Vacuum die-casting die for optical module

Abstract

The utility model discloses a vacuum die-casting die for an optical module, which is characterized in that a movable die and a static die move relatively in a first direction and have a die closing position and a die splitting position; at the mold closing position, a closed cavity is formed between the movable mold and the static mold; a closed matching cavity is formed in the static mold; the static mold is provided with a penetrating channel communicated with the matching cavity and the mold cavity; the insertion channel extends along a first direction; a top plate is arranged in the matching cavity; a penetrating piece is arranged on the top plate; the insertion piece is movably inserted into the insertion channel; the driving device is connected with the top plate and used for driving the top plate to move back and forth in the first direction. A first air channel communicated with the cavity is formed in the movable mold; a second air passage communicated with the matching cavity is formed in the static mold; the vacuumizing device is communicated with the first air channel and the second air channel. According to the utility model, the cavity and the matching cavity are vacuumized, so that the vacuum state of the whole structure is ensured, the processing requirement of the shell of the optical module is effectively met, and the practicability is strong.

Description

Technical Field

[0001] This utility model relates to the field of optical module processing equipment technology, and in particular to an optical module vacuum die casting mold. Background Technology

[0002] An optical module is an optoelectronic device that achieves photoelectric conversion. It generally consists of optoelectronic components, functional circuits, an optical interface, and a housing. In existing technology, liquid or semi-liquid metal is die-cast using a die-casting mold to form the housing of the optical module. During the die-casting process, the die-casting mold forms a closed cavity after closing, with the gate connected to the cavity. Air exists within the cavity, and when pouring from the gate, this air cannot escape, causing it to mix with the molten metal. After the molten metal solidifies, the remaining air inside the housing forms pores, compromising the strength and mechanical properties of the housing. Therefore, venting of the die-casting mold cavity is necessary. Furthermore, a supporting mechanism is installed on the die-casting mold to facilitate the die-casting operation of the housing. For example, after the housing is injection molded, an ejector mechanism on the die-casting mold lifts the housing for easy removal. This ejector mechanism moves between the inside and outside of the cavity, affecting the cavity's sealing performance and failing to guarantee a vacuum state. Utility Model Content

[0003] To address the aforementioned technical problems, the purpose of this utility model is to propose a vacuum die-casting mold for optical modules. By performing vacuuming operations on the cavity and mating cavity, the vacuum state of the overall structure is ensured, effectively meeting the processing requirements of the optical module's shell, and demonstrating strong practicality.

[0004] The technical solution of this utility model is achieved as follows: a vacuum die-casting mold for an optical module, comprising a moving mold, a stationary mold, a driving device, and a vacuum pumping device; the moving mold and the stationary mold move relative to each other in a first direction, having a mold-closing position and a mold-separating position;

[0005] At the mold closing position, a closed cavity is formed between the moving mold and the stationary mold;

[0006] The interior of the stationary mold forms a closed mating cavity; the stationary mold is provided with an insertion channel connecting the mating cavity and the mold cavity; the insertion channel extends along a first direction; a top plate is provided inside the mating cavity; a through-hole is provided on the top plate; the through-hole is movably inserted into the insertion channel;

[0007] The driving device is connected to the top plate and is used to drive the top plate to move back and forth in a first direction;

[0008] The moving mold is provided with a first air passage communicating with the cavity; the stationary mold is provided with a second air passage communicating with the mating cavity; the vacuum pumping device is connected to the first air passage and the second air passage respectively.

[0009] Furthermore, the moving mold or the stationary mold is provided with an annular first sealing ring; at the mold closing position, the first sealing ring on one of the moving mold and the stationary mold is in sealing contact with the end face of the other; the cavity is located inside the first sealing ring.

[0010] Furthermore, the second air passage has branch air passages; at the mold closing position, the branch air passages are connected to the mold cavity.

[0011] Furthermore, the insert is a pin; the pin is in clearance fit with the insertion channel; a plurality of pins are distributed on the top plate; and each pin has an insertion channel.

[0012] Furthermore, the moving mold is provided with a gate that communicates with the cavity.

[0013] Furthermore, the moving mold is provided with a moving mold core; the stationary mold is provided with a stationary mold core; at the mold closing position, the cavity is formed between the moving mold core and the stationary mold core.

[0014] Furthermore, the static mold includes a static template, a static pad, and a static base plate arranged sequentially in a first direction; annular second sealing rings are respectively provided between the static template and the static pad, and between the static pad and the static base plate; a through assembly space is provided on the static pad inside the two second sealing rings; the static template, the assembly space, and the static base plate together define the mating cavity.

[0015] Furthermore, the stationary base plate is provided with an inlet / outlet hole communicating with the mating cavity; the driving device has a driving end disposed in the inlet / outlet hole and moving along a first direction; the driving end of the driving device is connected to the top plate; when the top plate is in the starting position, the top plate covers the inlet / outlet hole.

[0016] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0017] 1. This utility model utilizes the combined use of the first and second air channels. The vacuum pumping device can perform vacuuming operations on the cavity and mating cavity through the first and second air channels to expel the air inside the cavity and mating cavity, thereby ensuring the vacuum state of the overall structure. This effectively meets the processing requirements of the optical module's shell and is highly practical.

[0018] 2. In this utility model, a branch air passage is arranged on the second air passage. The branch air passage is connected to the mold cavity so that the mold cavity and mating cavity can be evacuated through the second air passage, thereby increasing the exhaust speed of the mold cavity and mating cavity and improving the production and processing efficiency. It is highly practical.

[0019] 3. This utility model utilizes a driving device that moves the top plate through an inlet / outlet hole. Before the die-casting operation, the driving device moves the top plate to the starting position, sealing the inlet / outlet hole and thus enclosing the mating cavity. This combination ensures that the movement of the driving device and the vacuuming operation do not interfere with each other, effectively meeting the requirements of the vacuuming operation. Attached Figure Description

[0020] The technical solution of this utility model will be further described below with reference to the accompanying drawings:

[0021] Figure 1 This is a three-dimensional structural diagram of the overall structure of this utility model;

[0022] Figure 2 for Figure 1 A top view structural diagram;

[0023] Figure 3 for Figure 2 Sectional view at point AA;

[0024] Figure 4 for Figure 3 Enlarged view of point D in the image;

[0025] Figure 5 for Figure 2 Sectional view at point BB in the middle;

[0026] The components are: 1. Moving mold; 11. Moving mold core; 12. Gate; 21. Stationary mold plate; 211. Stationary mold core; 22. Stationary pad plate; 23. Stationary bottom plate; 231. Inlet / outlet; 232. Reinforcing plate; 233. Through-passage; 3. Cavity; 4. Mating cavity; 5. Top plate; 51. Ejector pin; 6. First air passage; 61. Gap passage; 7. Second air passage; 71. Branch air passage; 8. First sealing ring; 81. Second sealing ring; 9. Drive device. Detailed Implementation

[0027] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0028] like Figure 1-5The image shows a vacuum die-casting mold for an optical module according to this embodiment. This mold is used to die-cast metal components such as the outer shell of an optical module. The vacuum die-casting mold includes a moving mold 1, a stationary mold, a driving device 9, and a vacuum pumping device. The moving mold 1 is moved by a mold driving mechanism, causing relative movement between the moving mold 1 and the stationary mold in a first direction, resulting in a mold-closing position and a mold-parting position. In this embodiment, the first direction is the vertical direction. In the mold-closing position, a closed cavity 3 is formed between the moving mold 1 and the stationary mold. The outer shell of the optical module is formed within this cavity 3. Specifically, the moving mold 1 includes a moving mold 1 plate. A moving mold 1 core is embedded in the moving mold 1 plate. The stationary mold includes a stationary template 21, a stationary pad 22, and a stationary base plate 23 arranged sequentially in the first direction. A stationary mold core 211 is embedded in the stationary template 21. At the aforementioned mold closing position, the cavity 3 is formed between the moving mold core 1 and the stationary mold core 211, and a gap channel 61 is formed outside the cavity 3 between the stationary mold plate 21 and the moving mold plate 1. The gap channel 61 is connected to the cavity 3.

[0029] An annular first sealing ring 8 is arranged on either the moving mold plate 1 or the stationary mold plate 21. In the mold-closed position, the first sealing ring 8 on one of the moving mold plate 1 and the stationary mold plate 21 makes sealing contact with the end face of the other. The aforementioned slit channel 61 and cavity 3 are both located inside the first sealing ring 8. The sealing of the first sealing ring 8 forms a sealed space between the slit channel 61 and the cavity 3 in the mold-closed position. A gate 12 communicating with the cavity 3 is machined on the top of the upper plate of the moving mold 1. Liquid or semi-liquid metal can be injected into the cavity 3 through the gate 12. The dimensions of the slit channel 61 are designed to make it difficult for the liquid or semi-liquid metal injected into the cavity 3 to enter the slit channel 61.

[0030] In this embodiment, a closed mating cavity 4 is formed inside the stationary mold. Specifically, annular second sealing rings 81 are installed between the stationary template 21 and the stationary pad 22, and between the stationary pad 22 and the stationary bottom plate 23. A vertically penetrating assembly space is machined on the stationary pad 22 inside the two second sealing rings 81. The aforementioned stationary template 21 covers the top of this assembly space, and the stationary bottom plate 23 covers the bottom of the assembly space, thereby defining the mating cavity 4 together with the stationary template 21, the assembly space, and the stationary bottom plate 23. Several through-channels 233 are machined on the stationary template 21. These through-channels 233 extend vertically between the stationary template 21 and the stationary mold core 211 to connect the mating cavity 4 and the mold cavity 3.

[0031] A top plate 5 is installed within the mating cavity 4. The top plate 5 is movable in a first direction, moving towards or away from the moving mold 1. A guide rod is installed within the mating cavity 4, and the top plate 5 slides against the guide rod via a sliding sleeve. Insert plugs are fixedly installed on the top plate 5 corresponding to each insertion channel 233. These insert plugs movably insert into the insertion channels 233. Movement of the top plate 5 allows the insert plugs to extend through the insertion channels 233 into the cavity 3, or retract into the insertion channels 233. The insert plugs are clearance-fitted with the insertion channels 233 to prevent liquid or semi-liquid metal from entering the insertion channels 233. Preferably, the insert plug is an ejector pin 51. The ejector pin 51 is clearance-fitted with the insertion channels 233. The insert plugs can also be associated components of existing die-casting operations.

[0032] In this embodiment, the aforementioned driving device 9 is connected to the top plate 5 to drive the top plate 5 to move back and forth in the first direction. The driving device 9 can be installed inside or outside the mating cavity 4. In this embodiment, the driving device 9 is arranged outside the mating cavity 4. In a specific structural design, a reinforcing plate 232 is fixed on the stationary bottom plate 23 inside the mating cavity 4. The aforementioned top plate 5 is arranged above the reinforcing plate 232. An inlet / outlet hole is machined on the stationary bottom plate 23, which penetrates the stationary bottom plate 23 and the reinforcing plate 232 to communicate with the mating cavity 4. The inlet / outlet hole is located inside the second sealing ring 81. The aforementioned driving device 9 has a driving end arranged in the inlet / outlet hole and moving in the first direction. The driving end of the driving device 9 is connected to the top plate 5. The top plate 5 moves in the first direction to have a starting position and a lifted position. In the starting position, the insert retracts into the insertion channel. In the lifted position, the insert protrudes into the cavity 3. When the top plate 5 is in the initial position, it covers the inlet and outlet holes, thereby sealing the mating cavity 4. The drive device 9 is preferably a hydraulic cylinder of the prior art.

[0033] The moving mold plate 1 has a first air passage 6 connected to the cavity 3. An air nozzle connected to the first air passage 6 is installed on the moving mold plate 1. The stationary mold plate 21 has a second air passage 7 connected to the mating cavity 4. An air nozzle connected to the second air passage 7 is installed on the stationary mold plate 21. The two sets of air nozzles are arranged on the same side of the vacuum die-casting mold. The aforementioned vacuuming device is connected to the first air passage 6 and the second air passage 7 via air nozzles. Two sets of the vacuuming device can be arranged, one connected to the first air passage 6 and the other connected to the second air passage 7, to perform vacuuming operations on the cavity 3 and the mating cavity 4 respectively. Alternatively, the vacuuming device can be a single set, connected to both the first air passage 6 and the second air passage 7, to simultaneously perform vacuuming operations on the cavity 3 and the mating cavity 4. The aforementioned vacuuming device is a conventional device of the prior art.

[0034] In this embodiment, the second air passage 7 has a branch air passage 71 in its specific structural design. The branch air passage 71 extends on the stationary template 21, and one end of it forms an open end on the end face of the stationary template 21. When the moving mold 1 and the fixed mold are in the mold-closed position, the open end of the branch air passage 71 communicates with the cavity 3. Through the connection of the branch air passage 71, the mating cavity 4 and the cavity 3 can be connected.

[0035] In practical use, during mold closing, the vacuuming device uses the first air passage 6 and the second air passage 7 to perform vacuuming operations on the cavity 3 and mating cavity 4, thereby expelling the air from within them. The branch air passage 71 is connected to the cavity 3, allowing for vacuuming of the cavity 3 and mating cavity 4 via the second air passage 7, thus increasing the exhaust speed of the cavity 3 and mating cavity 4. Before vacuuming, the drive device 9 moves the top plate 5 to the starting position, sealing the inlet and outlet holes and thus sealing the mating cavity 4. After die casting is completed, after mold separation, the drive device 9 drives the top plate 5 upwards, ejecting the molded part from the cavity 3 via the ejector pin 51. This combination ensures a vacuum state for the entire structure, effectively meeting the processing requirements of the optical module's outer shell. The movement of the drive device 9 and the vacuuming operation do not interfere with each other, effectively meeting the vacuuming requirements.

[0036] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A vacuum die-casting mold for an optical module, comprising a moving mold, a stationary mold, a driving device, and a vacuum pumping device; wherein the moving mold and the stationary mold move relative to each other in a first direction, having a mold-closing position and a mold-parting position; characterized in that: At the mold closing position, a closed cavity is formed between the moving mold and the stationary mold; The interior of the stationary mold forms a closed mating cavity; the stationary mold is provided with an insertion channel connecting the mating cavity and the mold cavity; the insertion channel extends along a first direction; a top plate is provided inside the mating cavity; a through-hole is provided on the top plate; the through-hole is movably inserted into the insertion channel; The driving device is connected to the top plate and is used to drive the top plate to move back and forth in a first direction; The moving mold is provided with a first air passage communicating with the cavity; the stationary mold is provided with a second air passage communicating with the mating cavity; the vacuum pumping device is connected to the first air passage and the second air passage respectively.

2. The optical module vacuum die-casting mold according to claim 1, wherein: The moving mold or the stationary mold is provided with an annular first sealing ring; at the mold closing position, the first sealing ring on one of the moving mold and the stationary mold is in sealing contact with the end face of the other; the cavity is located inside the first sealing ring.

3. The optical module vacuum die-casting mold according to claim 1, wherein: The second air passage has branch air passages; at the mold closing position, the branch air passages are connected to the cavity.

4. The optical module vacuum die-casting mold according to claim 1, wherein: The insert is a pin; the pin is fitted with the insertion channel with a clearance; a plurality of pins are distributed on the top plate; and each pin has an insertion channel.

5. The optical module vacuum die-casting mold according to claim 1, wherein: The moving mold is provided with a gate that communicates with the cavity.

6. The optical module vacuum die-casting mold according to claim 1, wherein: The moving mold is provided with a moving mold core; the stationary mold is provided with a stationary mold core; at the mold closing position, the cavity is formed between the moving mold core and the stationary mold core.

7. The optical module vacuum die-casting mold according to claim 1, wherein: The stationary mold includes a stationary template, a stationary pad, and a stationary base plate arranged sequentially in a first direction; annular second sealing rings are respectively provided between the stationary template and the stationary pad, and between the stationary pad and the stationary base plate; a through assembly space is provided on the stationary pad inside the two second sealing rings; the stationary template, the assembly space, and the stationary base plate together define the mating cavity.

8. The optical module vacuum die-casting mold according to claim 7, wherein: The stationary base plate is provided with an inlet and outlet hole communicating with the mating cavity; the driving device has a driving end disposed in the inlet and outlet hole and moving in a first direction; the driving end of the driving device is connected to the top plate; when the top plate is in the starting position, the top plate covers the inlet and outlet hole.

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