A pneumatic control safety system for the post-inflation device of a vulcanizer

Abstract

The present invention discloses a pneumatic control safety system for a post-inflation device of a vulcanizer, specifically including an air source. The air source serves as the power source for all components, supplying air to the crossbeam lifting cylinder, the opening / closing locking cylinder, and the inflation port respectively. To ensure that the opening / closing locking cylinder is always in a locked state when the crossbeam lifting cylinder is in operation, through the linkage design of an air source solenoid valve and a pneumatic control valve, no matter what state the control valve for the opening / closing locking cylinder is in, air will not be released from the rod chamber of the opening / closing locking cylinder. Compared with the prior art, the beneficial effect of the present invention is that through the air circuit design, the opening / closing locking cylinder is always kept in a locked state during the operation of the crossbeam lifting cylinder, so as to ensure the safety and reliability during the production process.

Description

Technical Field

[0001] The present invention belongs to the field of vulcanizer equipment, and particularly relates to a pneumatic control safety system for a post-inflation device of a vulcanizer. Background Art

[0002] The post-inflation device of a tire shaping vulcanizer inflates and cools the tires that need to be cooled and shaped to improve the quality of the tires.

[0003] During the operation of the post-inflation device of a tire shaping vulcanizer, specifically through the cooperation of the lifting of the crossbeam and the chuck, the clamping, locking, and inflation of the tire are realized. Its structure is generally that a lifting cylinder drives the crossbeam to lift, and the opening and closing cylinder of the chuck always clamps the tire during the lifting process. The current pneumatic control method is mostly a single drive structure. When a control valve of the opening and closing cylinder fails, it is extremely easy to send out an incorrect signal, resulting in the risk of the tire falling, and there are great safety hazards in the production process. Summary of the Invention

[0004] Details of one or more embodiments of the present invention are set forth in the following drawings and description to make other features, objects, and advantages of the present application more concise and understandable.

[0005] The present invention provides a pneumatic control safety system for a post-inflation device of a vulcanizer. Through the gas path design, during the operation of the crossbeam lifting cylinder, the opening and closing cylinder is always kept in a locked state to ensure the safety and reliability during the production process.

[0006] The present invention discloses a pneumatic control safety system for a post-inflation device of a vulcanizer, including:

[0007] Air source, crossbeam lifting cylinder, opening and closing cylinder;

[0008] Air source solenoid valve, provided with port A and port B; its port A is connected to the air source;

[0009] Crossbeam lifting cylinder electric control group, used to control the telescoping of the crossbeam lifting cylinder, its air inlet end is connected to port B, and its air outlet end is connected to the rod chamber and the rodless chamber of the crossbeam lifting cylinder;

[0010] Pneumatic control valve, provided with port S, port T, pre-pressure port;

[0011] Wherein,

[0012] The pre-pressure port is connected to port B;

[0013] Port S and port T of the pneumatic control valve are respectively connected to the rod chamber and the rodless chamber of the opening and closing cylinder;

[0014] Opening and closing double-electronic control solenoid valve, provided with port K, port L, port M, port N, port O, opening and closing upper coil, opening and closing lower coil;

[0015] in,

[0016] Port K is connected to the gas source;

[0017] The M port is connected to the S port;

[0018] Port L is connected to the rodless chamber of the opening and closing locking cylinder;

[0019] The N and O ports are connected to external silencers;

[0020] When the air source solenoid valve loses power, port A and port B are connected. When the air source solenoid valve is powered, port A and port B are not connected.

[0021] When the pre-pressure port of the air control valve is under pressure, the S port and the T port are not connected; when there is no pressure on the pre-pressure port of the air control valve, the S port and the T port are connected;

[0022] When the upper coil of the lock is energized and the lower coil of the lock is de-energized, ports K and M are connected, and ports O and L are connected;

[0023] When the upper coil of the open / close lock loses power and the lower coil of the open / close lock is energized, ports N and M are connected, and ports K and L are connected.

[0024] In some embodiments, the crossbeam lifting cylinder electronic control group includes:

[0025] Lifting double electric control solenoid valve, equipped with C port, D port, E port, F port, lifting upper coil, lifting lower coil;

[0026] Lifting single electric control solenoid valve, equipped with G port, H port, I port and J port;

[0027] in,

[0028] Port C is connected to port B;

[0029] Port D and port G are connected;

[0030] The H port is connected to the rodless chamber of the beam lifting cylinder;

[0031] The E port is connected to the rod cavity of the beam lifting cylinder;

[0032] Port I is connected to the rodless chamber of the beam lifting cylinder;

[0033] Ports J and F are connected to external silencers;

[0034] When the upper lifting coil is energized and the lower lifting coil is de-energized, port C and port E are connected, but port C and port D are not connected;

[0035] When the upper lifting coil loses power and the lower lifting coil is energized, ports C and D are connected, and ports E and F are connected;

[0036] When the lifting single electric control solenoid valve is energized, port G and port I are connected; when the lifting single electric control solenoid valve is de-energized, port J and port I are connected, and port G and port H are connected.

[0037] In some embodiments, it further comprises:

[0038] An air inlet, connected to an air source, used to inflate a tire that needs to be cooled and shaped;

[0039] Pneumatic three-way cut-off valve, located between the inflation port and the air source;

[0040] The cut-off valve double electric control solenoid valve is equipped with P port, R port, Q port, cut-off valve upper coil and cut-off valve lower coil;

[0041] Port P is connected to the gas source;

[0042] The R port is connected to the pre-pressure port of the pneumatic three-way cut-off valve;

[0043] Q port external plug;

[0044] The upper coil of the cut-off valve is energized, the lower coil of the cut-off valve is de-energized, and the P port and the R port are connected;

[0045] The upper coil of the cut-off valve loses power, the lower coil of the cut-off valve receives power, and the P and Q ports are connected.

[0046] In some embodiments, an air source filter and an oil mist collector are provided between the P port and the air source.

[0047] In some embodiments, a pressure sensor and a switch valve are provided between the pneumatic three-way shut-off valve and the inflation port.

[0048] In some embodiments, an inflation air source filter, a pressure reducing valve, a proportional valve, and a pressure sensor are provided between the P port and the pneumatic three-way shut-off valve.

[0049] In some embodiments, one-way throttle valves are provided outside the rod chamber and rodless chamber of the beam lifting cylinder and the opening and closing locking cylinder.

[0050] In some embodiments, a silencer port is further provided on the air source solenoid valve, and when the air source solenoid valve is energized, the silencer port and port B are connected.

[0051] Compared with the prior art, the present invention has the following beneficial effects:

[0052] 1. The research and development of the pneumatic control safety system of the rear inflation device has greatly improved the safety performance of the rear inflation device, preventing the tire chuck from falling off when the opening and closing solenoid valve fails, reducing the equipment failure rate and improving production efficiency.

[0053] 2. Specifically, through the switching design of the pneumatic control valve and the double-electric-control solenoid valve for opening and locking, during the lifting and lowering process of the crossbeam lifting cylinder, the opening and locking cylinder is always in the locked state, fundamentally eliminating the occurrence of risk situations.

[0054] 3. The whole process adopts pneumatic control, which has low cost, convenient maintenance, rapid action, short response time, and is more stable and safe. At the same time, it can be effectively combined with the inflation pipeline of the tire, improving the overall controllability of the system.

[0055] 4. Considering that during the telescopic process of the cylinder, the discharge of gas will generate noise, mufflers are set on the corresponding pipelines and openings to reduce the noise pollution generated during the operation of the equipment. Brief Description of the Drawings

[0056] The drawings described herein are used to provide a further understanding of the present invention and constitute a part 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.

[0057] Figure 1 It is a schematic three-dimensional structure diagram of the present invention.

[0058] Brief Description of the Drawings: Air source 1, Crossbeam lifting cylinder 2, Opening and locking cylinder 3, Inflation port 4, Air source solenoid valve 5, Lifting double-electric-control solenoid valve 6, Lifting single-electric-control solenoid valve 7, Opening and locking double-electric-control solenoid valve 8, Pneumatic control valve 9, Cut-off valve double-electric-control solenoid valve 10, First air path 11, Second air path 12, Third air path 13, Fourth air path 14, Fifth air path 15, Sixth air path 16, Seventh air path 17, Eighth air path 18, Ninth air path 19, Tenth air path 20, Eleventh air path 21, Twelfth air path 22, Thirteenth air path 23, Fourteenth air path 24, Fifteenth air path 25, Air source filter 26, Oil mist separator 27, Inflation air source filter 28, Pressure reducing valve 29, Proportional valve 30, Pressure sensor 31, Pneumatic three-way cut-off valve 32, Sixteenth air path 33. Detailed Embodiments

[0059] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be described and explained below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0060] Obviously, the accompanying drawings in the following description are only some examples or embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, the present invention can also be applied to other similar scenarios based on these drawings. In addition, it can also be understood that although the efforts made in such a development process may be complex and lengthy, for those of ordinary skill in the art related to the content disclosed in the present invention, some design, manufacturing or production changes based on the technical content disclosed in the present invention are only conventional technical means and should not be understood as insufficient disclosure of the content of the present invention.

[0061] The mention of "embodiment" in the present invention means that the specific features, structures or characteristics described in connection with the embodiment can be included in at least one embodiment of the present invention. The appearance of this phrase at various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those of ordinary skill in the art explicitly and implicitly understand that the embodiments described in the present invention can be combined with other embodiments without conflict.

[0062] Referring to Figure 1 As shown, a pneumatic control safety system for a post-inflation device of a vulcanizer includes:

[0063] An air source 1, which serves as the power source for all, supplies air to a crossbeam lifting cylinder 2, a locking and unlocking cylinder 3, and an inflation port 4 respectively. An air source filter 26 and an oiler 27 are provided at the air source 1, which respectively play the roles of filtering the air source and lubricating the components in the whole system.

[0064] The air source 1 is connected to the A port of an air source solenoid valve 5 through a first air path 11; the B port of the air source solenoid valve 5 is connected to the C port of a lifting double-electronic control solenoid valve 6 through a fourth air path 14; the D port of the lifting double-electronic control solenoid valve 6 is connected to the G port of a lifting single-electronic control solenoid valve 7 through a sixth air path 16; the H port of the lifting single-electronic control solenoid valve 7 is connected to the rodless cavity of the crossbeam lifting cylinder 2 through a ninth air path 19; the E port of the lifting double-electronic control solenoid valve 6 is connected to the rod cavity of the crossbeam lifting cylinder 2 through a seventh air path 17; the I port of the lifting single-electronic control solenoid valve 7 is connected to the rodless cavity of the crossbeam lifting cylinder 2 through an eighth air path 18. A silencer is externally connected to the F port of the lifting double-electronic control solenoid valve 6 and the J port of the lifting single-electronic control solenoid valve 7.

[0065] The air source 1 is connected to the K port of the double-electromagnetic valve 8 for opening and closing through the third air path 13; the N port and O port of the double-electromagnetic valve 8 for opening and closing are externally connected with silencers; the L port of the double-electromagnetic valve 8 for opening and closing is connected to the rodless cavity of the opening and closing cylinder 3 through the fifteenth air path 25; the M port of the double-electromagnetic valve 8 for opening and closing is connected to the S port of the pneumatic control valve 9 through the tenth air path 20; the T port of the pneumatic control valve 9 is connected to the rod cavity of the opening and closing cylinder 3 through the eleventh air path 21; the pre-pressure port of the pneumatic control valve 9 is connected to the B port of the air source electromagnetic valve 5 through the fifth air path 15.

[0066] The air source 1 is connected to the inflation port 4 through the second air path 12, and is successively provided with an inflation air source filter 28, a pressure reducing valve 29, a proportional valve 30, a pressure sensor 31, and a pneumatic three-way cut-off valve 32; and a cut-off valve double-electromagnetic valve 10 is also provided between the third air path 13 and the pneumatic three-way cut-off valve 32; the third air path 13 is connected to the P port of the cut-off valve double-electromagnetic valve 10; the pre-pressure port of the pneumatic three-way cut-off valve 32 is connected to the R port of the cut-off valve double-electromagnetic valve 10 through the sixteenth air path 33. The Q port of the cut-off valve double-electromagnetic valve 10 is a plug.

[0067] Among them, the air source electromagnetic valve 5 is also provided with a silencing port. When the air source electromagnetic valve 5 is powered on, the silencing port is communicated with the B port; when the air source electromagnetic valve 5 is powered off, the A port and the B port are communicated; through the above design, the coil in the air source electromagnetic valve 5 does not need to be energized for a long time, thereby prolonging its service life and greatly improving the safety performance.

[0068] Among them, the double-electromagnetic valve 8 for opening and closing includes an upper coil for opening and closing and a lower coil for opening and closing; when the upper coil for opening and closing is powered on and the lower coil for opening and closing is powered off, the K port and the M port are communicated, and the O port and the L port are communicated; when the upper coil for opening and closing is powered off and the lower coil for opening and closing is powered on, the N port and the M port are communicated, and the K port and the L port are communicated.

[0069] Among them, when the pre-pressure port of the pneumatic control valve 9 is under pressure, the S port and the T port are not communicated; when the pre-pressure port of the pneumatic control valve 9 has no pressure, the S port and the T port are communicated.

[0070] Among them, the double-electromagnetic valve 6 for lifting includes an upper coil for lifting and a lower coil for lifting; when the upper coil for lifting is powered on and the lower coil for lifting is powered off, the C port and the E port are communicated, and the C port and the D port are not communicated; when the upper coil for lifting is powered off and the lower coil for lifting is powered on, the C port and the D port are communicated, and the E port and the F port are communicated;

[0071] Among them, when the single-electromagnetic valve 7 for lifting is powered on, the G port and the I port are communicated; when the single-electromagnetic valve 7 for lifting is powered off, the J port and the I port are communicated, and the G port and the H port are communicated.

[0072] Among them, when the upper coil of the cut-off valve is powered on and the lower coil of the cut-off valve is powered off, the P port and the R port are conducted; when the upper coil of the cut-off valve is powered off and the lower coil of the cut-off valve is powered on, the P port and the Q port are conducted.

[0073] Its working principle is as follows:

[0074] When the crossbeam lifting cylinder 2 operates, the opening and closing cylinder 3 is always in a locked state.

[0075] When the crossbeam lifting cylinder 2 retracts, the gas flows from the air source 1, the first air path 11, the A port and the B port of the air source solenoid valve 5 (the air source solenoid valve 5 is powered off), the C port and the E port of the lifting double-electronic control solenoid valve 6 (the upper lifting coil is powered on and the lower lifting coil is powered off), and the seventh air path 17 into the rod chamber of the crossbeam lifting cylinder 2. The gas in the rodless chamber of the crossbeam lifting cylinder 2 is discharged from the eighth air path 18, the I port and the J port of the lifting single-electronic control solenoid valve 7 (the lifting single-electronic control solenoid valve 7 is powered off). At the same time, because the upper lifting coil is powered on and the lower lifting coil is powered off, the connection end of the D port is a plug, so the gas in the rodless chamber of the crossbeam lifting cylinder 2 can only be discharged from the J port.

[0076] When the crossbeam lifting cylinder 2 extends, the gas flows from the air source 1, the first air path 11, the A port and the B port of the air source solenoid valve 5 (the air source solenoid valve 5 is powered off), the C port and the D port of the lifting double-electronic control solenoid valve 6 (the upper lifting coil is powered off and the lower lifting coil is powered on), the sixth air path 16, the G port and the I port of the lifting single-electronic control solenoid valve 7 (the lifting single-electronic control solenoid valve 7 is powered on), and the eighth air path 18 into the rodless chamber of the crossbeam lifting cylinder 2; the gas in the rod chamber of the crossbeam lifting cylinder 2 is discharged through the seventh air path 17, the E port and the F port of the lifting double-electronic control solenoid valve 6 (the upper lifting coil is powered off and the lower lifting coil is powered on).

[0077] The above process is the control process loop of the crossbeam lifting cylinder 2. In the above process, since the A port and the B port of the air source solenoid valve 5 are always conducted (the air source solenoid valve 5 is powered off), therefore, part of the gas will enter the pre-pressure port of the air control valve 9 through the fifth air path 15, so that the connection ends of the T port and the S port are both blocked, so that the S port and the T port of the air control valve 9 are not conducted. Since the T port of the air control valve 9 is connected to the rod chamber of the opening and closing cylinder 3 through the eleventh air path 21; so no matter what state the opening and closing double-electronic control solenoid valve 8 is in, the gas in the rod chamber of the opening and closing cylinder 3 cannot be discharged, and no gas will enter the rod chamber of the opening and closing cylinder 3, so it is always in a locked state.

[0078] When the opening and closing double-electronic control solenoid valve 8 needs to be opened and closed, the air source solenoid valve 5 is powered on, and the A port and the B port are not conducted. At this time, the pre-pressure port of the air control valve 9 has no pressure, so that the S port and the T port of the air control valve 9 are conducted.

[0079] When the opening and closing cylinder 3 retracts, gas flows from the gas source 1, the second gas path 12, the third gas path 13, the K port and M port of the opening and closing double-electronic control solenoid valve 8 (the upper opening and closing coil is energized, the lower opening and closing coil is de-energized), the tenth gas path 20, the S port and T port of the pneumatic control valve 9, and the eleventh gas path 21 into the rod chamber of the opening and closing cylinder 3. The gas in the rodless chamber of the opening and closing cylinder 3 is discharged from the fifteenth gas path 25, the L port and O port of the opening and closing double-electronic control solenoid valve 8 (the upper opening and closing coil is energized, the lower opening and closing coil is de-energized), and the silencer.

[0080] When the opening and closing cylinder 3 extends, gas flows from the gas source 1, the second gas path 12, the third gas path 13, the K port and L port of the opening and closing double-electronic control solenoid valve 8 are conducted (the upper opening and closing coil is de-energized, the lower opening and closing coil is energized), and the fifteenth gas path 25 into the rodless chamber of the opening and closing cylinder 3. The gas in the rod chamber of the opening and closing cylinder 3 is discharged from the eleventh gas path 21, the T port and S port of the pneumatic control valve 9, the tenth gas path 20, the M port and N port of the opening and closing double-electronic control solenoid valve 8 (the upper opening and closing coil is de-energized, the lower opening and closing coil is energized), and the silencer.

[0081] When inflation operation is required, gas flows from the gas source 1 through the gas source filter 26, the oiler 27, the inflation gas source filter 28, the pressure reducing valve 29, the proportional valve 30, the pressure sensor 31, and the pneumatic three-way cut-off valve 32 to the inflation port 4 for inflation.

[0082] Among them, the switch of the pneumatic three-way cut-off valve 32 is controlled by the cut-off valve double-electronic control solenoid valve 10.

[0083] When the upper cut-off valve coil is energized and the lower cut-off valve coil is de-energized, the P port and R port are conducted; there is air pressure at the pre-pressure port of the pneumatic three-way cut-off valve 32, so that the pneumatic three-way cut-off valve 32 is in the open state.

[0084] When the upper cut-off valve coil is de-energized and the lower cut-off valve coil is energized, the P port and Q port are conducted. The Q port is a plug, so there is no air pressure at the pre-pressure port of the pneumatic three-way cut-off valve 32, so that the pneumatic three-way cut-off valve 32 is in the closed state.

[0085] Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pneumatic control safety system for the post-inflation device of a vulcanizer, characterized in that, it includes: a gas source, a crossbeam lifting cylinder, and an unlocking cylinder; a gas source solenoid valve, provided with port A and port B; port A is connected to the gas source; a crossbeam lifting cylinder electric control group, used to control the telescoping of the crossbeam lifting cylinder, its air inlet end is connected to port B, and its air outlet end is connected to the rod chamber and the non-rod chamber of the crossbeam lifting cylinder; a pneumatic control valve, provided with port S, port T, and a pre-pressure port; wherein, the pre-pressure port is connected to port B; port S and port T of the pneumatic control valve are respectively connected to the rod chamber and the non-rod chamber of the unlocking cylinder; an unlocking double-electronic control solenoid valve, provided with port K, port L, port M, port N, port O, an unlocking upper coil, and an unlocking lower coil; wherein, port K is connected to the gas source; port M is connected to port S; port L is connected to the non-rod chamber of the unlocking cylinder; ports N and O are externally connected with silencers; when the gas source solenoid valve loses power, port A and port B are conducted; when the gas source solenoid valve is powered on, port A and port B are not conducted; when the pre-pressure port of the pneumatic control valve is under pressure, port S and port T are not conducted; when the pre-pressure port of the pneumatic control valve has no pressure, port S and port T are conducted; when the unlocking upper coil is powered on and the unlocking lower coil loses power, port K and port M are conducted, and port O and port L are conducted; when the unlocking upper coil loses power and the unlocking lower coil is powered on, port N and port M are conducted, and port K and port L are conducted; the crossbeam lifting cylinder electric control group includes; a lifting double-electronic control solenoid valve, provided with port C, port D, port E, port F, a lifting upper coil, and a lifting lower coil; a lifting single-electronic control solenoid valve, provided with port G, port H, port I, port J; wherein, port C is connected to port B; port D is connected to port G; port H is connected to the non-rod chamber of the crossbeam lifting cylinder; port E is connected to the rod chamber of the crossbeam lifting cylinder; port I is connected to the non-rod chamber of the crossbeam lifting cylinder; when the lifting upper coil is powered on and the lifting lower coil loses power, port C and port E are conducted, and port C and port D are not conducted; when the lifting upper coil loses power and the lifting lower coil is powered on, port C and port D are conducted, and port E and port F are conducted; when the lifting single-electronic control solenoid valve is powered on, port G and port I are conducted; when the lifting single-electronic control solenoid valve loses power, port J and port I are conducted, and port G and port H are conducted.

2. The pneumatic control safety system for the post-inflation device of a vulcanizer according to claim 1, characterized in that, ports J and F are externally connected with silencers.

3. The pneumatic control safety system for the post-inflation device of a vulcanizer according to claim 1, characterized in that, it further includes: an inflation port, connected to the gas source, used to inflate the tire that needs to be cooled and shaped; a pneumatic three-way cut-off valve, arranged between the inflation port and the gas source; a cut-off valve double-electronic control solenoid valve, provided with port P, port R, port Q, a cut-off valve upper coil, and a cut-off valve lower coil; port P is connected to the gas source; port R is connected to the pre-pressure port of the pneumatic three-way cut-off valve; port Q is externally connected with a plug; when the cut-off valve upper coil is powered on and the cut-off valve lower coil loses power, port P and port R are conducted; when the cut-off valve upper coil loses power and the cut-off valve lower coil is powered on, port P and port Q are conducted.

4. The pneumatic control safety system for the post-inflation device of a vulcanizer according to claim 1, characterized in that, a gas source filter and an oiler are provided between port P and the gas source.

5. The pneumatic control safety system of the post-inflation device of the vulcanizer according to claim 3, characterized in that, a pressure sensor and a switching valve are provided between the pneumatic three-way cut-off valve and the inflation port.

6. The pneumatic control safety system of the post-inflation device of the vulcanizer according to claim 3, characterized in that, an inflation air source filter, a pressure reducing valve, a proportional valve and a pressure sensor are provided between the P port and the pneumatic three-way cut-off valve.

7. The pneumatic control safety system of the post-inflation device of the vulcanizer according to claim 1, characterized in that, one-way throttle valves are provided outside the rod chambers and non-rod chambers of the crossbeam lifting cylinder and the opening / closing lock cylinder.

8. The pneumatic control safety system of the post-inflation device of the vulcanizer according to claim 1, characterized in that, a silencing port is further provided on the air source solenoid valve, and when the air source solenoid valve is energized, the silencing port is communicated with the B port.

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