Inflammability testing machine for plastic packaging device

Abstract

The present invention relates to the technical field of semiconductor packaging material detection, and provides a plastic packaging device flammability test tester, which comprises a combustion chamber, and further comprises two linear electric sliding rails respectively installed on the left and right side inner walls of the combustion chamber, and a sliding table 1 and a sliding table 2 respectively installed on the left and right side linear electric sliding rails in a sliding manner; the clamping ring assembly is installed in the middle of the table top of the first sliding table and used for clamping and rotating the circular ring plastic packaging device; the vertical column is installed in the middle of the table top of the second sliding table, a hydraulic rod is installed at the inward end of the vertical column, and a long transverse plate is installed at the telescopic end of the hydraulic rod; a frame groove is formed in the middle of the long transverse plate, a locking block is installed on one side of the frame groove, and a displacement block slides on the other side of the frame groove. When the device is used, the flammability detection of the outer ring, the inner ring and the bottom surface area of the circular ring plastic packaging device is realized by independently controlling the sequential ignition of the fire source pipe and the merging function of the double fire sources, and the reliability of test data and the area contrast are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of semiconductor packaging material detection, and more specifically, to a flammability test machine for plastic encapsulated devices. Background Art

[0002] A flammability test machine for plastic encapsulated devices is a device dedicated to evaluating the combustion performance of plastic encapsulated electronic components (such as integrated circuits, semiconductor devices, connectors, etc.). By simulating a flame exposure environment, its combustion behavior is detected to ensure compliance with safety standards such as UL94 and IEC 60695.

[0003] Due to the diverse shapes of plastic encapsulated devices, circular plastic encapsulated devices are also relatively common. The inner and outer rings of them may use plastic materials with different compositions due to functional differences, which may lead to different flammability performances.

[0004] The current plastic flammability test methods (such as vertical / horizontal combustion tests) mainly evaluate the overall sample, and it is difficult to achieve zonal detection of specific areas such as the outer and inner rings of circular devices, resulting in the inability to accurately identify the flammability differences in each area and ultimately affecting the accuracy of the test results.

[0005] Therefore, this application proposes a flammability test machine for plastic encapsulated devices to solve the above problems. Summary of the Invention

[0006] Technical problems to be solved: Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a flammability test machine for plastic encapsulated devices to improve the test accuracy.

[0007] To solve the above technical problems, the present invention provides the following technical solution: A flammability test machine for plastic encapsulated devices, including a combustion chamber, and further including: two linear electric slide rails, respectively installed on the left and right inner walls of the combustion chamber, and a first slide table and a second slide table are respectively slidably installed on the left and right linear electric slide rails; a clamping ring assembly, installed in the middle of the tabletop of the first slide table, for clamping and rotating a circular plastic encapsulated device; a vertical column, installed in the middle of the tabletop of the second slide table, and a hydraulic rod is installed at the inner end of the vertical column, and a long horizontal plate is installed at the telescopic end of the hydraulic rod; a frame groove is opened in the middle of the long horizontal plate, a locking block is installed on one side of the frame groove, a displacement block slides on the other side of the frame groove, and fire source pipes are installed on both the locking block and the displacement block; a magnetic force assembly, installed on the locking block and the displacement block, for adjusting the distance between the locking block and the displacement block; an ignition assembly, installed at the front of the long horizontal plate, for receiving the molten droplets dripping after the combustion of the circular plastic encapsulated device.

[0008] In a new embodiment, the clamping ring assembly includes: a cross column installed in the middle of the tabletop of the first sliding table; a bottom plate installed at the bottom of the inner side of the cross column; a chute is provided in the middle of the bottom plate, and a spring column is installed in the middle of the chute. A slider slides on the spring column and also slides in the chute. A first roller is rotatably installed at the top of the slider; a driving motor is installed at the bottom end of the bottom plate, and the output end of the driving motor is fixedly connected to one end of a second roller. The second roller is rotatably installed on one side of the top of the bottom plate; there are two additional panels, which are respectively clamped at the front and rear parts of the bottom plate.

[0009] In a new embodiment, the clamping ring assembly further includes: a diagonal support plate installed at the top of the inner side of the cross column; a spring pull column slidably installed in the middle of the top end of the diagonal support plate; a threaded groove is provided at the bottom end of the spring pull column, and a first threaded rod is threadedly connected in the threaded groove. A pressing wheel frame is installed at the bottom end of the first threaded rod.

[0010] In a new embodiment, a wear-resistant tabletop is provided on the top of the bottom plate. The wear-resistant tabletop is made of polyethylene material, and wear-resistant sleeves are sleeved on the outside of both the first roller and the second roller.

[0011] In a new embodiment, the magnetic force assembly includes: an electromagnetic ring installed at the inner end of the locking block; a permanent magnet ring installed at the outer end of the displacement block, and the permanent magnet ring and the electromagnetic ring are arranged on the same horizontal plane; there are two sensors, which are respectively installed on the tops of the locking block and the displacement block.

[0012] In a new embodiment, a cross bar is installed in the middle of the frame groove, and a convex head groove is provided at the inner end of the frame groove. A return spring is provided in the convex head groove. One end of the return spring is connected to one end of the displacement block, and the other end of the return spring is connected to the inner wall of the convex head groove.

[0013] In a new embodiment, the ignition component: a middle groove cross plate installed in the middle of the front end of the long cross plate; a plate box slidably installed in the middle of the middle groove cross plate, and a second threaded rod is installed at the rear end of the plate box and fixed by a nut; a partition plate is installed in the middle of the plate box, and ignition materials are laid on the left and right sides of the bottom wall of the plate box.

[0014] In a new embodiment, a horizontal conduit is rotatably installed on the fire source pipe, and a horizontal fire opening is provided at the top of the horizontal conduit.

[0015] In a new embodiment, an exhaust hood is installed at the top end of the combustion chamber, and a filter gas discharge pipe is installed in the middle of the exhaust hood.

[0016] In a new embodiment, a gas supply tank is installed on one side of the combustion chamber, and a double-branch discharge port is installed at the gas supply port of the gas supply tank. Two ports of the branch discharge port are each installed with a telescopic delivery pipe, and the two telescopic delivery pipes are respectively connected to the corresponding fire source pipes.

[0017] Beneficial effects: Compared with the prior art, the advantages of the present invention are as follows: 1. By independently controlling the fire source tubes on the locking block and the displacement block, sequential ignition of the inner and outer rings is achieved, such as igniting the outer ring first and then the inner ring, and the dual-fire source merging function is supported, enabling the detection of the flammability differences in the outer ring, inner ring, and bottom surface areas of the circular plastic encapsulated device, thereby improving the reliability of test data and the regional comparability.

[0018] 2. Through the like-pole magnetic repulsion between the electromagnetic ring and the permanent magnetic ring, combined with the automatic adjustment of the distance between the locking block and the displacement block by the inductor, the flammability tests of the inner and outer rings of ring-shaped devices of different sizes are adapted, achieving precise alignment and fire source coverage.

[0019] 3. Through the elastic clamping and rotating functions of the first roller and the second roller in the clamping ring assembly, combined with the rolling and pressing action of the lower pressing wheel frame, the stable fixation of the circular plastic encapsulated device is ensured; by dividing the circular plastic encapsulated device into fan-shaped zones, the test of each fan corresponding to a fire source size is realized, which not only improves the detection flexibility but also enriches the dimension of flammability data under different fire source conditions.

[0020] 4. By the ignition component directionally receiving the molten droplets, the risk of splashing is prevented, and height adjustment is supported to simulate different dripping scenarios, accurately monitoring whether the dripping object ignites the standard spontaneous combustion object, thereby ensuring the safety of the experiment and improving the scientificity and credibility of the data. Description of the Drawings

[0021] Figure 1 It is a schematic three-dimensional structure diagram of the present invention.

[0022] Figure 2 It is a schematic internal structure diagram of the combustion chamber of the present invention.

[0023] Figure 3 It is a schematic position structure diagram of the linear electric slide rail of the present invention.

[0024] Figure 4 It is a schematic position structure diagram of the clamping ring assembly of the present invention.

[0025] Figure 5 It is a schematic structure diagram of the clamping ring assembly of the present invention.

[0026] Figure 6 It is a schematic bottom structure diagram of the bottom plate of the present invention.

[0027] Figure 7 It is a schematic structure diagram of the vertical column of the present invention.

[0028] Figure 8 It is a schematic structure diagram of the long horizontal plate of the present invention.

[0029] Figure 9 It is a schematic structure diagram of the magnetic force assembly of the present invention.

[0030] Figure 10 Schematic structural diagram of the ignition component of the present invention.

[0031] Figure 11 Schematic diagram of the separation mode of the two ignition tubes of the present invention.

[0032] Figure 12 Schematic diagram of step-by-step displacement detection of the merging mode of the two ignition tubes of the present invention.

[0033] Figure 13 Schematic diagram of the fan-shaped partition of the circular plastic encapsulation device of the present invention.

[0034] In the figure, the reference numerals are: 1, combustion chamber; 2, linear electric slide rail; 21, slide table 1; 22, slide table 2; 3, clamping ring assembly; 301, cross column; 302, bottom plate; 303, chute; 304, spring column; 305, slider; 306, roller 1; 307, drive motor; 308, roller 2; 309, additional panel; 3010, diagonal support plate; 3011, spring pull column; 3012, threaded rod 1; 3013, lower pressing wheel frame; 4, vertical column; 5, hydraulic rod; 6, long horizontal plate; 7, frame groove; 8, locking block; 9, displacement block; 10, ignition tube; 101, horizontal conduit; 102, horizontal fire opening; 11, magnetic component; 1101, electromagnetic ring; 1102, permanent magnet ring; 1103, inductor; 12, ignition component; 1201, middle groove horizontal plate; 1202, plate box; 1203, threaded rod 2; 1204, partition plate; 1205, ignition material; 13, cross bar; 14, return spring; 15, exhaust hood; 16, air filter and exhaust pipe; 17, gas supply tank; 18, telescopic conveying pipe. Detailed implementation manners

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] By providing a flammability test machine for plastic encapsulation devices in the embodiments of the present application, the problem that the existing plastic flammability test machine cannot achieve the partition detection of the outer ring and the inner ring of the circular device, resulting in inaccurate identification of flammability differences and affecting the accuracy of the detection results is solved. During use, the flammability differences of the outer ring, inner ring and bottom surface area of the circular plastic encapsulation device are detected, thereby improving the reliability of the test data and the regional comparability.

[0037] The technical solutions in the embodiments of the present application are as follows to solve the above technical problems.

[0038] Example 1 Please refer to Figures 1-10 , a flammability test machine for plastic encapsulated devices, including a combustion chamber 1, and further including: linear electric slide rails 2, two of which are provided and respectively installed on the left and right inner walls of the combustion chamber 1, and a first slide 21 and a second slide 22 are respectively slidably installed on the left and right linear electric slide rails 2; a clamping ring assembly 3, installed in the middle of the tabletop of the first slide 21, for clamping and rotating a circular plastic encapsulated device; a vertical column 4, installed in the middle of the tabletop of the second slide 22, and a hydraulic rod 5 is installed at one end of the vertical column 4 facing inwards, and a long horizontal plate 6 is installed at the telescopic end of the hydraulic rod 5; a frame groove 7 is opened in the middle of the long horizontal plate 6, a locking block 8 is installed on one side of the frame groove 7, a displacement block 9 slides on the other side of the frame groove 7, and a fire source tube 10 is installed on both the locking block 8 and the displacement block 9; a magnetic force assembly 11, installed on the locking block 8 and the displacement block 9, for adjusting the distance between the locking block 8 and the displacement block 9; an ignition assembly 12, installed at the front of the long horizontal plate 6, for receiving the molten droplets dripping after the circular plastic encapsulated device burns.

[0039] In this embodiment, please refer to Figures 1-10As shown, by setting the vertical column 4, hydraulic rod 5, long horizontal plate 6, frame groove 7, locking block 8, displacement block 9 and fire source tube 10, first, the linear electric slide rail 2 is used to make the first slide 21 and the second slide 22 move up and down for adjustment. Subsequently, the clamping ring assembly 3 installed on the first slide 21 is used to clamp the circular plastic encapsulated device. Then, the hydraulic rod 5 inside the vertical column 4 on the second slide 22 drives the connected long horizontal plate 6 to perform a transverse telescopic movement, and makes the long horizontal plate 6 reach the position below the clamping ring assembly 3. At this time, the locking block 8 fixed in the frame groove 7 on the long horizontal plate 6 will be precisely aligned with the outer ring of the circular plastic encapsulated device. Then, using the magnetic force assembly 11, the distance between the locking block 8 and the displacement block 9 is adjusted, so that the displacement block 9 moves inward and is aligned with the inner ring of the circular plastic encapsulated device. When the locking block 8 and the displacement block 9 are aligned with specific areas of the inner and outer rings of the circular plastic encapsulated device, the fire source tubes 10 installed on the locking block 8 and the displacement block 9 are respectively activated to release the fire source, so as to realize the independent combustion test of the inner and outer rings. This test process aims to detect the flammability of the inner and outer rings of the circular plastic encapsulated device. (When the magnetic force assembly 11 is turned off, the locking block 8 and the displacement block 9 will start to approach and contact, forming a single large fire source, which can conduct a combustion test on the bottom surface of the circular plastic encapsulated device, and then realize the combined combustion of the two fire source tubes 10). At the same time, the clamping ring assembly 3 also has a rotating function, which can rotate the circular plastic encapsulated device to be detected. This rotating function can cooperate with the fan-shaped partition of the circular plastic encapsulated device. Every time it rotates to a fan-shaped partition, it is paired with fire sources of different temperatures from the fire source tube 10 to realize the flammability of the circular plastic encapsulated device in the face of multiple rounds of different fire source tests. The molten droplets dripping during the combustion process will be received by the ignition assembly 12, thus preventing them from splashing and causing potential safety hazards. In addition, by observing whether the drippings received by the ignition assembly 12 can ignite the self-igniting substance (such as standard cotton), the melting droplet ignition risk of the material can be further determined, so as to measure the flammability of the inner and outer ring parts of the circular plastic encapsulated device.

[0040] Specific application scenarios of the two fire source tubes 10 (such as Figure 11 , Figure 12 and Figure 13 shown): In the separated mode of the two fire source tubes 10 ( Figure 11 shown), the inner and outer rings of the circular plastic encapsulated device can be independently detected for flammability. Among them, the position of the fire source tube 10 for the inner ring can be flexibly adjusted according to the size of the inner ring of the device to adapt to the detection requirements within a certain range; In the combined mode of the two fire source tubes 10 ( Figure 12 shown), the fire source tubes 10 are integrated into one body, and can simultaneously detect the outer ring, bottom ring surface and inner ring of the device (corresponding to Figure 12Perform a combined combustion test on the marked areas of 12-1, 12-2, and 12-3 in the middle), and cooperate with the clamping ring assembly 3 to drive the device to rotate. Every time it passes through a preset fan-shaped partition (the circular plastic encapsulated device is divided into multiple fan-shaped partitions with the center of the circle), ( Figure 13 As shown), the temperature of the fire source tube 10 increases in a gradient (the rotation direction of the circular plastic encapsulated device is consistent with the temperature direction of the fire source tube 10 increasing in a gradient). Finally, the stepped temperature rise detection of all fan-shaped partitions is completed, realizing the controllable temperature rise flammability assessment of parts such as the outer ring and the inner ring.

[0041] In summary, through the partition combustion test of the inner and outer rings, magnetic force adaptive adjustment, and dynamic rotation clamping, this technical solution effectively solves the problem that existing equipment cannot accurately evaluate the local flammability of circular plastic encapsulated devices.

[0042] Furthermore, please refer to Figure 8 As shown, the fire source tube 10 is rotationally installed with a transverse conduit 101, and a transverse fire opening 102 is opened at the top of the transverse conduit 101. By setting the transverse conduit 101 and the transverse fire opening 102, the fire source tube 10 is configured with the transverse conduit 101 and the transverse fire opening 102. On the one hand, it can adjust the orientation of the fire source, and on the other hand, it can effectively concentrate the flame heat and reduce energy loss, thereby shortening the test time.

[0043] Furthermore, please refer to Figures 1-3 As shown, an exhaust hood 15 is installed at the top of the combustion chamber 1, and a filter gas discharge pipe 16 is installed in the middle of the exhaust hood 15. By setting the exhaust hood 15 and the filter gas discharge pipe 16, the combustion exhaust gas generated inside the combustion chamber 1 is filtered before being discharged. It not only discharges the combustion exhaust gas centrally, effectively reducing the retention of heat in the combustion chamber 1, but also improves the purification effect of the exhaust gas, contributing to maintaining the cleanliness and safety of the combustion chamber 1 and its surrounding environment.

[0044] Furthermore, please refer to Figure 3 As shown, a gas supply tank 17 is installed on one side of the combustion chamber 1, and a double-branch discharge port is installed at the gas supply port of the gas supply tank 17. Two telescopic delivery pipes 18 are installed at both ports of the branch discharge port, and the two telescopic delivery pipes 18 are respectively connected to the corresponding fire source tubes 10. By setting the gas supply tank 17 and the telescopic delivery pipes 18, the design of the double-branch discharge port and the telescopic delivery pipes 18 enables the gas supply tank 17 to supply gas to the two fire source tubes 10 simultaneously. Through the free stretching of the telescopic delivery pipes 18, it can meet the stable and continuous delivery of gas after the movement of the fire source tubes 10, avoiding combustion fluctuations or flameout phenomena caused by unstable gas supply.

[0045] Embodiment 2 Please refer to Figures 4-6, the clamping ring assembly 3 includes: a cross column 301 installed in the middle of the tabletop of the first sliding table 21; a bottom plate 302 installed at the bottom of the inner side of the cross column 301; a chute 303 is provided in the middle of the bottom plate 302, and a spring column 304 is installed in the middle of the chute 303. A slider 305 slides on the spring column 304, and the slider 305 also slides in the chute 303. A first roller 306 is rotatably installed at the top of the slider 305; a driving motor 307 is installed at the bottom end of the bottom plate 302, and the output end of the driving motor 307 is fixedly connected to one end of a second roller 308. The second roller 308 is rotatably installed on one side of the top of the bottom plate 302; there are two additional panels 309, which are respectively clamped at the front and rear parts of the bottom plate 302.

[0046] By providing the cross column 301, the bottom plate 302, the chute 303, the spring column 304, the slider 305, the first roller 306, the driving motor 307 and the second roller 308, first take a circular plastic encapsulated device and place it between the first roller 306 and the second roller 308. Using the fixed first roller 306 and the movable second roller 308 composed of the chute 303, the spring column 304 and the slider 305, the outer ring and the inner ring of the circular plastic encapsulated device are elastically clamped, and circular devices with different diameters within a certain range can be compatible. Subsequently, the driving motor 307 is used to drive the second roller 308 to rotate. Combining with the limiting and guiding function of the first roller 306, the circular plastic encapsulated device rotates accordingly, facilitating the adjustment of the test part of the circular plastic encapsulated device to correspond to the subsequent test equipment (i.e., the fire source tube 10 on the long cross plate 6) so as to detect the flammability of a specific surface of the device. Among them, additional panels 309 are installed at the front and rear parts of the bottom plate 302, thereby increasing the area of the bottom plate 302 and better accommodating the circular plastic encapsulated device placed on the bottom plate 302.

[0047] Furthermore, please refer to Figures 4-6 , the clamping ring assembly 3 further includes: a diagonal support plate 3010 installed at the top of the inner side of the cross column 301; a spring pull column 3011 slidably installed in the middle of the top end of the diagonal support plate 3010; a threaded groove is provided at the bottom end of the spring pull column 3011, and a first threaded rod 3012 is threadedly connected in the threaded groove. The bottom end of the first threaded rod 3012 is installed with a downward pressing wheel frame 3013.

[0048] By setting the diagonal bracing plate 3010, the spring pull post 3011, the first threaded rod 3012 and the lower pressing wheel frame 3013, before continuing to clamp the circular plastic encapsulated device by the first roller 306 and the second roller 308 as described above, the operator can manually lift the spring pull post 3011, then place the circular plastic encapsulated device between the first roller 306 and the second roller 308, and then slowly release the spring pull post 3011 to reset. Thus, the lower pressing wheel frame 3013 at the lower part of the spring pull post 3011 slides and abuts against the top of the circular plastic encapsulated device, and together with the bottom plate 302, as well as the first roller 306 and the second roller 308, limits the top and bottom surfaces and the left and right surfaces of the circular plastic encapsulated device, thereby ensuring the clamping of the circular plastic encapsulated device and the stability during the rotation adjustment of the test points.

[0049] Furthermore, a wear-resistant surface is provided on the top of the bottom plate 302. The wear-resistant surface is made of polyethylene material. Wear-resistant sleeves are sleeved on the outer parts of both the first roller 306 and the second roller 308. The wear-resistant surface on the top surface of the bottom plate 302 is made of polyethylene material, especially ultra-high molecular weight polyethylene, which has extremely high wear resistance. This material can be used for a long time under harsh conditions such as heavy load and high friction without being easily worn, thus significantly extending the service life of the bottom plate 302. The wear-resistant sleeves sleeved on the outer parts of the first roller 306 and the second roller 308 also enhance their wear resistance, reduce the wear caused by rolling friction, and maintain the accuracy and stability of the first roller 306 and the second roller 308.

[0050] Embodiment 3 Please refer to Figures 7-9 , the magnetic force assembly 11 includes: an electromagnetic ring 1101, installed at the inner end of the locking block 8; a permanent magnetic ring 1102, installed at the outer end of the displacement block 9, and the permanent magnetic ring 1102 and the electromagnetic ring 1101 are arranged on the same horizontal plane; two sensors 1103, respectively installed on the tops of the locking block 8 and the displacement block 9.

[0051] By setting the electromagnetic ring 1101, the permanent magnet ring 1102 and the inductor 1103, the flexible adjustment of the distance between the locking block 8 and the displacement block 9 is realized to adapt to circular ring devices of different sizes. Specifically, the positive magnetic force generated by the electromagnetic ring 1101 repels the positive magnetic force of the permanent magnet ring 1102. This magnetic repulsion effect pushes the displacement block 9 connected to the permanent magnet ring 1102 to move within the frame groove 7. At the same time, with the help of the inductor 1103, the alignment of the locking block 8 and the displacement block 9 with the inner and outer rings of the circular ring plastic encapsulation device can be determined (specifically, the inductor 1103 on the locking block 8 senses the outer ring of the circular ring plastic encapsulation device. After alignment, it is used as a reference point to stop the hydraulic rod 5 from driving the long horizontal plate 6 to move, while the inductor 1103 on the displacement block 9 senses the inner ring of the circular ring plastic encapsulation device. After alignment, the magnetic force supply value of the electromagnetic ring 1101 is maintained, so that the locking block 8 and the displacement block 9 remain at this distance. Therefore, the functions of the two inductors 1103 are different), thus ensuring the smooth progress of the flammability test.

[0052] Further, please refer to Figure 8 and Figure 9 , a cross bar 13 is installed in the middle of the frame groove 7, and a convex head groove is provided at the inner end of the frame groove 7. A return spring 14 is arranged in the convex head groove. One end of the return spring 14 is connected to one end of the displacement block 9, and the other end of the return spring 14 is connected to the inner wall of the convex head groove. By setting the cross bar 13 and the return spring 14, the cross bar 13 is used to ensure that the movement of the displacement block 9 does not deviate, and the return spring 14 enables the displacement block 9 to reset under the influence of the loss of the magnetic force of the magnetic force assembly 11 and abut against the locking block 8.

[0053] Further, please refer to Figure 7 and Figure 10 , the ignition assembly 12: the middle groove horizontal plate 1201 is installed in the middle of the front end of the long horizontal plate 6; the plate box 1202 is slidably installed in the middle of the middle groove horizontal plate 1201, and a second threaded rod 1203 is installed at the rear end of the plate box 1202 and fixed by a nut; a partition plate 1204 is installed in the middle of the plate box 1202, and ignition materials 1205 are laid on both the left and right sides of the bottom wall of the plate box 1202.

[0054] By setting the middle groove cross plate 1201, the plate box 1202, the second threaded rod 1203, the partition plate 1204 and the igniter 1205, using the slot position on the middle groove cross plate 1201 and the fixation of the second threaded rod 1203 and the nut, the up and down position of the plate box 1202 can be moved and adjusted to simulate the ignition situation of the igniter 1205 dripping from a certain height position. In addition, the plate box 1202 can be double-received by using the partition plate 1204 for zoning, so that the ignition assembly 12 can observe the dropped igniters 1205 in the inner ring and outer ring of the circular plastic encapsulated device in a zoned manner, or the partition plate 1204 can be removed to observe the overall dropped igniter 1205 on the bottom surface of the circular plastic encapsulated device, improving the flexibility and convenience of use.

[0055] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; 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 recorded 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 various embodiments of the present invention.

Claims

1. A flammability test machine for plastic packaged devices, comprising a combustion chamber (1), characterized in that: Also includes: Two linear electric slide rails (2) are provided and are respectively mounted on the left and right inner walls of the combustion chamber (1); a slide table 1 (21) and a slide table 2 (22) are respectively slidably mounted on the left and right linear electric slide rails (2); A clamping ring assembly (3) is mounted in the middle of the table top of the slide table (21) and is used to clamp and rotate the circular plastic packaging device; A vertical column (4) is installed in the middle of the tabletop of the second slide table (22); a hydraulic rod (5) is installed at the inward end of the vertical column (4); and a long horizontal plate (6) is installed at the telescopic end of the hydraulic rod (5); A frame groove (7) is provided in the middle of the long horizontal plate (6), a locking block (8) is installed on one side of the frame groove (7), a displacement block (9) is slidably provided on the other side of the frame groove (7), and a fire source tube (10) is installed on both the locking block (8) and the displacement block (9); A magnetic assembly (11) mounted on the locking block (8) and the displacement block (9) and used to adjust the distance between the locking block (8) and the displacement block (9); The ignition assembly (12) is mounted on the front part of the long horizontal plate (6) and is used to receive the molten liquid droplets dripping after the annular plastic packaging device is burned.

2. The flammability tester for plastic packaged devices according to claim 1, characterized in that: The clamp ring assembly (3) comprises: A horizontal column (301) is installed in the middle of the table top of the first slide table (21); A bottom plate (302) is mounted on the bottom of an inner side of the horizontal column (301); A slide groove (303) is provided in the middle of the bottom plate (302), and a spring column (304) is installed in the middle of the slide groove (303). A slider (305) slides on the spring column (304), and the slider (305) also slides in the slide groove (303). A roller (306) is rotatably installed on the top of the slider (305); A driving motor (307) is mounted at the bottom end of the bottom plate (302), an output end of the driving motor (307) is fixedly connected to one end of the second roller (308), and the second roller (308) is rotatably mounted on one side of the top of the bottom plate (302); Two additional panels (309) are provided and are respectively clamped on the front and rear parts of the bottom plate (302).

3. The flammability tester for plastic packaged devices as claimed in claim 2, characterized in that: The clamp ring assembly (3) further comprises: A diagonal brace plate (3010) is installed on the top of the inner side of the horizontal column (301); A spring pull column (3011) is slidably mounted on the middle of the top end of the diagonal support plate (3010); The bottom end of the spring pull column (3011) is provided with a threaded groove, a threaded rod 1 (3012) is threadedly connected in the threaded groove, and a lower pressure wheel frame (3013) is installed at the bottom end of the threaded rod 1 (3012).

4. The flammability tester for plastic packaged devices as claimed in claim 2, characterized in that: The top of the bottom plate (302) is provided with a wear-resistant plate surface, which is made of polyethylene material. The outer parts of the first roller (306) and the second roller (308) are both covered with wear-resistant sleeves.

5. The flammability tester for plastic packaged devices as claimed in claim 1, characterized in that: The magnetic component (11) comprises: An electromagnetic ring (1101) is mounted on an inward end of the locking block (8); A permanent magnetic ring (1102) is mounted on an outward end of the displacement block (9), and the permanent magnetic ring (1102) and the electromagnetic ring (1101) are arranged in the same horizontal plane; Two sensors (1103) are provided and are respectively installed on the top of the locking block (8) and the displacement block (9).

6. The flammability tester for plastic packaged devices as claimed in claim 1, characterized in that: A cross bar (13) is installed in the middle of the frame groove (7), and a convex head groove is provided at one end of the frame groove (7) facing inward, a return spring (14) is provided in the convex head groove, one end of the return spring (14) is connected to one end of the displacement block (9), and the other end of the return spring (14) is connected to the inner wall of the convex head groove.

7. The flammability tester for plastic packaged devices as claimed in claim 1, characterized in that: The ignition assembly (12): The middle groove transverse plate (1201) is installed at the middle of the front end of the long transverse plate (6); The plate box (1202) is slidably mounted in the middle of the middle slot horizontal plate (1201), and a second threaded rod (1203) is mounted on the rear end of the plate box (1202) and fixed by a nut; A partition plate (1204) is installed in the middle of the plate box (1202), and igniters (1205) are laid on both the left and right sides of the bottom wall of the plate box (1202).

8. The flammability tester for plastic packaged devices as claimed in claim 1, characterized in that: The fire source tube (10) is rotatably mounted with a transverse conduit (101), and a transverse fire opening (102) is provided at the top of the transverse conduit (101).

9. The flammability tester for plastic packaged devices as claimed in claim 1, characterized in that: An exhaust hood (15) is installed at the top of the combustion chamber (1), and an air filter exhaust pipe (16) is installed in the middle of the exhaust hood (15).

10. The flammability tester for plastic packaged devices according to claim 1, characterized in that: A gas supply tank (17) is installed on one side of the combustion chamber (1), and a gas supply port of the gas supply tank (17) is installed with a double-branch discharge port, and both ports of the branch discharge port are installed with a telescopic delivery pipe (18), and the two telescopic delivery pipes (18) are respectively connected to the corresponding fire source pipe (10).

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