CN212203977U

CN212203977U - Grease injection machine and control system for bearing

Info

Publication number: CN212203977U
Application number: CN201921781061.0U
Authority: CN
Inventors: 阚亚雄; 赵飞
Original assignee: Zhenjiang College
Current assignee: Zhenjiang College
Priority date: 2019-10-22
Filing date: 2019-10-22
Publication date: 2020-12-22
Anticipated expiration: 2029-10-22

Abstract

The invention discloses a grease injection machine for a bearing and a control system. It includes the frame, annotate fat mechanism and rotatory even fat mechanism of notes that set up in the frame, annotate fat mechanism and can annotate the fat from the inner circle gap inside of waiting to annotate the bearing of fat, rotatory even fat mechanism can push the outer lane rotary motion of bearing and drive the lubricating grease of injecting into the bearing and rotate in the lump and carry out even fat, be provided with in the frame and be located annotate the bearing conveying mechanism of fat mechanism and rotatory even fat mechanism below, bearing conveying mechanism can move the bearing and annotate the fat operation or move and carry out even fat operation under even fat mechanism to annotating under the fat mechanism. The advantages are that: the integral mechanical structure and the control system are organically combined and complement each other, the structure design is ingenious, the installation is convenient, the automation degree is high, the grease injection is quick, uniform and accurate, the grease injection amount is adjustable, the grease injection requirements of different types of bearings can be met, the grease injection quality of the hub bearing is improved, the grease is saved, and the purchase cost is reduced.

Description

Grease injection machine and control system for bearing

Technical Field

The invention relates to a technology for adding lubricating grease to a hub bearing, in particular to a grease injection machine and a control system for a bearing, and belongs to the technical field of bearing assembly.

Background

The bearing is a part for fixing and reducing load friction coefficient in the mechanical transmission process, a hub bearing unit is used as a special bearing for an automobile hub, a lubricating grease injection process is needed, two grease injection methods are always adopted in the bearing production for a long time, one is a structure for injecting grease at two ends of a bearing end cover, for example, a bearing grease injection machine (application number: CN201510011539.1) in Chinese patent adopts the technology that the bearing grease injection machine comprises a frame, a grease injection cylinder, a grease injection disc and a grease delivery device, and the bearing grease injection machine can have the following problems when being used for a long time: the weight of the grease injected is not stable; the lubricating grease amount of a single set of bearings in a batch of bearings is not equal, if the grease injection amount is too much, the phenomenon of grease leakage of the bearings in rotation is easily caused, otherwise, if the grease injection amount is too little, the phenomenon of dry friction is easily caused when the bearings rotate, high temperature rise is caused during dynamic work, and the service life of the bearings is seriously influenced.

At present, a grease injection method for injecting lubricating grease into a gap between two inner rings of a hub bearing theoretically appears; for example, chinese utility model patent CN200620141399.6 discloses a hub bearing unit and a grease injection and equalization method thereof, which utilizes the gap between the small end faces of two inner rings after the bearing is assembled, the grease injection nozzle is opposite to the gap during grease injection, a grease outlet pipe injects grease into the bearing, and a mold on the grease injection system is utilized to clamp the outer ring of the bearing so as to make the outer ring rotate around the inner ring, thereby achieving the grease equalization effect, the method has the advantages that the grease injection average value of the inner ring gap is better, the grease distribution is more uniform, the disadvantages are that the gap of the inner ring of the hub bearing is difficult to be ensured due to the process precision problem, a gap may exist between the grease injection nozzle and the gap, thereby the grease is difficult to be completely injected into the inner ring gap in the actual production, the grease leakage phenomenon at the inner ring gap is easy to occur, in addition, the utility model only introduces the general hardware structure and the working principle of the grease injection, how to control the system is a difficult technical problem to solve.

Disclosure of Invention

The invention aims to solve the technical problem of providing a grease injection machine and a control system for a bearing, which are used for injecting grease quickly, uniformly and accurately, and the grease injection amount can be adjusted, so that the grease injection quality of a hub bearing is improved, grease is saved, and the cost is reduced.

In order to solve the technical problems, the grease injection machine for the bearing comprises a rack, a grease injection mechanism and a rotary grease homogenizing mechanism, wherein the grease injection mechanism is arranged on the rack and used for injecting grease into the bearing, the rotary grease homogenizing mechanism is used for homogenizing the grease into the bearing after grease injection, the grease injection mechanism can inject grease from the inner ring gap of the bearing to be injected with the grease, the rotary grease homogenizing mechanism can push the outer ring of the bearing to rotate and drive lubricating grease injected into the bearing to rotate together for homogenizing the grease, a bearing conveying mechanism is arranged on the rack and located below the grease injection mechanism and the rotary grease homogenizing mechanism, and the bearing conveying mechanism can move the bearing to be under the grease injection mechanism for grease injection operation or move to be under the grease homogenizing mechanism for homogenizing the grease.

Annotate fat mechanism and include the notes fat actuating cylinder that the frame top set up, connect the notes fat hydro-cylinder of annotating the piston rod bottom of annotating the fat actuating cylinder and connect the tubulose notes fat head on annotating the piston rod of fat hydro-cylinder, still including the notes fat bucket and the fat jar that fills that are located frame one side, the fat jar that fills is through filling fat delivery piping connection notes fat hydro-cylinder and can be carried to annotating fat hydro-cylinder department by filling the fat delivery pipe after with lubricating grease extrusion, and then annotates inside the fat head pours lubricating grease into the wheel bearing inner circle gap into by the tubulose.

The top of the grease filling cylinder is provided with a grease filling motor, and the grease filling motor is started to perform grease filling operation in the grease filling barrel.

Rotatory even fat mechanism includes the even fat actuating cylinder that the frame top set up, connects the even fat motor in the piston rod bottom of even fat actuating cylinder and connects the even fat fixed disk in even fat motor bottom, even fat fixed disk can promote bearing inner race rotary motion and drive the rotatory even fat in the lump of lubricating grease in the bearing.

The bearing conveying mechanism comprises a guide rail arranged on the rack, a guide rail sliding block arranged on the guide rail and a guide rail motor capable of driving the guide rail sliding block to reciprocate along the guide rail, a bearing fixing base used for arranging a bearing is fixedly arranged on the guide rail sliding block, and the guide rail motor can drive the guide rail sliding block to move so as to drive the bearing fixing base to move to a corresponding station along the guide rail.

The grease injection driving cylinder is a grease injection driving cylinder, the grease homogenizing driving cylinder is a grease homogenizing driving cylinder, the grease filling cylinder is a grease filling cylinder, the grease injection driving cylinder and the grease homogenizing driving cylinder are controlled by a set of pneumatic system, and the grease injection cylinder and the grease filling motor are controlled by a set of hydraulic system.

And a weight sensor is also arranged on the guide rail sliding block.

A control system of a grease injection machine for a bearing comprises a PLC (programmable logic controller), a variable frequency driving module, a grease filling motor driving module, a guide rail motor driving module, a frequency converter, a grease filling motor driver, a guide rail motor driver, a weight sensor, a control button, an electromagnetic contactor, a touch screen and a battery unit, wherein a PWR (Power line reactor) power module, a digital quantity signal input and output module, an ADC (analog to digital converter) analog signal input and output module and a serial port communication module are integrated on the PLC; the ADC analog signal input/output module is connected with the weight sensor through a signal line, the digital quantity input/output module is connected with the electromagnetic contactor and the control button through signal lines respectively, the serial port communication module is in serial port communication with the HMI touch screen through a serial port communication line and can receive instructions of the touch screen and feed back real-time data of the PLC programmable controller, and the PLC programmable controller is connected with the variable frequency driving module, the grease filling motor driving module and the guide rail motor driving module through communication lines; the battery unit supplies power to the PLC programmable controller, the variable frequency driving module, the grease filling motor driving module and the guide rail motor driving module through the PWR power supply module; the guide rail motor is connected with the guide rail motor driver through a signal line, the grease filling motor is connected with the grease filling motor driver through a signal line, and the grease homogenizing motor is connected with the frequency converter through a signal line.

The frequency conversion driving module, the grease filling motor driving module and the guide rail motor driving module are all provided with IGBT rectification inversion interfaces and PWM pulse output interfaces, the frequency conversion driving module, the grease filling motor driving module and the guide rail motor driving module are all connected with the battery unit through respective IGBT rectification inversion interfaces, and the frequency conversion driving module, the grease filling motor driving module and the guide rail motor driving module are all connected with the PWM pulse input interfaces of the corresponding guide rail motor driver, the grease filling motor driver and the frequency converter through respective PWM pulse output interfaces through communication lines.

A control method of a control system based on a grease injection machine for bearings comprises the following steps:

step (1): after a control system is powered on, initializing, wherein in the initialization process, a PLC (programmable logic controller) is initialized, a touch screen is initialized, a variable frequency driving module, a grease filling motor driving module and a guide rail motor driving module are initialized, a grease filling motor is initialized, whether a bearing stays at an initial station or not is detected, and the size of a gap of an inner ring of the bearing is detected;

step (2): reading a grease injection amount target expected by a bearing grease injection machine, and converting target data into specific grease injection weight;

and (3): and judging whether the target grease injection amount is reached after the grease injection of the bearing grease injection machine, if not, immediately calling parameters in the PLC to drive the grease injection oil cylinder to work so that the grease injection weight of the bearing is continuously changed until the target grease injection amount is reached. The invention has the advantages that:

1. the structure design of the grease filling machine can utilize the clearance of the inner ring of the bearing to fill grease, simultaneously, the grease homogenizing fixed disc drives the outer ring of the hub bearing to quickly level grease to fill grease, the automatic grease filling work of the bearing is realized, the working efficiency is obviously improved, the labor intensity is greatly reduced, the grease filling mode of the inner ring of the bearing is more sufficient, the grease filling amount can be adjusted in real time through the grease filling stepping motor and the grease filling oil cylinder, when the target grease filling amount is not consistent with the actually detected grease filling amount, the Siemens S7-200 PLC programmable controller corrects the output pulse of the controller through the PID self-setting adjustment algorithm, the rotating speed of the grease filling stepping motor is increased or reduced, the stroke of the grease filling oil cylinder is increased or reduced, the larger the working stroke of the grease filling oil cylinder is, otherwise, the grease filling amount is reduced, so that the grease filling weight of the hub bearing is adjusted in real time until the target grease filling amount is reached, the grease injection quantity in the bearing can meet the target requirement, the cleanliness of the surface of the bearing can be kept, and the grease injection requirement of hub bearings of various specifications can be met;

2. mechanical parts such as a rack, a weight sensor, a tubular grease injection head, a grease filling cylinder and a grease injection cylinder in the grease injection machine are mechanically connected in a bolt and nut mode, and the grease injection machine is convenient to connect, reliable to fix and convenient to install and detach.

3. The control part in the control system adopts a hardware control framework combining a variable frequency drive module, a grease filling motor drive module, a guide rail motor drive module, a frequency converter, a grease filling motor driver, a guide rail motor driver, a weight sensor and the like with a programmable controller, a PID (proportion integration differentiation) self-setting grease filling quantity adjusting algorithm is adopted in a software control program, the high precision and the high stability of PID control are combined with the rapidity and the small overshoot of a fuzzy self-setting algorithm, and finally the fine adjustment of the grease filling quantity is controlled and finished through the self-setting PID adjusting algorithm, so that the problem of large error of the grease filling quantity in the traditional manual estimation adjustment is avoided;

4. its overall mechanical structure and control system combine organically, supplement each other, not only structural design is ingenious, simple to operate, and degree of automation is high moreover, annotates the fat quick, even and accurate, and annotates the adjustable fat volume, can adapt to the notes fat requirement of the bearing of different types, improves the wheel hub bearing and annotates fat quality, practices thrift the grease, has reduced purchasing cost.

Drawings

FIG. 1 is a schematic perspective view of a grease injection machine for bearings according to the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

FIG. 3 is a cross-sectional view showing the oil-filling fit state of the bearing fixing base and the tubular grease-filling head after the bearing is installed in the present invention;

FIG. 4 is a schematic diagram of a hydraulic system of the present invention;

FIG. 5 is a schematic diagram of the pneumatic system of the present invention;

FIG. 6 is a schematic diagram of a control system of the grease injection machine for bearings according to the present invention;

FIG. 7 is a flow chart of a control system of the grease filling machine for bearings according to the present invention.

Detailed Description

The grease injecting machine and the control system for bearings according to the present invention will be described in further detail with reference to the accompanying drawings and the embodiments.

The first embodiment is as follows:

the grease injecting machine for the bearing comprises a frame 1, a grease injecting mechanism 3 and a rotary grease homogenizing mechanism 4, wherein the grease injecting mechanism 3 is arranged on the frame 1 and used for injecting grease to a hub bearing 2, the rotary grease homogenizing mechanism 4 is used for homogenizing the grease to the bearing after grease injection, the grease injecting mechanism 3 can inject grease from the inner ring gap of the hub bearing 2 to be injected with grease, the rotary grease homogenizing mechanism 4 can push the outer ring of the bearing 2 to rotate and drive lubricating grease injected into the bearing to rotate together for homogenizing the grease, a bearing conveying mechanism 5 is arranged on the frame 1 and positioned below the grease injecting mechanism and the rotary grease homogenizing mechanism, the bearing conveying mechanism 5 can move the bearing 2 to be under the grease injecting mechanism for grease injection operation or to be under the grease homogenizing mechanism for grease homogenizing operation, and as can be seen from the figure, the grease injecting mechanism 3 comprises a grease injecting driving cylinder 6 arranged on the frame, a grease injecting cylinder 7 connected to the bottom of a piston rod of the grease injecting driving cylinder and a tubular grease injecting head 8 connected to the piston rod of the grease injecting cylinder, the grease injection driving cylinder 6 is fixedly installed through an upright post installed on a rack and a supporting plate installed at the top of the upright post by using bolts, so that a piston rod of the installed grease injection driving cylinder faces downwards vertically, the grease injection driving cylinder further comprises a grease injection barrel 9 and a grease filling cylinder 10 which are positioned on one side of the rack and a grease filling stepping motor 30 installed at the top of the grease filling cylinder 10, the grease filling cylinder 10 is connected with a grease injection cylinder 7 through a grease filling conveying pipe 11 and can convey lubricating grease to the grease injection cylinder through the grease filling conveying pipe after being pressed out, and then the lubricating grease is injected into a gap of an inner ring of a hub bearing through a tubular grease injection head; the rotary grease homogenizing mechanism 4 comprises a grease driving cylinder 12 arranged on the rack, a grease stepping motor 13 connected to the bottom of a piston rod of the grease driving cylinder through a bolt, and a grease fixing disk 14 connected to the bottom of the grease motor through a bolt, wherein the grease driving cylinder 12 is fixedly installed through an upright post installed on the rack and a supporting plate installed at the top of the upright post by using a bolt, so that the piston rod of the installed grease driving cylinder 12 faces downwards vertically, and the grease fixing disk 14 can push the outer ring of a bearing to rotate and drive lubricating grease in the bearing to uniformly rotate; the bearing conveying mechanism 5 comprises a guide rail 15 which is arranged on the frame and is installed through bolts, a guide rail slide block 16 which is installed on the guide rail, a guide rail stepping motor 17 which can drive the guide rail slide block to reciprocate along the guide rail, and a weight sensor 19 which is installed on the guide rail slide block 16, wherein a bearing fixing base 18 which is used for installing a hub bearing is fixedly installed on the guide rail slide block 16 through bolts, after the guide rail stepping motor 17 rotates, the guide rail slide block can be driven to move so as to drive the bearing fixing base to move to a corresponding station (under a grease injection mechanism or under a grease evening mechanism) along the guide rail together, in addition, the frame 1 is connected with a comprehensive control box through a support column, an S7-200 PLC programmable controller 20, an HMI touch screen 29 and a plurality of control buttons 27 are installed in the control box, wherein a start control button, an emergency stop control button, the HMI touch screen 29 is in serial communication connection with the S7-200 PLC 20, and the HMI touch screen 29 is used as a main human-computer input/output interface and is responsible for correcting the grease injection amount, debugging and running programs, displaying states and the like.

In addition, for the drives of the grease injection driving cylinder, the grease homogenizing driving cylinder, the grease injection cylinder 7 and the like of the grease injection machine for bearings of the present invention, as can be seen from fig. 4 and 5, the operations of the grease injection driving cylinder and the grease homogenizing driving cylinder are controlled by the same pneumatic system, and the operation of the grease injection cylinder 7 is controlled by a set of hydraulic system, wherein the pneumatic system uses the grease injection driving cylinder and the grease homogenizing driving cylinder as executing elements to respectively execute the lifting actions of the grease injection cylinder, the tubular grease injection head, the grease homogenizing stepping motor and the grease homogenizing fixed disk, and the pneumatic system further comprises a variable frequency motor 31, an air storage tank 32, an air filter 33, a pressure regulating valve 34 with a pressure gauge, an oil atomizer 35, a first two five-way electromagnetic valve 36, a second two five-way electromagnetic valve 37, a first throttle valve 38, a second throttle valve 39, a third throttle valve 40, a fourth throttle valve 41, a first check valve 42, a second check valve 43, a third check valve, A third check valve 44 and a fourth check valve 45, the concrete system is as shown in figure 5, a variable frequency motor 31 is sequentially connected with an air storage tank 32, an air filter 33, a pressure regulating valve 34 with a pressure gauge and an oil atomizer 35, the output end of the oil atomizer 35 is connected with a first two-position five-way electromagnetic valve 36 and a second two-position five-way electromagnetic valve 37 in parallel, the air outlet of the first two-position five-way electromagnetic valve 36 is connected with the air inlet of a grease injection driving cylinder through a third throttle valve 40 and a fourth throttle valve 41 which are connected in parallel, the air inlet of the first two-position five-way electromagnetic valve 36 is connected with the air outlet of the grease injection driving cylinder through a first throttle valve 38 and a second throttle valve 39 which are connected in parallel, the air outlet of the second two-position five-way electromagnetic valve 37 is connected with the air inlet of a grease homogenizing driving cylinder through a third check valve 44 and a fourth check valve 45 which are connected in parallel, the air inlet of the second two-, the hydraulic system uses the grease injection oil cylinder as an execution element, the hydraulic system further comprises a grease filling stepping motor 30, an oil pump 45, a pressure relay 46, a safety valve 47, a first two-position three-way valve 48 and a second two-position three-way valve 49, the concrete system is shown in figure 4, the grease filling stepping motor 30 is connected with the oil pump 45, the oil pump 45 is divided into two paths, the pressure relay 46 and the safety valve 47 are connected in sequence all the way, the grease injection oil cylinder is connected with the other path through the first two-position three-way valve 48, and the first two-position three-way valve 48 is further connected with.

Example two:

the invention relates to a control system of a grease injection machine for bearings, which comprises a PLC (programmable logic controller) 20, a variable frequency drive module 21, a grease filling motor drive module 22, a guide rail motor drive module 23, a frequency converter 24, a grease filling motor driver 25, a guide rail motor driver 26, a weight sensor 19, a control button 27, an electromagnetic contactor, a touch screen 29 and a 24V lithium battery 28, wherein the PLC 20 is integrated with a PWR (Power line reactor) power module, a digital quantity signal input and output module, an ADC (analog to digital converter) analog signal input and output module and a serial port communication module; the variable frequency driving module 21, the grease filling motor driving module 22 and the guide rail motor driving module 23 all adopt EM253 position control modules, the ADC analog signal input-output module is connected with the weight sensor 19 through a signal line, the digital quantity input-output module is connected with the electromagnetic contactor and the control button 27 through a signal line, the serial port communication module realizes serial port communication with the HMI touch screen 29 through a serial port communication line and can receive instructions of the touch screen and feed back real-time data of the PLC programmable controller 20, and the PLC programmable controller 20 is connected with the variable frequency driving module 21, the grease filling motor driving module 22 and the guide rail motor driving module 23 through communication lines; the 24V lithium battery 28 supplies power to the PLC 20, the variable frequency driving module 21, the grease filling motor driving module 22 and the guide rail motor driving module 23 through the PWR power supply module; the guide rail stepping motor 17 is connected with the guide rail motor driver 26 through a signal line, the grease filling stepping motor 30 is connected with the grease filling motor driver 25 through a signal line, and the grease homogenizing stepping motor 13 is connected with the frequency converter 24 through a signal line, so that the control of the guide rail motor 17, the grease filling stepping motor 30 and the grease homogenizing stepping motor 13 is realized.

Further, as can be seen from the figure, the variable frequency driving module 21, the grease filling motor driving module 22, and the guide rail motor driving module 23 all have an IGBT rectification inversion interface and a PWM pulse output interface, the variable frequency driving module 21, the grease filling motor driving module 22, and the guide rail motor driving module 23 are all connected to the battery unit through their respective IGBT rectification inversion interfaces, and the variable frequency driving module 21, the grease filling motor driving module 22, and the guide rail motor driving module 23 are all connected to the PWM pulse input interfaces of the corresponding guide rail motor driver 26, the grease filling motor driver 25, and the frequency converter 24 through their respective PWM pulse output interfaces via communication lines.

Example three:

the invention discloses a control method of a control system based on a grease injection machine for bearings, which is characterized in that: the method comprises the following steps:

step (1): after a control system is powered on, initializing, wherein in the initialization process, a PLC (programmable logic controller) 20, a touch screen 29, a variable frequency driving module 21, a grease filling motor driving module 22, a guide rail motor driving module 23 and a grease filling motor 30 are initialized, detecting whether a hub bearing stops on an initial grease filling station on line, detecting the size of the clearance of an inner ring, and detecting whether a bearing motor is overloaded or not and whether electric leakage exists or not;

step (2): reading a grease injection amount target expected by a bearing grease injection machine, and converting target data into specific grease injection weight; the grease injection work of the hub bearing is started, and the working process is as follows:

firstly, starting a grease filling stepping motor 30 to fill grease into a grease filling barrel 9, wherein a first two-position five-way electromagnetic valve 36, a second two-position five-way electromagnetic valve 37, a first two-position three-way valve 48 and a second two-position three-way valve 49 are not electrified; when the bearing inner ring gap needs to be filled with grease, the electromagnet of the first two-position five-way electromagnetic valve 36 is electrified, the grease injection cylinder starts to work, the grease injection oil cylinder 7 and the tubular grease injection head 8 part are lowered into the inner ring gap, the electromagnet of the second two-position three-way valve 49 is electrified, the second two-position three-way valve 49 is switched to the grease injection station, the grease injection oil cylinder 7 works, the electromagnets in other electromagnetic valves are not electrified, the grease injection to the bearing inner ring gap is started, and after the grease injection to the inner ring gap is finished, the electromagnet of the first two-position three-way valve 48 is powered off, and the grease injection oil cylinder 7 stops working;

then, switching to a bearing grease homogenizing station (right below a grease homogenizing mechanism), switching off the power of the electromagnet of the first two-position five-way electromagnetic valve 36 to enable the grease injecting cylinder 7 to work, returning the tubular grease injecting head 8 component to the initial station, switching on the electromagnet of the second two-position five-way electromagnetic valve 37 to enable the grease homogenizing cylinder 12 to work, lowering the grease homogenizing stepping motor 13 and the grease homogenizing fixed disk 14 to the grease homogenizing station, starting the grease homogenizing stepping motor 13 to work, pushing the outer ring of the hub bearing to move clockwise through the grease homogenizing fixed disk 14 to drive lubricating grease in the bearing to rotate together to achieve the purpose of homogenizing grease, switching off the power of the electromagnet of the second two-position five-way electromagnetic valve 37 after timing for 20 seconds by a timer in a control system, returning the piston rod of the grease homogenizing cylinder 12 to the original position, lifting the grease stepping motor 13 and the grease homogenizing fixed disk 14 component.

And (3): and judging whether the target grease injection amount is reached after the grease injection of the bearing grease injection machine, if not, immediately calling a PID self-tuning adjustment algorithm in the PLC 20 to drive the grease injection oil cylinder 7 to work, so that the grease injection weight of the bearing is continuously changed until the target grease injection amount is reached.

In addition, in the whole control process, the specific control principle of the PLC is as follows:

firstly, after a Siemens S7-200 PLC programmable controller 20 is powered on, a variable frequency driving module 21, a grease filling motor driving module 22 and a guide rail motor driving module 23 complete system initialization, the Siemens S7-200 PLC programmable controller 20 reads the manually input grease filling amount in an HMI touch screen through a PORT0 serial PORT communication module, the Siemens S7-200 PLC programmable controller 20 converts a target instruction into PWM target pulse numbers at each moment according to the control instruction of the target grease filling amount, and the variable frequency driving module 21 and the grease filling motor driving module 22 send the PWM target pulse numbers to a frequency converter 24 and a grease filling stepping motor driver 25 through a PWM pulse output PORT at corresponding moments according to the PWM target pulse numbers; when the target pulse number is sent to the pneumatic system variable frequency motor 31 and the grease filling stepping motor 30, the real-time data of the weight sensor 19 is received, and when the target grease filling amount is not consistent with the actually detected grease filling amount, the Siemens S7-200 PLC programmable controller 20 corrects the output pulse of the controller through a PID self-tuning adjusting algorithm, drives the grease filling oil cylinder 7 to work, so that the grease filling weight of the hub bearing is continuously changed until the target grease filling amount is reached.

Claims

1. The utility model provides a fat machine is annotated to bearing which characterized in that: annotate fat mechanism (3) and be used for carrying out even fat rotatory even fat mechanism (4) of even fat to the bearing of annotating after the fat that set up including frame (1), annotate fat mechanism (3) and can follow the inner circle gap inside of waiting to annotate fat bearing (2) annotate the fat, rotatory even fat mechanism (4) can promote the outer lane rotary motion of bearing (2) and drive the lubricating grease of injecting into the bearing and rotate in the lump and carry out even fat, be provided with on frame (1) and be located and annotate the bearing conveying mechanism (5) of fat mechanism and rotatory even fat mechanism below, bearing conveying mechanism (5) can move bearing (2) and annotate the fat operation or move and carry out even fat operation under even fat mechanism under annotating the fat mechanism.

2. The grease injecting machine for bearings according to claim 1, wherein: annotate fat mechanism (3) including annotating fat actuating cylinder (6) that the frame top set up, connect annotate fat hydro-cylinder (7) and the tubulose notes fat head (8) of connection on the piston rod of annotating the fat hydro-cylinder in the piston rod bottom of annotating the fat actuating cylinder, still including annotating fat bucket (9) and filling fat jar (10) that are located frame one side, filling fat jar (10) are connected through filling fat conveyer pipe (11) and are annotated fat hydro-cylinder (7) and can be carried to annotating fat hydro-cylinder department by filling the fat conveyer pipe after with lubricating grease extrusion, and then are annotated the fat head and pour into the bearing inner circle gap with lubricating grease inside by the tubulose.

3. The grease injecting machine for bearings according to claim 2, characterized in that: the top of the grease filling cylinder (10) is provided with a grease filling motor (30), and when the grease filling motor (30) is started, grease filling operation can be carried out in the grease filling barrel (9).

4. A grease injecting machine for a bearing according to claim 3, characterized in that: rotatory even fat mechanism (4) include even fat actuating cylinder (12) that the frame top set up, connect even fat motor (13) in the piston rod bottom of even fat actuating cylinder and connect even fat fixed disk (14) in even fat motor bottom, even fat fixed disk (14) can promote bearing inner race rotary motion and drive the interior lubricating grease of bearing even fat in the lump rotation.

5. A grease injecting machine for bearings according to claim 4, characterized in that: bearing conveying mechanism (5) guide rail (15) that set up in the frame, guide rail slider (16) of installation on the guide rail and can drive guide rail slider along guide rail reciprocating motion's guide rail motor (17), thereby fixed mounting has bearing unable adjustment base (18) that are used for settling the bearing on guide rail slider (16), thereby guide rail motor (17) can drive the action of guide rail slider and drive bearing unable adjustment base and move to corresponding station along the guide rail in the lump.

6. A grease injecting machine for bearings according to claim 5, characterized in that: annotate fat actuating cylinder (6) and drive the cylinder for annotating the fat, even fat actuating cylinder (12) are even fat actuating cylinder, fat cylinder (10) are the fat cylinder, annotate fat actuating cylinder and even fat actuating cylinder and drive the cylinder and control by a set of pneumatic system, annotate fat hydro-cylinder (7) and be controlled by a set of hydraulic system.

7. A grease injecting machine for bearings according to claim 6, characterized in that: and a weight sensor (19) is also arranged on the guide rail sliding block (16).

8. A control system of a grease injecting machine for bearings according to claim 4, characterized in that: the system comprises a PLC (programmable logic controller) (20), a variable frequency driving module (21), a grease filling motor driving module (22), a guide rail motor driving module (23), a frequency converter (24), a grease filling motor driver (25), a guide rail motor driver (26), a weight sensor (19), a control button (27), an electromagnetic contactor, a touch screen (29) and a battery unit (28), wherein the PLC (20) is integrated with a PWR power module, a digital quantity signal input and output module, an ADC analog signal input and output module and a serial port communication module; the ADC analog signal input and output module is connected with the weight sensor (19) through a signal line, the digital quantity input and output module is connected with the electromagnetic contactor and the control button (27) through signal lines respectively, the serial port communication module is in serial port communication with the HMI touch screen (29) through a serial port communication line and can receive instructions of the touch screen and feed back real-time data of the PLC programmable controller (20), and the PLC programmable controller (20) is connected with the variable frequency drive module (21), the grease filling motor drive module (22) and the guide rail motor drive module (23) through communication lines; the battery unit (28) supplies power to the PLC (programmable logic controller) 20, the variable frequency driving module (21), the grease filling motor driving module (22) and the guide rail motor driving module (23) through the PWR power module; the guide rail motor (17) is connected with the guide rail motor driver (26) through a signal line, the grease filling motor (30) is connected with the grease filling motor driver (25) through a signal line, and the grease homogenizing motor (13) is connected with the frequency converter (24) through a signal line.

9. The control system of a grease filling machine for bearings according to claim 8, characterized in that: frequency conversion drive module (21), fat filling motor drive module (22), guide rail motor drive module (23) all have IGBT rectification contravariant interface and PWM pulse output interface, frequency conversion drive module (21), fat filling motor drive module (22), guide rail motor drive module (23) all link to each other with the battery unit through respective IGBT rectification contravariant interface, frequency conversion drive module (21), fat filling motor drive module (22), guide rail motor drive module (23) all link to each other with the PWM pulse input interface of corresponding guide rail motor driver (26), fat filling motor driver (25) and converter (24) through respective PWM pulse output interface through the communication line.