CN202412155U

CN202412155U - Clamping mouth capable of attracting screw onto screwdriver head for automatic screw machine

Info

Publication number: CN202412155U
Application number: CN2012200553364U
Authority: CN
Inventors: 孟祥甫
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-02-20
Filing date: 2012-02-20
Publication date: 2012-09-05
Anticipated expiration: 2022-02-20

Abstract

The utility model provides a clamping mouth capable of attracting a screw onto a screwdriver head for an automatic screw machine, which is characterized in that a clamping mouth seat is connected with a spiral mouth clamping mechanism; a rotating sleeve is arranged on the innermost side of the mechanism; three stoppers are embedded at the upper end of the rotating sleeve, and a spring is sleeved at the lower end of the rotating sleeve; a guide sleeve is sleeved on the outer side of the rotating sleeve; three spiral grooves are uniformly distributed on the side wall of the guide sleeve; while going downwards, the rotating sleeve can rotate in the guide sleeve, an outer sleeve is arranged on the outermost side of the rotating sleeve, and an inner hole of the outer sleeve is step-shaped and is used for constraining and releasing the stoppers, and the outer sleeve is connected with the clamping mouth seat. The screw can be meshed with a notch of the screwdriver head when passing thought the spiral mouth clamping mechanism and can extend together along with the screwdriver head under the action of magnetic suction. With the adoption of the structure, the clamping mouth can adapt to any locking environment and is wide in application.

Description

Aly can screw be drawn onto the automatic screw machine dop on the screwdriver bit

Technical field

The utility model relates to a kind of universal automatic locking filature and uses dop, is applicable to various desk-top and hand-held automatic locking filatures.

Background technology

Existing its principle of automatic locking filature is basic identical; Be divided into monomer after earlier screw being arranged exactly; Screw is blown in the dop of electric screwdriver subfacies with compressed air then and position; Electric screwdriver pressed down screw is backed down dop and locks in the workpiece when lock was paid, because screw is in runaway condition in the moment of backing down dop, so pay and must the end of dop be pressed close to workpiece as much as possible if will accomplish lock reliably; Darker counterbore or step are arranged or higher barrier is arranged if wait to lock the position of paying, possibly can't lock so and pay or can not accomplish lock reliably and pay.

Novel content

To the problems referred to above, the utility model provides a can be drawn onto the automatic screw machine dop on the screwdriver bit with screw, it is characterized in that on the dop seat, connecting a screw clamp nozzle mechanism; The inboard of this screw clamp nozzle mechanism is a rotary sleeve, and rotary sleeve is stairstepping, and there are three holes radially the upper end; Embed three blocks in the hole respectively, the lower end is with back-moving spring, and the outside of rotary sleeve is with fairlead; Three helicla flutes that the fairlead sidewall is left, three blocks can roll in helicla flute respectively, and above-mentioned member is contained in the outer sleeve; The endoporus of outer sleeve is stepped in order to constraint and release block, and outer sleeve is connected with the dop seat.When lock is paid; Screw gets into dop, and screw head is blocked by three blocks and locatees, and electric screwdriver is descending; Screwdriver bit withstands screw drive rotary sleeve, and descending cross notch up to screw head is meshed with screwdriver bit while rotating; When block arrives the major diameter place of outer sleeve, block is retreated releasing screw terminal stopped that screw stretches out with screwdriver bit under the effect of engagement force and magnetic attraction.This dop structure can adapt to any lock and pay environment, is widely used.

Description of drawings

Fig. 1: the front section view of the utility model (screw positioning states);

Fig. 2: the front section view of the utility model (screw taking-up state);

Fig. 3: the three-dimensional exploded view of the utility model.

Fig. 4: the screw clamp nozzle mechanism enlarged drawing of the utility model;

Fig. 5: the utility model practical implementation figure;

Wherein: 1 dop seat, 2 rotary sleeves, 3 blocks, 4 fairleads, 5 outer sleeves, 6 springs, 7 screws, 8 magnet rings, 9, screwdriver bit maintainance set, 10 screw conduits, 11 grades of pins, 12 screwdriver bits.

The specific embodiment

Aly can screw be drawn onto the automatic screw machine dop on the screwdriver bit, see Fig. 3, Fig. 4, it is characterized in that on dop seat 1, connecting a screw clamp nozzle mechanism; The inboard of this screw clamp nozzle mechanism is a rotary sleeve 2, and rotary sleeve 2 is stairstepping, and the upper end is evenly equipped with three holes radially; Embed three blocks 3 in the hole respectively, the lower end is with back-moving spring 6, and the outside of rotary sleeve 2 is with fairlead 4; The fairlead sidewall is left three helicla flutes, and three blocks can roll in helicla flute respectively, and above-mentioned member is contained in the outer sleeve 5; The endoporus of outer sleeve is stepped in order to constraint and release block 3, and outer sleeve 5 is connected with dop seat 1.A shelves pin 11 is arranged on the dop seat 1, can stop fairlead 4 to rotate.Operating principle is following: see Fig. 1; Screw 7 is blown into screw conduit 10 through feeding system; Y shape hole through the dop seat falls in the rotary sleeve, because three blocks are retrained the diameter of formed inside dimension less than screw terminal by outer sleeve 5, screw 8 is blocked centering and location in rotary sleeve.Lock is paid beginning, the screwdriver bit 12 descending screw heads that withstand on, and it is descending together with block 3 that the compressing screw drives rotary sleeve 2; Because fairlead 4 sidewall spiral fluted effects, rotary sleeve 2 drives screw 7 and rotates together in descending, mesh together up to the cross notch of screw head and the tip of screwdriver bit 12; Screwdriver bit continues descending; See Fig. 2, block 3 drops to the shoulder hole major diameter place of outer sleeve 5 along the fairlead helicla flute, and block 3 is drawn back and removed stopping screw terminal; Screw 7 stretches out with screwdriver bit under the effect of the engagement force of screwdriver bit and magnetic attraction, aims at lock and pays a position and lock and pay.This moment, rotary sleeve was reset under the effect of spring 6.For the magnetic force that makes screwdriver bit is stronger, this example is fixed with magnet ring 8 in the upper end of dop seat 1.This dop structure can adapt to any lock and pay environment, is widely used.

Fig. 5 is the instance that this utility model is applied to hand-held automatic locking filature; Johning knot member 103 on electric screwdriver 101; Fixing cylinder 102 on structural member 103; Cylinder 102 external parts connect this dop 105 through dop connecting plate 104, through stretching of cylinder 102, drive the automatic transport that dop 105 is accomplished screws 106.Lock is the same with common electric screwdriver when paying operation to be aimed at any position and locks to pay and operate.

The utility model is simple in structure, and the lock that enough adapts to any desk-top automatic screw machine and hand-held screw locking machine is paid environment, is widely used, and is easy to promote.

The structural factor of the utility model is relevant with the specification of screw; The above is a preferred embodiment of the utility model; Under the situation that does not break away from the utility model inventive concept, any conspicuous distortion and the replacement carried out all belong within the utility model protection domain.

Claims

1. aly can screw be drawn onto the automatic screw machine dop on the screwdriver bit, it is characterized in that on the dop seat, connecting a screw clamp nozzle mechanism, the inboard of this screw clamp nozzle mechanism is a rotary sleeve; The upper end of rotary sleeve is evenly equipped with three holes radially, embeds three blocks in the hole respectively, and the lower end is with back-moving spring; The outside of rotary sleeve is with fairlead; Three helicla flutes that the fairlead sidewall is left, three blocks can move in helicla flute respectively, and above-mentioned member is contained in the outer sleeve; The endoporus of outer sleeve is stepped in order to constraint and release block, and outer sleeve is connected with the dop seat.

2. automatic screw machine dop according to claim 1 is characterized in that described rotary sleeve is stepped, and there are three holes radially the upper end, is embedded with block in the hole respectively, and the size and the block in hole are measure-alike.

3. automatic screw machine dop according to claim 1 is characterized in that the lower end of described rotary sleeve is with back-moving spring.

4. automatic screw machine dop according to claim 1 is characterized in that the sidewall of described fairlead has three helicla flutes, and spiral fluted size and block are measure-alike, all can about the spiral fluted rotation direction.

5. automatic screw machine dop according to claim 1 is characterized in that the endoporus of described outer sleeve is stair-stepping, and in order to constraint and release block, its diameter dimension and block size adapt.

6. automatic screw machine dop according to claim 1 is characterized in that described block is spheroidal or columniform.