Anti-locking mold core ejection injection mold
By setting up the matching structure of the moving die core, the moving die core, the ejection plate and the ejection unit in the mold, the burn and jam caused by inconsistent thermal expansion and deformation of the moving die core and the moving die core are solved, and the gap uniformity and high quality of the product appearance are achieved during the ejection of the moving die core.
Patent Information
- Application Number
- CN202421286333.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-06
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-06-06
AI Technical Summary
In the existing die core ejection technology, the thermal expansion and deformation of the moving die core and the moving die core are inconsistent, resulting in a deviation in position and prone to burns and jams.
By setting the matching structure of the moving mold core, the moving mold core, the ejection plate and the ejection pin unit in the mold, the deformation freedom of the moving mold core and the ejection plate are consistent, and the temperature difference is reduced through the mold core water circuit, the mold core water circuit and the water circuit in the plate to ensure the consistency of the position of the moving mold core and the ejection plate.
It effectively reduces the burn and jamming phenomenon when the moving die core is ejected, improves the gap uniformity between the moving die core and the ejection plate, and ensures high quality of the product appearance.
Smart Images
Figure CN222628469U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of injection molds, and specifically relates to an anti-stuck mold core ejection injection mold. Background Art
[0002] Optical products have extremely high requirements for appearance. When both the moving and fixed molds of the product are appearance surfaces, ejector pins are usually not allowed. Instead, the core is used for overall ejection. In order to obtain a better product appearance, optical products are usually molded at high mold temperatures during injection molding.
[0003] The existing mold core ejection usually fixes the mold core on the ejector plate, and the ejection of the ejector plate drives the mold core to be ejected. The movable mold core and the movable mold core are fixed on different templates, and the position accuracy of the movable mold core and the movable mold core is not easy to guarantee. The movable mold core is fixed in the movable template and has a small degree of deformation freedom. The movable mold core is fixed on the ejector plate, and the outer side of the ejector plate is unobstructed, so the degree of deformation freedom is large. In addition, the temperature of the ejector plate and the temperature of the movable mold core are different during the production process, which leads to different thermal expansion deformation of the movable mold core and the movable mold core, and deviation in the position of the movable mold core and the movable mold core. When the movable mold core is ejected, the clearance between the movable mold core and the movable mold core is uneven, and the position with a small clearance is prone to burning and jamming. Utility Model Content
[0004] The utility model aims to provide an anti-stuck mold core ejection injection mold, which can effectively reduce the phenomenon of burning and jamming when the movable mold core is ejected.
[0005] The technical solutions adopted in this utility are as follows:
[0006] An anti-stuck mold core ejection injection mold comprises a movable mold plate and an ejector rod, the ejector rod is fixedly connected with a pressure plate, the outer side of the pressure plate is fixedly connected with an ejector plate located inside the movable mold plate, the ejector plate is fixedly connected with a movable mold core, the pressure plate is fixedly connected with an ejector pin unit penetrating the ejector plate, the movable mold core is fixedly connected inside the movable mold plate and located on the upper side of the ejector plate, and the movable mold core and the ejector pin unit are both vertically slidably connected with the movable mold core;
[0007] A mold core water channel is provided inside the movable mold core, a mold core water channel is provided inside the movable mold core, and an inner-plate water channel is provided inside the ejector plate.
[0008] Furthermore, a precision guide column is fixedly connected to the movable mold core, a through hole is opened inside the ejection plate, a precision guide sleeve is fixedly connected inside the through hole, and the precision guide column is vertically slidably connected inside the precision guide sleeve.
[0009] Furthermore, a return spring is sleeved on the outer side of the precision guide column, one end of the return spring abuts against the ejection plate, and the other end of the return spring abuts against the movable mold core.
[0010] Furthermore, a reset rod is fixedly connected to the upper side of the ejector plate, and when the ejector plate is reset, the upper surface of the reset rod is flush with the upper surface of the movable mold core.
[0011] Furthermore, a support column is fixedly connected to the center position of the movable template, and the ejector plate is vertically slidably connected to the outer side of the bottom plate.
[0012] Furthermore, a guide block is installed at a position where the lower side of the movable mold core contacts the movable mold core, and the movable mold core is vertically slidably connected to the inside of the guide block.
[0013] The technical effects achieved by this utility model are:
[0014] The utility model discloses an anti-stuck mold core ejection injection mold, which makes the deformation freedom of the movable mold core and the ejection plate the same through the cooperation of the movable mold core, the movable mold core, the ejection plate and the ejector unit, reduces the temperature difference of the movable mold core, the movable mold core and the ejection plate through the mold core water channel, the mold core water channel and the plate inner water channel, reduces the position difference caused by high-temperature expansion, makes the processing position consistency of the movable mold core and the ejection plate high, and makes the gap between the movable mold core and the movable mold core uniform, which can effectively reduce the phenomenon of burning and jamming of the movable mold core when ejecting. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a top view of the structure of the utility model;
[0016] Figure 2 It is a partial structural schematic diagram of the utility model;
[0017] Figure 3 This is a practical Figure 1 Side view of the cut structure at AA in the middle;
[0018] Figure 4 It is a side view of the cutaway structure of the present invention from another perspective;
[0019] Figure 5 It is a side view of the cutaway structure of the practical movable mold core;
[0020] Figure 6 It is a side view of the cutaway structure of the practical precision guide column.
[0021] In the accompanying drawings, the components represented by the reference numerals are listed as follows:
[0022] 1. Movable mold core; 2. Movable mold core; 3. Ejector plate; 4. Movable mold plate; 5. Bottom plate; 6. Precision guide pillar; 7. Precision guide sleeve; 8. Reset spring; 9. Reset rod; 10. Mold core water channel; 11. Mold core water channel; 12. Plate inner water channel; 13. Ejector unit; 14. Press plate; 15. Ejector rod; 16. Support column; 17. Positioning pin hole; 18. Guide block; 19. Set screw. DETAILED DESCRIPTION
[0023] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with the embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the present invention, and does not strictly limit the scope of protection specifically requested by the present invention.
[0024] like Figure 1-6 As shown, an anti-stuck core ejection injection mold includes a movable mold plate 4 and an ejector rod 15, the ejector rod 15 is fixedly connected to a pressure plate 14, the outer side of the pressure plate 14 is fixedly connected to an ejector plate 3 located inside the movable mold plate 4, the four side walls of the ejector plate 3 are in contact with the inner wall of the movable mold plate 4, the ejector plate 3 is fixedly connected to a movable mold core 2, and the movable mold core 2 is preferably fixed to the ejector plate 3 by screws.
[0025] The pressing plate 14 is fixedly connected with an ejector unit 13 which passes through the ejector plate 3. The pressing plate 14 is driven to move by the ejector rod 15, so that the movable mold core 2 and the ejector unit 13 can be directly ejected. The lower end of the movable mold plate 4 can be fixedly connected with a bottom plate 5, and a through hole is opened on the bottom plate 5. The ejector rod 15 passes through the bottom plate 5 through the through hole. The ejector plate and square iron of the traditional mold are eliminated, and the ejector plate 3 is used to realize the ejection of the movable mold core 2 and the ejector unit 13.
[0026] The movable mold core 1 is fixedly connected to the movable mold core 1 inside the movable mold plate 4 and on the upper side of the ejector plate 3 by screws. The movable mold core 2 and the ejector unit 13 are vertically slidably connected to the movable mold core 1, so that the ejector plate 3 can move in the mold opening direction of the movable mold plate 4, ensuring that the deformation freedom of the movable mold core 1 and the movable mold plate 4 is the same.
[0027] like Figure 3 and Figure 6 As shown, a precision guide column 6 is fixedly connected to the movable mold core 1, a through hole is opened inside the ejection plate 3, a precision guide sleeve 7 is fixedly connected inside the through hole, and the precision guide column 6 is vertically slidably connected inside the precision guide sleeve 7 to ensure the relative position accuracy of the ejection plate 3 and the movable mold core 1 when ejecting.
[0028] At the same time, if Figure 6 As shown, the installation method of the precision guide pin 6 and the precision guide sleeve 7 is disclosed herein, that is, grooves are provided on the outer sides of the precision guide pin 6 and the precision guide sleeve 7, and set screws 19 are installed on the movable mold core 1 and the ejector plate 3. The set screws 19 can extend to the inside of the groove to position the precision guide pin 6 and the precision guide sleeve 7 to prevent the ejector plate 3 or the precision guide sleeve 7 from falling off during the ejection process of the ejector plate 3.
[0029] In addition, a return spring 8 is sleeved on the outer side of the precision guide column 6, one end of the return spring 8 is against the ejection plate 3, and the other end of the return spring 8 is against the movable mold core 1. The return spring 8 can ensure that the ejection plate 3 returns to its original position after the product is ejected.
[0030] like Figure 2-3 As shown, a reset rod 9 is fixedly connected to the upper side of the ejector plate 3. When the ejector plate 3 is reset, the upper surface of the reset rod 9 is flush with the upper surface of the movable mold core 1, ensuring that the ejector plate 3 is completely reset when the mold is closed.
[0031] At the same time, the center position of the movable template 4 can be fixedly connected with a support column 16, the support column 16 can be fixedly connected to the bottom plate 5, and the ejector plate 3 is vertically slidably connected to the outer side of the bottom plate 5, so as to prevent the movable template 4 from deforming.
[0032] like Figure 2-3 and Figure 5 As shown, a guide block 18 is installed at the position where the lower side of the movable mold core 1 contacts the movable mold core 2, and the movable mold core 2 is vertically slidably connected inside the guide block 18. The guide block 18 can play a guiding role to ensure that the gaps on each surface between the movable mold core 2 and the movable mold core 1 are uniform.
[0033] Moreover, the outer dimensions of the movable mold core 1 and the ejector plate 3 are the same, and positioning pin holes 17 are provided on the movable mold core 1 and the ejector plate 3. During processing, the positioning pins are installed inside the positioning pin holes 17, and the movable mold core 1 and the ejector plate 3 are fixed and then the outer dimensions are processed together, which can further ensure the position of the movable mold core 1 and the movable mold core 2.
[0034] like Figure 3-5 As shown, a core water channel 11 is opened inside the movable core 1, a core water channel 10 is opened inside the movable core 2, and an inner-plate water channel 12 is opened inside the ejector plate 3. The temperature of the core water channel 10, the core water channel 11 and the inner-plate water channel 12 cannot be too high during the production process to ensure that their expansion amounts are similar under high temperatures.
[0035] The working principle of the utility model is as follows: during injection molding production, the pressing plate 14 is pushed by the ejector rod 15 to drive the ejector plate 3 to move, thereby realizing the ejection action of the movable mold core 2 and the ejector unit 13. After the ejection action is completed, the reset spring 8 will drive the ejector plate 3 to reset, thereby driving the movable mold core 2 and the ejector unit 13 to reset together.
[0036] In summary, the technical solution makes the deformation freedom of the movable mold core 1 and the ejector plate 3 the same through the coordination of the movable mold core 1, the movable mold core 2, the ejector plate 3 and the ejector pin unit 13, and reduces the temperature difference among the movable mold core 1, the movable mold core 2 and the ejector plate 3 through the mold core water channel 10, the mold core water channel 11 and the plate water channel 12, thereby reducing the position difference caused by high-temperature expansion, making the processing position consistency of the movable mold core 1 and the ejector plate 3 high, and the gap between the movable mold core 1 and the movable mold core 2 uniform, which can effectively reduce the phenomenon of burning and jamming of the movable mold core 2 during ejection.
[0037] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.
Claims
1. An anti-stuck core ejection injection mold, comprising a movable mold plate (4) and an ejector rod (15), characterized in that: The ejector rod (15) is fixedly connected to a pressure plate (14), the outer side of the pressure plate (14) is fixedly connected to an ejector plate (3) located inside the movable mold plate (4), the ejector plate (3) is fixedly connected to a movable mold core (2), the pressure plate (14) is fixedly connected to an ejector pin unit (13) penetrating the ejector plate (3), the movable mold core (1) is fixedly connected inside the movable mold plate (4) and located on the upper side of the ejector plate (3), and the movable mold core (2) and the ejector pin unit (13) are both vertically slidably connected to the movable mold core (1); A mold core water channel (11) is provided inside the movable mold core (1), a mold core water channel (10) is provided inside the movable mold core (2), and an inner plate water channel (12) is provided inside the ejection plate (3).
2. The anti-stuck core ejection injection mold according to claim 1, characterized in that: A precision guide column (6) is fixedly connected to the movable mold core (1), a through hole is provided inside the ejection plate (3), a precision guide sleeve (7) is fixedly connected inside the through hole, and the precision guide column (6) is vertically slidably connected inside the precision guide sleeve (7).
3. The anti-stuck core ejection injection mold according to claim 2, characterized in that: A return spring (8) is sleeved on the outer side of the precision guide column (6), one end of the return spring (8) abuts against the ejection plate (3), and the other end of the return spring (8) abuts against the movable mold core (1).
4. The anti-stuck core ejection injection mold according to claim 1, characterized in that: A reset rod (9) is fixedly connected to the upper side of the ejection plate (3); when the ejection plate (3) is reset, the upper surface of the reset rod (9) is flush with the upper surface of the movable mold core (1).
5. The anti-stuck core ejection injection mold according to claim 1, characterized in that: A support column (16) is fixedly connected to the center of the movable platen (4), and the ejector plate (3) is vertically slidably connected to the outer side of the bottom plate (5).
6. The anti-stuck core ejection injection mold according to claim 1, characterized in that: A guide block (18) is installed at the position where the lower side of the movable mold core (1) contacts the movable mold core (2), and the movable mold core (2) is vertically slidably connected inside the guide block (18).