Mold Heating Structure, Vulcanizer and Method for Replacing Vulcanizer Mold

Abstract

The present invention provides a mold heating structure, a vulcanizing machine and a method for replacing the mold of the vulcanizing machine. The mold heating structure is used to heat the mold in the vulcanizing chamber. The mold heating structure includes: an intake pipe and an exhaust pipe, the intake pipe and / or the exhaust pipe are arranged at the top of the vulcanizing chamber and are respectively connected to the mold in the vulcanizing chamber, so as to heat the mold by introducing a gas at a preset temperature into the heating cavity of the mold; a first sealing assembly, the first sealing assembly is arranged between the intake pipe and the vulcanizing chamber; a second sealing assembly, the second sealing assembly is arranged between the exhaust pipe and the vulcanizing chamber. The mold heating structure of the present invention solves the problems in the prior art that the installation die sleeve inlet and return pipes must be replaced during mold replacement and air leakage in the vulcanizing chamber, and improves the mold replacement efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of rubber product manufacturing, and more particularly, to a mold heating structure, a vulcanizer, and a method for replacing the mold of a vulcanizer. Background Art

[0002] When the existing vulcanizer vulcanizes the green tire of a tire, it will generate soot, waste gas, and steam. These flue gases and waste gases leak to the outside of the vulcanization chamber, causing the vulcanization workshop to be filled with strange smells. Moreover, after the steam escapes, it will increase the temperature in the workshop, making the working environment in the vulcanization workshop even worse.

[0003] Regarding the above problems, an air extraction device is provided in the existing technology on the vulcanizer to uniformly suck away these flue gases by the suction device before the cover of the tire vulcanization is opened for centralized treatment. However, the vulcanization chamber of the traditional vulcanizer is not tightly sealed and there is no air extraction device, and the flue gases generated during the vulcanization process will leak from the gaps in the vulcanization chamber to the outside of the vulcanization chamber, affecting the workshop environment.

[0004] In addition, different molds are required for processing different models of tires. Since the structural parameters such as the height and diameter of different molds are different, if the mold is replaced, the heating structure on the existing vulcanizer cannot be matched with the replaced mold, and the steam inlet and return pipes of the mold sleeve need to be disassembled and assembled each time. Therefore, the existing vulcanizer cannot meet the production of several different specifications of tires, has a relatively single function, and poor versatility. Summary of the Invention

[0005] The main object of the present invention is to provide a mold heating structure, a vulcanizer, and a method for replacing the mold of a vulcanizer to solve the problem of air leakage of the vulcanizer in the existing technology.

[0006] To achieve the above object, according to one aspect of the present invention, a mold heating structure is provided for heating the mold in the vulcanization chamber. The mold heating structure includes: a first intake pipe and a first outlet pipe, the first intake pipe and / or the first outlet pipe are arranged on the top of the vulcanization chamber and are respectively connected to the mold in the vulcanization chamber to heat the mold by introducing a gas at a preset temperature into the heating cavity of the mold; a first sealing assembly, the first sealing assembly is arranged between the first intake pipe and the vulcanization chamber, and / or between the first outlet pipe and the vulcanization chamber.

[0007] Further, the first sealing assembly includes: a first sealing ring, the first sealing ring is sleeved on the first intake pipe or arranged in the first heating port of the vulcanization chamber, and the first intake pipe is connected to the first heating port through the first sealing ring, and / or a third sealing ring, the third sealing ring is arranged on the first outlet pipe or arranged in the first heat dissipation port of the vulcanization chamber, and the first outlet pipe is connected to the first heat dissipation port through the third sealing ring.

[0008] Further, a first mounting groove is provided on the outer wall surface of the first intake pipe, and the first sealing ring is arranged in the first mounting groove. At least a part of the first sealing ring is located outside the first mounting groove; a third mounting groove is provided on the outer wall surface of the first exhaust pipe, and the third sealing ring is arranged in the third mounting groove of the first intake pipe. At least a part of the third sealing ring is located outside the third mounting groove.

[0009] Further, the mold heating structure further includes: a second intake pipe and a second exhaust pipe. The second intake pipe and / or the second exhaust pipe are arranged on the circumferential side surface of the vulcanization chamber and are respectively connected to the mold in the vulcanization chamber, so as to heat the mold by introducing a gas at a preset temperature into the heating cavity of the mold; a second sealing assembly is arranged between the second intake pipe and the vulcanization chamber, and / or between the second exhaust pipe and the vulcanization chamber.

[0010] Further, the second sealing assembly includes: a second sealing ring, the second sealing ring is sleeved on the second intake pipe or arranged in the second heating port of the vulcanization chamber, and the second intake pipe is connected to the second heating port through the second sealing ring, and / or a fourth sealing ring, the fourth sealing ring is arranged on the second exhaust pipe or arranged in the second heat dissipation port of the vulcanization chamber, and the second exhaust pipe is connected to the second heat dissipation port through the fourth sealing ring.

[0011] Further, a second mounting groove is provided on the outer wall surface of the second intake pipe, and the second sealing ring is arranged in the second mounting groove. At least a part of the second sealing ring is located outside the second mounting groove; a fourth mounting groove is provided on the outer wall surface of the second exhaust pipe, and the fourth sealing ring is arranged in the fourth mounting groove. At least a part of the fourth sealing ring is located outside the fourth mounting groove.

[0012] Further, the mold heating structure further includes: a third sealing assembly arranged on the first intake pipe and / or between the first exhaust pipe and the mold; a fourth sealing assembly arranged between the second intake pipe and / or the second exhaust pipe and the mold.

[0013] According to a second aspect of the present invention, a vulcanizer includes a vulcanization chamber and a mold. The mold is arranged in the vulcanization chamber to shape a tire. The vulcanizer further includes a mold heating structure. The mold heating mechanism is arranged on the top of the vulcanization chamber to heat the mold, and the mold heating structure is the above-mentioned mold heating structure.

[0014] Further, the vulcanization chamber includes a top plate and side walls. The top plate is disposed at the top of the side walls and encloses a vulcanization cavity with the side walls. Among them, a first heating port and a first heat dissipation port are provided on the top plate. The first intake pipe of the mold heating structure passes through the first heating port and is connected to the mold, and the first exhaust pipe of the mold heating structure passes through the first heat dissipation port and is connected to the mold; a second heating port and a second heat dissipation port are provided on the side walls. The second intake pipe of the mold heating structure passes through the second heating port and is connected to the mold, and the second exhaust pipe of the mold heating structure passes through the second heat dissipation port and is connected to the mold.

[0015] Further, the mold includes a first mold body and a second mold body. The vulcanizer further includes: a driving oil cylinder, which is drivingly connected to the first mold body. Among them, the second mold body is fixed in the vulcanization chamber, and the driving oil cylinder drives the first mold body to approach or move away from the second mold body; a heating cavity is provided on the side plate of the first mold body and surrounds the side plate and is connected end to end to form a sealed annular cavity.

[0016] According to the third aspect of the present invention, a method for replacing a mold of a vulcanizer is used to install the mold into the above-mentioned vulcanizer. Among them, the mold is provided with a first heating port and a first heat dissipation port. The method for replacing the mold of the vulcanizer includes:

[0017] Step S1: Set the first heating port of the mold corresponding to the position of the first intake pipe of the mold heating structure in the vulcanizer, and set the first heat dissipation port of the mold corresponding to the position of the first exhaust pipe of the mold heating structure in the vulcanizer;

[0018] Step S2: Connect the mold to the driving oil cylinder in the vulcanizer.

[0019] The mold heating structure applying the technical solution of the present invention is mainly used for heating a tire vulcanization mold so that the tire is softened at a high temperature in the mold. When heating the mold, high-temperature steam is used as the heat source. Specifically, the mold is arranged in a vulcanization chamber, and a first air inlet pipe and a first air outlet pipe are arranged on the top plate of the vulcanization chamber and respectively pass through the vulcanization chamber to be connected with the mold. In order to prevent gas leakage during the vulcanization process of the tire, a first sealing assembly is arranged between the first air inlet pipe and the vulcanization chamber and between the first air outlet pipe and the vulcanization chamber to prevent gas from escaping through the gap between the first air inlet pipe and the vulcanization chamber or the gap between the first air outlet pipe and the vulcanization chamber, solving the problem of air leakage in the vulcanization chamber. In addition, in order to make full use of the vulcanizer and enable the vulcanizer to process tires of different models, the vulcanizer is modified to adapt to the molds suitable for tires of different models. However, changing the mold poses new challenges to the existing vulcanization chamber. Since the positions of the heating air inlet and air outlet of different molds are at different heights, the existing heating structure on the vulcanization chamber cannot be docked with molds of different models. In order to solve the above problems in this application, the first air inlet pipe and the first air outlet pipe are arranged above the vulcanization chamber and close to the center of the vulcanization chamber. Specifically, the distances from the first air inlet pipe and the first air outlet pipe to the center of the vulcanization chamber are less than the radius of the tire with the smallest size. In this way, even the mold of the smallest tire can be provided with a communication port at the corresponding positions of the first air inlet pipe and the first air outlet pipe to be connected with the first air inlet pipe and the first air outlet pipe, solving the problem that the changed mold cannot be matched with the mold heating structure of the vulcanization chamber and improving the mold changing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0021] Figure 1 The structural schematic diagram of an embodiment of a vulcanizer according to the present invention is shown.

[0022] Among them, the above accompanying drawings include the following reference numerals:

[0023] 10, vulcanization chamber; 11, first heating port; 12, second heat dissipation port; 13, top plate; 14, side wall; 20, first air inlet pipe; 21, first air outlet pipe; 30, second air inlet pipe; 31, second air outlet pipe; 40, second sealing assembly; 50, third sealing assembly; 60, first mold body; 70, driving oil cylinder; 80, first sealing assembly. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0025] In order to solve the problem of air leakage in the vulcanizer in the prior art, the present invention provides a mold heating structure, a vulcanizer and a method for replacing the mold of the vulcanizer.

[0026] Please refer to Figure 1 , a mold heating structure for heating the mold in the vulcanization chamber 10. The mold heating structure includes: a first intake pipe 20, a first outlet pipe 21 and a first sealing assembly 80. The first intake pipe 20 and / or the first outlet pipe 21 are arranged on the top of the vulcanization chamber 10 and are respectively connected to the mold in the vulcanization chamber 10, so as to heat the mold by introducing a gas at a preset temperature into the heating cavity of the mold; the first sealing assembly is arranged between the first intake pipe 20 and the vulcanization chamber 10, and / or between the first outlet pipe 21 and the vulcanization chamber 10.

[0027] The mold heating structure provided by the present invention is mainly used for heating the tire vulcanization mold, so that the tire is softened at a high temperature in the mold. When heating the mold, high-temperature steam is used as the heat source. Specifically, the mold is arranged in the vulcanization chamber 10, and the first intake pipe 20 and the first outlet pipe 21 are arranged on the top plate of the vulcanization chamber and respectively pass through the vulcanization chamber 10 to be connected to the mold. In order to prevent gas leakage during the vulcanization process of the tire, a first sealing assembly 80 is arranged between the first intake pipe 20 and the vulcanization chamber 10 and between the first outlet pipe 21 and the vulcanization chamber, so as to prevent gas from escaping from the gap between the first intake pipe 20 and the vulcanization chamber 10 or the gap between the first outlet pipe 21 and the vulcanization chamber 10, and solve the problem of air leakage in the vulcanization chamber.

[0028] In addition, in order to make full use of the vulcanizer and enable the vulcanizer to process tires of different models, the vulcanizer is modified to be able to adapt to the molds suitable for tires of different models. However, changing the mold poses a new challenge to the existing vulcanization chamber 10. Since the positions of the heating air inlet and outlet of different molds are different in height, the heating structure on the existing vulcanization chamber 10 cannot be docked with molds of different models. In order to solve the above problems, the first intake pipe 20 and the first outlet pipe 21 are arranged above the vulcanization chamber 10 and close to the center of the vulcanization chamber 10. Specifically, the distances from the first intake pipe 20 and the first outlet pipe 21 to the center of the vulcanization chamber 10 are less than the radius of the smallest-sized tire. In this way, even the mold of the smallest tire can be provided with a communication port at the corresponding positions of the first intake pipe 20 and the first outlet pipe 21 to be connected to the first intake pipe 20 and the first outlet pipe 21, solving the problem that the changed mold cannot be matched with the mold heating structure of the vulcanization chamber 10 and improving the mold change efficiency.

[0029] The first sealing assembly includes: a first sealing ring, the first sealing ring is sleeved on the first intake pipe 20 or disposed in the first heating port 11 of the vulcanizing chamber 10, the first intake pipe 20 is connected to the first heating port 11 through the first sealing ring, and / or a third sealing ring, the third sealing ring is disposed on the first exhaust pipe 21 or disposed in the first heat dissipation port of the vulcanizing chamber 10, the first exhaust pipe 21 is connected to the first heat dissipation port through the third sealing ring. A first mounting groove is provided on the outer wall surface of the first intake pipe 20 and / or the first exhaust pipe 21, the first sealing ring is disposed in the first mounting groove, wherein at least a part of the first sealing ring is located outside the first mounting groove; a third mounting groove is provided on the outer wall surface of the first exhaust pipe 21, the third sealing ring is disposed in the third mounting groove of the first intake pipe 20, wherein at least a part of the third sealing ring is located outside the third mounting groove.

[0030] As Figure 1 shown, in this embodiment, in order to prevent gas from leaking between the first intake pipe 20 of the mold heating structure and the vulcanizing chamber 10, a first sealing ring is sleeved outside the first intake pipe 20 to seal and connect between the first intake pipe 20 and the first heating port 11. To facilitate the fixing of the first sealing ring, a first mounting groove is provided outside the first intake pipe 20. The first mounting groove is a groove provided around the first intake pipe 20 in a circle. The first sealing ring is installed in the groove and part of it is exposed outside the groove; the structure between the first exhaust pipe 21 and the first heat dissipation port is similar to that between the first intake pipe and the first heating port.

[0031] In addition, both the first mounting groove and the first sealing ring can be provided in multiple numbers and are provided in one-to-one correspondence to enhance the sealing effect.

[0032] When the wall thickness of the first intake pipe 20 is relatively thin, the first sealing ring can also be disposed on the inner wall of the first heating port 11. Specifically, a groove is provided on the inner wall of the first heating port 11 for installing the first sealing ring.

[0033] The mold heating structure further includes: a second intake pipe 30 and a second exhaust pipe 31. The second intake pipe 30 and / or the second exhaust pipe 31 are arranged on the circumferential side surface of the vulcanization chamber 10 and are respectively connected to the mold in the vulcanization chamber 10, so as to heat the mold by introducing gas at a preset temperature into the heating cavity of the mold; a second sealing assembly 40, which is arranged between the second intake pipe 30 and the vulcanization chamber 10, and / or between the second exhaust pipe 31 and the vulcanization chamber 10. The second sealing assembly 40 includes: a second sealing ring, the second sealing ring is sleeved on the second intake pipe 30 or arranged in the second heating port of the vulcanization chamber 10, and the second intake pipe 30 is connected to the second heating port through the second sealing ring, and / or a fourth sealing ring, the fourth sealing ring is arranged on the second exhaust pipe 31 or arranged in the second heat dissipation port 12 of the vulcanization chamber 10, and the second exhaust pipe 31 is connected to the second heat dissipation port 12 through the fourth sealing ring.

[0034] As Figure 1 shown, in this embodiment, there are two sets of intake and exhaust pipelines in the vulcanization chamber. One set is located above, and the other set is on the side wall of the vulcanization chamber, that is, on the side wall of the vulcanization chamber. This set of intake and exhaust pipelines includes a second intake pipe and a second exhaust pipe. The second intake pipe is arranged at the second heating port, and the second exhaust pipe is arranged at the second heat dissipation port. The second intake pipe and the second heating port, as well as the second exhaust pipe and the second heat dissipation port, are respectively sealed by sealing rings to ensure no air leakage.

[0035] The mold heating structure further includes: a third sealing assembly 50, the third sealing assembly 50 is arranged on the first intake pipe 20 and / or between the first exhaust pipe 21 and the mold, and a fourth sealing assembly, the fourth sealing assembly is arranged between the second intake pipe 30 and / or the second exhaust pipe 31 and the mold.

[0036] In the above embodiment, the sealing connection solutions between the first intake pipe 20, the first exhaust pipe 21, the second intake pipe 30 and the second exhaust pipe 31 and the vulcanization chamber 10 are given. Further, the first intake pipe 20, the first exhaust pipe 21, the second intake pipe 30 and the second exhaust pipe 31 of the mold heating structure in this embodiment are also connected to the mold. In order to make the mold have a good effect on high-temperature pressurization of the tire and ensure the vacuum environment after air extraction in the mold, a third sealing assembly 50 is also arranged between the first intake pipe 20, the first exhaust pipe 21, the second intake pipe 30 and the second exhaust pipe 31 and the mold for sealing. Specifically, the third sealing assembly 50 includes a plurality of sealing rings, and the plurality of sealing rings are respectively located between the above pipelines and the mold to ensure the sealing effect of the mold.

[0037] The present invention also provides a vulcanizer, which includes a vulcanization chamber 10 and a mold. The mold is arranged inside the vulcanization chamber 10 to shape a tire. The vulcanizer further includes a mold heating structure. The mold heating mechanism is arranged at the top of the vulcanization chamber 10 to heat the mold, and the mold heating structure is the above-mentioned mold heating structure.

[0038] The present invention also provides a modified vulcanizer. The vulcanizer heats a tire vulcanization mold through the above-mentioned mold heating structure, so that the green tire in the mold undergoes a chemical reaction and softens.

[0039] In addition, in order to heat the tire in all directions, the vulcanizer in the present invention is also provided with a heating plate assembly on its body. The heating plate assembly includes two heating plates, the upper and the lower. The mold is located between the two heating plates. The mold heats the side surface of the tire, and the heating plate assembly heats the upper and lower surfaces of the tire.

[0040] The vulcanization chamber 10 includes a top plate 13 and side walls 14. The top plate 13 is arranged at the top of the side walls 14 and encloses a vulcanization cavity with the side walls 14. Among them, a first heating port 11 and a first heat dissipation port are provided on the top plate 13. The first intake pipe 20 of the mold heating structure passes through the first heating port 11 and is connected to the mold. The first outlet pipe 21 passes through the first heat dissipation port and is connected to the mold. A second heating port and a second heat dissipation port 12 are provided on the side walls 14. The second intake pipe 30 of the mold heating structure passes through the second heating port and is connected to the mold. The second outlet pipe 31 of the mold heating structure passes through the second heat dissipation port 12 and is connected to the mold.

[0041] As Figure 1 shown, the vulcanization chamber 10 in this embodiment includes multiple parts. Among them, the side walls 14 are of a cylindrical structure, and the top plate 13 closes the upper end of the side walls 14. In order to ensure that the vulcanization chamber 10 can use a variety of different types of molds, a first heating port 11 is opened on the top plate 13. The first intake pipe 20 is vertically inserted into the first heating port 11. A conversion joint is also provided inside the vulcanization chamber 10. The first intake pipe 20 is connected to the conversion joint and thus communicated with the mold. A second heat dissipation port 12 is provided on the side walls 14. The air outlet is horizontally inserted into the second heat dissipation port 12 to be connected to the air outlet of the mold.

[0042] The mold is provided with an air inlet, an air outlet and a heating cavity. The first intake pipe 20 on the mold heating structure is connected to the air inlet to introduce a gas at a preset temperature into the heating cavity through the air inlet. The second outlet pipe 31 on the mold heating structure is connected to the air outlet to discharge the gas in the heating cavity through the air outlet.

[0043] The mold heating structure in this embodiment uses high-temperature steam for heating, with a high heating temperature and good effect.

[0044] The mold includes a first mold body 60 and a second mold body. The vulcanizer further includes: a driving oil cylinder 70, which is drivingly connected to the first mold body 60. Among them, the second mold body is fixed in the vulcanization chamber 10, and the driving oil cylinder 70 drives the first mold body 60 to approach or move away from the second mold body; a heating cavity is arranged on the side plate of the first mold body 60 and is connected end to end around the side plate to form a sealed annular cavity.

[0045] In this embodiment, the mold is divided into upper and lower parts. The upper first mold body 60 is connected to the driving oil cylinder 70, and the lower second mold body is fixed at the bottom of the vulcanization chamber 10. The driving oil cylinder 70 drives the first mold body 60 to lift and move relative to the second mold body, so as to open or close the mold body. The heating cavity in the mold heating structure is located on the side of the mold, inside the side plate of the mold and around the side wall in a circle. The side plate of the mold body is a circular cylindrical structure.

[0046] A method for replacing a mold of a vulcanizer, which is used to install the mold into the above-mentioned vulcanizer. Among them, the mold is provided with a first heating port 11 and a first heat dissipation port. The method for replacing a mold of a vulcanizer includes: Step S1: Set the first heating port 11 of the mold corresponding to the position of the first intake pipe 20 of the mold heating structure in the vulcanizer, and set the first heat dissipation port of the mold corresponding to the position of the first exhaust pipe 21 of the mold heating structure in the vulcanizer; Step S2: Connect the mold to the driving oil cylinder in the vulcanizer.

[0047] The method for replacing a mold of a vulcanizer provided by the present invention can quickly replace molds of different models. Before replacing the mold, the heating port and the heat dissipation port on the vulcanizer are arranged at the top of the vulcanization chamber. The first intake pipe 20 of the mold heating structure is connected to the heating port, and the first exhaust pipe 21 is connected to the heat dissipation port. When installing the mold, first align the first heating port 11 on the mold with the first intake pipe 20, and at the same time align the first heat dissipation port with the position of the first exhaust pipe 21, and then bring the mold into contact with the first intake pipe 20 and the first exhaust pipe 21, so that the hot air coming in from the first intake pipe 20 enters the mold through the first heating port 11 to heat the tire in the mold. The setting of the first heat dissipation port and the first exhaust pipe 21 is similar to the setting principle of the first heating port 11 and the first intake pipe 20.

[0048] The horizontal distance from the first heating port 11 on the mold of the present invention to the driving oil cylinder 70 is equal to the horizontal distance from one end of the first intake pipe 20 located in the vulcanization chamber 10 to the driving oil cylinder 70; the horizontal distance from the first heat dissipation port to the driving oil cylinder 70 is equal to the horizontal distance from one end of the first exhaust pipe 21 located in the vulcanization chamber 10 to the driving oil cylinder 70. In order to meet this condition, when setting molds of different models, first refer to the positions of the first intake pipe 20 and the first exhaust pipe 21 so as to connect with the first heating port 11 and the first heat dissipation port.

[0049] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0050] The mold heating structure provided by the present invention is mainly used to heat a tire vulcanization mold so that the tire is softened at a high temperature inside the mold. When heating the mold, high-temperature steam is used as the heat source. Specifically, the mold is arranged in the vulcanization chamber 10, and the first intake pipe 20 and the first outlet pipe 21 are arranged on the top plate of the vulcanization chamber and respectively pass through the vulcanization chamber 10 to be connected to the mold. In order to prevent gas leakage during the vulcanization process of the tire, a first sealing assembly 80 is arranged between the first intake pipe 20 and the vulcanization chamber 10 and between the first outlet pipe 21 and the vulcanization chamber to prevent gas from escaping through the gap between the first intake pipe 20 and the vulcanization chamber 10 or the gap between the first outlet pipe 21 and the vulcanization chamber 10, thus solving the problem of air leakage in the vulcanization chamber.

[0051] In addition, in order to make full use of the vulcanizer and enable the vulcanizer to process tires of different models, the vulcanizer is modified to be able to adapt to the molds suitable for tires of different models. However, changing the mold poses new challenges to the existing vulcanization chamber 10. Since the positions of the heating air inlet and outlet of different molds are at different heights, the heating structure on the existing vulcanization chamber 10 cannot be docked with molds of different models. In order to solve the above problems, the first intake pipe 20 and the first outlet pipe 21 are arranged above the vulcanization chamber 10 and close to the center of the vulcanization chamber 10. Specifically, the distances from the first intake pipe 20 and the first outlet pipe 21 to the center of the vulcanization chamber 10 are less than the radius of the smallest-sized tire. In this way, even the mold of the smallest tire can be provided with a communication port at the corresponding positions of the first intake pipe 20 and the first outlet pipe 21 to be connected to the first intake pipe 20 and the first outlet pipe 21, solving the problem that the changed mold cannot be matched with the mold heating structure of the vulcanization chamber 10 and improving the mold change efficiency.

[0052] The vulcanizer of the present invention includes a vulcanization chamber, a vulcanization mold, and an air extraction assembly. The vulcanization chamber has a vulcanization cavity; the vulcanization mold is arranged in the vulcanization cavity. Among them, the vulcanization mold includes a first mold body and a second mold body, and the first mold body is movably arranged relative to the second mold body so as to form a sealed space with the second mold body when the first mold body moves close to and connects with the second mold body; the air extraction assembly is arranged on the vulcanization chamber and communicates with the vulcanization cavity to extract the gas in the vulcanization cavity.

[0053] The vulcanizer provided by the present invention is mainly used for vulcanizing tires and printing patterns on the upper surface of the tires. During the vulcanization process, the green tire is first placed into a mold, and then the bladder inside the mold is inflated. At the same time, the tire is heated to make it soften at high temperature. The bladder is located inside the tire. After inflation, pressure is applied to the tire to press it against the mold. In order to discharge the gas outside the bladder in the mold so that the tire will not be subjected to the reverse pressure of the gas in the mold when the tire is pressurized, resulting in bubbles or burrs remaining on the tire, an air extraction component is provided on the vulcanization chamber in this application. The air extraction component is communicated with the vulcanization cavity of the vulcanization chamber to extract the gas in the vulcanization chamber before or during vulcanization, so that the tire is vulcanized in a vacuum environment. This avoids the defects caused by the gas remaining in the mold during the vulcanization process of the tire, and there is no need to set exhaust holes on the mold. Subsequently, there is no need to remove the tire hair, saving the process and improving the production efficiency.

[0054] The present invention provides a vulcanizer with two vulcanization chambers. In order to cooperate with the vulcanization chambers, two sets of vulcanization molds and air extraction components are respectively provided and connected to the corresponding vulcanization chambers. A driving mechanism is provided on the machine body between the two vulcanization chambers. The driving mechanism uses an oil cylinder, and the oil cylinder is simultaneously connected to the first shells of the two vulcanization chambers to simultaneously drive the first shells to move up and down relative to the second shells, improving the working efficiency of the vulcanizer and making the structure of the vulcanizer more compact.

[0055] In addition, the vulcanizer can also be provided with 4 vulcanization chambers, etc. according to needs.

[0056] The vulcanizer of the present invention adopts the following tire vulcanization method: Step S1: Install the tire to be vulcanized on the second mold body of the vulcanization mold; Step S2: Move the first mold body of the vulcanization mold close to the second mold body and turn on the air extraction component to extract the gas in the vulcanization cavity of the vulcanization chamber; Step S3: After the first mold body and the second mold body are closed, vulcanize the tire. Step S2 further includes: Step S21: Turn off the air extraction component when the vacuum degree in the vulcanization cavity reaches a preset value. The tire vulcanization method further includes: Step S4: After the tire is vulcanized, separate the first mold body from the second mold body and turn on the air extraction component to extract the gas in the vulcanization cavity.

[0057] The present invention provides a brand-new vacuum vulcanizer, which improves the vulcanization process of the vulcanizer. The vulcanization chamber is divided into two upper and lower shells: the first shell and the second shell, and the vulcanization mold is divided into two upper and lower mold bodies: the first mold body and the second mold body. The first mold body is arranged in the first shell, and the second mold body is arranged on the second shell. During vulcanization, first place the tire on the second mold body, and then the first shell and the first mold body descend simultaneously and move close to the second mold body. When the first mold body is about to approach the second mold body, turn on the air extraction component to extract air from the space between the first shell and the second shell until the first shell and the second shell are completely closed and locked. A pressure sensor is also provided in the vulcanization chamber. When the vacuum degree in the vulcanization chamber reaches the preset value, the air extraction component is closed. After the first mold body and the second mold body are closed, the vulcanizer vulcanizes the tire in the first mold body and the second mold body. After the treatment is completed, the lifting mechanism drives the first mold body to move upward away from the second mold body, and then the air extraction component starts to extract air to discharge the waste gas and hot air generated during vulcanization, reducing the amount of waste gas flowing into the vulcanization workshop and improving the workshop environment.

[0058] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0059] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps described in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that for the sake of description, the sizes of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the authorized specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0060] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. Without contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present invention; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0061] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "above-mentioned", etc. can be used here to describe the spatial positional relationship of one device or feature to other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation other than the orientation described in the drawings for the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned as "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.

[0062] In addition, it should be noted that using words such as "first", "second", etc. to limit components is only for the convenience of distinguishing the corresponding components. Without additional statement, the above words have no special meaning. Therefore, it should not be construed as a limitation on the protection scope of the present invention.

[0063] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A mold heating structure for heating a mold in a vulcanization chamber (10). Characterized in that, The mold heating structure includes: A first inlet pipe (20) and a first outlet pipe (21), the first inlet pipe (20) and the first outlet pipe (21) are arranged at the top of the vulcanization chamber (10) and are respectively connected to the mold in the vulcanization chamber (10) to heat the mold by introducing a gas at a preset temperature into the heating cavity of the mold; A first sealing assembly (80), the first sealing assembly is arranged between the first inlet pipe (20) and the vulcanization chamber (10), and / or between the first outlet pipe (21) and the vulcanization chamber (10); The first inlet pipe (20) and the first outlet pipe (21) are arranged at a position close to the center of the vulcanization chamber (10), and the distances from the first inlet pipe (20) and the first outlet pipe (21) to the center of the vulcanization chamber (10) are less than the radius of the tire with the smallest size.

2. The mold heating structure according to claim 1, Characterized in that, The first sealing assembly (80) includes: A first sealing ring, the first sealing ring is sleeved on the first inlet pipe (20) or arranged in the first heating port (11) of the vulcanization chamber (10), and the first inlet pipe (20) is connected to the first heating port (11) through the first sealing ring, and / or A third sealing ring, the third sealing ring is arranged on the first outlet pipe (21) or arranged in the first heat dissipation port of the vulcanization chamber (10), and the first outlet pipe (21) is connected to the first heat dissipation port through the third sealing ring.

3. The mold heating structure according to claim 2, Characterized in that, A first installation groove is provided on the outer wall surface of the first inlet pipe (20), and the first sealing ring is arranged in the first installation groove, wherein at least part of the first sealing ring is located outside the first installation groove; A third installation groove is provided on the outer wall surface of the first outlet pipe (21), and the third sealing ring is arranged in the third installation groove of the first inlet pipe (20), wherein at least part of the third sealing ring is located outside the third installation groove.

4. The mold heating structure according to claim 1, Characterized in that, The mold heating structure further includes: A second inlet pipe (30) and a second outlet pipe (31), the second inlet pipe (30) and / or the second outlet pipe (31) are arranged on the circumferential side surface of the vulcanization chamber (10) and are respectively connected to the mold in the vulcanization chamber (10) to heat the mold by introducing a gas at a preset temperature into the heating cavity of the mold; A second sealing assembly (40), the second sealing assembly is arranged between the second inlet pipe (30) and the vulcanization chamber (10), and / or between the second outlet pipe (31) and the vulcanization chamber (10).

5. The mold heating structure according to claim 4, Characterized in that, The second sealing assembly (40) includes: A second sealing ring, the second sealing ring is sleeved on the second air inlet pipe (30) or arranged in the second heating port of the vulcanizing chamber (10), and the second air inlet pipe (30) is connected to the second heating port through the second sealing ring, and / or A fourth sealing ring, the fourth sealing ring is arranged in the second air outlet pipe (31) or arranged in the second heat dissipation port (12) of the vulcanizing chamber (10), and the second air outlet pipe (31) is connected to the second heat dissipation port (12) through the fourth sealing ring.

6. The mold heating structure according to claim 5, characterized in that a second installation groove is provided on the outer wall surface of the second air inlet pipe (30), and the second sealing ring is arranged in the second installation groove, wherein at least a part of the second sealing ring is located outside the second installation groove; a fourth installation groove is provided on the outer wall surface of the second air outlet pipe (31), and the fourth sealing ring is arranged in the fourth installation groove, wherein at least a part of the fourth sealing ring is located outside the fourth installation groove.

7. The mold heating structure according to claim 4, characterized in that the mold heating structure further includes: a third sealing assembly (50), the third sealing assembly (50) is arranged on the first air inlet pipe (20) and / or between the first air outlet pipe (21) and the mold; a fourth sealing assembly, the fourth sealing assembly is arranged between the second air inlet pipe (30) and / or the second air outlet pipe (31) and the mold.

8. A vulcanizer, comprising a vulcanizing chamber (10) and a mold, the mold is arranged in the vulcanizing chamber (10) to shape a tire, characterized in that the vulcanizer further includes a mold heating structure, the mold heating mechanism is arranged on the top of the vulcanizing chamber (10) for heating the mold, and the mold heating structure is the mold heating structure according to any one of claims 1 to 7.

9. The vulcanizer according to claim 8, characterized in that the vulcanizing chamber (10) includes a top plate (13) and side walls (14), the top plate (13) is arranged on the top of the side walls (14) and encloses a vulcanizing cavity with the side walls, wherein a first heating port (11) and a first heat dissipation port are provided on the top plate (13), the first air inlet pipe (20) of the mold heating structure passes through the first heating port (11) to be connected to the mold, and the first air outlet pipe (21) of the mold heating structure passes through the first heat dissipation port to be connected to the mold; a second heating port and a second heat dissipation port (12) are provided on the side walls (14), the second air inlet pipe (30) of the mold heating structure passes through the second heating port to be connected to the mold, and the second air outlet pipe of the mold heating structure passes through the second heat dissipation port (12) to be connected to the mold.

10. The vulcanizer according to claim 8, characterized in that the mold includes a first mold body (60) and a second mold body, and the vulcanizer further includes: A driving oil cylinder (70), the driving oil cylinder (70) is drivingly connected to the first die body (60), wherein the second die body is fixed in the vulcanizing chamber (10), and the driving oil cylinder (70) drives the first die body (60) to approach or move away from the second die body; The heating cavity is arranged on the side plate of the first die body (60) and is connected end to end around the side plate to form a sealed annular cavity.

11. A method for replacing a die of a vulcanizer Characterized in that It is used to install a die into the vulcanizer according to any one of claims 8 to 10, wherein a first heating port (11) and a first heat dissipation port are provided on the die, and the method for replacing the die of the vulcanizer includes: Step S1: Arrange the first heating port (11) of the die corresponding to the position of the first intake pipe (20) of the die heating structure in the vulcanizer, and arrange the first heat dissipation port of the die corresponding to the position of the first exhaust pipe (21) of the die heating structure in the vulcanizer; Step S2: Connect the die to the driving oil cylinder (70) in the vulcanizer.

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