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CN-122008511-A - Method, device, equipment and medium for adjusting mold closing motion straight progress of injection molding machine

CN122008511ACN 122008511 ACN122008511 ACN 122008511ACN-122008511-A

Abstract

The invention discloses a method, a device, equipment and a medium for adjusting the straight progress of mold closing movement of an injection molding machine, which comprise the following steps: and establishing a design reference side on the injection molding machine frame, and finishing horizontal calibration of the guide rail mounting surface, so that the parallelism is corrected through an external standard reference ruler and a displacement detector after the reference linear guide rail is attached to the positioning pin. And installing the first template, driving the displacement detector to detect the measuring surface of the square by utilizing the movement of the second template, and adjusting the installation posture of the first template according to the detection result. Detecting the relative position deviation between the second template and the first template, and adjusting the installation position of the second template to ensure that the parallelism between the second template and the first template meets the requirement. And detecting the stress states of the plurality of guide posts and adjusting the fastening component to realize stress balance. The invention improves the motion straightness and structural stability of the mold closing mechanism through unified reference, quantitative calibration and stress adjustment, and ensures that the injection molding machine meets the requirement of high-precision molding.

Inventors

  • XUE HAILONG
  • CHEN SHANGYE
  • JIA XIUFENG

Assignees

  • 广东伊之密精密注压科技有限公司

Dates

Publication Date
20260512
Application Date
20251224

Claims (10)

  1. 1. The method for adjusting the straight progress of the die closing motion of the injection molding machine is characterized by comprising the following steps of: Confirming that a positioning pin, the mounting position of a reference linear guide rail and the reference side surface of the reference linear guide rail are positioned on the same side surface on a frame of an injection molding machine, and determining the same side surface as a design reference side; detecting the horizontal state of the guide rail mounting surface of the injection molding machine frame by using a horizontal detection instrument, and adjusting the height of the supporting part at the bottom of the injection molding machine frame according to the detection result until the levelness of the injection molding machine frame meets the requirement; On an injection molding machine frame with the levelness meeting the requirement, the reference side surface of the reference linear guide rail is abutted against the positioning pin on the design reference side, the parallelism of the reference linear guide rail is corrected by taking an external standard reference ruler as a reference in a mode that a displacement detector is mounted on a sliding block mounted on the reference linear guide rail, and the corrected reference linear guide rail is fixed; The first template is aligned with the positioning pin and is installed on the injection molding machine frame, a square measuring surface fixed on the first template is used as a reference for detecting verticality, a second template is utilized to drive a displacement detector to detect the square measuring surface along the motion track of the fixed reference linear guide rail, and the installation posture of the first template is adjusted according to detection data until the verticality of the first template and the motion direction meets the requirement; Detecting the relative position deviation between the second template and the first template, and adjusting the installation position of the second template until the parallelism between the second template and the first template meets the requirement; detecting stress states of a plurality of guide posts penetrating through the first template and the second template, and adjusting fastening components on the plurality of guide posts according to stress deviation until the stress of the plurality of guide posts is balanced.
  2. 2. The method of adjusting the degree of straightness of a mold closing motion of an injection molding machine according to claim 1, wherein the step of confirming that the positioning pin, the mounting position of the reference linear guide rail, and the reference side of the reference linear guide rail are located on the same side and determining the same side as a design reference side comprises: cleaning and checking the appearance of a guide rail installation area of an injection molding machine frame, and identifying a vertical machining surface which is precisely machined on the injection molding machine frame and used for limiting lateral freedom; checking structural characteristics near the vertical machining surface, and confirming that a plurality of positioning holes for installing the positioning pins are all distributed along the axial straight line of the installation position of the reference linear guide rail; checking physical characteristics of the datum line guide rail to be installed, detecting surface quality and deviation of two side surfaces of the datum line guide rail, identifying the side surface of which the flatness or surface roughness parameters meet a preset datum level tolerance threshold as a datum side surface of the datum line guide rail, and planning the direction of the datum side surface of the datum line guide rail during installation; And verifying the space layout, namely ensuring that in the planned assembly relation, the installation positions of the positioning pins, the reference linear guide rail and the reference side surface of the reference linear guide rail are all positioned on the same side surface where the vertical machining surface is positioned, and marking or recording the same side surface as a design reference side after confirming that the vertical machining surface is correct.
  3. 3. The method for adjusting the degree of straightness of mold closing movement of an injection molding machine according to claim 1, wherein detecting the level of the guide rail mounting surface of the injection molding machine frame by a level detecting instrument and adjusting the height of the supporting member at the bottom of the injection molding machine frame according to the detection result until the levelness of the injection molding machine frame meets the requirement, comprises: Placing a horizontal detection instrument on a mold locking guide rail mounting surface contained in a guide rail mounting surface of the injection molding machine frame, sequentially moving the horizontal detection instrument from the middle position to the two end positions of the injection molding machine frame, and recording readings of different positions; Adjusting a supporting part at the bottom of the injection molding machine frame according to the reading, and recording the adjusted numerical value; moving the horizontal detecting instrument to a jet-moving guide rail mounting surface contained in the guide rail mounting surface, sequentially moving the horizontal detecting instrument from the middle position to the two end positions of the injection molding machine frame, adjusting the supporting part again according to the readings, and recording the numerical value; repeating the steps of moving detection and adjustment of the supporting parts, and adjusting the heights of the supporting parts until the levelness values of the injection molding machine frame at all detection positions meet the preset levelness standard; and detecting levelness of the injection molding machine frame in the vertical direction through an auxiliary leveling ruler, so that the integral level state of the injection molding machine frame is ensured to accord with the preset levelness standard.
  4. 4. The method for adjusting the degree of parallelism of a mold closing motion of an injection molding machine according to claim 1, wherein the step of abutting a reference side surface of the reference linear guide against a positioning pin on the design reference side in an injection molding machine frame having a desired degree of levelness, correcting the degree of parallelism of the reference linear guide with respect to an external reference ruler by mounting a displacement detector on a slider mounted on the reference linear guide, and fixing the corrected reference linear guide, comprises: Placing the reference linear guide rail on the mounting position of the injection molding machine frame with the levelness meeting the requirement, enabling the reference side surface of the reference linear guide rail to be closely abutted with the positioning pin on the design reference side, and pre-fastening a fixing screw at the corresponding position of the positioning pin; An external standard reference ruler is arranged beside the datum line guide rail in parallel, and the external standard reference ruler and the datum line guide rail are adjusted to keep a parallel distance; mounting a slide block on a guide surface of the reference linear guide rail, fixedly mounting a displacement detector on the slide block, and adjusting the displacement detector to point to a measuring surface of the external standard reference ruler; moving a slider from a first screw position of the reference linear guide, detecting different position readings by using the displacement detector, and calculating the value and the direction of the parallelism deviation by taking the external standard reference ruler as a reference; adjusting the position of the reference linear guide rail according to the direction of the parallelism deviation, and correcting the position of each fixing screw in sequence to ensure that the parallelism is consistent within the full length range of the reference linear guide rail; And sequentially fastening all the fixing screws of the reference linear guide rail by using a torque wrench, and re-detecting the parallelism to confirm that the corrected parallelism of the reference linear guide rail is stable within an allowable range.
  5. 5. The method for adjusting the straightness of mold closing movement of an injection molding machine according to claim 1, wherein a first template is aligned to the positioning pin and is mounted on the injection molding machine frame, a square measuring surface fixed on the first template is used as a reference for detecting perpendicularity, a displacement detector is driven by a movement track of a second template along a fixed reference linear guide rail to detect the square measuring surface, and the mounting posture of the first template is adjusted according to detection data until the perpendicularity of the first template and the movement direction meets the requirement, and the method comprises the following steps: Fixing a square at the middle position of the operation side of a first template, taking a measuring surface of the square as a square measuring surface fixed on the first template, adsorbing a displacement detector at the middle position of the operation side of a second template, and adjusting a probe of the displacement detector to be in contact with the square measuring surface; Controlling the injection molding machine to execute a mold opening action, driving the second template to move for a preset stroke along the movement track of the fixed reference linear guide rail, and recording the reading change of the displacement detector on the square measuring surface; Judging the inclination direction of the first template relative to the vertical plane according to the reading change, if the reading change shows that the first template is forwards inclined towards the shooting table side, knocking the position above the non-code die surface of the first template by using a tool, and if the reading change shows that the first template is inclined towards the second template side, knocking the position below the non-code die surface of the first template by using the tool, so as to adjust the installation posture of the first template; In the verticality detection process, detecting the front-rear direction verticality of the first template in the horizontal direction, if the detection data indicate that deviation exists, correcting the position of the first template base seat by knocking, repeating the detection and adjustment steps until the verticality of the first template in all directions and the motion direction meets the requirements, and fastening the connecting screw of the first template and the injection molding machine frame.
  6. 6. The method for adjusting the degree of straightness of mold closing movement of an injection molding machine according to claim 1, wherein detecting the relative positional deviation between the second mold plate and the first mold plate and adjusting the installation position of the second mold plate until the parallelism between the second mold plate and the first mold plate meets the requirement, comprises: Loosening a fixing screw connected between the second template base and a sliding block fixing beam, wherein the sliding block fixing beam is connected with a sliding block arranged on the fixed reference linear guide rail, so that the second template is in an adjustable state; Detecting relative position deviation values of the second template on an operation side upper end point, an operation side lower end point, a non-operation side upper end point and a non-operation side lower end point relative to the first template by using an inner diameter measuring tool respectively, and recording the relative position deviation values of the four detection points as relative position deviations between the second template and the first template; Analyzing the inclination state of the second template according to the recorded relative position deviation, and knocking the position above the second template, which is close to the side of the first template, by using an adjusting tool when the detected relative position deviation value shows that the upper and lower parallelism is out of tolerance due to the upper and lower magnitude of the detected relative position deviation value so as to correct the installation posture of the second template; When the detected relative position deviation value shows that the upper part is small, the lower part is big, and the upper and lower parallelism is out of tolerance, an adjusting tool is used for knocking the position above the second template, which is far away from the side of the first template, or adjusting an adjusting screw on a base of the second template so as to correct the installation posture of the second template; knocking the side wall of the non-processing surface of the second template by using an adjusting tool when the detected relative position deviation value shows that the parallelism in the front-rear direction is out of tolerance, so as to correct the installation posture of the second template; after the correction of the mounting posture in all directions is completed, the fixing screw is locked again, and the detection step is executed again to recheck the relative position deviation until the parallelism between the second template and the first template is stabilized within the allowable range.
  7. 7. The method of adjusting the straightness of a mold closing motion of an injection molding machine according to claim 1, wherein detecting a stress state of a plurality of guide posts passing through the first mold plate and the second mold plate and adjusting fastening components on the plurality of guide posts according to a stress deviation until the stress balance of the plurality of guide posts comprises: Controlling an injection molding machine to carry out die assembly pressurization, measuring actual stress values of the plurality of guide posts connecting the first template and the second template in a die assembly state by using a die locking force testing instrument, and recording the actual stress values as stress states of the plurality of guide posts; Calculating the average value of all the actual stress values, calculating the difference value of the actual stress value of each guide post relative to the average value, and determining the difference value as stress deviation of the plurality of guide posts; When the stress deviation of the guide post indicates that the guide post is stressed too little and needs to be enlarged, loosening a guide post nut pressing plate screw contained in the fastening component on the guide post, and rotationally locking a guide post nut contained in the fastening component by using a tool so as to shorten the effective stretching length of the guide post; When the stress deviation of the guide post indicates that the guide post is stressed too much and needs to be adjusted down, loosening a guide post nut pressing plate screw contained in the fastening component on the guide post, and reversely rotating and loosening a guide post nut contained in the fastening component by using a tool so as to prolong the effective stretching length of the guide post; After the adjustment is finished, locking a guide post nut pressing plate screw in the fastening assembly, carrying out die assembly pressurization again, measuring the actual stress value, and repeating the calculation and adjustment steps until the stress balance of the guide posts is achieved, so that the stress deviation of all the guide posts is in a preset qualified range.
  8. 8. The utility model provides a straight progress adjusting device of injection molding machine compound die motion which characterized in that, injection molding machine compound die motion straight progress adjusting device includes: the reference side establishing module is used for confirming that the installation positions of the positioning pins and the reference linear guide rail and the reference side surface of the reference linear guide rail are positioned on the same side surface on the injection molding machine frame, and determining the same side surface as a design reference side; The rack level adjusting module is used for detecting the level state of the guide rail mounting surface of the injection molding machine rack by using a level detecting instrument, and adjusting the height of the supporting part at the bottom of the injection molding machine rack according to the detection result until the levelness of the injection molding machine rack meets the requirement; A reference linear guide rail correction module for abutting a reference side surface of the reference linear guide rail with a positioning pin on the design reference side on an injection molding machine frame with a levelness meeting the requirement, correcting the parallelism of the reference linear guide rail by taking an external standard reference ruler as a reference in a manner that a displacement detector is mounted on a sliding block mounted on the reference linear guide rail, and fixing the corrected reference linear guide rail; The first template verticality calibration module is used for installing a first template to the injection molding machine frame in an alignment manner with the positioning pins, taking a square measurement surface fixed on the first template as a reference for verticality detection, utilizing a motion track of a second template along a fixed reference linear guide rail to drive a displacement detector to detect the square measurement surface, and adjusting the installation posture of the first template according to detection data until the verticality of the first template and the motion direction meet the requirement; The second template and first template parallelism calibration module is used for detecting relative position deviation between the second template and the first template and adjusting the installation position of the second template until the parallelism between the second template and the first template meets the requirement; The guide post stress balance adjusting module is used for detecting stress states of a plurality of guide posts penetrating through the first template and the second template, and adjusting fastening components on the plurality of guide posts according to stress deviation until the stress of the plurality of guide posts is balanced.
  9. 9. A computer device comprising a memory, a processor and an injection molding machine closing motion straight progress adjustment program stored on the memory and executable on the processor, the injection molding machine closing motion straight progress adjustment program when executed by the processor implementing the steps of the injection molding machine closing motion straight progress adjustment method of any of claims 1-7.
  10. 10. A computer-readable storage medium, wherein the storage medium has stored thereon an injection molding machine closing motion straight-progress adjustment program, which when executed by a processor, implements the steps of the injection molding machine closing motion straight-progress adjustment method according to any one of claims 1 to 7.

Description

Method, device, equipment and medium for adjusting mold closing motion straight progress of injection molding machine Technical Field The invention relates to the technical field of precision adjustment of injection molding equipment, in particular to a method, a device, equipment and a medium for adjusting the straight progress of mold closing movement of an injection molding machine. Background The high-precision injection molding machine has wide application in the fields of precision optics, biological medicine, automobile electronics, digital electronics, precision gear manufacturing and the like. Parts in the fields generally have the characteristics of small size, complex structure, extremely low tolerance of processing errors and the like, and extremely high requirements on the molding precision, repeated positioning precision and template movement precision of injection molding equipment are provided. In the high-end market in particular, foreign apparatuses are capable of maintaining stable molding consistency in the micrometer-scale accuracy range by virtue of long-term technical accumulation in terms of structural calibration, movement mechanism stability, and template posture control, and thus are dominant for a long time. In the existing domestic injection molding machine equipment, the steps of template installation and calibration generally depend on manual experience, and systematic flow specifications are lacking in reference side establishment, guide rail installation surface levelness evaluation, linear guide rail parallelism adjustment and template posture accurate calibration. Under the scene with higher processing precision requirement, if the reference side is not accurately established, the deviation of the subsequent installation reference is easy to occur, so that the movement direction of the template is deviated from the expected reference. When the levelness of the frame of the injection molding machine is insufficient, the installation base surface of the guide rail can incline, so that the track stability and the positioning consistency of the template during movement along the guide rail are affected. In addition, the parallelism calibration of the linear guide rail still has a large error in the existing production flow, and small parallelism deviation can occur after the guide rail is installed, and the deviation can be continuously amplified along with the increase of the movement stroke of the template, so that the dimensional accuracy of the formed part is affected. In terms of template calibration, the traditional mode often can not detect the perpendicularity of the first template with high precision, and the condition that the template installation posture is not perpendicular to the movement direction easily appears, and then causes uneven die assembly stress, inconsistent product thickness or wall thickness deviation. In addition, the parallelism of the first template and the second template lacks a quantitative detection means in the debugging process of many devices, so that the templates generate relative offset in the motion process, and the molding precision is seriously affected. In the aspect of the guide post structure, a quantitative detection mechanism for the stress state of a plurality of guide posts is generally lacking in the prior art, and the guide posts are easy to generate tiny deformation under the condition of unbalanced stress, so that the movement track of the template is changed. And uneven stress of the guide post can accelerate abrasion of the guide sleeve, reduce the service life of the mold locking structure, and cause obvious influence on a high-precision injection molding scene. Disclosure of Invention The invention mainly aims to provide a method, a device, equipment and a storage medium for adjusting the straight progress of die assembly movement of an injection molding machine, and aims to solve the technical problem that the prior art lacks a systematic adjustment method capable of simultaneously establishing a unified reference, quantifying and calibrating the postures of guide rails and templates and realizing the stress balance of a plurality of guide posts, so that the straight progress of the movement of the die assembly mechanism of the injection molding machine is difficult to reach the stable level required by high-precision application. In order to achieve the above object, the present invention provides a method for adjusting the straight progress of mold closing motion of an injection molding machine, comprising: Confirming that a positioning pin, the mounting position of a reference linear guide rail and the reference side surface of the reference linear guide rail are positioned on the same side surface on a frame of an injection molding machine, and determining the same side surface as a design reference side; detecting the horizontal state of the guide rail mounting surface of the injection molding machine frame by us