CN212931306U

CN212931306U - Automatic detecting and adjusting device for height position of die table of forming machine

Info

Publication number: CN212931306U
Application number: CN202021824983.8U
Authority: CN
Inventors: 吴任翔; 罗嘉俊; 郑旭山; 许晋丰
Original assignee: Shantou Dacheng Environmental Protection Precision Machinery Technology Co ltd; Guangdong Dacheng Technology Co ltd
Current assignee: Shantou Dacheng Environmental Protection Precision Machinery Technology Co ltd; Guangdong Dacheng Technology Co ltd
Priority date: 2020-08-27
Filing date: 2020-08-27
Publication date: 2021-04-09
Anticipated expiration: 2030-08-27

Abstract

The utility model relates to a mould platform high position automated inspection adjusting device of make-up machine, including frame, mould platform and the high adjustment mechanism that can adjust the high position of mould platform, high adjustment mechanism installs in the frame, its characterized in that: the automatic detection and adjustment device for the height position of the die table further comprises a control device and a linear displacement sensor, the linear displacement sensor is mounted on the rack and positioned on one side of the die table, and a measuring part of the linear displacement sensor is connected with the die table; the linear displacement sensor is electrically connected with the corresponding input end of the control device, and the height adjusting mechanism is electrically connected with the corresponding output end of the control device. The utility model discloses not only can improve the precision to the high position control of mould platform, the work load of data conversion among the reducible procedure moreover to improve the stability and the reliability of data.

Description

Automatic detecting and adjusting device for height position of die table of forming machine

Technical Field

The utility model relates to a make-up machine technical field, concretely relates to mould platform height position automated inspection adjusting device of make-up machine.

Background

The forming machine generally comprises a machine frame, a plurality of guide pillars, a lower die table, an upper die table, a lower die, an upper die and a lower die lifting mechanism, wherein the lower die table and the upper die table are both arranged on the guide pillars, the lower die is arranged on the lower die table, the upper die is arranged on the upper die table, and the power output end of the lower die lifting mechanism is connected with the lower die table. The lower die lifting mechanism drives the lower die table to move up and down to realize die closing and die opening.

In order to adapt to the production of products with different specifications, the height position of an upper die table needs to be adjusted, generally, a height adjusting mechanism is arranged between a rack and the upper die table, and the upper die table is arranged on the rack through the height adjusting mechanism; the height adjusting mechanism generally comprises a height adjusting motor, a speed reducer, a chain and a plurality of chain wheels, wherein the height adjusting motor and the speed reducer are both arranged on the upper die table, each chain wheel is rotatably arranged on the upper die table, the axis of each chain wheel is arranged along the vertical direction, the height adjusting motor is in transmission connection with one chain wheel through the speed reducer, and each chain wheel is positioned on the inner side of the chain and tensioned together with the chain; the upper end of each guide pillar is provided with a thread section, each chain wheel is provided with a pillar hole, the thread section at the upper end of each guide pillar is respectively positioned in the pillar hole of the corresponding chain wheel, and the inner wall of each pillar hole is provided with an inner thread meshed with the thread section. During operation, the height adjusting motor drives the corresponding chain wheels to rotate through the speed reducer, the remaining chain wheels are driven to rotate through the chain, the chain wheels are enabled to move up and down along the thread sections on the corresponding guide pillars respectively, and then the upper die table is driven to lift along the guide pillars, so that the height position of the upper die table is adjusted.

In order to realize the accurate adjustment of the height position of the upper mold table, at present, an encoder is generally installed on an output shaft of a height adjusting motor, after a PLC controller reads a pulse value of the encoder, an actual height position when the upper mold table is finely adjusted is obtained through conversion, the actual height position is compared and judged with a target position value, a corresponding control signal is sent to the height adjusting motor again, the height position of the upper mold table is adjusted until the actual height position of the upper mold table is the same as the target position value, the PLC controller enables the height adjusting motor to pause to operate, and the upper mold table is accurately stopped at the target position, however, the mode that the actual height position when the upper mold table is finely adjusted is obtained through conversion of the pulse value of the encoder read by the PLC controller has the following defects: (1) if the forming machine is careless for maintenance after a customer uses the machine for a period of time, the encoder is easily subjected to electric leakage interference or electromagnetic interference in the operation process of the height adjusting motor, so that the condition of pulse number loss or error counting occurs, and the accuracy of adjusting the height position of the die table is influenced; (2) registers of PLC controllers of certain brands can be automatically cleared after being powered up, the numerical value of the register needs to be manually assigned to another variable stored in a power-off mode in each scanning period in a program, and an instruction for reassigning the numerical value of the variable to a counting register in one period is executed each time the power is powered up again, so that data can be memorized after each power-up again, and the operation is inconvenient; (3) after reading the pulse value of the encoder, the PLC controller needs to perform a series of conversions in combination with data such as the reduction ratio of the speed reducer, the transmission ratio of the transmission mechanism (such as the transmission ratio between the sprockets), the thread pitch of the guide post thread section, and the like, so as to obtain the actual height position of the upper mold during fine adjustment, which greatly increases the workload of data conversion in the program and also increases the maintenance cost of the program.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a mould platform high position automatic detection adjusting device of make-up machine is provided, this kind of mould platform high position automatic detection adjusting device not only can improve the precision to mould platform high position control, but also the work load of data conversion among the reducible procedure to improve the stability and the reliability of data. The technical scheme is as follows:

the utility model provides a mould platform high position automated inspection adjusting device of make-up machine, includes frame, mould platform and can carry out the height control mechanism who adjusts to the high position of mould platform, and height control mechanism installs in the frame its characterized in that: the automatic detection and adjustment device for the height position of the die table further comprises a control device and a linear displacement sensor, the linear displacement sensor is mounted on the rack and positioned on one side of the die table, and a measuring part of the linear displacement sensor is connected with the die table; the linear displacement sensor is electrically connected with the corresponding input end of the control device, and the height adjusting mechanism is electrically connected with the corresponding output end of the control device.

During working, the position of a measuring part of the linear displacement sensor is determined as an original position, and a target displacement amount required to be adjusted in the height position of the die table is determined according to process requirements; then the control device outputs a starting signal to the height adjusting mechanism, and the height adjusting mechanism drives the die table to lift to adjust the height position of the die table (at the moment, a measuring part of the linear displacement sensor moves along with the movement of the die table, and the real-time position value of the measuring part is the real-time height position value of the die table); simultaneously, the linear displacement sensor converts the position of the measuring component into a direct current analog quantity signal in real time and feeds the direct current analog quantity signal back to the control device, the control device converts the received direct current analog quantity signal into a corresponding analog quantity input real-time variable value, then converts the analog quantity input real-time variable value, the maximum value of the analog quantity input variable value and the range of the linear displacement sensor into a ratio to obtain a real-time position value of the measuring component, then subtracts the position value of the measuring component determined as the original point from the real-time position value of the measuring component to obtain the actual displacement of the height position of the mold table, compares the actual displacement of the height position of the mold table with the target displacement, and outputs a stop signal to the height adjusting mechanism until the actual displacement of the height position of the mold table is the same as the target displacement, and the height adjusting mechanism stops operating after receiving the stop signal, and stopping adjusting the height position of the die table. Because the linear displacement sensor sends out the analog quantity signal, the position that measuring part is located is where, what is the direct current analog quantity signal value of output, this not only can improve the precision to the high position adjustment of mould platform, and because need not like prior art one combine the speed reduction ratio of reduction gear, drive mechanism's drive ratio (like the drive ratio between each sprocket), and data such as the pitch of guide pillar screw thread section go on a series of conversions, the work load of the in-process data conversion that can significantly reduce, reduce the maintenance cost of procedure, and improved the stability and the reliability of data.

In a preferred embodiment, the linear displacement sensor is a magnetostrictive linear displacement sensor, and a movable magnetic ring of the magnetostrictive linear displacement sensor forms a measuring part of the linear displacement sensor. The magnetostrictive displacement sensor is a displacement sensor which is manufactured according to the magnetostrictive principle and is used for measuring the absolute position with high precision and long stroke; the device adopts an internal non-contact measuring mode, the movable magnetic ring for measurement and the sensor are not in direct contact, so that the movable magnetic ring and the sensor are not rubbed or abraded, the service life is long, the environmental adaptability is strong, the reliability is high, the safety is good, and the system can automatically work conveniently.

In a preferred scheme, the height adjusting mechanism comprises a servo controller, a height adjusting servo motor, a worm and gear lifter, a plurality of first guide pillars and a plurality of first guide sleeves, wherein each first guide pillar is installed on the rack and moves up and down, and each first guide sleeve is arranged on the die table and is respectively sleeved on the corresponding first guide pillar; the height adjusting servo motor and the worm gear lifter are both arranged on the rack, the height adjusting servo motor is in transmission connection with a driving screw rod of the worm gear lifter, and a jacking screw rod of the worm gear lifter is connected with the die table; the input end of the servo controller is connected with the output end of the control device, and the output end of the servo controller is connected with the control input end of the height adjusting servo motor. The control device controls the positive and negative rotation, the rotating speed and the rotating time of the height adjusting servo motor through the servo controller, so that the lifting amplitude of the jacking screw rod of the worm gear lifter is controlled, and the height position of the die table is adjusted.

In another preferred scheme, the automatic detecting and adjusting device for the height position of the die table further comprises a supporting seat and a die table lifting driving mechanism capable of driving the die table to lift, wherein the supporting seat is installed on the rack through the height adjusting mechanism, and the die table lifting driving mechanism is installed on the supporting seat; the die table lifting driving mechanism is electrically connected with the corresponding output end of the control device. When the device works, the control device controls the die table lifting driving mechanism to move the die table to a position for die assembly, and then the position of the measuring part is determined as the original position.

In a more preferable scheme, the height adjusting mechanism comprises a servo controller, a height adjusting servo motor, a worm and gear lifter, a plurality of first guide pillars and a plurality of first guide sleeves, wherein each first guide pillar is installed on the rack and moves up and down, and each first guide sleeve is arranged on the supporting seat and is respectively sleeved on the corresponding first guide pillar; the height adjusting servo motor and the worm gear lifter are both arranged on the rack, the height adjusting servo motor is in transmission connection with a driving screw rod of the worm gear lifter, and a jacking screw rod of the worm gear lifter is connected with the supporting seat; the input end of the servo controller is connected with the output end of the control device, and the output end of the servo controller is connected with the control input end of the height adjusting servo motor. The control device controls the positive and negative rotation, the rotating speed and the rotating time of the height adjusting servo motor through the servo controller, so that the lifting amplitude of the jacking screw of the worm gear lifter is controlled, and the height positions of the supporting seat and the die table are adjusted.

In a further more preferred scheme, the die table lifting driving mechanism comprises a plurality of second guide sleeves, a lifting driving motor, a transmission shaft, an eccentric wheel, a rocker arm, a push rod and a third guide sleeve, wherein each second guide sleeve is arranged on the die table and is respectively sleeved on the corresponding first guide pillar; the lifting driving motor is arranged on the rack, and the transmission shaft is rotatably arranged on the rack and is in transmission connection with a power output shaft of the lifting driving motor; the eccentric wheel is arranged on the transmission shaft, the third guide sleeve is arranged on the rack and moves up and down, the push rod is arranged in the third guide sleeve, the first end of the rocker arm is sleeved on the eccentric wheel, the second end of the rocker arm is hinged with the first end of the push rod, and the second end of the push rod is connected with the die table. When the die assembling and disassembling device works, the lifting driving motor drives the transmission shaft and the eccentric wheel on the transmission shaft to rotate, the rocker arm drives the push rod to do vertical linear motion along the third guide sleeve, and then the die table is driven to move vertically to realize die assembling and die disassembling.

In a preferred embodiment, the control device is a PLC controller. Various set parameters (such as target displacement of the height position of the mold table, steering and rotating speed of the height adjusting servo motor and the like) can be input into the PLC through a human-computer interaction interface of the upper computer, and the human-computer interaction interface mutually reads and writes data according to ModbusRTU and ModbusTCP communication protocols integrated by the touch screen and the PLC in a RS232 and Ethernet physical communication mode respectively; the touch screen is provided with a position zero clearing button; in actual operation, when the position zero clearing button is pressed, the position of the measuring part can be determined as the original position.

The utility model discloses a mould platform high position automated inspection adjusting device passes through controlling means output start signal and gives high adjustment mechanism, go up and down through high adjustment mechanism drive mould platform, adjust mould platform high position, while straight line displacement sensor will measure the position that parts place position real-time conversion be direct current analog signal value and feed back to controlling means, by controlling means through calculate the actual displacement volume that reachs mould platform high position and carry out comparison with the target displacement volume, the actual displacement volume that is until mould platform high position is the same with target displacement volume size, then indicate to adjust the target high position with the mould platform, controlling means just stops to export start signal and gives high adjustment mechanism, stop adjusting mould platform high position. Because the linear displacement sensor sends out the analog quantity signal, the position that measuring part is located is where, what is the direct current analog quantity signal value of output, this not only can improve the precision to the high position adjustment of mould platform, and because need not like prior art one combine the speed reduction ratio of reduction gear, drive mechanism's drive ratio (like the drive ratio between each sprocket), and data such as the pitch of guide pillar screw thread section go on a series of conversions, the work load of the in-process data conversion that can significantly reduce, reduce the maintenance cost of procedure, and improved the stability and the reliability of data.

Drawings

Fig. 1 is a schematic structural diagram of a first preferred embodiment of the present invention.

Fig. 2 is a logic block diagram of a first embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a second preferred embodiment of the present invention.

Fig. 4 is a logic block diagram of a second embodiment of the present invention.

Detailed Description

Example one

As shown in fig. 1 and 2, the automatic mold height position detecting and adjusting device of the molding machine comprises a frame 1, a mold 2, a height adjusting mechanism 3 capable of adjusting the height position of the mold 2, a control device 4 and a linear displacement sensor 5, wherein the height adjusting mechanism 3 and the linear displacement sensor 5 are both mounted on the frame 1, the linear displacement sensor 5 is positioned at one side of the mold 2, and a measuring part 51 of the linear displacement sensor 5 is connected with the mold 2; the linear displacement sensor 5 is electrically connected with the corresponding input end of the control device 4, and the height adjusting mechanism 3 is electrically connected with the corresponding output end of the control device 4.

In the present embodiment, the linear displacement sensor 5 is a magnetostrictive linear displacement sensor, and the movable magnetic ring of the magnetostrictive linear displacement sensor constitutes the measuring part 51 of the linear displacement sensor 5.

In this embodiment, the height adjusting mechanism 3 includes a servo controller 31, a height adjusting servo motor 32, a worm gear lifter 33, a plurality of first guide pillars 34 and a plurality of first guide sleeves 35, each first guide pillar 34 is installed on the frame 1 and moves up and down, each first guide sleeve 35 is installed on the die table 2 and is respectively sleeved on the corresponding first guide pillar 34; the height adjusting servo motor 32 and the worm gear lifter 33 are both arranged on the frame 1, the height adjusting servo motor 32 is in transmission connection with a driving screw of the worm gear lifter 33, and a jacking screw 331 of the worm gear lifter 33 is connected with the die table 2; the input of the servo controller 31 is connected to the output of the control device 4, and the output of the servo controller 31 is connected to the control input of the height adjustment servo motor 32. The control device 4 controls the positive and negative rotation, the rotating speed and the rotating time of the height adjusting servo motor 32 through the servo controller 31, thereby controlling the lifting amplitude of the lifting screw 331 of the worm gear lifter 33 and adjusting the height position of the die table 2.

In the present embodiment, the control device 4 is a PLC controller. Various set parameters (such as target displacement of the height position of the model platform 2, steering and rotating speed of the height adjusting servo motor 32 and the like) can be input into the PLC through a human-computer interaction interface of the upper computer, and the human-computer interaction interface mutually reads and writes data according to ModbusRTU and ModbusTCP communication protocols integrated by the touch screen and the PLC in a RS232 and Ethernet physical communication mode respectively; the touch screen is provided with a position zero clearing button; in actual operation, when the "position clear" button is pressed, the position where the measuring part 51 is located can be determined as the origin position.

The working principle of the automatic detecting and adjusting device for the height and the position of the mold table is briefly described as follows:

during operation, the position of the measuring part 51 of the linear displacement sensor 5 is determined as the original position, and the target displacement amount of the height position of the die table 2 to be adjusted is determined according to the process requirement; then the control device 4 outputs a starting signal to the height adjusting mechanism 3, and the height position of the die table 2 is adjusted by driving the die table 2 to lift through the height adjusting mechanism 3 (at this time, the measuring part 51 of the linear displacement sensor 5 moves along with the movement of the die table 2, and the real-time position value of the measuring part 51 is the real-time height position value of the die table 2); meanwhile, the linear displacement sensor 5 converts the position of the measuring component 51 into a direct current analog quantity signal in real time and feeds the direct current analog quantity signal back to the control device 4, the control device 4 converts the received direct current analog quantity signal into a corresponding analog quantity input real-time variable value, then the analog quantity input real-time variable value, the maximum value of the analog quantity input variable value and the range of the linear displacement sensor 5 are subjected to proportional conversion to obtain the real-time position value of the measuring component 51, then the real-time position value of the measuring component 51 is subtracted from the position value of the measuring component 51 determined as the origin point to obtain the actual displacement of the height position of the mold table 2, and the actual displacement of the height position of the mold table 2 is compared with the target displacement until the actual displacement of the height position of the mold table 2 is the same as the target displacement, and the control device 4 outputs a stop signal to the height adjusting, the height adjusting mechanism 3 stops operating upon receiving the stop signal, and stops adjusting the height position of the die table 2.

Example two

Referring to fig. 3 and 4, in the case that the other parts are the same as the first embodiment, the difference is that: the automatic die table height position detection and adjustment device further comprises a supporting seat 7 and a die table lifting driving mechanism 8 capable of driving the die table 2 to lift, the supporting seat 7 is installed on the rack 1 through the height adjustment mechanism 3, and the die table lifting driving mechanism 8 is installed on the supporting seat 7; the mould platform lifting driving mechanism 8 is electrically connected with the corresponding output end of the control device 4. When the mold clamping device works, the control device 4 controls the mold table lifting driving mechanism 8 to move the mold table 2 to a mold clamping position, and then the position of the measuring component 51 is determined as an original position.

In this embodiment, the height adjusting mechanism 3 ' includes a servo controller 31 ', a height adjusting servo motor 32 ', a worm and gear lifter 33 ', a plurality of first guide pillars 34 ' and a plurality of first guide sleeves 35 ', each first guide pillar 34 ' is installed on the frame 1 and moves up and down, each first guide sleeve 35 ' is installed on the support base 7 and is respectively sleeved on the corresponding first guide pillar 34 '; the height adjusting servo motor 32 'and the worm gear lifter 33' are both arranged on the rack 1, the height adjusting servo motor 32 'is in transmission connection with a driving screw rod of the worm gear lifter 33', and a jacking screw rod 331 'of the worm gear lifter 33' is connected with the supporting seat 7; the input of the servo-controller 31 ' is connected to the output of the control device 4, and the output of the servo-controller 31 ' is connected to the control input of the height-adjustment servo-motor 32 '. The control device 4 controls the positive and negative rotation, the rotating speed and the rotating time of the height adjusting servo motor 32 'through the servo controller 31', thereby controlling the lifting amplitude of the jacking screw 331 'of the worm gear lifter 33', and further adjusting the height positions of the supporting seat 7 and the die table 2.

In this embodiment, the mold lifting driving mechanism 8 includes a plurality of second guide sleeves 81, a lifting driving motor 82, a transmission shaft 83, an eccentric wheel 84, a rocker arm 85, a push rod 86 and a third guide sleeve 87, and each of the second guide sleeves 81 is disposed on the mold 2 and respectively sleeved on the corresponding first guide posts 34'; the lifting driving motor 82 is arranged on the frame 1, and the transmission shaft 83 is rotatably arranged on the frame 1 and is in transmission connection with a power output shaft of the lifting driving motor 82; the eccentric wheel 84 is arranged on the transmission shaft 83, the third guide sleeve 87 is arranged on the machine frame 1 and moves up and down, the push rod 86 is positioned in the third guide sleeve 87, the first end of the rocker arm 85 is sleeved on the eccentric wheel 84, the second end of the rocker arm 85 is hinged with the first end of the push rod 86, and the second end of the push rod 86 is connected with the die table 2. During operation, the lifting driving motor 82 drives the transmission shaft 83 and the eccentric wheel 84 thereon to rotate, and the rocker 85 drives the push rod 86 to move linearly up and down along the third guide sleeve 87, so as to drive the mold table 2 to move up and down to realize mold closing and opening.

In addition, it should be noted that the names of the parts and the like of the embodiments described in the present specification may be different, and all the equivalent or simple changes made according to the structure, the features and the principle of the present invention are included in the protection scope of the present invention. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides a mould platform high position automated inspection adjusting device of make-up machine, includes frame, mould platform and can carry out the height control mechanism who adjusts to the high position of mould platform, and height control mechanism installs in the frame its characterized in that: the automatic detection and adjustment device for the height position of the die table further comprises a control device and a linear displacement sensor, the linear displacement sensor is mounted on the rack and positioned on one side of the die table, and a measuring part of the linear displacement sensor is connected with the die table; the linear displacement sensor is electrically connected with the corresponding input end of the control device, and the height adjusting mechanism is electrically connected with the corresponding output end of the control device.

2. The automatic detecting and adjusting device for the height and position of the mold table of the molding machine according to claim 1, wherein: the linear displacement sensor is a magnetostrictive linear displacement sensor, and a movable magnetic ring of the magnetostrictive linear displacement sensor forms a measuring part of the linear displacement sensor.

3. The automatic detecting and adjusting device for the height and position of the mold table of the molding machine according to claim 1, wherein: the control device is a PLC controller.

4. The automatic mold table height position detecting and adjusting device of a molding machine according to any one of claims 1 to 3, characterized in that: the height adjusting mechanism comprises a servo controller, a height adjusting servo motor, a worm and gear lifter, a plurality of first guide pillars and a plurality of first guide sleeves, each first guide pillar is installed on the rack and moves up and down, and each first guide sleeve is arranged on the die table and is respectively sleeved on the corresponding first guide pillar; the height adjusting servo motor and the worm gear lifter are both arranged on the rack, the height adjusting servo motor is in transmission connection with a driving screw rod of the worm gear lifter, and a jacking screw rod of the worm gear lifter is connected with the die table; the input end of the servo controller is connected with the output end of the control device, and the output end of the servo controller is connected with the control input end of the height adjusting servo motor.

5. The automatic mold table height position detecting and adjusting device of a molding machine according to any one of claims 1 to 3, characterized in that: the automatic die table height position detection and adjustment device also comprises a supporting seat and a die table lifting driving mechanism capable of driving the die table to lift, wherein the supporting seat is installed on the rack through the height adjustment mechanism, and the die table lifting driving mechanism is installed on the supporting seat; the die table lifting driving mechanism is electrically connected with the corresponding output end of the control device.

6. The automatic detecting and adjusting device for the height and position of the mold table of the molding machine according to claim 5, wherein: the height adjusting mechanism comprises a servo controller, a height adjusting servo motor, a worm and gear lifter, a plurality of first guide pillars and a plurality of first guide sleeves, each first guide pillar is installed on the rack and moves up and down, and each first guide sleeve is arranged on the supporting seat and is respectively sleeved on the corresponding first guide pillar; the height adjusting servo motor and the worm gear lifter are both arranged on the rack, the height adjusting servo motor is in transmission connection with a driving screw rod of the worm gear lifter, and a jacking screw rod of the worm gear lifter is connected with the supporting seat; the input end of the servo controller is connected with the output end of the control device, and the output end of the servo controller is connected with the control input end of the height adjusting servo motor.

7. The automatic detecting and adjusting device for the height and position of the mold table of the molding machine according to claim 6, wherein: the die table lifting driving mechanism comprises a plurality of second guide sleeves, a lifting driving motor, a transmission shaft, an eccentric wheel, a rocker arm, a push rod and a third guide sleeve, and each second guide sleeve is arranged on the die table and is respectively sleeved on the corresponding first guide pillar; the lifting driving motor is arranged on the rack, and the transmission shaft is rotatably arranged on the rack and is in transmission connection with a power output shaft of the lifting driving motor; the eccentric wheel is arranged on the transmission shaft, the third guide sleeve is arranged on the rack and moves up and down, the push rod is arranged in the third guide sleeve, the first end of the rocker arm is sleeved on the eccentric wheel, the second end of the rocker arm is hinged with the first end of the push rod, and the second end of the push rod is connected with the die table.