CN104608139B - A high-precision vacuum suction nozzle device - Google Patents

Abstract

The invention relates to the technical field of assembly equipment, in particular to a high-precision vacuum suction nozzle device, which comprises a fixed support, wherein the fixed support is connected with a suction nozzle assembly capable of sliding up and down; an elastic element is arranged between the suction nozzle pipe and the transmission shaft pipe, a first through hole used for being communicated with the outside is formed in the side wall of the connecting shaft sleeve, and a second through hole used for being communicated with the first through hole and destroying the vacuum environment in the vacuum suction nozzle is formed in the pipe wall of the suction nozzle pipe; the transmission shaft tube or the suction nozzle tube is provided with a vacuumizing interface and a vacuum detection interface; according to the invention, through the detection of the vacuum degree in the vacuum suction nozzle, the feeding stroke of the material can be effectively controlled, the high-precision stroke control is realized, and the damage to the material and the vacuum suction nozzle is avoided.

Description

A high-precision vacuum suction nozzle device

technical field

The invention relates to the technical field of assembly equipment, in particular to a high-precision vacuum suction nozzle device.

Background technique

The vacuum nozzle is a very common accessory in industrial production machinery. It is shaped as a flat conical rubber nozzle. The bottom of the nozzle is a sealing tube connected to the vacuum pump. When working, the air in the nozzle is pumped out through the sealing tube. The suction nozzle is firmly adsorbed on the surface of the object, so as to carry and transfer the object.

Chinese Patent No. ZL201210322495.0 discloses a grain suction nozzle with cushioning effect, which includes a fixed part, a tubular elastic body and a working part, and the fixed part, tubular elastic body and working part are equipped with gas supply Flow channel; the tubular elastic body is set in the fixed part, and the working part is directly or indirectly connected to the tubular elastic body. When the fixed part is set on the vacuum pumping device and operated, negative gas pressure (negative pressure) can be generated in the channel , so that a suction force is generated at the end of the working part, and the tubular elastic body provides an elastic buffer between the working part and the fixed part, so as to avoid damage to the crystal grain due to the force when the working part contacts the crystal grain.

Although the vacuum nozzles in the prior art are equipped with tubular elastic bodies, they cannot effectively control the motion stroke of the nozzles, especially when the nozzles are discharging materials, collisions are likely to occur, resulting in damage to the workpiece and the nozzles .

Contents of the invention

The purpose of the present invention is to provide a high-precision vacuum suction nozzle device for the deficiencies of the prior art, and realize high-precision stroke control through the vacuum degree detection inside the vacuum suction nozzle.

In order to achieve the above object, a high-precision vacuum nozzle device of the present invention includes a fixed bracket, the fixed bracket is connected with a suction nozzle assembly that can slide up and down, and the suction nozzle assembly includes a hollow transmission shaft tube inside. The bottom of the transmission shaft tube is connected with a connecting bushing, and the interior of the connecting bushing is provided with a suction nozzle tube that can slide up and down. The suction nozzle tube is connected with a vacuum nozzle, and the vacuum nozzle, the suction nozzle tube and the transmission The shaft tubes communicate with each other; an elastic element is arranged between the suction nozzle tube and the transmission shaft tube, the side wall of the connecting sleeve is provided with a first through hole for communicating with the outside world, and the tube wall of the suction nozzle tube is provided with There is a second through hole for communicating with the first through hole and destroying the vacuum environment inside the vacuum nozzle; it also includes a vacuum interface and a vacuum detection interface, and the vacuum interface and vacuum detection interface are arranged on the transmission shaft tube or the suction nozzle tube .

Preferably, the fixed bracket is provided with a rotary motor for driving the transmission shaft tube to rotate, the transmission shaft tube passes through the rotary motor, the transmission shaft of the rotary motor is connected with a ferrule, and the tube of the transmission shaft tube The wall is provided with a spline groove, and the inner wall of the ferrule is snapped into the spline groove;

The nozzle pipe is provided with a spline groove, and the inner wall of the connecting sleeve is engaged with the spline groove.

Preferably, the fixed bracket is provided with a driving motor, the driving motor is connected with a screw rod, the screw rod is connected with a nut sleeve, and the nut sleeve is provided with a pneumatic valve, and the pneumatic valve is connected to the fixed bracket through a slide rail assembly ; The upper end of the transmission shaft tube is connected with a clamping sleeve, and the valve core of the pneumatic valve can be clamped on the clamping sleeve after extending out.

Preferably, the suction nozzle tube is provided with a chute, and the connecting bush is provided with a stop pin extending to the inside of the chute.

Preferably, the elastic element is a buffer spring.

Preferably, the vacuum suction nozzle includes an inlaid end portion, a connecting pipe portion and a nozzle head connected in sequence, and the vacuum suction nozzle is inlaid on the bottom of the nozzle pipe through the inlaid end portion.

Preferably, the nozzle head is conical, stepped or cylindrical.

Beneficial effects of the present invention: a high-precision vacuum suction nozzle device includes a fixed bracket connected with a suction nozzle assembly that can slide up and down. The shaft sleeve, the inside of the connecting shaft sleeve is provided with a suction nozzle tube that can slide up and down, the suction nozzle tube is connected with a vacuum nozzle, and the vacuum nozzle, suction nozzle tube and transmission shaft tube are connected to each other; the suction nozzle tube and the transmission shaft tube An elastic element is provided, the side wall of the connecting shaft sleeve is provided with a first through hole for communicating with the outside world, and the tube wall of the suction nozzle tube is provided with a second through hole for communicating with the first through hole and destroying the vacuum environment inside the vacuum nozzle. hole; the transmission shaft tube or nozzle tube is provided with a vacuum interface and a vacuum detection interface; in the initial state, the first through hole and the second through hole are misaligned with each other, and the external vacuum equipment generates a vacuum through the vacuum interface. Negative pressure can absorb materials. When the vacuum nozzle needs to discharge, the manipulator controls the transmission shaft tube to drive the connecting sleeve and the vacuum nozzle to slide down. When the material is placed on the workpiece, due to the suction nozzle tube and the transmission shaft tube There is an elastic element between them, and the vacuum nozzle pushes the nozzle tube upward to compress the elastic element. When the second through hole on the nozzle tube moves to the position of the first through hole, the negative pressure environment inside the vacuum nozzle is broken. , after the external vacuum detection device detects that the negative pressure environment is broken from the vacuum detection interface, it controls the manipulator to move up, and ends the feeding of the discharge stroke. Feed stroke, to achieve high-precision stroke control, to avoid damage to materials and vacuum nozzles.

Description of drawings

Fig. 1 is a schematic diagram of the three-dimensional structure of the present invention.

Fig. 2 is a schematic side view of the structure of the present invention.

Fig. 3 is a front structural schematic view of the suction nozzle assembly of the present invention.

Fig. 4 is a sectional view along line A-A in Fig. 3 .

FIG. 5 is a partially enlarged schematic diagram of point C in FIG. 4 .

Fig. 6 is a schematic perspective view of the three-dimensional structure of the suction nozzle assembly of the present invention.

Fig. 7 is a schematic perspective view of the three-dimensional structure of the suction nozzle tube of the present invention.

Fig. 8 is a schematic diagram of the three-dimensional structure of the vacuum suction nozzle of the present invention after connecting materials.

Fig. 9 is a cross-sectional view of the connection between the first vacuum nozzle and the material of the present invention.

Fig. 10 is a cross-sectional view of the connection between the second vacuum nozzle and the material of the present invention.

Fig. 11 is a cross-sectional view of the connection between the third vacuum nozzle and the material of the present invention.

Reference signs include:

1—fixed bracket 2—nozzle assembly 21—drive shaft tube

22—connecting bushing 221—first through hole 23—nozzle tube

231—second through hole 232—chute 233—limiting nail

24—vacuum nozzle 241—inlaid end 242—connecting pipe

243—nozzle head 25—elastic element 26—vacuum interface

27—vacuum detection interface 31—rotating motor 32—card sleeve

33—spline groove 41—drive motor 42—screw rod

43—pneumatic valve 44—locking shaft sleeve 5—material.

detailed description

The present invention will be described in detail below in conjunction with the accompanying drawings.

As shown in Figures 1 to 11, a high-precision vacuum nozzle device of the present invention includes a fixed bracket 1 connected to a suction nozzle assembly 2 that can slide up and down, and the suction nozzle assembly 2 includes an internal A hollow transmission shaft tube 21, the bottom of the transmission shaft tube 21 is connected with a connecting sleeve 22, and the inside of the connecting sleeve 22 is provided with a suction nozzle tube 23 that can slide up and down, and the suction nozzle tube 23 is connected with a vacuum The suction nozzle 24, the vacuum suction nozzle 24, the suction nozzle tube 23 and the transmission shaft tube 21 communicate with each other; an elastic element 25 is arranged between the suction nozzle tube 23 and the transmission shaft tube 21, and the side of the connecting shaft sleeve 22 The wall is provided with a first through hole 221 for communicating with the outside world, and the tube wall of the suction nozzle tube 23 is provided with a second through hole 231 for communicating with the first through hole 221 and destroying the vacuum environment inside the vacuum suction nozzle 24; It includes a vacuum interface 26 and a vacuum detection interface 27 , and the vacuum interface 26 and the vacuum detection interface 27 are arranged on the transmission shaft tube 21 or the suction nozzle tube 23 .

In the initial state, the first through hole 221 and the second through hole 231 are misaligned, the transmission shaft tube 21, the connecting bush 22, the suction nozzle tube 23, the vacuum suction nozzle 24 and the material 5 can form a vacuum negative pressure environment, and the external The vacuuming device makes the vacuum suction nozzle 24 generate negative pressure through the vacuuming interface 26 so that the material 5 can be sucked. When the vacuum suction nozzle 24 needs to be discharged, the external manipulator controls the transmission shaft tube 21 to drive the connecting sleeve 22 and the vacuum suction nozzle 24 to slide downward. When the material 5 is placed on the workpiece, due to the suction nozzle tube 23 and the transmission shaft tube 21 is provided with an elastic element 25, and the vacuum nozzle 24 pushes the suction nozzle tube 23 to compress the elastic element 25 upwards. When the second through hole 231 on the suction nozzle tube 23 moves to the position of the first through hole 221, the vacuum nozzle The negative pressure environment inside 24 is broken, and after the external vacuum detection equipment detects that the negative pressure environment is broken from the vacuum detection interface 27, the manipulator is controlled to move up, and the feeding of the discharge stroke is ended. The advanced vacuum degree detection can effectively control the feeding stroke of the material 5, realize high-precision stroke control, and avoid damage to the material 5 and the vacuum nozzle 24.

The fixed bracket 1 of this embodiment is provided with a rotating motor 31 for driving the rotation of the transmission shaft tube 21, the transmission shaft tube 21 passes through the rotation motor 31, and the transmission shaft of the rotation motor 31 is connected with a ferrule 32, so The tube wall of the transmission shaft tube 21 is provided with a spline groove 33, and the inner wall of the ferrule 32 is engaged with the spline groove 33; the nozzle tube 23 is provided with a spline groove 33, and the inner wall of the connecting sleeve 22 Fastened to the spline groove 33. The rotary motor 31 can drive the ferrule 32 to rotate. Since the pipe wall of the transmission shaft tube 21 is provided with a spline groove 33, the ferrule 32 can drive the transmission shaft tube 21 to rotate, and the connecting sleeve 22 is connected with the transmission shaft tube 21 to absorb The nozzle pipe 23 is also provided with a spline groove 33 , so the connecting sleeve 22 drives the nozzle pipe 23 to rotate, and finally realizes the rotation of the vacuum nozzle 24 . Due to the setting of the spline groove 33, the transmission shaft tube 21 and the suction nozzle tube 23 can not only rotate but also move up and down in the vertical direction. When the material 5 is assembled, it is sometimes necessary to dispense glue first and then discharge the material. When the glue dispensing equipment applies the glue on the workpiece, the vacuum nozzle 24 places the discharge material on the glue, and the rotating motor 31 controls the vacuum nozzle. 24 Rotate clockwise or counterclockwise at a certain angle, so that the glue between the material 5 and the workpiece can be evenly dispersed, so that the assembly of the material 5 is more firm.

The fixed bracket 1 of the present embodiment is provided with a driving motor 41, the driving motor 41 is connected with a screw rod 42, the screw rod 42 is connected with a nut sleeve, and the nut sleeve is provided with a pneumatic valve 43, and the pneumatic valve 43 is passed through a slide. The rail assembly is connected to the fixed bracket 1; the upper end of the transmission shaft tube 21 is connected with a clamping sleeve 44, and the valve core of the pneumatic valve 43 can be clamped on the clamping sleeve 44 after being extended. The manipulator of this embodiment is realized by driving motor 41, screw mandrel 42 and nut cover. On the automatic assembly equipment, multiple Z axes are often required to be set in the Z axis direction, for example: the glue dispensing Z axis assembly and the suction nozzle assembly 2 of this embodiment. The pneumatic valve 43 controls the expansion and contraction of different valve cores, and selectively controls different components to realize the feed in the Z-axis direction. Specifically, the valve core of this embodiment can be clamped to the clamping sleeve 44 after being extended, and the clamping sleeve 44 drives the transmission shaft tube 21 to feed up and down, thereby realizing driving the vacuum suction nozzle 24 to feed up and down. Using one motor and a set of screw rod 42 transmission mechanism can realize the feeding of different components, simplify the structure of the equipment and reduce the manufacturing cost of the equipment.

The suction nozzle tube 23 of this embodiment is provided with a sliding slot 232 , and the connecting sleeve 22 is provided with a limiting pin 233 extending to the inside of the sliding slot 232 . When the material 5 touches the workpiece, the suction nozzle tube 23 slides relative to the connecting shaft sleeve 22. Through the setting of the chute 232 and the limit nail 233, the movement stroke of the suction nozzle tube 23 can be limited, and the vacuum suction nozzle 24 can also be limited. exercise itinerary.

Specifically, the elastic element 25 in this embodiment is a buffer spring. The buffer spring is simple in structure and reliable in movement, and effectively buffers and resets between the suction nozzle tube 23 and the transmission shaft tube 21 .

The vacuum nozzle 24 in this embodiment includes a splicing end portion 241 , a connecting pipe portion 242 and a nozzle head 243 which are connected in sequence. Therefore, the vacuum nozzle 24 can be replaced according to different assembly environments.

Specifically, the nozzle head 243 of this embodiment is conical, stepped or cylindrical.

As shown in Figures 8 to 9, when the conical suction nozzle head 243 sucks the material 5, the suction nozzle head 243 can extend into the inside of the aperture of the material 5, and when the material 5 needs to be rotated during assembly, the suction nozzle head 243 with a certain taper can Better frictional contact with the inner diameter of the material 5, effectively driving the material 5 to rotate.

As shown in Figure 10, the step-shaped nozzle head 243 can control the coaxiality and flatness of the material 5 during assembly through the step shape. When the material 5 needs to have requirements on the coaxiality and flatness during assembly, you can choose The step-shaped suction nozzle carries out the installation of the material 5 .

As shown in Figure 11, the cylindrical nozzle head 243 has its cylindrical opposite surface directly attached to the surface of the material 5. When the material 5 needs to have flatness requirements during assembly, a cylindrical nozzle can be selected for the material 5. installation.

The above content is only a preferred embodiment of the present invention. For those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation and application scope. limits.

Claims (6)

1. a high accuracy vacuum slot device, comprise fixed support (1), described fixed support (1) is connected with the component suction nozzle that can slide up and down (2), it is characterized in that: described component suction nozzle (2) comprises the transmission shaft tube (21) of inner hollow, the below of described transmission shaft tube (21) is connected with connecting bushing (22), the inside of described connecting bushing (22) is provided with the suction nozzle pipe (23) that can slide up and down, described suction nozzle pipe (23) is connected with vacuum slot (24), described vacuum slot (24), suction nozzle pipe (23) and transmission shaft tube (21) are interconnected,

Flexible member (25) is provided with between described suction nozzle pipe (23) and transmission shaft tube (21), the sidewall of described connecting bushing (22) is provided with the first through hole (221) for being in communication with the outside, and the tube wall of described suction nozzle pipe (23) is provided with for being communicated with the first through hole (221) and destroying second through hole (231) of vacuum slot (24) inner vacuum environment;

Also comprise and vacuumize interface (26) and vacuum detecting interface (27), described in vacuumize interface (26) and vacuum detecting interface (27) is arranged at transmission shaft tube (21) or suction nozzle pipe (23);

Described fixed support (1) arranges drive motors (41), described drive motors (41) is connected with screw mandrel (42), described screw mandrel (42) is connected with nut sleeve, and described nut sleeve is provided with pneumatic operated valve (43), and described pneumatic operated valve (43) is connected to fixed support (1) by slide track component;

The upper end of described transmission shaft tube (21) is connected with screens axle sleeve (44), can be connected in screens axle sleeve (44) after the spool of described pneumatic operated valve (43) stretches out.

2. a kind of high accuracy vacuum slot device according to claim 1, it is characterized in that: described fixed support (1) is provided with the electric rotating machine (31) for driving transmission shaft tube (21) to rotate, described transmission shaft tube (21) is through described electric rotating machine (31), the power transmission shaft of described electric rotating machine (31) is connected with cutting ferrule (32), the tube wall of described transmission shaft tube (21) is provided with spline (33), and the inwall of described cutting ferrule (32) is connected in described spline (33);

Described suction nozzle pipe (23) is provided with spline (33), and the inwall of described connecting bushing (22) is connected in spline (33).

3. a kind of high accuracy vacuum slot device according to claim 1, is characterized in that: described suction nozzle pipe (23) is provided with chute (232), and described connecting bushing (22) is provided with and extends to the inner banking pin (233) of chute (232).

4. a kind of high accuracy vacuum slot device according to claim 1, is characterized in that: described flexible member (25) is buffer spring.

5. a kind of high accuracy vacuum slot device according to claim 1, it is characterized in that: described vacuum slot (24) comprises end of splicing (241) connected successively, connecting section (242) and nozzle head (243), and described vacuum slot (24) is spliced in the bottom of suction nozzle pipe (23) by end of splicing (241).

6. a kind of high accuracy vacuum slot device according to claim 5, is characterized in that: described nozzle head (243) conically, step or cylindrical.