Injection molding device with mold recognition and detection functions

Abstract

The utility model discloses an injection molding device with mold identification and detection functions, which relates to the technical field of injection molding equipment and comprises an injection molding box, a controller is arranged on the right side of the injection molding box, a fixed mold is fixedly connected to the right end of the inner side of the injection molding box, a mounting groove is formed in the lower end of the fixed mold, and a pressure sensor is fixedly connected into the mounting groove. The pressure sensor is electrically connected with the controller, the receiving end of the pressure sensor is fixedly connected with a pressing plate, the upper end of the pressing plate is flush with the bottom end of the inner side of the fixed mold, an injection molding hole is formed in the left end of the fixed mold in a penetrating mode, and a pressure sensor is arranged on the upper portion of the left end of the fixed mold and electrically connected with the controller. According to the scheme, whether the mold cavity is filled with the material or not can be judged by monitoring the pressure peak value on the pressing plate through the pressure sensor, and compared with a mode of judging whether the mold cavity is filled with the material or not through an overflow groove, damage to the device due to the fact that overflowing plastic raw materials drop on the device is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding equipment, in particular to an injection molding device with a mold identification and detection function. Background Technique

[0002] An injection molding machine, also known as an injection molding machine or an injection machine, is the main molding equipment for making various shaped plastic products from thermoplastic or thermosetting plastics using plastic molding dies. It is divided into vertical, horizontal, and all-electric types. The injection molding machine can heat the plastic, apply high pressure to the molten plastic, and inject it to fill the mold cavity.

[0003] In the prior art, the fixed mold and the moving mold of the injection molding die are identified by reading an electronic tag. After the fixed mold and the moving mold are matched, they are installed in the injection molding machine for injection molding work. If an error occurs when reading the electronic tag to identify the fixed mold and the moving mold, the injection molding machine will still perform subsequent injection molding work on the injection molding die, which is likely to cause safety hazards. At the same time, for the sealing performance of the two molds after clamping, the existing devices mostly judge by manual visual inspection or manual inspection, with low efficiency and low accuracy. And during injection molding, it is mostly observed whether the plastic completely fills the inside of the mold by the overflow of the material from the overflow tank. Since the overflowing material itself has a certain high temperature, it will cause a certain degree of damage to the device when dripping onto the device, thereby reducing the service life of the device. Therefore, an injection molding device with a mold identification and detection function is proposed to solve the problems mentioned above. Summary of the Utility Model

[0004] To solve the above technical problems, an injection molding device with a mold identification and detection function is provided. This technical solution solves the problems in the above background technique that in the prior art, the fixed mold and the moving mold of the injection molding die are identified by reading an electronic tag. After the fixed mold and the moving mold are matched, they are installed in the injection molding machine for injection molding work. If an error occurs when reading the electronic tag to identify the fixed mold and the moving mold, the injection molding machine will still perform subsequent injection molding work on the injection molding die, which is likely to cause safety hazards. For the sealing performance of the two molds after clamping, the existing devices mostly judge by manual visual inspection or manual inspection, with low efficiency and low accuracy. And during injection molding, it is mostly observed whether the plastic completely fills the inside of the mold by the overflow of the material from the overflow tank. Since the overflowing material itself has a certain high temperature, it will cause a certain degree of damage to the device when dripping onto the device, thereby reducing the service life of the device.

[0005] To achieve the above objectives, the technical solution adopted by the utility model is as follows:

[0006] An injection molding device with a mold recognition and detection function, including an injection molding box. A controller is arranged on the right side of the injection molding box. The right end inside the injection molding box is fixedly connected with a fixed mold. An installation groove is opened at the lower end of the fixed mold. A pressure sensor is fixedly connected inside the installation groove. The pressure sensor is electrically connected to the controller. The receiving end of the pressure sensor is fixedly connected with a pressing plate. The upper end of the pressing plate is flush with the inner bottom end of the fixed mold. An injection hole is penetrated and opened at the right end of the fixed mold. A pressure sensor is arranged at the upper part of the left end of the fixed mold. The pressure sensor is electrically connected to the controller. Docking holes are opened at the four corners of the left end of the fixed mold. A return spring is fixedly connected inside the docking holes. The other end of the return spring is fixedly connected with a sliding block. The sliding block is slidably connected inside the docking holes. A touch switch is arranged at the left end of the sliding block. The touch switch is electrically connected to the controller.

[0007] Preferably, a hydraulic cylinder is fixedly installed at the left end of the injection molding box. The hydraulic cylinder is electrically connected to the controller. The output end of the hydraulic cylinder penetrates the left end of the injection molding box and is fixedly connected with a movable plate. Four uniformly distributed first telescopic rods are fixedly connected between the movable plate and the left inner wall of the injection molding box.

[0008] Preferably, second telescopic rods are fixedly connected at the four corners of the right end of the movable plate. The other ends of the second telescopic rods are fixedly connected with a movable mold. A damping spring is sleeved on the outer surface of the second telescopic rods.

[0009] Preferably, a plug rod is fixedly connected at the corresponding position of the right end of the movable mold and the docking hole.

[0010] Preferably, a warning lamp is arranged at the upper end of the injection molding box. The warning lamp is electrically connected to the controller.

[0011] Preferably, an injection molding pipeline is fixedly connected at the right end of the injection molding box. A feed hopper is fixedly connected to the outer surface of the injection molding pipeline. A motor is fixedly installed at the right end of the injection molding pipeline. The motor is electrically connected to the controller. The output end of the motor penetrates the right end of the injection molding pipeline and is fixedly connected with a conveying shaft. The left end of the injection molding pipeline is communicated with the injection hole.

[0012] Preferably, the controller includes a central processing module, a signal processing module and a control unit.

[0013] The beneficial effects of the present utility model compared with the prior art are:

[0014] This solution proposes an injection molding device with a mold recognition and detection function. At the inner bottom end of the fixed mold, there is a pressure plate and a pressure sensor. During injection molding, as the plastic raw material is injected into the mold cavity, the pressure inside the mold cavity gradually increases, which will squeeze the pressure plate, and then cause a change in the pressure applied to the pressure plate. The pressure sensor can monitor the pressure change on the pressure plate during the injection molding process. When the mold cavity is completely filled, the pressure will reach the set value. By monitoring the pressure peak, it can be judged whether the material fills the mold cavity. Compared with the method of judging whether the material fills the mold cavity through the overflow groove, it reduces the damage to the device caused by the dripping of the overflowing plastic raw material on the device.

[0015] In this solution, there is a touch switch and a pressure sensor. By pushing the movable plate towards the fixed mold by the hydraulic cylinder, the movable mold can be driven to approach the fixed mold, so that the insertion rod on the movable mold can be inserted into the docking hole on the fixed mold. As the movable mold gets closer and closer, the insertion rod will contact the touch switch, and at the same time, the movable mold contacts the fixed mold. At this time, the pressure sensor will measure the pressure from the movable mold and feedback it to the controller. When the pressure reaches the preset value, the movable mold and the fixed mold are completely fitted. At this time, the controller stops the movement of the hydraulic cylinder through the internal control unit. By the touch switch being pressed and the monitoring data of the pressure sensor reaching the preset value, it can identify whether the movable mold and the fixed mold are fitted, which can ensure the sealing of the mold and improve the accuracy during injection molding. Brief Description of the Drawings

[0016] Figure 1 It is a structural schematic diagram of the present utility model;

[0017] Figure 2 It is a structural schematic diagram of the fixed mold in the present utility model;

[0018] Figure 3 It is a structural schematic diagram of the installation groove in the present utility model;

[0019] Figure 4 It is a structural schematic diagram of the docking hole in the present utility model;

[0020] Figure 5 It is a structural schematic diagram of the injection molding pipeline in the present utility model.

[0021] The reference numerals in the figure are:

[0022] 1. Injection molding box; 2. Controller; 3. Fixed mold; 4. Installation groove; 5. Pressure sensor; 6. Pressure plate; 7. Injection hole; 8. Pressure sensor; 9. Docking hole; 10. Return spring; 11. Sliding block; 12. Touch switch; 13. Hydraulic cylinder; 14. Movable plate; 15. First telescopic rod; 16. Second telescopic rod; 17. Movable mold; 18. Damping spring; 19. Insertion rod; 20. Warning lamp; 21. Injection molding pipeline; 22. Feed hopper; 23. Motor; 24. Conveyor shaft. Detailed implementation mode

[0023] The following description is used to disclose the present utility model so that those skilled in the art can implement the present utility model. The preferred embodiments in the following description are only examples, and those skilled in the art can think of other obvious variations.

[0024] Referring to Figure 1 、 Figure 2 and Figure 3 As shown, an injection molding device with a mold identification and detection function includes an injection molding box 1. A controller 2 is arranged on the right side of the injection molding box 1. The controller 2 includes a central processing module, a signal processing module and a control unit. A fixed mold 3 is fixedly connected to the right end inside the injection molding box 1. An installation groove 4 is opened at the lower end of the fixed mold 3. A pressure sensor 5 is fixedly connected inside the installation groove 4. The pressure sensor 5 is electrically connected to the controller 2. The model of the pressure sensor 5 can be a pressure sensor of PX2AN1XX100PSAAX. A pressing plate 6 is fixedly connected to the receiving end of the pressure sensor 5. The upper end of the pressing plate 6 is flush with the inner bottom end of the fixed mold 3. The pressing plate 6 is made of ceramic material. The ceramic material has low thermal conductivity and can effectively isolate heat, protect the pressure sensor 5, and prevent the pressure sensor 5 from being damaged by high temperature and reducing its service life.

[0025] Furthermore, an injection hole 7 is penetrated and opened at the right end of the fixed mold 3. An injection pipeline 21 is fixedly connected to the right end of the injection molding box 1. A feed hopper 22 is fixedly connected to the outer surface of the injection pipeline 21. A motor 23 is fixedly installed at the right end of the injection pipeline 21. The motor 23 is electrically connected to the controller 2. The output end of the motor 23 penetrates the right end of the injection pipeline 21 and is fixedly connected to a conveying shaft 24. The left end of the injection pipeline 21 is communicated with the injection hole 7.

[0026] Furthermore, during injection molding, the heated plastic is injected into the interior of the injection pipeline 21 through the feed hopper 22. The motor 23 drives the conveying shaft 24 to rotate, and the plastic raw material inside the injection pipeline 21 is injected into the inner cavity of the mold through the injection hole 7. As the plastic raw material is continuously injected, the pressure inside the mold cavity will gradually increase, thereby squeezing the pressing plate 6, causing the pressure applied to the pressing plate 6 to change. At this time, the pressure sensor 5 can monitor the pressure change on the pressing plate 6 during the injection molding process and feed the data back to the controller 2. The central processing module of the controller 2 will compare the fed-back pressure value with the pre-set pressure value. When the mold cavity is completely filled, the pressure reaches the pre-set value. At this time, the controller 2 will interrupt the operation of the motor 23 through the control unit, thereby stopping the conveying of the plastic raw material.

[0027] Referring to Figure 1 、 Figure 2 and Figure 4As shown in the figure, a pressure sensor 8 is provided at the upper left end of the fixed mold 3. The pressure sensor 8 can be a pressure sensor with a model number of: TJE-1KPSI-C-4-P. The pressure sensor 8 is electrically connected to the controller 2. Docking holes 9 are provided at the four corners of the left end of the fixed mold 3. A return spring 10 is fixedly connected inside the docking hole 9. The other end of the return spring 10 is fixedly connected to a sliding block 11. The sliding block 11 is slidably connected inside the docking hole 9. A touch switch 12 is provided at the left end of the sliding block 11. The touch switch 12 is electrically connected to the controller 2.

[0028] Furthermore, a hydraulic cylinder 13 is fixedly installed at the left end of the injection molding box 1. The hydraulic cylinder 13 is electrically connected to the controller 2. The output end of the hydraulic cylinder 13 penetrates through the left end of the injection molding box 1 and is fixedly connected to a movable plate 14. Four uniformly distributed first telescopic rods 15 are fixedly connected between the movable plate 14 and the left inner wall of the injection molding box 1. The first telescopic rods 15 can guide the movement of the movable plate 14, making the movable plate 14 more stable during the movement process.

[0029] Furthermore, second telescopic rods 16 are fixedly connected to the four corners of the right end of the movable plate 14. The other end of the second telescopic rod 16 is fixedly connected to a movable mold 17. A damping spring 18 is sleeved on the outer surface of the second telescopic rod 16. The damping spring 18 can play a buffering role when the fixed mold 3 and the movable mold 17 are docked, avoiding damage or wear caused by instantaneous impact between the fixed mold 3 and the movable mold 17. A plug rod 19 is fixedly connected to the corresponding position of the right end of the movable mold 17 and the docking hole 9.

[0030] Furthermore, a warning light 20 is provided at the upper end of the injection molding box 1. The warning light 20 is electrically connected to the controller 2.

[0031] Furthermore, when the fixed mold 3 and the movable mold 17 are docked, the hydraulic cylinder 13 is used to push the movable plate 14 to move in the direction of the fixed mold 3, so that the movable mold 17 approaches the fixed mold 3. During the docking process of the fixed mold 3 and the movable mold 17, the plug rod 19 on the movable mold 17 will be inserted into the docking hole 9 on the fixed mold 3. As the movable mold 17 gets closer and closer, the plug rod 19 will contact the touch switch 12. When the four touch switches 12 are pressed simultaneously, the signal processing module of the controller 2 will send an electrical signal to the central processing module. At the same time, the movable mold 17 contacts the fixed mold 3. At this time, the pressure sensor 8 will receive the pressure from the movable mold 17. The pressure sensor 8 will measure the magnitude of the pressure and feedback the data to the controller 2. The central processing module of the controller 2 will compare the feedback pressure value with the preset pressure value. When the pressure reaches the preset value, the movable mold 17 and the fixed mold 3 are completely fitted. At this time, the controller 2 will stop the movement of the hydraulic cylinder 13 through the control unit.

[0032] Further, only when the touch switch 12 is pressed and the monitoring data of the pressure sensor 8 reaches the preset value, and both meet the requirements simultaneously, will it be determined that the moving mold 17 and the fixed mold 3 are completely aligned. When the moving mold 17 and the fixed mold 3 are not completely aligned during the injection molding operation, the warning light 20 will flash to prompt the staff to stop the operation.

[0033] Working principle: During use, the hydraulic cylinder 13 is used to push the movable plate 14, causing the moving mold 17 to move towards the fixed mold 3. During the movement, the insertion rod 19 on the moving mold 17 is inserted into the docking hole 9 on the fixed mold 3. When the moving mold 17 continues to approach the fixed mold 3, the insertion rod 19 will touch the four touch switches 12, and the four touch switches 12 are pressed simultaneously. The signal processing module of the controller 2 sends an electrical signal to the central processing module. When the moving mold 17 and the fixed mold 3 are in full contact, the pressure sensor 8 will monitor the pressure from the moving mold 17 and feed back the pressure data to the controller 2. The central processing module of the controller 2 will compare the actual pressure value with the preset pressure value. When the pressure reaches the preset value, the moving mold 17 and the fixed mold 3 are completely aligned, and the controller 2 stops the movement of the hydraulic cylinder 13. Then, the heated plastic material is injected into the injection molding pipeline 21 through the feed hopper 22. The motor 23 drives the conveying shaft 24 to rotate, and the plastic raw material inside the injection molding pipeline 21 is injected into the inner cavity of the mold through the injection hole 7. As the plastic raw material is continuously injected, the pressure inside the mold cavity will gradually increase, and the pressure on the pressure plate 6 will also change. At this time, the pressure sensor 5 can monitor the pressure change on the pressure plate 6 during the injection molding process and feed back the data to the controller 2. The central processing module of the controller 2 will compare the fed-back pressure value with the pre-set pressure value. When the mold cavity is completely filled and the pressure reaches the pre-set value, the controller 2 will interrupt the operation of the motor 23 through the control unit, thereby stopping the conveying of the plastic raw material. After that, wait for the raw material inside the mold cavity to cool sufficiently before performing the demolding operation.

[0034] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. An injection molding device with mold identification and detection function, characterized in that: The invention comprises an injection molding box (1), wherein a controller (2) is arranged on the right side of the injection molding box (1), a fixed mold (3) is fixedly connected to the right inner end of the injection molding box (1), a mounting groove (4) is provided at the lower end of the fixed mold (3), a pressure sensor (5) is fixedly connected inside the mounting groove (4), the pressure sensor (5) is electrically connected to the controller (2), a receiving end of the pressure sensor (5) is fixedly connected to a pressure plate (6), the upper end of the pressure plate (6) is flush with the inner bottom end of the fixed mold (3), and an injection hole (7) is provided through the right end of the fixed mold (3). ), a pressure sensor (8) is arranged at the upper left end of the fixed mold (3), the pressure sensor (8) is electrically connected to the controller (2), docking holes (9) are opened at the four corners of the left end of the fixed mold (3), a return spring (10) is fixedly connected inside the docking hole (9), the other end of the return spring (10) is fixedly connected to a sliding block (11), the sliding block (11) is slidably connected to the inside of the docking hole (9), a touch switch (12) is arranged at the left end of the sliding block (11), and the touch switch (12) is electrically connected to the controller (2).

2. The injection molding device with mold identification and detection function according to claim 1, characterized in that: A hydraulic cylinder (13) is fixedly mounted on the left end of the injection molding box (1), the hydraulic cylinder (13) is electrically connected to the controller (2), the output end of the hydraulic cylinder (13) passes through the left end of the injection molding box (1) and is fixedly connected to a movable plate (14), and four evenly distributed first telescopic rods (15) are fixedly connected between the movable plate (14) and the left inner wall of the injection molding box (1).

3. The injection molding device with mold identification and detection function according to claim 2, characterized in that: The four corners of the right end of the movable plate (14) are fixedly connected to a second telescopic rod (16), the other end of the second telescopic rod (16) is fixedly connected to a movable mold (17), and a damping spring (18) is sleeved on the outer surface of the second telescopic rod (16).

4. The injection molding device with mold identification and detection function according to claim 3, characterized in that: An insert rod (19) is fixedly connected at the right end of the movable mold (17) and at a position corresponding to the docking hole (9).

5. The injection molding device with mold identification and detection function according to claim 1, characterized in that: A warning light (20) is provided at the upper end of the injection molding box (1), and the warning light (20) is electrically connected to the controller (2).

6. The injection molding device with mold identification and detection function according to claim 1, characterized in that: The right end of the injection molding box (1) is fixedly connected to an injection molding pipe (21), the outer surface of the injection molding pipe (21) is fixedly connected to a feed hopper (22), the right end of the injection molding pipe (21) is fixedly installed with a motor (23), the motor (23) is electrically connected to the controller (2), the output end of the motor (23) passes through the right end of the injection molding pipe (21) and is fixedly connected to a conveying shaft (24), and the left end of the injection molding pipe (21) is connected to the injection molding hole (7).

7. The injection molding device with mold identification and detection function according to claim 1, characterized in that: The controller (2) comprises a central processing module, a signal processing module and a control unit.

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