Blowing and sucking type screw locking structure

Abstract

The utility model relates to the technical field of screw locking, and discloses a blowing and sucking type screw locking structure which comprises a bottom plate, an air cylinder, an electric screwdriver motor, a fixed seat and a sliding seat, a guide rail is integrally arranged in the middle of the top end of the bottom plate, the fixed seat is installed in the middle of the guide rail, and the sliding seat slides at one end of the guide rail. A fixing rod is connected between the sliding seat and the fixing seat, a push plate is installed at the output end of the air cylinder, one end of the push plate is connected with the sliding seat, a screw chuck is installed on one side of the top end of the bottom plate, the electric screwdriver motor is installed on the top of the sliding seat, and a screwdriver rod is arranged at the output end of the electric screwdriver motor. A suction rod is installed in the middle of the fixing base, and the interior of the suction rod is designed to be hollow. According to the utility model, the single cylinder is used and is matched with the elastic connecting structure, so that the effect of combined action of double cylinders is realized. The whole structure is simple, space is reduced, control is simplified, the device is more suitable for automatic application, and cost is reduced for customers.

Description

Technical Field

[0001] This utility model relates to the field of screw fastening technology, and in particular to a blow-suction type screw fastening structure. Background Technology

[0002] Currently, screw fastening machines on the market use a blow-suction fastening mechanism. The screw feeder blows the screw into the chuck, and then a suction rod hidden inside the chuck pushes out to hold the screw and send it to a deeper fastening position. This structure combines the advantages of both blow-and-suction types, is compatible with most screw sizes, can be applied to a wider range of scenarios, and is also highly efficient.

[0003] Conventional blow-suction structures use two sets of cylinders linked together to ensure smooth switching between screw supply and screw fastening. The overall structure is relatively large, making it unsuitable for confined spaces. It is also costly and not conducive to the development of automated equipment.

[0004] Therefore, those skilled in the art have provided a blow-suction type screw fastening structure to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a blow-suction type screw-locking structure. By using a single cylinder in conjunction with an elastic connection structure, it achieves the effect of dual-cylinder combined action. This simplifies the overall structure, reduces space requirements, simplifies control, and makes it more suitable for automation applications, thereby reducing costs for customers.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A blow-suction type screw fastening structure includes a base plate, a cylinder, an electric screwdriver motor, a fixed base, and a sliding base. A guide rail is integrally formed at the top center of the base plate. The fixed base is installed in the middle of the guide rail, and the sliding base slides on one end of the guide rail. A fixing rod connects the sliding base and the fixed base. A push plate is installed at the output end of the cylinder, and one end of the push plate is connected to the sliding base. A screw chuck is installed on one side of the top of the base plate. The electric screwdriver motor is installed on the top of the sliding base, and a screwdriver rod is provided at the output end of the electric screwdriver motor. A suction rod is installed in the middle of the fixed base, and the suction rod is hollow inside. The screwdriver rod is inserted inside the suction rod. A vacuum connector is installed at one end of the suction rod, and the other end of the suction rod is connected to the screw chuck. A feed cylinder is installed on one side of the screw chuck, and two clamping plates are symmetrically installed at one end of the screw chuck.

[0008] The above technical solution first uses compressed air from the feeder to deliver the screw from the air pipe to the front end of the screw chuck. At this point, the suction rod is located at the rear end of the screw chuck and has not yet contacted the screw. Then, the vacuum of the suction rod is activated, and the cylinder pushes it forward, causing the suction rod to extend and engage the screw. The suction rod continues to extend, opening the screw chuck and reaching the locking height. At this point, the suction rod cannot extend further, and the cylinder has not reached the end of its stroke. The push rod continues to extend, pushing the electric screwdriver bit to compress the first compression spring, causing the bit to extend from the front end of the suction rod and engage with the screw head, rotating and ultimately completing the locking action. This structure uses a single cylinder, combined with a flexible connection structure, to achieve the effect of a dual-cylinder combined action. This simplifies the overall structure, reduces space, simplifies control, and makes it more suitable for automation applications, reducing costs for customers.

[0009] Furthermore, a screw guide block is installed on one side of the screw chuck, and a torsion spring is installed on one side of the screw guide block;

[0010] The above technical solution provides a screw guide block installed on one side of the screw chuck to facilitate the restriction of the screw position, and a torsion spring installed on one side of the screw guide block to facilitate the reset of the screw guide block.

[0011] Furthermore, a limiting block is installed on one side of the screw chuck, and one end of the limiting block is engaged with both ends of the clamping piece;

[0012] The above technical solution involves installing a limiting block on one side of the screw chuck, with one end of the limiting block engaging with both ends of the clamping plate, thereby restricting the screw chuck.

[0013] Furthermore, a first compression spring is provided at the bottom end of one end of the upper half of the clamping piece;

[0014] The above technical solution provides a first compression spring at the bottom of one end of the upper clamping piece, which can temporarily keep the screw at the front end of the clamping piece.

[0015] Furthermore, a second compression spring is installed between the output end of the cylinder and the push plate;

[0016] By using the above technical solution, a second compression spring is installed between the output end of the cylinder and the push plate, which can buffer and reduce the cylinder thrust, and avoid the excessive pressure applied by the screwdriver bit to the screw during the locking process, which would generate excessive resistance torque and prevent the electric screwdriver from rotating.

[0017] This utility model has the following beneficial effects:

[0018] 1. This utility model proposes a blow-suction type screw fastening structure. First, compressed air from a feeder delivers the screw from the air pipe to the front end of the screw chuck. At this point, the suction rod is located at the rear end of the screw chuck and has not yet contacted the screw. Then, the vacuum of the suction rod is activated, and a cylinder pushes it forward, causing the suction rod to extend and simultaneously suck up the screw upon contact. The suction rod continues to extend forward, opening the screw chuck and reaching the fastening height. At this point, the suction rod cannot extend further, and the cylinder has not reached the end of its stroke. The push rod continues to extend forward, pushing the electric screwdriver bit to compress the first compression spring, causing the bit to extend from the front end of the suction rod and contact the screw head, engaging and rotating, ultimately completing the fastening action. This structure uses a single cylinder, combined with an elastic connection structure, to achieve the effect of a dual-cylinder combined action. This simplifies the overall structure, reduces space, simplifies control, and makes it more suitable for automated applications, reducing costs for customers. Attached Figure Description

[0019] Figure 1 This is an orthographic view of a blow-suction type screw fastening structure proposed in this utility model;

[0020] Figure 2 This is a left axonometric view of a blow-suction type screw fastening structure proposed in this utility model;

[0021] Figure 3 This is a right axonometric view of a blow-suction type screw fastening structure proposed in this utility model;

[0022] Figure 4 This is an isometric view of a screw chuck with a blow-suction type screw locking structure proposed in this utility model.

[0023] Legend:

[0024] 1. Base plate; 2. Cylinder; 3. Fixed seat; 4. Fixed rod; 5. Sliding seat; 6. Push plate; 7. Electric screwdriver motor; 8. Screwdriver bar; 9. Suction rod; 10. Vacuum connector; 11. Screw chuck; 12. Clamping plate; 13. First compression spring; 14. Screw guide block; 15. Torsion spring; 16. Feed cylinder; 17. Limiting block; 18. Guide rail; 19. Second compression spring. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Reference Figure 1-4This utility model provides an embodiment of a blow-suction type screw fastening structure, including a base plate 1, a cylinder 2, an electric screwdriver motor 7, a fixed seat 3, and a sliding seat 5. A guide rail 18 is integrally formed at the center of the top of the base plate 1. The fixed seat 3 is installed in the center of the guide rail 18. The sliding seat 5 slides on one end of the guide rail 18. A fixing rod 4 connects the sliding seat 5 and the fixed seat 3. A push plate 6 is installed at the output end of the cylinder 2, and one end of the push plate 6 is connected to the sliding seat 5. A screw chuck 11 is installed on one side of the top of the base plate 1. The electric screwdriver motor 7 is installed on the top of the sliding seat 5. The output end of the electric screwdriver motor 7 is equipped with a screwdriver bar 8, and a suction rod 9 is installed in the middle of the fixed base 3. The suction rod 9 is hollow inside, with the screwdriver bar 8 inserted inside. One end of the suction rod 9 is equipped with a vacuum connector 10, and the other end is connected to a screw chuck 11. A feed cylinder 16 is installed on one side of the screw chuck 11, and two clamping plates 12 are symmetrically installed on one end of the screw chuck 11. First, the screw is fed from the air pipe to the front end of the screw chuck 11 by the feeder using compressed air. At this time, the suction rod 9 is located at the rear end of the screw chuck 11 and has not yet contacted the screw. Then, the vacuum of the suction rod is turned on, and it is pushed out by the cylinder 2, which drives the suction rod 9 to extend forward, contacting and holding the screw. The suction rod continues to extend forward, opening the screw chuck 11 and reaching the locking height. At this point, the suction rod 9 cannot extend further, and cylinder 2 has not reached the end of its stroke. The push rod continues to extend forward, pushing the electric screwdriver bit to compress the first compression spring 13, causing the bit to extend from the front end of the suction rod 9, contact and engage with the screw head, and rotate, ultimately completing the locking action. This structure uses a single cylinder, combined with an elastic connection structure, to achieve the effect of a dual-cylinder combined action. This makes the overall structure simple, reduces space, simplifies control, and is more suitable for automation applications, reducing costs for customers.

[0027] A screw guide block 14 is installed on one side of the screw chuck 11, and a torsion spring 15 is installed on one side of the screw guide block 14. The screw guide block 14 facilitates the restriction of the screw position, and the torsion spring 15 facilitates the reset of the screw guide block 14. A limit block 17 is installed on one side of the screw chuck 11, and one end of the limit block 17 is engaged with both ends of the clamping plate 12. The screw guide block 14 allows for the restriction of the screw position. The screwdriver bit 11 is used for restraint. A first compression spring 13 is provided at the bottom end of one end of the upper half clamping plate 12. The compression spring can temporarily keep the screw at the front end of the clamping plate 12. A second compression spring 19 is installed between the output end of the cylinder 2 and the push plate 6. By installing the second compression spring 19 between the output end of the cylinder 2 and the push plate 6, the thrust of the cylinder 2 can be buffered and reduced, so as to avoid the bit applying too much pressure to the screw during the locking process, which would generate too much resistance torque and prevent the electric screwdriver from rotating.

[0028] Working Principle: First, compressed air from the feeder delivers the screw from the air pipe to the front end of the screw chuck 11. At this point, the suction rod is located at the rear end of the screw chuck 11 and has not yet contacted the screw. Then, the vacuum of the suction rod is activated, and the cylinder 2 pushes it out, causing the suction rod 9 to extend forward. Upon contacting the screw, the suction rod 9 pulls it in place. The suction rod 9 continues to extend forward, opening the screw chuck 11 and reaching the locking height. At this point, the suction rod 9 cannot extend further, and the cylinder 2 has not reached the end of its stroke. The push rod continues to extend forward, pushing the electric screwdriver bit to compress the first compression spring 13, causing the bit to extend from the front end of the suction rod 9 and contact the screw head, engaging and rotating, ultimately completing the locking action. This structure uses a single cylinder, combined with a flexible connection structure, to achieve the effect of a dual-cylinder combined action. This simplifies the overall structure, reduces space, simplifies control, and makes it more suitable for automation applications, reducing costs for customers.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A blow-suction screw locking structure comprising a base plate (1) and a pneumatic cylinder (2) and an electric screwdriver motor (7) and a fixed seat (3) and a sliding seat (5), characterized in that: The middle part of the top end of the bottom plate (1) is integrally provided with a guide rail (18), the fixed seat (3) is installed in the middle part of the guide rail (18), the sliding seat (5) slides at one end of the guide rail (18), the fixed rod (4) is connected and arranged between the sliding seat (5) and the fixed seat (3), the output end of the air cylinder (2) is installed with a push plate (6), one end of the push plate (6) is connected with the sliding seat (5), one side of the top end of the bottom plate (1) is installed with a screw chuck (11), the electric screwdriver motor (7) is installed on the top of the sliding seat (5), the output end of the electric screwdriver motor (7) is provided with a screw rod (8), the middle part of the fixed seat (3) is installed with a suction rod (9), and the inside of the suction rod (9) is designed in a hollow shape, the screw rod (8) is inserted in the inside of the suction rod (9), one end of the suction rod (9) is installed with a vacuum connector (10), the other end of the suction rod (9) is connected with the screw chuck (11), one side of the screw chuck (11) is installed with a feeding cylinder (16), and two clamping pieces (12) are symmetrically installed at one end of the screw chuck (11).

2. The blow-suction type screw fastening structure according to claim 1, characterized in that: One side of the screw chuck (11) is installed with a screw guide block (14), one side of the screw guide block (14) is installed with a torsional spring (15).

3. The blow-suction type screw fastening structure according to claim 1, wherein: One side of the screw chuck (11) is installed with a limiting block (17), and one end of the limiting block (17) is clamped at both ends of the clamping piece (12).

4. The blow-suction type screw fastening structure according to claim 1, wherein: The first compression spring (13) is arranged at one end of the bottom end of the clamping piece (12).

5. The blow-suction type screw fastening structure according to claim 1, wherein: The second compression spring (19) is arranged between the output end of the air cylinder (2) and the push plate (6).

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