A short fiber radially oriented reinforced annular active tread extrusion integrated equipment

Abstract

This invention discloses an integrated extrusion equipment for short fiber radially oriented reinforced annular treads. The integrated equipment is fixed on a frame and, from right to left, is connected to a sliding die cover traction device, an electromagnetic vulcanizing sliding die for rubber injection retreading annular treads, a sliding die core drive device, a rubber injection molding machine, and an injection molding machine transmission device. The electromagnetic vulcanizing sliding die for rubber injection retreading annular treads, in conjunction with the sliding die core drive device and the sliding die cover traction device, enables the separation of the inner core portion of the electromagnetic vulcanizing sliding die and the radial movement of the slider portion, thereby achieving the injection molding vulcanization process in one step. This invention solves the technical problems in the prior art where the annular tread is difficult to remove after short fiber reinforced rubber injection molding, and the pressure loss during injection is too large, resulting in poor pre-vulcanized tread molding and complex production processes. It improves the radial orientation degree of the short fiber reinforced tread rubber.

Description

Technical Field

[0001] The invention relates to the technical field of tire pre-vulcanization flexible molds, and in particular to short fiber radial orientation reinforced annular flexible tread extrusion integrated equipment. Background Art

[0002] At present, with the rapid development of my country's economic construction, more attention is paid to the rational use of energy and resources to alleviate the contradiction between my country's energy and resource conservation and economic and social development. It is necessary to accelerate the improvement of energy utilization and vigorously develop a circular economy. At present, there is great development potential for the comprehensive utilization of various resources in my country. For example, my country's annual production of tires is hundreds of millions. How to retread and recycle scrapped tires can not only save energy, save costs and reduce waste pollution, but also obtain greater benefits. However, the existing retreading vulcanization molds generally have the disadvantages of complex structure, cumbersome vulcanization clamping steps, expensive manufacturing cost and low yield.

[0003] Chinese patent CN200920118813.5 discloses a vulcanization mold for replacing the tread of an old tire, specifically, a ring-shaped tread vulcanization mold, comprising a bottom plate and a cover plate, between which are arranged from inside to outside an upper middle mold, a lower middle mold, a cavity, a pattern block, a slider, a guide strip, a mold sleeve with a steam chamber and a steam chamber cover plate, a matching guide strip is arranged between the slider and the mold sleeve, a limiting slide groove is arranged on the inclined plane of the guide strip close to the mold sleeve, a limiting bolt is installed on the mold sleeve and presses against the limiting slide groove, the guide strip is in a "convex" shape, evenly installed on the inner wall of the mold sleeve and corresponding to each pattern block, wear-reducing plates are arranged on both sides of the guide strip, an adjusting ring is arranged outside the cover plate, and a high-pressure steam inlet hole and a high-pressure steam exhaust hole communicating with the steam chamber are arranged on the steam chamber cover plate. The utility model has the advantages of reasonable structure, convenient vulcanization and guaranteed tire quality.

[0004] CN201621403114.1 proposes a self-lubricating tire active mold, which solves the problem that the tire active mold in the prior art uses lubricating oil to reduce friction, which affects the tire quality and increases the production cost. The mold includes a base, an arched seat and an upper cover located at the periphery. The outer surface of the arched seat is provided with a middle sleeve that slides back and forth along its surface. The side of the middle sleeve that is close to the arched seat is provided with a wear-reducing plate, and the wear-reducing plate is provided with a lubricating material for lubricating the matching surface of the arched seat; the arched seat is provided with a T-block for sliding with the upper cover, and the upper cover is provided with an upper cover opening wear-reducing plate and an upper cover closing wear-reducing plate for matching with the T-block; the base is provided with a wear-reducing plate that forms a sliding surface with the arched seat, and the wear-reducing plate is also provided with a lubricating material for lubricating the matching surface of the arched seat. The utility model has a simple structure, is easy to use, does not use any lubricating oil, not only saves production costs, but also can effectively improve the service life of the mold and the wear-reducing plate, and has good practicality.

[0005] CN201220119915.0 A hot plate type active mold, relates to an active mold, wherein a plurality of lower friction plates (8) are distributed at intervals along the periphery of a lower side plate (7) on the upper part of a base (9), a plurality of pattern blocks (4) are arranged along the periphery of the lower side plate in a circumferential direction on the upper part of the lower side plate, the outer part of the pattern blocks is fixedly connected to a slider (6), the outer part of the slider is fixedly connected to a T-shaped guide block (14), the pattern blocks are slidably connected to a middle mold sleeve (15) through the slider and the T-shaped guide block, a pressure ring (18) is arranged on the upper part of the middle mold sleeve along the periphery of a cover plate (3); the middle mold sleeve is arranged as a ring body structure, a steam chamber is arranged in the middle part of the ring body of the middle mold sleeve, and a steam chamber inlet (22) and a steam chamber outlet (19) are arranged on the outer ring surface of the middle mold sleeve to communicate with the steam chamber; the utility model has high heat transfer efficiency through the circulation of a heating medium in the steam chamber, and the processed tire has high quality, and the heat insulation cover reduces heat loss and plays a heat preservation role. However, these molds have the disadvantages of being complex in structure, requiring many screws and bolts, being difficult to disassemble, and being unable to open and close the mold in one go.

[0006] CN201611166376.5 discloses a method for radially oriented molding of short fibers in tire tread rubber. The device for implementing the method includes an inlet section, a transition section, a diversion section, and a shaping section. The cylindrical flow channel in the diversion section is first deformed by 90 degrees. A diversion column with a hexagonal cross section is arranged in the center of the flow channel of the deformed diversion section. The end of the diversion column is connected to the shaping section. The shaping section is composed of upper and lower shaping plates and an inter-plate mold cavity. The flow channel in the shaping section starts from the center, and the rubber is extruded along six flow channels with equal cross sections. The flow channel openings are opposite to the hexagonal sides. The cross-sectional area of ​​the diversion column is 1 / 2 of the cross-sectional area of ​​the cylindrical structure. A pre-vulcanization device for dividing the tire tread surface is provided outside the shaping section. The device overcomes the technical problem in the prior art that the movement direction of the short fiber rubber changes when it is vulcanized in the tire active mold, resulting in a decrease in orientation, improves the radial orientation of the fiber-reinforced tread rubber, and proposes a new method for radial orientation of short fibers. The annular tread can be directly injection molded, but the annular tread is not easy to remove after injection molding, and the pressure loss is too large when injecting rubber, and the pre-cured tread cannot be well molded. Summary of the invention

[0007] In view of this, an object of an embodiment of the present invention is to provide an annular tread active mold to improve the above-mentioned problem.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] A ring-shaped tread active mold, the ring-shaped tread active mold comprises a guide device, an inner movable device, and an outer support device from the inside to the outside, the lower part of the outer support device is connected with a bottom plate, the guide device is connected with the inner movable device, the guide device can move up and down in the vertical direction, and the inner movable device can move along the radial direction of the horizontal circular surface under the action of the guide device;

[0010] When the guide device as a whole moves upward to the highest position in the vertical direction, the inner movable device can correspondingly move toward the center position of the annular tread active mold along the horizontal plane; when the guide device as a whole moves downward to the lowest position in the vertical direction, the inner movable device can move outward, and the outer support device can clamp the inner movable device;

[0011] Furthermore, the guide device includes, from inside to outside, a guide shaft and a support movably connected to the guide shaft;

[0012] Preferably, the outer periphery of the guide shaft is composed of six irregular quadrilateral prisms fixed on the second step end surface of the guide shaft, and the surface of the guide shaft also includes the upper bottom surfaces of the six irregular prisms, the lower bottom surface of the guide shaft, the oblique cylindrical surface, the side surface a and the side surface b of each irregular prism, and the upper surface of the inner step shaft of the guide shaft;

[0013] Preferably, there are twelve oblique cylindrical surfaces, and every two oblique cylindrical surfaces form grooves inwardly, and are placed on both sides of the irregular prism, and the oblique cylindrical surfaces are respectively at an angle of 45 degrees to the central axis direction of the guide shaft;

[0014] Preferably, the outer surface of the inner stepped shaft of the guide shaft is slidably connected to the upper surface of the support; the lower surface of the support protrusion is slidably connected to the outer side surface of the oblique cylindrical surface;

[0015] Furthermore, the guide shaft and the support form a guide rod slider mechanism;

[0016] Furthermore, there are six supports, which are slidably connected to the guide shaft inwardly and slidably connected to the six inner active molds outwardly;

[0017] Preferably, when the annular tread active mold is in a punching state, the supporting main surface is in contact with and matched with the second stepped end surface of the guide shaft inside the guide shaft;

[0018] Furthermore, the side surface of the support protrusion of the support is slidably connected to the middle surface of the oblique cylindrical surface;

[0019] Further, the oblique cylindrical surface is slidably connected to the support, the support is a "T"-shaped body, the main surface of the support is "T"-shaped, the angle between the upper surface of the support and the horizontal plane is negative 45 degrees, the angle between the lower surface of the support protrusion and the horizontal plane is 45 degrees, the side surface of the support protrusion is perpendicular to the upper surface of the support and the lower surface of the support protrusion, and the lower surface of the support protrusion is perpendicular to the vertical surface of the support;

[0020] Further, when the annular tread active mold is in a closed state, the support rear-view surface of the support moves upward to align with the upper surface of the guide shaft;

[0021] Furthermore, the inner movable device includes an inner movable mold, and the inner movable mold is movably connected inwardly with the support; when the guide device moves downward to the lowest position, the outer circumferential arc end surface of the inner movable mold forms a surface contact with the outer movable mold b in the outer support device, and the inner movable mold is engaged with the outer movable mold b;

[0022] Furthermore, when the guide device moves downward to the lowest position, the inner active mold can be engaged with the inner step end surface of the outer active mold and the inner circumferential surface II of the outer active mold in the outer active mold b through the inner step end surface of the inner active mold and the inner active mold engaging surface;

[0023] Furthermore, when the guide device moves downward to the lowest position, the inner circumferential surface I of the outer active mold can contact the outer convex surface of the inner active mold.

[0024] Preferably, the inner circumferential surface I of the outer flexible mold is provided with a tire pattern;

[0025] Furthermore, the annular tread active mold includes, from the inside to the outside, a guide shaft, a support, an inner active mold, an outer active mold a, and an outer guide shaft in sequence. There are six outer guide shafts, which are respectively placed on the upper horizontal planes of the six extensions of the bottom plate. The outer guide shaft is movably connected to the outer active mold a. The outer active mold a is movably connected to the outer side surface of the outer active mold b along the outer curved surface circle direction and fixedly connected along the vertical direction. There are six inner active molds, and the outer circumferential arc end surface of the inner active mold is movably connected to the inner side surface of the outer active mold b along the inner curved surface circle direction and fixedly connected along the vertical direction. There are six latches, which respectively fix the six outer active molds b.

[0026] Furthermore, the guide shaft of the annular tread active mold is connected to a control system, and the outer active mold b is connected to a temperature control and pressure system;

[0027] Furthermore, the outer active mold b of the annular tread active mold is provided with various sensors, including but not limited to pressure sensors and temperature sensors.

[0028] Furthermore, when the outer active die a and the outer guide shaft cooperate, the lower end surface of the outer active die b contacts the bottom plate;

[0029] Furthermore, the inner surface of the inner active mold includes an inner plane, an arc surface a, an arc surface b, and a stepped side surface of the inner active mold.

[0030] Preferably, the inner surface of the outer active mold a is snap-connected with the outer buckle surface I of the outer active mold b, the outer buckle surface II of the outer active mold b, the outer buckle surface III of the outer active mold b, the outer buckle surface IV of the outer active mold b, and the middle part of the outer surface of the outer active mold b;

[0031] Furthermore, when the outer active mold a and the outer active mold b are assembled, the side surface of the outer active mold a is flush with both ends of the middle part of the outer surface of the outer active mold b; the upper surface of the outer active mold a clamps the upper surface of the outer active mold b;

[0032] Furthermore, the outer surface I of the buckle of the outer active mold b is an inner inclined surface;

[0033] Furthermore, the two ends of the outer active mold b are provided with a locking mechanism I and a locking mechanism II, the locking mechanism I is a protruding structure, and the locking mechanism II is a recessed structure; two adjacent outer active molds b can be fixed in the circumferential direction by the locking mechanism I and the locking mechanism II;

[0034] Furthermore, when the annular tread active mold is in a closed state, the outer circumferential arc end surface of the inner active mold is in surface contact with the inner circumferential arc end surface of the outer active mold b;

[0035] Furthermore, the guide shaft is slidably connected with the inner active mold along the vertical direction through a support;

[0036] Furthermore, the support lower surface is slidably connected to the inner cavity surface of the inner active mold;

[0037] Furthermore, the inner cavity surface of the inner flexible mold is open on one side and closed on the other side;

[0038] Furthermore, the sub-side surface c and the sub-side surface d are respectively connected to the inner surface I of the inner active mold in a sliding manner along the vertical direction;

[0039] Furthermore, the outer support device includes, from inside to outside, an outer active die b, an outer active die a, and an outer guide shaft;

[0040] Furthermore, the number of the outer active dies a is six, and the outer guide shaft is movably connected to the outer active dies a;

[0041] Furthermore, the outer side of the outer active mold a has an oblique "T" wedge-shaped component, and the oblique "T" wedge-shaped component is slidably connected with the oblique "T" space formed by the gaps of the middle surface I, middle surface II, middle surface III, and middle surface IV of the outer guide shaft;

[0042] Furthermore, the oblique contact surface of the outer guide shaft is movably connected with the outer side surface I of the outer active mold a, the outer side surface II of the outer active mold a, and the outer side surface III of the outer active mold a;

[0043] Further, the outer guide shaft in the outer support device is connected to the bottom plate at the bottom;

[0044] Furthermore, the lower surface of the guide shaft is a regular hexagon, and the regular hexagonal surface is circumscribed to the middle through hole of the bottom plate, so that the regular hexagonal surface passes through the middle through hole of the bottom plate;

[0045] Preferably, the outer guide shaft in the outer support device is fixedly connected to the bottom plate at the bottom;

[0046] Furthermore, the outer guide shaft in the outer support device is fixedly connected to the bottom plate at the bottom through a lower bottom column;

[0047] As a second preferred embodiment of the present invention, the outer guide shaft in the outer support device is slidably connected to the bottom plate through the circumference of the lower part of the lower bottom column at the lower part;

[0048] As a third preferred embodiment of the present invention, in order to facilitate installation and disassembly, the outer guide shaft is slidably connected to the bottom plate in the vertical direction at the bottom, and the outer guide shaft can move up and down in the vertical direction of the bottom plate;

[0049] Furthermore, the bottom plate is provided with six holes in the circumference thereof and matched with the outer guide shaft, and the inner circumferential surfaces of the six holes are clamping structures, and when the outer guide shaft can move up and down in the vertical direction of the bottom plate, the clamping structure can fix the outer guide shaft in the vertical direction of the bottom plate;

[0050] Furthermore, there are six outer active molds b, and a connection port is provided on the upper part of the outer active mold b. A latch is inserted into the connection port to fix and connect two adjacent outer active molds b.

[0051] Preferably, the locking mechanism III on the upper part of the outer active mold b is provided with a connection port, and the connection port is along the horizontal plane direction, and the latch is in a circular ring shape and inserted into the connection port.

[0052] Preferably, in order to better clamp the six external active molds b, the locking mechanism III on the upper part of the external active mold b is provided with a connection port, and the connection port is along the vertical plane direction. The latch is in the shape of a long strip and inserted into the connection port. The side plane of the external active mold b is provided with a vertical channel, which is in the same line as the vertical channel of the connection port provided above the locking mechanism III. The latch is inserted into the vertical channel, and there is also an opening along the horizontal plane direction. The latch is fixed with circular pins on both sides.

[0053] Preferably, when the guiding device as a whole moves upward to the highest position in the vertical direction, a cavity is formed. When the cavity is filled with rubber, the center hole of the upper cover A clamps the outer circular arc end face in the middle of the inner active mold (that is, the outer convex surface of the inner active mold), and the outer active mold b clamps the outer circumference of the upper cover A; the horizontal surface of the upper cover A can be in surface contact and cooperation with the stepped end face of the inner active mold to form a space.

[0054] Furthermore, it should be noted that the stepped end surface of the outer active mold in the outer active mold b and the inner circumferential surface II of the outer active mold can be a symmetrical structure up and down. Therefore, an upper cover A of the same size can also be added to the lower part as a lower bottom plate. The upper and lower bottom plates and the inner circumferential surface I of the outer active mold form an annular cavity, thereby satisfying the molding of the annular tread rather than a stepped annular surface.

[0055] The present invention also relates to an integrated equipment for extruding a short fiber radially oriented reinforced annular active tread, which includes an electromagnetic vulcanization active die for annular tread of a rubber injection retread tire, an active die upper cover traction device (hydraulic cylinder), an active die core driving device (hydraulic cylinder), a rubber injection machine, and an injection machine transmission device;

[0056] The annular flexible tread extrusion integrated equipment is fixed on the frame, and is connected with a flexible mold upper cover traction device (hydraulic cylinder), a rubber injection retread tire annular tread electromagnetic vulcanization flexible mold, a flexible mold core driving device (hydraulic cylinder), a rubber injection machine, and an injection machine transmission device in sequence from right to left;

[0057] Preferably, the electromagnetic vulcanization active mold for the annular tread of the rubber injection retread tire cooperates with the active mold core driving device and the active mold upper cover traction device to achieve the separation of the inner core part of the electromagnetic vulcanization active mold for the annular tread of the rubber injection retread tire and the radial movement of the slider part, thereby realizing the injection molding vulcanization process at one time.

[0058] Preferably, the right end of the active mold upper cover traction device (hydraulic cylinder) is fixed on the right end plane of the frame, and the right side of the rubber injection retread tire annular tread electromagnetic vulcanization active mold is connected to the active mold upper cover traction device (hydraulic cylinder);

[0059] Furthermore, the electromagnetic vulcanization active mold for the annular tread of a rubber injection retread tire comprises a base fixed on a frame, an active mold core driving device (hydraulic cylinder) fixed on an inner core driving push plate, a hydraulic cylinder rod of the active mold core driving device (hydraulic cylinder) and the base are fixed by threads, and a push plate transmission rod installed on the inner core driving push plate passes through the base and is connected with the transmission rod on the inner core of the base through threads to form a spiral pair;

[0060] Furthermore, the push plate transmission rod passes through three holes opened in the base, and there is a clearance fit between the push plate transmission rod and the holes;

[0061] Furthermore, the rubber injection machine is fixed on a frame, and an extruder commonly used in the prior art can be used as injection equipment;

[0062] Further, the rubber injection machine is connected via a reducer transmission of the injection machine transmission device;

[0063] Preferably, the rubber injection machine is connected to an injection machine control system and an injection machine temperature control system; the injection machine transmission device includes a motor connected to a reducer and fixed on a frame;

[0064] Furthermore, the electromagnetic vulcanization active mold for the annular tread of a rubber injection retread tire can produce an annular vulcanized tread;

[0065] Preferably, the electromagnetic vulcanization active mold for the annular tread of a rubber injection retread tire comprises a bow-shaped seat and a pattern block equipment mate, a small upper cover slider, a large upper cover slider, an upper cover inner core, a base inner core, a small base slider, and a large base slider;

[0066] Preferably, the top of the flexible mold upper cover is connected to the flexible mold upper cover traction device (hydraulic cylinder), and the outer side wall has an upper cover mold opening T-block that cooperates with the T-slot of the frame at three locations;

[0067] The top of the inner wall of the upper cover of the active mold is equipped with three upper cover mold opening delay rods for controlling the contraction amount of the upper cover inner core slider and a slider upper cover guide rail (matching pressure plate) for controlling the radial movement of the inner core slider. The upper cover small slider and the upper cover large slider are respectively equipped with a matching upper cover small slider transverse T-block and upper cover large slider transverse T-block;

[0068] There is a bow-shaped seat guide (with baffle) around the inner wall of the upper cover of the flexible mold, and ten bow-shaped seats and pattern blocks are equipped to cooperate with it.

[0069] Furthermore, the axial angle between the arch seat guide rail (with baffle plate) and the traction device (hydraulic cylinder) of the upper cover of the active mold is 15°;

[0070] Furthermore, the upper cover mold opening delay rod is connected to the upper cover of the flexible mold by threads, and is connected to the upper cover traction device (hydraulic cylinder) of the flexible mold; the other end is fixedly connected with the hole opened in the upper part of the inner core of the upper cover; the fixed connection method can be achieved by threading the lower end of the upper cover mold opening delay rod, passing through the hole opened in the upper part of the inner core of the upper cover, and fixing the lower end with a bolt having a diameter larger than the hole and the thread, etc. in a combination of one or more existing technologies;

[0071] Preferably, there are three holes opened on the upper part of the inner core of the upper cover;

[0072] Preferably, the bow seat and the pattern block equipment mate are connected by screws, the T-block of the bow seat is wound with a heating electromagnetic coil, the pattern block can be replaced according to the different treads to be retreaded, and exhaust holes are processed on the pattern block. During tread injection molding, the gas in the mold cavity is discharged outside the mold through the exhaust holes of the pattern block and the gap between the bow seat and the upper cover of the active mold.

[0073] The upper cover small slider has a transverse T-shaped block and a longitudinal T-shaped block on the upper cover small slider on the upper part and the back part respectively, which cooperate with the slider upper cover guide rail (matching pressure plate) of the active mold upper cover and the upper cover small slider guide rail (matching pressure plate) of the upper cover inner core to control the radial contraction of the upper cover small slider;

[0074] The small slider of the upper cover cooperates with the groove of the large slider of the base to form a flow channel, wherein the angle of the longitudinal T-block of the small slider of the upper cover on the back of the small slider of the upper cover is greater than the longitudinal T-block angle of the large slider of the upper cover, so that the radial movement of the small slider of the upper cover is greater than that of the large slider of the upper cover.

[0075] Further, the angle of the longitudinal T-block of the small slider of the upper cover is 17°, and the angle of the longitudinal T-block of the large slider of the upper cover is 12°;

[0076] Preferably, the upper cover large slider has a transverse T-block and a longitudinal T-block on the upper cover large slider on the upper and back, respectively, which cooperate with the slider upper cover guide rail (matching pressure plate) of the active mold upper cover and the upper cover large slider guide rail (matching pressure plate) of the upper cover inner core; control the radial contraction of the upper cover large slider, and the upper cover large slider cooperates with the groove of the small slider of the base to form a flow channel.

[0077] Preferably, the inner core of the upper cover cooperates with three large upper cover sliders and three small upper cover sliders respectively, and the different angles of the side wall slopes control the radial shrinkage of the sliders. The shrinkage of the small upper cover slider is greater than that of the large upper cover slider, thereby avoiding interference between the sliders. It cooperates with the upper cover mold opening delay rod to ensure that the inner core of the upper cover is separated from the inner core of the base after the pattern blocks are completely molded, thereby avoiding scratches on the tread pattern and ensuring the quality of the tread pattern. At the same time, the active mold upper cover drives the radial three small upper cover sliders and three large upper cover sliders to shrink, thereby demolding the inner wall of the annular tread.

[0078] Preferably, the inner core of the base is matched with three small base sliders and three large base sliders respectively, and the different angles of the side wall slopes play a role in controlling the radial contraction of the sliders. The contraction of the small base sliders is greater than that of the large base sliders, thereby avoiding interference between the sliders;

[0079] The bottom of the base core cooperates with the rubber injection nozzle through the gate. The rubber passes through the flow channel of the base core and is distributed in six radial flow channels on the interface between the upper cover core and the base core. Then it enters the mold cavity through the flow channel grooves on the large and small sliders of the base for molding. When the upper cover of the flexible mold drives the upper cover core to open the mold for a safe distance, the active mold core driving device (hydraulic cylinder) pushes the base back and presses the inner core to drive the push plate (hydraulic cylinder fixed plate). The inner core drives the push plate (hydraulic cylinder fixed plate) to make the base core move axially through the push plate transmission rod, driving the three small sliders of the base and the three large sliders of the base to shrink radially, so that the inner wall of the annular tread is demolded, and the material connection between the main flow channel and the rubber injection machine is broken, so that the entire annular vulcanized tread is demolded together with the flow channel.

[0080] Preferably, the small slider of the base has a transverse T-block of the small slider of the base at the bottom and a longitudinal T-block of the small slider of the base on the back, which respectively cooperate with the slider base guide rail (matching pressure plate) and the small slider guide rail (matching pressure plate) of the base inner core to control the radial contraction of the slider, and the large slider of the upper cover cooperates with the groove of the small slider of the base to form a flow channel, wherein the angle of the longitudinal T-block of the small slider of the base on the back of the small slider of the base is greater than the angle of the longitudinal T-block of the large slider of the base, so that the radial movement of the small slider of the base is greater than that of the large slider of the base.

[0081] The large slider of the base has a transverse T-block of the large slider of the base at the bottom and a longitudinal T-block of the large slider of the base at the back, which respectively cooperate with the slider base guide rail (matching pressure plate) and the large slider guide rail (matching pressure plate) of the base inner core to control the radial contraction of the slider. The small slider of the upper cover cooperates with the groove of the large slider of the base to form a flow channel, wherein the angle of the longitudinal T-block of the large slider of the base at the back of the large slider of the base is smaller than the angle of the longitudinal T-block of the small slider of the base, so that the radial movement of the large slider of the base is smaller than that of the small slider of the base.

[0082] Further, the longitudinal T-block angle of the small slider of the base is 17°, and the longitudinal T-block angle of the large slider of the base is 12°;

[0083] Preferably, the base has six slider base guide rails (pressure plates) on the top, which cooperate with the transverse T-blocks of the small slider of the base and the transverse T-blocks of the large slider of the base to control the radial contraction of the small slider of the base and the large slider of the base. There is a hole in the center of the base to avoid air contact with the nozzle of the rubber injection machine, and there are three holes to connect the push plate transmission rod with the inner core of the base. The bottom of the base is connected to the push rod of the active mold core driving device (hydraulic cylinder), and the base itself is fixed on the frame.

[0084] Preferably, the inner core driving push plate (hydraulic cylinder fixed plate) is connected to the inner core of the base through a push plate transmission rod, and the cylinder body of the active mold core driving device (hydraulic cylinder) is fixed on the inner core driving push plate (hydraulic cylinder fixed plate). When working, the active mold core driving device (hydraulic cylinder) pushes the inner core driving push plate (hydraulic cylinder fixed plate) in reverse to drive the inner core of the base to move.

[0085] Furthermore, the upper cover and the base of the flexible mold can rotate; at this time, the upper cover of the flexible mold is driven by the gears in the prior art, and the gears are driven by the motor reduction box, thereby driving the upper cover of the flexible mold.

[0086] Preferably, the base and the upper cover of the flexible mold are not fixed on the frame, and the electromagnetic vulcanization flexible mold for the annular tread of the rubber injection retread tire can rotate 360° around the horizontal axis as a whole, and the two ends are supported on the frame by bearings and other existing technical structures.

[0087] Furthermore, the upper cover and the base of the flexible mold are connected by a snap-fit ​​structure, thereby ensuring the airtightness of the two when they rotate.

[0088] In a preferred embodiment, the gate portion has a gate sleeve, which is fixedly connected to the base, and the gate sleeve can also rotate;

[0089] The present invention also relates to an extrusion method of a short fiber radially oriented reinforced annular active tread extrusion integrated equipment, that is, a method for manufacturing a short fiber radially oriented reinforced annular active tread, comprising the following steps:

[0090] 1) When the electromagnetic vulcanization active mold for the annular tread of the rubber injection retread tire is in the mold-closing and non-working state, the rubber injection machine injects the rubber in the viscous flow state into the flow channel through the air-avoiding hole of the base and the inner core driving push plate (hydraulic cylinder fixed plate); after the rubber fills the entire mold cavity, the rubber injection machine maintains the pressure, and the electromagnetic heating control system of the mold starts to work. The electromagnetic coil wound on the bow seat and the tread block equipment ligand heats the bow seat, and the bow seat heats the tread block through heat conduction, thereby heating and vulcanizing the rubber;

[0091] 2) After the vulcanization process is completed, the upper cover traction device (hydraulic cylinder) of the active mold upper cover works first, and the active mold upper cover is opened; the upper cover of the active mold moves axially on the frame due to the upper cover mold opening T-block, and the bow seat and the pattern block equipment mate are slowly opened by the bow seat guide rail (matching baffle), so that the pattern block is separated from the tread pattern; the upper cover large slider and the upper cover small slider move axially due to the traction force of the slider upper cover guide rail (matching pressure plate), and are radially contracted by the upper cover large slider guide rail (matching pressure plate) and the upper cover small slider guide rail (matching pressure plate), wherein the small slider contracts faster than the large slider, so that the inner wall of the tread is separated from the slider; when the pattern block and the upper cover slider are completely demolded from the tread, the upper cover inner core is separated from the base inner core driven by the upper cover mold opening delay rod; the upper cover is partially opened;

[0092] 3) When the upper cover is opened to a safe distance, the active mold core driving device (hydraulic cylinder) is connected to the base, the cylinder body is connected to the inner core driving push plate (hydraulic cylinder fixed plate), the base is fixed to the frame, and the active mold core driving device (hydraulic cylinder) pushes the inner core driving push plate (hydraulic cylinder fixed plate) in reverse when working, so that the inner core of the base moves axially through the push plate transmission rod, and the base large slider guide rail (matching pressure plate) on the base inner core, the base small slider guide rail (matching pressure plate) and the slider base guide rail (matching pressure plate) make the base small slider and the base large slider contract radially, wherein the base small slider contracts faster than the base large slider, so that the inner wall of the tread is demoulded;

[0093] 4) At the same time, the axial movement of the inner core of the base pulls off the rubber material handle at the connection between the runner and the rubber injection machine, and the annular tread is demoulded;

[0094] 5) After the annular tread and the runner are taken out manually or by a robot, the active mold core driving device (hydraulic cylinder) returns, so that the base inner core and the base small slider and the base large slider return to their positions; then the active mold upper cover traction device (hydraulic cylinder), the bow seat and the pattern block equipment mate, the upper cover inner core, the upper cover small slider, and the upper cover large slider automatically return to their positions through the limit of the base and the base inner core; the whole process is completed.

[0095] Preferably, in step 1), the rubber is short fiber reinforced rubber, preferably polyester fiber, and the short fiber reinforced rubber is extruded and vulcanized using the equipment to obtain a short fiber radially oriented reinforced rubber product.

[0096] The technical solution of the present invention has at least the following advantages and beneficial effects:

[0097] 1. The present invention uses an oblique "T-shaped" support. When the space channel formed by the oblique "T-shaped" support along the guide shaft moves to the lowest and highest positions, the inner active die and the outer support device can form a die space and a mutual contact state respectively;

[0098] 2. The device of the present invention is easy to disassemble, and the working process of the annular tread active mold is realized by using geometric relationship and "T-shaped" support;

[0099] 3. The present invention moves the guide shaft to move the "T-shaped" support along the groove, thereby controlling the opening and closing of the annular tread active mold forming cavity, so that the rubber material enters the next step of the pre-vulcanization process;

[0100] 4. The present invention uses a "T-shaped" support to convert the vertical movement of the guide shaft into the circumferential horizontal movement of the inner active die, and does not require fastening components such as limit bolts, so the structure is simple and easy to operate;

[0101] 5. The present invention reduces the number of fastening components such as bolts, screws, nuts, and positioning parts as much as possible through the active connection relationship between the components, increases the disassembly and high interchangeability, and each component can be cast and can be used for large-scale industrial production;

[0102] 6. In the present invention, the annular end face of the upper cover A and the stepped end face of the inner active mold are in surface contact and cooperation to form a space, and the "T-shaped" support movement causes the inner active mold to move toward the center, thereby changing the circumferential radial direction of the annular active mold cavity, thereby achieving a change in the thickness of the annular tread, and then manufacturing annular pre-cured treads of different thicknesses;

[0103] 7. The annular vulcanized tread produced by the second solution of the present invention has the characteristics of one-time molding, high strength, and no joints when used in retread tires;

[0104] 8. In the second solution of the present invention, the flow channel can be taken out as a whole during operation, eliminating the need for manual cleaning of the rubber flow channel;

[0105] 9. The electromagnetic vulcanization efficiency of the second solution of the present invention is high;

[0106] 10. The second solution of the present invention opens the mold in an orderly manner, and the inner core can shrink to prevent the product from being stretched;

[0107] 11. The second solution of the present invention has high fully automatic production efficiency;

[0108] 12. The mold of the second solution of the present invention is placed horizontally, which is convenient for using existing machines such as rubber injection machines and rubber extruders.

[0109] 13. The second solution of the present invention overcomes the technical problem in the prior art that the orientation degree decreases due to the change in the movement direction of the short fiber rubber during vulcanization in the tire active mold, improves the radial orientation degree of the short fiber reinforced tread rubber, and proposes a new method for radial orientation of short fibers;

[0110] 14. The second solution of the present invention can directly injection mold the annular tread, which overcomes the problems in the prior art that the annular tread is difficult to remove after injection molding, the pressure loss is too large when injecting rubber, the pre-vulcanized tread cannot be well molded, and the production process is complicated. BRIEF DESCRIPTION OF THE DRAWINGS

[0111] Figure 1 It is an overall oblique two-dimensional graph in a preferred embodiment of the present invention;

[0112] Figure 2 It is an overall three-dimensional diagram of the bottom surface of the oblique two-dimensional image in a preferred embodiment of the present invention;

[0113] Figure 3 A diagram of a supporting structure in a preferred embodiment of the present invention;

[0114] Figure 4 A structural diagram of a guide shaft in a preferred embodiment of the present invention;

[0115] Figure 5 A bottom plate diagram in a preferred embodiment of the present invention;

[0116] Figure 6 A three-dimensional diagram of an inner active mold in a preferred embodiment of the present invention;

[0117] Figure 7 A three-dimensional diagram of the outer guide shaft in a preferred embodiment of the present invention;

[0118] Figure 8 A top three-dimensional diagram of the internal and external active module b in a preferred embodiment of the present invention;

[0119] Fig. 9 A top three-dimensional diagram of the inner and outer active module b in another preferred embodiment of the present invention;

[0120] Fig.10 A three-dimensional diagram of the inner and outer active mold b from the inside to the outside in a preferred embodiment of the present invention;

[0121] Fig.11 A three-dimensional diagram of an internal and external active model a in a preferred embodiment of the present invention;

[0122] Fig.12 A three-dimensional diagram of an upper cover A in a preferred embodiment of the present invention;

[0123] Fig.13 A three-dimensional diagram of a small inner active mold in a preferred embodiment of the present invention;

[0124] Fig.14 A three-dimensional diagram of a short fiber radially oriented reinforced annular active tread extrusion integrated equipment according to the second embodiment of the present invention;

[0125] Fig.15 A top view of a short fiber radially oriented reinforced annular active tread extrusion integrated equipment according to the second embodiment of the present invention;

[0126] Fig.16 It is a structural component of the electromagnetic vulcanization active mold for the annular tread of a rubber injection retread tire according to the second embodiment of the present invention;

[0127] FIG. 17 is a three-dimensional view of the inner core of the upper cover of the second solution of the present invention; (a) is a three-dimensional view with the inner core of the cover and the slider, and (b) is a three-dimensional view without the inner core of the cover and the slider;

[0128] Fig.18 This is a diagram showing the matching structure of the inner core part and the slider part of the second solution of the present invention;

[0129] Fig.19 This is a diagram showing the matching structure of the base slider and the base part of the second solution of the present invention;

[0130] Fig. 20 This is a diagram showing the matching structure of the push plate transmission rod and the base portion of the second solution of the present invention;

[0131] Fig.21 This is a diagram showing the matching structure of the push plate transmission rod, the inner core driving the push plate and the base portion of the push plate transmission rod according to the second solution of the present invention;

[0132] Fig. 22 This is a diagram showing the coordination structure of the inner core part, the slider part and the inner core driving push plate part of the second solution of the present invention;

[0133] FIG. 23( a ) is a diagram showing the matching structure of the upper cover large slider and the base small slider of the second solution of the present invention;

[0134] FIG23( b ) is a diagram showing the matching structure of the small slider of the upper cover and the large slider of the base according to the second solution of the present invention;

[0135] Fig.24 This is a diagram showing the matching structure of the upper cover inner core and the base inner core of the second solution of the present invention;

[0136] Fig.25 A structural diagram of an upper cover of an active mold according to another embodiment of the second solution of the present invention;

[0137] Fig.26 A base structure diagram of another embodiment of the second solution of the present invention;

[0138] Fig. 27 A diagram of a buckle structure between an upper cover structure and a base structure of an active mold according to another embodiment of the second solution of the present invention;

[0139] Fig.28A full cross-sectional view of an electromagnetic vulcanization active mold for annular tread of a rubber injection retread tire according to another embodiment of the second scheme of the present invention;

[0140] The names of the parts corresponding to the reference numerals are as follows:

[0141] 1-support, 2-inner active mold, 3-latch, 4-outer active mold a, 5-outer guide shaft, 6-bottom plate, 7-guide shaft, 8-outer active mold b, 9-control system, 10-temperature control and pressure system, 11-support upper surface, 12-support protrusion side, 13-support vertical surface, 14-support main surface, 15-support protrusion lower surface, 16-support lower surface, 17-support rear surface, 21-inner active mold clamping surface, 22-inner active mold step end surface, 231-inner plane, 232-arc surface a, 233-arc surface b, 234- Step side of inner active mold, 24-inner surface of inner active mold Ⅰ, 25-inner cavity surface of inner active mold, 41-inclined "T" wedge-shaped component, 421-outer side surface Ⅰ of outer active mold a, 422-outer side surface Ⅱ of outer active mold a, 423-outer side surface Ⅲ of outer active mold a, 43-side surface of outer active mold a, 44-inner surface of outer active mold, inner surface of outer active mold a, 45-upper surface of outer active mold a, 51-inclined contact surface of outer guide shaft, 521-middle surface Ⅰ, 522-middle surface Ⅱ, 523-middle surface Ⅲ, 524-middle surface IV, 53-lower base column, 71-inclined cylindrical surface, 711-outer side surface of inclined cylindrical surface, 712-middle surface of inclined cylindrical surface, 721-sub-side surface a, 722-sub-side surface b, 723- Side c, 724-side d, 73-upper surface of the inner stepped shaft of the guide shaft, 74-outer surface of the inner stepped shaft of the guide shaft, 75-second stepped end surface of the guide shaft, 811-locking mechanism Ⅰ, 812-locking mechanism Ⅱ, 813-locking mechanism Ⅲ, 821-outer buckle outer surface Ⅰ of the outer active mold b, 822-outer buckle outer surface Ⅱ of the outer active mold b, 823-outer buckle outer surface Ⅲ of the outer active mold b, 824-outer buckle outer surface IV of the outer active mold b, 83-middle part of the outer surface of the outer active mold b, 841-inner circumferential surface Ⅱ of the outer active mold, 842-inner stepped end surface of the outer active mold, 843-inner circumferential surface Ⅰ of the outer active mold, 85-lower end surface of the outer active mold b, A-upper cover, 2"-small inner active mold; 2-1-outer inclined surface of the small inner active mold;

[0142] 100-Rubber injection retread tire annular tread electromagnetic vulcanization active mold, 200-Active mold upper cover traction device (hydraulic cylinder), 300-Active mold core driving device (hydraulic cylinder), 400-Rubber injection machine, 500-Injection machine transmission device, 120-Arch seat and pattern block equipment mate, 130-Upper cover small slider, 140-Upper cover large slider, 150-Upper cover inner core, 200-Active mold upper cover traction device (hydraulic cylinder), 110-Active mold upper cover, 111-Upper cover mold opening delay rod, 112-Upper cover mold opening T-block, 113-Arch seat guide Rail (with baffle), 114-slider cover guide rail (with pressure plate), 131-small slider lateral T-block on the upper cover, 141-large slider lateral T-block on the upper cover, 151-delay hole in the inner core of the upper cover (with baffle), 152-large slider guide rail on the upper cover (with pressure plate), 153-small slider guide rail on the upper cover (with pressure plate), 160-inner core of the base, 161-flow channel, 170-small slider on the base, 180-large slider on the base, 190- Base, 162-base large slider guide rail (with pressure plate), 163-base small slider guide rail (with pressure plate), 164-transmission rod connecting thread, 170-base small slider, 171-base small slider transverse T-block, 180-base large slider, 181-base large slider transverse T-block, 191-inner core drive push plate (hydraulic cylinder 300 fixed plate), 192-push plate transmission rod, 193-slider base guide rail (with pressure plate), 132-upper cover small slider longitudinal T-block, 142-upper cover large slider longitudinal T-block, 171-base small slider transverse T-block, 172-base small slider longitudinal T-block, 181-base large slider transverse T-block, 182-base large slider longitudinal T-block. DETAILED DESCRIPTION

[0143] The present invention is described below in conjunction with the accompanying drawings and specific embodiments.

[0144] To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them.

[0145] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the invention claimed for protection, but merely represents some embodiments of the present invention. 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.

[0146] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0147] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "back" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. Such terms are only used to facilitate the description of the present invention and simplify the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operate in a specific position, and therefore cannot be understood as limiting the present invention.

[0148] It should also be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connect", 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 components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0149] [Scheme 1]

[0150] like Figure 1-13 As shown, the annular tread active mold includes a guide device, an inner movable device, and an outer support device from the inside to the outside, the lower part of the outer support device is connected to a bottom plate 6, the guide device is connected to the inner movable device, the guide device can move up and down in the vertical direction, and the inner movable device can move along the radial direction of the horizontal circular surface under the action of the guide device;

[0151] When the guide device as a whole moves upward to the highest position in the vertical direction, the inner movable device can correspondingly move toward the center position of the annular tread active mold along the horizontal plane; when the guide device as a whole moves downward to the lowest position in the vertical direction, the inner movable device can move outward, and the outer support device can clamp the inner movable device;

[0152] Furthermore, the guide device includes, from inside to outside, a guide shaft 7 and a support 1 movably connected to the guide shaft 7;

[0153] Preferably, the outer periphery of the guide shaft 7 is composed of six irregular quadrilateral prisms fixed on the second stepped end surface 75 of the guide shaft, and the surface of the guide shaft 7 also includes the upper bottom surfaces of the six irregular prisms, the lower bottom surface of the guide shaft 7, the oblique cylindrical surface 71, the side surface a 721 and the side surface b 722 of each irregular prism, and the upper surface 73 of the inner stepped shaft of the guide shaft;

[0154] Preferably, there are twelve oblique cylindrical surfaces 71, and every two oblique cylindrical surfaces 71 form grooves inwardly and are placed on both sides of the irregular prism. The oblique cylindrical surfaces 71 are respectively at an angle of 45 degrees to the central axis direction of the guide shaft 7;

[0155] Preferably, the outer side surface 74 of the inner stepped shaft of the guide shaft is slidably connected to the upper support surface 11 of the support 1; the lower surface 15 of the support protrusion is slidably connected to the outer side surface 711 of the oblique cylindrical surface;

[0156] Furthermore, the guide shaft 7 and the support 1 form a guide rod slider mechanism;

[0157] Furthermore, there are six supports 1, which are slidably connected to the guide shaft 7 inwardly and slidably connected to the six inner active molds 2 outwardly;

[0158] Preferably, when the annular tread active mold is in the punching state, the supporting main surface 14 is in contact with the second step end surface 75 of the guide shaft in the guide shaft 7;

[0159] Furthermore, the side surface 12 of the support protrusion of the support 1 is slidably connected to the middle surface 712 of the oblique cylindrical surface;

[0160] Further, the oblique cylindrical surface 71 is slidably connected with the support 1, the support 1 is a "T"-shaped body, the support main surface 14 of the support 1 is "T"-shaped, the angle between the support upper surface 11 and the horizontal plane is negative 45 degrees, the angle between the support protrusion lower surface 15 and the horizontal plane is 45 degrees, the support protrusion side surface 12 is perpendicular to the support upper surface 11 and the support protrusion lower surface 15, and the support protrusion lower surface 15 is perpendicular to the support vertical surface 13;

[0161] Further, when the annular tread active mold is in a closed state, the support rear-view surface 17 of the support 1 moves upward to align with the upper surface of the guide shaft 7;

[0162] Furthermore, the inner movable device comprises an inner movable die 2, and the inner movable die 2 is movably connected inwardly with the support 1; when the guide device moves downward to the lowest position, the outer arc end surface of the inner movable die 2 forms a surface contact with the outer movable die b8 in the outer support device, and the inner movable die 2 is engaged with the outer movable die b8;

[0163] Furthermore, when the guide device moves downward to the lowest position, the inner active mold 2 can engage with the outer active mold inner step end face 842 and the outer active mold inner circumferential surface II 841 in the outer active mold b 8 through the inner active mold step end face 22 and the inner active mold engaging surface 21;

[0164] Furthermore, when the guide device moves downward to the lowest position, the inner circumferential surface Ⅰ843 of the outer active mold can contact the outer convex surface of the inner active mold 2.

[0165] Preferably, the inner circumferential surface Ⅰ843 of the outer flexible mold is provided with a tire pattern;

[0166] Further, the annular tread active mold includes, from the inside to the outside, a guide shaft 7, a support 1, an inner active mold 2, an outer active mold a4, and an outer guide shaft 5 in sequence. The outer guide shafts 5 are six in number and are respectively placed on the upper horizontal planes of the six extensions of the bottom plate 6. The outer guide shaft 5 is movably connected to the outer active mold a4. The outer active mold a4 is movably connected to the outer side surface of the outer active mold b8 along the outer curved surface circular direction and fixedly connected in the vertical direction. The inner active molds 2 are six in number, and the outer circumferential arc end surface of the inner active mold 2 is movably connected to the inner side surface of the outer active mold b8 along the inner curved surface circular direction and fixedly connected in the vertical direction. The latches 3 are six in number and respectively fixedly connect the six outer active molds b8.

[0167] Furthermore, the guide shaft 7 of the annular tread active mold is connected to a control system 9, and the outer active mold b 8 is connected to a temperature control pressure system 10;

[0168] Furthermore, the outer active mold b8 of the annular tread active mold is provided with various sensors, including but not limited to pressure sensors and temperature sensors.

[0169] Further, when the outer active die a 4 and the outer guide shaft 5 cooperate, the lower end surface 85 of the outer active die b 8 contacts the bottom plate 6;

[0170] Furthermore, the inner surface of the inner active mold 2 includes an inner plane 231 , an arc surface a232 , an arc surface b233 , and an inner active mold stepped side surface 234 .

[0171] Preferably, the inner surface 44 of the outer active mold a is engaged with the outer buckle surface I 821 of the outer active mold b, the outer buckle surface II 822 of the outer active mold b, the outer buckle surface III 823 of the outer active mold b, the outer buckle surface IV 824 of the outer active mold b, and the middle part 83 of the outer surface of the outer active mold b;

[0172] Furthermore, when the outer active mold a 4 is assembled with the outer active mold b 8, the side surface 43 of the outer active mold a is flush with both ends of the middle part of the outer surface of the outer active mold b 8; the upper surface 45 of the outer active mold a clamps the upper surface of the outer active mold b 8;

[0173] Furthermore, the outer surface Ⅰ821 of the buckle of the outer active mold b is an inner inclined surface;

[0174] Furthermore, the two ends of the outer active mold b 8 are provided with a locking mechanism I811 and a locking mechanism II812, wherein the locking mechanism I811 is a protruding structure and the locking mechanism II812 is a recessed structure; two adjacent outer active molds b 8 can be fixed in the circumferential direction by the locking mechanism I811 and the locking mechanism II812;

[0175] Furthermore, when the annular tread active mold is in a closed state, the outer circumferential arc end surface of the inner active mold 2 is in surface contact with the inner circumferential arc end surface of the outer active mold b8;

[0176] Furthermore, the guide shaft 7 is slidably connected with the inner active mold 2 along the vertical direction through the support 1;

[0177] Furthermore, the support lower surface 16 is slidably connected to the inner cavity surface 25 of the inner active mold;

[0178] Furthermore, the inner cavity surface 25 of the inner flexible mold is open on one side and closed on the other side;

[0179] Furthermore, the sub-side surface c 723 and the sub-side surface d 724 are respectively slidably connected with the inner surface Ⅰ24 of the inner active mold along the vertical direction;

[0180] Furthermore, the outer support device includes an outer active die b 8, an outer active die a 4, and an outer guide shaft 5 in sequence from the inside to the outside;

[0181] Furthermore, the number of the outer active molds a4 is six, and the outer guide shaft 5 is movably connected to the outer active molds a4;

[0182] Furthermore, the outer side of the outer active mold a 4 has an oblique "T" wedge-shaped component 41, and the oblique "T" wedge-shaped component 41 is slidably connected with the oblique "T" space formed by the gaps between the middle surface I 521, the middle surface II 522, the middle surface III 523, and the middle surface IV 524 of the outer guide shaft 5;

[0183] Furthermore, the oblique contact surface 51 of the outer guide shaft is movably connected with the outer side surface Ⅰ421 of the outer active mold a, the outer side surface Ⅱ422 of the outer active mold a, and the outer side surface Ⅲ423 of the outer active mold a;

[0184] Further, the outer guide shaft 5 in the outer support device is connected to the bottom plate 6 at the bottom;

[0185] Furthermore, the lower surface of the guide shaft 7 is a regular hexagon, and the regular hexagonal surface is circumscribed to the middle through hole of the bottom plate 6, so that the regular hexagonal surface passes through the middle through hole of the bottom plate 6;

[0186] Preferably, the outer guide shaft 5 in the outer support device is fixedly connected to the bottom plate 6 at the bottom;

[0187] Furthermore, the outer guide shaft 5 in the outer support device is fixedly connected to the bottom plate 6 at the bottom through the lower bottom column 53;

[0188] As a second preferred embodiment of the present invention, the outer guide shaft 5 in the outer support device is slidably connected to the bottom plate 6 through the lower circumference of the lower bottom column 53 at the lower part;

[0189] As a third preferred embodiment of the present invention, in order to facilitate installation and disassembly, the outer guide shaft 5 is slidably connected to the bottom plate 6 in the vertical direction at the lower part, and the outer guide shaft 5 can move up and down in the vertical direction of the bottom plate 6;

[0190] Furthermore, the bottom plate 6 is provided with six holes in the circumference thereof in cooperation with the outer guide shaft 5, and the inner circumferential surface of the six holes is a snap-fit ​​structure, and when the outer guide shaft 5 can move up and down in the vertical direction of the bottom plate 6, the snap-fit ​​structure can fix the outer guide shaft 5 in the vertical direction of the bottom plate;

[0191] Furthermore, there are six outer active molds b 8, and a connection port is provided on the upper part of the outer active mold b 8. The latch 3 is inserted into the connection port to fix and connect two adjacent outer active molds b 8;

[0192] like Figure 8 As shown, preferably, the locking mechanism III813 on the upper part of the outer active mold b 8 is provided with a connection port, and the connection port is along the horizontal plane direction, and the pin 3 is annular and inserted into the connection port.

[0193] like Fig. 9 As shown, as another preferred embodiment of the present invention, in order to better clamp the six external active molds b8, the locking mechanism III813 on the upper part of the external active mold b8 is provided with a connection port, and the connection port is along the vertical plane direction. The pin 3 is long and inserted into the connection port. The side plane of the external active mold b8 is provided with a vertical channel, which is in the same line as the vertical channel of the connection port set above the locking mechanism III 813. The pin 3 is inserted into the vertical channel and there is also an opening along the horizontal plane direction. The pin 3 is fixed on both sides with annular pins.

[0194] like Fig.12 As shown, when the guiding device as a whole moves upward to the highest position in the vertical direction, a cavity is formed. When the cavity is filled with rubber, the middle hole of the upper cover A clamps the outer circular arc end face in the middle of the inner active mold 2 (that is, the outer convex surface of the inner active mold 2), and the outer active mold b8 clamps the outer circumference of the upper cover A; the horizontal surface of the upper cover A can contact and cooperate with the stepped end face 22 of the inner active mold to form a space.

[0195] Furthermore, it should be noted that, as another preferred embodiment of the present invention, the outer active mold inner stepped end face 842 and the outer active mold inner circumferential surface II841 in the outer active mold b 8 can be a symmetrical structure in the upper and lower parts. Therefore, an upper cover A of the same size can also be added to the lower part as a lower bottom plate. The upper and lower bottom plates and the outer active mold inner circumferential surface I843 form an annular cavity, thereby satisfying the molding of an annular tread rather than a stepped annular surface.

[0196] As another preferred embodiment of the present invention, the bottom surface of the support 1 - the support lower surface 16 and the inner cavity surface 25 of the inner active mold can be slidably connected by providing a semicircular protrusion on one surface and a corresponding groove on the other surface, and the two are connected by this guide rail slider mechanism or one or more combinations of other sliding connection methods in the prior art;

[0197] As another preferred embodiment of the present invention, the arc formed by the outer arc plane of the inner active mold 2 and the center point of the guide shaft 7 is 60 degrees;

[0198] As another preferred embodiment of the present invention, the arc formed by the convex surface lines on both sides of the small inner active mold 2" and the arc formed by the center point of the guide shaft 7 is 60 degrees;

[0199] Furthermore, the inner plane 231 contacts the outer inclined surface 2-1 of the small inner active mold 2";

[0200] When the guide shaft 7 is at the highest point, the three inner active molds 2 form a small circle, and when the guide shaft 7 is at the lowest point, the three inner active molds 2 and the small inner active mold 2" form a large circle; the upper and lower limits of the two can ensure that the outer inclined surfaces 2-1 of the small inner active mold 2" do not separate from each other;

[0201] like Figure 1-12 As shown, the preferred embodiment, the process flow of the present invention is as follows:

[0202] (1) The outer flexible mold b 8, the outer flexible mold a 4, and the outer guide shaft 5 of the outer support device are fixed, and the outer flexible mold b 8 forms the outer flexible surface of the tire;

[0203] (2) The control system connected to the guide shaft 7 controls the guide shaft 7 to move upward. When the support 1 moves to the lowest end, that is, the guide shaft 7 moves to the highest point, the horizontal surface of the upper cover A contacts and cooperates with the stepped end surface 22 of the inner active mold. The glue injection machine is used to inject glue into the space between the outer circumferential arc end surface in the middle of the inner active mold 2 and the outer active mold b 8. When the set die punching amount is reached, the glue injection is stopped;

[0204] (3) using a vulcanization heating device in a temperature control and pressure system 10 connected to the annular tread active mold to pre-vulcanize the rubber material injected into the mold cavity, opening the mold after the pre-vulcanization time is reached under certain temperature and pressure conditions, and taking out the pre-vulcanized tread;

[0205] (4) placing the pre-cured tread on the polished tire tread and performing a secondary vulcanization process to finally form a pre-cured reinforced tire;

[0206] As another preferred embodiment of the present invention, the process flow is as follows:

[0207] (1) The control system connected to the guide shaft 7 controls the guide shaft 7 to move upward. When the support 1 moves to the lowest end, that is, the guide shaft 7 moves to the highest point, the rubber strip is wound around the outer surface of the inner active mold 2 through the winding device until the corresponding thickness is reached to achieve die punching, and the glue injection is stopped;

[0208] (2) Fix the outer flexible mold b 8, the outer flexible mold a 4, and the outer guide shaft 5 of the outer support device to form an outer pre-vulcanization circle, and move the upper cover A to seal and compact the upper rubber material;

[0209] (3) using a vulcanization heating device in a temperature control and pressure system 10 connected to the annular tread active mold to pre-vulcanize the rubber material injected into the mold cavity, opening the mold after the pre-vulcanization time is reached under certain temperature and pressure conditions, and taking out the pre-vulcanized tread;

[0210] (4) placing the pre-cured tread on the polished tire tread and performing a secondary vulcanization process to finally form a vulcanized retreaded reinforced tire;

[0211] [Solution 2]

[0212] like Figure 14-28 As shown, as another preferred solution of the annular tread active mold of the present invention, the present invention relates to an integrated equipment for extruding a short fiber radially oriented reinforced annular active tread, the equipment comprises an electromagnetic vulcanization active mold 100 for annular tread of a rubber injection retread tire, an active mold upper cover traction device (hydraulic cylinder) 200, an active mold core driving device (hydraulic cylinder) 300, a rubber injection machine 400, and an injection machine transmission device 500;

[0213] The annular flexible tread extrusion integrated equipment is fixed on the frame, and is connected with a flexible mold upper cover traction device (hydraulic cylinder) 200, a rubber injection retread tire annular tread electromagnetic vulcanization flexible mold 100, a flexible mold core driving device (hydraulic cylinder) 300, a rubber injection machine 400, and an injection machine transmission device 500 in sequence from right to left;

[0214] As another preferred embodiment of the present invention, the electromagnetic vulcanization active mold 100 for the annular tread of a rubber injection retread tire cooperates with the active mold core driving device 300 and the active mold upper cover traction device 200 to achieve the separation of the inner core part of the electromagnetic vulcanization active mold 100 for the annular tread of the rubber injection retread tire and the radial movement of the slider part, thereby realizing the injection molding vulcanization process at one time.

[0215] As another preferred embodiment of the present invention, the right end of the active mold upper cover traction device (hydraulic cylinder) 200 is fixed on the right end plane of the frame, and the right side of the rubber injection retread tire annular tread electromagnetic vulcanization active mold 100 is connected to the active mold upper cover traction device (hydraulic cylinder) 200;

[0216] Furthermore, the electromagnetic vulcanization active mold 100 for annular tread of a rubber injection retread tire includes a base 190 fixed on a frame, an active mold core driving device (hydraulic cylinder) 300 fixed on an inner core driving push plate 191, a hydraulic cylinder rod of the active mold core driving device (hydraulic cylinder) 300 is fixed to the base 190 by threads, and a push plate transmission rod 192 installed on the inner core driving push plate 191 passes through the base 190 and is connected to the transmission rod thread 164 on the base inner core 160 to form a spiral pair;

[0217] Furthermore, the push plate transmission rod 192 passes through three holes opened in the base 190, and there is a clearance fit between the push plate transmission rod 192 and the holes;

[0218] Furthermore, the rubber injection machine 400 is fixed on a frame, and an extruder commonly used in the prior art can be used as injection equipment;

[0219] Further, the rubber injection machine 400 is connected via a reducer transmission of the injection machine transmission device 500;

[0220] As a preferred embodiment of the present invention, the rubber injection machine 400 is connected to the injection machine control system and the injection machine temperature control system; the injection machine transmission device 500 includes a motor connected to a reducer and fixed on a frame;

[0221] Furthermore, the electromagnetic vulcanization active mold 100 for the annular tread of a rubber injection retread tire can produce an annular vulcanized tread;

[0222] As a preferred embodiment of the present invention, the electromagnetic vulcanization active mold 100 for the annular tread of a rubber injection retread tire includes an arch seat and a pattern block equipment mate 120, an upper cover small slider 130, an upper cover large slider 140, an upper cover inner core 150, a base inner core 160, a base small slider 170, and a base large slider 180;

[0223] As a preferred embodiment of the present invention, the upper cover 110 of the flexible mold is connected to the upper cover traction device (hydraulic cylinder) 200 of the flexible mold at the top, and the outer side wall has an upper cover mold opening T-block 112 which cooperates with the T-slot of the frame at three locations;

[0224] The top of the inner wall of the upper cover 110 of the flexible mold is provided with three upper cover mold opening delay rods 111 for controlling the contraction amount of the upper cover inner core slider and a slider upper cover guide rail (matching pressure plate) 114 for controlling the radial movement of the inner core slider. The upper cover small slider 130 and the upper cover large slider 140 are respectively provided with a matching upper cover small slider transverse T-block 131 and upper cover large slider transverse T-block 141;

[0225] There are 10 arched seat guide rails (with baffles) 113 around the inner side wall of the upper cover 110 of the flexible mold, and ten arched seats and pattern block equipment mates 120 are matched therewith.

[0226] Furthermore, the angle between the arched seat guide rail (matching baffle) 113 and the axial direction of the active mold upper cover traction device (hydraulic cylinder) 200 is 15°;

[0227] Furthermore, the upper cover mold opening delay rod 111 is connected to the upper cover 110 of the flexible mold by threads, and is connected to the upper cover traction device (hydraulic cylinder) 200 of the flexible mold; the other end is fixedly connected with the hole opened in the upper part of the upper cover inner core 150; the fixed connection method can be achieved by threading the lower end of the upper cover mold opening delay rod 111, passing through the hole opened in the upper part of the upper cover inner core 150, and fixing it at the lower end by a bolt with a diameter larger than the hole and threading, etc.

[0228] As a preferred embodiment of the present invention, there are three holes opened on the upper portion of the upper cover inner core 150;

[0229] As a preferred embodiment of the present invention, the bow seat is connected to the pattern block equipment mate 120 by screws, the T-block of the bow seat is wound with a heating electromagnetic coil, the pattern block can be replaced according to the different treads to be retreaded, and exhaust holes are processed on the pattern block. During the tread injection molding, the gas in the mold cavity is discharged outside the mold through the exhaust holes of the pattern block and the gap between the bow seat and the upper cover 110 of the active mold.

[0230] The upper cover small slider 130 has a transverse T-shaped block 131 and a longitudinal T-shaped block 132 on the upper and back parts, respectively, which cooperate with the slider upper cover guide rail (matching plate) 114 of the active mold upper cover 110 and the upper cover small slider guide rail (matching plate) 153 of the upper cover inner core 150 to control the radial contraction of the upper cover small slider 130;

[0231] The small slider 130 of the upper cover cooperates with the groove of the large slider 180 of the base to form a flow channel 161, wherein the angle of the longitudinal T-block 132 of the small slider of the upper cover on the back of the small slider of the upper cover 130 is greater than the angle of the longitudinal T-block 142 of the large slider of the upper cover, so that the radial movement of the small slider of the upper cover 130 is greater than that of the large slider of the upper cover 140.

[0232] Further, the angle of the longitudinal T-block 132 of the small slider of the upper cover is 17°, and the angle of the longitudinal T-block 142 of the large slider of the upper cover is 12°;

[0233] As a preferred embodiment of the present invention, the upper cover large slider 140 has an upper cover large slider transverse T-block 141 and an upper cover large slider longitudinal T-block 142 on the upper and back parts respectively, which respectively cooperate with the slider upper cover guide rail (matching pressure plate) 114 of the active mold upper cover 110 and the upper cover large slider guide rail (matching pressure plate) 152 of the upper cover inner core 150; control the radial contraction of the upper cover large slider 140, and the upper cover large slider 140 cooperates with the groove of the base small slider 170 to form a flow channel 161.

[0234] As a preferred embodiment of the present invention, the upper cover inner core 150 cooperates with three upper cover large sliders 140 and three upper cover small sliders 130 respectively. The different angles of the side wall slopes control the radial shrinkage of the sliders. The shrinkage of the upper cover small slider 130 is greater than that of the upper cover large slider 140, avoiding interference between the sliders. It cooperates with the upper cover mold opening delay rod 111 to ensure that the upper cover inner core 150 is separated from the base inner core 160 after the pattern block is completely molded, avoiding scratches on the tread pattern and ensuring the quality of the tread pattern. At the same time, the active mold upper cover 110 drives the radial three upper cover small sliders 130 and the three upper cover large sliders 140 to shrink, so that the inner wall of the annular tread is demolded.

[0235] As a preferred embodiment of the present invention, the base inner core 160 cooperates with three small base sliders 170 and three large base sliders 180 respectively, and the different angles of the side wall slopes play a role in controlling the radial contraction of the sliders. The contraction of the small base slider 170 is greater than that of the large base slider 180, thereby avoiding interference between the sliders.

[0236] The bottom of the base inner core 160 cooperates with the rubber injection nozzle through the gate. The rubber passes through the flow channel 161 that penetrates the base inner core 160, and is distributed in six radial flow channels 161 on the interface between the upper cover inner core 150 and the base inner core 160, and then enters the mold cavity for molding through the flow channel 161 grooves on the base large slider 180 and the base small slider 170. When the active mold upper cover 110 drives the upper cover inner core 150 to open the mold for a safe distance, the active mold core driving device (hydraulic cylinder) 300 pushes the base 190 back, presses the inner core to drive the push plate 191 (hydraulic cylinder 300 fixed plate), and the inner core drives the push plate 191 (hydraulic cylinder 300 fixed plate) through the push plate transmission rod 192 The base inner core 160 moves axially, driving the three small base sliders 170 and the three large base sliders 180 to contract radially, so that the inner wall of the annular tread is demoulded, and the material connection between the main flow channel and the rubber injection machine 400 is broken, so that the entire annular vulcanized tread is demoulded together with the flow channel.

[0237] As a preferred embodiment of the present invention, the base small slider 170 has a base small slider transverse T-block 171 at the bottom and a base small slider longitudinal T-block 172 at the back, which respectively cooperate with the slider base guide rail (matching pressure plate) 193 and the base small slider guide rail (matching pressure plate) 163 of the base inner core to control the radial contraction of the slider. The upper cover large slider 140 cooperates with the groove of the base small slider 170 to form a flow channel 161, wherein the angle of the base small slider longitudinal T-block 172 at the back of the base small slider 170 is greater than the angle of the base large slider longitudinal T-block 182, so that the radial movement of the base small slider 170 is greater than the base large slider 180.

[0238] The large base slider 180 has a transverse T-block 181 at the bottom and a longitudinal T-block 182 at the back, which respectively cooperate with the slider base guide rail (matching pressure plate) 193 and the large base slider guide rail (matching pressure plate) 162 of the base inner core to control the radial contraction of the slider. The small upper cover slider 130 cooperates with the groove of the large base slider 180 to form a flow channel 161, wherein the angle of the longitudinal T-block 182 of the large base slider on the back of the large base slider 180 is smaller than the angle of the longitudinal T-block 172 of the small base slider, so that the radial movement of the large base slider 180 is smaller than that of the small base slider 170.

[0239] Further, the angle of the longitudinal T-block 172 of the small slider of the base is 17°, and the angle of the longitudinal T-block 182 of the large slider of the base is 12°;

[0240] As a preferred embodiment of the present invention, the base 190 has six slider base guide rails (pressure plates) 193 on the top, which cooperate with the base small slider transverse T-block 171 and the base large slider transverse T-block 181 to control the radial contraction of the base small slider 170 and the base large slider 180. The base 190 has a hole in the center to avoid the nozzle of the rubber injection machine 400, and three holes to connect the push plate transmission rod 192 with the base inner core 160. The bottom of the base 190 is connected to the push rod of the active mold core driving device (hydraulic cylinder) 300, and the base 190 itself is fixed on the frame.

[0241] As a preferred embodiment of the present invention, the inner core driving push plate 191 (fixed plate of the hydraulic cylinder 300) is connected to the base inner core 160 through a push plate transmission rod 192, and the cylinder body of the active mold core driving device (hydraulic cylinder) 300 is fixed on the inner core driving push plate 191 (fixed plate of the hydraulic cylinder 300). When working, the active mold core driving device (hydraulic cylinder) 300 pushes the inner core driving push plate 191 (fixed plate of the hydraulic cylinder 300) to drive the base inner core 160 to move.

[0242] Furthermore, the upper cover 110 of the flexible mold and the base 190 can rotate; at this time, the upper cover 110 of the flexible mold is driven by the gears in the prior art, and the gears are driven by the motor reduction box, thereby driving the upper cover 110 of the flexible mold.

[0243] As a preferred embodiment of the present invention, the base 190 and the active mold upper cover 110 are not fixed on the frame, and the rubber injection retread tire annular tread electromagnetic vulcanization active mold 100 can rotate 360° around the horizontal axis as a whole, and both ends are supported on the frame by bearings and other existing technical structures.

[0244] Furthermore, the movable mold upper cover 110 and the base 190 are connected by a snap-fit ​​structure, thereby ensuring the airtightness of the two when they rotate.

[0245] As an implementation method of a preferred embodiment of the present invention, the gate part has a gate sleeve, which is fixedly connected to the base 190, and the gate sleeve can also rotate;

[0246] The present invention also relates to an extrusion method of a short fiber radially oriented reinforced annular active tread extrusion integrated equipment, that is, a method for manufacturing a short fiber radially oriented reinforced annular active tread, comprising the following steps:

[0247] 1) When the electromagnetic vulcanization active mold 100 for the annular tread of the rubber injection retread tire is in a mold-clamped and non-working state, the rubber injection machine 400 injects the rubber in a viscous flow state into the flow channel 161 through the base 190 and the inner core driving push plate 191 (fixed plate of the hydraulic cylinder 300) through the air-avoiding hole; after the rubber fills the entire mold cavity, the rubber injection machine maintains the pressure, and the electromagnetic heating control system of the mold starts to work, and the electromagnetic coil wound on the bow seat and the pattern block equipment ligand 120 heats the bow seat, and the bow seat heats the pattern block through heat conduction, thereby heating and vulcanizing the rubber;

[0248] 2) After the vulcanization process is completed, the upper cover traction device (hydraulic cylinder) 200 of the active mold is first operated, and the active mold upper cover 110 is opened; the active mold upper cover 110 is axially moved on the frame due to the upper cover mold opening T-block 112, and the bow seat and the pattern block equipment mate 120 are slowly opened by the bow seat guide rail (matching baffle 113), so that the pattern block is separated from the tread pattern; the upper cover large slider 140 and the upper cover small slider 130 are opened due to the slider The traction force of the cover guide rail (matching pressure plate) 114 moves axially, and is radially acted upon by the upper cover large slider guide rail (matching pressure plate) 152 and the upper cover small slider guide rail (matching pressure plate) 153 to shrink axially, wherein the shrinking speed of the small slider is faster than that of the large slider, so that the inner wall of the tread is separated from the slider; when the pattern block and the upper cover slider are completely demolded from the tread, the upper cover inner core 150 is separated from the base inner core 160 under the drive of the upper cover mold opening delay rod 111; the upper cover is partially molded;

[0249] 3) After the upper cover is opened to a safe distance, the active mold core driving device (hydraulic cylinder) 300 is connected to the base 190, the cylinder body is connected to the inner core driving push plate 191 (fixed plate of the hydraulic cylinder 300), and the base 190 is fixed to the frame. When the active mold core driving device (hydraulic cylinder) 300 is working, it pushes the inner core driving push plate 191 (fixed plate of the hydraulic cylinder 300) in reverse, so that the base inner core 160 moves axially through the push plate transmission rod 192, and the base large slider guide rail (matching plate) 162, the base small slider guide rail (matching plate) 163 and the slider base guide rail (matching plate) 193 on the base inner core 160 make the base small slider 170 and the base large slider 180 contract radially, wherein the base small slider 170 contracts faster than the base large slider 180, so that the inner wall of the tread is demoulded;

[0250] 4) At the same time, the axial movement of the base inner core 160 pulls off the rubber material handle at the connection between the flow channel 161 and the rubber injection machine 400, and the annular tread is demoulded;

[0251] 5) After the annular tread and the runner are taken out manually or by a robot, the active mold core driving device (hydraulic cylinder) 300 returns, so that the base inner core 160 and the base small slider 170 and the base large slider 180 return to their original positions; then the active mold upper cover traction device (hydraulic cylinder) 200, the bow seat and the pattern block equipment ligand 120, the upper cover inner core 150, the upper cover small slider 130, and the upper cover large slider 140 automatically return to their original positions through the limit of the base 190 and the base inner core 160; the entire process is completed.

[0252] As a preferred embodiment of the present invention, in step 1), the rubber is short fiber reinforced rubber, preferably polyester fiber, and the short fiber reinforced rubber is extruded and vulcanized using the equipment to obtain a short fiber radially oriented reinforced rubber product.

[0253] It should be noted that the present invention relates to an integrated short fiber radial orientation reinforced annular active tread extrusion equipment, which is more suitable for the preparation of short fiber radial orientation reinforced rubber products. Because in the prior art, the radial orientation of the rubber can be achieved through 6 dispersion channels 161 so that the short fibers enter the mold cavity along the flow direction of the rubber, i.e., the channel 161, to complete the molding pre-vulcanization, thereby realizing the preparation of the short fiber radial orientation reinforced rubber pre-vulcanized tread. This method adopts extrusion, molding, and vulcanization as one-piece molding, which is highly efficient.

[0254] Finally, it should be noted that the small upper cover slider 130, the large upper cover slider 140, the small base slider 170, and the large base slider 180 are substantially the same in appearance as the small inner active mold 2" and the inner active mold 2 in the first solution, but the principles are quite different. This solution has a greater space utilization rate, realizes more functions, and is more practical.

[0255] The angle of the longitudinal T-block 172 of the small slider of the base is 17°, and the angle of the longitudinal T-block 182 of the large slider of the base is 12°, which refers to the angle between the inclined surface of the T-block and the vertical line.

[0256] The angle between the arch seat guide rail (matching baffle) 113 and the active mold upper cover traction device (hydraulic cylinder) 200 in the axial direction is 15°; the axial direction refers to the horizontal direction.

[0257] The above embodiments are only used to illustrate and not to limit the technical solutions of the present invention. Any modification or partial replacement that does not deviate from the spirit of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A short fiber radially oriented reinforced annular active tread extrusion integrated equipment, characterized by: The equipment comprises an electromagnetic vulcanization active mold for annular tread of a rubber injection retreaded tire (100), an active mold upper cover traction device (200), an active mold core driving device (300), a rubber injection machine (400), and an injection machine transmission device (500); The annular flexible tread extrusion integrated equipment is fixed on a frame, and is connected to a flexible mold upper cover traction device (200), a rubber injection retread tire annular tread electromagnetic vulcanization flexible mold (100), a flexible mold core driving device (300), a rubber injection machine (400), and an injection machine transmission device (500) in sequence from right to left; The electromagnetic vulcanization active mold (100) for the annular tread of a rubber injection retread tire cooperates with an active mold core driving device (300) and an active mold upper cover traction device (200) to achieve separation of the inner core part of the electromagnetic vulcanization active mold (100) for the annular tread of a rubber injection retread tire and radial movement of the slider part, thereby realizing an injection molding vulcanization process at one time; The right end of the active mold upper cover traction device (200) is fixed on the right end plane of the frame, and the right side of the rubber injection retread tire annular tread electromagnetic vulcanization active mold (100) is connected to the active mold upper cover traction device (200); The electromagnetic vulcanization active mold (100) for annular tread of a rubber injection retreaded tire comprises a base (190) fixed on a frame, an active mold core driving device (300) fixed on an inner core driving push plate (191), a hydraulic cylinder rod of the active mold core driving device (300) and the base (190) being fixed by threads, a push plate transmission rod (192) installed on the inner core driving push plate (191) passing through the base (190) and connecting threads (164) with the transmission rod on the inner core (160) of the base to form a spiral pair; The push plate transmission rod (192) passes through three holes opened in the base (190), and there is a clearance fit between the push plate transmission rod (192) and the holes; The rubber injection machine (400) is fixed on a frame, and can use an extruder commonly used in the prior art as injection equipment; The glue injection machine (400) is connected to the injection machine transmission device (500) through a reducer; The rubber injection machine (400) is connected to an injection machine control system and an injection machine temperature control system; the injection machine transmission device (500) comprises a motor connected to a reducer and fixed on a frame; The electromagnetic vulcanization active mold (100) for annular tread of a rubber injection retread tire can produce annular vulcanized tread; The electromagnetic vulcanization active mold (100) for the annular tread of a rubber injection retreaded tire comprises a bow-shaped seat and a pattern block equipment mate (120), a small upper cover slider (130), a large upper cover slider (140), an upper cover inner core (150), a base inner core (160), a small base slider (170), and a large base slider (180); The top of the flexible mold upper cover (110) is connected to the flexible mold upper cover traction device (200), and the outer side wall is provided with an upper cover mold opening T-shaped block (112) and is matched with the T-shaped slot of the frame at three locations; The top of the inner wall of the upper cover (110) of the flexible mold is provided with three upper cover mold opening delay rods (111) for controlling the contraction amount of the upper cover inner core slider and a slider upper cover guide rail (114) for controlling the radial movement of the inner core slider. The small upper cover slider (130) and the large upper cover slider (140) are respectively provided with a small upper cover slider transverse T-shaped block (131) and a large upper cover slider transverse T-shaped block (141) that match them. There are 10 arched seat guide rails (113) on the inner side wall of the upper cover (110) of the flexible mold, and there are ten arched seats and pattern block equipment parts (120) matched with them; The included angle between the arched seat guide rail (113) and the active mold upper cover traction device (200) in the axial direction is 15°; The upper cover mold opening delay rod (111) is connected to the upper cover of the flexible mold (110) by threads, and is connected to the upper cover traction device (200) of the flexible mold; the other end is fixedly connected with the hole opened in the upper part of the upper cover inner core (150); the fixed connection method can be achieved by opening a thread on the lower end of the upper cover mold opening delay rod (111), passing through the hole opened in the upper part of the upper cover inner core (150), and fixing the lower end with a bolt having a diameter larger than the hole and the thread in combination with one or more combinations of the prior art; The upper part of the upper cover inner core (150) is provided with three holes; The arched seat is connected to the pattern block equipment mate (120) by screws, a heating electromagnetic coil is wound on the T-block of the arched seat, the pattern block can be replaced according to the different treads to be retreaded, and an exhaust hole is processed on the pattern block. During the tread injection molding, the gas in the mold cavity is discharged outside the mold through the exhaust hole of the pattern block and the gap between the arched seat and the upper cover (110) of the flexible mold; The upper cover small slider (130) has an upper cover small slider transverse T-shaped block (131) and an upper cover small slider longitudinal T-shaped block (132) at the upper part and the back part respectively, which cooperate with the slider upper cover guide rail (114) of the active mold upper cover (110) and the upper cover small slider guide rail (153) of the upper cover inner core (150) respectively to control the radial contraction of the upper cover small slider (130); The small slider (130) of the upper cover cooperates with the groove of the large slider (180) of the base to form a flow channel (161), wherein the angle of the longitudinal T-shaped block (132) of the small slider of the upper cover on the back of the small slider (130) of the upper cover is greater than the angle of the longitudinal T-shaped block (142) of the large slider of the upper cover, so that the radial movement amount of the small slider of the upper cover (130) is greater than that of the large slider of the upper cover (140); The angle of the longitudinal T-shaped block (132) of the small slider of the upper cover is 17°, and the angle of the longitudinal T-shaped block (142) of the large slider of the upper cover is 12°; The upper cover large slider (140) has an upper cover large slider transverse T-shaped block (141) and an upper cover large slider longitudinal T-shaped block (142) at the upper part and the back, respectively, which cooperate with the slider upper cover guide rail (114) of the active mold upper cover (110) and the upper cover large slider guide rail (152) of the upper cover inner core (150); the radial contraction of the upper cover large slider (140) is controlled, and the upper cover large slider (140) cooperates with the groove of the base small slider (170) to form a flow channel (161); The upper cover inner core (150) is respectively matched with three upper cover large sliders (140) and three upper cover small sliders (130). The different angles of the side wall slopes play a role in controlling the radial contraction of the sliders. The contraction of the upper cover small slider (130) is greater than that of the upper cover large slider (140). It cooperates with the upper cover mold opening delay rod (111) to ensure that the upper cover inner core (150) is separated from the base inner core (160) after the pattern block is completely molded. At the same time, the active mold upper cover (110) drives the radial three upper cover small sliders (130) and three upper cover large sliders (140) to contract, so that the inner wall of the annular tread is demoulded; the base inner core (160) is respectively matched with three base small sliders (170) and three base large sliders (180). The contraction of the base small slider (170) is greater than that of the base large slider (180), thereby avoiding interference between the sliders; The bottom of the base inner core (160) is matched with the rubber injection nozzle through a gate, and the rubber passes through the flow channel (161) penetrating the base inner core (160), and is distributed in six radial flow channels (161) on the interface between the upper cover inner core (150) and the base inner core (160), and then enters the mold cavity through the flow channel (161) groove on the base large slider (180) and the base small slider (170) for molding. When the upper cover (110) of the active mold drives the upper cover inner core (150) to open the mold safety distance Afterwards, the active mold core driving device (300) pushes the base (190) in reverse, pressing the inner core driving push plate (191), and the inner core driving push plate (191) causes the base inner core (160) to move axially through the push plate transmission rod (192), driving the three small base sliders (170) and the three large base sliders (180) to contract radially, so that the inner wall of the annular tread is demoulded, and the material connection between the main flow channel and the rubber injection machine (400) is broken, so that the entire annular vulcanized tread is demoulded together with the flow channel; The base small slider (170) has a base small slider transverse T-shaped block (171) at the bottom and a base small slider longitudinal T-shaped block (172) at the back, which respectively cooperate with the slider base guide rail (193) and the base small slider guide rail (163) of the base inner core to control the radial contraction of the slider. The upper cover large slider (140) cooperates with the groove of the base small slider (170) to form a flow channel (161), wherein the angle of the base small slider longitudinal T-shaped block (172) at the back of the base small slider (170) is greater than the angle of the base large slider longitudinal T-shaped block (182), so that the radial movement of the base small slider (170) is greater than that of the base large slider (180); The base large slider (180) has a base large slider transverse T-shaped block (181) at the bottom and a base large slider longitudinal T-shaped block (182) at the back, which respectively cooperate with the slider base guide rail (193) and the base large slider guide rail (162) of the base inner core to control the radial contraction of the slider, and the upper cover small slider (130) cooperates with the groove of the base large slider (180) to form a flow channel (161), wherein the angle of the base large slider longitudinal T-shaped block (182) at the back of the base large slider (180) is smaller than the angle of the base small slider longitudinal T-shaped block (172), so that the radial movement amount of the base large slider (180) is smaller than that of the base small slider (170); The angle of the longitudinal T-shaped block (172) of the small slider of the base is 17°, and the angle of the longitudinal T-shaped block (182) of the large slider of the base is 12°; The base (190) has six slider base guide rails (193) on the top, which cooperate with the small slider transverse T-block (171) and the large slider transverse T-block (181) of the base to control the radial contraction of the small slider (170) and the large slider (180). The base (190) has a hole in the center to avoid the air between the nozzle of the rubber injection machine (400), and three holes to connect the push plate transmission rod (192) and the base inner core (160). The bottom of the base (190) is connected to the push rod of the active mold core driving device (300), and the base (190) itself is fixed on the frame. The inner core driving push plate (191) is connected to the base inner core (160) via a push plate transmission rod (192); the cylinder body of the flexible mold core driving device (300) is fixed on the inner core driving push plate (191); when working, the flexible mold core driving device (300) pushes the inner core driving push plate (191) in reverse to drive the base inner core (160) to move.

2. A method for manufacturing a short fiber radially oriented reinforced annular active tread using the short fiber radially oriented reinforced annular active tread extrusion integrated equipment as claimed in claim 1, characterized in that: The following steps are involved: 1) When the electromagnetic vulcanization active mold (100) for the annular tread of a rubber injection retreaded tire is in a mold-clamped and non-operating state, the rubber injection machine (400) injects the polyester short fiber reinforced rubber in a viscous flow state into the flow channel (161) through the base (190) and the air-avoiding hole of the inner core driving push plate (191); after the rubber has completely filled the entire mold cavity, the rubber injection machine maintains the pressure, the electromagnetic heating control system of the mold starts to work, and the electromagnetic coil wound on the arch seat and the pattern block equipment ligand (120) heats the arch seat, and the arch seat heats the pattern block through heat conduction, thereby heating and vulcanizing the rubber; 2) After the vulcanization process is completed, the upper cover traction device (200) of the flexible mold is operated, and the flexible mold upper cover (110) is opened; the flexible mold upper cover (110) is axially moved on the frame due to the upper cover opening T-block (112), and the arch seat and the pattern block equipment mate (120) are slowly opened by the arch seat guide rail (113), so that the pattern block is separated from the tread pattern; the upper cover large slider (140) and the upper cover small slider (130) are moved by The tread is axially moved by the traction force of the slider upper cover guide rail (114), and radially contracted by the upper cover large slider guide rail (152) and the upper cover small slider guide rail (153), wherein the small slider contracts faster than the large slider, so that the inner wall of the tread is separated from the slider; when the pattern block and the upper cover slider are completely demoulded from the tread, the upper cover inner core (150) is separated from the base inner core (160) under the drive of the upper cover mold opening delay rod (111); the upper cover is partially molded; 3) After the upper cover is opened to a safe distance, the active mold core driving device (300) is connected to the base (190), the cylinder body is connected to the inner core driving push plate (191), the base (190) is fixed to the frame, and the active mold core driving device (300) pushes the inner core driving push plate (191) in reverse when working, so that the base inner core (160) moves axially through the push plate transmission rod (192), and the base large slider guide rail (162) on the base inner core (160), the base small slider guide rail (163) and the slider base guide rail (193) cause the base small slider (170) and the base large slider (180) to contract radially, wherein the base small slider (170) contracts faster than the base large slider (180), so that the inner wall of the tread is demoulded; 4) At the same time, the axial movement of the base inner core (160) pulls off the rubber material handle at the connection between the flow channel (161) and the rubber injection machine (400), and the annular tread is demoulded; 5) After the annular tread and the runner are taken out manually or by a robot, the active mold core driving device (300) returns, so that the base inner core (160) and the base small slider (170) and the base large slider (180) return to their original positions; then the active mold upper cover traction device (200), the bow seat and the pattern block equipment mate (120), the upper cover inner core (150), the upper cover small slider (130), and the upper cover large slider (140) automatically return to their original positions through the limit of the base (190) and the base inner core (160); the entire process is completed.

Images