High-temperature-resistant and durable-pressure-resistant test device special for curing bladder

Abstract

The utility model relates to the field of vulcanization molds, and discloses a test device special for high-temperature resistance and endurance pressure test of a vulcanization capsule, which comprises a hydraulic oil source, a hydraulic oil cylinder, a device frame and the vulcanization capsule to be tested, and an endurance test space is formed between a rack upper frame and a rack base of the device frame. A high-low temperature environment box is mounted on the rack base, and a curing bladder to be tested is arranged in the high-low temperature environment box; the upper end and the lower end of the curing bladder to be tested are respectively connected with an upper end bearing seat and a lower end bearing seat; the hydraulic oil cylinder is provided with a lifting driving rod, the end part of the lifting driving rod is detachably connected with the upper-end bearing seat, a force sensor is mounted at the bottom of the lower-end bearing seat, and the lower-end bearing seat is also provided with an air inlet channel communicated with an inner cavity of the curing bladder to be tested; the hydraulic oil source is hermetically communicated with an oil path inlet of the hydraulic oil cylinder. According to the utility model, various tests of the curing bladder to be tested are realized, so that the tested curing bladder can better realize air spring bladder skin vulcanization treatment.

Description

Technical Field

[0001] This utility model relates to the field of vulcanization molds for air spring bladders, and in particular to a test device specifically for testing the high temperature resistance and durability of vulcanized bladders. Background Technology

[0002] An air spring is a spring that uses compressed air, which is filled into a sealed container, to achieve its elastic function. The key component, the air spring bladder, primarily stores this compressed air. The air spring bladder needs to be molded and vulcanized under specified time, temperature, and pressure conditions to achieve its intended properties. Currently known vulcanization processes are divided into two types: vulcanization with and without a vulcanizing bladder. The main function of the vulcanizing bladder is to expand under the pressure of high-pressure steam or nitrogen, as required by the process. The semi-finished air spring bladder is placed over the vulcanizing bladder, evenly expanding it to fit tightly against the inner wall of the mold, ensuring uniform and dense wall thickness and preventing defects such as air pockets. Simultaneously, the internal steam temperature is conducted to the inner wall of the air spring, while the outer wall temperature is conducted through the inner wall of the mold. Through the heat conduction between the mold and the vulcanizing bladder, the air spring bladder is vulcanized at the required temperature, thus achieving the corresponding performance requirements. The main component of vulcanized bladders is butyl rubber. According to process requirements, vulcanized bladders must undergo high-temperature resistance tests exceeding 180℃ and long-term elastic compression tests before they can be used for air spring bladder vulcanization. Without these tests, if the vulcanized bladders fail to meet the requirements for high-temperature resistance and durability, their service life will be significantly reduced. This will also adversely affect the vulcanization process of the air spring bladder semi-finished products, causing the vulcanized bladders to break directly under high temperature or high-pressure elastic compression. Currently, there are no corresponding testing facilities for the durability and high-temperature resistance tests of vulcanized bladders. This leads to blind production of air spring bladders, resulting in damaged vulcanized bladders or failure to meet vulcanization requirements, leading to low yield rates. Furthermore, substandard air spring bladder semi-finished products can cause batch quality problems, resulting in material waste and impacting production schedules. Utility Model Content

[0003] The purpose of this invention is to solve the technical problems pointed out in the background art and to provide a test device for high temperature resistance and durability pressure resistance testing of vulcanized capsules. The device is equipped with a hydraulic cylinder and loads the vulcanized capsule to be tested through a lifting drive rod, so as to realize the durability pressure test of the sealed vulcanized capsule to be tested. Moreover, the vulcanized capsule to be tested is placed inside a high and low temperature environment chamber and can be tested for high temperature resistance. This allows the vulcanized capsule after testing to better realize the vulcanization treatment of air spring bladder shell semi-finished products and improve the production efficiency of air spring bladder shell semi-finished products.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A testing device specifically designed for high-temperature and durability pressure testing of vulcanized capsules includes a hydraulic oil source, a hydraulic cylinder, a device frame, and a vulcanized capsule to be tested. The device frame includes an upper frame and a base, which are arranged vertically. Several support rods are fixedly connected between the upper frame and the base, forming a durability testing space. A high-low temperature environment chamber located within the durability testing space is installed on the base, and the vulcanized capsule to be tested is placed in the high-low temperature environment chamber. An upper support seat is sealed to the upper end of the vulcanized capsule, and a lower support seat is sealed to the lower end of the capsule. The hydraulic cylinder is fixed to the upper frame and has a lifting drive rod that moves through the upper frame. The end of the lifting drive rod is detachably connected to the upper support seat. A force sensor is installed at the bottom of the lower support seat, and the lower support seat also has an air inlet communicating with the internal cavity of the vulcanized capsule. The hydraulic oil source and the oil inlet of the hydraulic cylinder are sealed together.

[0006] To better realize this utility model, the air intake channel is sealed and connected to an air intake pipe, and the air intake pipe is sealed and connected to a gas source tank with gas pressure measurement.

[0007] Preferably, the top of the test bench base has a test bench base plate, and the interior of the high and low temperature environment chamber is equipped with an inverted U-shaped capsule limiting frame. The inverted U-shaped capsule limiting frame includes an upper limiting plate and side limiting plates fixed on the left and right sides of the upper limiting plate. The upper limiting plate, the test bench base plate, and the side limiting plates form a test limiting space, and the vulcanized capsule to be tested is centrally located within the test limiting space. The end of the lifting drive rod moves up and down through the upper limiting plate.

[0008] Preferably, the upper support seat is composed of an upper outer pressure plate seat and an upper inner pressure plate connected by bolts, and the end of the lifting drive rod is detachably connected to the upper outer pressure plate seat; the upper end of the vulcanized capsule to be tested has a capsule upper end side, the upper outer pressure plate seat has a sealing groove A, and the upper inner pressure plate has a sealing protrusion A; after the sealing groove A of the upper outer pressure plate seat and the sealing protrusion A of the upper inner pressure plate are engaged, the sealing groove A and the sealing protrusion A form an annular sealing cavity A, and the upper end side of the vulcanized capsule to be tested is precisely sealed and embedded in the annular sealing cavity A of the upper support seat.

[0009] Preferably, the lower support seat is composed of a lower inner pressure plate and a lower outer pressure plate seat connected by bolts, and the force sensor is located at the bottom of the lower outer pressure plate seat; the lower end of the vulcanized capsule to be tested has a capsule lower end side, the lower outer pressure plate seat has a sealing groove B, and the lower inner pressure plate has a sealing protrusion B; after the sealing groove B of the lower outer pressure plate seat and the sealing protrusion B of the lower outer pressure plate seat are engaged, the sealing groove B and the sealing protrusion B form an annular sealing cavity B, and the lower end side of the vulcanized capsule to be tested is precisely sealed and embedded in the annular sealing cavity B of the lower support seat.

[0010] Preferably, the lower inner pressure plate has a first air inlet channel communicating with the internal cavity of the vulcanized capsule to be tested, and the lower outer pressure plate seat has a second air inlet channel corresponding to and connected to the first air inlet channel. The first air inlet channel and the second air inlet channel together constitute an air inlet channel.

[0011] Preferably, a lifting auxiliary balancing frame is fixed at the bottom of the upper frame of the platform. The lifting auxiliary balancing frame includes a stabilizing plate located parallel to the lower part of the upper frame of the platform. The stabilizing plate is connected and fixed to the bottom of the upper frame of the platform by several support rods. The center of the stabilizing plate has a lifting guide cylinder, and the lifting drive rod moves up and down through the lifting guide cylinder.

[0012] Preferably, the force sensor is connected to a recorder.

[0013] Preferably, the high and low temperature environment chamber has a steam heating device inside, and a temperature controller connected to the steam heating device is provided outside the device frame.

[0014] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0015] (1) This utility model is equipped with a hydraulic cylinder and loads the vulcanized capsule to be tested through a lifting drive rod, so as to realize the durability pressure test of the sealed vulcanized capsule to be tested. Moreover, the vulcanized capsule to be tested is placed inside a high and low temperature environment chamber and can be tested for high temperature resistance, so that the vulcanized capsule after testing can better realize the vulcanization treatment of air spring bladder semi-finished products, and improve the production efficiency of air spring bladder semi-finished products.

[0016] (2) The force sensor of this utility model transmits pressure measurement at the bottom of the vulcanized capsule to be tested, which facilitates the sealing test of the vulcanized capsule under the action of durable pressure. An inverted U-shaped capsule limiting frame is set on the outside of the vulcanized capsule to be tested. The inverted U-shaped capsule limiting frame can constrain the expansion of the vulcanized capsule to be tested, effectively ensuring the testing of the vulcanized capsule to be tested and promoting the force data detection of the force sensor.

[0017] (3) Both the upper and lower support seats of this utility model have mutually cooperating annular sealing cavities. The annular sealing cavities are sealed and assembled with the end side of the vulcanized capsule to be tested, ensuring the airtightness requirements of the vulcanized capsule to be tested during the test. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0020] Figure 3 for Figure 2 Enlarged view of point B in the middle;

[0021] Figure 4 for Figure 2 Enlarged view of point C in the middle;

[0022] Figure 5 This is a schematic diagram of the structure of the vulcanized capsule to be tested in the embodiment.

[0023] The names corresponding to the reference numerals in the attached figures are as follows:

[0024] 1 - Hydraulic cylinder, 2 - Hydraulic oil source, 3 - Upper outer pressure plate seat, 4 - Upper inner pressure plate, 5 - High and low temperature environment chamber, 6 - Lower inner pressure plate, 7 - Lower outer pressure plate seat, 8 - Force sensor, 9 - Upper limit plate, 10 - Side limit plate, 11 - Air inlet, 111 - Air inlet pipe, 12 - Bench base plate, 13 - Lifting drive rod, 131 - Stabilizing plate, 132 - Support rod, 14 - Upper frame of the bench, 15 - Bench base, 16 - Recorder, 17 - Vulcanized capsule to be tested, 171 - Upper side of capsule, 172 - Lower side of capsule. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the embodiments:

[0026] Example

[0027] like Figures 1-5As shown, a testing device specifically for high-temperature resistance and durability pressure testing of vulcanized capsules includes a hydraulic oil source 2, a hydraulic cylinder 1 (the hydraulic oil source 2 and the hydraulic cylinder 1 have a sealed oil inlet connection, and the hydraulic oil source 2 provides the hydraulic oil required by the hydraulic cylinder 1), a device frame, and a vulcanized capsule 17 to be tested. The device frame includes an upper frame 14 and a base 15 arranged vertically. The upper frame 14 and the base 15 are arranged parallel to each other vertically. Several support rods are fixedly connected between the upper frame 14 and the base 15, forming a durability testing space between the upper frame 14 and the base 15. The test space includes a high-low temperature environment chamber 5 mounted on a test bench base 15. The vulcanized capsule 17 to be tested is placed within the high-low temperature environment chamber 5. The high-low temperature environment chamber 5 provides the required temperature testing environment for the vulcanized capsule 17. During high-temperature resistance testing, it provides the necessary high-temperature environment; after the high-temperature resistance test, the temperature can be appropriately lowered. In some embodiments, the high-low temperature environment chamber 5 can also perform low-temperature resistance testing on the vulcanized capsule 17. The temperature of the environment chamber 5 is adjustable within the range of -40℃ to 200℃. The vulcanized capsule 17 is sealed at its upper end with an upper support seat, and sealed at its lower end with a lower support seat. The vulcanized capsule 17 is used for the vulcanization of air spring bladder semi-finished products. See [reference needed]. Figure 5 The upper end 171 and lower end 172 of the vulcanized capsule 17 to be tested can be well installed and sealed with the device of this utility model.

[0028] like Figure 2 As shown, the hydraulic cylinder 1 is fixed to the upper frame 14 of the test stand. The hydraulic cylinder 1 has a lifting drive rod 13 that moves through the upper frame 14. The end of the lifting drive rod 13 is detachably connected to the upper support seat. The hydraulic cylinder 1 drives the lifting drive rod 13 to move up and down, which in turn drives the upper support seat to move up and down, simulating the air elastic shock absorption working condition of the vulcanizing capsule 17 to be tested. The vulcanizing capsule 17 to be tested will be under pressure, and a continuous pressure resistance durability test is performed while the hydraulic cylinder 1 is operating continuously. A force sensor 8 is installed at the bottom of the lower support seat. The force sensor 8 is used to measure the pressure data at the bottom of the vulcanizing capsule 17 to be tested. Preferably, the force sensor 8 is connected to a recorder 16, which continuously collects and records the pressure data of the force sensor 8. The lower support seat is also provided with an air inlet duct 11 that communicates with the internal cavity of the vulcanizing capsule 17 to be tested. Preferably, the air intake duct 11 is sealed and connected to the air intake pipe 111, and the air intake pipe 111 is sealed and connected to the gas source tank with gas pressure measurement. The gas pressure measurement is used to test the internal gas pressure of the vulcanizing capsule 17 to be tested. Gas is added to the inside of the vulcanizing capsule 17 to be tested through the gas source tank, and the gas pressure measurement is used to make the inside of the vulcanizing capsule 17 to be tested reach the gas pressure environment required for testing.

[0029] In some embodiments, the top of the stand base 15 has a stand base plate 12, such as Figure 1 As shown, the high and low temperature environment chamber 5 is equipped with an inverted U-shaped capsule limiting frame. The inverted U-shaped capsule limiting frame is used to limit the expansion of the vulcanized capsule 17 under test during the test, and to limit the expansion of the vulcanized capsule 17 on the top and left and right sides. The inverted U-shaped capsule limiting frame includes an upper limiting plate 9 and side limiting plates 10 fixed on the left and right sides of the upper limiting plate 9. The upper limiting plate 9, the bottom plate 12 of the test stand, and the side limiting plates 10 form a test limiting space. The vulcanized capsule 17 under test is centrally located in the test limiting space, so that the vulcanized capsule 17 under test is always located in the test limiting space, which also facilitates the force sensor 8 at the bottom to measure the force (if the vulcanized capsule 17 under test leaks air, the air pressure inside the vulcanized capsule 17 under test becomes lower, then the force transmitted to the force sensor 8 decreases, and the reading of the force sensor 8 will gradually decrease significantly). The lifting drive rod 13 moves through the upper limiting plate 9.

[0030] In some embodiments, the upper support has a preferred structure as follows: Figure 3 As shown, the upper support seat is composed of an upper outer pressure plate seat 3 and an upper inner pressure plate 4 connected vertically by bolts. The end of the lifting drive rod 13 is detachably connected to the upper outer pressure plate seat 3. The vulcanizing capsule 17 to be tested has an upper capsule side 171 at its upper end. The upper outer pressure plate seat 3 has a sealing groove A, and the upper inner pressure plate 4 has a sealing protrusion A. After the sealing groove A of the upper outer pressure plate seat 3 and the sealing protrusion A of the upper inner pressure plate 4 are engaged (the sealing protrusion A of the upper inner pressure plate 4 is embedded in the sealing groove A of the upper outer pressure plate seat 3 and is detachably connected by bolts), the sealing groove A and the sealing protrusion A form an annular sealing cavity A. The upper capsule side 171 of the vulcanizing capsule 17 to be tested is precisely sealed and embedded in the annular sealing cavity A of the upper support seat.

[0031] In some embodiments, the preferred structure of the lower support is as follows: Figure 4 As shown, the lower support seat is composed of a lower inner pressure plate 6 and a lower outer pressure plate seat 7 connected vertically by bolts. The force sensor 8 is located at the bottom of the lower outer pressure plate seat 7. The vulcanizing capsule 17 to be tested has a capsule lower end side 172 at its lower end. The lower outer pressure plate seat 7 has a sealing groove B, and the lower inner pressure plate 6 has a sealing protrusion B. After the sealing groove B of the lower outer pressure plate seat 7 and the sealing protrusion B of the lower outer pressure plate seat 7 are engaged (the sealing protrusion B of the lower outer pressure plate seat 7 is embedded in the sealing groove B of the lower outer pressure plate seat 7 and is detachably connected by bolts), the sealing groove B and the sealing protrusion B form an annular sealing cavity B. The capsule lower end side 172 of the vulcanizing capsule 17 to be tested is precisely sealed and embedded in the annular sealing cavity B of the lower support seat. The lower inner pressure plate 6 has a first air inlet channel communicating with the internal cavity of the vulcanizing capsule 17 to be tested, and the lower outer pressure plate seat 7 has a second air inlet channel corresponding to and connected to the first air inlet channel. The first air inlet channel and the second air inlet channel together constitute the air inlet channel 11.

[0032] In some embodiments, a lifting auxiliary balance frame is fixed at the bottom of the upper frame 14 of the platform. The main purpose of the lifting auxiliary balance frame is to assist the lifting drive rod 13 to move up and down smoothly without shaking, and to ensure that the compression force of the hydraulic cylinder 1 is transmitted downward stably, thereby improving the stability of the device. The lifting auxiliary balance frame includes a stabilizing plate 131 located parallel to the lower part of the upper frame 14 of the platform. The stabilizing plate 131 is connected and fixed to the bottom of the upper frame 14 of the platform by a number of support rods 132. The center of the stabilizing plate 131 has a lifting guide cylinder, through which the lifting drive rod 13 moves up and down.

[0033] In some embodiments, the high and low temperature environment chamber 5 has a steam heating device inside (an electric heating device can also be selected to create the required test temperature environment inside the high and low temperature environment chamber 5). The device frame is provided with a temperature controller connected to the steam heating device. A temperature detector can be set inside the high and low temperature environment chamber 5 to detect and output the internal ambient temperature, so as to know the ambient temperature and adjust the temperature through the temperature controller.

[0034] The vulcanized capsule 17 to be tested needs to undergo high temperature resistance and pressure resistance tests. The upper end side 171 of the vulcanized capsule 17 to be tested is sealed and installed in the upper support seat, and the lower end side 172 of the vulcanized capsule 17 to be tested is sealed and installed in the lower support seat. The vulcanized capsule 17 to be tested is placed in the high and low temperature environment chamber 5, and the upper support seat is connected and fixed to the end of the lifting drive rod 13. Air is injected into the vulcanized capsule 17 to be tested through the air inlet pipe 111, which is connected to an air tank. The internal temperature of the high and low temperature environment chamber 5 is controlled at a high temperature (this high temperature is the temperature value set for the test of the vulcanized capsule 17, for example, the temperature value is 180℃). The hydraulic cylinder 1 is started, and the lifting drive rod 13 of the hydraulic cylinder 1 moves up and down reciprocally, causing the vulcanized capsule 17 to be compressed or stretched, to test the durability of the vulcanized capsule 17 under reciprocating compression and stretching. The force sensor 8 monitors the pressure at the bottom of the vulcanized capsule 17 under test and records and stores it through the recorder 16. This utility model also includes a pressure detection device for detecting the internal air pressure of the vulcanized capsule 17 under test (the pressure detection device is used to detect air pressure). The test time or the number of durability tests is set (compression and recovery of the vulcanized capsule 17 under test counts as one test). When the test time or the number of durability tests is reached, the test is stopped, and the vulcanized capsule 17 under test is removed for quality inspection. The vulcanized capsule 17 under test must not have any damage, cracks, stickiness, or other phenomena. After the vulcanized capsule 17 passed the test, the vulcanized capsule was used for the vulcanization treatment of the air spring bladder shell semi-finished product. During the vulcanization of the air spring bladder shell semi-finished product, the air spring bladder shell semi-finished product was covered on the outside of the vulcanized capsule for vulcanization treatment, which improved the production efficiency of the air spring bladder shell semi-finished product.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A testing apparatus specifically designed for testing the high temperature resistance and durability pressure resistance of vulcanized capsules, characterized in that: The device includes a hydraulic oil source (2), a hydraulic cylinder (1), a device frame, and a vulcanizing capsule (17) to be tested. The device frame includes an upper frame (14) and a base (15) arranged vertically. Several support rods are fixed between the upper frame (14) and the base (15). A durability test space is formed between the upper frame (14) and the base (15). A high and low temperature environment chamber (5) located in the durability test space is installed on the base (15). The vulcanizing capsule (17) to be tested is placed in the high and low temperature environment chamber (5). 7) The upper end is sealed with an upper support seat, and the lower end of the vulcanized capsule (17) to be tested is sealed with a lower support seat; the hydraulic cylinder (1) is fixed on the upper frame (14) of the test stand, and the hydraulic cylinder (1) has a lifting drive rod (13) that moves through the upper frame (14) of the test stand. The end of the lifting drive rod (13) is detachably connected to the upper support seat. A force sensor (8) is installed at the bottom of the lower support seat. The lower support seat is also provided with an air inlet (11) that communicates with the internal cavity of the vulcanized capsule (17) to be tested; the hydraulic oil source (2) is sealed and connected to the oil inlet of the hydraulic cylinder (1).

2. The high-temperature resistance and durability pressure testing apparatus for vulcanized capsules according to claim 1, characterized in that: The air intake duct (11) is sealed and connected to the air intake pipe (111), and the air intake pipe (111) is sealed and connected to the gas source tank with gas pressure measurement.

3. The high-temperature resistance and durability pressure testing apparatus for vulcanized capsules according to claim 1, characterized in that: The top of the test bench base (15) has a test bench base plate (12). The high and low temperature environment chamber (5) is equipped with an inverted U-shaped capsule limiting frame. The inverted U-shaped capsule limiting frame includes an upper limit plate (9) and side limiting plates (10) fixed on the left and right sides of the upper limit plate (9). The upper limit plate (9), the test bench base plate (12), and the side limiting plates (10) form a test limiting space. The vulcanized capsule (17) to be tested is centrally located in the test limiting space. The end of the lifting drive rod (13) moves up and down through the upper limit plate (9).

4. The high-temperature resistance and durability pressure testing apparatus for vulcanized capsules according to claim 1 or 3, characterized in that: The upper support seat is composed of an upper outer pressure plate seat (3) and an upper inner pressure plate (4) connected by bolts. The end of the lifting drive rod (13) is detachably connected to the upper outer pressure plate seat (3). The upper end of the vulcanized capsule (17) to be tested has a capsule upper side (171). The upper outer pressure plate seat (3) has a sealing groove A. The upper inner pressure plate (4) has a sealing protrusion A. After the sealing groove A of the upper outer pressure plate seat (3) and the sealing protrusion A of the upper inner pressure plate (4) are engaged, the sealing groove A and the sealing protrusion A form an annular sealing cavity A. The capsule upper side (171) of the vulcanized capsule (17) to be tested is precisely sealed and embedded in the annular sealing cavity A of the upper support seat.

5. The high-temperature resistance and durability pressure testing apparatus for vulcanized capsules according to claim 1 or 3, characterized in that: The lower end support is composed of a lower inner pressure plate (6) and a lower outer pressure plate seat (7) connected by bolts. The force sensor (8) is located at the bottom of the lower outer pressure plate seat (7). The lower end of the vulcanized capsule (17) to be tested has a capsule lower end side (172). The lower outer pressure plate seat (7) has a sealing groove B. The lower inner pressure plate (6) has a sealing protrusion B. After the sealing groove B of the lower outer pressure plate seat (7) and the sealing protrusion B of the lower outer pressure plate seat (7) are engaged, the sealing groove B and the sealing protrusion B form an annular sealing cavity B. The capsule lower end side (172) of the vulcanized capsule (17) to be tested is precisely sealed and embedded in the annular sealing cavity B of the lower end support.

6. The high-temperature resistance and durability pressure testing apparatus for vulcanized capsules according to claim 5, characterized in that: The lower inner pressure plate (6) has a first air inlet channel that communicates with the internal cavity of the vulcanized capsule (17) to be tested, and the lower outer pressure plate seat (7) has a second air inlet channel that is connected to the first air inlet channel. The first air inlet channel and the second air inlet channel together constitute the air inlet channel (11).

7. The high-temperature resistance and durability pressure testing apparatus for vulcanized capsules according to claim 1, characterized in that: The bottom of the upper frame (14) of the platform is fixed with a lifting auxiliary balance frame. The lifting auxiliary balance frame includes a stabilizing plate (131) located parallel to the bottom of the upper frame (14). The stabilizing plate (131) is connected and fixed to the bottom of the upper frame (14) by several support rods (132). The center of the stabilizing plate (131) has a lifting guide cylinder. The lifting drive rod (13) moves up and down through the lifting guide cylinder.

8. The high-temperature resistance and durability pressure testing apparatus for vulcanized capsules according to claim 1, characterized in that: The force sensor (8) is connected to a recorder (16).

9. The high-temperature resistance and durability pressure testing apparatus for vulcanized capsules according to claim 1, characterized in that: The high and low temperature environment chamber (5) has a steam heating device inside, and a temperature controller connected to the steam heating device is provided outside the device frame.

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