CN109262246B

CN109262246B - one-driving-N circumferential type micro screw feeder based on face gear transmission and feeding method

Info

Publication number: CN109262246B
Application number: CN201811098026.9A
Authority: CN
Inventors: 盛冬平
Original assignee: Changzhou Institute of Technology
Current assignee: Changzhou Institute of Technology
Priority date: 2018-09-20
Filing date: 2018-09-20
Publication date: 2020-08-14
Anticipated expiration: 2038-09-20
Also published as: CN109262246A

Abstract

The invention discloses a one-driving-N circumferential type micro screw feeder based on face gear transmission and a feeding method. This feeder includes: a housing; the vacuum adsorption type material distribution modules are arranged in the circumferential space structure along the circumferential direction of the outer cover; the motor gear transmission mechanism comprises a servo motor, a face gear and a cylindrical straight gear, wherein the circumferential type micro screw feeder outputs power through the servo motor, and the power is distributed to each vacuum adsorption type material distribution module through the servo motor, the face gear and the cylindrical straight gear. The power transmission of a plurality of nail suction systems is realized through one servo motor, so that the transmission logarithm of the gears and the number of the motors are reduced; the multi-station one-stop type micro screw feeding is realized; the information or data of the screw at each discharge port can realize data exchange by a workstation or an assembly line body, so that the time for waiting the screw can be reduced to the maximum extent; the space size requirement is significantly reduced.

Description

one-driving-N circumferential type micro screw feeder based on face gear transmission and feeding method

Technical Field

The invention relates to a miniature screw feeder, in particular to a circular miniature screw feeder and a feeding method.

Background

The micro screw feeding system is commonly used in a manual/automatic product assembly workstation or a production line, and has the main functions of orderly arranging the stacked small parts according to a certain rule, conveying the parts to an appointed position one by one, and conveying the micro screws to a screw feeding system by a screw sucking system. At present, a relatively mature vacuum adsorption type miniature screw feeding system for small screws with the diameter of less than M1.2 exists, and the basic principle is as follows: stir the screw in the feed bin through the carousel, including the hole that has the vacuum adsorption power and match with the screw size on the carousel periphery, adsorb the screw and sit downthehole, then through rotatory carousel, rotate the screw to the assigned position, there is vacuum detection sensor at the assigned position, when reaching certain vacuum value, explains that there is the screw at the assigned position, if do not reach certain vacuum value, explains that there is not the screw at the assigned position. The vacuum adsorption type micro screw feeding system has the defects of unstable feeding efficiency, complex adjustment, high cost and the like.

The face gear is a new gear invented in recent years, and is mainly characterized by that it can be directly meshed with spur gear, and the face gear and transmission shaft of the spur gear are formed into 90 deg. included angle, and said transmission structure is specially applicable to the occasion requiring large transmission ratio, multi-shaft power shunt and limited space.

Disclosure of Invention

The purpose of the invention is to: (1) the multi-station one-stop type micro screw feeding is realized under the condition of ensuring the volume of the feeding system to be minimized; (2) the nail feeding stability is improved; (3) and the system cost is reduced.

In order to solve the problems, the invention adopts the following technical scheme:

the invention provides a one-driving-N circumferential micro screw feeder based on face gear transmission, which comprises a vacuum adsorption type material distribution module, wherein the vacuum adsorption type material distribution module comprises a power input shaft and a discharge hole, and the circumferential micro screw feeder comprises:

the outer cover comprises an installation base, an outer frame and a cover plate, the installation base, the outer frame and the cover plate jointly enclose a circumferential space structure, the cover plate covers a storage bin of the vacuum adsorption type material distribution module, and an opening for outputting screws is formed in the cover plate;

the vacuum adsorption type material distribution modules are arranged in the circumferential space structure along the circumferential direction of the outer cover, discharge ports of the vacuum adsorption type material distribution modules are arranged corresponding to openings in the cover plate, and the vacuum adsorption type material distribution modules are fixed on the mounting base;

the motor gear transmission mechanism comprises a servo motor, a face gear and a cylindrical straight gear, wherein the servo motor is fixedly arranged on an installation base between the vacuum adsorption type material distribution modules, the face gear is fixed on an output shaft of the servo motor, the cylindrical straight gear is connected with a power input shaft of the vacuum adsorption type material distribution modules, and gear teeth of the cylindrical straight gear are meshed with teeth on the face gear;

the circumferential type micro screw feeder outputs power through a servo motor, and distributes the power to each vacuum adsorption type material distribution module through the servo motor, a face gear and a cylindrical straight gear.

Furthermore, the number of the vacuum adsorption type material distribution modules is 6, and 6 cylindrical spur gears and face gears form a gear transmission system in circumferential distribution.

Furthermore, each vacuum adsorption type material distribution module is provided with an independent control device which is respectively arranged on the respective control panel.

Further, vacuum adsorption formula divides material module to include feed bin, inside rotary mechanism, automatically controlled universal clutch, transmission shaft, vacuum generator, controller, negative pressure sensor, vacuum adsorption formula divides material module to have power input shaft, power input shaft's one end links to each other with automatically controlled universal clutch one end, and the other end links to each other with the transmission shaft, the other end of transmission shaft links to each other with the cylinder spur gear, vacuum generator, controller, negative pressure sensor install on dividing the material module, and control panel is used for providing inside required power connection, external data exchange and running state pilot lamp.

Furthermore, the electric control universal clutch can transmit along different angles and can realize the on-off of the power transmission in an electric control mode.

Further, the drive shaft is mounted on a support consisting of a bearing and a bearing support.

Furthermore, the vacuum adsorption type material distribution module is fixed on the mounting base through a supporting seat.

The invention also provides a feeding method of the one-drag-N circumferential type micro screw feeder based on face gear transmission, which comprises the following steps:

starting a servo motor, driving a face gear to drive a cylindrical straight gear to rotate so as to drive a vacuum adsorption type material distribution module to start working, when a screw is detected to be in place in an ith vacuum adsorption type material distribution module, receiving a signal by an ith controller, sending out two paths of signals, sending out the first path of signal to an electric control universal clutch, controlling the electric control universal clutch to cut off power, stopping a transmission system in the ith vacuum adsorption type material distribution module from rotating, sending out the second path of signal to a master controller of a workstation/production line, and informing the master controller of the ith material distribution module that materials are ready and are in a state to be taken;

when the material to be taken in the ith vacuum adsorption type material distribution module is taken away, the controller of the ith vacuum adsorption type material distribution module sends a signal to the internal electric control universal clutch after receiving the signal, informs the internal electric control universal clutch to start to engage power, starts to rotate and carries out the next material taking action;

and when the parts to be taken are to be taken by the multi-path material distribution modules, the materials are taken according to the queuing sequence of the parts to be taken.

The invention has the following beneficial effects:

(1) because the power transmission scheme based on the motor, the cylindrical straight gear and the face gear is utilized, the power of the system can realize the power transmission of a plurality of nail suction systems through one servo motor with the speed reduction function, so that the transmission logarithm of the gears and the number of the motors are reduced, and the cost of the system is obviously reduced;

(2) the multi-station one-stop type micro screw feeding system is realized, and micro screws can be provided for a plurality of workstations or annular assembly lines at the same time;

(3) due to the fact that circumferential N-pulling type nail feeding is achieved, information or data of screws at each discharge port can be exchanged with data in a workstation or an assembly line body, time for waiting the screws can be reduced to the maximum extent, and stability and high efficiency of nail feeding are achieved;

(4) because the face gear is adopted to drive the plurality of straight cylindrical gears, the space required by gear transmission and the space size requirement on an automatic production line are obviously reduced.

Drawings

FIG. 1 is an external view of a N-one-drive circumferential micro screw feeder based on face gear driving according to the present invention;

FIG. 2 is an internal structure view of a one-drive-N circumferential micro screw feeder based on face gear driving according to the present invention;

FIG. 3 is a top view (without a housing) of the N-one micro screw feeder based on face gear driving of the present invention;

FIG. 4 is an enlarged view of the structure of portion A of FIG. 3;

FIG. 5 is an exploded view of the internal structure of the present invention;

fig. 6 is an exploded view of the structure of a single vacuum suction type material separating module.

In the figure: 101. a housing; 102. installing a base; 2. a vacuum adsorption type material distributing module; 201. a control panel; 202. a discharge port; 203. a cover plate; 204. an electrically controlled universal clutch; 205. a drive shaft; 206. a bearing; 207. a bearing support; 208. a vacuum generator; 209. a controller; 210. mounting screws; 211. a hexagonal copper cylinder; 212. a negative pressure sensor; 213. a side plate; 214. a screw; 215. a storage bin; 216. a power input shaft; 3. a motor gear transmission mechanism; 301. a servo motor; 302. a face gear; 303. a spur gear cylinder.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1-2 are schematic structural views of a one-drive-N circumferential micro screw feeder based on face gear transmission, in which fig. 1 is an external view, and six vacuum adsorption type material distribution modules 2 which are independent of each other and share a power source are taken as an example for illustration, and the six vacuum adsorption type material distribution modules 2 share a uniform outer cover 101, a mounting base 102 and a power source. Each individual vacuum adsorption type material separating module has an independent control device which is respectively arranged on the respective control panel 201. Fig. 2 is an internal structure view of the feeder of the invention, and a circumferential distributor is formed by six vacuum adsorption type distributing modules. Fig. 3 is a top view of the internal general structure of the feeder of the present invention, and fig. 4 is an enlarged view of the part a (i.e. the discharge port 202) in fig. 3, and it can be seen from the figure that the power source is located at the middle position of the whole system, and the power is distributed to each subassembly module through the middle motor-face gear-spur gear.

Fig. 5 is an exploded view of the surface gear transmission-based one-drive-N circumferential micro screw feeder of the present invention, which includes a vacuum adsorption type material distribution module 2, a mounting base 102, a surface gear 302, a servo motor 301, a cover plate 203, and a spur gear 303. The basic principle of the vacuum adsorption type material distribution module 2 is widely applied to micro screw suction and nail suction equipment which is installed on the installation base 102, and the cylindrical spur gear 303 is installed on the input shaft and fixed on the input shaft through a set screw. Face gear 302 is mounted on the output shaft of servo motor 301 and is also secured to the shaft by set screws, where six spur gears 303 and face gear 302 form a circumferentially distributed gear train. In addition, the servo motor 301 is mounted on the mounting base 102 by screws.

Fig. 6 is an exploded view of a single vacuum adsorption type material separating module, and the vacuum adsorption type material separating module 2 is composed of a bin 215 and an internal rotating mechanism, and is provided with a power input shaft 216, as shown in fig. 6. The power input shaft 216 is mounted with one end of the electrically controlled universal clutch 204, and the other end is connected with the transmission shaft 205, where the electrically controlled universal clutch 204 has different angle transmission and can realize the on-off of the power transmission in an electrically controlled manner. The drive shaft 205 is mounted on a support consisting of a bearing 206 and a bearing bracket 207. The other end of the transmission shaft 205 is provided with a spur gear 303, and the spur gear 303 and the face gear 302 form a set of meshing pairs for transmitting power from the servo motor 301. The support base 203 is used for supporting the vacuum adsorption type material distributing module 2, and the vacuum generator 208 is used for generating vacuum required by the vacuum adsorption type material distributing module 2. The controller 209 is mounted on the vacuum adsorption type material distributing module 2 through a mounting screw 210 and a hexagonal copper column 211, and is used for controlling the on-off of the electric control universal clutch 204 and related signal output according to an external signal. A negative pressure sensor 212 is also mounted on the vacuum adsorption type material distribution module 2 to detect an internal negative pressure value of the vacuum adsorption type material distribution module 2, thereby outputting a signal to the controller 209. The control panel 201 (which is installed on the side plate 213) is installed on the vacuum adsorption type material distributing module 2 and the supporting base 203 through screws 214, and its main functions include: and power supply connectors required inside, external data exchange and an operating state indicator lamp are provided.

The working process of the circumferential miniature screw feeding system based on face gear transmission is as follows:

(1) the motor is started to rotate, the face gear is driven to rotate, so that the vacuum adsorption type material distribution module is driven to work, when the ith path of material distribution module detects that the screw is in place, the ith path of controller receives a signal and gives out two paths of signals, the first path of signal is sent to the electric control universal coupling to control the electric control universal coupling to cut off power, and the transmission system in the ith path of material distribution module stops rotating. The second path of signal is sent to a master controller of the workstation/production line to inform the master controller of the ith path of signal distribution module that the material is ready and is in a state of waiting for material taking;

(2) when the material to be taken in the ith path of material distribution module is taken away, the controller of the ith path of material distribution module sends a signal to the internal electric control universal coupling after receiving the signal, informs the internal electric control universal coupling to start to engage power and rotate, and performs the next material taking action;

(3) when all the parts to be taken are arranged in the multi-path material distribution modules, a queuing program of the parts to be taken is automatically started, so that the system can take the materials in sequence, and the system is ensured not to be in a disordered state.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A drag miniature screw feeder of N circumference formula based on face gear drive divides the material module including the vacuum adsorption formula, the vacuum adsorption formula divides the material module to include power input shaft and discharge gate, its characterized in that, the miniature screw feeder of circumference formula includes:

the motor gear transmission mechanism comprises a servo motor, a face gear and a cylindrical straight gear, wherein the servo motor is fixedly arranged on an installation base between the vacuum adsorption type material distribution modules, the face gear is fixed on an output shaft of the servo motor, the cylindrical straight gear is connected with a power input shaft of the vacuum adsorption type material distribution modules, and gear teeth of the cylindrical straight gear are meshed with teeth on the face gear; each vacuum adsorption type material distribution module is provided with an independent control device and is respectively installed on a respective control panel, each vacuum adsorption type material distribution module comprises a material bin, an internal rotating mechanism, an electric control universal clutch, a transmission shaft, a vacuum generator, a controller and a negative pressure sensor, each vacuum adsorption type material distribution module is provided with a power input shaft, one end of each power input shaft is connected with one end of the electric control universal clutch, the other end of each power input shaft is connected with the transmission shaft, the other end of each transmission shaft is connected with a cylindrical straight gear, and the vacuum generators, the controllers and the negative pressure sensors are installed on the material distribution modules;

2. The one-drag-N circumferential micro screw feeder based on face gear transmission as claimed in claim 1, wherein the number of the vacuum adsorption type material distribution modules is 6, and 6 spur gears and the face gear form a circumferentially distributed gear transmission system.

3. The micro N-one-drive-on-circumference screw feeder based on the face gear transmission as claimed in claim 1, wherein the electrically controlled universal clutch can be driven at different angles and can be electrically controlled to realize the on-off of the power transmission.

4. The face gear drive-based one-drag-N circumferential micro screw feeder of claim 1, wherein the drive shaft is mounted on a support consisting of a bearing and a bearing support.

5. The face gear transmission-based one-drag-N circumferential micro screw feeder according to claim 1, wherein the vacuum adsorption type material distribution module is fixed on the mounting base through a supporting seat.

6. A feeding method of a one-drag-N circumferential type miniature screw feeder based on face gear transmission is characterized by comprising the following steps: