Die blind hole valve needle locking module

Abstract

The utility model relates to a die blind hole valve needle locking module, which comprises a locking module, a false valve needle, two outer positioning rubber rings and two inner positioning rubber rings, wherein the locking module consists of an upper cylindrical ejector block, a lower cylindrical ejector block and a central block; the center block is located between the upper cylindrical ejector block and the lower cylindrical ejector block and fixedly connected with the upper cylindrical ejector block and the lower cylindrical ejector block through bolts, an outer positioning rubber ring and an inner positioning rubber ring are clamped between the upper cylindrical ejector block and the upper end of the center block, and an outer positioning rubber ring and an inner positioning rubber ring are clamped between the lower cylindrical ejector block and the lower end of the center block. The upper cylindrical ejector block, the lower cylindrical ejector block and the central block are provided with central via holes with the same axis in the axis direction, the false valve needle is installed in the central via holes, and the central block, the upper cylindrical ejector block and the lower cylindrical ejector block are connected and fixed through two screws; the utility model has the advantages that the locking module for positioning the false valve needle is added, so that the processing auxiliary work can be reduced, the efficiency is increased, and the cost is reduced. After polishing, the hole plugging device is removed, and the large-surface holed characteristic is very perfect.

Description

Technical Field

[0001] This utility model relates to the field of machining, and in particular to a mold blind hole valve pin locking module. Background Technology

[0002] When polishing high-precision areas of mold surfaces, especially those with hot runner gates (intermediate holes), the polishing process can cause corner collapse around these holes, especially when polishing is unavoidable. To ensure mold surface characteristics and quality, existing techniques involve machining additional threaded holes behind the blind hole to secure an arc-shaped baffle, which in turn holds the ejector pin. The ejector pin, positioned within the intermediate hole, effectively blocks the large blind hole. This method is complex, and a tool for quickly securing ejector pins is urgently needed. Utility Model Content

[0003] In view of the above problems, the purpose of this utility model is to provide a mold blind hole valve pin locking module, which is used to quickly fix the ejector pin in the middle hole, ensuring that there will be no adverse effects such as collapsed corners and rounded openings during the polishing process, and also improving work efficiency, so as to overcome the shortcomings of the above-mentioned prior art.

[0004] This utility model provides a locking module for a blind hole valve pin in a mold, comprising: a locking module consisting of an upper cylindrical top block, a lower cylindrical top block, and a center block; a dummy valve pin; and two outer positioning rubber rings and two inner positioning rubber rings. The center block is located between the upper and lower cylindrical top blocks and is fixedly connected by bolts. An outer positioning rubber ring and an inner positioning rubber ring are clamped between the upper cylindrical top block and the upper end of the center block, and an outer positioning rubber ring and an inner positioning rubber ring are clamped between the lower cylindrical top block and the lower end of the center block. The upper cylindrical top block, the lower cylindrical top block, and the center block are provided with a central through hole with the same axis along the axial direction. The dummy valve pin is installed in the center block. The lower cylindrical top block has two first threaded holes along the axial direction, and the center block and the upper cylindrical top block have two bolt through holes corresponding to the two first threaded holes. The center block, the upper cylindrical top block and the lower cylindrical top block are connected and fixed by two screws. During the tightening of the two screws, the upper end of the center block and the upper cylindrical top block, and the lower end of the center block and the lower cylindrical top block respectively squeeze two outer positioning rubber rings and two inner positioning rubber rings. The squeezed inner positioning rubber rings are used to fix the dummy valve needle in the center through hole, and the squeezed outer positioning rubber rings are used to fix the locking module in the middle hole of the high gloss surface of the mold.

[0005] As a preferred embodiment of this utility model, the upper and lower surfaces of the central block are respectively provided with an outer embedding groove for embedding an outer positioning rubber ring and an inner embedding groove for embedding an inner positioning rubber ring. The depth of the outer embedding groove is less than the thickness of the outer positioning rubber ring, and the depth of the inner embedding groove is less than the thickness of the inner positioning rubber ring. After being squeezed and deformed, the outer positioning rubber ring is held against the inner wall of the middle hole of the high-gloss surface of the mold, and the inner positioning rubber ring is held against the dummy valve needle after being squeezed and deformed.

[0006] As a preferred embodiment of this invention, the upper cylindrical top block, the lower cylindrical top block, and the center block are all cylindrical in shape with the same diameter.

[0007] The beneficial effects of this invention are as follows: By adding a locking module for positioning the dummy valve needle, auxiliary processing work can be reduced, increasing efficiency and reducing costs. After polishing and removing the plug, the large surface with holes is perfectly formed. Attached Figure Description

[0008] Other objects and results of this invention will become more apparent and readily understood with reference to the following description taken in conjunction with the accompanying drawings, and with a more complete understanding of the invention. In the drawings:

[0009] Figure 1 This is a schematic diagram of the overall structure in this embodiment.

[0010] Figure 2 This is a cross-sectional view of the outer positioning rubber ring in this embodiment.

[0011] Figure 3 This is a schematic diagram of the outer positioning rubber ring and the upper cylindrical top block after being compressed in this embodiment.

[0012] Reference numerals: 1. Upper cylindrical top block; 2. Lower cylindrical top block; 3. Center block; 4. Dummy valve needle; 5. Outer positioning rubber ring; 6. Top holding end; 7. First threaded hole. Detailed Implementation

[0013] See Figure 1-3As shown, this embodiment provides a mold blind hole valve pin locking module, including: a locking module composed of an upper cylindrical top block 1, a lower cylindrical top block 2, and a center block 3; a dummy valve pin 4; and two outer positioning rubber rings 5 ​​and two inner positioning rubber rings (not shown). The two outer positioning rubber rings 5 ​​and the two inner positioning rubber rings are the same in shape but different in size. The center block 3 is located between the upper cylindrical top block 1 and the lower cylindrical top block 2 and is fixedly connected by bolts. An outer positioning rubber ring 5 and an inner positioning rubber ring are clamped between the upper ends of the upper cylindrical top block 1 and the center block 3, and an outer positioning rubber ring 5 and an inner positioning rubber ring are clamped between the lower ends of the lower cylindrical top block 2 and the center block 3. The upper cylindrical top block 1, the lower cylindrical top block 2, and the center block 3 are provided with a central through hole with the same axis along the axial direction. The dummy valve pin 4 is installed... The central through hole is fitted with a support end 6 extending outward at one end. The support end 6 is used to press against the intersection to be polished. The lower cylindrical top block 2 has two first threaded holes 7 along the axial direction. The central block 3 and the upper cylindrical top block 1 have bolt through holes (not shown) corresponding to the positions of the two first threaded holes 7. The central block 3, the upper cylindrical top block 1 and the lower cylindrical top block 2 are connected and fixed by two bolts. During the tightening of the two bolts, the upper end of the central block 3 and the upper cylindrical top block 1, and the lower end of the central block 3 and the lower cylindrical top block 2 respectively squeeze two outer positioning rubber rings 5 ​​and two inner positioning rubber rings. The squeezed inner positioning rubber rings are used to fix the dummy valve needle 4 in the central through hole. The squeezed outer positioning rubber rings 5 ​​are used to fix the locking module in the middle hole (hot runner sealing needle gate) of the high gloss surface of the mold.

[0014] Furthermore, in this embodiment, the upper and lower surfaces of the central block 3 are respectively provided with an outer embedding groove for embedding the outer positioning rubber ring 5 and an inner embedding groove for embedding the inner positioning rubber ring. The depth of the outer embedding groove is less than the thickness of the outer positioning rubber ring 5, and the depth of the inner embedding groove is less than the thickness of the inner positioning rubber ring. After being squeezed and deformed, the outer positioning rubber ring 5 is held against the inner wall of the middle hole of the high gloss surface of the mold, and after being squeezed and deformed, the inner positioning rubber ring is held against the dummy valve needle 4.

[0015] Furthermore, in this embodiment, the upper cylindrical top block 1, the lower cylindrical top block 2, and the center block 3 are all cylindrical with the same diameter.

[0016] Working principle: First, determine the size of the central hole (hot runner sealing pin gate). Then, select a locking module of suitable size. Place the dummy valve pin 4, used for plugging the hole, into the locking module and adjust the distance before inserting it into the central hole. Tighten the screws, clamping the center block 3 from both ends to expand the outer and inner positioning rubber rings 5. The expanded outer and inner positioning rubber rings 5 ​​and 5 will fix them into the central hole, and the central through hole will also be fixed, achieving the purpose of plugging the hole. The specific structure is as follows: the outer ring of the locking module and the central hole of the mold's glossy surface have a clearance fit. When the outer ring of the locking module is reinforced with an extruded outer positioning rubber ring, the outer ring of the locking module and the central hole of the mold's glossy surface have an interference fit. Similarly, the dummy valve pin and the central through hole of the locking module have a clearance fit. When the central through hole of the locking module is reinforced with an extruded inner positioning rubber ring, the central through hole of the locking module and the dummy valve pin have an interference fit.

[0017] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A mold blind hole valve needle locking module, characterized in that, include: The locking module consists of an upper cylindrical top block, a lower cylindrical top block, and a center block; a dummy valve needle; and two outer positioning rubber rings and two inner positioning rubber rings. The center block is located between the upper and lower cylindrical top blocks and is fixedly connected by bolts. An outer positioning rubber ring and an inner positioning rubber ring are clamped between the upper cylindrical top block and the upper end of the center block, and an outer positioning rubber ring and an inner positioning rubber ring are clamped between the lower cylindrical top block and the lower end of the center block. The upper, lower, and center blocks are all provided with a central through hole along the same axis. The dummy valve needle is installed in the central through hole with one end extending outwards. At the top end, the lower cylindrical top block has two first threaded holes along the axial direction. The center block and the upper cylindrical top block have two bolt through holes corresponding to the two first threaded holes. The center block, the upper cylindrical top block and the lower cylindrical top block are connected and fixed by two screws. During the tightening of the two screws, the upper end of the center block and the upper cylindrical top block, and the lower end of the center block and the lower cylindrical top block respectively squeeze two outer positioning rubber rings and two inner positioning rubber rings. The squeezed inner positioning rubber rings are used to fix the dummy valve needle in the center through hole, and the squeezed outer positioning rubber rings are used to fix the locking module in the middle hole of the high gloss surface of the mold.

2. A mold blind pin lock module according to claim 1, wherein, The upper and lower surfaces of the central block are respectively provided with an outer embedding groove for embedding an outer positioning rubber ring and an inner embedding groove for embedding an inner positioning rubber ring. The depth of the outer embedding groove is less than the thickness of the outer positioning rubber ring, and the depth of the inner embedding groove is less than the thickness of the inner positioning rubber ring. After being squeezed and deformed, the outer positioning rubber ring is held against the inner wall of the middle hole of the high-gloss surface of the mold, and the inner positioning rubber ring is held against the dummy valve needle after being squeezed and deformed.

3. The mold blind valve pin locking module of claim 1, wherein, The upper cylindrical top block, lower cylindrical top block, and center block are all cylindrical in shape with the same diameter.

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