L-shaped ring continuous vulcanization mold and process

Abstract

The invention relates to the technical field of sealing operations, and specifically proposes an L-shaped ring continuous vulcanization mold and a process; an L-shaped ring continuous vulcanization mold, comprising a lifting frame and a servo motor mounted on the lifting end of the lifting frame, the servo motor is used to provide circumferential intermittent rotation output and rotational swing output, the output shaft end of the servo motor is fixed with a radial adjustment frame, the radial adjustment frame comprises two movable beams equidistantly distributed on both sides of the servo motor output shaft and adjusted in opposite directions along the same straight line direction; two movable beams are correspondingly mounted with mold fixing frames, and two mold fixing frames are correspondingly mounted with vulcanization molds; the vulcanization mold provided by the invention improves the adaptability and operating efficiency of L-shaped ring vulcanization, and ensures the quality of vulcanization molding, thereby ensuring the reliability and stability of the gas storage port seal.

Description

Technical Field

[0001] The invention relates to the technical field of sealing operations, and specifically proposes an L-shaped ring continuous vulcanization mold and a process. Background Art

[0002] An artificial chamber-type high-pressure gas storage is a large gas storage space excavated in underground rock layers, which is used to store high-pressure gases such as natural gas and compressed air. The gas storage is usually located in rock areas with stable geological conditions, and uses the natural barrier of underground rocks to isolate and protect the stored gas.

[0003] Artificial chamber-type high-pressure gas storage facilities will be designed with corresponding chamber shape structures according to geological conditions, construction technical requirements and gas storage needs. The most common ones are circular chamber structures. The circular chamber structure is convenient for excavation construction and support reinforcement, easy to carry out standardized construction, and the internal stress distribution is more uniform. It is also easier to achieve sealing, reducing the risk of gas leakage.

[0004] The artificial chamber type high-pressure gas storage is provided with an inlet for inflation and an outlet for deflation. For the gas storage with a circular chamber structure, the inlet and the outlet are generally arranged at the axial end ports of the circular chamber, and the inlet pipe and the outlet pipe are connected to each other. The two ports of the inlet and the outlet are often sealed with rubber rings with L-shaped cross-section structures (referred to as L-shaped rings).

[0005] During the port sealing construction, a pre-vulcanized L-ring can be used as the sealing ring material, and the L-ring can be bonded and fixed to the port sealing by a glue-type adhesive. Subsequently, the glue and the L-ring must be vulcanized as a whole to form a tightly combined whole, thereby improving the bonding strength, improving the physical properties such as heat resistance, corrosion resistance, and aging resistance, extending the service life, and comprehensively improving the sealing stability and reliability. During the vulcanization operation, the L-ring is pressurized and heated simultaneously, so as to achieve vulcanization by hot pressing. In actual operation, hot pressing vulcanization is basically performed manually using a hot pressing plate that fits the inner wall contour of the L-ring. During vulcanization, on the one hand, manual vulcanization operations need to be performed section by section around the entire circle of the L-ring, which is laborious and inefficient. On the other hand, when the corresponding L-rings are of different sizes, the same vulcanization hot pressing plate cannot be effectively fitted with L-rings of different sizes, and the pressure distribution is uneven, which affects the vulcanization molding quality, and then affects the reliability and stability of the seal at the port. Summary of the invention

[0006] In order to solve the above problems, the present invention provides an L-ring continuous vulcanization mold and process, which are used to solve the problems mentioned in the above background technology.

[0007] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an L-shaped ring continuous vulcanization mold, comprising a lifting frame and a servo motor installed at the lifting end of the lifting frame, the servo motor is used to provide circumferential intermittent rotation output and rotational swing output, and the output shaft end of the servo motor is fixed with a radial adjustment frame, and the radial adjustment frame includes two movable beams equidistantly distributed on both sides of the servo motor output shaft and adjusted in opposite directions along the same straight line direction; the two movable beams are respectively equipped with mold fixing frames, and the two mold fixing frames are respectively equipped with vulcanization molds.

[0008] The vulcanization mold includes a mold plate fixed on a mold fixing frame, and a plurality of vulcanization pressure rods are linearly distributed and installed on the mold plate, and the linear distribution direction of the plurality of vulcanization pressure rods is arranged perpendicularly to the moving direction of the moving beam; the vulcanization pressure rods include a guide rod slidably installed on the mold plate and an electric heating rod used to press on the inner wall of the L-shaped ring, the electric heating rod is a right-angle bent round rod structure that is pressed and fitted with the L-shaped inner wall of the L-shaped ring, and rolling sleeves are rotatably sleeved on the two round rod sections of the electric heating rod; the guide rod is fixed to one end of the electric heating rod, and a connecting spring is sleeved on the guide rod, and the two ends of the connecting spring are respectively fixed to the mold plate and the end of the electric heating rod; when the electric heating rod is in close contact with the inner wall of the L-shaped ring, the guide rod adaptively slides in a radial direction parallel to the L-shaped ring.

[0009] A heat insulation cover which flexibly deforms as the guide rods slide is also arranged between the mold plate and the plurality of vulcanization pressure rods; the plurality of electric heating rods are all located under the covering surface of the heat insulation cover.

[0010] Preferably, the mold plate is composed of a sliding plate and a guide hole plate which are arranged perpendicular to each other; the guide rod is slidably mounted on the sliding plate; a plurality of extension holes which are arranged one-to-one corresponding to a plurality of vulcanization pressure rods are provided on the guide hole plate, and the extension holes are extended along the axial direction of the guide rod; one end of the electric heating rod is fixed on the heat insulation cover, and the fixed ends of the heat insulation cover and the guide rod are distributed at both ends of the electric heating rod; a plurality of follower pins which are inserted into the plurality of extension holes in a one-to-one correspondence are fixed on the heat insulation cover, and the follower pins move along the extension holes.

[0011] Preferably, a right-angle cone block is fixed at the right-angle bend of the electric heating rod and is in tight contact with the inner corner edge of the L-shaped ring.

[0012] Preferably, a retractable slide groove is provided on the movable beam, and extended shaft holes are opened on both sides of the retractable slide groove on the movable beam, and the extended shaft holes extend along the length direction of the retractable slide groove; the mold fixing frame includes a retractable and expandable plate slidably arranged in the retractable and expandable slide groove, and the mold plate is fixed at one end of the retractable and expandable plate extending out of the retractable and expandable slide groove, and the other end of the retractable and expandable plate is equipped with a positioning component that cooperates with the movable beam for positioning, and pins that slide along the extended shaft holes on the same side are fixed on both sides of the retractable and expandable plate; when the retractable and expandable plate is completely moved out of the retractable and expandable slide groove and rotated to a perpendicular state with the movable beam, the positioning component and the movable beam are in a positioning and cooperation state, so that the retractable and expandable plate and the movable beam remain perpendicular to each other.

[0013] Preferably, a guide groove extending along the length of the plate is provided at one end of the retractable and deployable plate; the positioning assembly includes a slider slidably installed in the guide groove, and a return spring is connected between the slider and the guide groove; a ball head rod is fixed to the end of the slider facing away from the return spring; and a positioning hole for inserting the ball head rod is provided on the movable beam.

[0014] Preferably, the radial adjustment frame also includes a radial slide rail fixed to the output shaft end of the servo motor, a bearing plate is fixed centrally on the radial slide rail, a bidirectional screw is rotatably mounted on the bearing plate, the two movable beams are slidably mounted in the radial slide rail and are distributed on both sides of the bearing plate, and the two movable beams are threadedly connected to the two threaded sections of the bidirectional screw one by one.

[0015] Preferably, both ends of the two pin shafts are fixed with a socket block; and two positioning pins are vertically penetrated and fixed on the bearing plate and are plugged and matched with the two socket blocks in a one-to-one correspondence.

[0016] Preferably, the heat insulation cover comprises a rubber layer and a flexible metal layer composited on the surface of the rubber layer.

[0017] Preferably, the two rolling sleeves are arranged to be tangent to the right-angled sides at adjacent positions on the right-angle cone block.

[0018] In addition, the present invention also provides an L-shaped ring continuous vulcanization process, comprising the following steps: S1, adjusting by lifting the frame so that the output shaft of the servo motor is aligned with the center of the L-shaped ring.

[0019] S2. The distance between the two vulcanizing molds and the center of the L-shaped ring is synchronously adjusted by the radial adjustment frame, so that the vulcanizing pressure rod is adaptively attached to the inner wall of the arc of the L-shaped ring.

[0020] S3. Move along the axial direction of the L-shaped ring so that the vulcanized pressure rod is tightly attached to the vertical inner end surface of the L-shaped ring.

[0021] S4. The two vulcanizing molds are driven to swing back and forth by the servo motor, and then the reciprocating swing contact area on the L-shaped ring is hot-pressed and vulcanized.

[0022] S5. Adjust the vulcanization contact area between the two vulcanization dies and the L-ring through intermittent rotation of the servo motor.

[0023] S6. Repeat the operation of step S4 to perform hot pressing vulcanization on the new contact area.

[0024] S7, repeating steps S5 and S6, and performing vulcanization operation section by section along the circumference of the L-shaped ring until the vulcanization of the entire ring is completed.

[0025] S8, cooling and shaping the fully vulcanized L-shaped ring.

[0026] The above technical scheme has the following advantages or beneficial effects: the present invention provides an L-shaped ring continuous vulcanization mold, which can perform on-site vulcanization operations on L-shaped rings fixed at the inlet or outlet ports in artificial chamber-type high-pressure gas storage reservoirs. A radial adjustment frame and two sets of vulcanization molds are provided. The adjustment of the radial adjustment frame enables the vulcanization mold to form an adaptive hot-pressing close contact with L-shaped rings of various sizes, thereby ensuring effective hot-pressing and hot-pressing fit during vulcanization. In addition, the vulcanization mold maintains hot-pressing rolling fit with the L-shaped ring through a rolling sleeve. Combined with a single-stage vulcanization method of reciprocating rotation and swinging, the uniformity of the vulcanization hot-pressing contact temperature and pressure distribution is ensured, thereby ensuring the quality of vulcanization molding. By adopting an intermittent rotation switching method, the continuous vulcanization operation of the entire L-shaped ring in sections can be automatically completed. In summary, the vulcanization mold provided by the present invention improves the adaptability and operating efficiency of the vulcanization of the L-shaped ring, and ensures the quality of vulcanization molding, thereby ensuring the reliability and stability of the gas storage reservoir port seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention and its features, configurations and advantages will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings. The same reference numerals indicate the same parts throughout the drawings, which are not drawn to scale, with emphasis on illustrating the subject matter of the present invention.

[0028] Figure 1 It is a three-dimensional structural diagram of an L-shaped ring continuous vulcanization mold.

[0029] Figure 2 It is a three-dimensional structural diagram of an L-shaped ring continuous vulcanization mold from another perspective.

[0030] Figure 3 This is a front view of an L-ring continuous vulcanization mold.

[0031] Figure 4 It is a partial side cross-sectional view of an L-shaped ring continuous vulcanization mold.

[0032] Figure 5 yes Figure 4A partial enlarged view of point B in the middle.

[0033] Figure 6 It is a three-dimensional structural diagram of the moving beam.

[0034] Figure 7 It is a three-dimensional structural diagram of the vulcanization mold assembled on the mold fixing frame.

[0035] Figure 8 It is a three-dimensional structural diagram of the vulcanized pressure rod.

[0036] Fig. 9 The present invention is a process flow chart of a continuous vulcanization process of an L-shaped ring.

[0037] In the figure: 1. servo motor; 2. radial adjustment frame; 21. radial slide rail; 211. bearing plate; 212. positioning pin; 22. bidirectional screw; 23. moving beam; 231. contraction slide groove; 232. extension shaft hole; 233. positioning hole; 3. mold fixing frame; 31. retracting and unfolding plate; 311. guide groove; 312. pin shaft; 313. jack block; 32. positioning assembly; 321. slider; 322. return spring; 323. ball head rod; 4. vulcanizing mold; 41. mold plate; 411. sliding sleeve plate; 412. guide hole plate; 4121. extension hole; 42. vulcanizing pressure rod; 421. guide rod; 422. electric heating rod; 4221. right-angle cone block; 4222. rolling sleeve; 423. connecting spring; 43. heat insulation cover; 431. driven pin; 5. L-shaped ring. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0040] like Figure 1 , Figure 2 and Figure 3As shown, an L-ring continuous vulcanization mold, the vulcanization mold provided by the present invention is used for vulcanizing the L-ring 5 sealed and fixed at the port in an artificial chamber type high-pressure gas storage reservoir; the mold includes a lifting frame and a servo motor 1 installed at the lifting end of the lifting frame, the lifting frame is an existing common lifting support device, and can be a manual or electric lifting adjustment structure. Its specific structure is not described here and is not shown in the accompanying drawings; in order to facilitate transportation and entry and exit of the gas storage reservoir, the servo motor 1 can be fixed to the lifting end of the lifting frame by bolt fixing and other methods that are easy to disassemble and assemble; the servo motor 1 is used to provide circular intermittent rotation output and rotational swing output, and the output shaft end of the servo motor 1 is fixed with a radial adjustment frame 2, and the radial adjustment frame 2 includes two movable beams 23 that are equidistantly distributed on both sides of the output shaft of the servo motor 1 and are adjusted in opposite directions along the same straight line; the two movable beams 23 are respectively equipped with mold fixing frames 3, and the two mold fixing frames 3 are respectively equipped with vulcanization molds 4.

[0041] like Figure 2 and Figure 4 As shown, the radial adjustment frame 2 includes a radial slide rail 21 welded to the output shaft end of the servo motor 1, and the radial slide rail 21 is arranged vertically relative to the output shaft of the servo motor 1; a bearing plate 211 is welded in the center of the radial slide rail 21, and a bidirectional screw 22 is rotatably installed on the bearing plate 211, and two moving beams 23 are slidably installed in the radial slide rail 21, and the two moving beams 23 are equidistantly distributed on both sides of the bearing plate 211, and the two moving beams 23 are threadedly connected to the two threaded sections of the bidirectional screw 22 one by one.

[0042] like Figure 1 , Figure 2 , Figure 4 , Figure 6 and Figure 7As shown, a contraction slot 231 is provided on the movable beam 23, and extended shaft holes 232 are opened on both sides of the contraction slot 231 on the movable beam 23, and the extended shaft holes 232 extend along the length direction of the contraction slot 231; the mold fixing frame 3 includes a retractable plate 31 slidably set in the contraction slot 231, and pins 312 sliding along the extended shaft holes 232 on the same side are welded on both sides of the retractable plate 31. In order to reduce the occupied space and facilitate transportation, when not in use, the folding and unfolding plate 31 is completely retracted in the retraction slide groove 231. In order to achieve the locking between the folding and unfolding plate 31 and the moving beam 23, in the present embodiment, the ends of the two pin shafts 312 are welded with a socket block 313; two positioning pins 212 are vertically penetrated and welded on the bearing plate 211 and are plugged and matched with the two socket blocks 313 in a one-to-one manner. When the folding and unfolding plate 31 is completely retracted, by rotating the bidirectional screw 22, the moving beam 23 drives the folding and unfolding plate 31 to synchronously approach the bearing plate 211, so that the positioning pins 212 can be aligned with the insertion of the socket block 313 to achieve locking. When the vulcanization operation is performed, after the locking of the positioning pin 212 and the jack block 313 is released, the retractable plate 31 can be completely pulled out from the moving beam 23, and the retractable plate 31 can be flipped to a vertical state with the moving beam 23. In order to maintain the mutually vertical state, in the present embodiment, the end of the retractable plate 31 extending into the contraction slide groove 231 is equipped with a positioning assembly 32, and one end of the retractable plate 31 is provided with a guide groove 311 extending along the length direction of the plate; the positioning assembly 32 includes a slider 321 slidably mounted in the guide groove 311, and a return spring 322 is connected between the slider 321 and the guide groove 311; a ball head rod 323 is welded on the end of the slider 321 facing away from the return spring 322; a positioning hole 233 for inserting the ball head rod 323 is provided on the moving beam 23, and when the retractable plate 31 is flipped, the ball head rod 323 can be adaptively aligned and inserted into the positioning hole 233 to achieve relative vertical fixation.

[0043] like Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 7 and Figure 8As shown, the vulcanization mold 4 includes a mold plate 41, and the mold plate 41 is composed of a sliding plate 411 and a guide hole plate 412 arranged perpendicularly to each other; one end of the sliding plate 411 is welded and fixed to the end of the retracting and unfolding plate 31 extending out of the retracting slide groove 231; a plurality of vulcanization pressure rods 42 are linearly and evenly installed on the mold plate 41, and the linear distribution direction of the plurality of vulcanization pressure rods 42 is arranged perpendicularly to the moving direction of the moving beam 23; the vulcanization pressure rods 42 include a guide rod 421 slidably installed on the sliding plate 411 and an electric heating rod 422 for pressing against the inner wall of the L-shaped ring 5, and the electric heating rod 422 is in a straight line and tightly fits against the L-shaped inner wall of the L-shaped ring 5. The electric heating rod 422 is an existing resistance heating rod, and the heating temperature is controllable. The two round rod sections of the electric heating rod 422 are both rotatably sleeved with rolling sleeves 4222, and the rolling sleeves 4222 are in rotational contact with the outer wall of the electric heating rod 422. The guide rod 421 is welded to one end of the electric heating rod 422, and a connecting spring 423 is sleeved on the guide rod 421, and the two ends of the connecting spring 423 are respectively welded to the sliding sleeve plate 411 and the end of the electric heating rod 422. When the electric heating rod 422 is in close contact with the inner wall of the L-shaped ring 5, the guide rod 421 slides adaptively in the radial direction parallel to the L-shaped ring 5. In order to make up for the contact gap between the two rolling sleeves 4222 and the L-shaped ring 5, a right-angle cone block 4221 is welded at the right-angle bend of the electric heating rod 422 to be in tight contact with the inner corner edge of the L-shaped ring 5, and the two rolling sleeves 4222 and the right-angle edges of the adjacent positions on the right-angle cone block 4221 are arranged to be correspondingly tangent.

[0044] like Figure 3 , Figure 4 , Figure 5 and Figure 7 As shown, in order to improve the heat preservation effect during the hot pressing vulcanization process, a heat insulation cover 43 that flexibly deforms as the guide rod 421 slides is also installed between the mold plate 41 and the multiple vulcanization pressure rods 42; the multiple electric heating rods 422 are all located under the covering surface of the heat insulation cover 43; the heat insulation cover 43 includes a rubber layer and a flexible metal layer composited on the surface of the rubber layer. In this embodiment, the flexible metal layer is an aluminum foil layer. The heat insulation cover 43 adopts the above-mentioned composite structure, which on the one hand ensures the deformation elastic force recovery effect, and on the other hand reduces the aging effect of high temperature on the internal rubber layer. The guide hole plate 412 is provided with a plurality of extension holes 4121 corresponding to the plurality of vulcanization pressure rods 42, and the extension holes 4121 are extended along the axial direction of the guide rod 421; one end of the electric heating rod 422 is fixed on the heat insulation cover 43, and the fixed ends of the heat insulation cover 43 and the guide rod 421 are distributed at both ends of the electric heating rod 422; the heat insulation cover 43 is fixed with a plurality of follower pins 431 correspondingly inserted into the plurality of extension holes 4121, and the follower pins 431 move along the extension holes 4121.

[0045] In addition, if Figure 1-9As shown, the present invention also provides an L-shaped ring continuous vulcanization process, comprising the following steps: S1, adjusting by lifting the frame so that the output shaft of the servo motor 1 is aligned with the center of the L-shaped ring 5. Subsequently, the electric heating rod 422 can be preheated to reach the required temperature for vulcanization.

[0046] S2, synchronously adjust the distance between the two vulcanization molds 4 and the center of the L-shaped ring 5 through the radial adjustment frame 2, so that the vulcanization pressure rod 42 is adaptively pressed against the inner wall of the arc of the L-shaped ring 5. Specifically, first, the retracting and unfolding plate 31 is completely pulled out from the moving beam 23 and adjusted to a relatively vertical state, and then, by rotating the bidirectional screw 22, the vulcanization mold 4 is synchronously moved away from the bearing plate 211 along with the moving beam 23 and the mold fixing frame 3, and then the rolling sleeves 4222 on the horizontal sections of all the electric heating rods 422 are pressed against the inner wall of the arc in the L-shaped ring 5. During the pressing process, the connecting spring 423 at each vulcanization pressure rod 42 is adaptively contracted according to the position, so that it can form an adaptive hot pressing fit with L-shaped rings 5 ​​of different sizes.

[0047] S3, move along the axial direction of the L-shaped ring 5, so that the vulcanization pressure rod 42 is closely attached to the vertical inner end surface of the L-shaped ring 5. Specifically, by moving the lifting frame, the vulcanization mold 4 is moved closer along the axial direction of the L-shaped ring 5, so that the rolling sleeve 4222 of the vertical section of the electric heating rod 422 is closely attached to the vertical inner end surface of the L-shaped ring 5.

[0048] S4, the two vulcanization molds 4 are driven to swing back and forth by the servo motor 1, and then the reciprocating swing contact area on the L-shaped ring 5 is hot-pressed and vulcanized. During the reciprocating rotation and swinging process, the electric heating rod 422 is in indirect rolling contact with the inner wall of the L-shaped ring 5 through the rolling sleeve 4222. Through the reciprocating rotation and swinging, on the one hand, the overall hot-pressing contact with the rotating swinging coverage area of ​​the L-shaped ring 5 is ensured, and on the other hand, the overall pressure distribution difference between any hot-pressing contact positions during the entire swinging contact process is reduced, the uniformity of the hot-pressing pressure distribution is improved, and the vulcanization molding quality is indirectly ensured.

[0049] S5, adjusting the vulcanization contact area between the two vulcanization dies 4 and the L-shaped ring 5 by intermittently rotating the servo motor 1.

[0050] S6. Repeat the operation of step S4 to perform hot pressing vulcanization on the new contact area.

[0051] S7, repeating steps S5 and S6, and performing vulcanization operation section by section along the circumference of the L-shaped ring 5 until the vulcanization of the entire ring is completed.

[0052] S8, cooling and shaping the fully vulcanized L-shaped ring 5. Considering the poor air flow in the gas storage, a fan can be used to accelerate the cooling and shaping during the cooling process.

[0053] The present invention provides an L-shaped ring continuous vulcanization mold, which can perform on-site vulcanization operations on the L-shaped ring 5 fixed at the inlet or outlet port in an artificial chamber type high-pressure gas storage reservoir. A radial adjustment frame 2 and two groups of vulcanization molds 4 are provided. The radial adjustment frame 2 is adjusted to enable the vulcanization mold 4 to form an adaptive hot-pressing close contact with the L-shaped ring 5 of various sizes, thereby ensuring effective hot-pressing and hot-pressing fit during vulcanization. In addition, the vulcanization mold 4 maintains hot-pressing rolling fit with the L-shaped ring 5 through a rolling sleeve 4222. Combined with a single-stage vulcanization method of reciprocating rotation and swinging, the uniformity of the hot-pressing contact temperature and pressure distribution during vulcanization is ensured, thereby ensuring the quality of vulcanization molding. By adopting an intermittent rotation switching method, the continuous vulcanization operation of the entire circle of the L-shaped ring 5 can be automatically completed in sections. In summary, the vulcanization mold provided by the present invention improves the adaptability and operating efficiency of the vulcanization of the L-shaped ring 5, and ensures the quality of vulcanization molding, thereby ensuring the reliability and stability of the sealing of the gas storage reservoir port.

[0054] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0055] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] The above describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can make many possible changes and modifications without departing from the technical solution of the present invention, or modify them into equivalent embodiments with equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. An L-shaped ring continuous vulcanization mold, characterized in that: It comprises a lifting frame and a servo motor (1) mounted on the lifting end of the lifting frame, the servo motor (1) being used to provide circumferential intermittent rotation output and rotation swing output, the output shaft end of the servo motor (1) being fixed with a radial adjustment frame (2), the radial adjustment frame (2) comprising two movable beams (23) equidistantly distributed on both sides of the output shaft of the servo motor (1) and capable of reverse movement and adjustment along the same straight line direction; the two movable beams (23) are respectively mounted with a mold fixing frame (3), and the two mold fixing frames (3) are respectively mounted with a vulcanization mold (4); The vulcanization mold (4) comprises a mold plate (41) fixed on a mold fixing frame (3), a plurality of vulcanization pressure rods (42) are linearly distributed and installed on the mold plate (41), and the linear distribution direction of the plurality of vulcanization pressure rods (42) is arranged perpendicular to the moving direction of the moving beam (23); the vulcanization pressure rods (42) comprise a guide rod (421) slidably installed on the mold plate (41) and an electric heating rod (422) for pressing against the inner side wall of the L-shaped ring (5), and the electric heating rod (422) is a right-angled curved round rod structure that is pressed against the L-shaped inner side wall of the L-shaped ring (5); The two round rod sections of the electric heating rod (422) are both rotatably sleeved with a rolling sleeve (4222); the guide rod (421) is fixed to one end of the electric heating rod (422), and a connecting spring (423) is sleeved on the guide rod (421), and the two ends of the connecting spring (423) are respectively fixed to the mold plate (41) and the end of the electric heating rod (422); when the electric heating rod (422) is in close contact with the inner side wall of the L-shaped ring (5), the connecting spring (423) at each vulcanization pressure rod member (42) is adaptively contracted according to its position, and the guide rod (421) adaptively slides in a radial direction parallel to the L-shaped ring (5); A heat insulation cover (43) that flexibly deforms as the guide rods (421) slide is also installed between the mold plate (41) and the plurality of vulcanization pressure rods (42); the plurality of electric heating rods (422) are all located under the covering surface of the heat insulation cover (43); The mold plate (41) is provided with a plurality of elongated holes (4121) arranged in one-to-one correspondence with the plurality of vulcanization pressure rods (42); one end of the electric heating rod (422) is fixed to the heat insulation cover (43); a plurality of driven pins (431) are fixed to the heat insulation cover (43) and are inserted in one-to-one correspondence into the plurality of elongated holes (4121); the driven pins (431) move along the elongated holes (4121); The two vulcanizing molds (4) are driven by the servo motor (1) to swing and rotate back and forth. During the swing and rotating process, the electric heating rod (422) is in indirect rolling contact with the inner wall of the L-shaped ring (5) through the rolling sleeve (4222).

2. The L-shaped ring continuous vulcanization mold according to claim 1, characterized in that: The mold plate (41) is composed of a sliding sleeve plate (411) and a guide hole plate (412) which are arranged perpendicular to each other; the guide rod (421) is slidably mounted on the sliding sleeve plate (411); an extension hole (4121) is provided on the guide hole plate (412), and the extension hole (4121) is extended along the axial direction of the guide rod (421); and the fixed ends of the heat insulation cover (43) and the guide rod (421) are distributed at both ends of the electric heating rod (422).

3. The L-shaped ring continuous vulcanization mold according to claim 1, characterized in that: A right-angle cone block (4221) is fixed at the right-angle bend of the electric heating rod (422) and is in tight contact with the inner corner edge of the L-shaped ring (5).

4. The L-shaped ring continuous vulcanization mold according to claim 1, characterized in that: The movable beam (23) is provided with a contraction slide groove (231), and the movable beam (23) is provided with extension shaft holes (232) on both sides of the contraction slide groove (231), and the extension shaft holes (232) extend along the length direction of the contraction slide groove (231); the mold fixing frame (3) comprises a retractable plate (31) slidably arranged in the contraction slide groove (231), and the mold plate (41) is fixed to one end of the retractable plate (31) extending out of the contraction slide groove (231), and the retractable plate (31) is provided with an extension shaft hole (232) on both sides of the contraction slide groove (231). 1) is equipped with a positioning assembly (32) for positioning with the moving beam (23), and pins (312) are fixed on both sides of the retractable plate (31) for sliding along the extended shaft hole (232) on the same side; when the retractable plate (31) is completely moved out of the contraction slot (231) and rotated to be perpendicular to the moving beam (23), the positioning assembly (32) and the moving beam (23) are in a positioning matching state, so that the retractable plate (31) and the moving beam (23) remain perpendicular to each other.

5. The L-shaped ring continuous vulcanization mold according to claim 4, characterized in that: A guide groove (311) extending along the length direction of the plate is formed at one end of the retractable and unfoldable plate (31); the positioning assembly (32) comprises a slider (321) slidably mounted in the guide groove (311); a return spring (322) is connected between the slider (321) and the guide groove (311); a ball head rod (323) is fixed to one end of the slider (321) facing away from the return spring (322); and a positioning hole (233) for inserting the ball head rod (323) is provided on the movable beam (23).

6. The L-shaped ring continuous vulcanization mold according to claim 4, characterized in that: The radial adjustment frame (2) further comprises a radial slide rail (21) fixed to the output shaft end of the servo motor (1), a bearing plate (211) being fixed in the center of the radial slide rail (21), a bidirectional screw rod (22) being rotatably mounted on the bearing plate (211), two movable beams (23) being slidably mounted in the radial slide rail (21) and distributed on both sides of the bearing plate (211), and the two movable beams (23) being threadedly connected to two threaded sections of the bidirectional screw rod (22) in a one-to-one correspondence.

7. The L-shaped ring continuous vulcanization mold according to claim 6, characterized in that: The ends of the two pin shafts (312) are both fixed with a socket block (313); and the bearing plate (211) is vertically penetrated and fixed with two positioning pins (212) which are plugged and matched with the two socket blocks (313) in a one-to-one correspondence.

8. The L-shaped ring continuous vulcanization mold according to claim 1, characterized in that: The heat insulation cover (43) comprises a rubber layer and a flexible metal layer composited on the surface of the rubber layer.

9. The L-shaped ring continuous vulcanization mold according to claim 3, characterized in that: The two rolling sleeves (4222) are arranged to be tangent to the right-angled sides at adjacent positions on the right-angle cone block (4221).

10. The L-shaped ring continuous vulcanization mold according to claim 1, characterized in that: The process of vulcanizing the L-shaped ring (5) by means of the above-mentioned continuous vulcanization mold specifically comprises the following steps: S1. Adjust the lifting frame so that the output shaft of the servo motor (1) is aligned with the center of the L-shaped ring (5); S2, synchronously adjusting the distance between the two vulcanizing molds (4) and the center of the L-shaped ring (5) by means of the radial adjustment frame (2), so that the vulcanizing pressure rod (42) is adaptively attached to the inner wall of the circular arc of the L-shaped ring (5); S3, moving along the axial direction of the L-shaped ring (5) so that the vulcanized pressure rod (42) is closely attached to the vertical inner end surface of the L-shaped ring (5); S4, driving the two vulcanization molds (4) to swing back and forth through the servo motor (1), and then hot pressing and vulcanizing the reciprocating swinging contact area on the L-shaped ring (5); S5, adjusting the vulcanization contact area between the two vulcanization molds (4) and the L-shaped ring (5) by intermittently rotating the servo motor (1); S6, repeat the operation of step S4 to perform hot pressing vulcanization on the new contact area; S7, repeating steps S5 and S6, performing vulcanization operations section by section along the circumference of the L-shaped ring (5) until the entire ring is vulcanized; S8, cooling and shaping the fully vulcanized L-shaped ring (5).

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