Air spring air bag machine external cooling device and cooling method

Abstract

An air spring air bag machine external cooling device and a cooling method, the machine external cooling device includes clamping mechanism, lifting mechanism and air pipe joint, the upper end of the clamping mechanism is connected with the lower end of the lifting mechanism, the lower end of the clamping mechanism is provided with mounting hole, the mounting hole is provided with air pipe joint; The upper end of the inner side of the air bag is attached to the outer side of the upper end of the clamping mechanism, the lower end of the inner side of the air bag is attached to the outer side of the lower end of the clamping mechanism, the clamping mechanism, the air pipe joint and the air bag form a cavity. The cavity is inflated by connecting the air pipe joint with the air pipe of the inflation equipment, and the air bag is inflated and cooled externally. This method releases the equipment time consumed by the internal cooling of the vulcanizing machine, improves the utilization rate of the equipment. At the same time, the use of compacted air after the machine is inflated, without energy consumption, so that the manufacturing cost of the product can be reduced to a certain extent.

Description

Technical Field

[0001] The invention relates to a process in the manufacturing process of an air spring, and in particular to a cooling device and a cooling method for an air spring airbag. Background Art

[0002] With the rapid development of the rail transit vehicle industry both domestically and internationally in recent years, rail transit vehicles have gained widespread global application due to their high carrying capacity. Air springs, with their advantages of high load capacity, stable natural frequency, strong deformation resistance, and the ability to maintain constant vehicle height through coordinated control devices, are widely used in mainline passenger cars, EMUs, and urban rail vehicles. At the same time, facing fierce market competition, to ensure market share, air spring manufacturers must effectively control product costs while ensuring both quality and quantity. The current direction of development for these companies is to pursue efficient, high-quality, and low-cost production methods.

[0003] The air spring airbag is an important load-bearing component and core part of the air spring system. Nylon cord is used as the skeleton material. The vulcanization of the airbag is an important manufacturing process that must be followed. At present, after the vulcanization process of the airbag is completed, in order to ensure the stable shrinkage performance of the nylon cord, the internal skeleton material of the airbag, the airbag needs to be in the mold, and the superheated water is evacuated from the internal capsule, and then circulating cold water is introduced to circulate the cold water in the machine for a period of time. The disadvantage of the cooling process in the machine is that it will take up the machine utilization rate in terms of time. At the same time, the cold water circulation will lose the temperature of the vulcanization process, and subsequent continuous production will consume more energy.

[0004] Therefore, it is of great significance for air spring manufacturers to improve the production efficiency of air spring airbags and reduce production costs under the premise of existing production process equipment. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: how to move the airbag cooling currently completed in the vulcanizer to be completed outside the vulcanizer.

[0006] In response to the above problems, the technical solution proposed in the present invention is: an external cooling device for an air spring airbag, the external cooling device includes a clamping mechanism, a lifting mechanism and an air pipe joint, the upper end of the clamping mechanism is connected to the lower end of the lifting mechanism, the lower end of the clamping mechanism is provided with a mounting hole, and an air pipe joint is provided at the mounting hole; the upper end of the inner side of the airbag is fitted with the outer side of the upper end of the clamping mechanism, and the lower end of the inner side of the airbag is fitted with the outer side of the lower end of the clamping mechanism, and the clamping mechanism, the air pipe joint and the airbag form a cavity.

[0007] Preferably, the clamping mechanism includes an upper chuck, which is fixedly connected to the lower end of the lifting mechanism. An annular groove is provided on the outer side of the lower end of the upper chuck. The annular groove of the upper chuck is surrounded by an upper limit surface and an upper inclined limit surface. The upper limit surface is a horizontal annular plane, and the upper inclined limit surface is an inclined annular inclined surface, and the upper inclined limit surface is inclined with the lower end inclined toward the middle of the upper chuck.

[0008] Preferably, the clamping mechanism also includes a lower chuck with a through mounting hole in the middle of the lower chuck, the air pipe joint is arranged at the mounting hole, and an annular groove is provided on the outer side of the upper end of the lower chuck. The annular groove of the lower chuck is surrounded by a lower limit surface and a lower inclined limit surface. The lower limit surface is a horizontal annular plane, and the lower inclined limit surface is an inclined annular inclined surface, and the upper end of the lower inclined limit surface is inclined toward the middle of the lower chuck.

[0009] Preferably, the lifting mechanism includes a threaded rod and a support frame, a threaded hole is opened at the upper end of the support frame, an external thread is provided at the upper end of the threaded rod, the upper end of the threaded rod is threadedly connected to the upper end of the support frame, and the lower end of the threaded rod is fixedly connected to the upper end of the upper chuck.

[0010] Preferably, the support frame includes a cross bar, a wall panel and a bottom plate, the lower end of the wall panel is fixedly connected to the bottom plate, the cross bar is rectangular, the two ends of the cross bar are fixedly connected to the upper end of the wall panel, a through mounting hole is opened on the bottom plate, and the air pipe joint is arranged at the said mounting hole.

[0011] Preferably, the trachea joint includes a nozzle port and a nozzle head. The trachea joint is a rotating body. The nozzle port and the nozzle head are seamlessly connected into a whole. The nozzle port and the nozzle head are provided with a through air hole, and a valve is provided in the air hole.

[0012] Preferably, the air nozzle opening is a hollow circular tube, and bolt holes are provided on the air nozzle head and the base plate, and the bolts pass through the bolt holes to fix the air pipe joint to the base plate; the upper end of the air nozzle head extends outward to form an annular pressure ring, the bottom of the pressure ring fits with the top of the inner side of the lower chuck, and the lower end of the air nozzle head passes through the mounting hole opened on the lower chuck, and the air nozzle head and the lower chuck are connected by interference fit.

[0013] A method for cooling an air spring airbag outside a machine comprises the following steps: arranging a clamping mechanism, a lifting mechanism, and an air pipe joint outside a vulcanizer; controlling the upper end of the clamping mechanism to move vertically by lifting; and arranging the air pipe joint at the lower end of the clamping mechanism; after the positive vulcanization time of the airbag is completed, the airbag is moved from the vulcanizer to the clamping mechanism, so that the clamping mechanism, the air pipe joint, and the airbag together form a closed cavity; and inflating the cavity by connecting the air pipe of an inflation device to the air pipe joint, so that the airbag is cooled outside the machine in the inflated state.

[0014] Preferably, an upper chuck and a lower chuck separated from each other are provided in the clamping mechanism, and annular grooves matching the shapes of the upper and lower sub-mouths of the airbag are provided on the outer sides of the upper chuck and the lower chuck respectively; a threaded rod and a cross bar with a threaded hole are provided in the lifting mechanism, the upper end of the threaded rod is threadedly connected to the cross bar, the lower end of the threaded rod is fixedly connected to the upper chuck, and the upper chuck is moved vertically by rotating the threaded rod; a through air hole is provided on the trachea joint, and a valve that can open or close the air hole is provided in the air hole.

[0015] Preferably, the method comprises the following steps:

[0016] A. Set the air spring airbag cooling time to cancel on the vulcanizing machine;

[0017] B. Turn the threaded rod of the external cooling device to adjust the height of the upper chuck and put the air pipe of the inflation device onto the air pipe connector;

[0018] C. After the airbag vulcanization time is over, remove the airbag from the mold and clean the rubber flash at the airbag outlet as soon as possible;

[0019] D. Within 5 minutes after the curing process is completed, place the cleaned airbag on the external cooling device in the correct position and rotate the threaded rod to move the upper chuck downward so that the upper and lower openings of the airbag fit tightly with the annular grooves of the upper and lower chucks respectively to ensure airtightness.

[0020] E. Open the valve of the air pipe joint and start the inflation equipment to inflate the air bag installed on the external cooling device. After inflation is completed, close the valve of the air pipe joint and cool the air bag for 30 minutes;

[0021] F. After cooling is complete, open the valve of the air pipe joint to release the pressure and restore the airbag to a free state. Turn the threaded rod to move the upper chuck upward to separate the upper chuck from the airbag. Then manually remove the airbag from the lower chuck.

[0022] The beneficial technical effects of the present invention are:

[0023] After the airbag completes the positive vulcanization process in the vulcanizer, it is placed in a special external cooling device for cooling within the specified time of the process. The upper and lower ports of the airbag are sealed with special tooling, and compressed air with a certain pressure is filled inside as a cooling medium. Within the set height range, the airbag is allowed to cool naturally outside the vulcanizer. This method releases the equipment time consumed by the internal cooling of the vulcanizer and improves the utilization rate of the equipment.

[0024] This technical solution effectively moves the airbag to an off-board cooling device during the post-curing cooling phase. With a constant supply of compressed air, the airbag cools naturally while the cord remains stretched within the machine, effectively reducing the curing machine's operating time for individual products and contributing to improved production efficiency. Furthermore, off-board post-inflation utilizes compressed air, eliminating energy consumption and thus reducing manufacturing costs.

[0025] After the airbag is filled with a certain amount of compressed air, it can ensure the same cooling effect as the original on-machine cooling, ensuring product performance while improving production efficiency. By designing a sealing tool for the sub-mouth on the off-machine post-inflation equipment, the airbag's airtightness is guaranteed, and the appearance and sub-mouth sealing performance of the airbag can be inspected to a certain extent, improving the efficiency of product self-inspection. Considering the certain risks associated with the compressed air filling, a protective area is enclosed by bottom and wall panels to eliminate related safety risks during the off-machine post-cooling operation.

[0026] Through optimized tooling design, the airbag post-inflation equipment can be applied to all current airbag models for off-press post-inflation, achieving full coverage across the entire airbag product range and improving overall production line execution. Off-press post-cooling of the airbag effectively reduces the curing press utilization rate for each airbag product by replacing the 15-minute on-press cooling period after the initial curing process with an off-press cooling process. This significantly increases the curing press's productivity and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the overall structure of Example 1;

[0028] Figure 2 It is an enlarged structural diagram of the upper chuck, the lower chuck and the trachea joint;

[0029] Figure 3 It is an enlarged schematic diagram of the local structure of the airbag;

[0030] In the figure: upper chuck 1, upper limit surface 11, upper inclined limit surface 12, lower chuck 2, lower limit surface 21, lower inclined limit surface 22, airbag 3, upper sub-mouth 31, upper end surface 311, upper inclined surface 312, lower sub-mouth 32, lower end surface 321, lower inclined surface 322, threaded rod 4, cross bar 51, wall panel 52, bottom plate 53, air pipe joint 6, air nozzle port 61, air nozzle head 62, pressure ring 621, air hole 63, valve 64, base 7, cavity 8. DETAILED DESCRIPTION

[0031] The present invention will be further described below with reference to the embodiments and accompanying drawings: Example 1

[0032] like Figure 1 and Figure 2 As shown, the off-machine cooling device includes a clamping mechanism, a lifting mechanism and an air pipe joint 6, wherein the clamping mechanism includes an upper chuck 1 and a lower chuck 2, the upper end of the clamping mechanism is the upper chuck 1, the lower end of the clamping mechanism is the lower chuck 2, and the upper chuck 1 and the lower chuck 2 are separated from each other. The lifting mechanism includes a threaded rod 4 and a support frame, and the support frame includes a cross bar 51, a wall plate 52 and a bottom plate 53. The upper chuck 1 at the upper end of the clamping mechanism is connected to the lower end of the threaded rod 4 of the lifting mechanism, the cross bar 51 at the upper end of the support frame is provided with a threaded hole, the cross bar 51 is in the shape of a rectangular parallelepiped, and the upper end of the threaded rod 4 is provided with an external thread. The upper end of the threaded rod 4 is threadedly connected to the cross bar 51, and the threaded rod 4 is rotated with a tool to allow the threaded rod 4 to move upward or downward, thereby driving the upper chuck 1 to rotate and move downward or upward.

[0033] The tracheal connector 6 comprises a nozzle opening 61 and a nozzle head 62. The entire tracheal connector 6 is a rotating body. The nozzle opening 61 is a hollow, circular tube, and the two nozzle heads 62 are seamlessly connected to form a single unit. The lower end of the nozzle head 62 is also hollow, circular, and the upper end of the nozzle head 62 extends outward to form a flat, annular pressure ring 621. A central air hole 63, connecting the nozzle opening 61 and the nozzle head 62, is provided with a valve 64.

[0034] The lower chuck 2 has a through-hole through which the lower end of the air nozzle head 62 passes, forming an interference fit with the lower chuck 2. The base plate 53 also has a through-hole through which the air nozzle opening 61 passes, forming an interference fit with the base plate 53. Both the air nozzle head 62 and the base plate 53 have bolt holes through which bolts pass to securely connect the air pipe connector 6 to the base plate 53. Tightening these bolts ensures that the bottom of the pressure ring 621 fits tightly against the top of the inner side of the lower chuck 2, and the bottom of the air nozzle head 62 fits tightly against the top of the base plate 53.

[0035] The support frame includes a crossbar 51, a wall panel 52, and a base panel 53. The lower end of the wall panel 52 is fixedly connected to the base panel 53. The crossbar 51 is rectangular, and its ends are fixedly connected to the upper end of the wall panel 52. In this embodiment, the base panel 53 is a thick circular tube with a mounting hole in the middle, while the wall panel 52 is a thin circular tube with a large central cavity 8. The wall panel 52 encloses the entire airbag 3 in the cavity 8, providing a protective function. The wall panel 52 also has a door that can be opened and closed. When the door is opened, the airbag 3 can be easily placed between the upper chuck 1 and the lower chuck 2, and the cooled airbag 3 can also be easily removed. Closing the door to inflate the airbag 3 provides a protective function.

[0036] like Figure 1 、 Figure 2 and Figure 3As shown, the outer side of the lower end of the upper chuck 1 is provided with an annular groove, the annular groove of the upper chuck 1 is surrounded by an upper limiting surface 11 and an upper inclined limiting surface 12, the upper limiting surface 11 is a horizontal annular plane, the upper inclined limiting surface 12 is an inclined annular plane, and the upper inclined limiting surface 12 is inclined towards the middle of the upper chuck 1 at the lower end. The outer side of the upper end of the lower chuck 2 is also provided with an annular groove, the annular groove of the lower chuck 2 is surrounded by a lower limiting surface 21 and a lower inclined limiting surface 22, the lower limiting surface 21 is a horizontal annular plane, the lower inclined limiting surface 22 is an inclined annular plane, and the lower inclined limiting surface 22 is inclined towards the middle of the lower chuck 2 at the upper end.

[0037] The inner side of the upper sub-port 31 of the air bag 3 is provided with an upper end surface 311 and an upper inclined surface 312, and the shapes of the upper end surface 311 and the upper inclined surface 312 match the shape of the annular groove on the outer side of the upper chuck 1. The inner side of the lower sub-port 32 of the air bag 3 is provided with a lower end surface 321 and a lower inclined surface 322, and the shapes of the lower end surface 321 and the lower inclined surface 322 match the shape of the annular groove on the outer side of the lower chuck 2. When the upper sub-port 31 and the lower sub-port 32 of the annular hollow air bag 3 are respectively sleeved on the annular grooves of the upper chuck 1 and the lower chuck 2, the upper end surface 311 and the upper inclined surface 312 of the upper sub-port 31 of the air bag 3 respectively abut against the upper limiting surface 11 and the upper inclined limiting surface 12 of the upper chuck 1; the lower end surface 321 and the lower inclined surface 322 of the lower sub-port 32 of the air bag 3 respectively abut against the lower limiting surface 21 and the lower inclined limiting surface 22 of the lower chuck 2.

[0038] The specific implementation steps of the embodiment are as follows:

[0039] A. Set the cooling time of the air spring air bag 3 on the vulcanizing machine to be cancelled;

[0040] B. Rotate the threaded rod 4 of the external cooling device to adjust the height of the upper chuck 1, and sleeve the air pipe of the inflation equipment on the air pipe joint 6;

[0041] C. After the normal vulcanization time of the air bag 3 ends, take the air bag 3 out of the mold, and clean the rubber flash at the sub-port of the air bag 3 as soon as possible;

[0042] D. Within 5 minutes after the normal vulcanization is completed, place the air bag 3 with the cleaned flash on the external cooling device in the correct way, and rotate the threaded rod 4 to move the upper chuck 1 downward, so that the upper sub-port 31 and the lower sub-port 32 of the air bag 3 are tightly matched with the annular grooves of the upper chuck 1 and the lower chuck 2 respectively, and the air tightness is ensured;

[0043] E. Open the valve 64 of the air pipe joint 6, start the inflation equipment to inflate the air bag 3 installed on the external cooling device, after the inflation is completed, close the valve 64 of the air pipe joint 6, and cool the air bag 3 for 30 minutes;

[0044] F. After cooling is complete, open valve 64 of air pipe connector 6 to release the pressure, allowing airbag 3 to return to a free state. Rotate threaded rod 4 to move upper chuck 1 upward, separating it from airbag 3. Manually remove airbag 3 from lower chuck 2.

[0045] Obviously, without departing from the principles of the present invention, several improvements or modifications should be considered as within the scope of protection of the present invention.

Claims

1. An air spring airbag external cooling device, characterized in that: The external cooling device includes a clamping mechanism, a lifting mechanism and an air pipe joint. The upper end of the clamping mechanism is connected to the lower end of the lifting mechanism. The lower end of the clamping mechanism is provided with a mounting hole, and an air pipe joint is provided at the mounting hole. The upper end of the inner side of the airbag is fitted with the outer side of the upper end of the clamping mechanism, and the lower end of the inner side of the airbag is fitted with the outer side of the lower end of the clamping mechanism. The clamping mechanism, the air pipe joint and the airbag form a cavity. The clamping mechanism includes an upper chuck, which is fixedly connected to the lower end of the lifting mechanism. The outer side of the lower end of the upper chuck is provided with an annular groove. The annular groove is surrounded by an upper limit surface and an upper inclined limit surface, the upper limit surface is a horizontal annular plane, the upper inclined limit surface is an inclined annular inclined surface, and the upper inclined limit surface is inclined toward the middle of the upper chuck at the lower end; the clamping mechanism also includes a lower chuck, a through mounting hole is opened in the middle of the lower chuck, the trachea joint is arranged at the mounting hole, an annular groove is opened on the outer side of the upper end of the lower chuck, the annular groove of the lower chuck is surrounded by a lower limit surface and a lower inclined limit surface, the lower limit surface is a horizontal annular plane, the lower inclined limit surface is an inclined annular inclined surface, and the lower inclined limit The upper end of the air nozzle is inclined toward the middle of the lower chuck; the air pipe joint includes an air nozzle port and an air nozzle head, the air pipe joint is a rotating body, the air nozzle port and the air nozzle head are seamlessly connected into a whole, and the air nozzle port and the air nozzle head are provided with a through air hole, and a valve is provided in the air hole; the air nozzle port is a hollow circular tube, and bolt holes are provided on the air nozzle head and the base plate, and the bolts pass through the bolt holes to fix the air pipe joint to the base plate; the upper end of the air nozzle head extends outward to form an annular pressure ring, the bottom of the pressure ring fits with the top of the inner side of the lower chuck, and the lower end of the air nozzle head is fixed to the base plate. The end passes through the mounting hole opened on the lower chuck, and the nozzle head is connected to the lower chuck by interference fit; the inner side of the upper sub-port of the airbag is provided with an upper end face and an upper inclined surface, and the inner side of the lower sub-port of the airbag is provided with a lower end face and a lower inclined surface. When the upper sub-port and the lower sub-port of the annular hollow airbag are respectively sleeved on the annular grooves of the upper chuck and the lower chuck, the upper end face and the upper inclined surface of the upper sub-port of the airbag are respectively fitted with the upper limit surface and the upper inclined limit surface of the upper chuck; the lower end face and the lower inclined surface of the lower sub-port of the airbag are respectively fitted with the lower limit surface and the lower inclined limit surface of the lower chuck.

2. The air spring airbag external cooling device according to claim 1, characterized in that: The lifting mechanism includes a threaded rod and a support frame. The upper end of the support frame is provided with a threaded hole. The upper end of the threaded rod is provided with an external thread. The upper end of the threaded rod is threadedly connected to the upper end of the support frame, and the lower end of the threaded rod is fixedly connected to the upper end of the upper chuck.

3. The air spring airbag external cooling device according to claim 2, characterized in that: The support frame includes a cross bar, a wall panel and a bottom plate. The lower end of the wall panel is fixedly connected to the bottom plate. The cross bar is a rectangular parallelepiped. The two ends of the cross bar are fixedly connected to the upper end of the wall panel. A through mounting hole is opened on the bottom plate, and the air pipe joint is arranged at the mounting hole.

4. An off-machine cooling method for an air spring airbag off-machine cooling device according to claim 1, characterized in that: The invention provides a clamping mechanism, a lifting mechanism and an air pipe joint outside the vulcanizer, uses the lifting mechanism to control the vertical movement of the upper end of the clamping mechanism, and provides an air pipe joint at the lower end of the clamping mechanism; after the positive vulcanization time of the airbag is over, the airbag is moved from the vulcanizer to the clamping mechanism, so that the clamping mechanism, the air pipe joint and the airbag together form a closed cavity, and the air pipe of the inflation device is connected to the air pipe joint to inflate the cavity, and the airbag is cooled outside the machine in the inflated state.

5. The external cooling method according to claim 4, characterized in that: An upper chuck and a lower chuck separated from each other are provided in the clamping mechanism, and annular grooves matching the shapes of the upper and lower sub-mouths of the airbag are provided on the outer sides of the upper chuck and the lower chuck respectively; a threaded rod and a cross bar with a threaded hole are provided in the lifting mechanism, the upper end of the threaded rod is threadedly connected to the cross bar, and the lower end of the threaded rod is fixedly connected to the upper chuck, and the upper chuck is moved vertically by rotating the threaded rod; a through air hole is provided on the trachea joint, and a valve that can open or close the air hole is provided in the air hole.

6. The external cooling method according to claim 5, characterized in that: The following steps are involved: A. Set the cooling time of the air spring airbag external cooling device to cancel on the vulcanizer; B. Turn the threaded rod of the external cooling device to adjust the height of the upper chuck and put the air pipe of the inflation device onto the air pipe connector; C. After the airbag vulcanization time is over, remove the airbag from the mold and clean the rubber flash at the airbag outlet as soon as possible; D. Within 5 minutes after the curing process is completed, place the cleaned airbag on the external cooling device in the correct position and rotate the threaded rod to move the upper chuck downward so that the upper and lower openings of the airbag fit tightly with the annular grooves of the upper and lower chucks respectively to ensure airtightness. E. Open the valve of the air pipe joint and start the inflation equipment to inflate the air bag installed on the external cooling device. After inflation is completed, close the valve of the air pipe joint and cool the air bag for 30 minutes; F. After cooling is complete, open the valve of the air pipe joint to release the pressure and restore the airbag to a free state. Turn the threaded rod to move the upper chuck upward to separate the upper chuck from the airbag. Then manually remove the airbag from the lower chuck.

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