CN201366613Y - Screw clamping device of automatic screw fastening machine - Google Patents

Abstract

The utility model provides an automatic screw fastening machine screw clamping device which characterized in that: the novel screwdriver is characterized by comprising a main body block (1) with a screwdriver inserting hole (14) in the center, symmetrical clamping jaws (2) are connected to two side shafts of the main body block (1), a spring (3) is arranged between each clamping jaw (2) and the main body block (1), screw placing holes (10) with inclined planes (11) are formed at the positions close to the lower ends of the two symmetrical clamping jaws (2), inclined holes (8) are formed in the side edges of the main body block (1) and communicated with the screwdriver inserting hole (14), a movable block (6) connected with the main body block (1) through a shaft is arranged opposite to the inclined holes (8) in the main body block (1), tension springs (5) are arranged between the movable block (6) and the main body block (1), and inclined edges (9) arranged on the movable block (6) are matched with the inclined holes (8). The device has the advantages of flexible and reliable clamping action, smooth screw entering, no overturning and no blocking, improves the working efficiency and reduces the processing cost of the workpiece.

Description

Automatic screw fastening machine screw clamping device

technical field

The utility model relates to a screw clamping device of an automatic screw fastening machine. It is used to clamp the screws used for fastening when the automatic screw fastening machine is working.

Background technique

In industrial production, it is often necessary to connect or fix various parts of products by screws. The traditional fastening method is to fasten one by one with a screwdriver. Due to the limitation of working methods, the defective rate is high, and it is time-consuming and laborious, which is not conducive to large-scale production.

When the existing automatic screw fastening machines on the market separate the screws and feed them into the screw clamping mechanism, due to structural problems, the screws often get stuck in the clamping mechanism and cause the work to stop, especially for shorter screws, because Possibly flipped during feeding, more prone to such failures.

Contents of the invention

The purpose of the utility model is to provide a screw clamping device of an automatic screw fastening machine with flexible, reliable, smooth clamping action, no jamming phenomenon and high working efficiency before the screw is tightened, so as to overcome the shortcomings of the prior art.

The screw clamping device of the automatic screw fastening machine of the present utility model is characterized in that it includes a main body block 1 with a screwdriver insertion hole 14 in the center, and symmetrical jaws 2 are axially connected to both sides of the main body block 1, each jaw 2 and the main block 1 are provided with a spring 3, and the lower ends of the two symmetrical jaws 2 are close to form a screw placement hole 10 with a bevel 11, and an inclined hole 8 is provided on the side of the main block 1 to insert a screwdriver. The hole 14 communicates, and the opposite side of the inclined hole 8 on the main body block 1 is provided with a movable block 6 that is axially connected with the main body block 1, and an extension spring 5 is provided between the movable block 6 and the main body block 1, and the movable block 6 is provided with The hypotenuse 9 coincides with the oblique hole 8.

Compared with the prior art, the screw clamping device of the automatic screw fastening machine of the utility model has symmetrically arranged jaws that can be opened and merged, and the inner side of the jaws is provided with a slope, which is matched with the inclined hole where the screw enters. The movable block with beveled edge makes the connection between the inclined hole and the screwdriver insertion hole form a standard screw introduction hole, so it has the advantages of flexible and reliable clamping action, smooth screw entry, no overturning, and no jamming, which improves work efficiency. The processing cost of the workpiece is reduced.

Description of drawings

Fig. 1 is the outline structural representation of the specific embodiment of the utility model;

Fig. 2 is the main sectional schematic diagram of the specific embodiment of the utility model;

Fig. 3 is a schematic sectional view of A-A shown in Fig. 1;

FIG. 4 is a schematic diagram of the structure of the movable block 6 shown in FIG. 3 after the angle has been rotated.

Detailed ways

As shown in the figure: 1 is the main body block, a screwdriver insertion hole 14 is processed at the center line of the main body block 1, and two symmetrically arranged jaws 2 are connected with the rotating shaft 4 on both sides of the main body block 1, each jaw A spring 3 is installed between the upper end of the 2 and the main body block 1, and the spring 3 pushes the two jaws 2 against each other, making the lower ends of the jaws 2 approach, and the lower ends of the jaws 2 approach to form a screw with an inclined surface 11. hole 10.

An oblique hole 8 is processed on the side of the main body block 1 on a plane perpendicular to the plane where the two jaws 2 are located, and the oblique hole 8 communicates with the screwdriver insertion hole 14 on the main body block 1 .

On the main body block 1, the opposite side of the inclined hole 8 is connected with the movable block 6 with the rotating shaft 12, the movable block 6 is fixed with the hanging shaft 7, and the extension spring 5 is articulated between the hanging shaft 7 and the main body block 1, and the extension spring 5 makes the The movable block 6 is inside the main body block 1 . The movable block 6 is processed with a hypotenuse 9 to coincide with the oblique hole 8, so that the intersection of the oblique hole 8 and the screwdriver insertion hole 14 is standardized, and the spatial shape does not change.

During installation, the clamping device is connected with the up-and-down moving mechanism, and the port of the inclined hole 8 is threadedly connected with a gas pipe joint 15, and is connected with the pneumatic screw supply device through the gas pipe joint 15. After the screw enters from the inclined hole 8, it smoothly enters the screw insertion hole 10, so that the screw cap is held up by the inclined surface 11, then the screwdriver is inserted from the screwdriver insertion hole 14, and at the same time, the clamping device moves downward, and the movable block 6 is held by the stop rod 13. Block and rotate a certain angle (as shown in Figure 4), avoid the screwdriver insertion hole 14, the end of the screwdriver can be in contact with the screw cap and rotate, so that the screw is screwed into the workpiece for fastening. There is an inclined surface 11, and the two jaws 2 can be forced to open and disengage from the screw at the same time, and the spring 3 is compressed when the jaws 2 are opened.

Claims (1)

1. A screw clamping device for an automatic screw fastening machine, characterized in that it includes a main body block (1) with a screwdriver insertion hole (14) in the center, and symmetrical clamps are axially connected to both sides of the main body block (1). Claws (2), springs (3) are provided between each clamping claw (2) and the main body block (1), and the lower ends of the two symmetrical clamping claws (2) are placed close to the screws forming a bevel (11) Hole (10), be provided with oblique hole (8) and be connected with screwdriver insertion hole (14) on the side of main body block (1), be positioned at the opposite side of oblique hole (8) on main body block (1) be provided with main body The movable block (6) connected by the shaft of the block (1) is provided with a tension spring (5) between the movable block (6) and the main body block (1), and the movable block (6) is provided with a hypotenuse (9) and an oblique hole (8) match.

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