring (361) is installed between the screw guide (36) and the intermediate base (31) to force the bottom of the screw guide (36) to rotate inward into the intermediate base (31). A limiting member (362) is installed on the outer side of the bottom of the screw guide (36) to limit and position the screw guide (36) when the bottom of the screw guide (36) is aligned with the nail hole (35).

4. A novel screw-making machine according to claim 3, characterized in that: The top of the screw conduit (36) is equipped with an adapter (38), and the screw feeding conduit (4) is connected to the screw conduit (36) through the adapter (38). The adapter (38) is fixedly installed on the intermediate base (31), and the bottom of the adapter (38) is formed with a spherical opening (381). The top of the screw conduit (36) is spherical, and the top of the screw conduit (36) is connected to the bottom spherical surface of the adapter (38).

5. A novel screw-making machine according to claim 4, characterized in that: The top of the adapter (38) is threaded with a quick connector (39) for quick connection to the nail feeding conduit (4).

6. A novel screw-making machine according to claim 5, characterized in that: The quick connector (39) includes a nut (391) and a retaining ring (392) installed inside the nut (391); the top of the retaining ring (392) is engaged with the nut (391), the bottom of the retaining ring (392) is pressed against the top inner wall of the adapter (38), and when the nut (391) is screwed down, the retaining ring (392) is tightened along the top inner wall.

7. A novel screw-making machine according to claim 6, characterized in that: The outer wall of the nut (391) is formed with anti-slip patterns (393).

8. A novel screw-making machine according to claim 2, characterized in that: A sensor (37) is also installed on the intermediate substrate (31) to detect whether there is a screw in the nail preparation hole (35).

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