Gas circulating system and tire vulcanizing device comprising same

Abstract

The utility model belongs to the technical field of tire vulcanization, and particularly relates to a gas circulation system and a tire vulcanization device comprising the same. The gas circulation system comprises a transmission structure, a driving structure, pump bodies and movable structures, the transmission structure comprises crankshafts and connecting rods, cranks of the crankshafts are connected with the movable structures in the pump bodies through the connecting rods, the number of the pump bodies is multiple, the cranks, the movable structures, the connecting rods and the pump bodies are in one-to-one correspondence, and any cranks are not collinear. According to the reciprocating pump, the multiple reciprocating pump bodies are combined with the crankshafts for use, the adjacent crankshafts are not collinear, it is guaranteed that when one reciprocating pump body reaches the reversing position, other reciprocating pump bodies are still in the normal motion state, reversing impact is reduced to the minimum, it is guaranteed that gas is stably output, and the service life of the reciprocating pump body is prolonged. The reversing impact between the reciprocating pump bodies in the air intake and exhaust processes is avoided; and the number of the pump bodies can be increased or decreased according to the gas flow, so that the pump bodies of the same specification can meet the requirements of different pump bodies.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of tire vulcanization, and particularly relates to a gas circulation system and a tire vulcanization device comprising the same. BACKGROUND

[0002] The electric heating tire vulcanization equipment is an important tire manufacturing equipment, and its working principle is to pass high-pressure gas (generally nitrogen) into the vulcanization capsule, and then heat the high-pressure gas through a heating device. The heated gas circulates in the vulcanization capsule, thereby vulcanizing the tire. In this process, the gas circulation system as a core component plays a crucial role.

[0003] However, the gas circulation system currently used in the electric heating tire vulcanization equipment generally uses existing gas circulation devices or pumps. The following describes the deficiencies of commonly used gas circulation systems. Specifically:

[0004] Centrifugal gas circulation device and Roots pump:

[0005] Problem: Although these devices can meet the demand for gas circulation to some extent, their service life is relatively short. At the same time, in the high-pressure and high-temperature vulcanization environment, the flow or pressure of these devices often fails to meet the requirements of the vulcanization process, thereby affecting the vulcanization quality and production efficiency of the tire.

[0006] Reason: The centrifugal gas circulation device and the Roots pump have certain limitations in design and manufacturing, which are difficult to adapt to the high-pressure and high-temperature vulcanization environment. In addition, the materials and structures of these devices may cause wear and damage during long-term use.

[0007] Single-piston reciprocating pump:

[0008] Problem: Although the single-piston reciprocating pump can provide certain flow and pressure, it has the problem of large periodic impact. This periodic impact not only damages the vulcanization capsule and the tire, but also affects the stability and uniformity of gas circulation, thereby affecting the vulcanization quality of the tire.

[0009] Reason: The working principle of the single-piston reciprocating pump determines that it will produce periodic impact. During the vulcanization process, this impact causes pressure fluctuations inside the vulcanization capsule and the tire, thereby affecting the vulcanization effect and the quality of the tire.

[0010] In summary, the gas circulation system currently used in the electrically heated tire vulcanization equipment has the problems of short service life, insufficient flow or pressure, and large periodic impact. These problems not only affect the vulcanization quality and production efficiency of the tire, but also increase the maintenance cost and use risk of the equipment. Therefore, it is necessary to improve and optimize the existing gas circulation system to improve its service life, flow and pressure stability, and reduce the damage of periodic impact to the tire and vulcanization capsule.

[0011] Through the elaboration of the above background technology, it can be seen that the development of a new type of gas circulation system is of great significance to improve the performance and quality of the electrically heated tire vulcanization equipment. This is also a technical problem that needs to be solved by relevant technical personnel. Practical new type content

[0012] The purpose of the present application is to provide a gas circulation system and a tire vulcanization device comprising the system to solve the problems of short service life, insufficient flow or pressure, and large periodic impact of the existing gas circulation system.

[0013] Embodiments of the present application can be implemented by the following technical solutions:

[0014] A gas circulation system comprises a transmission structure, a driving structure, a pump body and a movable structure, the transmission structure is connected with the output end of the driving structure, comprising a crankshaft and a connecting rod, the crank of the crankshaft is connected with the movable structure in the pump body through the connecting rod;

[0015] The number of pump bodies is multiple, the crank, the movable structure, the connecting rod and the pump body are one-to-one corresponding, and any two cranks are not collinear.

[0016] Further, the included angle of adjacent cranks in the axial projection of the crankshaft is equal or unequal.

[0017] Further, the number of cranks is odd or even.

[0018] Optionally, the pump body is located on both sides or the same side of the axial direction of the crankshaft.

[0019] Optionally, the pump body is arranged at a V-shaped angle with the axial direction of the crankshaft.

[0020] Further, the size of the V-shaped angle is 60° or 90°.

[0021] Further, it further comprises an air inlet one-way valve and an air outlet one-way valve, the movable structure divides the pump body into two relatively independent chambers, the driving structure drives the movable structure to move in the pump body through the transmission structure, and the pressure difference between the two chambers drives the air inlet one-way valve or the air outlet one-way valve to open.

[0022] Further, the number of the air inlet one-way valve and the air outlet one-way valve corresponding to each pump body is two respectively.

[0023] Further, each chamber is connected with one air inlet one-way valve and one air outlet one-way valve.

[0024] A tire vulcanization device comprising the gas circulation system, and

[0025] A lower clamping assembly;

[0026] An upper clamping assembly;

[0027] A vulcanization capsule, a lower clamping edge of the vulcanization capsule is clamped by the lower clamping assembly, an upper clamping edge of the vulcanization capsule is clamped by the upper clamping assembly, the vulcanization capsule is arranged at the inner side of a tire mold, and a tire to be vulcanized is arranged between the vulcanization capsule and the tire mold;

[0028] A center rod, an upper end of the center rod is fixedly connected with the upper clamping assembly, and the center rod is arranged to be movable up and down relative to the lower clamping assembly to expand or contract the vulcanization capsule;

[0029] A ring seat, the ring seat is arranged at the inner side of the lower clamping assembly, an air inlet hole and an air outlet hole are formed in the ring seat, an air inlet circulation pipeline and an air outlet circulation pipeline are formed between the air inlet hole and the air outlet hole, the gas circulation system is communicated between the air inlet circulation pipeline and the air outlet circulation pipeline, the air inlet circulation pipeline is communicated with the air inlet one-way valve, and the air outlet circulation pipeline is communicated with the air outlet one-way valve;

[0030] A heater, the heater is arranged on the air inlet circulation pipeline or the air outlet circulation pipeline.

[0031] The embodiment of the present application provides a gas circulation system and a tire vulcanization device comprising the system, and at least has the following beneficial effects:

[0032] The present application uses a plurality of reciprocating pump bodies combined with a crankshaft, and the adjacent cranks are not collinear, so that when one reciprocating pump body reaches the reversing position, the other reciprocating pump bodies are still in the normal movement state, the reversing impact is reduced to the minimum, the gas is output more stably, and the reversing impact between the reciprocating pump bodies in the air inlet and outlet process is avoided.

[0033] The number of the pump bodies in the present application can be increased or decreased according to the size of the gas flow, and the same specification pump body can meet the requirements of different pump bodies. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1Structure diagram of the gas circulation system in the present application Figure 1 ;

[0035] Figure 2 Structure diagram of the gas circulation system in the present application Figure 2 ;

[0036] Figure 3 Sectional view of the schematic structure of the tire vulcanizing device in the present application.

[0037] Reference signs: A, air intake circulation pipeline, B, exhaust circulation pipeline, X, air intake hole, Y, exhaust hole, S, tire mold, 1, gas circulation system, 11, transmission structure, 111, crankshaft, 1111, crank, 112, connecting rod, 12, driving structure, 13, pump body, 14, movable structure, 15, air intake one-way valve, 16, air outlet one-way valve, 2, vulcanizing capsule, 3, lower clamping assembly, 4, upper clamping assembly, 5, center rod, 6, ring seat, 7, air intake control valve, 8, circulation control valve, 9, exhaust control valve, 10, heater. DETAILED DESCRIPTION

[0038] Hereinafter, the present application will be further described based on the preferred embodiments and with reference to the accompanying drawings.

[0039] The words in the specification are used for the purpose of describing the embodiments of the present application, but are not intended to limit the present application. Unless otherwise explicitly specified and limited, if the terms "provided", "connected", "connected" appear, they should be understood broadly, for example, they can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, can be directly connected, or indirectly connected through an intermediate medium, can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be specifically understood.

[0040] In addition, in the description in the embodiments of the present application, various components on the drawing are exaggerated or reduced for the convenience of understanding, but such practice is not intended to limit the protection scope of the present application.

[0041] The present application provides a gas circulation system 1, Figure 1 and Figure 2 different structure diagrams of the gas circulation system 1 are shown respectively, as shown in Figure 1 and Figure 2 The gas circulation system 1 includes a transmission structure 11, a driving structure 12, a pump body 13 and a movable structure 14, the transmission structure 11 is connected with the output end of the driving structure 12, the driving structure 12 is connected with the movable structure 14 in the pump body 13 through the transmission structure 11, and the movable structure 14 can be driven to move in the pump body 13, so as to realize the gas circulation function of the gas circulation system 1.

[0042] Specifically, as shown in Figure 1 and Figure 2 The transmission structure 11 in the application includes a crankshaft 111 and a connecting rod 112, the crank 1111 of the crankshaft 111 is connected with the movable structure 14 through the connecting rod 112, the driving structure 12 transmits power to the crank 1111 through the connecting rod 112, thereby driving the crankshaft 111 to rotate, and further driving the movable structure 14 to make reciprocating motion in the pump body 13, thereby realizing the gas circulation function.

[0043] Further, the number of pump bodies 13 is multiple, the crank 1111, the movable structure 14, and the connecting rod 112 correspond to the pump body 13 one by one, and any two cranks 1111 are not collinear. The application uses multiple reciprocating pump bodies 13 to combine the crankshaft 111, and the adjacent cranks 1111 are not collinear, which ensures that when one reciprocating pump body 13 reaches the reversing position, the other reciprocating pump bodies 13 are still in the normal motion state, thereby minimizing the reversing impact, ensuring that the gas is output relatively smoothly, and avoiding the reversing impact between the reciprocating pump bodies 13 during the intake and exhaust process. In addition, the number of pump bodies 13 can be increased or decreased according to the size of the gas flow, and the same specification pump body 13 can meet the requirements of different pump bodies 13.

[0044] Further, the included angles of the adjacent cranks 1111 in the axial projection of the crankshaft 111 are equal or unequal.

[0045] Further, the number of cranks 1111 is odd or even.

[0046] In some specific embodiments of the application, the number of cranks 1111 is three, and the included angles of the adjacent cranks 1111 in the axial projection are all 60°.

[0047] In some other specific embodiments of the application, the number of cranks 1111 is four, and the included angles of the adjacent cranks 1111 in the axial projection are a, b, c, and d, respectively. a, b, c, and d can all be different, can be the same in pairs, can be the same in pairs and different in pairs, can be three same, or can be four same. No matter how the degrees of the included angles are set, as long as any two cranks 1111 are not collinear in the axial projection.

[0048] In some specific embodiments of the application, as shown in Figure 1 , the pump body 13 is located on the same side of the axial line direction of the crankshaft 111.

[0049] In some other specific embodiments of the application, as shown in Figure 2 , the pump body 13 is located on both sides of the axial line direction of the crankshaft 111.

[0050] In some specific embodiments of the present application, the pump body 13 is arranged at a V-shaped angle with the axis direction of the crankshaft 111.

[0051] Optionally, the V-shaped angle is 60°, 90°, etc.

[0052] Further, as shown in Figure 1 and Figure 2 , the gas circulation system 1 further comprises an air inlet one-way valve 15 and an air outlet one-way valve 16, the movable structure 14 divides the pump body 13 into two relatively independent chambers, the driving structure 12 drives the movable structure 14 to move in the pump body 13 through the transmission structure 11, and the pressure difference between the two chambers drives the air inlet one-way valve 15 or the air outlet one-way valve 16 to open. The movable structure 14 moves in the pump body 13, which causes the pressure in the chambers on both sides of the movable structure 14 to be different, the pressure in the chamber in the positive direction of the movement of the movable structure 14 increases, the pressure difference drives the air outlet one-way valve 16 to open, and the gas is discharged; the pressure in the chamber in the reverse direction of the movement of the movable structure 14 decreases, the pressure difference drives the air inlet one-way valve 15 to open, and the gas enters.

[0053] Further, the number of the air inlet one-way valve 15 and the air outlet one-way valve 16 corresponding to each pump body 13 is two, that is, each pump body 13 corresponds to two air inlet and outlet one-way valves.

[0054] Further, each chamber is connected with an air inlet one-way valve 15 and an air outlet one-way valve 16.

[0055] It can be imagined that the movable structure 14 can be a piston, a plunger, a slider, etc.

[0056] In some preferred embodiments of the present application, the movable structure 14 is a piston, the piston is connected with the connecting rod 112 through a piston rod, and has the advantages of compact structure, high precision, good sealing effect, efficient conversion, and strong adaptability.

[0057] The overall structure diagram of the tire vulcanizing device to which the gas circulation system 1 is applied will be introduced below.

[0058] Figure 3 The cross-sectional view showing the schematic structure of the tire vulcanizing device is shown in Figure 3As shown, the tire vulcanizing device includes a gas circulation system 1, a vulcanizing bladder 2, a lower clamping assembly 3, an upper clamping assembly 4, a central rod 5, a ring seat 6, and a gas heater 10. The gas circulation system 1 provides gas at a certain temperature and pressure to the vulcanizing bladder 2 during the vulcanization process, ensuring a continuous and stable supply of gas to the tire's interior. The vulcanizing bladder 2 fits tightly against the inner wall of the tire and expands by being filled with gas, thereby applying uniform pressure to the tire for vulcanization. Thus, there is a close working relationship between the various components of the tire vulcanizing device and the tire to be vulcanized. These components work together to ensure that the tire receives uniform pressure and stability during the vulcanization process, thereby achieving a high-quality vulcanization effect.

[0059] Specifically, the lower edge of the vulcanizing capsule 2 is held by the lower clamping component 3, and the upper edge is held by the upper clamping component. The vulcanizing capsule 2 is located inside the tire mold S, and a tire to be vulcanized is placed between the vulcanizing capsule 2 and the tire mold S.

[0060] Specifically, the upper end of the central rod 5 is fixedly connected to the upper clamping assembly 4, and the central rod 5 is configured to move relative to the lower clamping assembly 3 in the vertical direction to expand or contract the vulcanized capsule 2.

[0061] Specifically, the ring seat 6 is located inside the lower clamping assembly 3. An air inlet X and an exhaust outlet Y are provided on the ring seat 6. An air intake circulation pipe A and an exhaust circulation pipe B are formed between the air intake X and the exhaust outlet Y. The gas circulation system 1 is connected between the air intake circulation pipe A and the exhaust circulation pipe B. The air intake circulation pipe A is connected to the air intake check valve 15, and the exhaust circulation pipe B is connected to the exhaust check valve 16. The heater 10 is provided on the air intake circulation pipe A or the exhaust circulation pipe B.

[0062] Furthermore, such as Figure 3 As shown, an intake control valve 7 is installed on the intake circulation pipeline A. The intake control valve 7 is connected to the external intake pipe to control the flow rate and pressure regulation of the external intake air, thereby ensuring the vulcanization quality.

[0063] Furthermore, a circulation control valve 8 is also installed on the intake circulation pipeline A to precisely control the circulating gas and ensure the quality of vulcanization.

[0064] Furthermore, an exhaust control valve 9 is installed on the exhaust circulation pipeline B. The exhaust control valve 9 is connected to the external exhaust pipe to control the flow rate and pressure regulation of the external exhaust, thereby ensuring the vulcanization quality.

[0065] In some preferred embodiments of this application, the tire vulcanizing apparatus further includes a control system for automatically and precisely adjusting the intake control valve 7, the circulation control valve 8, and the exhaust control valve 9 to ensure the stability and controllability of the vulcanizing process.

[0066] The specific implementation ways of the present application are described in detail above, and for the person skilled in the art, some improvements and modifications can be made to the present application without departing from the principles of the present application, and these improvements and modifications also belong to the protection scope of the claims of the present application.

Claims

1. A gas circulation system (1) comprising a transmission structure (11), a driving structure (12), a pump body (13) and a movable structure (14), the transmission structure (11) being connected with the output end of the driving structure (12), comprising a crankshaft (111) and a connecting rod (112), the crank (1111) of the crankshaft (111) being connected with the movable structure (14) in the pump body (13) through the connecting rod (112), characterized in that: the number of the pump body (13) is multiple, the crank (1111), the movable structure (14), the connecting rod (112) and the pump body (13) are one-to-one corresponding, and any two of the cranks (1111) are not collinear.

2. The gas circulation system (1) according to claim 1, characterized in that: the included angles of adjacent cranks (1111) in the axial projection of the crankshaft (111) are equal or unequal.

3. The gas circulation system (1) according to claim 1, characterized in that: the number of the cranks (1111) is odd or even.

4. The gas circulation system (1) according to claim 1, characterized in that: the pump body (13) is located on both sides or the same side of the axis direction of the crankshaft (111).

5. The gas circulation system (1) according to claim 1, characterized in that: the pump body (13) is arranged at a V-shaped angle with the axis direction of the crankshaft (111).

6. The gas circulation system (1) according to claim 5, characterized in that: the size of the V-shaped angle is 60° or 90°.

7. The gas circulation system (1) according to claim 5, characterized in that: it further comprises an air inlet one-way valve (15) and an air outlet one-way valve (16), the movable structure (14) divides the pump body (13) into two relatively independent chambers, the driving structure (12) drives the movable structure (14) to move in the pump body (13) through the transmission structure (11), and the pressure difference between the two chambers drives the air inlet one-way valve (15) or the air outlet one-way valve (16) to open.

8. The gas circulation system (1) according to claim 7, characterized in that: the number of the air inlet one-way valve (15) and the air outlet one-way valve (16) corresponding to each pump body (13) is two respectively.

9. The gas circulation system (1) according to claim 8, characterized in that: each chamber is connected with one air inlet one-way valve (15) and one air outlet one-way valve (16). The gas circulation system (1) according to any one of claims 1-9, and a lower clamping assembly (3); an upper clamping assembly (4); a vulcanization capsule (2), the lower clamping edge of the vulcanization capsule (2) being clamped by the lower clamping assembly (3), the upper clamping edge of the vulcanization capsule (2) being clamped by the upper clamping assembly (4), the vulcanization capsule (2) being arranged on the inner side of a tire mold (S), and a tire to be vulcanized being arranged between the vulcanization capsule (2) and the tire mold (S). ​ ​ ​ ​ ​ 10. A tire vulcanization apparatus characterized by comprising: ​ ​ ​ ​ a center rod (5) having an upper end fixedly connected with the upper clamping assembly (4) and being arranged to move up and down relative to the lower clamping assembly (3) to expand or contract the curing capsule (2); a ring seat (6) arranged on the inner side of the lower clamping assembly (3), the ring seat (6) being provided with an air inlet hole (X) and an air outlet hole (Y), the air inlet hole (X) and the air outlet hole (Y) forming an air inlet circulation pipeline (A) and an air outlet circulation pipeline (B), the gas circulation system (1) being communicated between the air inlet circulation pipeline (A) and the air outlet circulation pipeline (B), the air inlet circulation pipeline (A) being communicated with the air inlet one-way valve (15), and the air outlet circulation pipeline (B) being communicated with the air outlet one-way valve (16); a heater (10) arranged on the air inlet circulation pipeline (A) or the air outlet circulation pipeline (B).

Images