Method for correcting flexure deformation of injection molded parts and automatic correction device

Abstract

The application discloses a correction control method and an automatic correction device for flexural deformation of an injection molded part. The control method comprises the following steps: obtaining matched heating parameters according to an input injection molded material to control the heating of a heating tube, slowly lowering a servo cylinder, and obtaining pressure detection values collected by pressure sensors; checking whether the pressure detection values pass the check; if not, controlling the servo cylinder to continue slowly lowering; if yes, updating the number of passes; if the number of passes is greater than a threshold, completing the correction process; if the number of passes is not greater than the threshold, controlling the servo cylinder to stop working and slowly lowering again after a preset interval. The correction control method collects pressure detection values of the injection molded part during correction by pressure sensors and checks the values. According to the checking result, the lowering correction process of the servo cylinder is automatically adjusted, thereby realizing intelligent correction control of the injection molded part and greatly improving the correction efficiency of the injection molded part.

Description

Technical Field

[0001] This invention relates to the field of intelligent control technology, and in particular to a method and automatic correction device for correcting the flexural deformation of injection molded parts. Background Technology

[0002] Due to the influence of product structure and material properties, flexural deformation is one of the most difficult problems to solve in injection molded parts. For injection molded products with assembly requirements or high tolerance requirements, physical correction of flexural deformation is a common method in production. Current techniques typically employ manual methods for physical correction of injection molded parts. However, during manual correction, it is difficult to accurately control the correction pressure, time, and temperature, resulting in inconsistent quality and efficiency. Therefore, existing techniques cannot efficiently correct flexural deformation in injection molded parts. Summary of the Invention

[0003] This invention provides a method and automatic correction device for correcting and controlling the flexural deformation of injection molded parts, aiming to solve the problem that existing methods cannot efficiently correct the flexural deformation of injection molded parts.

[0004] In a first aspect, embodiments of the present invention provide a method for correcting and controlling the flexural deformation of injection molded parts. This control method is applied in the controller of an automatic correction device, wherein the automatic correction device is equipped with at least one servo cylinder, each servo cylinder has multiple pressure heads at its front end, and each servo cylinder has a placement base on its lower side. The controller is communicatively connected to the servo cylinders, pressure sensors on each pressure head, and heating elements in each placement base. The control method includes:

[0005] The heating parameters are obtained according to the input injection molding material to control the heating of the heating element.

[0006] The servo electric cylinder is controlled to slowly press down the injection molded part placed on the base and the pressure detection values ​​collected by each pressure sensor corresponding to the servo electric cylinder are obtained.

[0007] The pressure detection value is verified according to the preset verification rules to obtain a verification result indicating whether it passes or fails.

[0008] If the verification result is a failure, return to the step of controlling the servo electric cylinder to slowly press down and obtaining the pressure detection values ​​collected by each pressure sensor corresponding to the servo electric cylinder;

[0009] If the verification result is passed, update the number of passes and determine whether the updated number of passes is greater than the preset number of passes threshold;

[0010] If the updated number of passes is not greater than the number threshold, the servo cylinder is controlled to stop working and after a preset interval, the process returns to the step of controlling the servo cylinder to slowly press down and obtaining the pressure detection values ​​collected by each pressure sensor corresponding to the servo cylinder.

[0011] If the updated number of passes is greater than the threshold number, the correction process for the injection molded part is completed.

[0012] In a second aspect, embodiments of the present invention also provide an automatic correction device for the flexural deformation of injection molded parts, wherein the controller in the automatic correction device executes the correction control method for the flexural deformation of injection molded parts as described in the first aspect above, and the device includes a machine base, a translation driver disposed on the machine base, a base plate mounted on the translation driver, an electric cylinder bracket disposed on one side of the base plate, and at least one servo electric cylinder mounted on the electric cylinder bracket.

[0013] The translation driver drives the base plate to translate;

[0014] The base plate is provided with at least one placement base, which is located on the lower side of the servo electric cylinder. Each servo electric cylinder is provided with multiple pressure heads at its front end.

[0015] A heating element is installed inside the placement base;

[0016] The controller is fixedly mounted on the machine base and is electrically connected to the servo cylinder, the pressure sensor mounted on each of the pressure heads, and the heating tube mounted in each of the placement bases.

[0017] This invention provides a method and automatic correction device for correcting flexural deformation of injection molded parts. The control method includes: obtaining matching heating parameters based on the input injection molding material and controlling the heating element; controlling a servo cylinder to slowly press down and acquiring pressure detection values ​​collected by various pressure sensors; verifying whether the pressure detection values ​​pass; if they fail, controlling the servo cylinder to continue slowly pressing down; if they pass, updating the number of passes; if the number of passes exceeds a threshold, the correction process is completed; if the number of passes does not exceed the threshold, controlling the servo cylinder to stop working and slowly pressing down again after a preset interval. This correction control method, by acquiring and verifying the pressure detection values ​​during the correction of the injection molded part using pressure sensors, and adjusting the pressing correction process of the servo cylinder based on the verification results, achieves intelligent correction control of the injection molded part, ensuring uniform quality of the injection molded parts after flexural deformation correction, and significantly improving the correction efficiency and quality of the injection molded parts. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a flowchart of the method for correcting and controlling the flexural deformation of injection molded parts in an embodiment of the present invention;

[0020] Figure 2 This is an overall structural diagram of the automatic correction device for flexural deformation of injection molded parts in an embodiment of the present invention;

[0021] Figure 3 This is a partial structural diagram of the automatic correction device for flexural deformation of injection molded parts in an embodiment of the present invention;

[0022] Figure 4 This is another partial structural diagram of the automatic correction device for flexural deformation of injection molded parts in an embodiment of the present invention;

[0023] Figure 5 This is another partial structural diagram of the automatic correction device for flexural deformation of injection molded parts in an embodiment of the present invention;

[0024] Figure 6 This is a structural diagram of the base placement in an embodiment of the present invention;

[0025] Figure 7 This is a structural diagram of the suction cup assembly in an embodiment of the present invention;

[0026] Figure 8 This is a structural diagram of the pressure head in an embodiment of the present invention;

[0027] Figure 9 This is a schematic diagram of the electrical connection structure of the automatic correction device for the flexural deformation of injection molded parts in an embodiment of the present invention;

[0028] Figure 10 A schematic block diagram of a computer device provided for an embodiment of the present invention.

[0029] Reference numerals: 10. Machine base; 11. Controller; 12. Injection molded part; 20. Translation driver; 201. Base plate; 202. Electric cylinder bracket; 203. Servo electric cylinder; 204. Placement base; 50. Pressure head; 510. Pressure sensor; 205. Heating element; 206. Temperature sensor; 21. Translation slide rail; 22. Moving cylinder; 30. Gripping device; 31. Gripping lifting cylinder; 32. Suction cup assembly; 33. Gripping moving cylinder; 34. Connecting plate; 41. Lifting cylinder; 42. Electric cylinder connecting plate; 321. Suction cup; 51. Pressure head fixing sleeve; 52. Pressure head body. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0032] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0033] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0034] Please see Figure 1 , Figure 2 and Figure 9 As shown in the figure, an embodiment of this invention provides a method for correcting the flexural deformation of an injection molded part. This control method is applied to the controller 11 of an automatic correction device. The automatic correction device is equipped with at least one servo cylinder 203, each servo cylinder 203 has multiple pressure heads 50 at its front end, and each servo cylinder 203 has a placement base 204 on its lower side. The controller 11 is communicatively connected to the servo cylinders 203, the pressure sensors 510 on each pressure head 50, and the heating tubes 205 in each placement base 204. The correction control method is executed by application software installed in the controller 11. The controller 11 is the control terminal used to execute the above-mentioned correction control method for the flexural deformation of the injection molded part 12 to correct the injection molded part 12. The controller 11 can be a control terminal with an MCU chip capable of executing application software. Figure 1 As shown, the method includes steps S110 to S170.

[0035] S110. Obtain matching heating parameters based on the input injection molding material to control the heating of the heating element.

[0036] The heating element is controlled by obtaining matching heating parameters based on the input injection molding material. The user can input the injection molding material into the controller, which then matches the material with parameters from a preset heating parameter configuration table. This table contains parameter information corresponding to various material types. The controller retrieves a matching set of parameters from the heating configuration table based on the injection molding material. Heating parameters include rated heating temperature, heating duration, and heating holding temperature. The rated heating temperature is the temperature at which the injection molded part is placed on the base without correction. The heating duration is the duration for which the injection molded part is heated before correction. After heating the injection molded part for a certain duration, correction processing can be performed. The heating holding temperature is the specific temperature at which the injection molded part is held during correction processing. The controller then sends corresponding heating control signals to the heating element based on the heating parameters, thereby controlling the heating element to heat according to the parameters.

[0037] S120. Control the servo electric cylinder to slowly press down the injection molded part placed on the placement base and obtain the pressure detection values ​​collected by each pressure sensor corresponding to the servo electric cylinder.

[0038] The servo cylinder is controlled to slowly press down on the injection molded part placed on the base, and pressure detection values ​​are acquired by each pressure sensor corresponding to the servo cylinder. By controlling the servo cylinder to slowly press down, pressure is applied to the injection molded part during the pressing process, causing deformation and thus correcting the flexural deformation. During the slow pressing process, the pressure detection values ​​acquired by the pressure sensors are acquired in real time, with each pressure sensor acquiring a corresponding pressure detection value.

[0039] S130. Verify the pressure detection value according to the preset verification rules to obtain a verification result indicating whether it passes or fails.

[0040] The pressure detection values ​​are verified according to preset verification rules to obtain a verification result indicating whether they pass or fail. All obtained pressure detection values ​​can be verified according to the verification rules configured in the controller to obtain a verification result indicating whether they pass or fail. If the pressure detection value is determined to meet the verification rules, a passing verification result is obtained; if the pressure detection value is determined to not meet the verification rules, a failing verification result is obtained.

[0041] In a specific embodiment, step S130 specifically includes the following steps: calculating the pressure difference between any two pressure detection values; determining whether each pressure difference is not greater than the verification value in the verification rule, so as to obtain a verification result of whether it passes or fails.

[0042] Specifically, the pressure difference between any two pressure detection values ​​can be calculated, resulting in multiple pressure difference values. For example, if the number of pressure detection values ​​is n, the corresponding pressure difference value is n(n-1) / 2. Further, it is determined whether each obtained pressure difference value is less than or equal to the verification value in the verification rules. If all obtained pressure differences are less than or equal to the verification value, the verification result is considered passed; otherwise, if any single pressure difference value is less than or equal to the verification value, the verification result is considered failed.

[0043] In another specific embodiment, step S130 specifically includes the following steps: obtaining the nearest distance value and the farthest distance value of the pressure head corresponding to each pressure detection value, wherein the nearest distance value is the distance between the pressure head corresponding to the pressure detection value and the nearest neighboring pressure head, and the farthest distance value is the distance between the pressure head corresponding to the pressure detection value and the farthest pressure head; averaging the two pressure differences corresponding to each pressure detection value and the nearest and farthest distance values ​​to obtain the average pressure difference value corresponding to each pressure detection value; and determining whether each average pressure difference value is not greater than the verification value in the verification rule to obtain a verification result indicating whether the verification is passed.

[0044] One pressure detection value corresponds to one pressure head. Alternatively, one can obtain the nearest and farthest distance values ​​between the pressure detection values ​​and the corresponding pressure heads. The nearest distance value is the distance between the pressure head corresponding to the pressure detection value and its nearest neighbor, and the farthest distance value is the distance between the pressure head corresponding to the pressure detection value and its farthest neighbor. Another approach is to obtain a pressure difference value corresponding to the pressure detection value and the nearest distance value. This involves obtaining the pressure detection values ​​of other pressure heads that are closest to the pressure head corresponding to the current pressure detection value, subtracting the current pressure head's pressure detection value from the pressure detection values ​​of other pressure heads with the closest distance value, and taking the absolute value to obtain the corresponding pressure difference value. Similarly, subtracting the current pressure head's pressure detection value from the pressure detection values ​​of other pressure heads with the farthest distance value and taking the absolute value to obtain the corresponding pressure difference value. If there are multiple other pressure heads that are closest to the current pressure head, then the absolute values ​​of the pressure differences between these other pressure heads and the current pressure head are obtained, and then averaged to obtain the corresponding pressure difference. If there are multiple other pressure heads that are furthest from the current pressure head, then the corresponding multiple differences are obtained in the same way, and then averaged to obtain the corresponding pressure difference.

[0045] Furthermore, the average pressure difference between the two pressure measurements corresponding to each pressure measurement is calculated to obtain the average pressure difference for each pressure measurement. Each pressure measurement corresponds to an average pressure difference. It is then determined whether each average pressure difference is less than or equal to the verification value, thus obtaining the verification result. If each average pressure difference is less than or equal to the verification value, the verification is considered successful; if any average pressure difference is greater than the verification value, the verification is considered unsuccessful.

[0046] In another specific embodiment, step S130 specifically includes the following steps: obtaining the distance value between the pressure heads corresponding to any two pressure detection values; calculating the distance value between the two pressure detection values ​​according to the distance coefficient calculation formula in the verification rule to obtain the distance coefficient corresponding to each distance value; performing a weighted calculation on the pressure difference between the two pressure detection values ​​according to the distance coefficient to obtain the corresponding weighted average difference; and determining whether the weighted average difference is not greater than the verification value in the verification rule to obtain a verification result of whether it passes or fails.

[0047] Furthermore, it is also possible to obtain the distance between the pressure heads corresponding to the two pressure detection values, and calculate the distance coefficient for each distance value according to the distance coefficient calculation formula in the verification rules, thereby obtaining the distance coefficient corresponding to each distance value. The distance coefficient calculation formula can be expressed as formula (1):

[0048] (1);

[0049] Where S is the calculated distance coefficient, L is a certain distance value, and R0 is the outer circle diameter corresponding to the multiple pressure heads set at the lower end of the same servo electric cylinder.

[0050] Further, the pressure difference between the pressure detection values ​​is weighted according to the distance coefficient. Since there is a distance value between two pressure heads, there is also a pressure difference value between them, that is, each distance coefficient corresponds to a pressure difference value. Specifically, the process of weighting the pressure difference according to the distance coefficient can be expressed by formula (2):

[0051] (2);

[0052] Where Y is the calculated weighted average difference, S1 is the first distance coefficient, C1 is the first pressure difference, m is the total number of distance coefficients, and the number of pressure heads set at the lower end of the same servo electric cylinder is n, then m = n × (n-1) / 2.

[0053] The system determines whether the obtained weighted average difference is not greater than the verification value in the verification rules, thus obtaining a verification result of whether the verification passes or fails. If the weighted average difference is not greater than the verification value, the verification result is "passed"; if the weighted average difference is greater than the verification value, the verification result is "failed".

[0054] S140. If the verification result is unsuccessful, return to the step of controlling the servo cylinder to slowly press down and obtaining the pressure detection values ​​collected by each pressure sensor corresponding to the servo cylinder.

[0055] If the verification result is unsuccessful, the process returns to the step of controlling the servo cylinder to slowly press down and acquiring the pressure detection values ​​collected by each pressure sensor corresponding to the servo cylinder. If the verification result is unsuccessful, the servo cylinder needs to be controlled to continue pressing down and acquiring the pressure detection values ​​collected by the pressure sensors, that is, the process returns to step S120.

[0056] In one specific embodiment, if the verification result is unsuccessful, the method further includes: obtaining an adjustment coefficient corresponding to the verification value and the pressure detection value according to a preset adjustment coefficient calculation rule; adjusting the heating parameters according to the adjustment coefficient to obtain corresponding heating adjustment parameters; and controlling the heating of the heating element according to the heating adjustment parameters.

[0057] Furthermore, if the verification result is unsuccessful, an adjustment coefficient corresponding to the verification value and pressure detection value can be obtained according to the adjustment coefficient calculation rules. The heating parameters are then adjusted based on this adjustment coefficient. Since the heating and holding temperature directly participates in the flexural deformation correction process of the injection molded part, the heating and holding temperature can be adjusted using the adjustment coefficient, thereby adjusting the heating parameters and obtaining the heating adjustment parameters. Specifically, the adjustment coefficient can be multiplied by the heating and holding temperature to obtain a new heating and holding temperature. The heating parameters containing this new heating and holding temperature are then used as the heating adjustment parameters.

[0058] Furthermore, by adjusting the heating parameters to control the heating element, the heating element can be controlled to maintain the heating temperature according to the adjusted parameters.

[0059] In one specific embodiment, obtaining the adjustment coefficients corresponding to the verification value and each pressure detection value according to the preset adjustment coefficient calculation rules includes: calculating the maximum pressure difference and the minimum pressure difference based on the pressure detection values; and calculating the maximum pressure difference, the minimum pressure difference, and the verification value input using the adjustment coefficient calculation rules to obtain the corresponding adjustment coefficients.

[0060] Specifically, the maximum and minimum pressure difference can be calculated based on the pressure detection values. This process involves first calculating the pressure difference between any two pressure detection values, then selecting the largest pressure difference from the multiple pressure differences obtained as the maximum pressure difference, and finally selecting the smallest pressure difference as the minimum pressure difference.

[0061] By calculating the maximum pressure difference, minimum pressure difference, and verification value using the adjustment coefficient calculation rules, the corresponding adjustment coefficient can be obtained. The specific process of calculating the adjustment coefficient can be expressed by formula (3):

[0062] (3);

[0063] Where P is the calculated adjustment coefficient, and c max c is the maximum pressure difference. min For the minimum pressure difference, c J is the check value, and e is the base of the natural logarithm.

[0064] S150. If the verification result is passed, update the number of passes and determine whether the updated number of passes is greater than the preset number threshold.

[0065] If the verification result is passed, the pass count is updated, and it is determined whether the updated pass count is greater than a preset threshold. If the verification result is passed, the pass count of the current injection molded part is updated, that is, the recorded pass count is incremented by one to obtain the updated pass count; it is then determined whether the updated pass count is greater than a preset threshold. For example, the preset threshold can be configured to 5.

[0066] S160. If the updated number of passes is not greater than the number threshold, control the servo cylinder to stop working and after a preset interval, return to the step of controlling the servo cylinder to slowly press down and obtaining the pressure detection values ​​collected by each pressure sensor corresponding to the servo cylinder.

[0067] If the updated number of passes is not greater than the threshold number, the servo cylinder is stopped, and after a preset interval, the process returns to the step of slowly pressing down on the servo cylinder and acquiring the pressure detection values ​​collected by the pressure sensors corresponding to the servo cylinder. If the updated number of passes is not greater than the threshold number, it indicates that the correction of the current injection molded part is not complete. The servo cylinder can be stopped, and after a preset interval, it can be restarted to slowly press down. For example, if the preset interval is 30 seconds, then after stopping the servo cylinder and waiting for 30 seconds, the process returns to step S120.

[0068] S170. If the updated number of passes is greater than the number threshold, the correction process for the injection molded part is completed.

[0069] If the updated number of passes is greater than the threshold number, the correction process for the injection molded part is complete. If the updated number of passes is greater than the threshold number, it indicates that the force on all parts of the injection molded part is balanced, that is, the correction process for the injection molded part has been completed, and the corrected injection molded part can be output at this time.

[0070] The above-described method for correcting and controlling the flexural deformation of injection molded parts includes: obtaining matching heating parameters based on the input injection molding material and controlling the heating element; controlling the servo cylinder to slowly press down and acquiring pressure detection values ​​from various pressure sensors; verifying whether the pressure detection values ​​pass; if they fail, controlling the servo cylinder to continue slowly pressing down; if they pass, updating the number of passes; if the number of passes exceeds a threshold, the correction process is complete; if the number of passes does not exceed the threshold, controlling the servo cylinder to stop working and slowly pressing down again after a preset interval. This correction control method, by acquiring and verifying the pressure detection values ​​during the correction of the injection molded part using pressure sensors, and adjusting the pressing correction process of the servo cylinder based on the verification results, achieves intelligent correction control of the injection molded part, ensuring uniform quality of the flexural deformation corrected injection molded parts and significantly improving the correction efficiency and quality.

[0071] This invention also provides an automatic correction device for the flexural deformation of injection molded parts. The automatic correction device includes a controller, which is used to execute the correction and control method for the flexural deformation of injection molded parts described in the above embodiments.

[0072] Specifically, please refer to Figures 2 to 4 ,as well as Figure 9 The automatic correction device for the flexural deformation of the injection molded part includes a machine base 10, a translation driver 20 mounted on the machine base, a base plate 201 mounted on the translation driver 20, an electric cylinder bracket 202 mounted on one side of the base plate 201, and at least one servo electric cylinder 203 mounted on the electric cylinder bracket 202. The translation driver 20 drives the base plate 201 to translate. At least one placement base 204 is provided on the base plate 201. The placement base 204 is located below the servo electric cylinder 203. Each servo electric cylinder 203 has multiple pressure heads 50 at its front end. A heating element 205 is provided inside the placement base 204. A controller 11 is fixedly mounted on the machine base 10. The controller 11 is electrically connected to the servo electric cylinder 203, the pressure sensor 510 provided on each pressure head 50, and the heating element 205 provided inside each placement base 204.

[0073] The translation driver 20 drives the base plate 201 to translate, thereby transporting the base plate 201, on which the injection molded part 12 is placed, to the area below the servo cylinder 203. The base plate 201 is provided with at least one placement base 204, which is a base with a surrounding barrier. The injection molded part 12 is placed in a cavity formed within the barrier. The front end of the servo cylinder 203 is provided with multiple pressure heads 50. When the servo cylinder 203 operates, it drives the pressure heads 50 to press down. Each pressure head 50 can apply pressure to a specific location on the injection molded part 12, thereby achieving simultaneous application of pressure to multiple locations on the injection molded part 12 via the servo cylinder 203. Each pressure head 50 is provided with a pressure sensor 510, which can individually detect the pressure value applied to the injection molded part 12 by the pressure head 50. A heating element 205 is installed inside the placement base 204. The heating element 205 can be used to heat the placement base 204, thereby softening the injection molded part 12 and facilitating deformation correction of the injection molded part 12. The controller 11 can send control commands to the servo cylinder 203 and the heating element 205 to control the operation of related components. The controller 11 can receive pressure detection values ​​collected by the pressure sensor 510. The electrical connection relationship between the controller 11 and each component is as follows: Figure 9 As shown.

[0074] In a more specific embodiment, each of the placement bases 204 is equipped with a temperature sensor 206, and the controller 11 is electrically connected to each of the temperature sensors 206. Furthermore, to achieve precise temperature control of the placement bases 204 when the heating element 205 is working, temperature sensors 206 can be installed within the placement bases 204. Each temperature sensor 206 monitors the temperature of one placement base 204 individually, allowing the controller 11 to acquire the temperature values ​​detected by each temperature sensor 206, thereby achieving real-time temperature monitoring of the placement bases 204. If the temperature value detected by the temperature sensor 206 is lower than the set temperature value, the heating element 205 is controlled to increase its heating power; if the temperature value detected by the temperature sensor 206 is higher than the set temperature value, the heating element 205 is controlled to decrease its heating power.

[0075] In a more specific embodiment, such as Figure 4 As shown, the translation driver 20 includes a translation slide rail 21 mounted on the top surface of the machine base 10 and a moving cylinder 22 disposed on the bottom surface of the machine base 10. The base plate 201 is mounted on the translation slide rail 21. The end of the drive shaft of the moving cylinder 22 is fixedly connected to the base plate 201. The moving cylinder 22 works and drives the drive shaft to move the base plate 201 along the translation slide rail 21.

[0076] A translation slide rail 21 is fixedly installed on the top surface of the machine base 10. The base plate 201 is assembled on the translation slide rail 21 and can slide along the translation slide rail 21. There are at least two translation slide rails 21. A moving cylinder 22 is installed on the bottom surface of the machine base 10. The end of the drive shaft of the moving cylinder 22 is fixedly connected to the base plate 201. When the moving cylinder 22 works under the control of the controller 11, it drives the drive shaft to slide, and the drive shaft further drives the base plate 201 to slide along the translation slide rail 21. The moving cylinder 22 is electrically connected to the controller 11.

[0077] In a more specific embodiment, a gripping device 30 is also provided on the side of the base plate 201 away from the electric cylinder bracket 202; the gripping device 30 includes a gripping lifting cylinder 31, a suction cup assembly 32, and a gripping moving cylinder 33; the gripping moving cylinder 33 is fixedly mounted on the machine base 10, and the drive shaft of the gripping moving cylinder 33 is fixedly connected to the gripping lifting cylinder 31, the gripping moving cylinder 33 drives the drive shaft and causes the gripping lifting cylinder 31 to slide horizontally; the axial direction of the drive shaft of the gripping moving cylinder 33 is perpendicular to the axial direction of the translation slide rail 21; the output shaft of the gripping lifting cylinder 31 is connected to one end of the connecting plate 34, and a plurality of suction cup assemblies 32 are fixedly mounted on the other end of the connecting plate 34 facing the side of the machine base 10. The base plate 201 is provided with two placement bases 204 arranged along the axial direction of the drive shaft of the gripping and moving cylinder 33; the connecting plate 34 is provided with two suction cup assemblies 32 corresponding to the placement bases 204, and the specific structure is as follows. Figure 5 As shown.

[0078] A gripping device 30 is also provided on the side of the base plate 201 away from the electric cylinder bracket 202. The gripping moving cylinder 33 works and drives the transmission shaft to move. The transmission shaft drives the gripping lifting cylinder 31 to slide horizontally. When the gripping lifting cylinder 31 works, it can drive the connecting plate 34 to move vertically through its output shaft. The vertical movement of the connecting plate 34 can further drive the suction cup assembly 32 to move vertically. At this time, the suction cup 321 can pick up the injection molded part on the placement base 204, thereby realizing the transfer of the injection molded part. For example, the injection molded part that has completed the correction process can be picked up from the placement base 204 and output to other positions.

[0079] Furthermore, to improve the efficiency of correcting the injection molded parts, two placement bases 204 can be installed on the floor. The two placement bases 204 are arranged along the axial direction of the drive shaft of the gripping and moving cylinder 33. At the same time, two suction cup assemblies 32 are installed on the connecting plate 34, so that each suction cup assembly 32 corresponds to one placement base 204. The gripping and moving cylinder 33 and the gripping and lifting cylinder 31 are electrically connected to the controller 11.

[0080] In a more specific embodiment, the lifting cylinder 41 is fixedly mounted on the electric cylinder bracket 202. The drive shaft of the lifting cylinder 41 is fixedly connected to the electric cylinder connecting plate 42. Two servo electric cylinders 203, corresponding to the placement base 204, are respectively provided at both ends of the electric cylinder connecting plate 42. The lifting cylinder 41 is electrically connected to the controller 11. Specifically, the suction cup assembly 32 consists of four suction cups 321 arranged in a square configuration, as shown in the specific configuration below. Figure 6 and Figure 7 As shown.

[0081] Furthermore, the lifting cylinder 41 can be fixedly mounted on the electric cylinder bracket 202. When the lifting cylinder 41 is working, it can drive the electric cylinder connecting plate 42 to move up and down via its transmission shaft. The electric cylinder connecting plate 42 can further drive the servo electric cylinders 203 at both ends to move vertically. The starting position of the servo electric cylinder 203 can be adjusted by the lifting cylinder 41. This allows the servo electric cylinder 203 to adjust its position more flexibly and to correct the injection molded parts more easily. To further improve the suction effect of the suction cup assembly 32, the suction cup assembly 32 can be configured to consist of four suction cups 321, which are arranged in a square. The lifting cylinder 41 is electrically connected to the controller 11.

[0082] In a more specific embodiment, the pressure head 50 includes a pressure head fixing sleeve 51 and a pressure head body 52 assembled within the pressure head fixing sleeve 51; the pressure sensor 510 is disposed on the side wall of the pressure head fixing sleeve 51. The outer diameter of the pressure head body 52 gradually decreases from one side of the pressure head fixing sleeve 51 to its end. Specifically, the pressure head 50 disposed at the front end of each servo electric cylinder 203 consists of a central pressure head and multiple edge pressure heads; the edge pressure heads are evenly arranged around the central pressure head, with a specific configuration as shown below. Figure 8 As shown.

[0083] Furthermore, the pressure head 50 can be configured to consist of a pressure head fixing sleeve 51 and a pressure head body 52. ​​The pressure head body 52 directly contacts the injection molded part, and the pressure sensor 510 is disposed on the side wall of the pressure head fixing sleeve 51. Therefore, when the pressure sensor 510 collects pressure values, it will not affect the pressure applied to the injection molded part by the pressure head body 52, thus improving the accuracy of pressure value acquisition. Furthermore, to improve the downward pressing effect of the pressure head 50, the outer diameter of the pressure head body 52 can be configured to gradually decrease from one side of the pressure head fixing sleeve 51 to the end, and edge pressure heads can be evenly distributed around the central pressure head. The specific shape of the pressure head body 52 and the specific arrangement structure of the multiple pressure heads 50 are as follows: Figure 8 As shown.

[0084] The method and automatic correction device for correcting flexural deformation of injection molded parts provided in this invention include: obtaining matching heating parameters based on the input injection molding material and controlling the heating element; controlling a servo cylinder to slowly press down and acquiring pressure detection values ​​collected by various pressure sensors; verifying whether the pressure detection values ​​pass; if they fail, controlling the servo cylinder to continue slowly pressing down; if they pass, updating the number of passes; if the number of passes exceeds a threshold, the correction process is completed; if the number of passes does not exceed the threshold, controlling the servo cylinder to stop working and slowly pressing down again after a preset interval. This correction control method, by acquiring and verifying the pressure detection values ​​during the correction of the injection molded part using pressure sensors, and adjusting the pressing correction process of the servo cylinder based on the verification results, achieves intelligent correction control of the injection molded part, ensuring uniform quality of the injection molded parts undergoing flexural deformation correction, and significantly improving the correction efficiency and quality of the injection molded parts.

[0085] The aforementioned method for correcting and controlling the flexural deformation of injection molded parts can be implemented as a computer program, and the aforementioned controller can be implemented as a computer device. This computer program can be used in various ways, such as... Figure 10 It runs on the computer device shown.

[0086] Please see Figure 10 , Figure 10 This is a schematic block diagram of a computer device provided in an embodiment of the present invention. The computer device may be a controller for executing a method for correcting and controlling the flexural deformation of injection-molded parts.

[0087] See Figure 10 The computer device 500 includes a processor 502, a memory, and a network interface 505 connected via a system bus 501. The memory may include a storage medium 503 and internal memory 504.

[0088] The storage medium 503 may store an operating system 5031 and a computer program 5032. When the computer program 5032 is executed, it causes the processor 502 to execute a method for correcting the flexural deformation of the injection molded part. The storage medium 503 may be a volatile storage medium or a non-volatile storage medium.

[0089] The processor 502 provides computing and control capabilities to support the operation of the entire computer device 500.

[0090] The internal memory 504 provides an environment for the operation of the computer program 5032 in the storage medium 503. When the computer program 5032 is executed by the processor 502, the processor 502 can execute a method for correcting and controlling the flexural deformation of the injection molded part.

[0091] This network interface 505 is used for network communication, such as providing data transmission. Those skilled in the art will understand that... Figure 10 The structure shown is merely a block diagram of a portion of the structure related to the present invention and does not constitute a limitation on the computer device 500 to which the present invention is applied. The specific computer device 500 may include more or fewer components than shown in the figure, or combine certain components, or have different component arrangements.

[0092] The processor 502 is used to run the computer program 5032 stored in the memory to implement the corresponding functions in the above-mentioned method for correcting and controlling the flexural deformation of injection molded parts.

[0093] Those skilled in the art will understand that Figure 10 The embodiments of the computer device shown do not constitute a limitation on the specific configuration of the computer device. In other embodiments, the computer device may include more or fewer components than illustrated, or combine certain components, or have different component arrangements. For example, in some embodiments, the computer device may include only memory and a processor. In such embodiments, the structure and function of the memory and processor are different from those shown. Figure 10 The embodiments shown are consistent and will not be described again here.

[0094] It should be understood that, in this embodiment of the invention, the processor 502 may be a Central Processing Unit (CPU), or it may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0095] In another embodiment of the invention, a computer-readable storage medium is provided. This computer-readable storage medium may be volatile or non-volatile. The computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps included in the above-described method for correcting and controlling the flexural deformation of injection-molded parts.

[0096] Those skilled in the art will readily understand that, for the sake of convenience and brevity, the specific working processes of the devices, apparatuses, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in terms of function in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this invention.

[0097] In the embodiments provided by this invention, it should be understood that the disclosed devices, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative. For instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. Units with the same function may be grouped into one unit. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. In addition, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interfaces, devices, or units, or it may be an electrical, mechanical, or other form of connection.

[0098] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of the embodiments of the present invention, depending on actual needs.

[0099] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0100] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a computer-readable storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned computer-readable storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), magnetic disks, or optical disks.

[0101] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A method for correcting and controlling the flexural deformation of injection molded parts, wherein the control method is applied in the controller of an automatic correction device, the automatic correction device is equipped with at least one servo cylinder, each servo cylinder has multiple pressure heads at its front end, and each servo cylinder has a placement base on its lower side; the controller is communicatively connected to the servo cylinders, pressure sensors on each pressure head, and heating elements in each placement base, characterized in that... The control method includes: The heating parameters are obtained according to the input injection molding material to control the heating of the heating element. The servo electric cylinder is controlled to slowly press down the injection molded part placed on the base and the pressure detection values ​​collected by each pressure sensor corresponding to the servo electric cylinder are obtained. The pressure detection value is verified according to the preset verification rules to obtain a verification result indicating whether it passes or fails. If the verification result is a failure, return to the step of controlling the servo electric cylinder to slowly press down and obtaining the pressure detection values ​​collected by each pressure sensor corresponding to the servo electric cylinder; If the verification result is passed, update the number of passes and determine whether the updated number of passes is greater than the preset number of passes threshold; If the updated number of passes is not greater than the number threshold, the servo cylinder is controlled to stop working and after a preset interval, the process returns to the step of controlling the servo cylinder to slowly press down and obtaining the pressure detection values ​​collected by each pressure sensor corresponding to the servo cylinder. If the updated number of passes is greater than the threshold number, the correction process for the injection molded part is completed.

2. The method for correcting and controlling the flexural deformation of injection molded parts according to claim 1, characterized in that, The step of verifying the pressure detection value according to preset verification rules to obtain a verification result indicating whether it passes or fails includes: Calculate the pressure difference between any two of the pressure detection values; Determine whether each pressure difference is not greater than the verification value in the verification rule to obtain a verification result indicating whether the verification is passed.

3. The method for correcting and controlling the flexural deformation of injection molded parts according to claim 1, characterized in that, The step of verifying the pressure detection value according to preset verification rules to obtain a verification result indicating whether it passes or fails includes: Obtain the nearest distance value and the farthest distance value of the pressure head corresponding to each pressure detection value. The nearest distance value is the distance between the pressure head corresponding to the pressure detection value and the nearest neighboring pressure head. The farthest distance value is the distance between the pressure head corresponding to the pressure detection value and the farthest pressure head. The average pressure difference corresponding to each pressure detection value is calculated by averaging the two pressure differences between the nearest distance value and the farthest distance value. Determine whether each of the average pressure differences is not greater than the verification value in the verification rules to obtain a verification result indicating whether the verification is passed.

4. The method for correcting and controlling the flexural deformation of injection molded parts according to claim 1, characterized in that, The step of verifying the pressure detection value according to preset verification rules to obtain a verification result indicating whether it passes or fails includes: Obtain the distance between any two pressure detection values ​​corresponding to the pressure heads; The distance between the two pressure detection values ​​is calculated according to the distance coefficient calculation formula in the verification rules to obtain the distance coefficient corresponding to each distance value; The pressure difference between the two pressure detection values ​​is weighted according to the distance coefficient to obtain the corresponding weighted average difference. Determine whether the weighted average difference is not greater than the verification value in the verification rule to obtain the verification result of whether it passes or fails.

5. The method for correcting and controlling the flexural deformation of injection molded parts according to any one of claims 2-4, characterized in that, If the verification result is unsuccessful, the method further includes: The adjustment coefficients corresponding to the verification value and the pressure detection value are obtained according to the preset adjustment coefficient calculation rules; The heating parameters are adjusted according to the adjustment coefficient to obtain the corresponding heating adjustment parameters; The heating element is heated according to the heating adjustment parameters.

6. The method for correcting and controlling the flexural deformation of injection molded parts according to claim 5, characterized in that, The step of obtaining the adjustment coefficients corresponding to the verification value and each pressure detection value according to the preset adjustment coefficient calculation rules includes: The maximum and minimum pressure differences are calculated based on the pressure detection values. The adjustment coefficient is calculated using the adjustment coefficient calculation rules to obtain the corresponding adjustment coefficient for the maximum pressure difference, the minimum pressure difference, and the verification value input.

7. An automatic correction device for flexural deformation of injection molded parts, wherein the controller in the automatic correction device executes the correction control method for flexural deformation of injection molded parts as described in any one of claims 1-6, characterized in that, The device includes a machine base, a translation driver mounted on the machine base, a base plate mounted on the translation driver, an electric cylinder bracket mounted on one side of the base plate, and at least one servo electric cylinder mounted on the electric cylinder bracket. The translation driver drives the base plate to translate; The base plate is provided with at least one placement base, which is located on the lower side of the servo electric cylinder. Each servo electric cylinder is provided with multiple pressure heads at its front end. A heating element is installed inside the placement base; The controller is fixedly mounted on the machine base and is electrically connected to the servo cylinder, the pressure sensor mounted on each of the pressure heads, and the heating tube mounted in each of the placement bases.

8. The automatic correction device for flexural deformation of injection molded parts according to claim 7, characterized in that, Each of the placement bases is equipped with a temperature sensor, and the controller is electrically connected to each of the temperature sensors.

9. The automatic correction device for flexural deformation of injection molded parts according to claim 8, characterized in that, The translation drive includes a translation slide rail mounted on the top surface of the machine tool and a moving cylinder disposed on the bottom surface of the machine tool, and the base plate is mounted on the translation slide rail; The end of the drive shaft of the movable cylinder is fixedly connected to the base plate. The movable cylinder works and drives the drive shaft to move the base plate along the translation slide rail.

10. The automatic correction device for flexural deformation of injection molded parts according to claim 8, characterized in that, The base plate is also provided with a gripping device on the side away from the electric cylinder bracket; The gripping device includes a gripping lifting cylinder, a suction cup assembly, and a gripping moving cylinder; The gripping moving cylinder is fixedly mounted on the machine base. The drive shaft of the gripping moving cylinder is fixedly connected to the gripping lifting cylinder. The gripping moving cylinder drives the drive shaft and causes the gripping lifting cylinder to slide horizontally. The output shaft of the gripping lifting cylinder is connected to one end of the connecting plate, and multiple suction cup assemblies are fixedly installed on the other end of the connecting plate facing one side of the machine platform.

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