mold

Abstract

The application relates to the technical field of injection molds, in particular to a mold which comprises a female mold, a male mold and a male die; the female mold comprises a first breaking area, and the first breaking area comprises a plurality of breaking protrusions which are arranged at intervals; the breaking protrusion comprises a first sealing surface and a first groove, the first groove is recessed in an edge area of the first sealing surface; a breaking through hole is arranged between adjacent breaking protrusions, the breaking through hole penetrates the female mold along a mold closing direction, and the male die is clamped in the breaking through hole; the male die comprises a second sealing surface and a second groove, the second groove is recessed in the second sealing surface; the male mold comprises a second breaking area, and the male mold is pressed with the female mold, so that the first sealing surface and the second sealing surface are attached to the second breaking area. The mold, the male die clamped in the breaking through hole, can reduce the processing difficulty of the female mold; meanwhile, the first groove and the second groove can play the roles of exhausting and avoiding emptying, thereby reducing the abnormal wear of the female mold and prolonging the service life of the mold.

Description

Technical Field

[0001] This application relates to the field of injection mold technology, and more particularly to a mold. Background Technology

[0002] Some injection-molded products include venting structures. These venting structures rely on the crushing action between the male and female molds in the mold. However, when the crushing action between the male and female molds takes a long time, the crushing surfaces of the male and female molds are prone to wear, reducing the service life of the mold. This also leads to an increase in the number of burrs on the product obtained from subsequent crushing processes. Furthermore, when there are a large number of venting structures, the structural stability of the product is weak, making it impossible to remove burrs in subsequent processes, thus reducing the product yield. Utility Model Content

[0003] In view of this, this application provides a mold that can solve at least one of the above-mentioned technical problems.

[0004] This application provides a mold, the mold including a female mold, a male mold, and an insert; the female mold includes a first tear-resistant area, the first tear-resistant area including a plurality of tear-resistant protrusions spaced apart; the tear-resistant protrusions include a first sealing surface and a first groove, the first groove being configured to be recessed into the edge region of the first sealing surface; a tear-resistant through hole is provided between adjacent tear-resistant protrusions, the tear-resistant through hole penetrating the female mold along the mold closing direction, the insert being configured to be engaged in the tear-resistant through hole; the insert includes a second sealing surface and a second groove, the second groove being configured to be recessed into the second sealing surface; the male mold includes a second tear-resistant area, the male mold being configured to press against the female mold, such that the first sealing surface is configured to fit against the second tear-resistant area, and the second sealing surface is configured to fit against the second tear-resistant area.

[0005] In the above scheme, the insert is installed in the through hole, which can reduce the processing time of the female mold, reduce the processing difficulty of the male and female molds, and can be replaced individually when the insert is damaged, reducing the maintenance cost of the mold. At the same time, the first groove and the second groove can play the role of venting and avoiding air gaps when the male and female molds are closed, reducing the hard impact between the female mold and the material, thereby reducing abnormal wear of the female mold, making the mold maintenance cycle longer and improving the service life of the mold.

[0006] In some embodiments, the first sealing surface and the second sealing surface are configured to have the same size, and the first groove and the second groove are configured to have the same size.

[0007] The first sealing surface and the second sealing surface have the same dimensions. The first gap area can form an approximately continuous surface, which makes the force uniform when the male mold and the female mold are closed, reduces stress concentration, forms a seamless seal, and reduces the generation of burrs.

[0008] In some embodiments, the groove width of the first groove is 0.18mm-0.22mm.

[0009] The width of the first groove is within the above range. The first groove and the second groove serve to vent air while reducing the problem of burrs caused by excessive groove width.

[0010] In some embodiments, the groove depth of the first groove is 14.5 μm-15.5 μm.

[0011] The width of the first groove is within the above range. The first groove and the second groove serve to vent air while reducing the problem of burrs caused by excessive groove depth.

[0012] In some embodiments, the protrusion that breaks the surface and the first area that breaks the surface are integrally formed.

[0013] The support protrusion and the first support area are integrally formed, which makes the support protrusion more stable, reduces abnormal wear caused by displacement of the support protrusion, extends the maintenance cycle of the mold, and improves the service life of the mold.

[0014] In some embodiments, the insert includes a limiting structure configured to restrict the insert from disengaging from the through hole in the mold closing direction.

[0015] The limiting structure can reach the end of the mold's stroke, ensuring the accuracy of the final mold closing position.

[0016] In some embodiments, the break-through protrusion includes a first vent hole configured to extend through the break-through protrusion in the mold closing direction.

[0017] The first vent provides an efficient outlet path for gas inside the mold, effectively reducing defects such as scorching, incomplete filling, and air bubbles caused by gas not being able to escape, and significantly improving product quality.

[0018] In some embodiments, the insert includes a second vent hole configured to extend through the insert in the mold closing direction.

[0019] The second vent provides an efficient outlet path for gas inside the mold, effectively reducing defects such as scorching, incomplete filling, and air bubbles caused by gas not being able to escape, and significantly improving product quality.

[0020] In some embodiments, the first sealing surface and the second sealing surface are configured as planes.

[0021] The first and second sealing surfaces are flat, resulting in relatively less wear during the molding process, which can further increase the service life of the mold.

[0022] In some embodiments, the number of the anti-break protrusions and the anti-break through holes are configured to be the same.

[0023] If the number of protrusions and through holes is within the above range, products that meet production requirements can be obtained. Attached Figure Description

[0024] Figure 1 A schematic diagram of the mold provided in this application.

[0025] Figure 2 for Figure 1 An exploded view of the mold shown.

[0026] Figure 3 for Figure 1 The diagram shows the structure of the master mold of the mold.

[0027] Figure 4 for Figure 2 An enlarged view of region IV is shown.

[0028] Figure 5 for Figure 1 The diagram shows the structure of the insert of the mold.

[0029] Figure 6 for Figure 5 A partial view of the insert shown.

[0030] Figure 7 for Figure 1 The diagram shows the structure of the male mold of the mold.

[0031] Explanation of key component symbols: 100. Mold; 1. Master mold; 11. First breach area; 12. Breach protrusion; 121. First sealing surface; 122. First groove; 123. First vent hole; 13. Breach through hole; 2. Inserting a piece; 21. Main body; 22. Second sealing surface; 23. Second groove; 24. Limiting structure; 25. Second vent; 3. Public mold; 31. Second broken area. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0033] In view of the problems of poor mold life and low product yield in the prior art, this application provides a mold 100, which extends the service life of the mold 100 and improves the product yield by improving the structure of the mold 100 itself.

[0034] Please refer to Figure 1 and Figure 2 The mold 100 of this application includes a female mold 1, an insert 2 and a male mold 3. The female mold 1 is used to form the external shape and appearance of the product; the male mold 3 is used to form the internal structure of the product and is responsible for ejecting the product; the insert 2 is a replaceable module that can replace the easily worn and structurally complex parts of the female mold 1, thereby simplifying the processing difficulty of the female mold 1 and reducing the maintenance cost of the female mold 1.

[0035] Please refer to Figure 3 and Figure 4 The master mold 1 includes a first breakage area 11, which is an annular area distributed on the master mold 1. The first breakage area 11 includes a plurality of spaced-apart breakage protrusions 12 of the same size. Each breakage protrusion 12 includes a first sealing surface 121 and a first groove 122. The first sealing surface 121 and the first groove 122 of each breakage protrusion 12 have the same size. The first sealing surface 121 is an inclined surface, which is inclined on the breakage protrusion 12 in the direction away from the axis of the master mold 1 along the mold closing direction. The first groove 122 is recessed into the edge area of ​​the first sealing surface 121, that is, the first groove 122 is arranged around the first sealing surface 121.

[0036] In some embodiments, the width of the first groove 122 is 0.18mm-0.22mm, and the depth of the first groove 122 is 14.5μm-15.5μm. Optionally, the width of the first groove 122 can be 0.18mm, 0.19mm, 0.20mm, 0.21mm, and 0.22mm, etc., and the depth can be 14.5μm, 14.6μm, 14.7μm, 14.8μm, 14.9μm, 15.0μm, 15.1μm, 15.2μm, 15.3μm, 15.4μm, and 15.5μm, etc., or a range consisting of any two of the above values. By ensuring the width and depth of the first groove 122 are within the above ranges, the volume of the first groove 122 can be controlled. The first groove 122 can serve as a venting mechanism while reducing or even preventing burrs caused by an excessively large groove volume.

[0037] In some embodiments, the abutment protrusion 12 further includes a first vent 123, which is configured to extend through the abutment protrusion 12 in the mold closing direction. The first vent 123 provides an efficient outlet path for gas within the mold 100, effectively reducing defects such as scorching, incomplete filling, and bubbles caused by gas not being able to escape, and significantly improving product quality.

[0038] A through hole 13 is provided between adjacent breaking protrusions 12. In some embodiments, the total number of breaking protrusions 12 and breaking through holes 13 is 108, and the number of breaking protrusions 12 and breaking through holes 13 is the same, that is, 54 each. The number of breaking protrusions 12 and breaking through holes 13 is within the above range, and products that meet production needs can be obtained.

[0039] In some embodiments, the through hole 13 penetrates the female mold 1 along the mold closing direction, and the through hole 13 is the mounting location for the insert 2, which is configured to be engaged within the through hole 13 along the mold closing direction. Please refer to... Figure 5 and Figure 6 The insert 2 is a strip-shaped structure, including a main body 21. One end of the main body 21 includes a second sealing surface 22 and a second groove 23. The second sealing surface 22 and the second groove 23 of each insert 2 have the same size. The second sealing surface 22 is a sloped surface, which is inclinedly disposed on the main body 21 along a second direction. The second groove 23 is recessed into the edge region of the second sealing surface 22, that is, the second groove 23 is configured to surround the second sealing surface 22.

[0040] In some embodiments, the first sealing surface 121 and the second sealing surface 22 are configured to have the same size, and the first groove 122 and the second groove 23 are configured to have the same size, that is, the groove width of the second groove 23 is 0.18mm-0.22mm, and the groove depth is 14.5μm-15.5μm. The fact that the first sealing surface 121 and the second sealing surface 22 have the same size, and that the sizes of the first groove 122 and the second groove 23 are controlled within the above range, allows the first breaking area 11 to form an approximately continuous surface. This ensures uniform force distribution when the male mold 3 and the female mold 1 are closed, reduces stress concentration, facilitates seamless sealing, and reduces the generation of burrs.

[0041] In some embodiments, the first sealing surface 121 and the second sealing surface 22 are configured as planes. Since the first sealing surface 121 and the second sealing surface 22 are planes, during the crushing process between the male mold 3 and the female mold 1, the wear on the first sealing surface 121 and the second sealing surface 22 is relatively small, which can further increase the service life of the mold 100.

[0042] In some embodiments, the insert 2 further includes a limiting structure 24, which is configured to restrict the insert 2 from disengaging from the through hole 13 along the mold closing direction. The limiting structure 24 can reach the end point of the stroke of the insert 2, preventing excessive movement of the insert 2 and ensuring the accuracy of the final mold closing position. Optionally, the limiting structure 24 in this application is a limiting surface.

[0043] In some embodiments, the insert 2 further includes a second vent 25, which is configured to extend through the insert 2 in the mold closing direction. The second vent 25 provides an efficient outlet path for gas within the mold 100, effectively reducing defects such as scorching, incomplete filling, and air bubbles caused by gas not being able to escape, and significantly improving product quality.

[0044] Please refer to Figure 7 The male mold 3 includes a second rupture area 31, which is an annular area distributed on the male mold 3. The second rupture area 31 is used to make the first sealing surface 121 fit with the second rupture area 31 when the male mold 3 is configured to press with the female mold 1. The insert 2 is configured to be stuck in the rupture through hole 13, so that the second sealing surface 22 fits with the second rupture area 31, thereby completing the mold closing process of the male mold 3 and the female mold 1.

[0045] The insert 2 is installed inside the through hole 13, which can reduce the processing time of the female mold 1, reduce the processing difficulty of the male mold 3 and the female mold 1, and can be replaced separately when the insert 2 is damaged, reducing the maintenance cost of the mold. At the same time, the first groove 122 and the second groove 23 play the role of venting and also play the role of avoiding air gaps when the male mold 3 and the female mold 1 are closed, which can reduce the hard impact between the female mold 1 and the material, reduce the abnormal wear of the female mold 1, extend the maintenance cycle of the mold 100, and improve the service life of the mold 100.

[0046] In some embodiments, the adhesion between the first sealing surface 121, the second sealing surface 22, and the second breakage area 31 can be tested using red lead. Specifically, red lead is first evenly and thinly applied to the second breakage area 31, then the mold is closed and normal clamping pressure is applied. After the mold is opened, the pigment transfer between the first sealing surface 121 and the second sealing surface 22 is observed: if the red lead mark is evenly and continuously distributed throughout the entire first sealing surface 121 and the entire second sealing surface 22, it indicates that the breakage surfaces are well adhered; if there are interruptions in the mark or blank areas with no color, it indicates that there are gaps in the breakage surfaces and the adhesion is not tight.

[0047] In practical applications, when the male mold 3 moves toward the female mold 1, the second rupture area 31 on the male mold 3 will come into contact with the second sealing surface 22 of the insert 2 and the first sealing surface 121 of the female mold and complete the positioning. At this time, the first sealing surface 121 and the second sealing surface 22 are fully and tightly fitted with the second rupture area 31, and the sealing is completed.

[0048] After the mold is closed, the molten material is injected into the cavity. Due to the reliable sealing, there will be no overflow. When the mold is opened, the male mold 3 separates from the female mold 1, and the product can be taken out to prepare for the next mold closing.

[0049] Furthermore, those skilled in the art should recognize that the above embodiments are merely illustrative of this application and are not intended to limit this application. Any appropriate changes and variations made to the above embodiments within the essential spirit and scope of this application fall within the scope of this application's disclosure.

Claims

1. A mold, characterized in that, The mold includes a female mold, an insert, and a male mold; The master mold includes a first tear-resistant area, which includes a plurality of tear-resistant protrusions spaced apart; the tear-resistant protrusions include a first sealing surface and a first groove, wherein the first groove is configured to be recessed into the edge region of the first sealing surface. A through hole is provided between adjacent protrusions, the through hole penetrating the female mold along the mold closing direction, and the insert is configured to be engaged in the through hole; the insert includes a second sealing surface and a second groove, the second groove being configured to be recessed into the second sealing surface; The male mold includes a second tear-resistant area, and the male mold is configured to press against the female mold such that the first sealing surface is configured to adhere to the second tear-resistant area, and the second sealing surface is configured to adhere to the second tear-resistant area.

2. The mold according to claim 1, characterized in that, The first sealing surface and the second sealing surface are configured to have the same size, and the first groove and the second groove are configured to have the same size.

3. The mold according to claim 2, characterized in that, The width of the first groove is 0.18mm-0.22mm.

4. The mold according to claim 2, characterized in that, The depth of the first groove is 14.5μm-15.5μm.

5. The mold according to claim 1, characterized in that, The protruding section and the first protruding area are integrally formed.

6. The mold according to claim 1, characterized in that, The insert includes a limiting structure configured to restrict the insert from disengaging from the through hole along the mold closing direction.

7. The mold according to claim 1, characterized in that, The break-through protrusion includes a first vent hole, which is configured to pass through the break-through protrusion along the mold closing direction.

8. The mold according to claim 1, characterized in that, The insert includes a second vent hole configured to pass through the insert in the mold closing direction.

9. The mold according to claim 1, characterized in that, The first sealing surface and the second sealing surface are configured as planes.

10. The mold according to claim 1, characterized in that, The number of the protruding bumps is the same as the number of the through holes.

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