Mining enclosure housing, enclosure, sensor, and mining enclosure housing manufacturing process

Abstract

The present application relates to the technical field of mining shell, and more particularly to a mining shell body, a shell, a sensor and a manufacturing process of the mining shell body, which comprises an outer shell body; an inner shell body is injection molded in the outer shell body, and a fillet part is arranged on the inner shell body; an arc support part is concave and arranged corresponding to the fillet part of the inner shell body; and a reinforcing bottom sheet is connected with the arc support part and the bottom surface of the outer shell body. The arc support part can support the inner shell body and help the fillet part resist the shrinkage force transmitted by the sidewall of the inner shell body. The bonding force between the reinforcing bottom sheet and the bottom surface of the outer shell body can cooperate with the arc support part, be dispersed on the fillet part in the height direction, and further resist the shrinkage force transmitted by the sidewall of the inner shell body. The inner support sheet can strengthen the arc support part, increase the bonding force between the arc support part and the outer shell body, support the arc support part and the fillet part, and reduce the possibility of cracking or separation of the fillet part from the outer shell body.

Description

Technical Field

[0001] This invention relates to the field of mining housing technology, and in particular to a mining housing shell, a housing, a sensor, and a manufacturing process for the mining housing shell. Background Technology

[0002] Mining electronic equipment operates in harsh environments, and the complex underground coal mine environment poses challenges to the IP protection, strength, and electromagnetic shielding performance of the electronic equipment enclosure. In addition, GB / T 3836-2021 also imposes stringent testing requirements on equipment enclosures in explosive environments, including impact resistance, drop resistance, flame retardancy, heat resistance, cold resistance, and high and low temperature impact.

[0003] Mining metal casings are generally made of stainless steel using welding or stretching processes. However, the internal waterproof sealing structure and the installation studs exhibit poor consistency in manufacturing processes, making it difficult to guarantee protective performance. Furthermore, to meet strength requirements, metal casings need to maintain a certain wall thickness, resulting in significant weight. Mining plastic casings suffer from drawbacks such as low structural strength, poor electromagnetic shielding performance, and the need for flame-retardant modification. With increasingly stringent requirements for the stability of mining equipment in coal mine safety production, there is an urgent need for a composite waterproof casing suitable for mining electronic equipment that combines advantages such as strength, protection, lightweight, good consistency, stability, reliability, and strong environmental adaptability.

[0004] Nano-injection molding is a new technology that achieves a strong bond between plastic and metal. Injection molding requires the use of a T-process to form nanoscale pores on the metal surface, and then plastic is injected into the nanopores, using the anchoring effect to achieve the plastic-metal bond.

[0005] Nano-injection molding requires nanoscale plastics to possess high fluidity and low shrinkage. Injection conditions involve high mold temperature and high pressure. Metal parts must be preheated before injection to ensure the molded material can quickly fill the nanopores before cooling. Furthermore, pre-processed stretching structures must be provided on the metal parts to enhance the bond between the plastic and metal. After injection molding, the product requires prolonged annealing and baking to eliminate internal stresses between the metal and plastic. In summary, nano-injection molding is complex, involves numerous steps, and is costly, hindering its widespread adoption.

[0006] Currently, nano-injection molding technology is mainly used in planar thin-walled structures such as lithium battery covers and mobile phone casings. These products require small injection volumes, and injection shrinkage is limited to a two-dimensional direction. The bonding between metal and plastic is enhanced through a stretching structure, making the molding process relatively simple. However, the structure of large, deep-frame waterproof casings is more complex. In addition to the simple molding of mounting studs, complex sealing and protective structures are also required. Especially in deep-frame waterproof casings, the rounded corners are subject to shrinkage stress from the sidewalls, causing separation between the plastic rounded corners and the casing. Summary of the Invention

[0007] To address the technical problems in the prior art, the present invention provides a mining housing, a housing, a sensor, and a manufacturing process for the mining housing.

[0008] The technical solution adopted by the present invention to solve its technical problem is as follows: a mining outer shell, comprising an outer shell; an inner shell, wherein the inner shell is injection molded into the outer shell and the inner shell has rounded corners; an arc-shaped support portion, wherein the arc-shaped support portion is recessed and corresponds to the rounded corners of the inner shell; a reinforcing bottom plate, wherein the reinforcing bottom plate is connected to both the arc-shaped support portion and the bottom surface of the outer shell, and the reinforcing bottom plate is not connected to the inner shell; and an inner support plate, wherein the inner support plate is disposed between the arc-shaped support portion and the inner shell and is located at the bottom of the arc-shaped support portion, and the inner support plate is connected to the inner shell, the arc-shaped support portion and the outer shell.

[0009] The mining outer shell of this invention features an arc-shaped support portion that supports the inner shell, helping the rounded corners resist the contraction force transmitted from the inner shell's sidewalls. The bonding force between the reinforcing base plate and the bottom surface of the outer shell works in conjunction with the arc-shaped support portion, distributing it along the height direction across the rounded corners to further resist the contraction force transmitted from the inner shell's sidewalls. Simultaneously, the reinforcing base plate is not connected to the inner shell, preventing the transfer of its own contraction stress to the inner shell and avoiding exacerbating the contraction force on the arc-shaped support portion. The arc-shaped support portion can utilize the full bonding force of the reinforcing base plate's plastic to resist the contraction force it bears. Furthermore, the inner support plate strengthens the arc-shaped support portion, increasing the bonding force between the arc-shaped support portion and the outer shell, and also supports both the arc-shaped support portion and the rounded corners, helping the rounded corners resist the contraction force of the inner shell's sidewalls and reducing the possibility of cracking or separation from the outer shell.

[0010] Furthermore, a cover stud is connected to the inner support plate, and a first embedded nut is provided inside the cover stud. The first embedded nut is adapted to be connected to the cover plate. The cover stud is connected to the arc support part by a reinforcing rib. The reinforcing ribs are arranged in pairs.

[0011] Through the above solution, the reinforcing rib can support the arc support part and enhance the structural strength of the cap stud. Since the reinforcing rib is not connected to the rounded corner, it will not increase the shrinkage force borne by the rounded corner.

[0012] Furthermore, the inner shell is provided with a first wrapping layer, which is connected to the end face of the outer shell.

[0013] The above solution increases the bonding area between the metal and plastic by using the first wrapping layer, providing tensile stress to the rounded corners around the perimeter to resist shrinkage. In addition, the first wrapping layer can serve as a mounting surface for connection with the cover plate. The flatness of the plastic-molded first wrapping layer as a mounting surface is higher than that of the outer shell end face, which can reduce the requirements for the flatness of the outer shell end face and reduce the processing difficulty of the outer shell.

[0014] Furthermore, a shrinkage groove is provided on the inner side of the arc portion, and the shrinkage groove is arranged along the height direction.

[0015] The above solution reduces the wall thickness of the arc portion locally by using a shrinkage groove. Since the bonding force only applies at the interface between the outer shell and the inner shell, reducing the wall thickness locally will not affect the bonding force at that point, but it can reduce the inherent shrinkage force generated by injection molding at that point.

[0016] Furthermore, the reinforcing base plate has a protruding part on its side, and the protruding part is connected to the bottom surface of the outer shell.

[0017] Through the above scheme, the ejector part can increase the bonding force between the reinforcing plate and the bottom surface of the outer shell, and facilitate the ejector pin to abut against it. Compared with the ejector pin directly abutting against the bottom surface of the outer shell, the load-bearing capacity of the ejector part after being combined with the bottom surface of the outer shell is stronger, and the outer shell is less likely to deform.

[0018] Furthermore, the inner shell end face is provided with waterproof ribs, which are arranged around the circumference of the inner shell and are in a closed state. The waterproof ribs are suitable for cooperating with the cover plate.

[0019] Through the above technical solution, the waterproof reinforcement can be easily matched with the cover plate, improving the stability and sealing of the connection between the outer shell and the cover plate.

[0020] Furthermore, the reinforcing base plate is provided with an injection-molded nut portion, and a second embedded nut is provided inside the injection-molded nut portion. The second embedded nut is in hard contact with the inner bottom surface of the outer shell, and the second embedded nut is adapted to be connected to the circuit board.

[0021] With the above solution, the injection-molded nut part can be used to fix the second embedded nut to the outer shell through injection molding. The hard contact between the second embedded nut and the inner bottom surface of the outer shell facilitates the conduction between the outer shell and the second embedded nut. Since the second embedded nut is used to install the circuit board later, it is easier to achieve the conduction between the outer shell and the circuit board. This allows the circuit board to be grounded through the metal outer shell, which can improve the electromagnetic compatibility of the internal electronic components.

[0022] Furthermore, a spring is provided inside the injection-molded nut. The spring makes hard contact with both the second embedded nut and the outer shell, so that the second embedded nut and the outer shell are connected. At the same time, the spring has a buffering effect and can reduce the requirements for the assembly and manufacturing precision of the second embedded nut. In particular, it reduces the flatness requirements of the four second embedded nuts, eliminating the need to ensure that the four embedded nuts are in the same plane, which can be achieved by using the spring.

[0023] The above solution utilizes a spring to achieve effective conductivity between the second embedded nut and the outer casing, avoiding contact failure caused by dimensional fluctuations in the second embedded nut.

[0024] Furthermore, the outer casing is provided with a transparent window, and a transparent observation window is also connected to the outer casing. The transparent observation window covers the transparent window and fits against the outer surface of the outer casing. The transparent observation window is provided with a sealing groove, and an observation window sealing ring is provided in the sealing groove.

[0025] Furthermore, the viewing window is provided with a hot-pressed cylinder, and the bottom surface of the outer shell is provided with a hot-pressed hole for the hot-pressed cylinder to pass through. The hot-pressed hole is arranged around the viewing window, and the part of the hot-pressed cylinder that passes through the hot-pressed hole is deformed by hot pressing and anchored to the inner surface of the outer shell.

[0026] Furthermore, the first inlaid nut is welded to the inner bottom surface of the outer casing.

[0027] By welding the first inlaid nut to the inner surface of the outer shell, the first inlaid nut can support the cap stud, thereby supporting the arc support and the rounded corner, and helping to withstand the contraction force on the rounded corner. The contraction force on the rounded corner is not greater than the bonding force between the rounded corner and the outer shell.

[0028] Furthermore, a window support sheet is injection molded on the perspective window, and the hot-pressing hole is located on the window support sheet.

[0029] By setting the hot-pressing holes on the window support piece, no holes are needed on the outer shell, reducing the production difficulty of the outer shell. At the same time, the flatness of the plastic-molded window support piece is higher than that of the outer shell, and the fixation of the viewing window is more reliable.

[0030] Furthermore, the transparent support sheet is connected to the reinforcing base sheet.

[0031] By using the above method, the connection between the window support piece and the reinforcing base piece can increase the support force on the arc support part, and at the same time increase the overall strength of the inner shell.

[0032] Furthermore, the transparent window support piece is provided with a transparent window fitting ring, which is fitted to the side wall of the transparent window.

[0033] Through the above technical solution, the window bonding ring can increase the bonding force between the window support sheet and the outer shell, and increase the strength and stability of the window support sheet.

[0034] A mining outer shell cover plate, used in conjunction with the aforementioned mining outer shell, includes a cover plate body connected to the outer shell body.

[0035] Furthermore, the cover plate body has a side edge along its circumference; the cover plate body has a plastic skeleton, which is simultaneously set in close contact with both the cover plate body and the side edge; a second wrapping layer is connected to the plastic skeleton, the second wrapping layer is connected to the end of the side edge away from the cover plate body, and the second wrapping layer is adapted to abut against the outer shell.

[0036] Furthermore, the plastic skeleton is provided with a sealing groove, which is arranged around the circumference of the cover plate to form a closed ring, and a sealing ring is provided inside the sealing groove.

[0037] Furthermore, the cover plate has rounded corners at all four corners, screw holes on the cover plate, and screw connection parts in the sealing groove. The screw connection parts are positioned close to the rounded corners and have interconnected connecting holes and countersunk holes, which are coaxial with the screw holes. The sealing ring has clearance holes, and the screw connection parts are located in the clearance holes.

[0038] The above solution involves setting connection holes and countersunk holes on the plastic frame, which makes it easier to sink the bolt heads connecting the housing and the cover plate into the countersunk holes, thus improving the overall aesthetics.

[0039] Furthermore, the plastic frame is also provided with reinforcing blocks, which are connected to the cover plate body. There are four reinforcing blocks, which are located at the middle of each side of the cover plate body.

[0040] Through the above technical solution, the reinforcing block facilitates the bonding force between the plastic skeleton and the cover plate, while also increasing the strength of the plastic skeleton. Simultaneously, the reinforcing block, located at the weld line, enhances venting and facilitates the flow of molten plastic during injection molding.

[0041] A mining shell includes the aforementioned mining shell housing and a cover plate connected to the mining shell housing.

[0042] A calibration device that uses the aforementioned mining casing as its outer shell.

[0043] A manufacturing process for a mining outer shell, based on the above-mentioned mining outer shell, includes the following steps:

[0044] S1. Stamping: Stamping a metal sheet to obtain the outer shell;

[0045] S2. Chemical treatment: The inner surface of the outer shell is treated with a chemical solution to form nanoscale pores.

[0046] S3. Preheating: Place the outer shell into the mold and preheat it through the mold;

[0047] S4. Injection molding: Injection molding is performed on the inner surface of the outer shell to obtain the inner shell.

[0048] S5. Demolding: Remove the outer shell from the mold.

[0049] S6. Machining: Remove the gate on the outer casing by machining.

[0050] S7. Polishing: Polishing and brushing the outer casing;

[0051] S8. Cleaning: Ultrasonic cleaning of the outer casing;

[0052] S9. The perspective observation window is hot-melted and assembled onto the outer casing by hot-melting.

[0053] Using the above technical solution, after the inner shell is formed and cooled, the outer shell undergoes surface brushing and polishing, followed by ultrasonic cleaning in warm water. During the surface brushing and polishing process, the localized instantaneous high temperature on the outer surface of the outer shell can be conducted from the outside to the nanopores of the inner wall, without affecting the plastic body of the inner shell. This localized instantaneous high temperature helps eliminate surface stress between the metal substrate and the plastic. After brushing and polishing, ultrasonic cleaning is performed in warm water. The ultrasonic vibration during the ultrasonic cleaning process increases the crystallinity of the nano-crystalline plastic (PBT or PPS), improving its dimensional stability. By utilizing the post-processing steps of surface polishing and brushing followed by ultrasonic cleaning, the appearance of the outer shell can be guaranteed, and the long-term high-temperature baking process in traditional nano-injection molding can be eliminated, greatly improving production efficiency.

[0054] Furthermore, during injection molding, the injection port is located at the rounded corner, with each rounded corner corresponding to one injection port. After the inner shell is formed, the injection port is cut off.

[0055] By employing the aforementioned technical solution, the injection gate is positioned near the rounded corners, enhancing the bonding strength between the rounded corners and the outer shell, and helping to resist the shrinkage stress transmitted from the inner shell sidewalls. Nano-injection molding requires high plastic flowability to ensure the injection-molded material rapidly fills the nano-voids before cooling. Because the plastic at the injection gate has just entered the outer shell and has not yet been cooled by the mold temperature, its flowability is stronger, resulting in better bonding strength at the gate. Furthermore, the multiple rounded corners and multiple injection gates reduce filling and plastic cooling time, improving plastic flowability and bonding strength.

[0056] Furthermore, during injection molding, the first parting line of the mold is set along the side wall, rounded corner, and arc support of the inner shell.

[0057] The above technical solution can enhance injection molding venting and improve bonding strength. By setting the first parting line along the side wall, rounded corners, and arc support of the inner shell, a larger venting area can be provided for residual gas inside the outer shell cavity. The residual gas inside the outer shell cavity can be smoothly discharged along the flow direction of plastic injection, avoiding air entrapment problems and ensuring a tight bond between the injection molded colloid and the nanopores, thus enhancing bonding strength.

[0058] Furthermore, during injection molding, the mold is provided with ejector pins, which are adapted to abut against the ejector portion.

[0059] Furthermore, during injection molding, the mold is provided with a limiting rod, which is arranged circumferentially on the end face of the outer shell. The limiting rod is provided with a first step, a second step and a third step. The first step abuts against the end face of the outer shell, the second step is adapted to be inserted into the inner shell, and the third step is adapted to abut against the end face of the waterproof rib. After the inner shell is formed, when the second step is pulled out from the inner shell, an empty groove is formed on the inner shell.

[0060] With the above technical solution, during nano-injection molding, the outer shell needs to be placed in the mold before injection molding; positional deviations can lead to injection separation problems. The limiting rods, arranged circumferentially on the end face of the outer shell, can ensure the positioning accuracy between the outer shell and the inner shell as much as possible. The limiting rods also help with venting, preventing air trapping within the nanoscale pores, thus improving injection molding quality and bonding strength.

[0061] Furthermore, during injection molding, the mold is provided with an ejector rod, which is arranged circumferentially on the end face of the outer shell; the ejector rod is provided with a fourth step, a fifth step and a sixth step, the fourth step abuts against the end face of the outer shell, the fifth step is adapted to abut against the wrapping layer, and the sixth step is adapted to abut against the end face of the waterproof rib.

[0062] Through the above technical solution, the ejector rod can assist in supporting the outer shell, further improving the positioning accuracy between the outer shell and the inner shell. At the same time, it facilitates the ejection of the injection-molded outer shell from the mold. In addition, the ejector rod can also help vent air, avoid air entrapment in the nanopores, and enhance the bonding strength.

[0063] Furthermore, during preheating, the mold is provided with a sleeve that matches the second embedded nut. When the mold is closed, the sleeve presses against the second embedded nut, causing the second embedded nut to press against the outer shell, thereby causing the outer shell to press against the mold core in the mold, so that the mold core with high heat can quickly heat the outer shell.

[0064] With the above technical solution, after the mold is closed, the ejector sleeve presses against the outer shell, so that the shell and the mold core can be effectively pressed and limited, ensuring that the outer shell is rapidly heated by the high-temperature mold core inside the mold. This eliminates the need for separate preheating of metal parts outside the mold in traditional nano-injection molding processes, greatly improving production efficiency.

[0065] Furthermore, during preheating, a spring is installed at the top of the ejector sleeve. When the mold is closed, the spring simultaneously makes hard contact with the second embedded nut and the inner bottom surface of the outer shell. After injection molding, the spring is embedded in the injection nut part.

[0066] Furthermore, after the outer shell is demolded, it is subjected to uniform temperature shaping by a uniform temperature cooling and shaping fixture. The uniform temperature cooling and shaping fixture includes a uniform temperature inner core and a uniform temperature cover. The uniform temperature inner core is inserted into the inner shell and fits snugly against the inner shell. The uniform temperature cover is in hard contact with the bottom surface of the main shell and is connected to the uniform temperature inner core by bolts.

[0067] Through the above technical solution, after the outer shell and inner shell are demolded, the overall temperature is relatively high. During the cooling process, the outer shell, being metal, has high thermal conductivity and a large contact area with air, thus cooling quickly. The inner shell, being plastic, has poor thermal conductivity and a small contact area with air, thus cooling slowly. Simultaneously, the inner shell sidewalls with a smaller plastic volume cool quickly, while the rounded corners with a larger plastic volume cool slowly. This difference in cooling rate leads to a difference in shrinkage, causing overall concave deformation of the shell and exacerbating the shrinkage force at the rounded corners. Therefore, after the inner shell is fitted with the temperature-regulating inner core, bolts are used to fix the temperature-regulating inner core, outer shell, and temperature-regulating cover together. The temperature-regulating inner core accelerates the cooling of the inner shell, thereby ensuring that the cooling rates of the outer and inner shells are consistent and reducing shrinkage stress. Furthermore, the temperature-regulating shaping fixture also ensures the overall dimensional stability of the outer and inner shells and provides support.

[0068] Furthermore, during the hot-melt assembly of the viewing window, the viewing window sealing ring is placed in the sealing groove, the hot-pressed cylinder is passed through the pre-reserved hot-pressing hole on the outer shell, and the viewing window is made to fit against the outer shell. Then, the part of the hot-pressed cylinder that passes through the hot-pressing hole is pressed by the hot-pressing plate, so that the diameter of the part of the hot-pressed cylinder that passes through the hot-pressing hole increases and makes hard contact with the inner bottom surface of the outer shell, so as to fix the viewing window to the outer shell.

[0069] The beneficial effects of this invention are:

[0070] 1. The rounded support section supports the inner shell, helping the rounded corners resist the contraction force transmitted from the inner shell's sidewalls. The bonding force between the reinforcing plate and the bottom surface of the outer shell works in conjunction with the rounded support section, distributing the force along the height of the rounded corners to further resist the contraction force transmitted from the inner shell's sidewalls. Simultaneously, the reinforcing plate is not connected to the inner shell, preventing the transfer of its own contraction stress to the inner shell and avoiding exacerbating the contraction force on the rounded support section. The rounded support section can utilize the entire bonding force between the reinforcing plate and the outer shell to resist the contraction force it bears. Furthermore, the inner support plate strengthens the rounded support section, increasing the bonding force between it and the outer shell; it also supports both the rounded support section and the rounded corners, helping the rounded corners resist the contraction force of the inner shell's sidewalls and reducing the possibility of cracking or separation from the outer shell.

[0071] 2. The composite double-layer shell based on nano-injection molding has the advantages of high strength, light weight, good protection performance, good production consistency, excellent electromagnetic shielding performance and simple production process, making it very suitable for use in electronic equipment in coal mines.

[0072] 3. By utilizing a combination of in-mold preheating, cooling and uniform temperature shaping, wire drawing and polishing, and ultrasonic cleaning, the process of nano-injection molding is simplified while ensuring bonding strength. This includes processes such as preheating of external metal parts and high-temperature baking, which shortens the processing cycle and reduces processing difficulty. Attached Figure Description

[0073] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0074] Figure 1 This is a schematic diagram illustrating the overall structure of the mining outer shell in this invention.

[0075] Figure 2 This is an exploded structural diagram illustrating the perspective observation window in this invention.

[0076] Figure 3 This is a schematic diagram illustrating the structure of the hot-pressed cylinder after it has been hot-pressed in this invention.

[0077] Figure 4 This is a cross-sectional structural diagram illustrating the first wrapping layer in this invention.

[0078] Figure 5 This is a schematic diagram illustrating the structure of the transparent window support sheet in this invention.

[0079] Figure 6 This is a schematic diagram illustrating the overall structure of the mining outer shell cover plate in this invention.

[0080] Figure 7 This is an exploded structural diagram illustrating the plastic skeleton and sealing ring in this invention.

[0081] Figure 8 This is a partial structural diagram illustrating the screw hole, connecting hole, and countersunk hole in this invention.

[0082] Figure 9 This is a schematic diagram of a partial cross-sectional structure illustrating the second wrapping layer in this invention.

[0083] Figure 10 This is a schematic diagram illustrating the structure of the mining shell in this invention.

[0084] Figure 11 This is a schematic diagram illustrating the structure of the ejector sleeve and ejector pin in this invention.

[0085] Figure 12 This is a schematic diagram illustrating the structure of the limiting rod in this invention.

[0086] Figure 13 This is a schematic diagram illustrating the structure of the ejector rod in this invention.

[0087] Figure 14 This is a schematic diagram illustrating the structure of the first parting line in this invention.

[0088] Figure 15 This is a schematic diagram illustrating the structure of the tube in this invention.

[0089] Figure 16 This is a schematic diagram illustrating the structure of the uniform temperature cooling and shaping fixture in this invention.

[0090] Figure 17 This is a schematic diagram illustrating the structure of the push plate, top block, and push pin in this invention.

[0091] Figure 18 This is a schematic diagram illustrating the structure of the second parting line in this invention.

[0092] Figure 19 This is a schematic diagram illustrating the structure of the first and second top-loading rods in this invention.

[0093] In the diagram: 1. Outer shell; 11. Transparent window; 12. Hot-pressed hole; 13. Transparent observation window; 131. Sealing groove; 132. Observation window sealing ring; 133. Hot-pressed cylinder; 2. Inner shell; 31. Rounded corner; 311. Shrinkage groove; 32. Arc support; 33. Reinforcing base plate; 331. Ejector; 332. Injection nut; 333. Second inlaid nut; 34. Inner support plate; 341. Cover stud; 342. First inlaid nut; 343. Reinforcing rib; 35. First wrapping layer; 36. Waterproof rib; 37. Transparent window support plate; 38. Transparent window fitting ring; 4. Cover plate; 41. Side; 411. Screw hole; 42. Plastic 421. Skeleton; 422. Second Encasing Layer; 422. Screw Connection; 4221. Connecting Hole; 4222. Countersunk Hole; 423. Reinforcing Block; 424. Sealing Groove; 425. Sealing Ring; 4251. Clearance Hole; 5. Limiting Rod; 51. First Step; 52. Second Step; 53. Third Step; 6. Ejector Rod; 61. Fourth Step; 62. Fifth Step; 63. Sixth Step; 7. Ejector Pin; 71. Ejector Sleeve; 72. First Parting Line; 73. Irradiated Inner Core; 74. Irradiated Cover; 75. Second Parting Line; 761. Push Plate; 762. Ejector Block; 763. Ejector Pin; 771. First Ejector Rod; 772. Second Ejector Rod; 78. Gate. Detailed Implementation

[0094] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0095] In a first aspect, the present invention discloses a mining outer shell.

[0096] Reference Figures 1 to 4 A mining outer shell includes an outer shell 1 and an inner shell 2. The inner shell 2 is injection molded inside the outer shell 1. The inner shell 2 has rounded corner portions 31 and arc-shaped support portions 32. The arc-shaped support portions 32 are recessed and opposite to the rounded corner portions 31. There are four sets of rounded corner portions 31 and arc-shaped support portions 32. A reinforcing bottom plate 33 is integrally formed at the bottom of the arc-shaped support portion 32. The reinforcing bottom plate 33 is injection molded to the inner bottom surface of the outer shell 1, but is not connected to the side wall of the inner shell 2. An inner support plate 34 is integrally formed between the arc-shaped support portion 32 and the inner shell 2. The inner support plate 34 is located at the bottom of the arc-shaped support portion 32 and is injection molded to the inner bottom surface of the outer shell 1. The outer shell 1 can be made of 304 stainless steel with a wall thickness of 1-1.5 mm.

[0097] The arc-shaped support portion 32 supports the inner shell 2, helping the rounded corner portion 31 resist the contraction force transmitted from the side wall of the inner shell 2. The bonding force between the reinforcing base plate 33 and the bottom surface of the outer shell 1 works in conjunction with the arc-shaped support portion 32, distributing it along the height direction to the rounded corner portion 31, further resisting the contraction force transmitted from the side wall of the inner shell 2. Simultaneously, the reinforcing base plate 33 is not connected to the inner shell 2, preventing the transmission of its own contraction stress to the inner shell 2, thus avoiding exacerbating the contraction force on the arc-shaped support portion 32. The arc-shaped support portion 32 can utilize the entire bonding force between the reinforcing base plate 33 and the outer shell 1 to resist the contraction force it bears. Furthermore, the inner support plate 34 strengthens the arc-shaped support portion 32, increasing the bonding force between the arc-shaped support portion 32 and the outer shell 1, and also supports both the arc-shaped support portion 32 and the rounded corner portion 31, helping the rounded corner portion 31 resist the contraction force of the side wall of the inner shell 2, reducing the possibility of cracking or separation of the rounded corner portion 31 from the outer shell 1.

[0098] An integrally formed capping stud 341 is formed on the inner support plate 34. A first embedded nut 342 is provided inside the capping stud 341, which is adapted to connect with the cover plate. During injection molding, the positions of the outer shell 1 and the first embedded nut 342 are first determined by the mold, and then the capping stud 341 is formed by injection molding. At this time, the first embedded nut 342 is also covered and fixed by the capping stud 341. The capping stud 341 is connected to the arc-shaped support portion 32 by reinforcing ribs 343, and the reinforcing ribs 343 are arranged in pairs. The reinforcing ribs 343 can support the arc-shaped support portion 32 and enhance the structural strength of the capping stud 341. Since the reinforcing ribs 343 are not connected to the rounded corner portion 31, they do not increase the contraction force borne by the rounded corner portion 31. In this embodiment, there are four sets of capping studs 341 and first embedded nuts 342, located at the four corner points of the inner shell 2.

[0099] The inner shell 2 has an integrally formed first covering layer 35. The first covering layer 35 is injection molded to the end face of the outer shell 1. The first covering layer 35 increases the bonding area between the metal and the plastic, and provides tensile stress to the rounded corners 31 around the perimeter to resist shrinkage. In addition, the first covering layer 35 can serve as a mounting surface for connection with the cover plate. The flatness of the plastic-molded first covering layer 35 as a mounting surface is higher than that of the end face of the outer shell 1, which can reduce the requirements for the flatness of the end face of the outer shell 1 and reduce the processing difficulty of the outer shell 1.

[0100] A shrinkage groove 311 is provided on the inner side of the rounded corner portion 31, and the shrinkage groove 311 is provided along the height direction. The wall thickness of the rounded corner portion 31 is locally reduced by the shrinkage groove 311. Since the bonding force is only effective at the joint surface between the outer shell 1 and the inner shell 2, the local reduction of the wall thickness will not affect the bonding force at that point, but it can reduce the inherent shrinkage force generated by injection molding at this point.

[0101] An ejector portion 331 is integrally formed on the side of the reinforcing base plate 33, and the ejector portion 331 is connected to the bottom surface of the outer shell 1. The ejector portion 331 increases the bonding force between the reinforcing base plate 33 and the inner bottom surface of the outer shell 1, and facilitates the abutment of the ejector pins 7. Compared with the ejector pins 7 directly abutting against the inner bottom surface of the outer shell 1, the load-bearing capacity after the ejector portion 331 is combined with the inner bottom surface of the outer shell 1 is stronger, and the outer shell 1 is less prone to deformation. There are multiple ejector portions 331, so that multiple ejector pins 7 are ejected simultaneously, improving the stability of the movement when the outer shell 1 and the inner shell 2 are ejected.

[0102] A waterproof rib 36 is integrally formed on the end face of the inner shell 2. The waterproof rib 36 is arranged around the circumference of the inner shell 2 and is in a closed state. The waterproof rib 36 is suitable for cooperating with the cover plate, thereby improving the stability and sealing of the connection between the outer shell 1 and the cover plate.

[0103] The reinforcing base plate 33 has an integrally formed injection-molded nut portion 332, within which a second embedded nut 333 is provided. The second embedded nut 333 makes hard contact with the bottom surface of the outer casing 1. The injection-molded nut portion 332 facilitates the relative fixation of the second embedded nut 333 to the outer casing 1 through injection molding. The hard contact between the second embedded nut 333 and the inner bottom surface of the outer casing 1 facilitates electrical conductivity between the outer casing 1 and the second embedded nut 333. Since the second embedded nut 333 is later used to install a circuit board, it further facilitates electrical conductivity between the outer casing 1 and the circuit board, allowing the circuit board to be grounded through the metal outer casing 1, thereby improving the electromagnetic compatibility of internal electronic components. In this embodiment, there are four reinforcing base plates 33, four injection-molded nut portions 332, and four sets of second embedded nuts 333. Each reinforcing base plate 33 has one set of injection-molded nut portions 332 and one set of second embedded nuts 333.

[0104] In another embodiment, a spring is provided inside the injection-molded nut portion 332. The spring simultaneously makes hard contact with the second embedded nut 333 and the outer casing 1, thereby enabling the second embedded nut 333 to conduct through the outer casing 1. The spring is used to achieve effective conduction between the second embedded nut 333 and the outer casing 1, avoiding contact failure caused by dimensional fluctuations of the second embedded nut 333.

[0105] Reference Figures 1 to 3The outer casing 1 has a viewing window 11, and a viewing window 13 is attached to the bottom surface of the outer casing 1, covering the viewing window 11. The viewing window 13 has a sealing groove 131, and a viewing window sealing ring 132 is installed in the sealing groove 131. A hot-pressed cylinder 133 is integrally formed on the viewing window 13, and several hot-pressed cylinders 133 are arranged in a circumferential array along the viewing window 11. Hot-pressed holes 12 are opened on the bottom surface of the outer casing 1 for the hot-pressed cylinders 133 to pass through. Several hot-pressed holes 12 are arranged in a circumferential array along the viewing window 11, and each corresponds to a hot-pressed cylinder 133. During installation, the viewing window 13 is attached to the bottom surface of the outer shell 1. At this time, the front end of the hot-pressed cylinder 133 passes through the hot-pressed hole 12. Then, the part of the hot-pressed cylinder 133 that passes through the hot-pressed hole 12 is deformed by hot pressing and anchored to the inner surface of the outer shell 1, thereby fixing the viewing window 13 to the outer shell 1.

[0106] In another embodiment, the first insert nut 342 can be welded to the inner bottom surface of the outer casing 1. Welding the first insert nut 342 to the inner surface of the outer casing 1 allows the first insert nut 342 to support the cap stud 341, thereby supporting the arc support portion 32 and the rounded corner portion 31, and assisting in bearing the contraction force on the rounded corner portion 31. The contraction force on the rounded corner portion 31 is not greater than the bonding force between the rounded corner portion 31 and the outer casing 1.

[0107] In another embodiment, refer to Figure 5 A window support piece 37 is injection-molded onto the viewing window 11, and hot-pressing holes 12 are provided on the window support piece 37. By placing the hot-pressing holes 12 on the window support piece 37, no holes are needed on the outer shell 1, reducing the manufacturing difficulty of the outer shell 1. Simultaneously, the flatness of the plastic-molded window support piece 37 is higher than that of the outer shell 1, making the fixation of the viewing window 13 more reliable. The window support piece 37 and the reinforcing base piece 33 are integrally injection-molded, which increases the support force on the arc-shaped support part 32 and also increases the overall strength of the inner shell 2. A window fitting ring 38 is also integrally molded on the window support piece 37. The window fitting ring 38 is fitted to the side wall of the viewing window 11, increasing the bonding force between the window support piece 37 and the outer shell 1, and improving the strength and stability of the window support piece 37.

[0108] Blind holes or through holes can be provided on the side walls of the outer casing to facilitate the installation of other components. Ribs can also be provided on the inner casing to limit or position other components, such as to provide installation space for speakers.

[0109] Secondly, this invention discloses a mining shell.

[0110] Reference Figures 6 to 9A mining shell, used in conjunction with the aforementioned mining shell, includes a cover plate 4, which is connected to the shell 1 by screws.

[0111] The cover plate 4 has a side 41 integrally formed along its circumference. A plastic skeleton 42 is injection molded inside the cover plate 4, and the plastic skeleton 42 is set in close contact with both the cover plate 4 and the side 41. A second wrapping layer 421 is integrally formed on the plastic skeleton 42. The second wrapping layer 421 is connected to the end of the side 41 away from the cover plate 4, and the second wrapping layer 421 is adapted to abut against the outer shell.

[0112] A sealing groove 424 is provided on the plastic frame 42. The sealing groove 424 is arranged around the circumference of the cover plate body 4 to form a closed ring. A sealing ring 425 is provided in the sealing groove 424 to improve the sealing between the cover plate body 4 and the outer shell body 1.

[0113] The cover plate 4 has rounded corners at all four corners. It has screw holes 411 and a screw connection part 422 within the sealing groove 424. The screw connection part 422 is positioned close to the rounded corners and has a connecting hole 4221 and a countersunk hole 4222 that communicate with each other. Both the connecting hole 4221 and the countersunk hole 4222 are coaxial with the screw hole 411. The countersunk hole 4222 allows the bolt heads connecting the outer shell 1 and the cover plate 4 to be recessed within it, improving the overall aesthetics. The connecting hole 4221 allows the bolts connecting the outer shell 1 and the cover plate 4 to pass through. The sealing ring 425 has a clearance hole 4251, and the screw connection part 422 is located within the clearance hole 4251.

[0114] The plastic frame 42 is also provided with reinforcing blocks 423, which are connected to the cover plate 4. There are four reinforcing blocks 423, which are located at the middle of each side of the cover plate 4. The reinforcing blocks 423 help to improve the bonding force between the plastic frame 42 and the cover plate 4, and at the same time improve the strength of the plastic frame 42.

[0115] The cover plate body 4 can be made of 304 stainless steel with a wall thickness of 1-1.5mm.

[0116] Thirdly, this invention discloses a mining shell.

[0117] A mining shell, reference Figure 10 It includes the aforementioned mining outer shell and a cover plate, which is connected to the mining outer shell by bolts.

[0118] Fourthly, this invention discloses a sensor.

[0119] A sensor that uses the aforementioned mining housing as its housing.

[0120] Fifthly, this invention discloses a manufacturing process for a mining outer shell.

[0121] A manufacturing process for a mining outer shell, based on the above-mentioned mining outer shell, with reference to... Figures 11 to 15 It includes the following steps:

[0122] S1. Stamping: Stamping the metal sheet to obtain the outer shell 1.

[0123] S2. Chemical treatment: The outer shell 1 is subjected to alkaline washing and acid washing, and then the inner surface of the outer shell 1 is treated with a treatment solution to form nanoscale pores. The treatment solution includes sodium acetate, sodium phosphate, disodium hydrogen phosphate, ethylenediaminetetraacetic acid (EDTA), and water. The content of sodium acetate is 20-40 g / L, the content of sodium phosphate is 5-30 g / L, the content of disodium hydrogen phosphate is 10-30 g / L, the content of EDTA is 1-20 g / L, and the remainder is water.

[0124] S3. Preheating: Place the outer shell 1 into the mold and preheat it through the mold.

[0125] The injection gates are located at the rounded corners 31. Since there are four rounded corners 31, there are also four injection gates. Positioning the injection gates near the rounded corners 31 enhances the bonding strength between the rounded corners 31 and the outer shell 1, helping to resist the shrinkage stress transmitted from the sidewalls of the inner shell 2. Nano-injection molding requires high plastic flowability to ensure that the injection-molded plastic quickly fills the nano-voids before cooling. Because the plastic at the injection gates has just entered the outer shell 1 and has not yet been cooled by the mold temperature, its flowability is stronger, resulting in better bonding strength at the gate. Furthermore, the multiple injection gate design reduces filling and plastic cooling time, improving plastic flowability and bonding strength. After the inner shell 2 is injection molded, the gates 78 formed by the injection gates can be removed using CNC machining.

[0126] Specifically, refer to Figure 1 , Figures 11 to 13The mold is equipped with a limiting rod 5, which is arranged circumferentially around the end face of the outer shell 1. The limiting rod 5 has a first step 51, a second step 52, and a third step 53. The first step 51 abuts against the end face of the outer shell 1, the second step 52 is suitable for insertion into the inner shell 2, and the third step 53 is suitable for abutting against the end face of the waterproof rib 36. After the inner shell 2 is formed, when the second step 52 is pulled out from the inner shell 2, a void groove 79 is formed on the inner shell 2. The mold is equipped with an ejector rod 6, which is arranged circumferentially around the end face of the outer shell 1. The ejector rod 6 has a fourth step 61, a fifth step 62, and a sixth step 63. The fourth step 61 abuts against the end face of the outer shell 1, the fifth step 62 is suitable for abutting against the first wrapping layer 35, and the sixth step 63 is suitable for abutting against the end face of the waterproof rib 36. During nano-injection molding, the outer shell 1 needs to be placed in the mold before injection molding. Positional deviation will cause injection separation problems. The limiting rod 5 is arranged circumferentially on the end face of the outer shell 1, which can ensure the positioning accuracy between the outer shell 1 and the inner shell 2 as much as possible. The ejector rod 6 can assist in supporting the outer shell 1, further improving the positioning accuracy between the outer shell 1 and the inner shell 2.

[0127] The mold is also equipped with ejector pins 7, which are adapted to abut against the ejector part 331, so that the outer shell 1 and the inner shell 2 can be ejected from the mold together when the mold is demolded.

[0128] Reference Figure 14 The first parting line 72 of the mold is set along the side wall, rounded corner 31 and arc support 32 of the inner shell 2, which can provide as much discharge area as possible for residual gas inside the cavity of the outer shell 1. The residual gas inside the cavity of the outer shell 1 can be discharged smoothly along the flow direction of plastic injection, avoiding the problem of trapped air, ensuring that the injection-molded colloid and nanopores are tightly bonded, and enhancing the bonding strength.

[0129] Reference Figure 11 and Figure 15 The mold is equipped with a sleeve 71 that matches the second inlaid nut 333. When the mold is closed, the sleeve 71 presses against the second inlaid nut 333, so that the second inlaid nut 333 presses against the outer shell 1, thereby pressing the outer shell 1 against the mold core in the mold. This allows the mold core, which has a high heat capacity, to quickly heat the outer shell 1, thus achieving preheating of the outer shell 1 through the mold. This eliminates the need for separate preheating of metal parts outside the mold in traditional nano-injection molding processes, greatly improving production efficiency.

[0130] During injection molding, the mold positions and limits the outer shell 1 using the limiting rod 5 and the ejector rod 6. Then, the ejector sleeve 71 limits the first insert nut 342 and the second insert nut 333. Each first insert nut 342 and second insert nut 333 corresponds to one ejector sleeve 71, and the ejector sleeve 71 can be a stepped ejector sleeve 71. Then, the mold is closed. When the mold is closed, the ejector sleeve 71 presses against the second insert nut 333, so that the second insert nut 333 presses against the outer shell 1, thereby pressing the outer shell 1 against the mold core in the mold. This allows the mold core, which has a high heat capacity, to quickly heat the outer shell 1, thus achieving preheating of the outer shell 1 through the mold.

[0131] S4. Injection molding: After preheating, injection molding is performed through the sprue to fill the cavity between the outer shell 1 and the mold core. Then, injection molding is stopped, and the inner shell 2 is allowed to solidify.

[0132] The nano-injection molding material used in injection molding can be modified nano-sized PBT or PPS.

[0133] S5. Demolding: After the inner shell 2 solidifies, the mold separates, and the outer shell 1 is ejected from the mold core by the ejector pin 7. Then, the outer shell 1 and the inner shell 2, which are now integrated, are removed.

[0134] S6. Machining: Remove the gate left on the inner shell 2 due to the glue inlet by machining.

[0135] S7. Uniform temperature cooling and shaping: After the outer shell 1 is demolded, the uniform temperature cooling and shaping fixture is used to uniformly shape the outer shell 1.

[0136] Specifically, refer to Figure 16 The homogenizing cooling and shaping fixture includes a homogenizing inner core 73 and a homogenizing cover 74. The homogenizing inner core 73 is inserted into the inner shell 2 and fits snugly against it. The homogenizing cover 74 makes hard contact with the bottom surface of the main shell and is connected to the homogenizing inner core 73 by bolts through the viewing window 11, thus reliably fitting the homogenizing inner core 73 to the inner shell 2. To ensure uniform cooling of all parts of the inner shell 2, the sidewalls of the homogenizing core are adapted to the inner shell 2, ensuring that the rounded corners 31 and injection-molded nut portions 332 on the inner shell 2 can fit snugly against the homogenizing core, ensuring uniform cooling and reducing stress generation. In addition, the homogenizing shaping fixture can also provide support to ensure the overall dimensional stability of the outer shell 1 and the inner shell 2.

[0137] S8. Polishing: Polish and brush the outer shell 1. During the surface brushing and polishing process, the localized instantaneous high temperature on the outer surface of the outer shell 1 can be conducted from the outside to the nanopores of the inner wall, but will not affect the plastic body of the inner shell 2. The localized instantaneous high temperature can help eliminate the surface stress between the metal substrate and the plastic.

[0138] S9. Cleaning: Ultrasonic cleaning is performed on the outer casing 1. After brushing and polishing, ultrasonic cleaning is carried out in warm water. The ultrasonic vibration during the ultrasonic cleaning process can increase the crystallinity of the nano-crystalline plastic (PBT or PPS) and improve its dimensional stability. By using the post-processing steps of surface polishing and brushing and ultrasonic cleaning, the appearance of the outer casing 1 can be guaranteed, and the long-term high-temperature baking process in the traditional nano-injection molding process can be eliminated, which greatly improves production efficiency.

[0139] S10, Perspective Observation Window 13 Hot Melt Assembly, Reference Figure 1 and Figure 2 Place the observation window sealing ring 132 into the sealing groove 131, pass the hot-pressed cylinder 133 through the pre-reserved hot-pressing hole 12 on the outer shell 1, and make the transparent observation window 13 fit with the outer shell 1. Then, press the part of the hot-pressed cylinder 133 that passes through the hot-pressing hole 12 by the hot-pressing plate, so that the diameter of the part of the hot-pressed cylinder 133 that passes through the hot-pressing hole 12 increases and makes hard contact with the inner bottom surface of the outer shell 1, so as to fix the transparent observation window 13 on the outer shell 1.

[0140] Sixthly, this application discloses a manufacturing process for a mining outer shell cover.

[0141] A manufacturing process for a mining outer shell cover plate includes the following steps:

[0142] S1. Stamping: Stamping the metal sheet to obtain a cover plate body 4 with sides 41.

[0143] S2. Chemical treatment: The inner surfaces of the cover plate 4 and side 41 are subjected to alkaline washing and acid washing. Then, the inner surfaces of the cover plate 4 and side 41 are treated with a treatment solution to etch nanoscale pores. The treatment solution includes sodium acetate, sodium phosphate, disodium hydrogen phosphate, ethylenediaminetetraacetic acid (EDTA), and water. The content of sodium acetate is 20-40 g / L, the content of sodium phosphate is 5-30 g / L, the content of disodium hydrogen phosphate is 10-30 g / L, the content of EDTA is 1-20 g / L, and the remainder is water.

[0144] S3. Preheating: Place the cover plate 4 into the mold and preheat the cover plate 4 using the heat from the mold.

[0145] Specifically, refer to Figure 17The mold is equipped with a support mechanism, which includes a push plate 761, a push block 762, and a push pin 763. The push plate 761 is in hard contact with the cover plate 4, forming a closed space along the circumference of the plastic frame 42 and located within the plastic frame 42. The push block 762 is located within the push plate 761 and is in hard contact with the cover plate 4. The push pin 763 is located within the push plate 761 and is in hard contact with the cover plate 4. The push pin 763 is arranged around the circumference of the push plate 761, which can more evenly support the cover plate 4. Hard contact means direct contact or abutment.

[0146] After mold closing, the ejector plate 761, ejector block 762, and ejector pin 763 press against the cover plate 4, allowing the cover plate 4 to fit tightly and be positioned within the mold core. This ensures that the cover plate 4 is rapidly heated by the high-temperature mold core inside the mold, eliminating the need for separate preheating of metal parts outside the mold in traditional nano-injection molding processes, thus greatly improving production efficiency. Furthermore, the ejector plate 761 and ejector pin 763 also assist in ejecting the cover plate 4 for demolding.

[0147] S4, Injection molding: Inject plastic skeleton 42 into cover plate body 4;

[0148] Specifically, the injection ports are located at screw holes 411, meaning there is one injection port at each screw hole 411. This multi-injection port design reduces filling and plastic cooling time, improving plastic flowability and bonding strength. Positioning the injection ports at screw holes 411, near the rounded corners, significantly enhances the plastic bonding strength at the rounded corners, helping them resist shrinkage stress transmitted from the sidewalls of the plastic skeleton 42.

[0149] Specifically, refer to Figure 18 The second parting line 75 of the mold is set along the inner contour of the sealing groove 424, which can enhance injection venting and improve the bonding strength. By setting the second parting line 75 along the inner contour of the sealing groove 424, more venting area can be provided for residual gas inside the injection cavity of the cover plate body 4. The residual gas inside the injection cavity of the cover plate body 4 can be smoothly discharged along the flow direction of plastic injection, avoiding the problem of air entrapment, ensuring that the injection molded colloid and the nanopores are tightly bonded, and enhancing the bonding strength.

[0150] The nano-injection molding material used in injection molding can be modified nano-sized PBT or PPS.

[0151] S5. Demolding: Eject the cover plate 4 from the mold to demold it.

[0152] Specifically, refer to Figure 19The mold is equipped with an ejection mechanism, which includes a first ejector rod 771 and a second ejector rod 772. Four first ejector rods 771 are adapted to abut against the screw connection part 422. Four second ejector rods 772 are adapted to abut against the reinforcing block 423. After the plastic skeleton 42 solidifies, the first and second ejector rods 771 and 772 eject the entire assembly of the plastic skeleton 42 and the cover plate 4 from the mold, achieving demolding. The multiple ejection mechanisms significantly enhance mold venting and improve the bonding strength of the plastic. On the other hand, they reduce the pressure on the cover plate 4 during ejection, preventing deformation. Simultaneously, the abutment of the second ejector rods 772 against the reinforcing block 423 allows the load-bearing capacity of the reinforcing block 423 after its combination with the cover plate 4 to resist the thrust applied by the second ejector rods 772, further reducing the possibility of deformation of the cover plate 4.

[0153] S6. Machining: Remove the gate caused by the glue inlet on the cover plate 4 by CNC machining, and machine the connecting hole 4221 and the countersunk hole 4222.

[0154] S7. Polishing and Brushing: Polishing and brushing the outer surface of the cover plate 4 improves surface quality. During the surface brushing and polishing process, the localized instantaneous high temperature on the outer surface of the cover plate 4 can be conducted from the outside to the nanopores of the inner wall, but will not affect the plastic body of the plastic skeleton 42. The localized instantaneous high temperature helps to eliminate the surface stress between the metal substrate and the plastic.

[0155] S8. Ultrasonic cleaning: The cover plate 4 is ultrasonically cleaned to remove impurities from its surface. After brushing and polishing, it is ultrasonically cleaned in warm water. The ultrasonic vibration during the ultrasonic cleaning process can increase the crystallinity of the nano-crystalline plastic (PBT or PPS) and improve its dimensional stability. By utilizing the post-processing steps of surface polishing, brushing, and ultrasonic cleaning, the appearance of the cover plate 4 can be guaranteed, and the long-term high-temperature baking process in traditional nano-injection molding can be eliminated, greatly improving production efficiency.

[0156] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A mining outer shell, characterized in that, include Outer shell (1); Inner shell (2), which is injection molded inside outer shell (1), and the inner shell (2) is provided with rounded corners (31); The arc support part (32) is recessed and corresponds to the rounded corner part (31) of the inner shell (2); A reinforcing base plate (33) is connected to both the arc support part (32) and the bottom surface of the outer shell (1), but the reinforcing base plate (33) is not connected to the inner shell (2). The inner support plate (34) is located between the arc support part (32) and the inner shell (2) and is located at the bottom of the arc support part (32). The inner support plate (34) is connected to the inner shell (2), the arc support part (32) and the outer shell (1).

2. The mining outer shell according to claim 1, characterized in that, The inner support plate (34) is connected to a cover stud (341), and the cover stud (341) is provided with a first inlaid nut (342), which is suitable for connection with the cover plate; The cap stud (341) and the arc support part (32) are connected by a reinforcing rib (343); The reinforcing ribs (343) are arranged in pairs.

3. The mining outer shell according to claim 2, characterized in that, The inner shell (2) is provided with a first wrapping layer (35), and the first wrapping layer (35) is connected to the end face of the outer shell (1); The inner side of the arc portion is provided with a shrinkage groove (311), and the shrinkage groove (311) is provided along the height direction; The reinforcing base plate (33) has an ejector part (331) on its side, and the ejector part (331) is connected to the bottom surface of the outer shell (1); The inner shell (2) is provided with a waterproof rib (36) on its end face. The waterproof rib (36) is arranged around the circumference of the inner shell (2) and is in a closed state. The waterproof rib (36) is suitable for cooperating with the cover plate. The reinforcing base plate (33) is provided with an injection nut part (332), and a second embedded nut (333) is provided inside the injection nut part (332). The second embedded nut (333) is in hard contact with the bottom surface of the outer shell (1), and the second embedded nut (333) is suitable for connection with the circuit board. A spring is provided inside the injection-molded nut part (332), and the spring is in hard contact with the second embedded nut (333) and the outer shell (1) to make the second embedded nut (333) and the outer shell (1) conduct. The outer shell (1) is provided with a perspective window (11), and the outer shell (1) is also connected with a perspective observation window (13). The perspective observation window (13) covers the perspective window (11) and is attached to the outer surface of the outer shell (1). The perspective observation window (13) is provided with a sealing groove (131), and the sealing groove (131) is provided with an observation window sealing ring (132). The viewing window (13) is provided with a hot-pressed cylinder (133), and the bottom surface of the outer shell (1) is provided with a hot-pressed hole (12) through which the hot-pressed cylinder (133) passes. The hot-pressed hole (12) is arranged around the viewing window (11). The part of the hot-pressed cylinder (133) that passes through the hot-pressed hole (12) is deformed by hot pressing and anchored to the inner surface of the outer shell (1).

4. The mining outer shell according to claim 2, characterized in that, The first inlaid nut (342) is welded to the inner bottom surface of the outer shell (1).

5. The mining outer shell according to claim 3, characterized in that, A transparent window support piece (37) is injection molded on the transparent window (11), and the hot pressing hole (12) is provided on the transparent window support piece (37); The transparent support piece (37) is connected to the reinforcing base piece (33); The transparent window support piece (37) is provided with a transparent window fitting ring (38), which fits against the side wall of the transparent window (11).

6. A mining shell, used in conjunction with the mining shell as described in any one of claims 1-5, characterized in that, It includes a cover plate (4), which is connected to the outer shell (1).

7. The mining shell according to claim 6, characterized in that, The cover plate (4) has a side edge (41) along its circumference; a plastic frame (42) is provided inside the cover plate (4), and the plastic frame (42) is set in close contact with both the cover plate (4) and the side edge (41); a second wrapping layer (421) is connected to the plastic frame (42), and the second wrapping layer (421) is connected to the end of the side edge (41) away from the cover plate (4), and the second wrapping layer (421) is adapted to abut against the outer shell; The plastic frame (42) is provided with a sealing groove (424), which is arranged around the circumference of the cover plate (4) to form a closed ring, and a sealing ring (425) is provided inside the sealing groove (424). The cover plate (4) has rounded corners at all four corners. The cover plate (4) has screw holes (411). The sealing groove (424) has screw connecting parts (422). The screw connecting parts (422) are set close to the rounded corners. The screw connecting parts (422) have interconnected connecting holes (4221) and countersunk holes (4222). The connecting holes (4221) and countersunk holes (4222) are coaxial with the screw holes (411). The sealing ring (425) is provided with a clearance hole (4251), and the screw connection part (422) is provided in the clearance hole (4251); The plastic frame (42) is also provided with reinforcing blocks (423), which are connected to the cover plate body (4). There are four reinforcing blocks (423), which are located at the middle of each side of the cover plate body (4).

8. A sensor, characterized in that, The mining shell as described in claim 7 is used as the outer shell.

9. A manufacturing process for a mining outer shell, based on the mining outer shell as described in claim 3, characterized in that, Includes the following steps: S1, Stamping, stamping the metal sheet to obtain the outer shell (1); S2, chemical treatment, by treating the inner surface of the outer shell (1) with a treatment solution to form nanoscale pores; S3. Preheating: Place the outer shell (1) into the mold and preheat it through the mold; S4. Injection molding: Injection molding is performed on the inner surface of the outer shell (1) to obtain the inner shell (2); S5. Demolding: Remove the outer shell (1) from the mold. S6. Polishing: Polish and brush the outer shell (1); S7. Cleaning: Ultrasonic cleaning of the outer casing (1); S8. The perspective observation window (13) is hot-melted and assembled onto the outer shell (1) by hot-melting.

10. The manufacturing process for the mining outer shell as described in claim 9, characterized in that, During injection molding, the injection port is located at the rounded corner (31), and each rounded corner (31) corresponds to one injection port. After the inner shell (2) is formed, the injection port is cut off by machining. During injection molding, the first parting line (72) of the mold is set along the side wall, rounded corner (31) and arc support (32) of the inner shell (2); During injection molding, the mold is provided with ejector pins (7), which are adapted to abut against the ejector portion (331); During injection molding, the mold is provided with a limiting rod (5), which is arranged on the end face of the outer shell (1) along the circumference of the outer shell (1); The limiting rod (5) is provided with a first step (51), a second step (52) and a third step (53). The first step (51) abuts against the end face of the outer shell (1), the second step (52) is adapted to be inserted into the inner shell (2), and the third step (53) is adapted to abut against the end face of the waterproof rib (36). After the inner shell (2) is formed, when the second step (52) is pulled out from the inner shell (2), an empty groove is formed on the inner shell (2). During injection molding, the mold is provided with an ejector rod (6), which is arranged along the circumference of the outer shell (1) on the end face of the outer shell (1); The ejector rod (6) is provided with a fourth step (61), a fifth step (62) and a sixth step (63). The fourth step (61) abuts against the end face of the outer shell (1), the fifth step (62) is adapted to abut against the wrapping layer, and the sixth step (63) is adapted to abut against the end face of the waterproof rib (36). During preheating, the mold is provided with a sleeve (71) that matches the second insert nut (333). When the mold is closed, the sleeve (71) presses against the second insert nut (333), so that the second insert nut (333) presses against the outer shell (1), thereby pressing the outer shell (1) against the mold core in the mold, so that the mold core with high heat can quickly heat the outer shell (1). During preheating, a spring is installed on the top of the sleeve (71). When the mold is closed, the spring makes hard contact with the second insert nut (333) and the inner bottom surface of the outer shell (1) at the same time. After injection molding, the spring is embedded in the injection nut part (332). After the outer shell (1) is demolded, the outer shell (1) is uniformly shaped by a uniform temperature cooling and shaping fixture. The uniform temperature cooling and shaping fixture includes a uniform temperature inner core (73) and a uniform temperature cover (74). The uniform temperature inner core (73) is inserted into the inner shell (2) and fits snugly against the inner shell (2). The uniform temperature cover (74) is in hard contact with the bottom surface of the main shell and is connected to the uniform temperature inner core (73) by bolts. When hot-melting the viewing window (13), the viewing window sealing ring (132) is placed in the sealing groove (131), the hot-pressed cylinder (133) is passed through the pre-reserved hot-pressing hole (12) on the outer shell (1), and the viewing window (13) is made to fit with the outer shell (1). Then, the part of the hot-pressed cylinder (133) passing through the hot-pressing hole (12) is pressed by the hot-pressing plate, so that the diameter of the part of the hot-pressed cylinder (133) passing through the hot-pressing hole (12) increases and makes hard contact with the inner bottom surface of the outer shell (1), so as to fix the viewing window (13) on the outer shell (1).

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