Mold opening and closing mechanism for injection molding of automobile photomask

Abstract

The utility model relates to a mold opening and closing mechanism for automobile photomask injection molding, which belongs to the technical field of automobile photomask production and comprises a mounting bottom plate, a control vertical plate and a mounting vertical plate. Four guide limiting rods are fixedly installed between the control vertical plate and the installation vertical plate, a movable base is installed on the surfaces of the guide limiting rods in a sliding mode, a pressure detection assembly is arranged between the installation vertical plate and the movable base, and the pressure detection assembly comprises a pressure installation rod fixedly installed on one side of the movable base. According to the mold opening and closing mechanism for injection molding of the automobile photomask, the pressure detection assembly is arranged between the mounting vertical plate and the movable base, the pressure sensor is pressed through the pressing plate at one end of the movable base during mold closing, the mold closing strength is detected according to the pressure borne by the pressure sensor during mold closing, and the situation that the locking strength is insufficient is prevented.

Description

Technical Field

[0001] This utility model relates to the field of automotive photomask production technology, specifically to an opening and closing mold mechanism for automotive photomask injection molding. Background Technology

[0002] A car headlight cover is a component installed inside the headlight to block unnecessary parts of the headlight beam, allowing the light to be better focused and projected, preventing light divergence, and improving the light focusing effect; it also prevents oncoming drivers from being dazzled when driving at night; prevents accidental damage to the lens and accidental contact with the lens surface; and protects the lens from wind, sand, rain, snow, etc.

[0003] In the injection molding process of automotive photomasks, a mold opening and closing mechanism is required. Utility model patent CN212736940U discloses a rapid mold opening and closing mechanism for injection molds, including a main body. A motor is fixedly installed at the top of the main body, and a first roller is fixedly installed at the output end of the motor. Two power belts are fitted onto the first roller, and a second roller is fitted onto the other end of each of the two power belts. This utility model features an automatic ejection structure. When the upper mold plate is pressed down, the ejector rod first contacts the lower mold plate and retracts, causing the ejector block to block the ejection groove. When the upper mold plate moves upward, a return spring resets the ejector rod, and the ejector block ejects the internal product, preventing it from sticking to the upper mold plate and affecting product quality. By providing an ejector block that can tightly fit with the ejection groove, the quality of the injection-molded product is prevented from deteriorating due to the ejection groove, thus affecting sales.

[0004] However, the locking force of the quick opening and closing mechanism of this injection mold is controlled by a hydraulic cylinder. When the hydraulic cylinder malfunctions, it can easily lead to insufficient closing force, affecting production quality. Therefore, an opening and closing mechanism for automotive photomask injection molding is proposed to solve the problems mentioned above. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an opening and closing mold mechanism for automotive photomask injection molding. It has advantages such as convenient detection of the locking force during mold opening and closing, and solves the problem that in common injection mold quick opening and closing mechanisms, the locking force is controlled by a hydraulic cylinder. When the hydraulic cylinder malfunctions, it can easily lead to insufficient mold closing force, affecting production quality.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An opening and closing mold mechanism for automotive photomask injection molding includes a mounting base plate, a control plate fixedly mounted on the top of the mounting base plate, an mounting plate fixedly mounted on the top of the mounting base plate, four guide limit rods fixedly mounted between the control plate and the mounting plate, movable bases slidably mounted on the surface of the guide limit rods, and a pressure detection component provided between the mounting plate and the movable base.

[0008] The pressure detection assembly includes a pressure mounting rod fixedly installed on one side of the movable base, a pressure plate fixedly installed at one end of the pressure mounting rod, and a pressure sensor aligned with the pressure mounting rod fixedly installed on one side of the mounting plate.

[0009] The pressure mounting rod includes a pressure telescopic rod fixedly installed on one side of the movable base, and a pressure spring is sleeved on the surface of the pressure telescopic rod.

[0010] Furthermore, a controller is fixedly installed on one side of the control plate, and the controller is electrically connected to the pressure sensor. A linear bearing is fixedly installed on one side of the movable base, and the guide limit rod slides through the linear bearing.

[0011] Furthermore, a fixed mold is fixedly installed on one side of the mounting plate, and a movable mold adapted to the fixed mold is fixedly installed on one side of the movable base.

[0012] Furthermore, a detection mounting rod is fixedly installed on one side of the movable base, and a photoelectric switch is fixedly installed at one end of the detection mounting rod, with the detection surface of the photoelectric switch facing the direction of the movable mold.

[0013] Furthermore, a support rod is fixedly installed on one side of the mounting plate, and a support end plate is fixedly installed on one end of the support rod, with the support end plate aligned with one side of the fixed mold.

[0014] Furthermore, the detection mounting rod includes a detection telescopic rod fixedly installed on one side of the movable base, and a detection spring is sleeved on the surface of the detection telescopic rod.

[0015] Furthermore, a mold-closing hydraulic cylinder is fixedly installed on one side of the control plate, and the movable end of the mold-closing hydraulic cylinder is fixedly connected to one side of the movable base.

[0016] Furthermore, a mounting bracket is fixedly installed on the top of the mounting base plate, and an injection molding machine is fixedly installed on the top of the mounting bracket. The output end of the injection molding machine is connected to the input end of the fixed mold, and cooling interfaces are fixedly installed on the sides of the fixed mold and the movable mold.

[0017] Compared with the prior art, this utility model provides an opening and closing mold mechanism for automotive photomask injection molding, which has the following beneficial effects:

[0018] 1. This mold opening and closing mechanism for automotive photomask injection molding uses a pressure detection component installed between the mounting plate and the movable base. During mold closing, the pressure plate at one end of the movable base presses against the pressure sensor. Based on the pressure received by the pressure sensor during mold closing, the mold closing force is detected, preventing insufficient locking force. This solves the problem of insufficient locking force in common injection mold quick opening and closing mechanisms, where the locking force is controlled by a hydraulic cylinder. When the hydraulic cylinder malfunctions, it can easily lead to insufficient mold closing force, affecting production quality.

[0019] 2. The mold opening and closing mechanism for automotive photomask injection molding uses a detection mounting rod on one side of the movable base and a photoelectric switch at one end of the detection mounting rod to detect the danger zone between the fixed mold and the movable mold. This prevents foreign objects from entering the danger zone between the fixed mold and the movable mold when the mold is closed. When an operator or foreign object enters the danger zone of the mold opening and closing, the mold stops moving to prevent pinching or collision accidents. Attached Figure Description

[0020] Figure 1 This is a front view of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the mold assembly structure of this utility model;

[0022] Figure 3 This is a front view of the pressure mounting rod and the detection mounting rod of this utility model;

[0023] Figure 4 This is a three-dimensional view of the testing and installation rod of this utility model.

[0024] In the diagram: 1. Mounting base plate; 2. Control plate; 3. Mounting plate; 4. Guide limit rod; 5. Movable base; 51. Linear bearing; 6. Pressure mounting rod; 61. Pressure telescopic rod; 62. Pressure spring; 7. Pressure plate; 8. Pressure sensor; 9. Controller; 10. Fixed mold; 11. Movable mold; 12. Detection mounting rod; 121. Detection telescopic rod; 122. Detection spring; 13. Photoelectric switch; 14. Support rod; 15. Support end plate; 16. Mold closing hydraulic cylinder; 17. Mounting bracket; 18. Injection molding machine; 19. Cooling interface. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1 to 4 This embodiment of an opening and closing mold mechanism for automotive photomask injection molding includes a mounting base plate 1, a control plate 2 fixedly mounted on the top of the mounting base plate 1, a mounting plate 3 fixedly mounted on the top of the mounting base plate 1, four guide limit rods 4 fixedly mounted between the control plate 2 and the mounting plate 3, a movable base 5 slidably mounted on the surface of the guide limit rods 4, and a pressure detection component provided between the mounting plate 3 and the movable base 5.

[0027] The pressure detection component includes a pressure mounting rod 6 fixedly installed on one side of the movable base 5, a pressure plate 7 fixedly installed at one end of the pressure mounting rod 6, and a pressure sensor 8 aligned with the pressure mounting rod 6 fixedly installed on one side of the mounting plate 3.

[0028] Secondly, the pressure mounting rod 6 includes a pressure telescopic rod 61 fixedly installed on one side of the movable base 5, and a pressure spring 62 is sleeved on the surface of the pressure telescopic rod 61.

[0029] Specifically, when the movable base 5 moves toward the mounting plate 3, the pressure mounting rod 6 moves and drives the pressure plate 7 to press against the pressure sensor 8. The clamping force is calculated based on the value detected by the pressure sensor 8. For example, the value displayed by the pressure sensor 8 when the mold is fully closed is used as a reference. If the value is lower than this value, the clamping force is insufficient.

[0030] Please see Figure 1 and Figure 2 In this embodiment, a controller 9 is fixedly installed on one side of the control plate 2. The controller 9 is electrically connected to the pressure sensor 8. A linear bearing 51 is fixedly installed on one side of the movable base 5. The guide limit rod 4 slides through the linear bearing 51.

[0031] Among them, a fixed mold 10 is fixedly installed on one side of the mounting plate 3, and a movable mold 11 adapted to the fixed mold 10 is fixedly installed on one side of the movable base 5.

[0032] Please see Figure 3 and Figure 4 In this embodiment, a detection mounting rod 12 is fixedly installed on one side of the movable base 5, and a photoelectric switch 13 is fixedly installed on one end of the detection mounting rod 12. The detection surface of the photoelectric switch 13 faces the movable mold 11. When the mold is closed, the photoelectric switch 13 detects foreign objects between the fixed mold 10 and the movable mold 11. When a foreign object appears in the danger zone between the fixed mold 10 and the movable mold 11, the photoelectric switch 13 is triggered.

[0033] A support rod 14 is fixedly installed on one side of the mounting plate 3, and a support end plate 15 is fixedly installed on one end of the support rod 14. The support end plate 15 is aligned with one side of the fixed mold 10. The support end plate 15 limits the photoelectric switch 13 to prevent it from moving excessively.

[0034] Secondly, the detection mounting rod 12 includes a detection telescopic rod 121 fixedly installed on one side of the movable base 5, and a detection spring 122 is sleeved on the surface of the detection telescopic rod 121.

[0035] Please see Figure 1 and Figure 2 In this embodiment, a mold-closing hydraulic cylinder 16 is fixedly installed on one side of the control plate 2, and the movable end of the mold-closing hydraulic cylinder 16 is fixedly connected to one side of the movable base 5.

[0036] The mounting base 1 is fixedly mounted with a mounting bracket 17, and an injection molding machine 18 is fixedly mounted with the top of the mounting bracket 17. The output end of the injection molding machine 18 is connected to the input end of the fixed mold 10. Cooling interfaces 19 are fixedly mounted on the sides of the fixed mold 10 and the movable mold 11.

[0037] Specifically, the controller 9 receives the value from the pressure sensor 8 and the signal from the photoelectric switch 13. When the photoelectric switch 13 is triggered, the controller 9 controls the mold closing hydraulic cylinder 16 to stop to prevent personnel injury.

[0038] The working principle of the above embodiment is as follows: when the movable base 5 moves to the mounting plate 3, the pressure mounting rod 6 moves and drives the pressure plate 7 to press against the pressure sensor 8. The clamping force is calculated by the value detected by the pressure sensor 8. When an abnormality occurs, it is convenient for staff to repair in time.

[0039] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods, and any method that achieves the desired beneficial effect can be implemented. Furthermore, all electrical components in this embodiment are electrically connected to the main controller and power supply. The main controller can be a conventional, known device such as a computer that performs control functions. Those skilled in the art can control the electrical components through simple programming, and the existing disclosed power connection technologies are common knowledge in the field. Therefore, this embodiment will not elaborate further on their specific structural composition and working principles.

[0040] It should be noted that the orientations or positional relationships indicated herein are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the purpose of facilitating the description of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mold opening and closing mechanism for injection molding of automotive photomasks, comprising a mounting base plate, characterized in that: A control plate is fixedly installed on the top of the mounting base plate, and an installation plate is fixedly installed on the top of the mounting base plate. Four guide limit rods are fixedly installed between the control plate and the installation plate. Movable bases are slidably installed on the surface of the guide limit rods. A pressure detection component is provided between the installation plate and the movable base. The pressure detection assembly includes a pressure mounting rod fixedly installed on one side of the movable base, a pressure plate fixedly installed at one end of the pressure mounting rod, and a pressure sensor aligned with the pressure mounting rod fixedly installed on one side of the mounting plate. The pressure mounting rod includes a pressure telescopic rod fixedly installed on one side of the movable base, and a pressure spring is sleeved on the surface of the pressure telescopic rod.

2. The mold opening and closing mechanism for automotive photomask injection molding according to claim 1, characterized in that: A controller is fixedly installed on one side of the control plate. The controller is electrically connected to the pressure sensor. A linear bearing is fixedly installed on one side of the movable base. The guide limit rod slides through the linear bearing.

3. The mold opening and closing mechanism for automotive photomask injection molding according to claim 1, characterized in that: A fixed mold is fixedly installed on one side of the mounting plate, and a movable mold adapted to the fixed mold is fixedly installed on one side of the movable base.

4. The mold opening and closing mechanism for automotive photomask injection molding according to claim 3, characterized in that: A detection mounting rod is fixedly installed on one side of the movable base, and a photoelectric switch is fixedly installed at one end of the detection mounting rod, with the detection surface of the photoelectric switch facing the direction of the movable mold.

5. The mold opening and closing mechanism for automotive photomask injection molding according to claim 4, characterized in that: A support rod is fixedly installed on one side of the mounting plate, and a support end plate is fixedly installed on one end of the support rod, with the support end plate aligned with one side of the fixed mold.

6. The mold opening and closing mechanism for automotive photomask injection molding according to claim 5, characterized in that: The detection mounting rod includes a detection telescopic rod fixedly installed on one side of the movable base, and a detection spring is sleeved on the surface of the detection telescopic rod.

7. The mold opening and closing mechanism for automotive photomask injection molding according to claim 1, characterized in that: A mold-closing hydraulic cylinder is fixedly installed on one side of the control plate, and the movable end of the mold-closing hydraulic cylinder is fixedly connected to one side of the movable base.

8. The mold opening and closing mechanism for automotive photomask injection molding according to claim 3, characterized in that: A mounting bracket is fixedly installed on the top of the mounting base plate, and an injection molding machine is fixedly installed on the top of the mounting bracket. The output end of the injection molding machine is connected to the input end of the fixed mold. Cooling interfaces are fixedly installed on the sides of the fixed mold and the movable mold.

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