Injection molding machine control system and injection molding machine

Abstract

According to the injection molding machine control system and the injection molding machine provided by the embodiment of the invention, the reference mold clamping force input by the user is obtained through the mold clamping force input module, the mold clamping force of the mold clamping equipment is detected through the mold clamping force detection module, and the mold clamping force of the mold clamping equipment is automatically adjusted through the mold clamping force control module, so that the adjustment efficiency of the mold clamping force is improved; and the mold locking force of the mold locking equipment is maintained near the reference mold locking force, so that the stability of the mold locking force is realized, the product quality is improved, and resource waste and structural abrasion and aging are avoided. Furthermore, when the mold locking force is adjusted for multiple times, the mold locking force still cannot be adjusted to be close to the reference mold locking force, first alarm information is sent out through the first alarm module to remind a user that the mold locking equipment has faults, the user can handle the faults of the mold locking equipment in time, and the product quality is improved.

Description

TECHNICAL FIELD

[0001] The embodiment of the present application relates to injection molding machine control technical field, in particular to an injection molding machine control system and injection molding machine. BACKGROUND

[0002] The injection molding machine is also called injection molding machine or injection machine. It is the main molding equipment for making various shape plastic products by using thermoplastic or thermosetting plastics and molding die. The injection molding machine can heat the plastic, apply high pressure to the molten plastic, and make it fill the mold cavity.

[0003] In the production or use process of the injection molding machine, the change of the mechanical body of the injection molding machine caused by long-time continuous work can change the clamping force. If the clamping force is too small, the product flash or material shortage phenomenon can be caused, and the product quality is affected. If the clamping force is too large, the system resource is wasted, and the hydraulic element is prematurely aged and the mechanical structure is worn. CONTENT OF THE UTILITY MODEL

[0004] In order to overcome the problems in the prior art, the present application provides an injection molding machine control system and injection molding machine, which can improve product quality, avoid resource waste and structural wear and aging.

[0005] According to the first aspect of the embodiment of the present application, an injection molding machine control system is provided, which comprises a clamping device and a clamping force control device; the clamping force control device comprises:

[0006] A clamping force input module for receiving user input of reference clamping force;

[0007] A clamping force detection module for detecting the clamping force of the clamping device;

[0008] A clamping force control module for receiving the clamping force sent by the clamping force detection module, adjusting the clamping force of the clamping device when the difference between the clamping force and the reference clamping force is not within the preset first deviation range, and issuing a first alarm control signal when the difference between the clamping force and the reference clamping force is still not within the preset first deviation range after the clamping force is adjusted for a continuous first preset number of times;

[0009] A first alarm module for receiving the first alarm control signal and issuing a first alarm information;

[0010] The clamping force detection module is arranged on the clamping device; the clamping force input module, the clamping force detection module and the first alarm module are respectively connected with the clamping force control module.

[0011] According to the second aspect of the embodiment of the present application, an injection molding machine is provided, which comprises the injection molding machine control system according to any one of the above.

[0012] The embodiment of the application obtains the reference clamp force input by the user through the clamp force input module, detects the clamp force of the clamp device through the clamp force detection module, and automatically adjusts the clamp force of the clamp device through the clamp force control module, thereby improving the adjustment efficiency of the clamp force, maintaining the clamp force of the clamp device near the reference clamp force, realizing the stability of the clamp force, improving the product quality, avoiding resource waste, and reducing structural wear and aging. Further, when the clamp force is adjusted for multiple times, the clamp force still cannot be adjusted to the vicinity of the reference clamp force, and the first alarm module sends a first alarm information to prompt the user that the clamp device has a fault, so that the user can timely handle the fault of the clamp device, and the product quality is improved.

[0013] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the application.

[0014] In order to better understand and implement, the utility model is described in detail below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The structure schematic view of the injection molding machine control system shown in an embodiment of the application;

[0016] Figure 2 The structure schematic view of the clamp force control module shown in an embodiment of the application;

[0017] Figure 3 The structure schematic view of the injection molding machine control system shown in another embodiment of the application;

[0018] Figure 4 The structure schematic view of the clamp force control module shown in another embodiment of the application;

[0019] Figure 5 The structure schematic view of the injection molding machine control system shown in another embodiment of the application;

[0020] Figure 6 The structure schematic view of the reference injection data acquisition module shown in an embodiment of the application;

[0021] Figure 7 The structure schematic view of the injection control module shown in an embodiment of the application;

[0022] Figure 8 The structure schematic view of the injection molding machine shown in an embodiment of the application. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the application more clear, the following will further describe the embodiment of the application with reference to the drawings.

[0024] It should be clear that the described embodiments are only the first part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the present application.

[0025] The following description refers to the accompanying drawings. In the drawings, like reference numbers indicate identical or similar elements, unless otherwise indicated.

[0026] In the description of the present application, it should be understood that the terms "first", "second", "third" and the like are used only to distinguish similar objects, and do not necessarily indicate a specific order or sequence, nor can they be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. The singular forms "a", "said" and "the" used in the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. The word "if" used herein can be interpreted as "when" or "when" or "in response to determining". In addition, in the description of the present application, "multiple" means two or more, unless otherwise specified. The "and / or" describes the relationship between the associated objects, indicating that there can be three relationships, for example, A and / or B can represent the existence of A alone, the existence of A and B, and the existence of B alone. The character " / " generally represents an "or" relationship between the associated objects.

[0027] Please refer to Figure 1 , which is a structural schematic diagram of the injection molding machine control system according to the embodiments of the present application. The injection molding machine control system provided by the embodiments of the present application comprises a mold clamping device and a mold clamping force control device; the mold clamping force control device comprises:

[0028] a mold clamping force input module 21 for receiving a user input of a reference mold clamping force;

[0029] a mold clamping force detection module 23 for detecting the mold clamping force of the mold clamping device;

[0030] a mold clamping force control module 25 for receiving the mold clamping force sent by the mold clamping force detection module 23, adjusting the mold clamping force of the mold clamping device when the difference between the mold clamping force and the reference mold clamping force is not within a first preset deviation range, and issuing a first alarm control signal when the difference between the mold clamping force and the reference mold clamping force is still not within the first preset deviation range after the mold clamping force is adjusted for a continuous first preset number of times;

[0031] a first alarm module 27 for receiving the first alarm control signal and issuing a first alarm information;

[0032] The mold clamping force detection module 23 is arranged on the mold clamping device; the mold clamping force input module 21, the mold clamping force detection module 23 and the first alarm module 27 are connected with the mold clamping force control module 25 respectively.

[0033] The mold clamping device includes but is not limited to a mechanical mold clamping mechanism and a hydraulic mold clamping mechanism, and is used for applying a mold clamping force to the mold to lock the mold.

[0034] The reference mold clamping force can be determined according to the projection area of the mold, the cavity pressure and the material type.

[0035] In the embodiment, during the mold clamping process of the mold clamping device, the mold clamping force detection module 23 detects the mold clamping force of the mold clamping device in real time, and sends the mold clamping force to the mold clamping force control module 25. The mold clamping force control module 25 judges whether the difference between the mold clamping force and the reference mold clamping force is within the first deviation range. If not, it means that the mold clamping force is too large or too small at this time, and the mold clamping force control module 25 will automatically adjust the mold clamping force of the mold clamping device. Specifically, the mold clamping force of a fixed unit size can be increased or decreased on the basis of the existing mold clamping force. After adjusting the mold clamping force of the mold clamping device, it is judged again whether the difference between the mold clamping force and the reference mold clamping force is within the first deviation range. If not, the size of the mold clamping force is continuously adjusted until the difference between the mold clamping force and the reference mold clamping force is within the first deviation range. When the number of times of adjusting the mold clamping force by the mold clamping force control module 25 reaches the first preset number of times, the difference between the mold clamping force and the reference mold clamping force is still not within the first deviation range, and the mold clamping force control module 25 sends a first alarm control signal to the first alarm module 27, so that the first alarm module 27 sends a first alarm information to prompt that the mold clamping device has a fault.

[0036] According to the embodiment, the reference mold clamping force input by the user is obtained through the mold clamping force input module, the mold clamping force of the mold clamping device is detected through the mold clamping force detection module 23, and the mold clamping force of the mold clamping device is automatically adjusted through the mold clamping force control module 25, so that the adjustment efficiency of the mold clamping force is improved, the mold clamping force of the mold clamping device is maintained near the reference mold clamping force, the stability of the mold clamping force is realized, the product quality is improved, resource waste is avoided, and structural wear and aging are avoided. Further, when the mold clamping force is adjusted for many times and still cannot be adjusted to the vicinity of the reference mold clamping force, the first alarm module 27 sends a first alarm information to prompt that the mold clamping device has a fault, so that the user can handle the fault of the mold clamping device in time, and the product quality is improved.

[0037] In one embodiment, please refer to Figure 1, the clamping device includes a fixed template 11, a movable template 12, a tail plate 13, a pull rod 14, a clamping oil cylinder 15, a connecting rod 16, an oil pump 17, an oil tank 18, a first oil pipe 19 and a second oil pipe 20, one end of the pull rod 14 is connected with the fixed template 11, the other end of the pull rod 14 is connected with the tail plate 13, the movable template 12 is slidably arranged on the pull rod 14, the clamping oil cylinder 15 and the connecting rod 16 are arranged between the movable template 12 and the tail plate 13, one end of the connecting rod 16 is connected with the clamping oil cylinder 15, the other end of the connecting rod 16 is connected with the movable template 12, the oil inlet of the oil pump 17 is connected with the outlet of the oil tank through the first oil pipe 19, the oil outlet of the oil pump 17 is connected with the clamping oil cylinder 15 through the second oil pipe 20, the oil pump 17 delivers the hydraulic oil in the oil tank to the clamping oil cylinder 15, the clamping oil cylinder 15 drives the movable template 12 to move along the axial direction of the pull rod 14 through the driving of the connecting rod 16, so as to generate a clamping force between the fixed template 11 and the movable template 12, and the injection material injected into the fixed template 11 and the movable template 12 is clamped;

[0038] The clamping force detection module 23 includes a force sensor for detecting the clamping force between the fixed template 11 and the movable template 12.

[0039] The clamping force control module 25 includes a mold adjusting nut and a mold adjusting motor, the mold adjusting nut is arranged on the pull rod 14, the mold adjusting motor is arranged on the tail plate 13, the mold adjusting motor drives the mold adjusting nut to move along the axial direction of the pull rod 14, so as to change the mold thickness between the fixed template 11 and the movable template 12, and adjust the clamping force.

[0040] The fixed template 11 is usually fixed on the injection molding machine frame, and is used to provide a stable support surface for mounting and fixing one half of the mold.

[0041] The movable template 12 is arranged opposite to the fixed template 11. The movable template 12 moves on the injection molding machine frame through a certain form of guiding mechanism (such as four-column guiding, slide rail, etc.). The movable template 12 is used to mount and fix the other half of the mold, and tightly abuts against the fixed template 11 during the clamping process to form a closed mold cavity.

[0042] The tail plate 13 is usually fixed on the injection molding machine frame, and is used to bear the clamping oil cylinder 15, which is connected with the fixed template 11 through the pull rod 14, so as to ensure the rigidity and stability of the entire clamping system.

[0043] The pull rod 14 extends through the entire clamping device from the tail plate 13 to the fixed template 11, and functions to maintain the parallelism between the movable template 12 and the fixed template 11, and to bear the pulling force. The pull rod 14 is fixed at both ends on the tail plate 13 and the fixed template 11 respectively, so as to ensure that no deviation occurs during the clamping process.

[0044] The mold-locking cylinder 15 is used to push the movable template 12 closer to or further away from the fixed template 11, thereby locking and releasing the mold. Specifically, the mold-locking cylinder 15 is generally installed near the tail plate 13, and its piston rod is connected to the movable template 12. When the hydraulic oil in the mold-locking cylinder 15 is pressurized, the piston rod extends, pushing the movable template 12 forward; conversely, it pulls the movable template 12 backward.

[0045] The connecting rod 16 transmits the motion of the clamping cylinder 15 to the movable template 12 and helps maintain parallel movement between the templates. One end of the connecting rod 16 is connected to the piston rod of the clamping cylinder 15, and the other end is connected to a hinge point on the movable template 12. This arrangement allows the small stroke of the clamping cylinder 15 to be converted into a large stroke of the movable template 12 through leverage.

[0046] The force sensor can be attached to the surface of the tail plate 13 to obtain the clamping force by measuring the tension or pressure on the tail plate 13. The force sensor can also be installed at the outlet of the oil pump 17. When the oil pump 17 operates, it pressurizes the hydraulic oil and delivers it to the clamping cylinder 15 through an oil pipe. At this time, the force sensor detects the pressure of the hydraulic oil, and the clamping force can be obtained based on the piston area of ​​the clamping cylinder 15 and the pressure of the hydraulic oil. Finally, the force sensor can be installed on the tie rod 14. When the movable template 12 moves along the fixed template 11 and finally closes, the molten plastic inside the mold generates enormous pressure. This pressure is transmitted to the tie rod 14 through the mold cavity and template, and the clamping force is obtained by measuring the pressure on the tie rod 14.

[0047] Here, mold thickness refers to the maximum vertical distance between the mold parting surfaces. During injection molding, the mold needs to be tightly clamped between the movable platen 12 and the fixed platen 11 of the injection molding machine to ensure that the injection material does not leak. When the mold thickness increases, the clamping equipment needs to apply a greater clamping force to clamp the mold; when the mold thickness decreases, the clamping force required by the clamping equipment will decrease accordingly.

[0048] In an alternative embodiment, the clamping force of the first several production cycles after the injection molding machine starts production is averaged to obtain a reference clamping force. The actual clamping force is measured by a force sensor installed at the oil outlet of the oil pump 17. The actual clamping force is compared with the reference clamping force by the clamping force detection module 23, and when the difference between the actual clamping force and the reference clamping force is not within a preset first deviation range, the mold adjusting motor drives the mold adjusting nut to rotate, the mold adjusting nut drives the movable mold plate 12 to move, and the mold thickness between the fixed mold plate 11 and the movable mold plate 12 is changed to adjust the clamping force. Specifically, when the actual clamping force is smaller than the reference clamping force, the mold adjusting motor drives the mold adjusting nut to rotate, the mold adjusting nut drives the movable mold plate 12 to move away from the fixed mold plate 11, the mold thickness is increased, and thus the clamping force is increased; on the contrary, the mold adjusting nut drives the movable mold plate 12 to move close to the fixed mold plate 11, the mold thickness is reduced, and thus the clamping force is reduced, and finally the clamping force is dynamically maintained within the preset first deviation range with the reference clamping force.

[0049] In an alternative embodiment, the clamping force input module 21 includes a display screen, and the user can input the reference clamping force on the display screen.

[0050] In an alternative embodiment, the first preset number of times can be set according to actual needs.

[0051] In an embodiment, referring to Figure 2 , the clamping force control module 25 includes:

[0052] a first comparator 251 for comparing the difference between the clamping force and the reference clamping force with a preset first deviation range, and sending an adjustment signal when the difference between the clamping force and the reference clamping force is not within the preset first deviation range;

[0053] a clamping force adjusting structure 253 for receiving the adjustment signal sent by the first comparator 251 and adjusting the clamping force of the clamping device;

[0054] a first counter 255 for receiving the adjustment signal sent by the first comparator 251 and counting;

[0055] a second comparator 257 for comparing the first value accumulated by the first counter 255 with a first preset number of times, and sending a first alarm control signal when the first value accumulated by the first counter 255 is greater than or equal to the first preset number of times;

[0056] The input end of the first comparator 251 is connected with the clamping force detection module 23, and the output end of the first comparator 251 is connected with the clamping force adjusting structure 253; the output end of the first comparator 251 is also connected with the input end of the first counter 255, the output end of the first counter 255 is connected with the input end of the second comparator 257, and the output end of the second comparator 257 is connected with the first alarm module 27.

[0057] In the embodiment of the present application, the mode lock force control module comprises a first comparator 251, a mode lock force adjusting structure 253, a first counter 255 and a second comparator 257. Specifically, when the difference between the mode lock force and the reference mode lock force is within the preset first deviation range, the first comparator 251 does not send an adjusting signal. When the difference between the mode lock force and the reference mode lock force is not within the preset first deviation range, the first comparator 251 sends an adjusting signal. The mode lock force adjusting structure 253 adjusts the size of the mode lock force according to the adjusting signal. The first counter 255 counts the number of times when the difference between the mode lock force and the reference mode lock force is not within the preset first deviation range, and obtains a first value. When the first value accumulated by the first counter 255 is greater than or equal to a first preset number of times, the second comparator 257 sends a first alarm control signal to the first alarm module 27. When the first value accumulated by the first counter 255 is less than the first preset number of times, the second comparator 257 does not send the first alarm control signal to the first alarm module 27. Specifically, the first alarm control signal can be an optical alarm control signal, and the first alarm information can be a yellow light.

[0058] Through the cooperation of the first comparator 251, the mode lock force adjusting structure 253, the first counter 255 and the second comparator 257, the mode lock force of the mode lock device can be automatically adjusted to the vicinity of the reference mode lock force. When the mode lock force cannot be adjusted to the vicinity of the reference mode lock force, the first alarm information is sent to prompt the user that the mode lock device has a fault, so that the user can handle the fault of the mode lock device in time, and the product quality is improved.

[0059] In an optional embodiment, the first alarm module 27 comprises but is not limited to a display screen, a sounder and an alarm lamp, the first alarm control signal comprises but is not limited to a pop-up window alarm control signal, an audio alarm control signal and / or an optical alarm control signal, and the first alarm information comprises but is not limited to a pop-up window alarm signal, an audio alarm signal and / or an optical alarm signal. The pop-up window alarm signal can be a subtitle pop-up window displaying text prompt content, the audio alarm signal can be a sound emitted by a buzzer, and the optical alarm signal can be a color light emitted by an alarm lamp.

[0060] Optionally, after sending the first alarm control signal, the mode lock force control module 25 also accumulates an alarm duration, compares the accumulated alarm duration with a plurality of duration thresholds, and thus displays different text prompt contents through a subtitle pop-up window, emits different sounds through a buzzer and / or emits different color lights through an alarm lamp to perform different degrees of alarm prompt when the alarm duration exceeds different duration thresholds.

[0061] Optionally, the mold clamping force control module 25, after sending the first alarm control signal, also accumulates the alarm duration, compares the accumulated alarm duration with a plurality of duration thresholds, and thereby sends the pop-up alarm signal, the audio alarm signal and the light alarm signal in turn through the first alarm module 27 when the alarm duration exceeds different duration thresholds.

[0062] In one embodiment, referring to Figure 3 , the mold clamping force control module 25 is also used to send a second alarm control signal when the number of times that the mold clamping force is greater than the maximum mold clamping force borne by the injection molding machine is greater than or equal to a second preset number; the injection molding machine control system also includes a second alarm module 29 for receiving the second alarm control signal and sending a second alarm information; and the mold clamping force control module 25 is connected with the second alarm module 29.

[0063] The maximum mold clamping force borne by the injection molding machine refers to the mold clamping force of the injection molding machine under full load, and the size of the mold clamping force of the injection molding machine under full load depends on the model, specification and design of the injection molding machine. Different models and specifications of injection molding machines will have different full load mold clamping forces. Generally, the manufacturer of the injection molding machine will clearly mark the full load mold clamping force in the product manual, so that the user can select according to the actual demand.

[0064] The second preset number can be set according to the actual demand.

[0065] The second alarm module 29 includes but is not limited to a display screen, a sounder and an alarm light, and the second alarm control signal includes but is not limited to a pop-up alarm control signal, an audio alarm control signal and / or a light alarm control signal. The second alarm information includes but is not limited to a pop-up alarm signal, an audio alarm signal and / or a light alarm signal. The pop-up alarm signal can be a subtitle pop-up display text prompt content, the audio alarm signal can be a sound emitted by a buzzer, and the light alarm signal can be a color light emitted by an alarm light. The second alarm control signal is different from the first alarm control signal, and the second alarm information is different from the first alarm information.

[0066] Optionally, the mold clamping force control module 25, after sending the second alarm control signal, also accumulates the alarm duration, compares the accumulated alarm duration with a plurality of duration thresholds, and thereby displays different text prompt contents through the subtitle pop-up, emits different sounds through the buzzer and / or emits different color lights through the alarm light to perform different degree of alarm prompt when the alarm duration exceeds different duration thresholds.

[0067] Optionally, the mold clamping force control module 25, after sending the second alarm control signal, also accumulates the alarm duration, compares the accumulated alarm duration with a plurality of duration thresholds, and thereby sends the pop-up alarm signal, the audio alarm signal and the light alarm signal in turn through the second alarm module 29 when the alarm duration exceeds different duration thresholds.

[0068] In the embodiment of the present application, when the number of times that the mold clamping force is greater than the maximum mold clamping force borne by the injection molding machine is greater than or equal to the second preset number of times, the mold clamping force control module 25 sends a second alarm control signal. When the number of times that the mold clamping force is greater than the maximum mold clamping force borne by the injection molding machine is less than the second preset number of times, the mold clamping force control module 25 does not send the second alarm control signal. After the second alarm control signal is received by the second alarm module 29, the second alarm module 29 sends second alarm information.

[0069] Through the cooperation of the mold clamping force control module 25 and the second alarm module 29, the user can be prompted that the mold clamping force is abnormal when the mold clamping force is too large for multiple times, so as to avoid that the mold clamping force is too large for multiple times, which causes the deformation or damage of the mold.

[0070] In one embodiment, referring to Figure 4 , the mold clamping force control module 25 further comprises:

[0071] a third comparator 252 configured to compare the mold clamping force with the maximum mold clamping force borne by the injection molding machine, and send a first signal when the mold clamping force is greater than or equal to the maximum mold clamping force borne by the injection molding machine;

[0072] a second counter 254 configured to receive the first signal and count;

[0073] a fourth comparator 256 configured to compare a second value accumulated by the second counter 254 with a second preset number of times, and send a second alarm control signal when the second value accumulated by the second counter 254 is greater than the second preset number of times;

[0074] The input end of the third comparator 252 is connected with the mold clamping force detection module 23, the output end of the third comparator 252 is connected with the input end of the second counter 254, the output end of the second counter 254 is connected with the input end of the fourth comparator 256, and the output end of the fourth comparator 256 is connected with the second alarm module 29.

[0075] The first signal is used to indicate that the mold clamping force is greater than or equal to the maximum mold clamping force borne by the injection molding machine.

[0076] In the embodiment of the present application, the mold clamping force control module 25 further comprises a third comparator 252, a second counter 254 and a fourth comparator 256. Specifically, the third comparator 252 sends a first signal when the mold clamping force is greater than or equal to the maximum mold clamping force borne by the injection molding machine. The third comparator 252 does not send the first signal when the mold clamping force is less than the maximum mold clamping force borne by the injection molding machine. The second counter 254 counts the number of times when the mold clamping force is greater than or equal to the maximum mold clamping force borne by the injection molding machine, and obtains a second value. The fourth comparator 256 sends a second alarm control signal to the second alarm module 29 when the second value accumulated by the second counter 254 is greater than a second preset number of times. The fourth comparator 256 does not send the second alarm control signal to the second alarm module 29 when the second value accumulated by the second counter 254 is less than or equal to the second preset number of times.

[0077] Through the cooperation of the third comparator 252, the second counter 254 and the fourth comparator 256, the embodiment of the present application can send the second alarm control signal to prompt the user that the mold clamping force is abnormal when the mold clamping force is excessively large for multiple times, so as to avoid that the mold clamping force is excessively large for multiple times, which leads to the deformation or damage of the mold.

[0078] In one embodiment, referring to Figure 5 , the injection molding machine control system further comprises a plastic injection device and a plastic injection control device;

[0079] The plastic injection device comprises a screw 31, a rotating shaft 33 and a driving motor 35. The screw 31 is provided with a nozzle 311. One end of the rotating shaft 33 is connected to the screw 31, and the other end of the rotating shaft 33 is connected to the driving motor 35. The driving motor 35 drives the rotating shaft 33 to move the screw 31, so that the nozzle 311 of the screw 31 outputs the injection material;

[0080] The plastic injection control device comprises:

[0081] a reference plastic injection data acquisition module 41 for acquiring a reference plastic injection termination position;

[0082] a plastic injection position detection module 43 for detecting the plastic injection termination position of the screw 31;

[0083] a plastic injection control module 45 for receiving the plastic injection termination position sent by the plastic injection position detection module 43 and sending a third alarm control signal when the number of times that the difference between the plastic injection termination position and the reference plastic injection termination position is not within a preset second deviation range exceeds a third preset number of times;

[0084] a third alarm module 47 for receiving the third alarm control signal and sending a third alarm information;

[0085] The reference plastic injection data acquisition module 41, the plastic injection position detection module 43 and the third alarm module 47 are connected to the plastic injection control module 45.

[0086] Wherein, in the injection molding process, the screw 31 is rotated and advanced by the driving of the driving motor 35. When the driving motor 35 drives the screw 31 to rotate, the screw 31 pushes the injection material pellets from the hopper into the injection cylinder. The injection material pellets are gradually softened and melted by the shearing of the screw 31 and the heating of the heater in the injection cylinder. With the continuous rotation and advancement of the screw 31, the melted injection material is pushed by the screw 31 to the nozzle 311 and finally ejected.

[0087] Wherein, the reference ejection termination position refers to the position of the nozzle 311 of the screw 31 stopping ejection of the injection material into the mold cavity during the ejection process.

[0088] Wherein, the third preset number can be set artificially according to actual needs.

[0089] Wherein, the third alarm module 47 includes but is not limited to a display screen, a sounder, and an alarm light, the third alarm control signal includes but is not limited to a pop-up alarm control signal, an audio alarm control signal, and / or a light alarm control signal, and the third alarm information includes but is not limited to a pop-up alarm control signal, an audio alarm signal, and / or a light alarm signal. The pop-up alarm signal can be a subtitle pop-up display of text prompt content, the audio alarm signal can be a sound emitted by a buzzer, and the light alarm signal can be a color light emitted by an alarm light. The third alarm control signal is different from the first alarm control signal and the second alarm control signal, and the third alarm information is different from the first alarm information and the second alarm information.

[0090] Optionally, after the ejection control module 45 sends the third alarm control signal, it also accumulates the alarm duration, compares the accumulated alarm duration with a plurality of duration thresholds, and thereby displays different text prompt contents through the subtitle pop-up, emits different sounds through the buzzer, and / or emits different color lights through the alarm light to perform different degrees of alarm prompts when the alarm duration exceeds different duration thresholds.

[0091] Optionally, after the ejection control module 45 sends the third alarm control signal, it also accumulates the alarm duration, compares the accumulated alarm duration with a plurality of duration thresholds, and thereby displays different text prompt contents through the subtitle pop-up, emits different sounds through the buzzer, and / or emits different color lights through the alarm light to perform different degrees of alarm prompts when the alarm duration exceeds different duration thresholds.

[0092] In the embodiment of the present application, the injection control device comprises a reference injection data acquisition module 41, an injection position detection module 43, an injection control module 45 and a third alarm module 47. Specifically, during the injection process, the injection position detection module 43 detects the injection position of the screw 31 in real time and sends the injection position to the injection control module 45. The reference injection data acquisition module 41 sends the reference injection termination position to the injection control module 45. When the number of times that the difference between the injection termination position and the reference injection termination position is not within the preset second deviation range exceeds the third preset number, the injection control module 45 sends a third alarm control signal to the third alarm module 47. When the number of times that the difference between the injection termination position and the reference injection termination position is not within the preset second deviation range does not exceed the third preset number, the injection control module 45 does not send a third alarm control signal to the third alarm module 47. The third alarm module 47 sends a third alarm information according to the third alarm control signal.

[0093] The embodiment of the present application can send an alarm information to prompt the user that the injection device is abnormal when the injection termination position of the screw 31 deviates from the reference injection termination position by a large number of times, thereby avoiding the deviation of the injection termination position and the low quality of the mold.

[0094] In one embodiment, referring to Figure 6 , the reference injection data acquisition module 41 comprises:

[0095] a register 411 configured to receive the injection termination position detected by the injection position detection module 43 and store the injection termination position;

[0096] a third counter 412 configured to count the number of the injection termination positions stored in the register 411;

[0097] a fifth comparator 413 configured to compare the third value accumulated by the third counter 412 with a preset number and send a third signal when the third value is greater than or equal to the preset number;

[0098] a calculator 414 configured to receive the third signal, acquire the preset number of injection termination positions from the register 411, calculate the position average of the preset number of injection termination positions, and take the position average as the reference injection termination position;

[0099] The input end of the register 411 is connected with the injection position detection module 43, the output end of the register 411 is connected with the input end of the third counter 412, the output end of the third counter 412 is connected with the input end of the fifth comparator 413, the output end of the fifth comparator 413 is connected with the input end of the calculator 414, and the output end of the calculator 414 is connected with the injection control module 45.

[0100] The third signal is used to indicate that the third value accumulated by the third counter 412 is greater than or equal to the preset number.

[0101] In the embodiment of the present application, the reference injection data acquisition module comprises the register 411, the third counter 412, the fifth comparator 413 and the calculator 414. Specifically, the register 411 stores the injection termination position detected by the injection position detection module 43, the third counter 412 counts the number of the injection termination position of the register 411 to obtain the third value. The fifth comparator 413 compares the third value with the preset number, and when the third value is greater than or equal to the preset number, the third signal is sent. When the third value is less than the preset number, the third signal is not sent. The calculator 414 calculates the average value of the preset number of injection termination positions according to the third signal, and takes the average value as the reference injection termination position.

[0102] The reference injection termination position can be automatically and quickly obtained through the cooperation of the register 411, the third counter 412, the fifth comparator 413 and the calculator 414.

[0103] In one embodiment, referring to Figure 7 The injection control module 45 comprises:

[0104] The sixth comparator 451 is used to compare the difference between the injection termination position and the reference injection termination position with the preset second deviation range, and send the second signal when the difference between the injection termination position and the reference injection termination position is not in the preset second deviation range.

[0105] The fourth counter 452 is used to receive the second signal sent by the sixth comparator 451 and count.

[0106] The seventh comparator 453 is used to compare the fourth value accumulated by the fourth counter 452 with the third preset number of times, and send the third alarm control signal when the fourth value accumulated by the fourth counter 452 is greater than the third preset number of times.

[0107] The input end of the sixth comparator 451 is connected with the reference injection data acquisition module 41 and the injection position detection module 43 respectively, the output end of the sixth comparator 451 is connected with the input end of the fourth counter 452, the output end of the fourth counter 452 is connected with the input end of the seventh comparator 453, and the output end of the seventh comparator 453 is connected with the third alarm module 47.

[0108] The second signal is used to indicate that the difference between the injection termination position and the reference injection termination position is not in the preset second deviation range.

[0109] In the embodiment of the present application, the injection control module 45 comprises the sixth comparator 451, the fourth counter 452 and the seventh comparator 453. Specifically, when the difference between the injection termination position and the reference injection termination position is not in the preset second deviation range, the sixth comparator 451 sends the second signal. When the difference between the injection termination position and the reference injection termination position is in the preset second deviation range, the sixth comparator 451 does not send the second signal. The fourth counter 452 counts the number of times that the difference between the injection termination position and the reference injection termination position is not in the preset second deviation range, and obtains a fourth value. When the fourth value accumulated by the fourth counter 452 is greater than a third preset number of times, the seventh comparator 453 sends the third alarm control signal. When the fourth value accumulated by the fourth counter 452 is less than the third preset number of times, the seventh comparator 453 does not send the third alarm control signal.

[0110] Through the cooperation of the sixth comparator 451, the fourth counter 452 and the seventh comparator 453, the third alarm control signal can be sent when the injection termination position of the screw deviates from the reference injection termination position for many times, so as to prompt the user that the injection equipment is abnormal, and the deviation of the injection termination position is avoided, and the quality of the mold is improved.

[0111] In one embodiment, referring to Figure 8 The present application also provides an injection molding machine 100, which comprises the injection molding machine control system 200.

[0112] In the embodiment of the present application, by applying the injection molding machine control system 200 to the injection molding machine 100, the quality of the mold produced by the injection molding machine can be improved.

[0113] It should also be noted that the terms "comprising", "comprises" or other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0114] The above embodiments are only used to illustrate the present application, but not to limit it. Instead of the above, various modifications and changes can be made to the application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application shall fall into the scope of the claims of the application.

Claims

1. An injection molding machine control system characterized by, The injection molding machine control system comprises a clamping device and a clamping force control device; The clamping force control device comprises: a clamping force input module for receiving a user input of a reference clamping force; a clamping force detection module for detecting a clamping force of the clamping device; a clamping force control module for receiving the clamping force sent by the clamping force detection module, adjusting the clamping force of the clamping device when the difference between the clamping force and the reference clamping force is not within a preset first deviation range, and sending a first alarm control signal when the difference between the clamping force and the reference clamping force is still not within the preset first deviation range after the clamping force is adjusted for a continuous first preset number of times; a first alarm module for receiving the first alarm control signal and sending a first alarm information; The clamping force detection module is arranged on the clamping device; the clamping force input module, the clamping force detection module and the first alarm module are respectively connected with the clamping force control module.

2. The injection molding machine control system according to claim 1, wherein: The clamping force control module comprises: a first comparator for comparing the difference between the clamping force and the reference clamping force with the preset first deviation range and sending an adjustment signal when the difference between the clamping force and the reference clamping force is not within the preset first deviation range; a clamping force adjustment structure for receiving the adjustment signal sent by the first comparator and adjusting the clamping force of the clamping device; a first counter for receiving the adjustment signal sent by the first comparator and counting; a second comparator for comparing a first value accumulated by the first counter with the first preset number and sending a first alarm control signal when the first value accumulated by the first counter is greater than or equal to the first preset number; The input end of the first comparator is connected with the clamping force detection module, the output end of the first comparator is connected with the input end of the clamping force adjustment structure, the output end of the first comparator is also connected with the input end of the first counter, the output end of the first counter is connected with the input end of the second comparator, and the output end of the second comparator is connected with the first alarm module.

3. The injection molding machine control system according to claim 1, wherein: The clamping force control module is further configured to send a second alarm control signal when the number of times that the clamping force is greater than the maximum clamping force borne by the injection molding machine is greater than or equal to a second preset number; The injection molding machine control system further comprises a second alarm module for receiving the second alarm control signal and sending a second alarm information; The clamping force control module is connected with the second alarm module.

4. The injection molding machine control system according to claim 3, wherein: The clamping force control module further comprises: a third comparator for comparing the clamping force with the maximum clamping force borne by the injection molding machine and sending a first signal when the clamping force is greater than or equal to the maximum clamping force borne by the injection molding machine; a second counter for receiving the first signal and counting; a fourth comparator for comparing the second value accumulated by the second counter with the second preset number of times, and sending a second alarm control signal when the second value accumulated by the second counter is greater than the second preset number of times; an input terminal of the third comparator is connected with the mold locking force detection module, an output terminal of the third comparator is connected with an input terminal of the second counter, an output terminal of the second counter is connected with an input terminal of the fourth comparator, and an output terminal of the fourth comparator is connected with the second alarm module.

5. The injection molding machine control system according to any one of claims 1 to 4, characterized in that: the injection molding machine control system further comprises a plastic injection device and a plastic injection control device; the plastic injection device comprises a screw, a rotating shaft and a driving motor, a nozzle is arranged on the screw, one end of the rotating shaft is connected with the screw, and the other end of the rotating shaft is connected with the driving motor; the driving motor drives the rotating shaft to move the screw, so that the nozzle of the screw outputs the injection material; the plastic injection control device comprises: a reference plastic injection data acquisition module for acquiring a reference plastic injection termination position; a plastic injection position detection module for detecting a plastic injection termination position of the screw; a plastic injection control module for receiving the plastic injection termination position sent by the plastic injection position detection module, and sending a third alarm control signal when the number of times that the difference between the plastic injection termination position and the reference plastic injection termination position is not within a preset second deviation range exceeds a third preset number of times; a third alarm module for receiving the third alarm control signal and sending a third alarm information; the reference plastic injection data acquisition module, the plastic injection position detection module and the third alarm module are connected with the plastic injection control module.

6. The injection molding machine control system according to claim 5, characterized in that: the reference plastic injection data acquisition module comprises: a register for receiving the plastic injection termination position detected by the plastic injection position detection module and storing the plastic injection termination position; a third counter for counting the number of the plastic injection termination positions stored in the register; a fifth comparator for comparing a third value accumulated by the third counter with a preset number, and sending a third signal when the third value is greater than or equal to the preset number; a calculator for receiving the third signal, acquiring the preset number of plastic injection termination positions from the register, calculating a position average value of the preset number of plastic injection termination positions, and taking the position average value as the reference plastic injection termination position; an input terminal of the register is connected with the plastic injection position detection module, an output terminal of the register is connected with an input terminal of the third counter, an output terminal of the third counter is connected with an input terminal of the fifth comparator, an output terminal of the fifth comparator is connected with an input terminal of the calculator, and an output terminal of the calculator is connected with the plastic injection control module.

7. The injection molding machine control system according to claim 5, characterized in that: the plastic injection control module comprises: a sixth comparator configured to compare the difference between the injection termination position and the reference injection termination position with a preset second deviation range, and output a second signal when the difference between the injection termination position and the reference injection termination position is not within the preset second deviation range; a fourth counter configured to receive the second signal output by the sixth comparator and count; a seventh comparator configured to compare a third number accumulated by the fourth counter with a third preset number, and output a third alarm control signal when the third number accumulated by the fourth counter is greater than the third preset number; the input terminals of the sixth comparator are connected to the reference injection data acquisition module and the injection position detection module, the output terminal of the sixth comparator is connected to the input terminal of the fourth counter, the output terminal of the fourth counter is connected to the input terminal of the seventh comparator, and the output terminal of the seventh comparator is connected to the third alarm module.

8. The injection molding machine control system according to any one of claims 1 to 4, wherein: the mold locking device comprises a fixed mold plate, a movable mold plate, a tail plate, a tie rod, a mold locking cylinder, a connecting rod, an oil pump, an oil tank, a first oil pipe and a second oil pipe, one end of the tie rod is connected to the fixed mold plate, the other end of the tie rod is connected to the tail plate, the movable mold plate is slidably arranged on the tie rod, the mold locking cylinder and the connecting rod are arranged between the movable mold plate and the tail plate, one end of the connecting rod is connected to the mold locking cylinder, the other end of the connecting rod is connected to the movable mold plate, the oil inlet of the oil pump is connected to the outlet of the oil tank through the first oil pipe, the oil outlet of the oil pump is connected to the mold locking cylinder through the second oil pipe, the oil pump delivers hydraulic oil in the oil tank to the mold locking cylinder, the mold locking cylinder drives the connecting rod to move the movable mold plate along the axial direction of the tie rod to generate a mold locking force between the fixed mold plate and the movable mold plate, and the mold locking force is used to clamp the injection material injected into the fixed mold plate and the movable mold plate; the mold locking force detection module comprises a force sensor configured to detect the mold locking force between the fixed mold plate and the movable mold plate; the mold locking force control module comprises a mold adjusting nut and a mold adjusting motor, the mold adjusting nut is arranged on the tie rod, and the mold adjusting motor is arranged on the tail plate, the mold adjusting motor drives the mold adjusting nut to move along the axial direction of the tie rod to change the mold thickness between the fixed mold plate and the movable mold plate, so as to adjust the mold locking force.

9. An injection molding machine characterized by, An injection molding machine control system according to any one of claims 1 to 8.

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