Support for toy combustion test device and toy combustion test device

Abstract

The utility model discloses a support for a toy combustion test device and the toy combustion test device, and belongs to the technical field of toy detection equipment. In a toy combustion test, the position and the angle of a toy to be tested are difficult to flexibly and accurately adjust by the existing bracket, and the existing bracket and the existing clamp only can clamp in parallel due to various sizes and shapes of plush toys, so that the multi-angle combustion test requirement cannot be met. The support comprises a mounting base plate, a Y-axis guide rail, a Z-axis guide rail, a horizontal supporting assembly, an oblique angle supporting assembly and the like. The Y-axis guide rail and the Z-axis guide rail can achieve sliding of the sliding block and are matched with the lead screw and the driving motor to conduct accurate position adjustment. The horizontal supporting assembly and the oblique angle supporting assembly are provided with linear guide rails and clamps, and the clamping requirements of toys with different sizes and special shapes can be met. The test device comprises a test box body, a smoke exhaust channel, a combustion spray gun, a bracket and the like, is mainly used for a toy combustion test, and provides stable and flexible support and a good test environment for the test.

Description

Technical Field

[0001] This utility model relates to the field of toy testing equipment technology. More specifically, this utility model relates to a bracket for a toy combustion testing device and a toy combustion testing device. Background Technology

[0002] In the toy manufacturing process, to ensure children's safety, toys need to undergo combustion tests to assess their performance under flammability. However, existing toy combustion testing equipment has some problems in its use.

[0003] Currently, some testing devices have relatively simple support structures and lack flexible position adjustment capabilities. During testing, it is difficult to precisely adjust the position and angle of the toys according to their different shapes, sizes, and testing requirements. For example, for some irregularly shaped toys, existing supports may not be able to accurately place them in the appropriate burning position, leading to inaccurate combustion test results that fail to truly reflect the toy's combustion performance.

[0004] Plush toys, in particular, come in a wide variety of sizes and shapes. When conducting flammability tests, it's sometimes necessary to test from multiple angles to comprehensively evaluate their flammability. However, existing supports and clamps can only hold the toy in parallel, meaning the two clamps are on the same horizontal line. This clamping method cannot meet the needs of multi-angle flammability testing for plush toys of different shapes and irregularities. When flammability testing is required at special angles such as the sides or inclined surfaces of the toy, the existing parallel clamping method cannot stably hold the toy at the required angle, thus affecting the accuracy and completeness of the test.

[0005] The main reason for this problem is that existing support designs are mostly tailored to specific types or sizes of toys, lacking versatility and flexibility. The diversity of toys and the complexity of testing were not fully considered during the design process. Furthermore, when different parts need to be tested for combustion, existing supports are difficult to adjust quickly and accurately, significantly reducing testing efficiency. Utility Model Content

[0006] One object of this invention is to solve at least the problems described above and to provide at least the advantages that will be explained later.

[0007] To achieve these objectives and other advantages according to the present invention, a support for a toy combustion testing apparatus is provided, comprising:

[0008] The mounting substrate is disposed within the test apparatus;

[0009] A Y-axis guide rail is mounted on the mounting base plate. A Y-axis slider, a Y-axis lead screw threadedly engaged with the Y-axis slider, and a first drive motor for driving the Y-axis lead screw to rotate are slidably mounted on the Y-axis guide rail.

[0010] The Z-axis guide rail is vertically mounted on the Y-axis slider. The Z-axis guide rail is slidably provided with a Z-axis slider, a Z-axis lead screw threadedly engaged with the Z-axis slider, and a second drive motor that drives the Z-axis lead screw to rotate.

[0011] A horizontal support assembly includes a horizontal cantilever disposed on the Z-axis slider and a first linear guide disposed on the cantilever;

[0012] An angled support assembly includes an angled brace set at a preset angle on the Z-axis slider and a second linear guide rail set on the angled brace. The angled support assembly is located above the horizontal support assembly. At least two clamps are movably provided on both the second linear guide rail and the first linear guide rail.

[0013] A length measuring device includes a scale rod rotatably connected to the top of the Z-axis guide rail via a connector, and the surface of the scale rod is provided with scale lines;

[0014] The Y-axis lead screw axis is parallel to the bottom surface of the test device, and the Z-axis lead screw axis is perpendicular to the bottom surface of the test device.

[0015] Preferably, the first linear guide and the second linear guide have the same structure, both including:

[0016] A U-shaped groove is formed at the top of the cantilever beam or the diagonal brace. Guide grooves are symmetrically formed on both sides of the U-shaped groove. The guide grooves are arranged along the length direction of the U-shaped groove. A rack is provided at the bottom of the U-shaped groove. The length direction of the rack is consistent with the guide groove. The tooth surface of the rack faces the opening direction of the U-shaped groove.

[0017] At least two independently configured drive shafts, both ends of which slide through the guide groove, and a gear is coaxially sleeved on the drive shaft, the gear meshing with the rack, and a handwheel is provided at the outer end of the drive shaft;

[0018] The clamp is rotatably connected to the drive shaft via a clamp mounting base and is located at one end of the handwheel;

[0019] A cover plate covering the U-shaped groove is fixed to the top surface of the cantilever beam or the diagonal brace.

[0020] Preferably, the side wall of the Y-axis guide rail is provided with a C-shaped slide rail extending along the Y-axis, and a plurality of spaced cable follower sliders are slidably fitted inside the C-shaped slide rail.

[0021] Each cable follower slider is provided with a bracket, and the bracket is provided with a wire loop, wherein the cable of the second drive motor passes through each wire loop in sequence.

[0022] Preferably, the C-shaped slide rail is provided with limit blocks at both ends, and the distance between the cable follower sliders is 200-300mm.

[0023] Preferably, the inner wall of the conductor ring is embedded with a polytetrafluoroethylene wear-resistant layer.

[0024] Preferably, the length measuring device further includes:

[0025] A gearbox is vertically mounted at the top of the Z-axis guide rail. The gearbox contains a driving gear and a driven gear that mesh with each other, and the gearbox is axially parallel to the Z-axis guide rail axis. The number of teeth on the driving gear is less than the number of teeth on the driven gear.

[0026] A horizontal extension arm, one end of which is connected to the input shaft of the drive wheel via a bushing, and the other end extends to form a suspension section, wherein the scale rod is vertically set on the suspension section, and the axis of the scale rod maintains a horizontal distance of 200-300mm from the axis of the Z-axis guide rail.

[0027] Preferably, the ruler rod is made of stainless steel, the surface of the ruler rod is coated with an anti-oxidation black background coating, and the scale lines are fluorescent scale lines.

[0028] Preferably, it also includes a dust collection trough disposed below the horizontal cantilever and the diagonal brace and located on the mounting base plate, wherein the upper and lower surfaces of the dust collection trough are provided with fireproof ceramic layers.

[0029] A toy combustion testing apparatus including the aforementioned support is provided, comprising:

[0030] The test chamber has a side operating door hinged to it, and the side operating door is equipped with a front observation window and a heat-resistant handle.

[0031] A smoke exhaust duct runs through the test chamber and connects to an external ventilation system.

[0032] A combustion spray gun is installed in the operating area of ​​the test chamber;

[0033] The mounting base plate is fixed to the operating area of ​​the test chamber.

[0034] This utility model has at least the following beneficial effects:

[0035] Firstly, the linear guides (first and second linear guides) and clamps on the horizontal and angled support components provide multiple options for securing the toys. Different clamps can move along the linear guides (first and second linear guides), and through horizontal and angled support methods, they can adapt to the clamping needs of toys of various sizes and irregular shapes. In particular, they meet the needs of multi-angle burning tests on plush toys, ensuring that the toys remain stable during the burning test and avoiding the impact of shaking on the test results.

[0036] Secondly, the design of the length measuring device allows for convenient measurement of the toy's dimensions (burning length) during the experiment, eliminating the need for additional measuring tools, reducing measurement errors, and improving experimental efficiency. Finally, the entire support structure is compact and installed within the testing apparatus, effectively utilizing space and providing a stable and flexible support platform for toy burning tests.

[0037] Third, the ash collection trough effectively collects the ash produced by the burning toys, preventing ash from scattering, reducing contamination inside the testing device, and lowering cleaning difficulty and maintenance costs. The fire-resistant ceramic layers on the upper and lower surfaces effectively isolate high-temperature ash from other components of the device, reducing the risk of fire and ensuring the safety of the testing device.

[0038] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0039] Figure 1 This is a side view of the test device according to one of the technical solutions of this utility model;

[0040] Figure 2 This is a side view of the bracket according to one of the technical solutions of this utility model; the dashed line indicates the state of the ruler rod when it is used for measurement.

[0041] Figure 3 This is a top view of the horizontal support component and the angled support component according to one of the technical solutions of this utility model.

[0042] Figure 4 This is a detailed view of the first linear guide rail according to one of the technical solutions of this utility model;

[0043] Figure 5 This is a detailed view of the side of the first linear guide rail according to one of the technical solutions of this utility model;

[0044] Figure 6 This is a detailed view of the C-shaped slide rail and the cable-following slider, which are one of the technical solutions of this utility model.

[0045] Reference numerals in the accompanying drawings: bracket 200, mounting base plate 21, Y-axis guide rail 22, Z-axis guide rail 26, second drive motor 27, horizontal support assembly 300, horizontal cantilever 31, angled support assembly 400, clamp 600, length measuring device 500, scale rod 51, U-shaped slide 32, guide groove 33, rack 34, drive shaft 35, gear 36, handwheel 37, C-shaped slide rail 23, cable follower slider 24, bracket 25, gearbox 52, horizontal extension arm 53, test chamber 100, side operating door 11, front observation window 12. Detailed Implementation

[0046] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0047] It should be noted that, unless otherwise specified, the experimental methods described in the following embodiments are all conventional methods, and the reagents and materials described are all commercially available unless otherwise specified. In the description of this utility model, the orientation or positional relationship indicated by the terms is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0048] like Figures 1-6 As shown, this utility model provides a bracket for a toy combustion test device, comprising:

[0049] Mounting substrate 21 is disposed within the test apparatus;

[0050] Y-axis guide rail 22 is disposed on the mounting base plate 21. Y-axis slider, Y-axis lead screw threadedly engaged with Y-axis slider, and first drive motor for driving Y-axis lead screw to rotate are slidably disposed on Y-axis guide rail 22.

[0051] Z-axis guide rail 26 is vertically mounted on Y-axis slider. Z-axis slider, Z-axis lead screw threadedly engaged with Z-axis slider, and second drive motor 27 driving Z-axis lead screw rotation are slidably mounted on Z-axis guide rail 26.

[0052] The horizontal support assembly 300 includes a horizontal cantilever 31 disposed on the Z-axis slider and a first linear guide rail disposed on the cantilever;

[0053] An angled support assembly 400 includes an angled brace set at a preset angle on the Z-axis slider and a second linear guide rail set on the angled brace. The angled support assembly 400 is located above the horizontal support assembly 300. At least two clamps 600 are movably provided on both the second linear guide rail and the first linear guide rail.

[0054] The length measuring device 500 includes a scale rod 51 rotatably connected to the top of the Z-axis guide rail 26 via a connector, and the surface of the scale rod 51 is provided with scale lines.

[0055] The Y-axis lead screw axis is parallel to the bottom surface of the test device, and the Z-axis lead screw axis is perpendicular to the bottom surface of the test device.

[0056] In the above technical solution, firstly, the Y-axis guide rail 22 and Z-axis guide rail 26, in conjunction with the lead screws (Y-axis lead screw and Z-axis lead screw) and drive motors (first drive motor and second drive motor 27), enable precise movement of the sliders (Y-axis slider and Z-axis slider) in the Y-axis and Z-axis directions. This allows the bracket 200 to flexibly adjust the position and height of the toy according to the shape of different toys and test requirements, improving the adaptability and accuracy of the test. Secondly, the linear guide rails (first linear guide rail and second linear guide rail) and clamps 600 on the horizontal support assembly 300 and the angled support assembly 400 provide multiple options for fixing the toy. Different clamps 600 can move along the linear guide rails (first linear guide rail and second linear guide rail), and through horizontal and angled support methods, they can adapt to the clamping needs of toys of various sizes and irregular shapes, especially meeting the needs of multi-angle burning tests of plush toys, ensuring that the toy remains stable during the burning test and avoiding the influence of shaking on the test results. Furthermore, the design of the length measuring device 500 allows for convenient measurement of the toy's dimensions (burning length) during the test without the need for additional measuring tools, reducing measurement errors and improving test efficiency. Finally, the entire support 200 has a compact structure and is installed within the test apparatus, effectively utilizing space and providing a stable and flexible support platform for toy burning tests.

[0057] Specifically, the mounting base 21 is the foundation of the entire support 200, and it is installed inside the testing apparatus. The mounting base 21 can be made of a high-strength metal material, such as stainless steel, to withstand the weight of subsequent components and various forces during the test. It is fixed to a designated position within the testing apparatus by bolts. The mounting holes on the base are pre-machined to correspond to the mounting positions within the testing apparatus, and the bolts are tightened accordingly.

[0058] The Y-axis guide rail 22 is mounted on the mounting base plate 21. When the first drive motor starts, it drives the Y-axis lead screw to rotate. Due to the threaded engagement between the Y-axis lead screw and the Y-axis slider, the rotation of the Y-axis lead screw is converted into linear motion of the Y-axis slider on the Y-axis guide rail 22. This motion method can achieve precise position control. For example, during a toy burning test, if it is necessary to move the toy to a specific position in the horizontal direction, the movement of the Y-axis slider can be achieved by controlling the first drive motor, thereby adjusting the position of the entire bracket 200 in the Y-axis direction. The guide rail type can be a linear ball bearing guide rail, which has advantages such as high precision, low friction, and smooth movement. For example, a linear ball bearing guide rail of model HGH20CA can be selected, and its length can be customized according to actual needs. The first drive motor can be a stepper motor, which can precisely control the rotation angle and number of turns of the lead screw, thereby achieving precise position control of the slider. For example, a 57 series stepper motor can be selected, connected to the Y-axis lead screw through a coupling, transmitting the rotational motion of the motor to the lead screw.

[0059] The Z-axis guide rail 26 is vertically mounted on the Y-axis slider. When the second drive motor 27 is started, it drives the Z-axis lead screw to rotate, causing the Z-axis slider to move linearly along the Z-axis guide rail 26. This allows the bracket 200 to be adjusted vertically to accommodate the needs of toy combustion tests at different heights. For example, for some taller toys, the Z-axis slider can be raised by controlling the second drive motor 27 to adjust the toy to a suitable height for the combustion test. The guide rail type can also be a linear ball bearing guide rail, such as the HGH15CA model, with the length determined according to the height of the test device and actual requirements. The second drive motor 27 also uses a stepper motor, such as a 42 series stepper motor, which is connected to the Z-axis lead screw via a coupling to realize the rotation of the lead screw and the vertical movement of the slider.

[0060] The horizontal support assembly 300 includes a horizontal cantilever 31 and a first linear guide rail. The horizontal cantilever 31 is mounted on a Z-axis slider and moves up and down as the Z-axis slider moves. The first linear guide rail is mounted on the horizontal cantilever 31, and at least two clamps 600 are movably mounted on the first linear guide rail. These clamps 600 can slide along the first linear guide rail, thereby adjusting the distance between them to accommodate toys of different widths. For toys of common shapes, the clamps 600 of the horizontal support assembly 300 can be used for parallel clamping. For some irregularly shaped toys, the position of the clamps 600 can be adjusted to better fix the toy in the horizontal direction. The clamps can be manual clamps 600, which are simple in structure and low in cost.

[0061] The angled support assembly 400 includes an angled strut and a second linear guide. The function of the angled support assembly 400 is to provide support and fixation for toys that need to be placed at an angle. For toys of various sizes and shapes, such as plush toys, when multi-angle burning tests are required, the clamps 600 on the angled support assembly 400 can be used to fix the toy at a suitable tilt angle. For example, to test the burning performance of the toy's side, the toy can be fixed at a certain tilt angle using the clamps 600 of the angled support assembly 400, allowing the flame to accurately act on the toy's side.

[0062] When dealing with oddly shaped or large toys, the angled support assembly 400 and the horizontal support assembly 300 work together to clamp them. For oddly shaped toys, such as those with protrusions, depressions, or irregular shapes, the relatively flat parts of the toy are initially secured by the clamps 600 of the horizontal support assembly 300. The toy is then placed on the horizontal cantilever 31, and the position of the clamps 600 on the first linear guide is adjusted to firmly hold the toy. Then, the position of the clamps 600 on the angled support assembly 400 is adjusted according to the toy's tilt angle and specific shape. The preset tilt angle of the angled support assembly 400 can provide a support angle different from the horizontal direction, allowing for further securing of the toy from the side or at an angle by the clamps 600 on the second linear guide. For example, if there is a large protrusion on one side of the toy, the clamp 600 of the horizontal support component 300 may not be able to fix it completely. In this case, the clamp 600 on the angled support component 400 can be moved to the protruding part and clamped from the upper or side angle, forming a combined force with the clamp 600 of the horizontal support component 300, so that the toy is stably fixed on the bracket 200.

[0063] For large toys, due to their significant weight, the horizontal support component 300 alone may not provide sufficient support. In this case, the angled support component 400 plays a crucial auxiliary supporting role. First, the toy is placed on the horizontal support component 300 and initially secured using its clamps 600. Then, the position of the angled support component 400 is adjusted so that the angle and height of its diagonal struts adapt to the shape and center of gravity of the toy. The clamps 600 on the second linear guide rail then support and secure the upper or side parts of the toy, distributing its weight, reducing the burden on the horizontal support component 300, and preventing the toy from wobbling or falling due to gravity.

[0064] When conducting a toy burning test, it is necessary to measure the burning length of the toy. This can be done by rotating the scale rod 51 to align it with the ignition position of the toy, then reading the scale lines to obtain the toy's position after burning, and calculating the burning length within the corresponding burning time.

[0065] In another technical solution, the first linear guide and the second linear guide have the same structure, both including:

[0066] A U-shaped groove 32 is formed at the top of the cantilever beam or the diagonal brace. Guide grooves 33 are symmetrically formed on both sides of the U-shaped groove 32. The guide grooves 33 are arranged along the length direction of the U-shaped groove 32. A rack 34 is provided at the bottom of the U-shaped groove 32. The length direction of the rack 34 is consistent with that of the guide groove 33. The tooth surface of the rack 34 faces the opening direction of the U-shaped groove 32.

[0067] At least two independently configured drive shafts 35, both ends of which slide through the guide groove 33, and a gear 36 is coaxially sleeved on the drive shaft 35, the gear 36 meshing with the rack 34, and a handwheel 37 is provided at the outer end of the drive shaft 35;

[0068] The clamp 600 is rotatably connected to the drive shaft 35 via a clamp mounting base and is located at one end of the handwheel 37;

[0069] A cover plate is used to cover the U-shaped groove 32, and the cover plate is fixed to the top surface of the cantilever beam or the diagonal brace.

[0070] In the above technical solution, the guide rail structure formed by the U-shaped slide 32 and the rack 34 provides stable guidance and support for the movement of the drive shaft 35 and the gear 36, ensuring that the clamp 600 can achieve precise linear movement and meet the clamping requirements of toys of different sizes. The drive shaft 35 and handwheel 37 allow the operator to control the movement of each drive shaft 35 as needed, increasing operational flexibility. For irregularly shaped toys, the position and angle of the clamp 600 can be adjusted more easily to achieve stable clamping. The self-locking function of the gear 36 and rack 34 is another core feature of this structure. After adjusting the position of the clamp 600, it can be ensured that the clamp 600 is stably positioned in the corresponding position, and will not shift even under certain external force interference, effectively avoiding the impact of clamp 600 position changes on the accuracy of test results. Finally, the cover plate protects the components inside the U-shaped slide 32 and also improves operational safety.

[0071] Specifically, a U-shaped groove 32 is precisely cut into the top of the cantilever beam or diagonal brace. Guide grooves 33 are symmetrically cut into the two side walls of the U-shaped groove 32, and these guide grooves 33 must be set along the length of the U-shaped groove 32, with the two guide grooves 33 parallel to each other. A rack 34 is installed at the bottom of the U-shaped groove 32, with its length aligned with the guide grooves 33 and its teeth facing the opening of the U-shaped groove 32. The rack 34 is accurately placed in the designated position and secured with bolts to ensure that it will not shift during long-term use, thus ensuring good meshing between the gear 36 and the rack 34. The length of the drive shaft 35 ensures that both ends can smoothly pass through the guide grooves 33, and space is reserved at the outer end for installing a handwheel 37.

[0072] Slides are provided or laid on both sides of the U-shaped slide 32 and below the guide groove 33. T-shaped sliders slide on the slides, bearing seats are installed on the T-shaped sliders, and bearings are installed on the bearing seats. Two bearings are coaxially sleeved on both ends of the drive shaft 35 to form a structural support for the drive shaft 35 to slide along the guide groove 33, ensuring that the drive shaft 35 can rotate flexibly and move smoothly in the guide groove 33.

[0073] A gear 36 is coaxially mounted on the drive shaft 35, and the gear 36 is keyed to the drive shaft 35 to ensure that the gear 36 is firmly fixed on the drive shaft 35. The module and number of teeth of the gear 36 are selected according to the parameters of the rack 34 to ensure the meshing accuracy between the gear 36 and the rack 34 and to ensure that the gear 36 can roll smoothly on the rack 34. A handwheel 37 is installed on the outer end of the drive shaft 35. The handwheel 37 is easy for the operator to grip and can be provided with anti-slip texture. The handwheel 37 is connected to the drive shaft 35 by bolts or a coupling to ensure a firm connection and that the operator can smoothly drive the drive shaft 35 to rotate when turning the handwheel 37.

[0074] A bearing is installed on the fixture mounting base, and the bearing is coaxially sleeved on the drive shaft 35 to ensure that the fixture 600 installed on the fixture mounting base can rotate flexibly within a certain range.

[0075] A cover plate is placed over the U-shaped slide 32 and fixed to the top surface of the cantilever beam or diagonal brace with bolts. The purpose of the cover plate is to protect the components inside the U-shaped slide 32 and prevent dust, debris, etc. from entering.

[0076] The self-locking function of gear 36 and rack 34 is achieved through the rational design of the tooth profile parameters of gear 36 and rack 34, as well as the friction coefficient of the materials. When the operator turns handwheel 37, handwheel 37 drives drive shaft 35 to rotate, and gear 36 on drive shaft 35 rolls on rack 34, thereby realizing the linear movement of drive shaft 35 along U-shaped slide groove 32, driving clamp 600 to the appropriate position. Because gear 36 and rack 34 have a self-locking function, when the operator stops turning handwheel 37, even if subjected to certain external force interference, gear 36 will not slide on rack 34 on its own, thus ensuring that clamp 600 can be stably positioned in the corresponding position. Specifically, the tooth profile module is a key parameter that determines the size of gear 36 and rack 34. Considering the actual load and space constraints of bracket 200 in the toy combustion test device, the module can be selected between 1-3mm. The pressure angle has an important influence on the force and self-locking performance of gear 36 and rack 34. Generally, the standard pressure angle is 20°, but in scenarios requiring self-locking, appropriately increasing the pressure angle can improve self-locking performance. The pressure angle can be designed to be 25°-30°. When the pressure angle increases, the normal force between the tooth surfaces increases, and the friction also increases accordingly, thus facilitating self-locking. However, an excessively large pressure angle can also lead to increased contact stress on the tooth surfaces, reducing the service life of gear 36 and rack 34. Therefore, a balance needs to be struck between self-locking performance and service life. The addendum coefficient and clearance coefficient affect the meshing of gear 36 and rack 34. For this scenario, the addendum coefficient can be chosen as 1, and the clearance coefficient as 0.25. This selection ensures good meshing clearance between gear 36 and rack 34, avoiding interference, and also facilitates the storage and flow of lubricating oil, reducing wear. The coefficient of friction between gear 36 and rack 34 is related to factors such as the surface condition of the materials and lubrication conditions. To achieve self-locking, a certain coefficient of friction needs to be maintained. Under dry friction conditions, the coefficient of friction between 45 steel and Q235 steel is approximately 0.15-0.2; with lubricating oil, the coefficient of friction can be reduced to 0.05-0.1. To ensure self-locking performance, an appropriate amount of high-viscosity lubricating oil, such as lithium-based grease, can be applied to the surfaces of gear 36 and rack 34 to increase the coefficient of friction, while also preventing rust and reducing wear.

[0077] In another technical solution, the Y-axis guide rail 22 is further provided with a C-shaped slide rail 23 extending along the Y-axis on its side wall, and a plurality of cable follower sliders 24 are slidably fitted inside the C-shaped slide rail 23.

[0078] Each cable follower slider 24 is provided with a bracket 25, and the bracket 25 is provided with a wire loop, wherein the cable of the second drive motor 27 passes through each wire loop in sequence.

[0079] In the above technical solution, the C-shaped slide rail 23 and the cable follower slider 24 enable the cable to move synchronously with the Y-axis guide rail 22, avoiding problems such as pulling and tangling caused by the movement of the Y-axis guide rail 22, ensuring the neatness and orderliness of the cable, and improving the overall aesthetics of the equipment. The bracket 25 and the wire ring provide stable support and guidance for the cable, reducing friction and collision between the cable and other components, reducing cable wear, and extending the cable's service life. Effective cable management reduces the risk of equipment failure due to cable faults, improves the reliability and stability of the testing device, and ensures the smooth progress of the test. Furthermore, it facilitates cable maintenance and inspection, allowing for quick and convenient operation when cable repair or replacement is required.

[0080] Specifically, determine the installation position of the C-shaped slide rail 23 on the side wall of the Y-axis guide rail 22, and fix the C-shaped slide rail 23 to the side wall of the Y-axis guide rail 22 with bolts. Install multiple cable follower sliders 24 one by one into the C-shaped slide rail 23. Before installation, lubricate the cable follower sliders 24 and the C-shaped slide rail 23 by applying an appropriate amount of lubricating oil to reduce friction during sliding. The cable follower sliders 24 should slide smoothly in the C-shaped slide rail 23 without any jamming. Install a bracket 25 on each cable follower slider 24. It can be fixed by welding or bolt connection. Then install a wire ring on the bracket 25. The installation position of the wire ring should be accurate to ensure that its central axis is consistent with the direction of the cable. The inner diameter of the wire ring should be selected according to the outer diameter of the cable to ensure that the cable can pass through smoothly without excessive gaps to prevent the cable from shaking inside the wire ring. Pass the cable of the second drive motor 27 through each wire ring in sequence. During installation, pay attention to the cable routing to avoid cable crossing or tangling. Also, allow sufficient cable length to accommodate the movement of the Y-axis guide rail 22.

[0081] In another technical solution, the C-shaped slide rail 23 is further provided with limiting blocks at both ends, and the spacing between the cable-following sliders 24 is 200-300mm. The limiting blocks at both ends of the C-shaped slide rail 23 effectively prevent the cable-following sliders 24 from sliding off the slide rail, avoiding serious problems such as cable pulling and breakage caused by slider derailment. This greatly improves the safety and stability of the testing device, reduces the risk of equipment failure, reduces the number of test interruptions due to equipment failure, and ensures the continuity of the testing process. Setting the spacing between the cable-following sliders 24 at 200-300mm avoids cable accumulation and tangling due to sliders being too close together, facilitating cable heat dissipation and daily maintenance inspection. It also prevents the cables from swaying and sagging due to insufficient support caused by sliders being too far apart, reducing cable wear, extending cable lifespan, and lowering maintenance costs. Simultaneously, it ensures a neat and aesthetically pleasing internal cable layout, improving the overall quality of the equipment.

[0082] In another technical solution, the inner wall of the conductor ring is further provided with a polytetrafluoroethylene (PTFE) wear-resistant layer. The extremely low coefficient of friction of PTFE significantly reduces the friction between the cable and the inner wall of the conductor ring, greatly reducing wear on the cable sheath caused by friction, effectively extending the cable's service life, and reducing the frequency and cost of cable replacement.

[0083] In another technical solution, the length measuring device 500 further includes:

[0084] A gearbox 52 is vertically mounted on the top of the Z-axis guide rail 26. The gearbox 52 contains a driving gear and a driven gear that mesh with each other, and the gearbox 52 is axially parallel to the axis of the Z-axis guide rail 26. The number of teeth on the driving gear is less than the number of teeth on the driven gear.

[0085] The horizontal extension arm 53 has one end connected to the input shaft of the drive wheel via a bushing, and the other end extends to form a suspension section. The scale rod 51 is vertically mounted on the suspension section, and the axis of the scale rod 51 maintains a horizontal distance of 200-300mm from the axis of the Z-axis guide rail 26.

[0086] In the above technical solution, the combination of gearbox 52, drive wheel, driven wheel, and horizontal extension arm 53 gives the scale rod 51 flexible rotation capability. Operators can easily rotate the scale rod 51 to a position close to the toy, clearly read the scale, effectively solving the problem of traditional devices being difficult to measure close to the toy, and greatly improving the convenience of measurement. The reasonable use of the drive wheel and driven wheel can accurately control the rotation speed of the horizontal extension arm 53, effectively avoiding the scale rod 51 from wobbling due to inertia during rotation, significantly reducing measurement errors and significantly improving measurement accuracy. The setting of a 200-300mm horizontal distance between the axis of the scale rod 51 and the axis of the Z-axis guide rail 26 optimizes the relative positional relationship between the scale rod 51 and the toy being measured. This not only facilitates measurement but also allows the scale rod 51 to be rotated to a safe position away from the toy during combustion tests, avoiding interference with the combustion test, further improving measurement efficiency and the scientific nature of the test.

[0087] Specifically, the gearbox 52 is fixed to the top of the Z-axis guide rail 26 using bolts. Holes need to be drilled beforehand at the corresponding positions on the top of the Z-axis guide rail 26 and the gearbox 52. Based on the weight of the horizontal extension arm 53 and the scale rod 51, and considering the required rotational resistance during actual operation, the gear ratio between the driving and driven gears is determined. The number of teeth on the driving and driven gears needs to be determined based on the actual balance setting of the scale rod 51. The gear ratio between the driven and driving gears can be appropriately increased; for example, the driving gear can be set to 15 teeth and the driven gear to 45 teeth.

[0088] The other end of the horizontal extension arm 53 extends to form a suspension section. The length of the suspension section is precisely designed based on the required 200-300mm horizontal distance between the axis of the scale rod 51 and the axis of the Z-axis guide rail 26. The shape of the suspension section can be flexibly designed as rectangular or circular according to actual use. Regardless of the shape, it must ensure sufficient strength and stability to support the scale rod 51 and meet measurement requirements. The scale rod 51 is vertically installed on the suspension section, ensuring that its axis maintains a precise 200-300mm horizontal distance from the axis of the Z-axis guide rail 26. The scale rod 51 is securely fixed to the suspension section using bolts. Holes are pre-drilled at corresponding positions on the scale rod 51 and the suspension section, and bolts are tightened. In actual operation, the rotating design allows the operator to easily rotate the horizontal extension arm 53, bringing the scale rod 51 closer to the measuring position of the toy for easy and clear reading of the scale; before the start of the combustion test, the scale rod 51 can be rotated to a position away from the toy to avoid damage to the scale rod 51, while ensuring that the combustion test is not disturbed and can proceed smoothly.

[0089] In another technical solution, the scale rod 51 is further made of stainless steel, and its surface is coated with an anti-oxidation black background coating. The graduation lines are fluorescent graduation lines. The stainless steel material effectively improves the corrosion resistance of the scale rod 51, making it less prone to oxidation and rust in complex testing environments, extending its service life, and reducing the frequency and cost of replacing it. The anti-oxidation black background coating not only further protects the surface of the scale rod 51 but also enhances the readability of the graduations through the contrast between the black background and the fluorescent graduation lines, facilitating accurate reading by operators. The fluorescent graduation lines can clearly glow in low-light environments, solving the problem of traditional graduation lines being difficult to see in low light conditions. Whether in daylight or night, indoors or in poorly lit testing areas, it ensures measurement accuracy and improves the reliability of test data.

[0090] Specifically, a suitable type of stainless steel, such as 304 stainless steel, is selected as the base material for the scale rod 51. 304 stainless steel has excellent corrosion resistance, effectively resisting the erosion of oxygen, moisture, and corrosive substances that may be present in the test environment, ensuring that the scale rod 51 will not easily rust or corrode during long-term use. The diameter of the scale rod 51 can be set to 8-12mm, with graduations distributed circumferentially for easy reading from all directions. The black background coating uses a coating with good anti-oxidation properties, such as a black silicone flame-retardant fire-retardant coating. It has excellent heat resistance, weather resistance, and oxidation resistance, effectively protecting the surface of the scale rod 51 from oxidation. It also has high temperature resistance and flame retardancy. At the same time, the black background helps to highlight the graduation lines and improve the readability of the graduations. The thickness of the black background coating is controlled between 0.2-0.5mm. The scale rod 51 has grooves formed on its surface by laser etching or mechanical engraving. The depth of the grooves is generally 0.1-0.2mm. Fluorescent paint is filled into the grooves of the scale lines and cured to form the scale lines.

[0091] In another technical solution, a further component is included: an ash collection trough located below the horizontal cantilever 31 and the diagonal brace, and situated on the mounting base 21. Both the upper and lower surfaces of the ash collection trough are coated with a fire-resistant ceramic layer. The ash collection trough effectively collects the ash produced by the burning toy, preventing ash from scattering, reducing contamination of the testing device's interior, and lowering cleaning difficulty and maintenance costs. The fire-resistant ceramic layers on the upper and lower surfaces effectively isolate the high-temperature ash from other components of the device, reducing the risk of fire and ensuring the safety of the testing device.

[0092] Specifically, based on the space beneath the horizontal cantilever 31 and the diagonal brace, the dimensions of the ash collection trough are precisely measured and designed. The length and width of the ash collection trough should ensure effective collection of ash falling from the burning toy. Its length can be slightly greater than the sum of the projected lengths of the horizontal cantilever 31 and the diagonal brace on the mounting base 21, while the width is determined according to the internal spatial layout of the test device, ensuring maximum ash collection without affecting the normal operation of other components. The main material of the ash collection trough is a metal with sufficient strength and corrosion resistance, such as stainless steel. Stainless steel can withstand the weight of the ash and potential high temperatures, is not easily deformed, and is corrosion-resistant, ensuring long-term stable use of the ash collection trough. Its thickness is generally between 1-2 mm, ensuring structural strength without being excessively heavy. The fire-retardant ceramic layers on the upper and lower surfaces are made of high-temperature resistant, fire-retardant ceramic materials, possessing good heat insulation and fire-retardant properties. The thickness of the fire-retardant ceramic layer is generally controlled between 2-5 mm, effectively providing fire protection without excessively increasing the weight and cost of the ash collection trough. Furthermore, anti-scalding handles can be installed on the symmetrical side walls of the ash collection trough to facilitate the removal and placement of ash by operators.

[0093] A toy combustion testing apparatus including the aforementioned support is provided, comprising:

[0094] The test chamber 100 has a side operating door 11 hinged to it, and the side operating door 11 is provided with a front observation window 12 and a heat-proof handle.

[0095] A smoke exhaust duct runs through the test chamber 100 and is connected to an external ventilation system;

[0096] A combustion spray gun is installed in the operating area of ​​the test chamber 100;

[0097] The mounting base plate 21 is fixed to the operating area of ​​the test chamber 100.

[0098] In the above technical solution, the side operating door 11, front observation window 12, and anti-scalding handle of the test chamber 100 greatly improve the convenience and safety of operation. Operators can easily open the side operating door 11 to place and remove toys, clearly observe the test process through the front observation window 12, and the anti-scalding handle effectively prevents burns. The connection between the smoke exhaust duct and the external ventilation system allows for timely removal of combustion fumes after the combustion test, improving the test environment and protecting the health of operators. The combustion torch is located in the operating area, facilitating flame control and meeting the combustion test requirements of different toys. Finally, the bracket 200 is installed in the operating area of ​​the test chamber 100, providing stable support for the toys and ensuring the accuracy of the test results. The entire device has a reasonable structure, improving the efficiency and reliability of toy combustion tests.

[0099] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A bracket for a toy combustion testing apparatus, characterized in that, include: The mounting substrate is disposed within the test apparatus; A Y-axis guide rail is mounted on the mounting base plate. A Y-axis slider, a Y-axis lead screw threadedly engaged with the Y-axis slider, and a first drive motor for driving the Y-axis lead screw to rotate are slidably mounted on the Y-axis guide rail. The Z-axis guide rail is vertically mounted on the Y-axis slider. The Z-axis guide rail is slidably provided with a Z-axis slider, a Z-axis lead screw threadedly engaged with the Z-axis slider, and a second drive motor that drives the Z-axis lead screw to rotate. A horizontal support assembly includes a horizontal cantilever disposed on the Z-axis slider and a first linear guide disposed on the cantilever; An angled support assembly includes an angled brace set at a preset angle on the Z-axis slider and a second linear guide rail set on the angled brace. The angled support assembly is located above the horizontal support assembly. At least two clamps are movably provided on both the second linear guide rail and the first linear guide rail. A length measuring device includes a scale rod rotatably connected to the top of the Z-axis guide rail via a connector, and the surface of the scale rod is provided with scale lines; The Y-axis lead screw axis is parallel to the bottom surface of the test device, and the Z-axis lead screw axis is perpendicular to the bottom surface of the test device.

2. The bracket for the toy combustion testing apparatus as described in claim 1, characterized in that, The first linear guide and the second linear guide have the same structure, both including: A U-shaped groove is formed at the top of the cantilever beam or the diagonal brace. Guide grooves are symmetrically formed on both sides of the U-shaped groove. The guide grooves are arranged along the length direction of the U-shaped groove. A rack is provided at the bottom of the U-shaped groove. The length direction of the rack is consistent with the guide groove. The tooth surface of the rack faces the opening direction of the U-shaped groove. At least two independently configured drive shafts, both ends of which slide through the guide groove, and a gear is coaxially sleeved on the drive shaft, the gear meshing with the rack, and a handwheel is provided at the outer end of the drive shaft; The clamp is rotatably connected to the drive shaft via a clamp mounting base and is located at one end of the handwheel; A cover plate covering the U-shaped groove is fixed to the top surface of the cantilever beam or the diagonal brace.

3. The bracket for the toy combustion testing apparatus as described in claim 2, characterized in that, Furthermore, the side wall of the Y-axis guide rail is provided with a C-shaped slide rail extending along the Y-axis, and multiple spaced cable follower sliders are slidably fitted inside the C-shaped slide rail; Each cable follower slider is provided with a bracket, and the bracket is provided with a wire loop, wherein the cable of the second drive motor passes through each wire loop in sequence.

4. The bracket for the toy combustion testing apparatus as described in claim 3, characterized in that, Furthermore, the C-shaped slide rail is provided with limit blocks at both ends, and the distance between the cable follower sliders is 200-300mm.

5. The bracket for a toy combustion testing apparatus as described in claim 3, characterized in that, Furthermore, the inner wall of the conductor ring is embedded with a polytetrafluoroethylene wear-resistant layer.

6. The bracket for a toy combustion testing apparatus as described in claim 1, characterized in that, Furthermore, The length measuring device further includes: A gearbox is vertically mounted at the top of the Z-axis guide rail. The gearbox contains a driving gear and a driven gear that mesh with each other, and the gearbox is axially parallel to the Z-axis guide rail axis. The number of teeth on the driving gear is less than the number of teeth on the driven gear. A horizontal extension arm, one end of which is connected to the input shaft of the drive wheel via a bushing, and the other end extends to form a suspension section, wherein the scale rod is vertically set on the suspension section, and the axis of the scale rod maintains a horizontal distance of 200-300mm from the axis of the Z-axis guide rail.

7. The bracket for a toy combustion testing apparatus as described in claim 1, characterized in that, Furthermore, the ruler rod is made of stainless steel, the surface of the ruler rod is coated with an anti-oxidation black background coating, and the scale lines are fluorescent scale lines.

8. The bracket for a toy combustion testing apparatus as described in claim 1, characterized in that, Furthermore, it also includes a dust collection trough located below the horizontal cantilever and the diagonal brace and on the mounting base plate, with fireproof ceramic layers on both the upper and lower surfaces of the dust collection trough.

9. A toy combustion testing apparatus comprising the support according to any one of claims 1 to 8, characterized in that, include: The test chamber has a side operating door hinged to it, and the side operating door is equipped with a front observation window and a heat-resistant handle. A smoke exhaust duct runs through the test chamber and connects to an external ventilation system. A combustion spray gun is installed in the operating area of ​​the test chamber; The mounting base plate is fixed to the operating area of ​​the test chamber.

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