Die-casting die for producing explosion-proof emergency lamp shell and explosion-proof emergency lamp

Abstract

The invention relates to the technical field of emergency lamps, in particular to a die-casting die for producing an explosion-proof emergency lamp shell and an explosion-proof emergency lamp. The die-casting die comprises an upper die plate, a lower die plate, die feet, an upper die core and a lower die core, and two core pulling mechanisms are arranged in the face, facing the upper die core, of the lower die plate; an inclined core pulling groove is obliquely formed in the face, facing the die feet, of the lower die plate, a lateral core pulling mechanism is arranged in the inclined core pulling groove, a first cavity and a second cavity are formed in the upper die core, a third cavity and a fourth cavity are formed in the lower die core, and the first cavity, the second cavity, the third cavity and the fourth cavity are matched to form a shell die-casting cavity. The explosion-proof emergency lamp comprises a shell and a pressing frame covering the shell, the shell comprises a light source seat for installing a light source assembly and a power supply seat for installing a power supply assembly, the light source seat and the power supply seat are integrally formed, and the explosion-proof emergency lamp has the beneficial effects that the size of the shell is reduced, so that the production cost is reduced, the shell can be obtained through one-time die-casting through the die-casting die, and the die-casting procedure is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of emergency lights, and in particular to a die-casting mold for producing an explosion-proof emergency light housing and an explosion-proof emergency light. Background Art

[0002] Explosion-proof emergency lights are set up to guide trapped people to evacuate or carry out fire fighting and rescue operations when the normal lighting power supply is cut off during safety accidents, explosions or fires. The invention patent with the patent application number 201310362223.8 discloses an LED explosion-proof fire emergency light, which includes a housing with an opening, a face cover covering the opening of the housing, and a transparent member installed in the step portion of the face cover. There are gaps between the periphery of the transparent member and the side wall of the step portion, and the gaps surround the periphery of the transparent member for one week. The gaps are filled with sealant so that the transparent member, the face cover and the housing jointly form an explosion-proof chamber. A light guide plate, multiple LED light strips, an indication sign film, an indicator light board, a driving board, a battery and a wiring base are installed in the explosion-proof chamber, resulting in a relatively thick housing, increasing the volume of the housing, and thus increasing the production cost. Therefore, it is necessary to design an explosion-proof emergency light in which the driving board, the battery and the wiring base are separately installed from the light guide plate, the LED light strips and the indicator light board. The light source components such as the light guide plate, the LED light strips and the indicator light board are arranged in an explosion-proof chamber, and the power supply components such as the driving board, the battery and the wiring base are arranged in an explosion-proof chamber. The housing is set to be composed of a light source seat and a power supply seat to reduce the volume of the housing, and a wiring chamber is arranged between the light source seat and the power supply seat for installing the wires connecting the light source components and the power supply components, thereby reducing the volume of the housing. Therefore, it is necessary to design a die-casting mold specifically for the upgraded explosion-proof emergency light housing. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a die-casting mold for producing an explosion-proof emergency light housing and an explosion-proof emergency light in view of the above-mentioned deficiencies of the prior art.

[0004] To achieve the above object, the present invention provides the following technical solution: A die-casting mold for producing an explosion-proof emergency light housing, comprising an upper template, a lower template, and die feet arranged in sequence. An upper die cavity is provided in the upper template, and an upper die core is provided in the upper die cavity. A lower die cavity is provided in the lower template, and a lower die core is provided in the lower die cavity. The upper die core and the lower die core are correspondingly arranged to form a housing die-casting cavity. Two core-pulling mechanisms are provided on one side of the lower template facing the upper die core, and the two core-pulling mechanisms are distributed on both sides of the lower die core. An obliquely arranged inclined core-pulling groove is provided on one side of the lower template facing the die feet, and a lateral core-pulling mechanism is provided in the inclined core-pulling groove. The lateral core-pulling mechanism is distributed on the third side of the lower die core. The lateral core-pulling mechanism includes two first pressure strips fixed on the inner walls of both sides of the inclined core-pulling groove, a first slider slidably connected to both first pressure strips at the same time, and a first driving member for driving the first slider. A first core-pulling is provided on the first slider. A notch communicating with the inclined core-pulling groove is provided at the bottom of the lower die cavity. The first core-pulling passes through the notch and extends into the lower die core. A first cavity, which is rectangular as the main body part, is provided on the upper die core. The first cavity is located at the center of the upper die core. A second cavity is provided at the long side of the first cavity and is connected to it. Straight core-pulling grooves are provided on both sides of the second cavity. The two straight core-pulling grooves are symmetrically arranged and parallel to the long side of the first cavity. The straight core-pulling grooves are used in cooperation with the core-pulling mechanism to demold the product. A third cavity, which is rectangular as the main body part, is provided on the lower die core. The third cavity is located at the center of the lower die core. A fourth cavity is provided at the long side of the third cavity and is connected to it. A feed pipe is provided on the upper template. A flow dividing cone for injecting material into the housing die-casting cavity in cooperation with the feed pipe is provided in the lower template. A sprue bush connecting the flow dividing cone is provided in the feed pipe. A plurality of injection flow channels connected to the flow dividing cone are provided in the lower die core. The other ends of the injection flow channels are connected to the third cavity. A core-pulling cavity for the first core-pulling to pass through is provided inside the lower die core. The core-pulling cavity is obliquely arranged and extends outside the lower die core to form an obliquely arranged tubular cavity at the bottom surface of the third cavity. An inclined groove for accommodating the tubular cavity is provided in the first cavity. The first cavity and the third cavity are correspondingly arranged, and the second cavity and the fourth cavity are correspondingly arranged. The first cavity, the second cavity, the third cavity, and the fourth cavity cooperate to form the housing die-casting cavity.

[0005] The present invention with the above characteristics: Two connected cavities are respectively arranged in the upper die core and the lower die core. The first cavity and the third cavity are used to form the light source base, and the second cavity and the fourth cavity are used to form the power supply base. A core-pulling cavity is arranged in the lower die core to form a wiring cavity connecting the light source base and the power supply base. The housing obtained by die-casting the housing die-casting cavity with such a structure can effectively reduce the volume of the emergency lamp housing. This die-casting mold can form the explosion-proof emergency lamp housing in one step, reducing the die-casting cost. The side core-pulling structure is adopted to obtain the wiring cavity arranged in the housing, which not only saves the production process but also has the function of assisting the product to demold. Through the cooperation of the flow-dividing cone and the injection runner, the raw material injected into the feeding pipeline can evenly fill the housing die-casting cavity, avoiding defects such as air holes and shrinkage porosity caused by uneven raw material flow, and improving the product quality.

[0006] A further setting of the present invention is that: the core-pulling mechanism includes two second pressing strips respectively fixed on the inner walls of both sides of the straight core-pulling groove, and a second slider slidably connected to both second pressing strips at the same time. An inclined guide pillar penetrates through the second slider. The end of the guide pillar is located outside the lower template, and the head of the guide pillar penetrates through the upper template. A second core-pulling is provided on one side of the second slider facing the lower die core, and the second core-pulling is slidably arranged in the straight core-pulling groove.

[0007] The present invention with the above characteristics: By arranging a straight core-pulling groove in the upper die core, the second core-pulling can slide and demold in the straight core-pulling groove and is controlled by the cooperation of the guide pillar and the second slider, which can accurately extract the part in contact with the product and avoid damage to the product caused by improper demolding, improving the product quality. The second pressing strip has a supporting and guiding effect on the second slider, and the guide pillar is connected in a way that penetrates through the second slider, making the core-pulling mechanism have better stability during the working process.

[0008] A further setting of the present invention is that: a plurality of slag pockets are arranged on the lower die core. The slag pockets include a first slag pocket distributed on the side of the core-pulling groove away from the third cavity and a second slag pocket distributed on the side of the fourth cavity away from the third cavity. A first slag pocket runner connecting the two is arranged between the second slag pocket and the fourth cavity. An external slag pocket is arranged on one side surface of the lower die core close to the second slag pocket. A second slag pocket runner connecting the external slag pocket and the second slag pocket is also arranged on the lower die core. A third slag pocket adapted to the first slag pocket and a fourth slag pocket adapted to the second slag pocket are correspondingly arranged on the upper die core. A third slag pocket runner connecting the third slag pocket and the second cavity is arranged in the straight core-pulling groove, and the third slag pocket runner is in an arched shape.

[0009] The present invention with the above characteristics: By providing a slag pocket and a slag pocket runner, impurities, gases and cold materials generated during die casting are effectively collected, preventing these substances from mixing into the product, thereby reducing defects such as pores and slag inclusions inside the product and ensuring the quality of the explosion-proof emergency light housing; the setting of the slag pocket has a certain buffering effect, balancing the pressure distribution inside the cavity, making the raw material flow more smoothly in the cavity and reducing defects such as shrinkage porosity and cold shut caused by uneven raw material flow.

[0010] A further setting of the present invention is that: the external slag pocket includes an upper slag pocket block embedded in the upper template and a lower slag pocket block embedded in the lower template. On the end face of the upper slag pocket block facing the lower slag pocket block, there are several wavy protrusions distributed at the same interval. The wavy protrusions are composed of multiple triangular protrusions. On the end face of the lower slag pocket block facing the upper slag pocket block, there are several wavy grooves adapted to the wavy protrusions. The wavy grooves are composed of several triangular grooves. One end of the wavy groove is connected to the second slag pocket runner. After the upper slag pocket block and the lower slag pocket block are combined, a wavy slag pocket runner is formed.

[0011] The present invention with the above characteristics: By setting the runner of the external slag pocket to be wavy, the slag discharging and gas exhausting effects can be effectively improved. The wavy runner increases the residence time of the raw material, impurities and gases in the runner, enabling the impurities to precipitate more fully and the gases to have more opportunities to escape, thereby reducing the generation of pores. The wavy runner can slow down the flow rate of the raw material, buffer the machine pressure and extend the service life of the mold.

[0012] A further setting of the present invention is that: the lower die core includes a die core main body and a die core split body inserted into the die core main body. The die core split body is cylindrical. There is a round hole for installing the die core split body in the fourth cavity, and a circular groove for accommodating the die core split body in the second cavity.

[0013] The present invention with the above characteristics: By setting the lower die core split body, when a problem occurs with the die core main body or the die core split body, only the faulty part needs to be replaced, reducing the manufacturing and maintenance costs of the mold.

[0014] A further arrangement of the present invention is as follows: An explosion-proof emergency lamp, comprising a housing and a pressing frame covering the housing. The housing is made by using the die-casting mold described in claim 1. The middle part of the pressing frame has a visible window. A light source assembly and a power supply assembly are arranged inside the housing. The light source assembly includes a light guide plate, a light-transmitting plate and an LED light strip. The LED light strip and the light guide plate are arranged below the light-transmitting plate. The light-transmitting plate is located at the visible window of the pressing frame. The housing includes a light source seat for installing the light source assembly and a power supply seat for installing the power supply assembly. One side edge of the power supply seat is connected to one side edge of the light source seat, and the two are integrally formed. A power supply cover plate is covered on the power supply seat. A wiring cavity is arranged inside the power supply seat. A power supply cavity is arranged on one side surface of the power supply cover plate facing the wiring cavity. The power supply assembly includes a power supply circuit board installed at the bottom of the wiring cavity, a battery and a status indicator installed at the bottom of the power supply cavity. A wire channel is arranged between the bottom of the light source seat and the inner wall of the wiring cavity. A wire connecting the light source assembly and the power supply assembly is arranged inside the wire channel. Threaded holes are arranged on both sides of the power supply seat. The hole wall of the threaded hole is an explosion-proof thread joint surface. A compression nut for fixing the wire is threadedly connected inside the threaded hole. The wire is connected to the power supply circuit board.

[0015] The present invention with the above features: The power supply seat is independent of the light source seat to reduce the volume of the light source seat, thereby reducing the volume of the housing to lower the production cost; The integrated design of the power supply seat and the light source seat reduces the die-casting cost, the number of parts and the assembly process while making the overall structure of the lamp more compact and facilitating installation and layout; A wire channel is arranged to connect the light source assembly and the power supply assembly, making the wire arrangement orderly and avoiding problems such as short circuit and abrasion caused by disordered lines. The wire channel located inside the housing can ensure the sealing and explosion-proof effects; The hole walls of the threaded holes on both sides of the power supply seat are explosion-proof thread joint surfaces, which can effectively prevent the flame and high temperature generated by the internal explosion from spreading to the outside when cooperating with the compression nut, meeting the explosion-proof requirements.

[0016] A further arrangement of the present invention is as follows: The inner diameter of the upper part of the inner wall of the wiring cavity is larger than that of the lower part, and a step surface is formed between them. When the power supply cover plate is covered on the power supply seat, the outer peripheral wall of the power supply cavity is in contact with the upper inner wall to form an explosion-proof surface. A gap is left between the end surface of the power supply cavity and the step surface. The inner wall of the wiring cavity extends upward until a first annular boss is formed on the end surface of the power supply seat. An annular groove for inserting the first annular boss is arranged on the power supply cover plate. The annular groove is arranged on the outer periphery of the power supply cavity. When the power supply cover plate is covered on the power supply seat, a sealing space for installing a sealing ring is formed between the end surface of the first annular boss and the bottom of the annular groove.

[0017] The present invention with the above characteristics: By providing a stepped surface in the wiring cavity to cooperate with the outer peripheral wall of the power supply cavity to form an explosion-proof surface, the explosion-proof function of the power supply base is achieved; the sealing space formed by the first annular boss and the annular groove provides a precise installation position for the sealing ring, ensuring the sealing effect, preventing impurities such as dust and moisture from entering the interior of the power supply base and affecting the normal operation of the power supply components, enhancing the protection performance of the lamp, and extending the service life.

[0018] A further setting of the present invention is: The light source base includes a base, and a first concave cavity for accommodating both the light guide plate and the LED light strip is provided on the upper end surface of the base. A second concave cavity for accommodating the light-transmitting plate is provided outside the first concave cavity. The cavity wall of the first concave cavity extends upward until a second annular boss is formed at the bottom of the second concave cavity. The light-transmitting plate is placed on the second annular boss. When the pressing frame is installed on the light source base, the inner ring of the pressing frame presses on the light-transmitting plate. The bottom of the second concave cavity surrounds the outside of the second annular boss, and a glue injection gap is formed between the cavity wall and the bottom of the second concave cavity and the outer peripheral surface of the second annular boss.

[0019] The present invention with the above characteristics: The first concave cavity is arranged inside the second concave cavity, so that the light guide plate and the LED light strip are both embedded at the bottommost part of the light source base. The second annular boss provides stable support for the light-transmitting plate, and cooperates with the pressing frame to press the light-transmitting plate on the light guide plate, minimizing the light loss of the light guide plate to ensure the brightness of the lamp. And such an installation structure can make the light-transmitting plate, the light guide plate and the LED light strip all installed stably, ensuring the stable lighting effect of the lamp; By reserving a glue injection gap for injecting glue to form an explosion-proof surface, the explosion-proof function of the light source base is achieved, and it also has a sealing function, preventing dust, water vapor, etc. from entering the interior of the light source base and extending the service life.

[0020] A further setting of the present invention is: Two battery seats are provided at intervals on the bottom of the power supply cavity. The battery seat includes two relatively arranged cylindrical platforms, and an arc-shaped groove is provided between the two cylindrical platforms. A hoop plate for detachably connecting the battery to the arc-shaped groove is provided on the battery seat. The hoop plate includes two wing plates detachably connected to the cylindrical platforms and an arc-shaped plate connecting the two wing plates. The arc-shaped plate and the arc-shaped groove are spliced to form a space for accommodating the battery.

[0021] The present invention with the above characteristics: The battery seat cooperates with the hoop plate to facilitate the installation and disassembly of the battery; The battery seat is arranged inside the power supply cover plate, reducing the volume of the wiring cavity; The arc-shaped groove and the hoop plate are arranged to fit the shape of the battery, making the battery firmly installed and avoiding the battery from falling or shifting.

[0022] A further arrangement of the present invention is as follows: a light-transmitting groove for embedding an explosion-proof glass sheet is provided at the bottom of the power supply cavity. A light-transmitting hole is provided at the bottom of the light-transmitting groove. A glass pressing plate is detachably connected to the light-transmitting groove. The glass pressing plate presses on the explosion-proof glass sheet. An indicator light groove for placing a status indicator light is provided at the center of the glass pressing plate. A circuit board fixing frame is detachably connected to the glass pressing plate. An indicator light circuit board connected to the status indicator light is installed on the circuit board fixing frame.

[0023] The present invention with the above characteristics: by providing a light-transmitting groove, an explosion-proof glass sheet, and a glass pressing plate, it can not only protect the status indicator light from the external environment but also enable the light of the status indicator light to shine through smoothly. The setting of the explosion-proof glass sheet meets the explosion-proof requirements of the status indicator light and ensures that the entire lamp can meet the explosion-proof requirements.

[0024] The present invention will be further described in detail below with reference to the drawings and embodiments. Description of the Drawings

[0025] Figure 1 It is a schematic structural diagram of the die-casting mold according to the embodiment of the present invention.

[0026] Figure 2 It is an exploded view of the die-casting mold according to the embodiment of the present invention.

[0027] Figure 3 It is a schematic structural diagram of the upper die core according to the embodiment of the present invention.

[0028] Figure 4 It is a schematic structural diagram of the lower die core according to the embodiment of the present invention.

[0029] Figure 5 It is a schematic structural diagram after removing the upper template according to the embodiment of the present invention.

[0030] Figure 6 It is a schematic structural diagram of the lower template and the side core-pulling mechanism according to the embodiment of the present invention.

[0031] Figure 7 It is a cross-sectional view of the lower die core according to the embodiment of the present invention.

[0032] Figure 8 It is a schematic structural diagram of the upper slag pocket block according to the embodiment of the present invention.

[0033] Figure 9 It is a schematic structural diagram of the explosion-proof emergency lamp according to the embodiment of the present invention.

[0034] Figure 10 It is an exploded view of the explosion-proof emergency lamp according to the embodiment of the present invention.

[0035] Figure 11 It is a schematic structural diagram of the housing according to the embodiment of the present invention.

[0036] Figure 12 This is a schematic structural diagram of the power supply cover plate according to an embodiment of the present invention.

[0037] Figure 13 This is a schematic structural diagram of the power supply cover plate and a part of the power supply components according to an embodiment of the present invention.

[0038] Figure 14 This is a cross-sectional view of the explosion-proof emergency lamp according to an embodiment of the present invention. Detailed implementation manners

[0039] This specific embodiment is only an explanation of the present invention and does not limit the present invention. After reading this specification, those skilled in the art can make modifications without creative contributions to this embodiment as needed, but as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

[0040] Such as Figures 1-8A die-casting mold for producing an explosion-proof emergency light housing, comprising an upper template a1, a lower template a2, and a mold foot a3 arranged in sequence. An upper mold cavity (not shown in the figure) is provided in the upper template a1, and an upper mold core a4 is provided in the upper mold cavity. A lower mold cavity a21 is provided in the lower template a2, and a lower mold core a5 is provided in the lower mold cavity a21. The upper mold core a4 and the lower mold core a5 are correspondingly arranged to form a housing die-casting cavity. On one side of the lower template a2 facing the upper mold core a4, two core-pulling mechanisms a6 are provided, and the two core-pulling mechanisms a6 are distributed on both sides of the lower mold core a5. On one side of the lower template a2 facing the mold foot a3, an obliquely arranged inclined core-pulling groove a22 is provided, and a lateral core-pulling mechanism a7 is provided in the inclined core-pulling groove a22. The lateral core-pulling mechanism a7 is distributed on the third side of the lower mold core a5. The lateral core-pulling mechanism a7 includes two first pressure strips a71 fixed to the inner walls on both sides of the inclined core-pulling groove a22, a first slider a72 slidably connected to the two first pressure strips a71 at the same time, and a first driving member a73 for driving the first slider a72. A first core-pulling a74 is provided on the first slider a72. A notch a23 communicating with the inclined core-pulling groove a22 is provided at the bottom of the lower mold cavity a21. The first core-pulling a74 passes through the notch a23 and extends into the lower mold core a5. On the upper mold core a4, a first cavity a41 in the shape of a rectangle is provided as the main body part, and the first cavity a41 is located at the center of the upper mold core a4. A second cavity a42 connected to the first cavity a41 is provided at the long side of the first cavity a41. Straight core-pulling grooves a43 are provided on both sides of the second cavity a42. The two straight core-pulling grooves a43 are symmetrically arranged and parallel to the long side of the first cavity a41. The straight core-pulling grooves a43 are used in cooperation with the core-pulling mechanism a6 to demold the product. On the lower mold core a5, a third cavity a51 in the shape of a rectangle is provided as the main body part, and the third cavity a51 is located at the center of the lower mold core a5. A fourth cavity a52 connected to the third cavity a51 is provided at the long side of the third cavity a51. A core-pulling cavity a53 for the first core-pulling a74 to pass through is provided inside the lower mold core a5. The core-pulling cavity a53 is obliquely arranged and extends outside the lower mold core a5 to form an obliquely arranged tubular cavity a54 on the bottom surface of the third cavity a51. An inclined groove a411 for accommodating the tubular cavity a54 is provided in the first cavity a41. The first cavity a41 and the third cavity a51 are correspondingly arranged, and the second cavity a42 and the fourth cavity a52 are correspondingly arranged. The first cavity a41, the second cavity a42, the third cavity a51, and the fourth cavity a52 cooperate to form a housing die-casting cavity.

[0041] The core-pulling mechanism a6 includes two second pressure strips a61 respectively fixed to the inner walls on both sides of the straight core-pulling groove a43, a second slider a62 slidably connected to the two second pressure strips a61 at the same time. An obliquely arranged guide post a63 penetrates through the second slider a62. The end of the guide post a63 is located outside the lower template a2, and the head of the guide post a63 penetrates through the upper template a1. A second core-pulling 64 is provided on one side of the second slider a62 facing the lower mold core a5. The second core-pulling 64 is slidably arranged in the straight core-pulling groove a43.

[0042] The lower die core a5 is rectangular, and two positioning blocks a55 are provided on its end face. The positioning blocks a55 are located at two right angles far from the fourth cavity a52. The upper die core a4 is rectangular, and two positioning grooves a44 adapted to the positioning blocks a55 are correspondingly provided thereon.

[0043] On one side of the lower template a2 where the side core-pulling mechanism a7 is provided, two abutting columns a8 are symmetrically provided. On the same side of the upper template a1, the die feet a3 and the lower template a2, two abutting columns a8 are symmetrically provided.

[0044] A feed pipe a9 is opened on the upper template a1. A flow dividing cone a10 for injecting material into the housing die-casting cavity in cooperation with the feed pipe a9 is provided in the lower template a2. A sprue bush (not shown in the figure) connecting the flow dividing cone a10 is provided in the feed pipe a9. A number of injection flow channels a56 connecting the flow dividing cone a10 are provided in the lower die core a5. The other ends of the injection flow channels a56 are connected to the third cavity a51.

[0045] The lower die core a5 includes a die core main body a57 and a die core split body a58 inserted into the die core main body a57. The die core split body a58 is cylindrical. A round hole a521 for installing the die core split body a58 is provided in the fourth cavity a52. A circular groove a421 for accommodating the die core split body a58 is provided in the second cavity a42.

[0046] A number of slag pockets are provided on the lower die core a5. The slag pockets include a first slag pocket a12 distributed on the side of the straight core-pulling groove a43 far from the third cavity a51, and a second slag pocket a13 distributed on the side of the fourth cavity a52 far from the third cavity a51. A first slag pocket flow channel a59 connecting the two is provided between the second slag pocket a13 and the fourth cavity a52. An external slag pocket a20 is provided on one side face of the lower die core a5 close to the second slag pocket a13. A second slag pocket flow channel a50 connecting the external slag pocket a20 and the second slag pocket a13 is also provided on the lower die core a5. On the upper die core a4, a third slag pocket a45 adapted to the first slag pocket a12 and a fourth slag pocket a46 adapted to the second slag pocket a13 are correspondingly provided. A third slag pocket flow channel a47 connecting the third slag pocket a45 and the second cavity a42 is provided in the straight core-pulling groove a43. The third slag pocket flow channel a47 is arched.

[0047] The external slag pocket a20 includes an upper slag pocket block a21 embedded in the upper template a1 and a lower slag pocket block a22 embedded in the lower template a2. A number of wavy protrusions a211 distributed at the same interval are provided on the end surface of the upper slag pocket block a21 facing the lower slag pocket block a22. The wavy protrusions a211 are composed of multiple triangular protrusions a2111. A number of wavy grooves a221 adapted to the wavy protrusions a211 are provided on the end surface of the lower slag pocket block a22 facing the upper slag pocket block a21. The wavy grooves a221 are composed of a number of triangular grooves a2211. One end of the wavy groove a221 is connected to the second slag pocket flow channel a50. After the upper slag pocket block a21 and the lower slag pocket block a22 are matched, a wavy slag pocket flow channel is formed.

[0048] By respectively arranging two connected cavities in the upper die core and the lower die core, where the first cavity and the third cavity are used to form the light source seat, the second cavity and the fourth cavity are used to form the power supply seat, and a core-pulling cavity is arranged in the lower die core to form a wiring cavity connecting the light source seat and the power supply seat, the shell obtained by die-casting the shell die-casting cavity with such a structure can effectively reduce the volume of the emergency lamp shell; the die-casting raw material is injected into the shell die-casting cavity from the feeding pipeline. After the product is injection-molded, the upper template and the lower template are opened, and the core-pulling mechanism and the side core-pulling mechanism act simultaneously to achieve core-pulling and assist the product in demolding.

[0049] Such as Figures 9-14An explosion-proof emergency light as shown includes a housing b1 and a pressing frame b2 covering the housing b1. The middle of the pressing frame b2 has a visible window b21. Inside the housing b1, there are a light source assembly and a power supply assembly. The light source assembly includes a light guide plate b3, a light-transmitting plate b4, and an LED light strip b5. The LED light strip b5 and the light guide plate b3 are arranged below the light-transmitting plate b4. The light-transmitting plate b4 has an indication mark and is located at the visible window b21 of the pressing frame b2. The housing b1 includes a light source seat b11 for installing the light source assembly and a power supply seat b12 for installing the power supply assembly. One side edge of the power supply seat b12 is connected to one side edge of the light source seat b11, and they are integrally formed. A power supply cover plate b6 is provided on the power supply seat b12. There is a wiring cavity b121 inside the power supply seat b12, and a power supply cavity b61 is provided on the side surface of the power supply cover plate b6 facing the wiring cavity b121. The power supply assembly includes a power supply circuit board b7 installed at the bottom of the wiring cavity b121, a battery b8 installed at the bottom of the power supply cavity b61, and a status indicator light (not shown in the figure). There is a wire channel b13 between the bottom of the light source seat b11 and the inner wall of the wiring cavity b121, and a wire (not shown in the figure) connecting the light source assembly and the power supply assembly is provided in the wire channel b13. Threaded holes b122 are provided on both sides of the power supply seat b12. The hole wall of the threaded hole b122 is an explosion-proof thread joint surface. A compression nut (not shown in the figure) for fixing the wire is threadedly connected in the threaded hole b122. A threaded explosion-proof structure is formed between the compression nut and the threaded hole b122, and the wire (not shown in the figure) is connected to the power supply circuit board b7.

[0050] The inner diameter of the upper inner wall of the wiring cavity b121 is larger than that of the lower inner wall, and a step surface b123 is formed between them. When the power supply cover plate b6 is covered on the power supply seat b12, the outer peripheral wall of the power supply cavity b61 is in contact with the upper inner wall to form an explosion-proof surface b62. Together with the threaded explosion-proof structure of the compression nut and the threaded hole, an explosion-proof cavity is formed between the power supply seat and the power supply cover plate. There is a gap between the end surface of the power supply cavity b61 and the step surface. The inner wall of the wiring cavity b121 extends upward until a first annular boss b124 is formed on the end surface of the power supply seat b12. An annular groove b63 for inserting the first annular boss b124 is provided on the power supply cover plate b6. The annular groove b63 is arranged on the outer periphery of the power supply cavity b61. When the power supply cover plate b6 is covered on the power supply seat b12, a sealing space for installing a sealing ring b9 is formed between the end surface of the first annular boss b124 and the bottom of the annular groove b63.

[0051] The light source base b11 includes a base b111. On the upper end surface of the base b111, there is a first concave cavity b112 for accommodating both the light guide plate b3 and the LED light strip b5. Outside the first concave cavity b112, there is a second concave cavity b113 for accommodating the light-transmitting plate b4. The cavity wall of the first concave cavity b112 extends upward until a second annular boss b114 is formed at the bottom of the second concave cavity b113. The light-transmitting plate b4 is placed on the second annular boss b114. When the pressing frame b2 is installed on the light source base b11, the inner circle of the pressing frame b2 presses on the light-transmitting plate b4. The bottom of the second concave cavity b113 surrounds the outside of the second annular boss b114. A glue injection gap b115 is formed between the cavity wall and the bottom of the second concave cavity b113 and the outer peripheral surface of the second annular boss b114. Glue is filled in the glue injection gap to form an explosion-proof surface, so that an explosion-proof cavity is formed between the first concave cavity and the second concave cavity. A number of guiding bosses b1121 are evenly distributed on the bottom of the first concave cavity b112, and multiple guiding bosses b1121 are arranged side by side at a fixed interval as a group.

[0052] On the bottom of the power supply cavity b61, there are two battery seats b64 arranged at intervals. The battery seat b64 includes two cylindrical platforms b641 arranged oppositely. An arc-shaped groove b642 is provided between the two cylindrical platforms b641. A hoop plate b10 for detachably connecting the battery b8 and fixing it in the arc-shaped groove b642 is detachably connected to the battery seat b64. The hoop plate b10 includes two wing plates b101 detachably connected to the cylindrical platform b641 and an arc-shaped plate b102 connecting the two wing plates b101. The arc-shaped plate b102 and the arc-shaped groove b642 are spliced to form a space for accommodating the battery b8.

[0053] On the bottom of the power supply cavity b61, there is a light-transmitting groove b65 for embedding the explosion-proof glass sheet b20. A light-transmitting hole b651 is provided at the bottom of the light-transmitting groove b65. A glass pressing plate b30 is detachably connected to the light-transmitting groove b65. The glass pressing plate b30 presses on the explosion-proof glass sheet b20. An indicator light groove b31 for placing the status indicator light is provided at the center of the glass pressing plate b30. A circuit board fixing frame b40 is detachably connected to the glass pressing plate b30, and an indicator light circuit board (not shown in the figure) connected to the status indicator light is installed on the circuit board fixing frame b40.

[0054] Install the power supply component including the power supply circuit board, battery and status indicator light in the power supply base, install the light source component including the light guide plate, light-transmitting plate and LED light strip in the light source base, and set a wire channel between the power supply base and the light source base for installing wires to connect the light source component and the power supply component. Such a structural setting can reduce the volume of the housing to lower the production cost; a glue injection gap is formed between the cavity wall and cavity bottom of the second cavity provided in the light source base and the outer peripheral surface of the second annular boss, and glue is filled in the glue injection gap to form an explosion-proof surface, so that an explosion-proof cavity is formed between the first cavity and the second cavity. The outer peripheral wall and the upper inner wall of the power supply cavity are attached to form an explosion-proof surface, which cooperates with the thread explosion-proof structure of the compression nut and the threaded hole, so as to form an explosion-proof cavity between the power supply base and the power supply cover plate. Such an explosion-proof structure is a pure explosion-proof type structure. There are no requirements for the internal components of the pure explosion-proof type structure products, while the increased safety explosion-proof structure must install components without sparking or with low heat generation, and the intrinsically safe explosion-proof structure has current-limiting and energy-limiting components. The pure explosion-proof type has a wide range of applications, and the method of transforming ordinary products into explosion-proof products is relatively simple and easy to implement. The housing of the pure explosion-proof type product is strong, corrosion-resistant and has a long service life. The installation and maintenance of the housing of the pure explosion-proof type product are relatively simple and easy in the early stage and the later stage.

Claims

1. A die-casting mold for producing an explosion-proof emergency light housing, characterized in that: The die-casting system comprises an upper die plate, a lower die plate and a die foot which are arranged in sequence, an upper die groove is arranged in the upper die groove, an upper die core is arranged in the lower die plate, a lower die groove is arranged in the lower die groove, a lower die core is arranged in the upper die core and the lower die core is arranged correspondingly to form a shell die-casting cavity, two core-pulling mechanisms are arranged in a side of the lower die plate facing the upper die core, the two core-pulling mechanisms are distributed on both sides of the lower die core, an oblique core-pulling groove which is arranged obliquely on a side of the lower die plate facing the die foot is provided, a lateral core-pulling mechanism is arranged in the oblique core-pulling groove, and the lateral core-pulling mechanism is distributed in the lower die. On the third side of the mold core, the lateral core pulling mechanism includes two first pressure strips fixed on the inner walls of both sides of the oblique core pulling groove, a first slider slidably connected to the two first pressure strips, and a first driving member driving the first slider, a first core pulling is provided on the first slider, a notch connected to the oblique core pulling groove is provided at the bottom of the lower mold groove, the first core pulling extends into the lower mold core through the notch, a first rectangular cavity as a main body is provided on the upper mold core, the first cavity is located at the center of the upper mold core, and a second cavity connected to the first cavity is provided at the long side of the first cavity. Straight core-pulling grooves are provided on both sides of the second cavity, and the two straight core-pulling grooves are symmetrically arranged and parallel to the long sides of the first cavity. The straight core-pulling grooves cooperate with the core-pulling mechanism to demould the product. The lower mold core is provided with a third cavity as a main body and in a rectangular shape. The third cavity is located at the center of the lower mold core. A fourth cavity connected to the third cavity is provided at the long side of the third cavity. A feed pipe is provided on the upper mold plate, and a diverter cone is provided in the lower mold plate to cooperate with the feed pipe to inject material into the shell die-casting cavity, and a gate sleeve connected to the diverter cone is provided in the feed pipe. The lower mold core is provided with a plurality of injection channels connected to the diverter cone, the other end of the injection channel is connected to the third cavity, the lower mold core is provided with a core pulling cavity for the first core pulling to pass through, the core pulling cavity is inclined and extends to the bottom surface of the third cavity outside the lower mold core to form an inclined tubular cavity, the first cavity is provided with an inclined groove for accommodating the tubular cavity, the first cavity is corresponding to the third cavity, the second cavity is corresponding to the fourth cavity, and the first cavity, the second cavity, the third cavity and the fourth cavity cooperate to form a shell die-casting cavity.

2. A die-casting mold for producing an explosion-proof emergency light housing according to claim 1, characterized in that: The core pulling mechanism includes two second pressure strips respectively fixed on the inner walls of both sides of the straight core pulling groove, and a second slider slidably connected to the two second pressure strips, an inclined guide column passes through the second slider, the end of the guide column is located outside the lower mold plate, and the head end of the guide column passes through the upper mold plate, and a second core pulling is provided on the side surface of the second slider facing the lower mold core, and the second core pulling is slidably set in the straight core pulling groove.

3. A die-casting mold for producing an explosion-proof emergency light housing according to claim 2, characterized in that: The lower mold core is provided with a plurality of slag bags, the slag bags include a first slag bag distributed on the side of the core pulling groove away from the third cavity, and a second slag bag distributed on the side of the fourth cavity away from the third cavity. A first slag bag flow channel connecting the second slag bag and the fourth cavity is provided between the second slag bag and the fourth cavity. An external slag bag is provided on the side of the lower mold core close to the second slag bag, and a second slag bag flow channel connecting the external slag bag and the second slag bag is also provided on the lower mold core. A third slag bag adapted to the first slag bag and a fourth slag bag adapted to the second slag bag are correspondingly provided on the upper mold core. A third slag bag flow channel connecting the third slag bag and the second cavity is provided in the straight core pulling groove, and the third slag bag flow channel is arched.

4. A die-casting mold for producing an explosion-proof emergency light housing according to claim 3, characterized in that: The external slag bag comprises an upper slag bag block embedded in the upper template and a lower slag bag block embedded in the lower template. The upper slag bag block is provided with a plurality of wavy protrusions distributed at equal intervals on the end surface facing the lower slag bag block, and the wavy protrusions are composed of a plurality of triangular protrusions. The lower slag bag block is provided with a plurality of wavy grooves matched with the wavy protrusions on the end surface facing the upper slag bag block, and the wavy grooves are composed of a plurality of triangular grooves. One end of the wavy groove is connected to the second slag bag flow channel, and the upper slag bag block and the lower slag bag block cooperate to form a wavy slag bag flow channel.

5. The die-casting mold for producing an explosion-proof emergency light housing according to any one of claims 1 to 3, characterized in that: The lower mold core includes a mold core body and a mold core split plugged into the mold core body, the mold core split is cylindrical, a circular hole for installing the mold core split is provided in the fourth mold cavity, and a circular groove for accommodating the mold core split is provided in the second mold cavity.

6. An explosion-proof emergency light, comprising a shell, and a pressing frame covering the shell, wherein the shell is made of the die-casting mold according to claim 1, the middle of the pressing frame has a visual window, a light source assembly and a power supply assembly are arranged in the shell, the light source assembly comprises a light guide plate, a light-transmitting plate and an LED light bar, the LED light bar and the light guide plate are arranged below the light-transmitting plate, and the light-transmitting plate is located at the visual window of the pressing frame, characterized in that: The shell includes a light source seat for installing the light source assembly and a power supply seat for installing the power supply assembly. One side of the power supply seat is connected to one side of the light source seat, and the two are integrally formed. The power supply seat is covered with a power supply cover, and a wiring cavity is provided in the power supply seat. A power supply cavity is provided on the side of the power supply cover facing the wiring cavity. The power supply assembly includes a power supply circuit board installed at the bottom of the wiring cavity, a battery installed at the bottom of the power supply cavity and a status indicator light. A wire channel is provided between the bottom of the light source seat and the inner wall of the wiring cavity. Wires connecting the light source assembly and the power supply assembly are provided in the wire channel. Threaded holes are provided on both sides of the power supply seat, and the hole wall of the threaded hole is a flameproof threaded joint surface. A clamping nut for fixing the wire is threadedly connected in the threaded hole, and the wire is connected to the power supply circuit board.

7. The explosion-proof emergency light according to claim 6, characterized in that: The diameter of the upper inner wall of the wiring cavity is larger than the diameter of the lower inner wall, and a step surface is formed therebetween. When the power cover is mounted on the power socket, the outer peripheral wall of the power cavity is in contact with the upper inner wall to form a flameproof surface. A gap is left between the end face of the power cavity and the step surface. The inner wall of the wiring cavity extends upward until a first annular boss is formed on the end face of the power socket. An annular groove for plugging the first annular boss is provided on the power cover, and the annular groove is arranged on the outer periphery of the power cavity. When the power cover is mounted on the power socket, a sealing space for installing a sealing ring is formed between the end face of the first annular boss and the bottom of the annular groove.

8. An explosion-proof emergency light according to claim 6 or 7, characterized in that: The light source seat includes a base, and the upper end surface of the base is provided with a first concave cavity for accommodating both the light guide plate and the LED light strip, and a second concave cavity for accommodating the light-transmitting plate is provided outside the first concave cavity, and the cavity wall of the first concave cavity extends upward until a second annular boss is formed on the cavity bottom of the second concave cavity, and the light-transmitting plate is placed on the second annular boss. When the pressing frame is installed on the light source seat, the inner circle of the pressing frame is pressed on the light-transmitting plate, and the cavity bottom of the second concave cavity surrounds the outside of the second annular boss, and a glue injection gap is formed between the cavity wall and cavity bottom of the second concave cavity and the outer peripheral surface of the second annular boss.

9. An explosion-proof emergency light according to claim 6 or 7, characterized in that: The bottom of the power cavity is provided with two battery seats arranged at intervals, and the battery seat includes two oppositely arranged cylindrical platforms, an arc-shaped groove is provided between the two cylindrical platforms, and a hoop plate for fixing the battery in the arc-shaped groove is detachably connected to the battery seat, and the hoop plate includes two wing plates detachably connected to the cylindrical platforms and an arc-shaped plate connecting the two wing plates, and the arc-shaped plate and the arc-shaped groove are spliced ​​to form a space for accommodating the battery.

10. The explosion-proof emergency light according to claim 9, characterized in that: The bottom of the power cavity is provided with a light-transmitting groove in which an explosion-proof glass sheet is embedded, and a light-transmitting hole is provided at the bottom of the light-transmitting groove. A glass pressing plate is detachably connected to the light-transmitting groove, and the glass pressing plate is pressed on the explosion-proof glass sheet. An indicator light groove for placing a status indicator light is provided at the center of the glass pressing plate, and a circuit board fixing frame is detachably connected to the glass pressing plate, and an indicator light circuit board connected to the status indicator light is installed on the circuit board fixing frame.

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