CN109708577B - Automatic resetting and calibrating device for forming equipment of pulp molding product - Google Patents
Automatic resetting and calibrating device for forming equipment of pulp molding product Download PDFInfo
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- CN109708577B CN109708577B CN201910009591.1A CN201910009591A CN109708577B CN 109708577 B CN109708577 B CN 109708577B CN 201910009591 A CN201910009591 A CN 201910009591A CN 109708577 B CN109708577 B CN 109708577B
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Abstract
The invention discloses an automatic resetting and calibrating device for forming equipment of a paper pulp molding product, which comprises a forming machine and a grating ruler body, wherein the forming machine comprises a machine tool body, the top of the machine tool body is provided with a first station, a second station and a third station, a reciprocating workbench is movably arranged on the first station, the second station and the third station, driving mechanisms are arranged on the front side and the rear side of the reciprocating workbench, and the grating ruler body comprises a scale grating and a grating reading head. The invention completes the signal induction of the device, the feedback control system, the program calculation compensation, the transmission of instructions to the servo motor, the driving of the screw rod to compensate the deviant, the realization of the positioning and setting precision value of the workbench, the higher precision value of the device, and the good service life cycle of the die jig on the matched device.
Description
Technical Field
The invention relates to the technical field of paper pulp molding, in particular to an automatic resetting and calibrating device for a paper pulp molding product forming device.
Background
The existing pulp molding equipment is divided into three stations, a first station, a second station and a third station, which respectively correspond to the pulp sucking mechanism, the hot pressing mechanism and the transferring mechanism, and the movement track is expressed by numerical values in sequence as follows: and (4) driving the reciprocating workbench to reciprocate on three stations by a screw rod respectively to prepare a finished product, wherein the zero position of the reciprocating workbench is 1230 and the zero position of the reciprocating workbench is 2110 and the zero position of the reciprocating workbench is reset.
The motion precision of the reciprocating workbench completely depends on the precision of a servo motor, a machine tool screw rod, a slide rail and a related connecting piece, and after the parts reach a certain abrasion value, the motion displacement precision randomly begins to decline, namely the precision value is from the initial +/-0.02 to the worn +/-0.10, so that the motion deviation of the workbench generates a lateral pressure on a die guide part and a die body on equipment, the abrasion of the die guide part is accelerated, and the service life of the die is influenced and shortened.
The original equipment fabrication is divided into three stages: the introduction stage, the improvement stage and the maturation stage are late in the beginning of the molding equipment manufacturing industry, are still in the improvement stage at present, and are not a few manufacturers who really have the capability of manufacturing in China.
Compared with machine tools in the field of synchronous processing and manufacturing, the precision maintenance, stability, part maintenance and service life of the molding equipment have long gaps.
The equipment itself is still in the break-in period, such as the equipment control system, the power source part, the power transmission part and the equipment body, the moving part and the lubrication have more defects in design.
Therefore, it is necessary to invent an automatic resetting and calibrating device for a pulp molding product forming device to solve the above problems.
Disclosure of Invention
The invention aims to provide an automatic resetting and calibrating device for forming equipment of a paper pulp molding product, which is characterized in that the technical grafting of a grating ruler is assisted on the basis of the precision of the existing machine equipment, the device is controlled by a program, the signal induction, the feedback control system and the program calculation compensation are completed, the instruction is transmitted to a servo motor to drive a screw rod to compensate an offset value, the positioning setting precision value of a workbench is realized, the equipment per se obtains a higher precision value, and a mold jig on the equipment is matched to achieve a good service life cycle so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a former automatic re-setting calibrating device of paper pulp molding product, includes make-up machine and grating ruler body, the make-up machine includes the lathe bed, lathe bed top is equipped with first station, second station and third station, the activity sets up a reciprocating table on first station, second station and the third station, both sides are equipped with actuating mechanism around the reciprocating table, the grating ruler body includes scale grating and grating reading head, grating reading head includes light source, lens, photoelectricity original paper and instruction grating, the scale grating sets up in lathe bed top one side, grating reading head sets up in reciprocating table top one side.
Preferably, first station, second station and third station set gradually from right to left, be equipped with the thick liquid mechanism of inhaling that is used for absorbing paper pulp on the first station, be equipped with the hot press mechanism that is used for hot briquetting on the second station, be equipped with the transfer mechanism that is used for shifting the finished product on the third station.
Preferably, the driving mechanism comprises a screw rod and a servo motor, the screw rod is in transmission connection with the servo motor, two ends of the screw rod are fixedly connected with the machine tool body through bearings, a sliding block is sleeved outside the screw rod, an inner thread matched with the outer wall of the screw rod is arranged on the inner wall of the sliding block, and the reciprocating workbench is fixedly connected with the sliding block.
Preferably, actuating mechanism connects outside PLC controller, the photoelectricity original paper output is equipped with drive circuit, drive circuit and outside PLC controller electric connection, servo motor and outside PLC controller electric connection.
Preferably, a first mounting plate is fixedly arranged on one side of the top of the machine tool body, the scale grating is fixedly connected with the machine tool body through the first mounting plate, the length of the scale grating is the same as that of the machine tool body, and the indication grating and the scale grating are arranged in parallel.
Preferably, a second mounting plate is fixedly arranged on the front side of the grating reading head, and the grating reading head is fixedly connected with the reciprocating workbench through the second mounting plate.
Preferably, the bottoms of the reciprocating workbench and the grating reading head are respectively provided with a sliding foot, a sliding rail is arranged on the machine tool body corresponding to the sliding foot, and a sealing strip is arranged on the inner wall of the sliding rail.
The invention also provides a use method of the automatic resetting and calibrating device of the forming equipment of the pulp molding product, which comprises the following specific operation steps:
firstly, fixedly installing a scale grating on one side of the top of a machine tool body, fixedly installing a grating reading head on one side of the top of a reciprocating workbench, and keeping the scale grating and the grating reading head in parallel arrangement;
secondly, the grating ruler body is used, in the using process, the grating ruler body is monitored in real time, the linear displacement and the moving speed of the reciprocating workbench are detected, a detection signal is sent to an external PLC (programmable logic controller) through a driving circuit, and the external PLC controls a servo motor, so that the position of the reciprocating workbench is accurately positioned, and accurate processing is realized;
step three, after using for a period of time, after servo motor, lead screw, slide rail and relevant link member reach certain abrasion value, the precision of walking to move and begin to decline at random, namely the precision value is from the first +/-0.02 to +/-0.10 after wearing and tearing, the movement deviation of the work station produces a lateral pressure to mould guide position and body on the apparatus at this moment, accelerate the wearing and tearing of the mould guide part, thus influence and shorten the service life of the mould, cooperate the external PLC controller to carry on the program control at this moment, finish the apparatus from signal induction, the feedback control system, the program calculates the compensation, convey the order to servo motor, thus drive the lead screw and compensate the deviant, realize the location of the work station sets for the precision value, namely the first station: +/-0.015, second station: +/-0.025, third station: +/0.035.
The invention has the technical effects and advantages that:
1. the invention utilizes the technology of grating ruler grafting on the basis of the precision of the existing machine equipment, and is matched with program control to complete the signal induction of the device, feed back a control system, calculate and compensate the program, transmit an instruction to a servo motor, drive a screw rod to compensate an offset value, realize the positioning and setting precision value of a workbench, and enable the equipment to obtain a higher precision value, thereby enabling the die jig on the matched equipment to achieve a good service life cycle;
2. be connected through grating chi and outside PLC controller, the control lead screw drives the motion of reciprocating stage, carries out the skew value compensation, need not artifical adjustment and frequent maintenance and overhaul, and intelligent degree is high, and convenient to use has solved current moulding device precision retention poor, poor stability, and the part needs frequent maintenance, problem that life is short.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic structural diagram of a grating scale body according to the present invention.
Fig. 3 is a schematic structural view of the molding machine of the present invention.
FIG. 4 is a schematic diagram of a moire structure of the present invention.
Fig. 5 is a graph showing the relationship between the moire pitch W, the grating pitch ω, and the tilt angle θ according to the present invention.
In the figure: the automatic control system comprises a forming machine 1, a machine tool body 11, a first station 12, a second station 13, a third station 14, a reciprocating workbench 15, a 2-grating ruler body, a scale grating 21, a grating reading head 22, a 221 light source, a 222 lens, a 223 photoelectric element, an indication grating 224, a 225 driving circuit, a 3 driving mechanism, a 31 screw rod, a 32 servo motor, a first mounting plate 4, a second mounting plate 5, a sliding foot 6, a sliding rail 7 and a sealing strip 8.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
according to the automatic resetting and calibrating device for the forming equipment of the pulp molding product shown in fig. 1-3, the automatic resetting and calibrating device comprises a forming machine 1 and a grating ruler body 2, the forming machine 1 comprises a machine tool body 11, a first station 12, a second station 13 and a third station 14 are arranged at the top of the machine tool body 11, the first station 12, the second station 13 and the third station 14 are sequentially arranged from right to left, a pulp sucking mechanism for sucking pulp is arranged on the first station 12, a hot pressing mechanism for hot pressing is arranged on the second station 13, a transfer mechanism for transferring finished products is arranged on the third station 14, a reciprocating workbench 15 is movably arranged on the first station 12, the second station 13 and the third station 14, driving mechanisms 3 are arranged on the front side and the rear side of the reciprocating workbench 15, the grating ruler body 2 comprises a scale grating 21 and a grating reading head 22, the grating reading head 22 comprises a light source 221, a lens 222, a photoelectric element 223 and an indication grating 224, the scale grating 21 is arranged on one side of the top of the machine tool body 11, and the grating reading head 22 is arranged on one side of the top of the reciprocating workbench 15.
The technical grafting of the grating ruler is assisted on the basis of the precision of the existing machine equipment, the device is controlled by a program, the device is induced by a signal, a feedback control system and a program are calculated and compensated, an instruction is transmitted to a servo motor 32, a lead screw 31 is driven to compensate an offset value, the positioning and setting precision value of the reciprocating workbench 15 is realized, the equipment can obtain a higher precision value, and therefore the die jig on the matched equipment can achieve a good service life cycle.
Example 2:
according to the automatic resetting and calibrating device for the forming equipment of the paper pulp molding product shown in the figure 1, the driving mechanism 3 comprises a screw rod 31 and a servo motor 32, the screw rod 31 is in transmission connection with the servo motor 32, two ends of the screw rod 31 are fixedly connected with a machine tool body 11 through bearings, a sliding block is sleeved outside the screw rod 31, inner threads matched with the outer wall of the screw rod 31 are arranged on the inner wall of the sliding block, and the reciprocating workbench 15 is fixedly connected with the sliding block;
a first mounting plate 4 is fixedly arranged on one side of the top of the machine tool body 11, the scale grating 21 is fixedly connected with the machine tool body 11 through the first mounting plate 4, the scale grating 21 is the same as the machine tool body 11 in length, the indication grating 224 is arranged in parallel with the scale grating 21, a second mounting plate 5 is fixedly arranged on the front side of the grating reading head 22, the grating reading head 22 is fixedly connected with the reciprocating workbench 15 through the second mounting plate 5, sliding feet 6 are arranged at the bottoms of the reciprocating workbench 15 and the grating reading head 22, a sliding rail 7 is arranged on the machine tool body 11 corresponding to the sliding feet 6, and sealing strips 8 are arranged on the inner wall of the sliding rail 7, so that the abrasion between the sliding feet 6 and the sliding rail 7 is reduced;
Example 3:
the invention also provides a use method of the automatic resetting and calibrating device of the forming equipment of the pulp molding product, which comprises the following specific operation steps:
firstly, fixedly installing a scale grating 21 on one side of the top of a machine tool body 11, fixedly installing a grating reading head 22 on one side of the top of a reciprocating workbench 15, and keeping the scale grating 21 and the grating reading head 22 in parallel arrangement;
step two, starting to use, wherein in the using process, the grating ruler body 2 carries out real-time monitoring, detects the linear displacement and the moving speed of the reciprocating workbench 15, sends a detection signal to an external PLC (programmable logic controller) through a driving circuit 225, and the external PLC controls the servo motor 32, so that the position of the reciprocating workbench 15 is accurately positioned, and accurate processing is realized;
step three, after using for a period of time, after servo motor 32, lead screw 31, slide rail 7 and relevant link member reach certain abrasion value, move and walk the precision and begin to decline at random, namely the precision value is from the first +/-0.02 to +/-0.10 after wearing and tearing, the motion deviation of the work station produces a lateral pressure to mould guide position and body on the apparatus at this moment, accelerate the wearing and tearing of the mould guide part, thus influence and shorten the service life of the mould, cooperate with external PLC controller to carry on the program control at this moment, finish the apparatus from signal induction, feedback control system, the program calculates the compensation, convey the order to servo motor 32, thus drive the lead screw 31 to compensate the deviant, realize the location of the work station sets for the precision value, namely the first station 12: +/-0.015, second station 13: +/-0.025, third station 14: +/0.035.
Example 4:
in the specific operation steps of embodiment 3, the measurement principle of the grating ruler is as follows:
during measurement, the long and short optical fiber ruler surfaces of the scale grating 21 and the indication grating 224 are overlapped in parallel with each other, a gap of 0.01 to 0.1 is kept, the indication grating 224 rotates a tiny angle theta in a plane of the indication grating relative to the scale grating 21, when light rays irradiate the gratings in parallel, due to the transmission and diffraction effects of light, stripes with equal intervals of light and shade alternation, namely Moire stripes, can appear in a direction perpendicular to a bisector of an included angle theta of the two grating lines, as shown in FIG. 4;
due to the interference effect of light, the scribed lines of the two gratings are overlapped near the line a of the intersection point, the light-transmitting slits on the gratings are not shielded, the light transmission is strongest, and a bright band is formed; near the line b, the light-tight part of one grating just covers the light-transmitting gap of the other grating, and the light transmission is the worst to form a dark band; the distance W between two adjacent light or dark bands is called the moire pitch, and fig. 5 shows the relationship between the moire pitch W and the grating pitch ω and the inclination angle θ,
wherein
Thus, it is possible to provide
Since theta is small, when theta is in rad,
therefore, it is
The moving distance of the moire fringes is proportional to the moving distance of the grating, the grating moves transversely by one pitch, the moire fringes just move up and down by one pitch omega along the reticle, or at a certain position on the grating reticle, such as the position of the line a in fig. 4, the moire fringes change by one period of light-dark-light, which provides good conditions for the installation of the photoelectric element and the signal detection;
in addition, the moving direction of the grating and the moving direction of the moire fringes have a fixed relationship, for example, when the indication grating 224 rotates by a small angle + θ counterclockwise with respect to the scale grating 21, the moire fringes move downward (upward) when the scale grating 21 moves rightward (left); conversely, the indication grating 224 rotates clockwise by a small angle- θ, and when the scale grating 21 moves right (left), the moire fringes move up (down); the direction of movement of the grating can be discerned from the direction of movement of the moire fringes.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (5)
1. The utility model provides a former automatic re-setting calibrating device of paper pulp molding product, includes make-up machine (1) and grating chi body (2), its characterized in that: the forming machine (1) comprises a machine tool body (11), a first station (12), a second station (13) and a third station (14) are arranged at the top of the machine tool body (11), a reciprocating workbench (15) is movably arranged on the first station (12), the second station (13) and the third station (14), driving mechanisms (3) are arranged on the front side and the rear side of the reciprocating workbench (15), the grating ruler body (2) comprises a scale grating (21) and a grating reading head (22), the grating reading head (22) comprises a light source (221), a lens (222), a photoelectric element (223) and an indication grating (224), the scale grating (21) is arranged on one side of the top of the machine tool body (11), and the grating reading head (22) is arranged on one side of the top of the reciprocating workbench (15); the driving mechanism (3) comprises a screw rod (31) and a servo motor (32), the screw rod (31) is in transmission connection with the servo motor (32), two ends of the screw rod (31) are fixedly connected with the machine tool body (11) through bearings, a sliding block is sleeved outside the screw rod (31), inner threads matched with the outer wall of the screw rod (31) are arranged on the inner wall of the sliding block, and the reciprocating workbench (15) is fixedly connected with the sliding block; a first mounting plate (4) is fixedly arranged on one side of the top of the machine tool body (11), the scale grating (21) is fixedly connected with the machine tool body (11) through the first mounting plate (4), the scale grating (21) is the same as the machine tool body (11) in length, and the indication grating (224) and the scale grating (21) are arranged in parallel; a second mounting plate (5) is fixedly arranged on the front side of the grating reading head (22), and the grating reading head (22) is fixedly connected with the reciprocating workbench (15) through the second mounting plate (5); through the technical grafting of assisting the grating chi on the benchmark of current board equipment precision, cooperation program control accomplishes the device from signal induction, feedback control system, program calculation compensation, conveys instruction to servo motor (32), drives lead screw (31) compensation deviant, realizes that the location of workstation sets for the precision value, first station (12) promptly: +/-0.015, second station (13): +/-0.025, third station (14): +/-0.035.
2. The automatic resetting and calibrating device for the pulp molded product forming equipment according to claim 1, characterized in that: first station (12), second station (13) and third station (14) set gradually from right to left, be equipped with the thick liquid mechanism of inhaling that is used for absorbing paper pulp on first station (12), be equipped with the hot press structure who is used for hot briquetting on second station (13), be equipped with on third station (14) and be used for shifting off-the-shelf transfer mechanism.
3. The automatic resetting and calibrating device for the pulp molded product forming equipment according to claim 1, characterized in that: outside PLC controller is connected in actuating mechanism (3), photoelectricity original paper (223) output is equipped with drive circuit (225), drive circuit (225) and outside PLC controller electric connection, servo motor (32) and outside PLC controller electric connection.
4. The automatic resetting and calibrating device for the pulp molded product forming equipment according to claim 1, characterized in that: the reciprocating workbench (15) and the grating reading head (22) are respectively provided with a sliding foot (6), a sliding rail (7) is arranged on a machine tool body (11) corresponding to the sliding foot (6), and a sealing strip (8) is arranged on the inner wall of the sliding rail (7).
5. The use method of an automatic resetting and calibrating device for a pulp molded product forming apparatus according to any one of claims 1 to 4, characterized in that: the specific operation steps are as follows:
firstly, fixedly installing a scale grating (21) on one side of the top of a machine tool body (11), fixedly installing a grating reading head (22) on one side of the top of a reciprocating workbench (15), and keeping the scale grating (21) and the grating reading head (22) in parallel;
step two, starting to use, wherein in the using process, the grating ruler body (2) carries out real-time monitoring, detects the linear displacement and the moving speed of the reciprocating workbench (15), sends a detection signal to an external PLC (programmable logic controller) through a driving circuit (225), and the external PLC controls a servo motor (32), so that the position of the reciprocating workbench (15) is accurately positioned, and accurate processing is realized;
step three, after using for a period of time, after the servo motor (32), the screw rod (31), the slide rail (7) and the related connecting piece reach a certain abrasion value, the movement deviation precision randomly begins to decline, namely the precision value is from the initial +/-0.02 to the +/-0.10 after abrasion, the movement deviation of the workbench generates a lateral pressure to the die guide part and the body on the equipment at the moment, the abrasion of the die guide part is accelerated, thereby the service life of the die is influenced and shortened, the device is matched with an external PLC to carry out program control at the moment, the signal induction, the feedback control system and the program calculation compensation are completed, and an instruction is transmitted to the servo motor (32), so that the screw rod (31) is driven to compensate the deviation value, and the positioning setting precision value of the workbench, namely the first station (12), is realized: +/-0.015, second station (13): +/-0.025, third station (14): +/-0.035.
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