Glowing filament testing machine for testing combustion performance of plastic material

Abstract

The utility model belongs to the technical field of glowing filament testing equipment, in particular to a glowing filament testing machine for testing the combustion performance of a plastic material, which is characterized in that a smoke exhaust mechanism is screwed in an internal thread sleeve, and an air hole is formed in the upper end of a box body; the glowing filament test mechanism comprises a bottom plate mounted at the bottom of the box body, a pneumatic telescopic part capable of resetting quickly is mounted on the upper surface of the bottom plate, a clamping part for clamping a plastic part to be tested is arranged on a telescopic part of the pneumatic telescopic part, an insulating plate is fixed on the upper surface of the bottom plate, and a glowing filament is arranged on the upper part of the insulating plate; through the glowing filament test mechanism composed of the bottom plate, the pneumatic telescopic part, the clamping part, the insulating plate, the glowing filament and the binding post, the glowing filament test mechanism can conveniently drive the clamping part to move through the pneumatic telescopic part, a to-be-tested plastic part clamped by the clamping part is in contact with the glowing filament to perform a burning experiment, and the pneumatic telescopic part can be quickly reset, so that the glowing filament test efficiency is improved. Therefore, the to-be-tested plastic part and the glowing filament can be quickly separated after a burning experiment.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of glowing filament test equipment, and particularly relates to a glowing filament testing machine for testing the combustion performance of plastic materials. BACKGROUND

[0002] The glowing filament testing machine is suitable for conducting fire hazard tests and combustion performance tests on electrical and electronic products, household appliances and materials thereof, simulates the heat stress caused by a heat source or ignition source such as a glowing element or an overload resistor in a short time under the condition of equipment failure or overload, and is used for evaluating the fire hazard of products.

[0003] The existing Chinese patent CN218445243U discloses a "glowing filament testing machine, including a case, a glowing filament assembly, a test drive assembly, and a test fixture, the case is provided with a controller and a test cabin on one side of the controller, the test cabin is provided with a door plate which can be opened and closed, the glowing filament assembly is arranged in the test cabin and connected with the controller; the test drive assembly is installed in the test cabin and provided with a test sliding table, the test drive assembly is used for driving the test sliding table to move towards the glowing filament assembly, a fixed frame is installed on the test sliding table, the test fixture includes a fixture frame, a fixed pressing plate installed in the fixture frame, and an adjusting bolt installed in the fixture frame and used for adjusting the fixed pressing plate", which drives the test sliding table to move towards the glowing filament assembly through the test drive assembly, however, when separation is needed, the drive assembly cannot quickly move in the reverse direction with the test sliding table, which is not conducive to the problem of quickly separating the plastic after combustion, and the smoke generated after combustion is directly discharged, which can easily cause indoor environmental pollution. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies in the prior art, the utility model provides a glowing filament testing machine for testing the combustion performance of plastic materials, and the specific technical scheme is as follows:

[0005] A glowing filament testing machine for testing the combustion performance of plastic materials, comprising a box body and a glowing filament testing mechanism installed in the box body for plastic material burning test, the surface of the box body is provided with a controller and a transparent observation window, an internal thread sleeve is welded to the upper end of the box body, a smoke exhaust mechanism is screwed into the internal thread sleeve, a ventilation hole is formed in the upper end of the box body, and the ventilation hole is located on the inner side of the internal thread sleeve.

[0006] The glowing filament testing mechanism comprises a bottom plate installed at the bottom of the box body, a quick reset pneumatic telescopic piece is installed on the upper surface of the bottom plate, the telescopic part of the pneumatic telescopic piece is provided with a clamping piece for clamping the plastic part to be tested, an insulating plate is fixed to the upper surface of the bottom plate, a glowing filament is arranged on the upper part of the insulating plate, and the glowing filament is located on the side edge of the plastic part to be tested, and a terminal post is arranged at the end of the glowing filament.

[0007] The smoke exhaust mechanism comprises a pipe body screwed in a threaded sleeve, an air exhaust pipe is welded to the upper end of the pipe body, the lower end of the air exhaust pipe extends into the pipe body, an air exhaust fan for exhausting air upwards is installed in the air exhaust pipe, a gas permeable pipe is welded in the pipe body, a dust collecting ring is welded to the lower end of the gas permeable pipe, a smoke dust filter plate is installed in the gas permeable pipe, the upper end of the smoke dust filter plate is inserted into the outside of the lower end of the air exhaust pipe, a sealing plate is arranged on the lower surface of the gas permeable pipe, a boss is integrally formed on the upper surface of the sealing plate, and the boss is inserted into the inside of the lower end of the smoke dust filter plate.

[0008] Preferably, the pneumatic telescopic part comprises a cylinder mounted on the upper surface of the bottom plate, and a gas pump mounted on the bottom of the box body, the gas outlet end of the gas pump is connected with the gas inlet end of the cylinder, a telescopic rod is fixed to the telescopic end of the cylinder, a support rod is fixed to the end of the telescopic rod away from the cylinder, the clamping part is mounted on the upper end of the support rod, a guide rod is movably mounted in a hole formed in the end of the telescopic rod, a spring is sleeved on the outside of the guide rod, and the two ends of the spring are fixed with the support rod and the insulating plate respectively.

[0009] Preferably, the clamping part comprises a support fixed to the upper end of the support rod, a reverse double-threaded rod is rotatably mounted on the support, two clamping plates are symmetrically arranged in the support, the threads at the two ends of the reverse double-threaded rod are screwed in the screw holes formed in the two clamping plates respectively, and a sliding rod for limiting the clamping plates is fixed in the support.

[0010] Preferably, four supporting wheels are symmetrically mounted on the lower end of the support, two parallel guide rail frames are fixed on the upper surface of the bottom plate, and the supporting wheels are located in the grooves formed in the upper ends of the guide rail frames.

[0011] Preferably, grooves for limiting the to-be-measured plastic parts are formed on the opposite surfaces of the clamping plates.

[0012] Preferably, the cross section of the dust collecting ring is in the shape of a "C" with the opening upward.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] 1. The utility model discloses a box body, install the incandescent filament test mechanism in the box body, and the controller and transparent observation window are set on the surface of box body, when using, the controller controls incandescent filament test mechanism to carry out the incandescence experiment to the plastic material, and the user can observe the incandescence experiment condition of plastic material through transparent observation window, and the inner thread sleeve welded on the upper end of box body is screwed with the smoke exhaust mechanism, and the smoke exhaust mechanism is convenient for the smoke exhaust mechanism to take out the smoke of incandescence experiment outside the box body, through the incandescent filament test mechanism that is composed of bottom plate, pneumatic telescopic part, clamping piece, insulating plate, incandescent filament and terminal post, the incandescent filament test mechanism is convenient for moving with the clamping piece through pneumatic telescopic part, and the plastic piece of being measured that the clamping piece clamps is contacted with incandescent filament and carries out the incandescence experiment, and pneumatic telescopic part can reset quickly, thereby the plastic piece of being measured and incandescent filament are separated quickly after incandescence experiment, through the smoke exhaust mechanism that is composed of pipe body, smoke exhaust pipe, smoke exhaust fan, air pipe, dust collecting ring, smoke dust filter board, sealing plate and boss, and the upper end welding of pipe body is screwed in the inner thread sleeve, and the smoke exhaust fan installed in smoke exhaust pipe is convenient for taking out the air in pipe body upwards, thereby reaches the purpose that the smoke dust in the box body is exhausted by smoke exhaust mechanism, and the air pipe welded in pipe body is installed with smoke dust filter board, and the upper end of smoke dust filter board is sleeved on the outside of the lower end of smoke exhaust pipe, and the lower end of smoke dust filter board is sleeved on the outside of boss, thereby the sealing plate of the integral molding of boss lower end is closely attached to the lower surface of dust collecting ring, and the dust collecting ring is welded on the lower end of air pipe, thereby the air in pipe body is filtered by smoke dust filter board, and the dust collecting ring is used for collecting the large particle in smoke.

[0015] 2. The utility model discloses a hole is set up in the guide rod end, and the guide rod is movably installed in the hole, thereby the air in the air cylinder is exhausted after the air pump is powered off, and the guide rod fixed at the telescopic end of air cylinder resets under the action of spring, thereby realizing that the telescopic rod resets with the clamping piece through the support rod, and the plastic piece of being measured and the insulating plate are separated quickly.

[0016] 3. The utility model discloses a clamping piece that is composed of support, reverse double thread rod, clamping plate and slide rod, and the reverse double thread rod rotatably installed on the support is screwed in the screw hole of two clamping plates, thereby the reverse double thread rod rotates and takes two clamping plates to approach each other or to be far away, and the two clamping plates approach each other and clamp the plastic piece of being measured, and the slide rod fixed in the support is used for clamping plate limiting, and the stability of clamping plate when moving is increased. ACCURACY

[0017] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0018] Figure 2 It is the three-dimensional structure schematic diagram of incandescent filament test mechanism in the utility model;

[0019] Figure 3 It is the three-dimensional structure schematic diagram when installing dust collecting disc on incandescent filament test mechanism in the utility model;

[0020] Figure 4 It is the structure schematic diagram of the cylinder, telescopic rod, support rod, support, reverse double thread rod, clamping plate, sliding rod, supporting wheel and guide rail frame in the utility model;

[0021] Figure 5 It is the sectional structure schematic diagram of the smoke exhaust mechanism in the utility model.

[0022] Reference signs: 1, box body;2, glowing filament test mechanism;21, bottom plate;22, cylinder;23, air pump;24, telescopic rod;25, support rod;26, guide rod;27, spring;28, support;29, reverse double thread rod;30, clamping plate;31, sliding rod;32, supporting wheel;33, guide rail frame;34, insulating plate;35, glowing filament;36, terminal post;37, plastic part to be measured;3, controller;4, transparent observation window;5, internal thread sleeve;6, smoke exhaust mechanism;61, pipe body;62, smoke exhaust pipe;63, smoke exhaust fan;64, air permeable pipe;65, dust collecting ring;66, smoke dust filter plate;67, sealing plate;68, boss;7, air permeable hole;8, dust collecting disc. DETAILED DESCRIPTION

[0023] The technical scheme of the utility model will be described below in combination with the drawings and embodiments.

[0024] Please refer to Figures 1-5 The utility model provides the following technical scheme: a kind of glowing filament test machine for plastic material combustion performance test, including box body 1, and box body 1 inside installation is used for the glowing filament test mechanism 2 of plastic material burning test, the surface of box body 1 is provided with controller 3 and transparent observation window 4, box body 1 upper end is welded with internal thread sleeve 5, internal thread sleeve 5 is screwed with smoke exhaust mechanism 6, box body 1 upper end is provided with air permeable hole 7, and air permeable hole 7 is located internal thread sleeve 5 inside;

[0025] Glowing filament test mechanism 2 includes the bottom plate 21 installed in the bottom of box body 1, the quick reset pneumatic telescopic piece is installed on the upper surface of bottom plate 21, and the telescopic part of pneumatic telescopic piece is provided with clamping piece for clamping the plastic part 37 to be measured, the insulating plate 34 is fixed on the upper surface of bottom plate 21, the upper part of insulating plate 34 is provided with glowing filament 35, and the glowing filament 35 is located at the side of plastic part 37 to be measured, and the terminal post 36 is provided at the end of glowing filament 35;

[0026] The smoke exhaust mechanism 6 comprises a pipe body 61 screwed in the inner threaded sleeve 5, the upper end of the pipe body 61 is welded with a smoke exhaust pipe 62, the lower end of the smoke exhaust pipe 62 extends into the interior of the pipe body 61, a smoke exhaust fan 63 for exhausting air upward is installed in the smoke exhaust pipe 62, a gas permeable pipe 64 is welded in the pipe body 61, the lower end of the gas permeable pipe 64 is welded with a dust collecting ring 65, a smoke dust filter plate 66 is installed in the interior of the gas permeable pipe 64, the upper end of the smoke dust filter plate 66 is inserted between the smoke exhaust pipe 62 and the gas permeable pipe 64, the lower surface of the gas permeable pipe 64 is provided with a sealing plate 67, the upper surface of the sealing plate 67 is integrally formed with a boss 68, and the boss 68 is inserted into the interior of the lower end of the smoke dust filter plate 66.

[0027] In the embodiment, the incandescent filament test mechanism 2 installed in the box body 1, the controller 3 and the transparent observation window 4 arranged on the surface of the box body 1 are used, the controller 3 controls the incandescent filament test mechanism 2 to perform burning test on the plastic material, the user can observe the burning test condition of the plastic material through the transparent observation window 4, the inner threaded sleeve 5 welded on the upper end of the box body 1 is screwed with the smoke exhaust mechanism 6, which is convenient for the smoke exhaust mechanism 6 to exhaust the smoke generated in the burning test out of the box body 1; the incandescent filament test mechanism 2 composed of the bottom plate 21, the pneumatic telescopic piece, the clamping piece, the insulating plate 34, the incandescent filament 35 and the terminal post 36 is convenient for the incandescent filament test mechanism 2 to move with the clamping piece through the pneumatic telescopic piece, the clamping piece clamps the plastic piece 37 to be tested, which is in contact with the incandescent filament 35 to perform burning test, and the pneumatic telescopic piece can be quickly reset, so that the plastic piece 37 to be tested is quickly separated from the incandescent filament 35 after the burning test; the smoke exhaust mechanism 6 composed of the pipe body 61, the smoke exhaust pipe 62, the smoke exhaust fan 63, the gas permeable pipe 64, the dust collecting ring 65, the smoke dust filter plate 66, the sealing plate 67 and the boss 68 is convenient for the smoke exhaust fan 63 installed in the smoke exhaust pipe 62 to exhaust the air in the pipe body 61 upward, so that the smoke in the box body 1 is exhausted by the smoke exhaust mechanism 6, the smoke dust filter plate 66 is installed in the gas permeable pipe 64 welded in the pipe body 61, the upper end of the smoke dust filter plate 66 is sleeved on the outside of the lower end of the smoke exhaust pipe 62, and the lower end of the smoke dust filter plate 66 is sleeved on the outside of the boss 68, so that the sealing plate 67 integrally formed on the lower end of the boss 68 is tightly attached to the lower surface of the dust collecting ring 65, the dust collecting ring 65 is welded on the lower end of the gas permeable pipe 64, so that the smoke dust filter plate 66 filters the air in the pipe body 61, and the dust collecting ring 65 is used to collect large particles in the smoke. During the test, the smoke generated after burning enters the pipe body 61 screwed in the inner threaded sleeve 5 through the gas permeable hole 7, the smoke enters the gas permeable pipe 64 under the action of the smoke exhaust fan 63, is filtered through the smoke dust filter plate 66, and the filtered air is exhausted through the smoke exhaust pipe 62. The pipe body 61 is installed in a screwed manner, so that the pipe body 61 is convenient for disassembly and replacement of the smoke dust filter plate 66.

[0028] In the embodiment, the pneumatic telescopic part comprises a cylinder 22 mounted on the upper surface of the bottom plate 21, and a gas pump 23 mounted on the bottom of the box body 1, the gas outlet end of the gas pump 23 is connected with the gas inlet end of the cylinder 22, the telescopic end of the cylinder 22 is fixed with a telescopic rod 24, the end of the telescopic rod 24 away from the cylinder 22 is fixed with a support rod 25, a clamping part is mounted on the upper end of the support rod 25, a guide rod 26 is movably mounted in the hole at the end of the telescopic rod 24, the guide rod 26 is sleeved with a spring 27 outside, and the two ends of the spring 27 are fixed with the support rod 25 and the insulating plate 34 respectively.

[0029] In the embodiment, the guide rod 26 movably mounted in the hole at the end of the telescopic rod 24 is used to facilitate the discharge of the gas in the cylinder 22 after the gas pump 23 is powered off, so that the telescopic rod 24 fixed at the telescopic end of the cylinder 22 is reset under the action of the spring 27, thereby realizing the reset of the telescopic rod 24 with the clamping part through the support rod 25, and facilitating the quick separation of the clamping part from the to-be-tested plastic part 37 and the insulating plate 34.

[0030] In the embodiment, the clamping part comprises a support 28 fixed on the upper end of the support rod 25, a reverse double-thread rod 29 rotatably mounted on the support 28, two clamping plates 30 symmetrically arranged inside the support 28, threads at the two ends of the reverse double-thread rod 29 are screwed into the screw holes arranged on the two clamping plates 30 respectively, a sliding rod 31 for limiting the clamping plates 30 is fixed in the support 28, four supporting wheels 32 are symmetrically mounted on the lower end of the support 28, two parallel guide rail frames 33 are fixed on the upper surface of the bottom plate 21, and the supporting wheels 32 are located in the grooves arranged on the upper end of the guide rail frames 33, and grooves for limiting the to-be-tested plastic part 37 are arranged on the opposite surfaces of the clamping plates 30.

[0031] In the embodiment, the clamping part composed of the support 28, the reverse double-thread rod 29, the clamping plates 30 and the sliding rod 31 is used, the reverse double-thread rod 29 rotatably mounted on the support 28 is screwed into the screw holes arranged on the two clamping plates 30, thereby facilitating the mutual approach or separation of the two clamping plates 30 when the reverse double-thread rod 29 rotates, and the clamping of the to-be-tested plastic part 37 when the two clamping plates 30 approach each other, and the sliding rod 31 fixed in the support 28 is used to limit the clamping plates 30, thereby increasing the stability of the clamping plates 30 when moving.

[0032] In the embodiment, the cross section of the dust collecting ring 65 is in the shape of a "C" with the opening upward.

[0033] In the embodiment, the end of the guide rail frame 33 towards the insulating plate 34 is detachably provided with a dust collecting disc 8, and the dust collecting disc 8 is used to collect the dust falling from above during the test, thereby facilitating the cleaning work after the test.

[0034] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A glowing wire tester for testing the combustion performance of plastic materials, comprising a box (1), and a glowing wire testing mechanism (2) installed in the box (1) for testing the combustion of plastic materials, the surface of the box (1) is provided with a controller (3) and a transparent observation window (4), the upper end of the box (1) is welded with an internal threaded sleeve (5), and a smoke exhaust mechanism (6) is screwed in the internal threaded sleeve (5), characterized in that: The upper end of the box (1) is provided with a ventilation hole (7), and the ventilation hole (7) is located inside the internally threaded sleeve (5); The hot wire test mechanism (2) comprises a bottom plate (21) mounted at the bottom of the box (1), a quick reset pneumatic telescopic piece is mounted on the upper surface of the bottom plate (21), a clamping piece for clamping the plastic piece (37) to be tested is arranged on the telescopic part of the pneumatic telescopic piece, an insulating plate (34) is fixed on the upper surface of the bottom plate (21), a hot wire (35) is arranged on the upper part of the insulating plate (34), and the hot wire (35) is located at the side of the plastic piece (37) to be tested; and a terminal post (36) is arranged at the end of the hot wire (35). The smoke exhaust mechanism (6) comprises a pipe body (61) screwed in the internally threaded sleeve (5), a smoke exhaust pipe (62) is welded to the upper end of the pipe body (61), the lower end of the smoke exhaust pipe (62) extends into the interior of the pipe body (61), a smoke exhaust fan (63) for exhausting air upwards is mounted in the smoke exhaust pipe (62), a ventilation pipe (64) is welded in the pipe body (61), a dust collecting ring (65) is welded to the lower end of the ventilation pipe (64), a smoke dust filter plate (66) is mounted in the interior of the ventilation pipe (64), the upper end of the smoke dust filter plate (66) is inserted into the exterior of the lower end of the smoke exhaust pipe (62), a sealing plate (67) is arranged on the lower surface of the ventilation pipe (64), a boss (68) is integrally formed on the upper surface of the sealing plate (67), and the boss (68) is inserted into the interior of the lower end of the smoke dust filter plate (66).

2. The glowing wire tester for testing the combustion performance of plastic materials according to claim 1, characterized in that: The pneumatic telescopic piece comprises a pneumatic cylinder (22) mounted on the upper surface of the bottom plate (21), and a gas pump (23) mounted at the bottom of the box (1), the gas outlet end of the gas pump (23) is connected with the gas inlet end of the pneumatic cylinder (22), a telescopic rod (24) is fixed to the telescopic end of the pneumatic cylinder (22), a support rod (25) is fixed to the end of the telescopic rod (24) away from the pneumatic cylinder (22), the clamping piece is mounted on the upper end of the support rod (25), a guide rod (26) is movably mounted in the hole at the end of the telescopic rod (24), a spring (27) is sleeved on the exterior of the guide rod (26), and the two ends of the spring (27) are fixed with the support rod (25) and the insulating plate (34) respectively.

3. A glow wire apparatus for testing the burning behavior of plastic materials according to claim 2, characterized in that: The clamping piece comprises a support (28) fixed on the upper end of the support rod (25), a reverse double-threaded rod (29) is rotatably mounted on the support (28), two clamping plates (30) are symmetrically arranged in the support (28), the threads at the two ends of the reverse double-threaded rod (29) are screwed in the screw holes respectively formed in the two clamping plates (30), and a sliding rod (31) for limiting the clamping plates (30) is fixed in the support (28).

4. The glowing wire tester for testing the combustion performance of plastic materials according to claim 3, characterized in that: Four supporting wheels (32) are symmetrically mounted on the lower end of the support (28), and two parallel guide rail frames (33) are fixed on the upper surface of the bottom plate (21), and the supporting wheels (32) are located in the grooves formed on the upper end of the guide rail frames (33).

5. The glowing wire tester for testing the burning behavior of plastic materials according to claim 3, characterized in that: Grooves for limiting the plastic piece (37) to be tested are formed on the opposite surfaces of the clamping plates (30).

6. The glowing wire tester for testing the burning behavior of plastic materials according to claim 1, characterized in that: The cross section of the dust collecting ring (65) is in the shape of a "C" with the opening upward.

7. The glowing wire tester for testing the burning behavior of plastic materials according to claim 4, characterized in that: The dust collecting tray (8) is detachably arranged on one end of the guide rail frame (33) towards the insulation plate (34) and is used for receiving the dust falling from above during the test.

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