CN216829569U - Feeding device for screwing multiple screws on workpiece - Google Patents

Abstract

The utility model discloses a screw up loading attachment of many screws on work piece, it includes backing plate (4), turn right from a left side on backing plate (4) and set firmly support (5), feed cylinder (6) and the screw-nut pair of vertical setting in order, the top of support (5) has set firmly annular frame (7), and half conical duct (10) have all been welded on the top surface of half conical duct (9), and it is equipped with spring (11) all to overlap on two square poles (8), and the one end of spring (11) welds in half conical duct (9), and the other end welds on the inside wall of annular frame (7), under the spring action of spring (11), two half conical duct (9) are closed, and two half conical duct (10) are closed, have set firmly inlet pipe (12) rather than the intercommunication on the lateral wall of left half conical duct (10). The utility model has the advantages that: compact structure, improvement countersunk screw material loading efficiency, alleviate workman working strength, degree of automation is high, easy operation.

Description

Feeding device for screwing multiple screws on workpiece

Technical Field

The utility model relates to a technical field of screw material loading, especially a material loading device who twists many screws on the work piece.

Background

The structure of a certain work piece is as shown in figures 1-2, and it includes cylinder 1, and on the top surface of cylinder 1 and seted up a plurality of counter sink 2 along its marginal direction, counter sink 2 all seted up screw hole 3 around the axis evenly distributed of cylinder 1, the bottom of every counter sink 2. Technologically, a countersunk head screw is screwed in each threaded hole 3 in the column body 1 to complete assembly of workpieces, and assembled products are conveniently conveyed to a customer after assembly.

At present, the method mainly comprises the following steps of: firstly, a plurality of screws are respectively screwed in each threaded hole 3 of the cylinder 1, the operation mode is that the tool of the cylinder 1 is fixed on a workbench, then a worker initially screws up countersunk head screws in each threaded hole 3, finally, the worker operates a screw machine to enable a hexagonal rod on the screw machine to stretch into an inner hexagonal hole at the top of the countersunk head screw, the screw machine is started, the screw machine drives the hexagonal rod to rotate and enables the hexagonal rod to move downwards, the hexagonal rod screws the countersunk head screws into the threaded holes 3, and through the operation, the countersunk head screws can be screwed in each threaded hole 3, so that the assembly of workpieces is realized. However, although this method of screwing can achieve assembly, the following technical drawbacks still exist: I. the worker is required to screw a countersunk head screw in each threaded hole 3 in advance, then the screw machine is manually operated to enable the countersunk head screw to be screwed into the threaded hole 3, and the number of the countersunk head screws to be screwed is large, so that the working strength of the worker is increased undoubtedly, and meanwhile, the feeding efficiency of the countersunk head screws is reduced. II. The special pressing clamp is needed to be manually adopted to fix the column 1 tooling of the workpiece on the workbench, so that the feeding time is undoubtedly increased, and the feeding efficiency of the countersunk head screw is further reduced. Therefore, a feeding device which can improve the feeding efficiency of the countersunk head screws and reduce the working strength of workers is needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's shortcoming, provide a compact structure, improve countersunk screw material loading efficiency, alleviate workman working strength, degree of automation is high, easy operation's the loading attachment who twists many screws on the work piece.

The purpose of the utility model is realized through the following technical scheme: a feeding device for screwing a plurality of screws on a workpiece comprises a base plate, wherein a support, a feeding cylinder and a vertically arranged screw-nut pair are fixedly arranged on the base plate and sequentially arranged from left to right, an annular frame is fixedly arranged at the top of the support, square rods penetrate through the left side wall and the right side wall of the annular frame in a sliding manner, semicircular pipes are welded at the inner side ends of the two square rods, semi-conical pipes are welded at the top surfaces of the semicircular pipes, springs are sleeved on the two square rods, one ends of the springs are welded on the semicircular pipes, the other ends of the springs are welded on the inner side wall of the annular frame, the two semicircular pipes are closed under the elastic force action of the springs, the two semi-conical pipes are closed, feeding pipes communicated with the semicircular pipes are fixedly arranged on the outer side wall of the left semi-conical pipe, and the feeding pipes are tangent to conical surfaces of the semi-conical pipes;

a sliding table is fixedly arranged on the action end of a piston rod of the feeding cylinder, a vertically arranged stepping motor is fixedly arranged on the top surface of the sliding table, a rotary table is fixedly arranged on an output shaft of the stepping motor, and a sinking groove is formed in the top surface of the rotary table; the nut of the screw-nut pair is fixedly provided with a mounting plate, the top surface of the mounting plate is fixedly provided with a driving motor, an output shaft of the driving motor penetrates through the mounting plate, a hexagonal rod is fixedly arranged on the extending end, and the hexagonal rod is arranged right above an area surrounded by the two semicircular pipes.

The aperture enclosed by the two semi-conical pipes is smaller than the nominal diameter of the thread section of the countersunk head screw, and a conical cavity enclosed by the two semi-conical pipes is matched with the conical surface of the conical head of the countersunk head screw.

The outer contour of the sinking groove is matched with the outer contour of the workpiece, and the depth of the sinking groove is smaller than the thickness of the workpiece.

The hexagonal rod is coaxially arranged with an output shaft of the driving motor.

The screw-nut pair comprises a rack, a servo motor, a screw rod, a nut and a polished rod, wherein the rack is fixedly arranged on a base plate, the screw rod is vertically arranged, the two ends of the screw rod are rotatably arranged on the rack, the nut is in threaded connection with the screw rod, the servo motor is fixedly arranged at the top of the rack, an output shaft of the servo motor is connected with the top end of the screw rod, the polished rod penetrates through the nut, and the two ends of the polished rod are fixedly arranged on the rack.

The mounting plate is welded on the front end face of the nut.

The feeding device further comprises a controller, and the controller is electrically connected with the driving motor, the stepping motor, the servo motor and the electromagnetic valve of the feeding cylinder.

The utility model has the advantages of it is following: compact structure, improvement countersunk screw material loading efficiency, alleviate workman working strength, degree of automation is high, easy operation.

Drawings

FIG. 1 is a schematic view of a workpiece structure;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a schematic structural view of the present invention;

FIG. 4 is a cross-sectional view A-A of FIG. 3;

FIG. 5 is a schematic view of a countersunk screw positioning and workpiece positioning;

FIG. 6 is a cross-sectional view B-B of FIG. 5;

FIG. 7 is a schematic view of a workpiece positioned directly below a countersunk head screw;

FIG. 8 is a schematic view of a hexagonal rod threaded into a socket head hole of a countersunk head screw;

FIG. 9 is a schematic view of a countersunk head screw initially screwed into a threaded bore of a workpiece;

FIG. 10 is a schematic view of a countersunk head screw fully threaded into a threaded bore;

in the figure, 1-cylinder, 2-countersunk hole, 3-threaded hole, 4-backing plate, 5-bracket, 6-feeding cylinder, 7-annular frame, 8-square rod, 9-semicircular tube, 10-semi-conical tube, 11-spring, 12-feeding tube, 13-sliding table, 14-stepping motor, 15-rotary table, 16-countersunk groove, 17-mounting plate, 18-driving motor, 19-hexagonal rod, 20-frame, 21-servo motor, 22-screw rod, 23-nut, 24-countersunk head screw, 25-hexagon socket hole and 26-workpiece.

Detailed Description

The invention will be further described with reference to the accompanying drawings, without limiting the scope of the invention to the following:

as shown in fig. 3 to 4, a feeding device for screwing a plurality of screws on a workpiece comprises a backing plate 4, a bracket 5, a feeding cylinder 6 and a vertically arranged screw nut pair are fixedly arranged on the backing plate 4 from left to right in sequence, an annular frame 7 is fixedly arranged at the top of the bracket 5, square rods 8 are slidably penetrated through the left side wall and the right side wall of the annular frame 7, semicircular pipes 9 are welded at the inner side ends of the two square rods 8, semi-conical pipes 10 are welded on the top surfaces of the semicircular pipes 9, springs 11 are sleeved on the two square rods 8, one ends of the springs 11 are welded on the semicircular pipes 9, the other ends of the springs 11 are welded on the inner side wall of the annular frame 7, under the action of the elastic force of the spring 11, the two semi-conical pipes 9 are closed, the two semi-conical pipes 10 are closed, the outer side wall of the left semi-conical pipe 10 is fixedly provided with a feed pipe 12 communicated with the left semi-conical pipe, and the feed pipe 12 is tangent to the conical surface of the semi-conical pipe 10; the aperture enclosed by the two semi-circular pipes 9 is smaller than the nominal diameter of the thread section of the countersunk head screw, and the conical cavity enclosed by the two semi-conical pipes 10 is matched with the conical surface of the conical head of the countersunk head screw.

A sliding table 13 is fixedly arranged on the action end of a piston rod of the feeding cylinder 6, a vertically arranged stepping motor 14 is fixedly arranged on the top surface of the sliding table 13, a rotary table 15 is fixedly arranged on an output shaft of the stepping motor 14, a sinking groove 16 is formed in the top surface of the rotary table 15, the outer contour of the sinking groove 16 is matched with the outer contour of a workpiece, and the depth of the sinking groove 16 is smaller than the thickness of the workpiece; the nut 23 of the screw-nut pair is fixedly provided with an installation plate 17, the top surface of the installation plate 17 is fixedly provided with a driving motor 18, an output shaft of the driving motor 18 penetrates through the installation plate 17, the extending end of the driving motor is fixedly provided with a hexagonal rod 19, the hexagonal rod 19 and the output shaft of the driving motor 18 are coaxially arranged, and the hexagonal rod 19 is arranged right above an area surrounded by the two semicircular pipes 9.

Screw-nut is vice to include frame 20, servo motor 21, lead screw 22, nut 23 and polished rod, frame 20 sets firmly on backing plate 4, and lead screw 22 is vertical to be set up, and the equal swivelling joint in frame 20 in both ends of lead screw 22, and nut 23 threaded connection is on lead screw 22, and servo motor 21 sets firmly in the top of frame 20, and servo motor 21's output shaft is connected with lead screw 22's top, the polished rod runs through the nut 23 setting, and the both ends of polished rod all set firmly on frame 20, mounting panel 17 welds on the preceding terminal surface of nut 23.

The feeding device further comprises a controller, the controller is electrically connected with the electromagnetic valves of the driving motor 18, the stepping motor 14, the servo motor 21 and the feeding cylinder 6, a worker can control the driving motor 18, the stepping motor 14 and the servo motor 21 to be started or closed through the controller, and meanwhile, the extension or retraction of a piston rod of the feeding cylinder 6 can be controlled, so that the feeding device is convenient for the operation of the worker and has the characteristic of high automation degree.

The working process of the utility model is as follows:

s1, countersunk head screw positioning and workpiece positioning, wherein the specific operation steps are as follows:

s11, placing the workpiece into the sinking groove 16 of the rotary table 15 from top to bottom by a worker, wherein the workpiece 26 is matched with the sinking groove 16, and each threaded hole 3 on the workpiece is arranged upwards, so that the workpiece 26 is positioned as shown in FIGS. 5-6; therefore, the workpiece is not required to be fixed on the workbench manually by adopting a clamp, so that the fixing time of the tool is greatly saved, and the feeding efficiency of the countersunk head screw is greatly improved;

s12, a worker puts in the countersunk head screw 24 into the area enclosed by the two semi-conical pipes 10 through the feeding pipe 12, the countersunk head screw 24 slides downwards into the area enclosed by the two semi-conical pipes 9 along the conical surface of the semi-conical pipe 10 on the left side, at the moment, the conical cavity enclosed by the two semi-conical pipes 10 is matched with the conical surface of the conical head of the countersunk head screw 24, and meanwhile, the thread section of the countersunk head screw 24 is suspended in the area enclosed by the two semi-conical pipes 9, so that the positioning of the countersunk head screw 24 is realized as shown in FIGS. 5-6;

s2, controlling the piston rod of the feeding cylinder 6 to extend backwards by a worker, driving the sliding table 13 to move backwards by the piston rod, driving the stepping motor 14 and the rotary table 15 to move backwards synchronously by the sliding table 13, further enabling the workpiece 26 to move backwards synchronously, and when the piston rod of the feeding cylinder 6 extends completely, enabling the first threaded hole 3 in the workpiece 26 to be just under the countersunk head screw 24 as shown in FIG. 7;

s3, a worker controls the driving motor 18 to start, the driving motor 18 drives the hexagonal rod 19 to rotate around the axis of the hexagonal rod 19, the worker controls the servo motor 21 to start, the servo motor 21 drives the screw rod 22 to rotate, the nut 23 moves downwards along the screw rod 22, the nut 23 drives the mounting plate 17 to move downwards, the mounting plate 17 drives the driving motor 18 and the hexagonal rod 19 to move downwards synchronously, after the hexagonal rod 19 moves downwards to a certain distance, the hexagonal rod 19 is just screwed into the inner hexagonal hole 25 of the countersunk head screw 24 and is just matched with the inner hexagonal hole 25 as shown in figure 8, and the countersunk head screw 24 is driven to rotate synchronously after being matched with the hexagonal rod 19; with the continuous downward movement of the hexagonal rod 19, the conical head of the countersunk head screw 24 props the two half conical pipes 10 outwards, the semi-circular pipe 9 pushes the square rod 8 towards the outer side of the annular frame 7 and compresses the spring 11, meanwhile, the thread section of the countersunk head screw 24 is preliminarily screwed into the first threaded hole 3 as shown in fig. 9, and with the continuous downward screwing of the hexagonal rod 19, the thread section of the countersunk head screw 24 is exactly screwed into the threaded hole 3 as shown in fig. 10, so that the feeding of the first countersunk head screw 24 is realized;

s4, after a first countersunk head screw is fed, under the elastic restoring force of two springs 11, two semi-circular tubes 9 are closed again, two semi-conical tubes 10 are closed again at the same time, then a worker controls a servo motor 21 to rotate reversely, so that a screw rod 22 is driven to rotate reversely, a nut 23 moves upwards along the screw rod 22, and after the nut 23 moves to an upper limit position, a controller controls the servo motor 21 to be closed;

s5, a worker controls the stepping motor 14 to start, the stepping motor 14 drives the rotary table 15 to rotate for one station, further drives the workpiece 26 to rotate for one station, at the moment, the second threaded hole 3 in the workpiece 26 enters a feeding station, the operation of the steps S12 and S3 is repeated, the second countersunk screw can be put on the workpiece, the operation is repeated, the countersunk screw can be screwed in each threaded hole 3 in the workpiece 26, and therefore the assembly of the workpiece is finally achieved; therefore, compared with the traditional feeding method, the feeding device has the advantages that a sunk screw does not need to be screwed in each threaded hole 3 in advance, then the screw machine is manually operated to enable the sunk screw to be screwed into the threaded hole, the sunk screw 24 is directly thrown in the feeding pipe 12, the positive and negative rotation of the servo motor 21 is controlled, and the sunk screws can be screwed into a workpiece rapidly and continuously, so that the working strength of workers is greatly reduced, and the feeding efficiency of the sunk screws is greatly improved;

s6, the piston rod of the worker feeding cylinder 6 retracts backwards, the piston rod drives the sliding table 13 to reset, the sliding table 13 drives the rotary table 15 to reset, the workers take the assembled products out of the sinking groove 16, and the operation of the steps S1-S5 is repeated, so that a plurality of products can be continuously produced.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. The utility model provides a screw up loading attachment of many screws on work piece which characterized in that: it includes backing plate (4), it is vice that backing plate (4) go up and turn right from a left side and set firmly support (5), feed cylinder (6) and vertical screw-nut who sets up in order, the top of support (5) has set firmly annular frame (7), it has square pole (8) to all slide to run through on the lateral wall about annular frame (7), the medial extremity of two square poles (8) all welds semicircle pipe (9), all weld half cone pipe (10) on the top surface of semicircle pipe (9), all overlap on two square poles (8) and be equipped with spring (11), the one end of spring (11) welds in semicircle pipe (9), the other end welds on the inside wall of annular frame (7), under the elastic force effect of spring (11), two semicircle pipe (9) are closed, and two half cone pipe (10) are closed, inlet pipe (12) rather than the intercommunication set firmly on the lateral wall of left half cone pipe (10), the feeding pipe (12) is tangent to the conical surface of the semi-conical pipe (10);

a sliding table (13) is fixedly arranged on the action end of a piston rod of the feeding cylinder (6), a vertically arranged stepping motor (14) is fixedly arranged on the top surface of the sliding table (13), a rotary table (15) is fixedly arranged on an output shaft of the stepping motor (14), and a sunk groove (16) is formed in the top surface of the rotary table (15); the screw rod nut pair is characterized in that a mounting plate (17) is fixedly arranged on a nut (23), a driving motor (18) is fixedly arranged on the top surface of the mounting plate (17), an output shaft of the driving motor (18) penetrates through the mounting plate (17) to be arranged, a hexagonal rod (19) is fixedly arranged on an extending end, and the hexagonal rod (19) is arranged right above an area surrounded by two semicircular pipes (9).

2. A loading device for screwing a plurality of screws on a workpiece according to claim 1, wherein: the aperture enclosed by the two semi-circular pipes (9) is smaller than the nominal diameter of the thread section of the countersunk head screw, and the conical cavity enclosed by the two semi-conical pipes (10) is matched with the conical surface of the conical head of the countersunk head screw.

3. A loading device for screwing a plurality of screws on a workpiece according to claim 1, wherein: the outer contour of the sinking groove (16) is matched with the outer contour of the workpiece, and the depth of the sinking groove (16) is smaller than the thickness of the workpiece.

4. A loading device for screwing a plurality of screws on a workpiece according to claim 1, wherein: the hexagonal rod (19) is coaxially arranged with an output shaft of the driving motor (18).

5. A loading device for screwing a plurality of screws on a workpiece according to claim 1, wherein: the screw-nut pair comprises a rack (20), a servo motor (21), a screw rod (22), a nut (23) and a polished rod, wherein the rack (20) is fixedly arranged on a base plate (4), the screw rod (22) is vertically arranged, the two ends of the screw rod (22) are rotatably arranged on the rack (20), the nut (23) is in threaded connection with the screw rod (22), the servo motor (21) is fixedly arranged at the top of the rack (20), an output shaft of the servo motor (21) is connected with the top end of the screw rod (22), the polished rod penetrates through the nut (23) and is arranged, and the two ends of the polished rod are fixedly arranged on the rack (20).

6. A loading device for screwing a plurality of screws on a workpiece according to claim 1, wherein: the mounting plate (17) is welded to the front end face of the nut (23).

7. A loading device for screwing a plurality of screws on a workpiece according to claim 1, wherein: the feeding device further comprises a controller, and the controller is electrically connected with the driving motor (18), the stepping motor (14), the servo motor (21) and the electromagnetic valve of the feeding cylinder (6).

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