Tire curing bladder forming apparatus and forming method therefor

Abstract

A tire curing bladder forming apparatus, comprising an apparatus body (1), a lower die assembly (2), an upper die assembly (3), a discharging assembly (4) and a conveyor belt (5), wherein the apparatus body (1) comprises a support frame (101), a controller is provided on one side of the support frame (101), a slide rod (102) is provided inside the support frame (101), and an upper sliding seat (103) and a lower sliding frame (104) are respectively provided at two ends of the slide rod (102).

Description

Tire curing bladder molding equipment and molding method Technical Field

[0001] The present invention relates to the technical field of tire production, and in particular to tire curing bladder molding equipment and a molding method thereof. Background Art

[0002] Tire curing bladder is a tool used for tire vulcanization. The main function of the tire curing bladder is to fill it with compressed air, nitrogen or superheated water during the tire vulcanization process to make it stretch, support the tire rubber blank to form internal pressure to facilitate tire vulcanization. It is equivalent to the inner mold of the tire mold. The tire curing bladder mold, as the name suggests, refers to the mold used for curing tire curing bladders.

[0003] Publication number CN115674511A discloses a bladder mold, a molding method for a tire curing bladder, and a tire curing bladder. The bladder mold is used for making a tire curing bladder and includes an outer mold and a core mold. A mold cavity is formed between the inner mold wall of the outer mold and the outer mold wall of the core mold. The mold cavity is adapted to the shape of the tire curing bladder after being turned inside out. The outer mold wall of the core mold has a pattern. The tire curing bladder has low molding efficiency and poor molding effect.

[0004] Publication number CN102990830A discloses a radial tire molding vulcanization bladder forming device, including a machine base, a machine body, support columns, an upper workbench, a lower workbench, an upper core ejection structure, a lower core ejection structure, a lifting cylinder and a hydraulic cylinder. The upper core ejection structure is arranged on the machine body, and the ejection head at its bottom is adapted to the bladder ejection outlet of the upper workbench. The vulcanization bladder molding device cannot achieve rapid demolding, and the demolding effect is poor.

[0005] The above technical solution has some problems in practical application. After being formed, the capsule will be placed on the outside of the core mold. Since it fits tightly with the core mold, it is inconvenient to remove it.

[0006] At the same time, after the tire curing bladder is pressed and molded, a demolding process needs to be performed. However, the existing technology lacks a complete and comprehensive demolding device for the tire curing bladder, which reduces the demolding efficiency and demolding effect of the tire curing bladder, and also lacks a cleaning effect on the internal device, which easily affects the subsequent pressing and molding of the tire curing bladder.

[0007] During processing, excessive viscosity of the blank can easily lead to poor demolding efficiency of the tire curing bladder, or poor demolding degree at some locations of the tire curing bladder. However, the existing technology lacks the function of adjusting the integrity of the tire curing bladder or the demolding efficiency at specific points, thereby reducing the demolding effect.

[0008] When demoulding is completed and unloading is required, the existing technologies lack an efficient gripping and demoulding effect on the tire curing bladder, which easily makes it difficult to remove the tire curing bladder, thereby reducing the unloading effect.

[0009] Therefore, it is necessary to invent a tire curing bladder molding device and a molding method thereof to solve the above problems. Summary of the Invention

[0010] The object of the present invention is to provide a tire curing bladder molding device and a molding method thereof to solve the problems raised in the above background technology.

[0011] To achieve the above-mentioned object, the present invention provides the following technical solutions: a tire curing bladder molding device, comprising a device body, a lower mold assembly, an upper mold assembly, a blanking assembly, and a conveyor belt;

[0012] The device body includes a support frame, a controller is provided on one side of the support frame, a slide rod is provided inside the support frame, and an upper slide seat and a lower slide frame are provided at both ends of the slide rod;

[0013] The lower mold assembly includes a lower mold base, a lower mold cavity is provided at the middle of the top of the lower mold base, a material discharge trough is provided at the top of the inner top of the lower mold cavity, a mold core is slidably connected to the interior of the lower mold cavity, a plurality of slots are provided around the outer wall of the mold core, a movable seat is slidably provided inside the slot, an air guide cavity is provided inside the mold core, a flow rate sensor is provided inside the air guide cavity, a docking hole is provided inside the movable seat, an air guide tube is provided inside the mold core, and one end of the air guide tube is connected to the air guide cavity;

[0014] The docking holes and the air guide cavity are staggered, an arc-shaped extension groove is provided inside the movable seat, a connecting groove is provided between the extension groove and the docking hole, and exhaust ports are provided through the inner walls of both sides of the extension groove, and the exhaust ports extend to the outer wall of the movable seat;

[0015] A power shaft is provided inside the mold core, the bottom end of the power shaft extends to the bottom end of the support column, a double-headed screw is provided at the top end of the power shaft, both ends of the double-headed screw are sleeved with screw sleeves, a plurality of hinged arms are provided around the outside of the screw sleeve, one end of the hinged arm is provided with a fixed seat through a pin shaft, and the fixed seat is fixedly provided on the inner side of the movable seat;

[0016] The upper die assembly includes an upper die base, which is fixed to the middle of the bottom end of the upper slide by a press-fit gas rod. The middle of the bottom end of the upper die base is provided with an upper die cavity. The bottom end of the upper die base is provided with a sealing seat with an annular structure, and the sealing seat corresponds to the discharge trough.

[0017] The blanking assembly includes a mounting seat, a support is provided on one side of the mounting seat, a lifting gas rod is provided at the bottom end of the support, a movable tube is provided at the bottom end of the lifting gas rod, a positioning tube with an annular structure is provided on the outside of the movable tube, an air intake pipe is passed through the outside of the movable tube, and the other end of the air guide pipe is connected to the air intake pipe through an air pump; a telescopic gas rod is provided between the mounting seat and the support, a plurality of connecting tubes are provided between the positioning tube and the movable tube, the connecting tubes correspond to the strip grooves, a plurality of air outlet holes are provided around the bottom end of the positioning tube, and the air outlet holes are arranged to be a conical structure with a larger inner side and a smaller outer side.

[0018] The present invention connects the air guide cavity and the air inlet pipe, thereby improving the demoulding efficiency of the tire curing bladder, and can also perform adaptive adjustment and fixed-point demoulding on the tire curing bladder, with higher demoulding accuracy; and when the demoulding is completed and the material is unloaded, the convenience and stability of grabbing can be improved.

[0019] Preferably, the blanking assembly is arranged on one side of the upper mold assembly, the lower mold assembly, the upper mold assembly and the blanking assembly are all arranged inside the equipment body, the conveyor belt is arranged on one side of the equipment body, the conveyor belt corresponds to the blanking assembly, the controller electrically controls each electrical component, and the flow rate sensor is used to detect the gas flow rate value inside the air guide cavity.

[0020] Preferably, a horizontal gas rod is provided on the top of one side of the lower slide, an extension frame is provided at one end of the lower slide, and the extension frame is fixedly arranged on the top of the support frame, a slide is provided on one side of the horizontal gas rod, the top of the slide is fixedly connected to the bottom of the lower mold base, two groups of sliders are symmetrically provided on the bottom of the slide, and two groups of slide grooves are symmetrically provided on the top of the lower slide and the extension frame, and the slide grooves match the sliders.

[0021] Preferably, a through groove is provided through the middle of the bottom end of the lower mold cavity, a support column is provided through the inside of the through groove, the top end of the support column is fixedly connected to the bottom of the mold core, the other end of the air guide tube extends to the bottom end of the support column, and the mold core is set to a hollow structure.

[0022] Preferably, a positioning seat is provided at the bottom end of the support column, the positioning seat is arranged below the slide, and a spring is provided between the positioning seat and the slide, and sliding sleeves are provided on both sides of the positioning seat, and a sliding column is provided through the interior of the sliding sleeve, and the sliding column is fixedly provided at the bottom end of the slide.

[0023] Preferably, a ring-shaped groove is provided at the top of the mold core, and a plurality of strip grooves are provided around the inner side wall of the groove. The strip grooves are arranged as an inclined structure, the positioning tube corresponds to the groove, and the mounting seat is fixedly arranged on the outer side of the upper slide.

[0024] A molding method for a tire curing bladder molding device, wherein the molding method utilizes the tire curing bladder molding device to press and mold the tire curing bladder, comprising the following steps:

[0025] Step 1: preheating, heating the lower mold assembly and the upper mold assembly through the heating mechanism inside the lower mold assembly;

[0026] Step 2: Discharging the material, adjusting the position between the lower mold assembly and the upper mold assembly so that the lower mold assembly is separated from the upper mold assembly, and placing the annular tire curing bladder blank inside the lower mold assembly;

[0027] Step 3: vulcanization molding, adjusting the positions of the lower mold assembly and the upper mold assembly so that the lower mold assembly and the upper mold assembly are closed. During this process, the annular blank is extruded and molded under the action of the lower mold assembly, the upper mold assembly and the mold core;

[0028] Step 4: Product separation: adjusting the mold core of the lower mold assembly to separate the mold core from the molded tire curing bladder, and then adjusting the position of the lower mold assembly so that the lower mold assembly and the product move together to the bottom of the blanking assembly;

[0029] Step 5: regulating the separation. When the flow velocity value detected by the flow velocity sensor decreases, the controller controls the multiple groups of movable seats to move outwards to increase the distance. When the flow velocity value detected by the flow velocity sensor on one side decreases, the controller controls the movable tube to move to that side.

[0030] Step 6: Blanking: The blanking assembly grabs the formed tire curing bladder and then transfers the tire curing bladder to the top of the conveyor belt, thus completing the forming process of the tire curing bladder.

[0031] Technical effects and advantages of the present invention:

[0032] 1. The present invention provides an equipment body with a lower mold assembly and an upper mold assembly inside the equipment body. The lower mold assembly and the upper mold assembly cooperate to realize the molding process of the tire curing bladder. The lower mold assembly is provided with a mold core inside, and the mold core is provided with a plurality of movable seats that can be ejected outward. After the tire curing bladder is formed, the movable seats can partially eject the tire curing bladder outward to prevent the tire curing bladder from tightly fitting with the mold core and affecting demolding. By arranging a blanking assembly on the outside of the upper mold assembly, the blanking assembly can realize the grasping of the formed tire curing bladder, so as to facilitate the unloading of the tire curing bladder.

[0033] 2. The present invention provides a lower mold assembly, which includes a mold core with a hollow structure. A plurality of movable seats are provided on the outside of the mold core, and docking holes are provided inside the movable seats. An air guide cavity is provided inside the mold core. When the movable seat is pushed outward, the air guide cavity coincides with the docking hole. At this time, compressed gas can enter the movable seat through the air guide cavity and the docking hole, and then be discharged through the exhaust ports on both sides of the movable seat, so that the tire curing bladder and the mold core are completely separated under the action of gas, thereby facilitating the demolding work.

[0034] 3. The present invention provides a blanking assembly, which includes a movable tube that can slide horizontally and vertically. The bottom end of the movable tube is provided with a positioning tube with an annular structure. When grabbing the molded tire curing bladder, the positioning tube can be moved to the top of the tire curing bladder. Since the tire curing bladder is molded on the outside of the mold core, and the top of the mold core is provided with a groove with an annular structure, the top of the tire curing bladder is formed with an annular structure. When the tire curing bladder is expanded by compressed gas, the annular structure can be sleeved on the outside of the positioning tube to enable the blanking assembly to grab the tire curing bladder, and the blanking assembly can drive the tire curing bladder to move to realize the transfer and blanking of the tire curing bladder.

[0035] 4. The present invention provides a flow rate sensor and a positioning tube, and the device has high processing efficiency and good processing effect, which meets the requirements of press molding of different blanks, thereby obtaining the required tire curing bladder. At the same time, during actual processing, by adjusting the moving direction of the movable seat and exhausting the air guide cavity, the tire curing bladder, the mold core, and the movable seat can be demolded separately, with high demolding efficiency and good demolding effect. In addition, the air outlet volume and the position of the air outlet can be adaptively adjusted during the demolding process, effectively improving the demolding accuracy and demolding effect. Moreover, after demolding is completed, the tire curing bladder can be moved and unloaded, with high unloading efficiency and good unloading stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] FIG1 is a schematic diagram of the overall structure of the present invention;

[0037] FIG2 is a side view of the overall structure of the present invention;

[0038] FIG3 is a schematic diagram of the main structure of the device of the present invention;

[0039] FIG4 is a schematic structural diagram of the lower mold assembly of the present invention;

[0040] FIG5 is a schematic cross-sectional view of the lower mold assembly according to the present invention from the right side;

[0041] FIG6 is a schematic structural diagram of the lower die base of the present invention;

[0042] FIG7 is a schematic diagram of the mold core structure of the present invention;

[0043] FIG8 is a schematic diagram of the structure of the movable seat of the present invention;

[0044] FIG9 is a schematic cross-sectional view of the movable seat structure of the present invention;

[0045] FIG10 is a schematic diagram of the internal structure of the core of the present invention;

[0046] FIG11 is a schematic structural diagram of a blanking assembly according to the present invention;

[0047] FIG12 is a schematic front cross-sectional view of a blanking assembly according to the present invention;

[0048] FIG13 is a schematic structural diagram of the upper mold assembly of the present invention.

[0049] In the figure: 1. Equipment body; 2. Lower die assembly; 3. Upper die assembly; 4. Blanking assembly; 5. Conveyor belt; 101. Support frame; 102. Slide bar; 103. Upper slide seat; 104. Lower slide frame; 105. Horizontal gas rod; 106. Extension frame; 107. Slide table; 108. Slider; 109. Pressing gas rod; 201. Lower die seat; 202. Lower die cavity; 203. Discharging trough; 204. Through slot; 205. Support column; 206. Mold core; 207. Slot; 208. Movable seat; 209. Air guide cavity; 210. Docking hole; 211. Extension slot; 212 , connecting groove; 213, exhaust port; 214, power shaft; 215, double-headed screw; 216, screw sleeve; 217, articulated arm; 218, fixed seat; 219, groove; 220, strip groove; 221, air guide tube; 222, positioning seat; 223, sliding sleeve; 224, sliding column; 301, upper mold seat; 302, upper mold cavity; 303, sealing seat; 401, mounting seat; 402, support; 403, telescopic gas rod; 404, lifting gas rod; 405, movable tube; 406, positioning tube; 407, connecting tube; 408, air outlet; 409, air inlet pipe. DETAILED DESCRIPTION

[0050] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. First embodiment

[0051] The present invention provides a tire curing bladder molding device as shown in Figures 1 to 13, including an equipment body 1, a lower mold assembly 2, an upper mold assembly 3, a blanking assembly 4 and a conveyor belt 5. The blanking assembly 4 is arranged on one side of the upper mold assembly 3, and the blanking assembly 4 performs blanking. The lower mold assembly 2, the upper mold assembly 3 and the blanking assembly 4 are all arranged inside the equipment body 1. The lower mold assembly 2 and the upper mold assembly 3 cooperate to achieve press molding of the tire curing bladder. The conveyor belt 5 is arranged on one side of the equipment body 1, and the conveyor belt 5 corresponds to the blanking assembly 4. The conveyor belt 5 performs subsequent blanking and conveying. The lower mold assembly 2 and the upper mold assembly 3 are both provided with heating components to facilitate the device to heat and vulcanize the tire curing bladder blank.

[0052] The device body 1 includes a support frame 101, and a controller is provided on one side of the support frame 101. The controller electrically controls each electrical component. A slide rod 102 is provided inside the support frame 101. The two ends of the slide rod 102 are respectively provided with an upper slide 103 and a lower slide 104. The upper slide 103 and the lower slide 104 cooperate to perform pressing processing.

[0053] A horizontal gas rod 105 is provided on the top of one side of the lower slide 104, and an extension frame 106 is provided at one end of the lower slide 104, and the extension frame 106 is fixedly arranged on the top of the support frame 101. A slide 107 is provided on one side of the horizontal gas rod 105. Therefore, the controller controls the horizontal gas rod 105 to start and drive the slide 107 to slide horizontally, so as to facilitate the demolding and unloading of the device. Two groups of sliders 108 are symmetrically provided at the bottom of the slide 107, and two groups of slide grooves are symmetrically provided on the top of the lower slide 104 and the extension frame 106. The slide grooves match the sliders 108, thereby improving the sliding stability and efficiency of the slide 107.

[0054] The lower mold assembly 2 includes a lower mold base 201, which is arranged above the lower slide 104. A lower mold cavity 202 is provided in the middle of the top of the lower mold base 201, and a ring-shaped discharge trough 203 is provided at the inner top of the lower mold cavity 202. The raw materials are pressed and molded inside the lower mold cavity 202 and the discharge trough 203.

[0055] The lower mold cavity 202 is slidably connected to the mold core 206. A through groove 204 is provided in the middle of the bottom end of the lower mold cavity 202. A support column 205 is provided inside the through groove 204. The top of the support column 205 is fixedly connected to the bottom of the mold core 206. The movement of the mold core 206 improves the pressing molding effect, and the mold core 206 is set to a hollow structure. A plurality of slots 207 are provided around the outer wall of the mold core 206. A movable seat 208 is slidably provided inside the slot 207. The movable seat 208 moves along the slot 207 and improves the demolding effect.

[0056] An annular air guide cavity 209 is provided inside the mold core 206, an arc-shaped docking hole 210 is provided inside the movable seat 208, and the docking hole 210 and the air guide cavity 209 are staggered. An arc-shaped extension groove 211 is provided inside the movable seat 208, and a connecting groove 212 is provided between the extension groove 211 and the docking hole 210. Exhaust ports 213 are provided through the inner walls on both sides of the extension groove 211, and the exhaust ports 213 extend to the outer wall of the movable seat 208. The exhaust port 213 is set to an arc-shaped structure that matches the movable seat 208, so that the compressed gas ejected from the exhaust port 213 can flow along the surface of the mold core 206 to achieve the effect of assisting demolding.

[0057] In addition, a power shaft 214 is provided inside the mold core 206, and the bottom end of the power shaft 214 extends to the bottom end of the support column 205. The bottom end of the power shaft 214 can be equipped with a motor as a power source. A double-headed screw rod 215 is provided at the top of the power shaft 214, and screw rod sleeves 216 are sleeved on both ends of the double-headed screw rod 215. A plurality of articulated arms 217 are provided around the outside of the screw rod sleeve 216. One end of the articulated arm 217 is provided with a fixed seat 218 through a pin shaft, and the fixed seat 218 is fixedly arranged on the inner side of the movable seat 208. Therefore, when the motor is started, it drives the power shaft 214 to rotate, and the rotation of the power shaft 214 drives the double-headed screw rod 215 to rotate. The double-headed screw rod 215 rotates and cooperates with the screw rod sleeve 216 to drive the articulated arm 217 to rotate, thereby driving the movable seat 208 to move inside the slot 207 through the fixed seat 218.

[0058] Moreover, a ring-shaped groove 219 is provided at the top of the mold core 206, and a plurality of strip grooves 220 are provided around the inner side wall of the groove 219. The strip grooves 220 are arranged in an inclined structure. The strip grooves 220 are used to correspond to the connecting tube 407. This arrangement improves the adsorption and fixing effect of the connecting tube 407 on the tire curing bladder.

[0059] At the same time, an air guide tube 221 is provided inside the mold core 206, one end of the air guide tube 221 is connected to the docking hole 210, and the other end of the air guide tube 221 extends to the bottom end of the support column 205. When the air guide tube 221 is ventilated, the gas enters the docking hole 210 and circulates.

[0060] The top of the slide 107 is fixedly connected to the bottom of the lower mold base 201, and a positioning seat 222 is provided at the bottom end of the support column 205. The positioning seat 222 is arranged below the slide 107, and a spring is provided between the positioning seat 222 and the slide 107. Slide sleeves 223 are provided on both sides of the positioning seat 222. A slide column 224 is provided inside the slide sleeve 223, and the slide column 224 is fixedly provided at the bottom end of the slide 107. The slide column 224 cooperates with the slide sleeve 223 so that the support column 205 can slide up and down.

[0061] The upper mold assembly 3 includes an upper mold base 301, which is fixed to the middle of the bottom end of the upper slide 103 through a pressing gas rod 109. The pressing gas rod 109 is started and drives the upper slide 103 to move, and the upper slide 103 drives the upper mold base 301 to move to achieve pressing and forming. An upper mold cavity 302 is provided in the middle of the bottom end of the upper mold base 301, and a sealing seat 303 with an annular structure is provided at the bottom end of the upper mold base 301, and the sealing seat 303 corresponds to the discharge trough 203. The sealing seat 303 can extrude the annular blank so that the blank enters the mold cavity.

[0062] The blanking assembly 4 includes a mounting seat 401, which is fixedly arranged on the outer side of the upper slide 103. A support 402 is provided on one side of the mounting seat 401, and a telescopic gas rod 403 is provided between the mounting seat 401 and the support 402. A lifting gas rod 404 is provided at the bottom end of the support 402, and a movable tube 405 is provided at the bottom end of the lifting gas rod 404. A positioning tube 406 of an annular structure is provided on the outer side of the movable tube 405, and the positioning tube 406 corresponds to the groove 219. Since the tire curing bladder is formed on the outer side of the mold core 206, , and the top of the mold core 206 is provided with an annular groove 219, so the top of the tire curing bladder is formed with an annular rib, and the positioning tube 406 is pressed tightly against the inner side of the rib. When the tire curing bladder is expanded by gas, the top of the tire curing bladder deforms outward along the rib. At this time, the downward-pressed positioning tube 406 can be pressed under the rib. When the compressed gas stops being delivered, the tire curing bladder recovers its deformation under the action of its own elastic potential energy. At this time, the positioning tube 406 can be covered by the rib to achieve the purpose of grabbing the tire curing bladder.

[0063] A plurality of connecting tubes 407 are provided between the positioning tube 406 and the movable tube 405, and the connecting tubes 407 correspond to the strip grooves 220. A plurality of air outlet holes 408 are provided around the bottom end of the positioning tube 406, and the air outlet holes 408 are configured to be a conical structure with a larger inner portion and a smaller outer portion. The conical structure increases the flow rate of the gas when passing through the air outlet holes 408, thereby improving the demolding effect. An air inlet pipe 409 is provided through the outer side of the movable tube 405, and the air inlet pipe 409 can realize the injection of compressed gas.

[0064] When in use, the lower mold assembly 2 and the upper mold assembly 3 are heated by the heating mechanism inside them. The lower mold base 201 and the upper mold base 301 can be pre-installed with heating components, or heated directly by steam.

[0065] The position between the lower mold assembly 2 and the upper mold assembly 3 is adjusted so that the lower mold assembly 2 is separated from the upper mold assembly 3 , and the annular tire curing bladder blank is placed inside the lower mold assembly 2 .

[0066] The annular blank can be placed in the discharge trough 203. When the lower mold base 201 is heated, the blank in the discharge trough 203 can be heated and melted. When the controller controls the pressing air rod 109 to drive the upper mold base 301 to move downward and close the mold with the lower mold base 201, the sealing seat 303 can be inserted into the discharge trough 203. At this time, the blank can be squeezed into the upper mold cavity 302 and the lower mold cavity 202.

[0067] The positions of the lower mold assembly 2 and the upper mold assembly 3 are adjusted so that the lower mold assembly 2 and the upper mold assembly 3 complete the mold closing. During this process, the annular blank is extruded and formed under the action of the lower mold assembly 2, the upper mold assembly 3 and the mold core 206.

[0068] The mold core 206 of the lower mold assembly 2 is adjusted to separate the mold core 206 from the molded tire curing bladder, and then the position of the lower mold assembly 2 is adjusted to move the lower mold assembly 2 and the product together to the bottom of the blanking assembly 4.

[0069] After the tire curing bladder is formed, the upper mold base 301 is separated from the lower mold base 201. At this time, the downward pressure of the upper mold base 301 on the mold core 206 disappears. At this time, the mold core 206 moves upward under the action of the spring and the support column 205. At this time, the power shaft 214 drives the double-headed screw 215 to rotate, and the double-headed screw 215 drives the screw sleeve 216 to move, so that the two screw sleeves 216 move relative to each other, and the screw sleeve 216 can drive the articulated arm 217 to move during movement. The articulated arm 217 drives the movable seat 208 to move through the fixed seat 218, so that the movable seat 208 moves outward. At this time, the movable seat 208 can partially push out the tire curing bladder, and the tire curing bladder is partially separated from the mold core 206.

[0070] When the movable seat 208 moves outward, the docking hole 210 overlaps with the air guide cavity 209. At this time, the compressed gas can pass through the air guide tube 221, the air guide cavity 209, and the docking hole 210 in sequence into the extension groove 211. The compressed gas in the extension groove 211 can reach the surface of the mold core 206 through the exhaust port 213. At this time, the tire curing bladder is separated from the mold core 206 under the action of the compressed gas.

[0071] The blanking assembly 4 grabs the formed tire curing bladder and then transfers the tire curing bladder to the top of the conveyor belt 5, thus completing the forming process of the tire curing bladder.

[0072] The lower mold assembly 2 can slide horizontally to the bottom of the blanking assembly 4 under the action of the slide 107. At this time, the lifting air rod 404 drives the movable tube 405 to move downward, and the movable tube 405 drives the positioning tube 406 to move downward, so that the positioning tube 406 is pressed against the top of the tire curing bladder. At this time, compressed gas is continued to be transported toward the inside of the tire curing bladder through the air guide tube 221, so that the tire curing bladder expands under the action of the compressed gas. Since the tire curing bladder is formed on the outside of the mold core 206, and the top of the mold core 206 is provided with an annular groove 219, the top of the tire curing bladder is formed with an annular rib, and the positioning tube 406 is pressed against the inner side of the rib. When the tire curing bladder is expanded by the gas, the tire curing rubber The top of the bladder deforms outward along the convex rib, and the downward-pressed positioning tube 406 can be pressed under the convex rib. When the compressed gas stops being delivered, the tire curing bladder recovers its deformation under the action of its own elastic potential energy. At this time, the positioning tube 406 can be covered by the convex rib to achieve the capture of the tire curing bladder. When the tire curing bladder follows the positioning tube 406 to move to the upper method of the conveyor belt 5, compressed gas is injected into the movable tube 405 through the air inlet pipe 409. The compressed gas can enter the positioning tube 406 through the movable tube 405 and the connecting tube 407, and then be discharged through the air outlet 408. At this time, the top of the tire curing bladder is separated from the positioning tube 406 under the action of the compressed gas, and the tire curing bladder can be released. Second embodiment

[0073] After the tire curing bladder is pressed and formed, it needs to be demolded, but the above processes lack the demolding function for the outer wall of the movable seat 208, thereby reducing the demolding efficiency and demolding effect of the tire curing bladder; and the above processes lack the cleaning function for the outer wall of the mold core 206 and the outer wall of the movable seat 208, which is easy to affect the subsequent pressing and forming; and when the tire curing bladder in some positions is difficult to demold due to excessive viscosity during processing, the above processes lack the function of fixed-point adjustment of the demolding efficiency of the tire curing bladder, thereby reducing the demolding effect; when the tire curing bladder needs to be unloaded after demolding, the process has a poor gripping effect on the tire curing bladder when only the positioning tube 406 is connected to the rib on the top of the tire curing bladder. When the tire curing bladder slides with the mold core 206 or the movable seat 208 to unload, it is easy to fall off the positioning tube 406, thereby reducing the unloading effect.

[0074] In order to solve the above problems, the tire curing bladder molding equipment further includes: a flow rate sensor is provided inside the air guide cavity 209, and the flow rate sensor is used to detect the gas flow rate value inside the air guide cavity 209. Therefore, the degree of demolding of the tire curing bladder and the outer wall of the mold core 206 or the movable seat 208 is obtained according to the flow rate value, and the vertex auxiliary demolding is adjusted accordingly.

[0075] The other end of the air guide pipe 221 is connected to the air inlet pipe 409 through an air pump. Therefore, when the air pump is started, the air guide pipe 221 and the air inlet pipe 409 are connected to each other, thereby cooperating to achieve fixed-point demoulding and separation.

[0076] During use, as can be seen from the first embodiment, the blank is placed inside the discharge trough 203, the controller controls the pressing air rod 109 to start and drive the upper slide 103 at the bottom to move downward, the upper slide 103 moves downward and drives the upper mold base 301 to move downward to the top of the lower mold base 201, the sealing seat 303 matches the discharge trough 203 and seals it, and at the same time, the blank inside the discharge trough 203 is subjected to high-temperature processing to be pressed to form the required tire vulcanization bladder.

[0077] After the pressing process is completed, the controller controls the pressing gas rod 109 to move in the opposite direction and return to its original position. Then the controller controls the horizontal gas rod 105 to start and drive the slide 107 to move along the lower slide frame 104 to the top of the extension frame 106 and to the bottom of the movable tube 405. At this time, the controller controls the motor to start and drive the power shaft 214 to rotate forward. The power shaft 214 drives the double-headed screw rod 215 to rotate forward. The double-headed screw rod 215 drives the articulated arm 217 to rotate through the threaded cooperation with the screw rod sleeve 216. The articulated arm 217 drives the movable seat 208 to move inward along the slot 207 through the cooperation with the fixed seat 218. The movable seat 208 moves At the same time, the movable seat 208 is synchronously separated from the tire vulcanized rubber, and the controller controls the air pump to start exhausting. The external gas enters the movable tube 405 along the air outlet 408, and enters the air guide pipe 221 along the air inlet pipe 409, and finally exhausts the inside of the air guide cavity 209 along the air guide pipe 221. As the movable seat 208 moves, the intersection area of ​​the side wall of the movable seat 208 and the air guide cavity 209 increases, and the gas flow rate discharged from the air guide cavity 209 to the outer surface of the movable seat 208 increases, and the flow rate value detected by the flow rate sensor increases. With the help of the gas flow rate, the demoulding effect of the tire vulcanization bladder and the outer wall of the movable seat 208 is effectively improved.

[0078] At the same time, with the help of the work of the air pump, the air outlet 408 applies a suction force, and with the help of the suction force, the outer surface of the tire curing bladder can be suctioned, and then the demoulding efficiency of the tire curing bladder and the outer wall of the movable seat 208 can be improved in cooperation with the internal air pressure. At the same time, when the demoulding efficiency of the tire curing bladder and the outer wall of the movable seat 208 is reduced, it means that the tire curing bladder and the outer walls of the multiple groups of movable seats 208 are still partially adhered, and the flow rate of the gas discharged along the air guide cavity 209 is hindered. At this time, the flow rate values ​​detected by the multiple groups of flow rate sensors are all less than the set flow rate preset values, and the controller controls the motor to increase the forward rotation angle, and the valve The distance that the movable seat 208 moves inward due to the power shaft 214 increases, and the offset area of ​​the movable seat 208 to the air guide cavity 209 further increases, and the amount of gas discharged along the air guide cavity 209 increases, thereby effectively improving the demolding efficiency of the tire curing bladder and the outer wall of the movable seat 208 with the help of the gas. When the flow rate of the gas discharged from the air guide cavity 209 increases, the suction force applied by the air pump to the air outlet 408 increases, and the corresponding suction force applied by the air outlet 408 to the outer surface of the tire curing bladder increases, thereby effectively improving the demolding efficiency of the tire curing bladder. The various structures cooperate with each other, and the operation is simple and efficient.

[0079] At the same time, when the tire curing bladder on a certain side fits with the inner wall of the movable seat 208 and cannot be demolded, the flow rate value detected by the flow rate sensor on this side is less than the set flow rate preset value, while the flow rate values ​​detected by the other multiple groups of flow rate sensors are equal to the set flow rate preset value. This process shows that the tire curing bladder on this side is adhered to the outer wall of the movable seat 208, and the controller controls the telescopic air rod 403 and the horizontal air rod 105 to work together respectively, and then adjust the position of the movable tube 405, so that the position of the movable tube 405 moves from the axial position of the mold core 206 to the position where the flow rate sensor detects that the flow rate value is less than the set flow rate preset value. Correspondingly, the suction force applied to the outer surface of the tire curing bladder on this side is increased by means of the air outlet 408, and the demolding effect of the tire curing bladder on this side is improved with the action of the internal gas, and the adaptability is stronger and the vertex demolding effect is better.

[0080] When the flow rate values ​​detected by multiple groups of flow rate sensors all reach the set flow rate sensors, it means that the demoulding of the movable seat 208 and the tire curing bladder is completed, and the excess gas is discharged along the bottom. At this time, the controller controls the motor to reverse, and the motor drives the power shaft 214 to reverse, and the power shaft 214 drives the double-headed screw 215 to reverse, and the double-headed screw 215 drives the articulated arm 217 to rotate in the opposite direction through the screw sleeve 216. The articulated arm 217 drives the movable seat 208 to move outward along the slot 207 through the fixed seat 218. At this time, the movable seat 208 drives the tire curing bladder and the mold core 206 to separate from each other, thereby effectively realizing the complete and efficient demoulding separation of the tire curing bladder, the mold core 206 and the movable seat 208.

[0081] At the same time, the controller continues to control the air pump to start and ventilate the air guide pipe 221 and the air guide cavity 209. Since the intersection area of ​​the air guide cavity 209 and the docking hole 210 increases at this time, the gas inside the air guide cavity 209 enters the docking hole 210, and the gas inside the docking hole 210 reaches the exhaust port 213 along the extension groove 211 and the connecting groove 212, and is ejected to both sides along the exhaust port 213. With the help of the gas, the demolding of the tire curing bladder and the outer surface of the mold core 206 is effectively improved, and multiple groups of flow rate sensors detect the flow rate value. At the same time, the air outlet 408 continues to apply suction force to the outer surface of the tire curing bladder, effectively improving the separation efficiency of the tire curing bladder and the outer surface of the mold core 206.

[0082] As can be seen from the above, when the flow rate value detected by the multiple groups of flow rate sensors is less than the set flow rate sensor, the controller controls the motor to continue to reverse, and the distance that the movable seat 208 moves outward continues to increase, then the intersection area of ​​the air guide cavity 209 and the docking hole 210 is further increased, the amount of gas entering the docking hole 210 along the air guide cavity 209 increases, and the corresponding amount of gas discharged along the exhaust port 213 increases, the impact force exerted by the gas on the tire curing bladder increases, and effectively improves the demolding efficiency of the tire curing bladder and the outer surface of the mold core 206; and when the flow rate value detected by the flow rate sensor on one side is less than the set flow rate value, the controller controls the horizontal gas rod 105 and the telescopic gas rod 403 to work together and adjust the position of the movable tube 405, so that the movable tube 405 moves to the top of the side, and cooperates with the suction force applied by the air outlet 408 to perform fixed-point suction demolding on the position, thereby improving the demolding efficiency and ensuring the demolding effect.

[0083] When the flow rate values ​​detected by the multiple groups of flow rate sensors all reach the set flow rate preset values, it means that the tire curing bladder is now demolded from the mold core 206 and the movable seat 208, and the subsequent unloading process is required. At this time, the controller controls the lifting air rod 404 to start and drive the movable tube 405 to move downward. When the movable tube 405 moves downward to the maximum distance, the positioning tube 406 contacts the top of the tire curing bladder. At this time, the air pump starts to pump air, and the air outlet 408 is sucked into the negative pressure at the top of the tire curing bladder under the action of the suction force, and the exhaust port 213 ventilates the inside of the tire curing bladder, the volume of the tire curing bladder increases, and the positioning tube 406 and the wheel The ribs on the top of the tire curing bladder are staggered with each other, which effectively improves the adsorption and fixing effect of the positioning tube 406 and the tire curing bladder. Then, the controller controls the motor to rotate forward and drives the movable seat 208 to move reversely and insert it into the slot 207. The air guide cavity 209 is completely staggered with the docking hole 210. The gas inside the air guide cavity 209 is blocked and cannot be discharged. The flow rate value detected by the flow rate sensor is zero. At this time, the gas inside the tire curing bladder is discharged along the bottom, and the tire curing bladder retracts inward under the action of its own elasticity. The ribs on the top of the tire curing bladder and the positioning tube 406 are clamped and fixed to each other, and the positioning tube 406 and the tire curing bladder are completely negative pressure adsorbed and hung.

[0084] Then the controller controls the lifting air rod 404 to move upward and drive the tire curing bladder to move upward and separate from the mold core 206. After separation, the telescopic air rod 403 starts and drives the tire curing bladder to move to the top of the conveyor belt 5. At the same time, the controller controls the motor to reverse, and the movable seat 208 extends along the slot 207. The controller controls the air pump to start in the reverse direction, and the external gas enters the exhaust port 213 and enters the air intake pipe 409 along the connecting groove 212, the extension groove 211, the docking hole 210, the air guide cavity 209, and the air guide pipe 221, and finally enters the air intake pipe 409, the movable pipe 405, and the connecting pipe 407. The gas discharged from the air outlet 408 enters the top of the tire curing bladder, and the top of the tire curing bladder is expanded by the air pressure and separated from the positioning tube 406. Then the controller controls the lifting air rod 404 and the telescopic air rod 403 to start in the reverse direction and drive the movable tube 405 to move in the reverse direction to restore to its original position, thereby completing the demoulding and unloading process of the tire curing bladder. At this time, with the help of the exhaust port 213, suction force is applied to the outside world, which can effectively improve the suction cleaning effect of the outer surface of the mold core 206 and the movable seat 208, thereby ensuring the cleanliness and stability of the mold core 206 and the movable seat 208.

[0085] After the tire curing bladder has been pressed and molded and released from the mold, it moves to the rear end on the top of the conveyor belt 5 to unload the material, and the above process is repeated to press and mold subsequent blanks.

[0086] The device has high processing efficiency and good processing effect, and meets the requirements of press molding of different blanks, thereby obtaining the required tire curing bladder. At the same time, during actual processing, the tire curing bladder is demoulded from the mold core 206 and the movable seat 208 by adjusting the moving direction of the movable seat 208 and exhausting the air guide cavity 209. The demoulding efficiency is high and the demoulding effect is good. In addition, the air outlet volume and the position of the air outlet hole 408 can be adaptively adjusted during the demoulding process, effectively improving the demoulding accuracy and demoulding effect. Moreover, after the demoulding is completed, the tire curing bladder can be unloaded by movement, with high unloading efficiency and good unloading stability. Third embodiment

[0087] A molding method for a tire curing bladder molding device, wherein the molding method utilizes a tire curing bladder molding device to press and mold a tire curing bladder, comprising the following steps:

[0088] Step 1: Preheating: heating the lower mold assembly 2 and the upper mold assembly 3 through the heating mechanism inside the lower mold assembly 2 and the upper mold assembly 3.

[0089] Step 2: Discharging the material: adjusting the position between the lower mold assembly 2 and the upper mold assembly 3 so that the lower mold assembly 2 and the upper mold assembly 3 are separated, and placing the annular tire curing bladder blank inside the lower mold assembly 2.

[0090] Step 3: Vulcanization molding. Adjust the positions of the lower mold assembly 2 and the upper mold assembly 3 so that the lower mold assembly 2 and the upper mold assembly 3 are completely closed. During this process, the annular blank is extruded and molded under the action of the lower mold assembly 2, the upper mold assembly 3 and the mold core 206.

[0091] Step 4: Product separation: The mold core 206 of the lower mold assembly 2 is adjusted to separate the mold core 206 from the molded tire curing bladder, and then the position of the lower mold assembly 2 is adjusted to move the lower mold assembly 2 and the product together to the bottom of the blanking assembly 4.

[0092] Step 5: Adjust the separation. When the flow rate value detected by the flow rate sensor decreases, the controller controls the multiple groups of movable seats 208 to move outward to increase the distance. When the flow rate value detected by the flow rate sensor on one side decreases, the controller controls the movable tube 405 to move to that side.

[0093] Step 6: Blanking: The blanking assembly 4 grabs the formed tire curing bladder and then transfers the tire curing bladder to the top of the conveyor belt 5, thus completing the forming process of the tire curing bladder.

[0094] By further limiting the tire curing bladder molding method, the compression molding efficiency of the tire curing bladder is effectively improved, and the demoulding effect between the tire curing bladder and the outer wall of the mold core 206 or the movable seat 208 can be adaptively adjusted, and fixed-point demoulding can be achieved, resulting in higher demoulding efficiency and better demoulding effect. After demoulding is completed, the tire curing bladder can be grabbed and unloaded with the help of the positioning tube 406, which has higher stability and simpler operation.

[0095] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A tire curing bladder molding device, characterized in that: It includes an equipment body, a lower mold assembly, an upper mold assembly, a blanking assembly and a conveyor belt; The device body comprises a support frame, a controller is arranged on one side of the support frame, a slide bar is arranged inside the support frame, and an upper slide seat and a lower slide frame are arranged at both ends of the slide bar; The lower mold assembly comprises a lower mold base, a lower mold cavity is provided at the middle of the top of the lower mold base, a material discharge groove is provided at the top of the lower mold cavity, a mold core is slidably connected to the inside of the lower mold cavity, a plurality of slots are arranged around the outer wall of the mold core, a movable seat is slidably arranged inside the slot, an air guide cavity is provided inside the mold core, a flow velocity sensor is provided inside the air guide cavity, a docking hole is provided inside the movable seat, an air guide pipe is provided inside the mold core, and one end of the air guide pipe is connected to the air guide cavity; The docking holes and the air guide cavities are arranged in a staggered manner, an arc-shaped extension groove is provided inside the movable seat, a connecting groove is provided between the extension groove and the docking hole, exhaust ports are penetrated through the inner walls on both sides of the extension groove, and the exhaust ports extend to the outer wall of the movable seat; A power shaft is provided inside the mold core, the bottom end of the power shaft extends to the bottom end of the support column, a double-headed screw is provided at the top end of the power shaft, both ends of the double-headed screw are sleeved with screw sleeves, a plurality of hinged arms are arranged around the outside of the screw sleeve, one end of the hinged arm is movably provided with a fixed seat through a pin shaft, and the fixed seat is fixedly arranged on the inner side of the movable seat; The upper die assembly comprises an upper die seat, which is fixedly arranged at the middle of the bottom end of the upper slide seat by a pressed gas rod, an upper die cavity is arranged at the middle of the bottom end of the upper die seat, and a sealing seat of an annular structure is arranged at the bottom end of the upper die seat, and the sealing seat corresponds to the discharge groove; The material unloading assembly includes a mounting seat, a support is provided on one side of the mounting seat, a lifting gas rod is provided at the bottom end of the support, a movable tube is provided at the bottom end of the lifting gas rod, a positioning tube with an annular structure is provided on the outer side of the movable tube, an air intake pipe is penetrated through the outer side of the movable tube, and the other end of the air guide pipe is connected with the air intake pipe through an air pump; a telescopic gas rod is provided between the mounting seat and the support, a plurality of connecting tubes are provided between the positioning tube and the movable tube, the connecting tubes correspond to the strip grooves, a plurality of air outlet holes are provided around the bottom end of the positioning tube, and the air outlet holes are arranged in a conical structure with a larger inner side and a smaller outer side.

2. A tire curing bladder molding equipment according to claim 1, characterized in that: The blanking assembly is arranged on one side of the upper mold assembly, the lower mold assembly, the upper mold assembly and the blanking assembly are all arranged inside the equipment body, the conveyor belt is arranged on one side of the equipment body, the conveyor belt corresponds to the blanking assembly, the controller electrically controls each electrical component, and the flow rate sensor is used to detect the gas flow rate value inside the air guide cavity.

3. A tire curing bladder molding equipment according to claim 1, characterized in that: A horizontal gas rod is provided on the top of one side of the lower slide frame, an extension frame is provided at one end of the lower slide frame, and the extension frame is fixedly arranged on the top of the support frame, a slide table is provided on one side of the horizontal gas rod, the top of the slide table is fixedly connected to the bottom of the lower mold base, two groups of sliders are symmetrically provided at the bottom of the slide table, and two groups of slide grooves are symmetrically provided on the tops of the lower slide frame and the extension frame, and the slide grooves match the sliders.

4. A tire curing bladder molding device according to claim 3, characterized in that: A through groove is penetrated in the middle of the bottom end of the lower mold cavity, a support column is penetrated inside the through groove, the top end of the support column is fixedly connected to the bottom of the mold core, the other end of the air guide tube extends to the bottom end of the support column, and the mold core is set to be a hollow structure.

5. A tire curing bladder molding device according to claim 4, characterized in that: A positioning seat is provided at the bottom end of the support column, and the positioning seat is arranged below the slide, and a spring is provided between the positioning seat and the slide, and sliding sleeves are provided on both sides of the positioning seat, and a sliding column is penetrated inside the sliding sleeve, and the sliding column is fixedly arranged at the bottom end of the slide.

6. A tire curing bladder molding device according to claim 1, characterized in that: The top of the mold core is provided with a groove of an annular structure, the inner side wall of the groove is surrounded by a plurality of strip grooves, the strip grooves are arranged as an inclined structure, the positioning tube corresponds to the groove, and the mounting seat is fixedly arranged on the outer side of the upper slide seat.

7. A molding method of a tire curing bladder molding device, wherein the molding method uses the tire curing bladder molding device according to claim 1 to press and mold the tire curing bladder, characterized in that: The following steps are involved: Step 1: preheating, heating the lower mold assembly and the upper mold assembly by means of a heating mechanism inside the lower mold assembly; Step 2: discharging the material, adjusting the position between the lower mold assembly and the upper mold assembly so that the lower mold assembly is separated from the upper mold assembly, and placing the annular tire curing bladder blank inside the lower mold assembly; Step 3: vulcanization molding, adjusting the positions of the lower mold assembly and the upper mold assembly so that the lower mold assembly and the upper mold assembly complete the mold closing. During this process, the annular blank is extruded and molded under the action of the lower mold assembly, the upper mold assembly and the mold core; Step 4: separating the product by adjusting the mold core of the lower mold assembly so that the mold core is separated from the molded tire curing bladder, and then adjusting the position of the lower mold assembly so that the lower mold assembly and the product move together to the bottom of the blanking assembly; Step 5: regulating separation. When the flow velocity value detected by the flow velocity sensor decreases, the controller controls the multiple groups of movable seats to move outward to increase the distance. When the flow velocity value detected by the flow velocity sensor on one side decreases, the controller controls the movable tube to move to that side. Step six, unloading, the unloading assembly grabs the formed tire curing bladder, and then transfers the tire curing bladder to the top of the conveyor belt, thus completing the forming process of the tire curing bladder.

Images