Hinge structure of cavity door of hot wire equipment

Abstract

The utility model discloses a hot wire equipment cavity door hinge structure which comprises a hinge support, a hinge stop block, a first hinge installation seat and a second hinge installation seat, one side face of the hinge support is a fixed face used for being fixed to the outer side wall of a cavity, the other side face of the hinge support is provided with the hinge stop block, and the hinge stop block comprises a stop inclined face. The blocking inclined plane is arranged towards the first hinge mounting seat; one end of the first hinge mounting seat is hinged with the hinge support through a first rotating shaft, the other end of the first hinge mounting seat is hinged with the second hinge mounting seat through a second rotating shaft, and the second hinge mounting seat is fixed on the cavity door; a fixing piece is arranged on the first hinge mounting seat and penetrates through the first hinge mounting seat to abut against the cavity door so as to fix the relative position of the cavity door and the first hinge mounting seat. According to the hot wire equipment cavity door hinge structure, effective sealing of the hot wire equipment cavity door is achieved.

Description

Technical Field

[0001] This utility model relates to the field of industrial equipment, and in particular to a hinge structure for a hot wire equipment cavity door. Background Technology

[0002] Hot-wire chemical vapor deposition (CVD) technology has been widely used in many fields such as semiconductors, photovoltaics, and functional coatings due to its significant advantages, including low-temperature deposition, high deposition rate, and good film uniformity. This technology efficiently deposits thin films on the substrate surface by decomposing the gaseous precursor with a high-temperature hot filament.

[0003] The cavity door structure of hot-wire equipment has stringent requirements in practical applications, needing to balance high sealing performance, high-temperature resistance, and tolerance to frequent opening and closing. However, traditional cavity door hinges mostly use ordinary metal hinges or flange connections. During long-term use, these traditional hinges are prone to deformation and wear due to the thermal stress generated during equipment operation, even leading to seal failure. Once the seal fails, the vacuum level of the equipment will decrease, which will seriously affect the stability of the process and make it difficult to meet the industrial production requirements for equipment reliability and long service life.

[0004] Therefore, there is an urgent need to develop a new type of hinge structure for the cavity door of hot wire equipment. Utility Model Content

[0005] In view of this, the present invention provides a hinge structure for the cavity door of a hot wire device, which solves the problem that the cavity door structure of the hot wire device is prone to deformation in the prior art, leading to the failure of the cavity door seal.

[0006] To achieve one, some, or all of the above objectives, or other objectives, this utility model provides a hinge structure for a hot-wire device cavity door. The hot-wire device includes a cavity and an openable cavity door. The cavity door hinge structure includes a hinge support, a hinge stop, a first hinge mounting base, and a second hinge mounting base.

[0007] One side of the hinge support is a fixed surface for fixing to the outer wall of the cavity. The other side of the hinge support is provided with a hinge stop block, which includes a blocking slope and is positioned towards the first hinge mounting base.

[0008] One end of the first hinge mounting base is hinged to the hinge support via a first pivot, and the other end of the first hinge mounting base is hinged to the second hinge mounting base via a second pivot. The second hinge mounting base is fixed to the cavity door.

[0009] A fixing member is provided on the first hinge mounting base. The fixing member passes through the first hinge mounting base and abuts against the cavity door to fix the relative position of the cavity door and the first hinge mounting base.

[0010] Furthermore, the hinge support includes a support body, a set of hinge mounting lugs is provided on one side of the support body, a first pivot mounting hole for mounting the first pivot is provided on the hinge mounting lugs, and a set of first mounting holes is provided on the support body, penetrating from one side of the hinge support to the other side, and the hinge support is fixed to the outer wall of the cavity by fasteners passing through the first mounting hole group.

[0011] Furthermore, the second hinge mounting base includes a pair of opposing hinge plates, each hinge plate having a second pivot mounting hole for mounting the second pivot, and a third mounting hole group for fasteners to pass through to fix the hinge plate to the cavity door, the edge of the hinge plate not extending beyond the edge of the cavity door.

[0012] Furthermore, a third pivot mounting hole for mounting a first pivot is provided on one side of the first hinge mounting base, and a fourth pivot mounting hole for mounting a second pivot is provided on the other side of the first hinge mounting base. One side of the first hinge mounting base is located between a set of hinge mounting lugs of the hinge support, and the first pivot mounting hole is aligned with the third pivot mounting hole. The other side of the first hinge mounting base is located between a pair of hinge plates of the second hinge mounting base, and the second pivot mounting hole is aligned with the fourth pivot mounting hole.

[0013] Furthermore, one end face of the first hinge mounting base is a vertical end face. When the cavity door is opened to the maximum angle, the vertical end face of the first hinge mounting base abuts against the blocking slope of the hinge stop.

[0014] Furthermore, the first rotating shaft includes a mounting bushing, a central rotating shaft, bolts, and locating pins. The mounting bushing is disposed in the mounting hole of the third rotating shaft. The central rotating shaft passes through the mounting hole of the first rotating shaft and the mounting bushing. Bolts with washers are screwed into both ends of the central rotating shaft from the outside of the hinge mounting lug. Locating pins are inserted into the corresponding pin holes of the central rotating shaft in the pin holes of the hinge mounting lug.

[0015] Furthermore, the hinge block includes an upper surface and a lower surface. A second set of mounting holes is formed on the hinge block, extending from the upper surface to the lower surface. The hinge block is fixed to the hinge support by a positioning bolt passing through the second set of mounting holes. The lower surface of the block contacts the other side of the hinge support. The width of the lower surface of the block is smaller than the width of the upper surface of the block to form the blocking slope.

[0016] Furthermore, the second mounting hole group has an elongated oval hole, and the hinge support is provided with bolt holes corresponding to the second mounting hole group. The stop block positioning bolt passes through the elongated oval hole and is screwed into the bolt hole for fixation. By moving the stop block positioning bolt within the elongated oval hole, the relative position of the hinge stop block and the hinge support can be adjusted.

[0017] Furthermore, the fixing component includes a first fixing component and a second fixing component. The first hinge mounting base has a first fixing through hole and a second fixing through hole. The first fixing component passes through the first fixing through hole and abuts against the cavity door. The second fixing component passes through the second fixing through hole and abuts against the cavity door, so as to fix the first hinge mounting base on the cavity door.

[0018] Furthermore, the first fixing through hole is a straight hole, and the first fixing component is a bolt used in conjunction with a nut; the second fixing through hole is a threaded hole, and the second fixing component is a screw.

[0019] Implementing the embodiments of this utility model will have the following beneficial effects:

[0020] This utility model relates to a hinge structure for a hot-wire equipment chamber door. When the chamber door is opened, the second hinge mounting base rotates around the second pivot axis with the chamber door, while the first hinge mounting base rotates synchronously around the first pivot axis. When the chamber door is opened to its maximum angle, the end face of the first hinge mounting base engages with the obstructing inclined surface of the hinge stop, forming a rigid limit to prevent over-opening. When closed, the chamber door rotates in the opposite direction, and all components synchronously reset. The fixing components ensure a tight fit between the chamber door and the first hinge mounting base, achieving effective sealing of the hot-wire equipment chamber door. Even if the chamber door undergoes some warping deformation, precise alignment between the chamber door and the chamber body can still be achieved through the linkage of the two pivot axes, ensuring that the sealing performance of the hot-wire equipment chamber door meets the requirements of subsequent vacuuming processes within the chamber. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] in:

[0023] Figure 1 This is a schematic diagram of the main structure of a hot wire device using a hot wire device cavity door hinge structure in one embodiment.

[0024] Figure 2 This is a schematic left view of a hot wire device that uses a hot wire device cavity door hinge structure in one embodiment.

[0025] Figure 3 This is an exploded structural diagram of the hot wire device cavity door hinge structure in one embodiment.

[0026] Figure 4 This is a schematic diagram of the isometric structure of the hot wire device cavity door hinge structure in one embodiment;

[0027] Figure 5 This is a schematic diagram of the hinge support in one embodiment;

[0028] Figure 6 This is a schematic diagram of the hinge stop block in one embodiment;

[0029] Figure 7 This is a schematic diagram of the structure of the first hinge mounting base in one embodiment;

[0030] Figure 8 This is a schematic diagram of the hinge plate of the second hinge mounting base in one embodiment;

[0031] Figure 9 This is a top view schematic diagram of the hot wire device cavity door hinge structure in one embodiment;

[0032] Figure 10 for Figure 9 A schematic diagram of the cross-sectional structure at point A in the middle.

[0033] Explanation of the attached drawing numbers:

[0034] 100: cavity; 200: cavity entrance;

[0035] 300: Hinge support; 301: Fixed surface; 310: Support body; 320: Hinge shaft mounting lug; 321: First pivot mounting hole; 302: First mounting hole group;

[0036] 400: Hinge stop; 401: Blocking ramp; 402: Upper surface of the stop; 403: Lower surface of the stop; 405: Second mounting hole group; 406: Stop positioning bolt;

[0037] 500: First hinge mounting base; 501: Vertical end face; 502: First fixing through hole; 503: Second fixing through hole; 504: Third pivot mounting hole; 505: Fourth pivot mounting hole;

[0038] 600: First pivot; 601: Mounting bushing; 602: Central pivot; 604: Bolt; 605: Locating pin;

[0039] 700: Second pivot;

[0040] 800: Second hinge mounting base; 802: Second pivot mounting hole; 803: Third mounting hole group;

[0041] 801: Hinge plate; 900: Fixing element; 901: First fixing element; 902: Second fixing element. Detailed Implementation

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this invention are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or accompanying drawings of this invention are used to distinguish different objects, not to describe a particular order.

[0043] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0044] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0045] Reference Figures 1-4This utility model provides an embodiment of a hot wire device cavity door hinge structure. The hot wire device includes a cavity 100 and an openable cavity door 200. The cavity door hinge structure includes a hinge support 300, a hinge stop 400, a first hinge mounting base 500, and a second hinge mounting base 800.

[0046] One side of the hinge support 300 is a fixing surface 301, which is used to fix it to the outer wall of the cavity 100. The other side of the hinge support 300 is provided with a hinge stop 400. The hinge stop 400 includes a blocking inclined surface 401, which is disposed towards the first hinge mounting base 500.

[0047] One end of the first hinge mounting base 500 is hinged to the hinge support 300 via a first rotating shaft 600, and the other end of the first hinge mounting base 500 is hinged to the second hinge mounting base 800 via a second rotating shaft 700. The second hinge mounting base 800 is fixed to the cavity door 200.

[0048] A fixing member 900 is provided on the first hinge mounting base 500. The fixing member 900 passes through the first hinge mounting base 500 and abuts against the cavity door 200 to fix the relative position of the cavity door 200 and the first hinge mounting base 500.

[0049] In this embodiment, the hinge support 300 is integrally formed from, for example, stainless steel. One side is a planar fixing surface 301, which is fixedly connected to the outer wall of the cavity 100 by bolts. The fixing surface 301 fits tightly against the cavity 100 to reduce thermal deformation gaps. A hinge stop 400 is provided on the other side of the hinge support 300, and the two are detachably connected by bolts.

[0050] The hinge stop 400 has a wedge-shaped block structure and is made of high-temperature resistant metal material. The blocking slope 401 is used to limit the maximum opening angle of the cavity door 200. Exemplarily, in one specific embodiment, the blocking slope 401 makes an angle of 60° with the horizontal plane. It is understood that this angle can be determined according to the opening and closing angle of the cavity door required by the specific use scenario, and this utility model does not make any special limitation in this regard.

[0051] The first hinge mounting base 500 has a block-shaped structure with hinged parts at both ends. One end is hinged to the hinge mounting ear plate 320 of the hinge support 300 via a first rotating shaft 600, and the other end is hinged to the second hinge mounting base 800 via a second rotating shaft 700. Those skilled in the art can select the specifications of the first rotating shaft 600 and the second rotating shaft 700 according to the specific equipment requirements.

[0052] The second hinge mounting base 800 consists of a pair of parallel hinge plate 801s, which are fixed to the outer wall of the cavity 200. The hinge plate 801 does not extend beyond the edge of the cavity 200 to avoid structural interference with the hinge support 300.

[0053] The fastener 900 can be a bolt, nut, or other component, used to fix the first hinge mounting base 500 to the position of the cavity door 200.

[0054] When the cavity door 200 is opened, the second hinge mounting base 800 rotates around the second pivot 700 along with the cavity door 200, and the first hinge mounting base 500 rotates synchronously around the first pivot 600. When the cavity door 200 is opened to its maximum angle, the vertical end face 501 of the first hinge mounting base 500 abuts against the blocking inclined surface 401 of the hinge stop 400, forming a rigid limit to prevent over-opening. When closed, the cavity door 200 is rotated in the opposite direction, and all components are synchronously reset. The fixing member 900 ensures that the cavity door 200 and the first hinge mounting base 500 are tightly fitted together, maintaining the sealing performance.

[0055] In the traditional single-axis hinge structure, after long-term use, the cavity door 200 will deform due to thermal stress (such as warping ≥0.5mm), resulting in a loose fit with the cavity 100 and forming a certain gap, which cannot meet the vacuum requirements.

[0056] In this embodiment of the invention, when the cavity door 200 is opened from the closed state, the second rotating shaft 700 moves in a circular motion around the first rotating shaft 600 along with the cavity door 200, and the first hinge mounting base 500 rotates synchronously around the first rotating shaft 600. At this time, the movement trajectory of the second rotating shaft 700 is an arc with the first rotating shaft 600 as the center.

[0057] When the cavity door 200 becomes misaligned with the cavity body 100 due to deformation, the operator applies a closing force F. At this time, under the action of the closing force F, the second rotating shaft 700 moves the cavity door 200 closer to the cavity body 100; the first rotating shaft 600 is subjected to a reverse force, causing the first hinge mounting base 500 to make a slight adjustment of a certain angle θ around the first rotating shaft 600; through the linkage of the two rotating shafts, the posture of the cavity door 200 is automatically adjusted so that the edge of the cavity door 200 gradually aligns with the sealing surface of the cavity body 100; when the cavity door 200 is close to fitting the cavity body 100, the fixing member 900 rigidly locks the first hinge mounting base 500 and the cavity door 200 with a pre-tightening force, eliminating residual gaps. Thus, even when the cavity door 200 undergoes a certain degree of warping deformation, precise alignment can still be ensured through the linkage of the two rotating shafts, so that the sealing performance of the cavity door meets the requirements of the subsequent vacuuming process in the cavity.

[0058] In one specific embodiment, refer to Figure 5The hinge support 300 includes a support body 310. A set of hinge mounting lugs 320 is provided on one side of the support body 310. A first rotating shaft mounting hole 321 for mounting the first rotating shaft 600 is provided on the hinge mounting lugs 320. A set of first mounting holes 302 is provided on the support body 310, which penetrates from one side of the hinge support 300 to the other side. The hinge support 300 is fixed to the outer wall of the cavity 100 by fasteners passing through the first mounting hole group 302.

[0059] In this embodiment, the hinge mounting lugs 320 are a pair of oppositely arranged bosses extending vertically from one side of the support body 310. The distance between the inner sides of the two hinge mounting lugs 320 matches the height of the first hinge mounting seat 500. A first rotating shaft mounting hole 321 is formed in the center of the hinge mounting lugs 320 for mounting the first rotating shaft 600. The first mounting hole group 302 is a threaded hole, evenly distributed on the support body 310, and the support body 310 is fixed to the outer wall of the cavity 100 by bolts or other fasteners.

[0060] In one specific embodiment, refer to Figure 8 The second hinge mounting base 800 includes a pair of opposing hinge plates 801. Each hinge plate 801 has a second pivot mounting hole 802 for mounting the second pivot 700. Each hinge plate 801 also has a third mounting hole group 803 for fasteners to pass through, fixing the hinge plate 801 to the cavity 200. The edges of the hinge plates 801 do not extend beyond the edges of the cavity 200. The hinge plates 801 are a pair of parallel rectangular metal plates. The distance between the two hinge plates 801 matches the height of the first hinge mounting base 500. A second pivot mounting hole 802 is located at the center of each hinge plate 801 for mounting the second pivot 700. All four edges of the hinge plates 801 are rounded, with the outer edges flush with the edges of the cavity 200, and the overall outline does not extend beyond the surface of the cavity 200.

[0061] In one specific embodiment, refer to Figure 7The first hinge mounting base 500 has a third pivot mounting hole 504 on one side for mounting the first pivot 600, and a fourth pivot mounting hole 505 on the other side for mounting the second pivot 700. One side of the first hinge mounting base 500 is located between a set of hinge mounting lugs 320 of the hinge support 300, with the first pivot mounting hole 321 aligned with the third pivot mounting hole 504. The other side of the first hinge mounting base 500 is located between a pair of hinge plate 801 of the second hinge mounting base 800, with the second pivot mounting hole 802 aligned with the fourth pivot mounting hole 505. When the cavity door 200 is opened, the second hinge mounting base 800 drives the first hinge mounting base 500 to rotate around the second pivot 700, while the first hinge mounting base 500 itself rotates around the first pivot 600, forming a dual-axis linkage. When the cavity door 200 is closed, the first hinge mounting base 500 transmits force through the rotating shaft to accurately reset the cavity door 200 to the sealed position.

[0062] In one specific embodiment, one end face of the first hinge mounting base 500 is a vertical end face 501. When the cavity door 200 is opened to its maximum angle, the vertical end face 501 of the first hinge mounting base 500 abuts against the blocking inclined surface 401 of the hinge stop 400. The vertical plane 501 and the blocking inclined surface 401 of the hinge stop 400 constitute a limiting structure for the opening angle of the cavity door 200, avoiding problems such as hinge deformation and interference with the placement of surrounding equipment caused by excessive opening angle of the cavity door.

[0063] In one specific embodiment, refer to Figure 9 and Figure 10 The first rotating shaft 600 includes a mounting bushing 601, a central rotating shaft 602, bolts 604, and locating pins 605. The mounting bushing 601 is disposed within the third rotating shaft mounting hole 504. The central rotating shaft 602 passes through the first rotating shaft mounting hole 321 and the mounting bushing 601. Bolts 604 with washers are screwed into both ends of the central rotating shaft 602 from the outside of the hinge mounting lug 320. Locating pins 605 are inserted into the corresponding pin holes of the central rotating shaft in the pin holes of the hinge mounting lug 320. The structure of the second rotating shaft 700 is the same as that of the first rotating shaft 600.

[0064] In one specific embodiment, refer to Figure 6The hinge stop 400 includes an upper surface 402 and a lower surface 403. A second set of mounting holes 405 is formed on the hinge stop 400, extending from the upper surface 402 to the lower surface 403. The hinge stop 400 is fixed to the hinge support 300 by a stop positioning bolt 406 passing through the second set of mounting holes 405. The lower surface 403 contacts the other side of the hinge support 300. The width of the lower surface 403 is smaller than the width of the upper surface 402 to form the blocking slope 401.

[0065] In one specific embodiment, refer to Figure 6 The second mounting hole group 405 has an elongated hole shape, which is opened along the length direction of the hinge stop 400. The hinge support 300 is provided with bolt holes corresponding to the second mounting hole group 405. The stop positioning bolt 406 passes through the elongated hole and is screwed into the bolt hole for fixation. By moving the stop positioning bolt 406 in the elongated hole, the relative position of the hinge stop 400 and the hinge support 300 can be adjusted, thereby adjusting the maximum opening angle of the cavity door 200.

[0066] In one specific embodiment, refer to Figure 3 The fixing member 900 includes a first fixing member 901 and a second fixing member 902. The first hinge mounting base 500 has a first fixing through hole 502 and a second fixing through hole 503. The first fixing member 901 passes through the first fixing through hole and abuts against the cavity door 200. The second fixing member 902 passes through the second fixing through hole and abuts against the cavity door 200, so as to fix the first hinge mounting base 500 on the cavity door 200.

[0067] In one specific embodiment, the first fixing through hole 502 is a straight hole, and the first fixing member 901 is a bolt used in conjunction with a nut; the second fixing through hole 503 is a threaded hole, and the second fixing member 902 is a screw.

[0068] When the cavity door 200 is closed, the bolt of the first fixing member 901 passes through the straight hole of the first hinge mounting base 500 and is tightened by the nut, tightly fitting the first hinge mounting base 500 with the cavity door 200 and providing the main preload force. The screw of the second fixing member 903 is screwed into the threaded hole of the first hinge mounting base 500 to assist in locking and forming a seal. The pressure on the cavity door is adjusted by adjusting the screw insertion depth. The sealing pressure is regulated by affecting the compression of the sealing strip between the cavity door and the cavity body, ensuring the sealing effect of the hot wire equipment cavity door.

[0069] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A hinge structure for a hot wire equipment cavity door, characterized in that, The hot wire device includes a cavity and an openable cavity door. The cavity door hinge structure includes a hinge support, a hinge stop, a first hinge mounting base, and a second hinge mounting base. One side of the hinge support is a fixed surface for fixing to the outer wall of the cavity. The other side of the hinge support is provided with a hinge stop block, which includes a blocking slope and is positioned towards the first hinge mounting base. One end of the first hinge mounting base is hinged to the hinge support via a first pivot, and the other end of the first hinge mounting base is hinged to the second hinge mounting base via a second pivot. The second hinge mounting base is fixed to the cavity door. A fixing member is provided on the first hinge mounting base. The fixing member passes through the first hinge mounting base and abuts against the cavity door to fix the relative position of the cavity door and the first hinge mounting base.

2. The hinge structure for the hot wire equipment cavity door as described in claim 1, characterized in that, The hinge support includes a support body, a set of hinge mounting lugs is provided on one side of the support body, a first pivot mounting hole for mounting the first pivot is provided on the hinge mounting lugs, and a set of first mounting holes is provided on the support body, penetrating from one side of the hinge support to the other side, and the hinge support is fixed to the outer wall of the cavity by fasteners passing through the first mounting hole set.

3. The hinge structure for the hot wire equipment cavity door as described in claim 2, characterized in that, The second hinge mounting base includes a pair of opposing hinge plates. The hinge plates have a second pivot mounting hole for mounting the second pivot. The hinge plates also have a third mounting hole group for fasteners to pass through, so as to fix the hinge plates to the cavity door. The edge of the hinge plates does not extend beyond the edge of the cavity door.

4. The hinge structure for the hot wire equipment cavity door as described in claim 3, characterized in that, The first hinge mounting base has a third pivot mounting hole on one side for mounting the first pivot, and a fourth pivot mounting hole on the other side for mounting the second pivot. One side of the first hinge mounting base is located between a set of hinge mounting lugs of the hinge support, and the first pivot mounting hole is aligned with the third pivot mounting hole. The other side of the first hinge mounting base is located between a pair of hinge plates of the second hinge mounting base, and the second pivot mounting hole is aligned with the fourth pivot mounting hole.

5. The hinge structure for the hot wire equipment cavity door as described in claim 4, characterized in that, One end face of the first hinge mounting base is a vertical end face. When the cavity door is opened to the maximum angle, the vertical end face of the first hinge mounting base abuts against the blocking slope of the hinge stop.

6. The hinge structure for the hot wire equipment cavity door as described in claim 4, characterized in that, The first rotating shaft includes a mounting bushing, a central rotating shaft, bolts, and locating pins. The mounting bushing is disposed in the mounting hole of the third rotating shaft. The central rotating shaft passes through the mounting hole of the first rotating shaft and the mounting bushing. Bolts with washers are screwed into both ends of the central rotating shaft from the outside of the hinge mounting lug. Locating pins are inserted into the corresponding pin holes of the central rotating shaft in the pin holes of the hinge mounting lug.

7. The hinge structure for the hot wire equipment cavity door as described in claim 1, characterized in that, The hinge block includes an upper surface and a lower surface. A second set of mounting holes is formed on the hinge block, extending from the upper surface to the lower surface. The hinge block is fixed to the hinge support by a positioning bolt passing through the second set of mounting holes. The lower surface of the block contacts the other side of the hinge support. The width of the lower surface of the block is smaller than the width of the upper surface of the block to form the blocking slope.

8. The hinge structure for the hot wire equipment cavity door as described in claim 7, characterized in that, The second mounting hole group has an elongated oval hole. The hinge support is provided with bolt holes corresponding to the second mounting hole group. The stop block positioning bolt passes through the elongated oval hole and is screwed into the bolt hole for fixation. The relative position of the hinge stop block and the hinge support can be adjusted by moving the stop block positioning bolt in the elongated oval hole.

9. The hinge structure for the hot wire equipment cavity door as described in claim 1, characterized in that, The fixing components include a first fixing component and a second fixing component. The first hinge mounting base has a first fixing through hole and a second fixing through hole. The first fixing component passes through the first fixing through hole and abuts against the cavity door. The second fixing component passes through the second fixing through hole and abuts against the cavity door, so as to fix the first hinge mounting base on the cavity door.

10. The hinge structure for the hot wire equipment cavity door as described in claim 9, characterized in that, The first fixing through hole is a straight hole, and the first fixing component is a bolt used in conjunction with a nut; the second fixing through hole is a threaded hole, and the second fixing component is a screw.

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