Mosquito net mold
By using a rear mold insert and a two-stage demolding design, the mosquito net mold solves the problems of uneven demolding and deformation/breakage of mosquito net products, achieving a smooth and evenly stressed demolding process, thus improving product quality and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHONGSHAN DEZE PACKAGING PROD CO LTD
- Filing Date
- 2025-07-11
- Publication Date
- 2026-07-21
AI Technical Summary
In the existing technology, mosquito net products tend to stick to the front mold during demolding, and uneven ejection force can cause deformation or breakage, affecting product quality and production efficiency.
The mosquito net mold uses a sliding design of the rear mold insert to replace the traditional central ejector pin. Combined with a two-stage demolding process, the central area of the finished mosquito net is first demolded by the rear mold insert, and then the surrounding area is detached by the rear mold ejector pin, achieving step-by-step, stable, and uniformly stressed demolding.
It significantly improves the smoothness and integrity of product demolding, increases the yield rate, avoids product deformation and breakage, and enhances the versatility and production efficiency of molds.
Smart Images
Figure CN224527848U_ABST
Abstract
Description
[Technical Field]
[0001] This application belongs to the field of mold technology, specifically relating to a mosquito repellent net mold. [Background Technology]
[0002] In existing technologies, when using molds to produce mosquito net products, the molded products tend to stick to the front mold, causing difficulties in mold opening. Simultaneously, during the ejection process from the rear mold using ejector pins, the products are prone to deformation or even breakage due to concentrated or uneven ejection forces, affecting product quality and production efficiency. Therefore, there is an urgent need to improve the mold structure to achieve smooth demolding and prevent product damage. [Utility Model Content]
[0003] To address the problems of unsmooth demolding of mosquito net products in the prior art, and the easy deformation and breakage of the products during demolding, this application provides a mosquito net mold.
[0004] This application is achieved through the following technical solution:
[0005] A mosquito net mold includes a front mold core, a rear mold core pressed against the front mold core, and a rear mold insert and a rear mold ejector pin slidably connected relative to the rear mold core. The rear mold insert cooperates with the front mold core and the rear mold core to form a casting cavity for molding the finished mosquito net. The rear mold core slides upward relative to the rear mold insert to disengage the middle area of the finished mosquito net from the rear mold insert. The rear mold ejector pin moves upward relative to the rear mold core to disengage the surrounding area of the finished mosquito net from the rear mold core.
[0006] As described above, a mosquito net mold has a front mold insert on the front mold core and a molding groove and a sliding slot located in the molding groove for the rear mold insert to slide. The front mold insert and the rear mold insert cooperate to form a casting cavity in the molding groove.
[0007] As described above, in a mosquito net mold, a front mold recess corresponding to the rear mold insert is formed between adjacent front mold inserts, and a rear mold recess corresponding to the front mold insert is formed between adjacent rear mold inserts and between adjacent sliding grooves.
[0008] As described above, a mosquito net mold is provided below the rear mold core, which is used to support the rear mold insert. The rear mold insert fixing seat can move up and down relative to the rear mold core.
[0009] In the mosquito repellent net mold described above, the rear mold ejector pin is arranged around the sliding groove and corresponding to the edge of the forming groove.
[0010] As described above, a mosquito net mold has a sprue on the front mold core that connects to the casting cavity.
[0011] As described above, a mosquito net mold further includes a front mold sliding insert that abuts against the finished mosquito net. The front mold core is provided with an installation groove for the front mold sliding insert to slide up and down. A front template is provided above the front mold core. An elastic member provided between the front mold core and the front template drives the front mold sliding insert to push the finished mosquito net towards the rear mold core.
[0012] As described above, in a mosquito net mold, the mounting groove is provided with a limiting platform to restrict the front mold sliding insert from moving downward out of the mounting groove, and the front mold sliding insert is provided with an opening through which a pin passes to cooperate with the limiting platform.
[0013] As described above, a mosquito net mold further includes a rear template connected to the rear mold core. When the rear template is opened relative to the front template, the front mold sliding insert pushes the finished mosquito net towards the rear mold core.
[0014] As described above, a mosquito net mold further includes an ejector plate connected to the rear mold ejector pin. The rear mold core and the ejector plate move upward relative to the rear mold insert, thereby sequentially causing the middle area of the finished mosquito net to detach from the rear mold insert and the surrounding area of the finished mosquito net to detach from the rear mold core.
[0015] Compared with the prior art, this application has the following advantages:
[0016] This application discloses a mosquito net mold that replaces the traditional central ejector pin to form the core of the casting cavity by using a rear mold insert that can slide upward relative to the rear mold core. This avoids the risk of deformation or breakage in the central area caused by concentrated ejection force and is more conducive to the optimized arrangement of water flow within the mold. Furthermore, it incorporates a two-stage demolding design. First, the rear mold insert slides upward to release stress in the central area of the finished mosquito net. Then, the rear mold ejector pin pushes upward to detach the surrounding area from the rear mold core. This achieves a step-by-step, smooth, and uniformly stressed demolding process, significantly improving the smoothness, integrity, and yield of product demolding. [Attached Image Description]
[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a three-dimensional perspective view of an embodiment of this application;
[0019] Figure 2 yes Figure 1 Exploded view;
[0020] Figure 3 This is a three-dimensional perspective view of the front mold core and the rear mold core in the embodiments of this application;
[0021] Figure 4 yes Figure 3 Exploded view;
[0022] Figure 5 yes Figure 3 A schematic diagram of the internal cross-section at point AA in the mold-closed state;
[0023] Figure 6 yes Figure 3 A schematic diagram of the internal cross-section at point AA in the open state;
[0024] Figure 7 yes Figure 3 A schematic diagram of the internal cross-section at point AA in the demolded state;
[0025] Figure 8 This is a three-dimensional perspective view of the rear mold core in the embodiments of this application;
[0026] Figure 9 It is the three-dimensional solid of the front mold core in the embodiments of this application. Figure 1 ;
[0027] Figure 10 It is the three-dimensional solid of the front mold core in the embodiments of this application. Figure 2 ;
[0028] Figure 11 This is a three-dimensional perspective view of the rear mold insert in the embodiments of this application;
[0029] Figure 12 This is a schematic diagram of the interior side of the mold in this application;
[0030] Figure 13 This is a schematic diagram of the front interior of the mold used in this application.
Detailed Implementation Methods
[0031] To make the technical problems solved by this application, the technical solutions, and the beneficial effects clearer, this application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.
[0032] Please see Figures 1 to 13A mosquito net mold includes a front mold core 1, a rear mold core 2 pressed against the front mold core 1, and a rear mold insert 3 and a rear mold ejector pin 4 slidably connected relative to the rear mold core 2. The rear mold insert 3 cooperates with the front mold core 1 and the rear mold core 2 to form a casting cavity for molding a finished mosquito net 5. The rear mold core 2 slides upward relative to the rear mold insert 3 to disengage the middle area of the finished mosquito net 5 from the rear mold insert 3. The rear mold ejector pin 4 moves upward relative to the rear mold core 2 to disengage the surrounding area of the finished mosquito net 5 from the rear mold core 2.
[0033] This application discloses a mosquito net mold that replaces the traditional central ejector pin to form the core of the casting cavity by using a rear mold insert that can slide upward relative to the rear mold core. This avoids the risk of deformation or breakage in the central area caused by concentrated ejection force and is more conducive to the optimized arrangement of water flow within the mold. Furthermore, it incorporates a two-stage demolding design. First, the rear mold insert slides upward to release stress in the central area of the finished mosquito net. Then, the rear mold ejector pin pushes upward to detach the surrounding area from the rear mold core. This achieves a step-by-step, smooth, and uniformly stressed demolding process, significantly improving the smoothness, integrity, and yield of product demolding.
[0034] Furthermore, as a preferred embodiment of this solution and not a limitation, the front mold core 1 is provided with a front mold insert 11, and the rear mold core 2 is provided with a molding groove 21 and a sliding slot 22 located in the molding groove 21 and for the rear mold insert 3 to slide. The front mold insert 11 and the rear mold insert 3 cooperate to form a casting cavity in the molding groove 21.
[0035] In this embodiment, the front mold insert 11 and the rear mold insert 3, which are slidably disposed in the molding groove 21 of the rear mold core 2, cooperate to form the casting cavity 6, making the mold structure more compact and reasonable. The sliding of the rear mold insert 3 in the sliding groove 22 realizes the smooth demolding of the molded product, solving the problem of easy deformation and breakage of the product in traditional molds. When the mold is opened, the rear mold insert 3 can slide relative to the rear mold core 2, so that the middle area of the mosquito net product 5 is detached first, avoiding deformation caused by concentrated stress. At the same time, the precise cooperation between the front mold insert 11 and the rear mold insert 3 ensures the molding accuracy of the casting cavity 6.
[0036] Furthermore, as a preferred embodiment of this solution and not a limitation, a front mold recess 12 corresponding to the rear mold insert 3 is formed between adjacent front mold inserts 11, and a rear mold recess 23 corresponding to the front mold insert 11 is formed between adjacent rear mold inserts 3 and between adjacent sliding grooves 22.
[0037] In this embodiment, by setting front mold recesses 12 between front mold inserts 11 to cooperate with rear mold inserts 3, and setting rear mold recesses 23 between rear mold inserts 3 and between sliding grooves 22 to cooperate with front mold inserts 11, a mutually interlocking concave-convex structure is formed, which improves molding accuracy and product dimensional stability. The concave-convex structure optimizes the melt flow path, making the mold filling more uniform and significantly improving the surface quality of the product. The front mold inserts 11 and rear mold inserts 3 adopt an interlaced honeycomb structure, which can further enhance the heat dissipation performance of the mold, making the product cool more uniformly, and also improving the consistency of mesh forming. It is particularly suitable for the production of ultra-thin mosquito net products. At the same time, this structural design makes it less likely for residual material to accumulate in the mold during long-term use, reducing the maintenance frequency. In addition, the rear mold inserts 3 are designed as a modular structure that can be quickly replaced, and the mesh density and distribution can be flexibly adjusted according to different product requirements, which greatly improves the versatility of the mold and production efficiency.
[0038] Furthermore, as a preferred embodiment of this solution and not a limitation, a rear mold insert fixing seat 7 for supporting the rear mold insert 3 is also provided below the rear mold core 2, and the rear mold insert fixing seat 7 can move up and down relative to the rear mold core 2.
[0039] In this embodiment, the rear mold insert fixing seat 7 provides stable support for the rear mold insert 3, ensuring that it maintains a precise position and posture during mold operation, thereby improving molding accuracy and product quality. Secondly, the mobility of the rear mold insert fixing seat 7 allows the rear mold insert 3 to flexibly adjust its position during demolding, which helps the mosquito net finished product 5 to smoothly detach from the mold, reducing the risk of product deformation and damage. During injection molding, the rear mold insert fixing seat 7 provides stable support to ensure molding accuracy. During demolding, by controlling the movement stroke of the rear mold insert fixing seat 7, the product can be demolded in stages and in an orderly manner, avoiding deformation or breakage caused by sudden release of internal stress.
[0040] Furthermore, as a preferred embodiment of this solution and not a limitation, the rear mold ejector pin 4 is disposed around the sliding groove 22 and corresponding to the edge of the molding groove 21.
[0041] In this embodiment, by setting the rear mold ejector pins 4 around the sliding groove 22 and corresponding to the edge of the forming groove 21, the point of application of the ejection force is distributed around the product. This ensures that the product can be ejected stably and avoids the problem of deformation or breakage of the thin-walled mesh structure that is easy to cause by the traditional middle ejector pin method. When the rear mold insert 3 completes the demolding of the middle area, the rear mold ejector pins 4 evenly arranged around the perimeter move synchronously to apply a balanced ejection force to the perimeter of the product, so as to achieve the smooth separation of the product from the rear mold core 2. The force is uniform and controllable throughout the process.
[0042] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the front mold core 1 is provided with a sprue 8 that communicates with the casting cavity.
[0043] In this embodiment, after the mold is closed, the injection molding machine injects molten material into the gating cavity through the sprue 8. After the material cools and solidifies in the gating cavity, the mosquito net product 5 is formed. During this process, the cooling medium enters the mold through the sprue 8 to cool the gating cavity and the surrounding mold structure, ensuring that the product can cool and solidify quickly and uniformly. This design not only improves the molding quality of the product but also extends the service life of the mold.
[0044] Furthermore, as a preferred embodiment of this solution and not a limitation, it also includes a front mold sliding insert 9 that abuts against the finished mosquito net 5. The front mold core 1 is provided with an installation groove 13 for the front mold sliding insert 9 to slide up and down. A front template 10 is provided above the front mold core 1. An elastic member provided between the front mold core 1 and the front template 10 drives the front mold sliding insert 9 to push the finished mosquito net 5 towards the rear mold core 2.
[0045] In this embodiment, the active pushing action of the front mold sliding insert 9 effectively prevents the finished mosquito net 5 from adhering to the front mold core 1 during mold opening, significantly improving the smoothness and efficiency of demolding. Secondly, the elastic element ensures that the front mold sliding insert 9 can quickly and smoothly push the product at the moment of mold opening, reducing the risk of product deformation or damage caused by external impact.
[0046] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the mounting groove 13 is provided with a limiting platform 14 to restrict the front mold sliding insert 9 from disengaging downward from the mounting groove 13, and the front mold sliding insert 9 is provided with an opening 91 through which a pin passes to cooperate with the limiting platform 14.
[0047] In this embodiment, it is ensured that the front mold sliding insert 9 can accurately perform the pushing action when the mold is opened, and the insert is prevented from excessive displacement or falling off under the action of the elastic element. At the same time, the cooperation between the pin and the opening 91 provides a convenient positioning reference for mold assembly, which greatly improves the efficiency of maintenance. When the mold is opened, the guiding effect of the pin in the opening 91 ensures that the insert moves in a straight line. After the pushing action is completed, the limiting platform 14 prevents the insert from overtravel through the mechanical blocking effect of the pin. The whole movement process is precise and controllable.
[0048] Furthermore, as a preferred embodiment of this solution and not a limitation, it also includes a rear template 24 connected to the rear mold core 2. When the rear template 24 is opened relative to the front template 10, the front mold sliding insert 9 pushes the finished mosquito net 5 toward the rear mold core 2.
[0049] In this embodiment, the pushing action of the front mold sliding insert 9 is perfectly synchronized with the mold opening stroke of the template during the mold separation process. This ensures that the mosquito net finished product 5 can reliably detach from the front mold without causing product deformation or tearing due to premature or late pushing action. Its working principle is that when the mold opens, the rear template 24 drives the rear mold core 2 to separate from the front template 10. At this time, the elastic element installed between the front template 10 and the front mold core 1 drives the front mold sliding insert 9 to push the mosquito net finished product 5 towards the rear mold core 2 with constant pressure.
[0050] Furthermore, as a preferred embodiment of this solution and not a limitation, it also includes an ejector plate 41 connected to the rear mold ejector pin 4. The rear mold core 2 and the ejector plate 41 move upward relative to the rear mold insert 3, thereby sequentially causing the middle area of the mosquito net finished product 5 to detach from the rear mold insert 3 and the surrounding area of the mosquito net finished product 5 to detach from the rear mold core 2.
[0051] In this embodiment, a phased and progressive demolding of the mosquito net product 5 is achieved. First, the rear mold core 2 moves upward to release the internal stress by separating the middle area of the product from the rear mold insert 3. Then, the ejector plate 41 drives the rear mold ejector pin 4 to eject the surrounding area of the product. This two-stage demolding method completely solves the quality problems such as deformation and breakage of thin-walled mesh products caused by traditional one-time ejection. Its working principle is that in the first stage of demolding, the rear mold core 2 moves upward relative to the relatively stationary rear mold insert 3. The relative movement of the mold structure itself allows the middle mesh area of the product to be demolded smoothly. At this time, the surrounding area of the product is still fixed by the rear mold core 2 to maintain its shape. In the second stage, the ejector plate 41 moves to drive the rear mold ejector pin 4 to eject the surrounding area of the product. The entire demolding process adopts the method of "loosening the center first and demolding the surrounding area later" to keep the product in a controlled state.
[0052] The working principle of this embodiment is as follows:
[0053] This application discloses a mosquito net mold that replaces the traditional central ejector pin to form the core of the casting cavity by using a rear mold insert that can slide upward relative to the rear mold core. This avoids the risk of deformation or breakage in the central area caused by concentrated ejection force and is more conducive to the optimized arrangement of water flow within the mold. Furthermore, it incorporates a two-stage demolding design. First, the rear mold insert slides upward to release stress in the central area of the finished mosquito net. Then, the rear mold ejector pin pushes upward to detach the surrounding area from the rear mold core. This achieves a step-by-step, smooth, and uniformly stressed demolding process, significantly improving the smoothness, integrity, and yield of product demolding.
[0054] The above are implementation methods provided in conjunction with specific content, and it is not intended that the specific implementation of this application is limited to these descriptions. Any methods or structures that are similar to those of this application, or any technical deductions or substitutions made based on the concept of this application, should be considered within the scope of protection of this application.
Claims
1. A mosquito repellent net mold, characterized in that, The device includes a front mold core (1), a rear mold core (2) pressed against the front mold core (1), and a rear mold insert (3) and a rear mold ejector pin (4) that slide vertically relative to the rear mold core (2). The rear mold insert (3) cooperates with the front mold core (1) and the rear mold core (2) to form a casting cavity for molding a mosquito net finished product (5). The rear mold core (2) slides upward relative to the rear mold insert (3) to disengage the middle area of the mosquito net finished product (5) from the rear mold insert (3). The rear mold ejector pin (4) moves upward relative to the rear mold core (2) to disengage the surrounding area of the mosquito net finished product (5) from the rear mold core (2).
2. The mosquito repellent net mold according to claim 1, characterized in that, The front mold core (1) is provided with a front mold insert (11), and the rear mold core (2) is provided with a molding groove (21) and a sliding groove (22) located in the molding groove (21) for the rear mold insert (3) to slide. The front mold insert (11) and the rear mold insert (3) cooperate to form a casting cavity in the molding groove (21).
3. A mosquito repellent net mold according to claim 2, characterized in that, A front mold recess (12) corresponding to the rear mold insert (3) is formed between adjacent front mold inserts (11), and a rear mold recess (23) corresponding to the front mold insert (11) is formed between adjacent rear mold inserts (3) and between adjacent sliding slots (22).
4. A mosquito repellent net mold according to claim 1, characterized in that, Below the rear mold core (2), there is also a rear mold insert fixing seat (7) for supporting the rear mold insert (3), and the rear mold insert fixing seat (7) moves up and down relative to the rear mold core (2).
5. A mosquito repellent net mold according to claim 3, characterized in that, The rear mold ejector pin (4) is positioned around the sliding groove (22) and corresponding to the edge of the molding groove (21).
6. A mosquito repellent net mold according to claim 1, characterized in that, The front mold core (1) is provided with a sprue (8) that connects to the casting cavity.
7. A mosquito repellent net mold according to claim 1, characterized in that, It also includes a front mold sliding insert (9) that abuts against the finished mosquito net (5). The front mold core (1) is provided with an installation groove (13) for the front mold sliding insert (9) to slide up and down. A front template (10) is provided above the front mold core (1). An elastic member provided between the front mold core (1) and the front template (10) drives the front mold sliding insert (9) to push the finished mosquito net (5) towards the rear mold core (2).
8. A mosquito repellent net mold according to claim 7, characterized in that, The mounting groove (13) is provided with a limiting platform (14) to restrict the front mold sliding insert (9) from falling out of the mounting groove (13), and the front mold sliding insert (9) is provided with an opening (91) through which a pin rod passes to cooperate with the limiting platform (14).
9. A mosquito repellent net mold according to claim 7, characterized in that, It also includes a rear template (24) connected to the rear mold core (2). When the rear template (24) is opened relative to the front template (10), the front mold sliding insert (9) pushes the finished mosquito net (5) toward the rear mold core (2).
10. A mosquito repellent net mold according to claim 9, characterized in that, It also includes an ejector plate (41) connected to the rear mold ejector (4). The rear mold core (2) and the ejector plate (41) move upward relative to the rear mold insert (3), so that the middle area of the mosquito net product (5) is separated from the rear mold insert (3) and the surrounding area of the mosquito net product (5) is separated from the rear mold core (2).