Ceramic tile bending tester

Abstract

The utility model relates to a ceramic tile breaking resistance testing machine, including processing platform, the bar stock subassembly etc., the bar stock subassembly includes the bar stock support and sets up the metal bar at the bottom of bar stock support, the outside of metal bar still is equipped with the rubber cover, and the both ends of metal bar are opened the axle hole along the axial direction respectively, a plurality of mounting holes are arranged at the bar stock support interval, and one mounting hole is located the center point of bar stock support, and at least one pin is assembled in the mounting hole, and the both ends of bar stock support are opened the threaded hole respectively, and the threaded hole and axle hole are jointly assembled with the lock pin spare, the utility model discloses the compression bar subassembly structure of the same structure center bar and support bar is used, and the same model metal bar can be arbitrarily interchanged, and the classification management is completely saved, the layout of bar stock support center and multiple mounting holes can adopt the tool -free quick -release structure, and can be completed with one insertion and one rotation, and the bar replacement time is greatly shortened.

Description

Technical Field

[0001] This utility model relates to the field of flexural strength testing technology, and in particular to a flexural strength testing machine for ceramic tiles. Background Technology

[0002] Currently, the three-point bending method is commonly used to test the flexural strength of ceramic tiles. The testing machine applies load to the tile sample through two cylindrical support rods and a central rod. According to industry standards, specific diameter support rods and a central rod must be matched for ceramic tile samples of different lengths: when the sample length is in the range of 18-48mm, a rod with a diameter of 5±1mm must be used, and the sample edge must extend 2mm beyond the rod; when the sample length is in the range of 48-95mm, the rod diameter must be adjusted to 10±1mm, and the extension length is 5mm; and when the sample length is ≥95mm, a rod with a diameter of 20±1mm must be used, and the extension length is increased to 10mm. This strict size matching requirement makes frequent rod changes a common occurrence during the test.

[0003] However, in existing technologies, both the center bar and support bar are designed as independent structures, and their connection to the main body of the testing machine is mostly by bolt fixing. This traditional structure has the following significant drawbacks: First, the bolt fixing method makes the bar replacement process cumbersome and time-consuming, requiring repeated disassembly and assembly with tools, which seriously affects testing efficiency; second, bars of different specifications need to be stored and managed separately, which not only occupies extra space but also easily leads to mixing errors due to unclear labeling. Therefore, it is necessary to design a testing machine structure that enables rapid bar replacement. Utility Model Content

[0004] In order to overcome the problems existing in the background art, the present invention provides a ceramic brick flexural strength testing machine.

[0005] Technical solution: A ceramic tile flexural strength testing machine includes a processing table, an arched frame and a horizontal adjusting slide are provided on the upper end of the processing table, a pressing mechanism is provided on the arched frame, a central connecting member is connected to the bottom of the pressing mechanism through a force sensor, two supporting connecting members are provided on the horizontal adjusting slide, and a bar assembly is detachably provided on the central connecting member and the two supporting connecting members respectively.

[0006] The bar assembly includes a bar support and a metal bar disposed at the bottom of the bar support. The outer side of the metal bar is also fitted with a rubber sleeve. Shaft holes are respectively opened at both ends of the metal bar along the axial direction. Several mounting holes are spaced apart on the bar support. One of the mounting holes is located at the center point of the bar support. At least one pin is installed in the mounting hole. Threaded holes are respectively opened at both ends of the bar support. Locking pins are installed in the threaded holes and the shaft holes. The locking pin consists of a tail striped end, a middle threaded end, and a front cylindrical end, wherein the threaded end is adapted to the threaded hole, and the cylindrical end is adapted to the shaft hole.

[0007] Furthermore, it is particularly preferred that the central connector is an inverted U-shaped lug with a central horizontal hole.

[0008] Furthermore, it is particularly preferred that the support connector includes a support body, the upper end of which is provided with multiple pairs of ear pieces at intervals, and each pair of ear pieces is provided with an ear hole.

[0009] Furthermore, it is particularly preferred that the horizontal adjusting slide includes two parallel slide rails and a lead screw disposed between the two slide rails. Each slide rail is provided with two sliders. The sliders on the same side of the two slide rails are connected by a connector, and a lead screw nut is mounted on the connector. The lead screw nut cooperates with the lead screw. The lead screw is provided with two symmetrical sections of threads with opposite directions. When the lead screw rotates, the two lead screw nuts move closer or further away synchronously. A handwheel is also provided at the end of the lead screw.

[0010] Furthermore, it is particularly preferred that the device also includes end limiting members symmetrically arranged at the upper ends of the two connectors. The end limiting members include an L-shaped limiting rod composed of a horizontal part and a vertical part. The horizontal part of the L-shaped limiting rod has a vertical strip-shaped hole, in which a screw is fitted. The connector has a locking screw hole adapted to the screw. The side of the horizontal part of the L-shaped limiting rod is marked with a distance scale I. The connector is provided with a pointer I pointing to the distance scale I.

[0011] Furthermore, it is particularly preferred that the processing table is also provided with a scale plate, on which two distance scales II are symmetrically marked with the midpoint as the zero mark, and pointers II pointing to the two distance scales II are respectively installed on the two support bodies.

[0012] Furthermore, it is particularly preferred that the thickness of the rubber includes 1 mm, 2.5 mm, and 5 mm.

[0013] Furthermore, it is particularly preferred that one of the bar components is movably mounted on the central transverse hole of the inverted U-shaped lifting lug via a pin.

[0014] Furthermore, it is particularly preferred that one of the bar stock assemblies is movably mounted on one of the support bodies by means of a pin, and another bar stock assembly is fixedly mounted on another support body by means of a plurality of pins.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. This utility model uses a pressure bar assembly structure with identical central bar and support bar, which allows metal bars of the same model to be interchanged at will, completely eliminating the need for classification management; the layout of the center of the bar support and multiple sets of mounting holes can adopt a tool-free quick-release structure, which can be completed by simply inserting and twisting, greatly shortening the bar replacement time.

[0017] 2. This utility model uses an inverted U-shaped lifting lug and a central horizontal hole to allow the bar assembly suspended on the U-shaped lifting lug to swing slightly, automatically adapting to the thickness error of the tile and reducing the risk of edge cracking.

[0018] 3. This utility model, by setting multiple pairs of lugs on the support connector to form an array of hanging points, can either install on the central lug to form a micro-oscillating structure, offsetting the lateral force generated during bending and preventing the ceramic from cracking due to lateral compression, or use an installation method in which multiple sets of lugs are connected together, providing a stable bending reference.

[0019] 4. This utility model utilizes a bidirectional lead screw-handwheel linkage, allowing for simultaneous adjustment of the distance between the two support connectors with a single hand rotation, resulting in high positioning accuracy and effortless operation. Furthermore, the L-shaped limit rod and distance scale I ensure precise positioning of the tile end, reducing extension length errors and guaranteeing consistent testing conditions. Additionally, the scale plate and pointer II display the distance between the two support points in real time, with the zero mark centered for intuitive readings, avoiding the need for multiple measurements.

[0020] 5. This utility model uses rubber sleeves of three thicknesses: 1mm, 2.5mm, and 5mm, which can be matched with metal rods of different diameters to provide uniform cushioning and prevent hard contact indentations.

[0021] 6. This utility model uses a pin to movably hinge the central rod assembly to the inverted U-shaped lifting lug, automatically aligning itself during bending, reducing additional bending moment, and improving data accuracy. Furthermore, the support layout, with one side movably hinged and the other side fixed pin connected, forms a floating and fixed support system, releasing lateral stress while ensuring a stable bending trajectory. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0023] Figure 2 This is a schematic diagram of the structure of the bar stock assembly of this utility model.

[0024] Figure 3This is a partial exploded view of the bar stock assembly of this utility model.

[0025] Figure 4 This is a schematic diagram of the inverted U-shaped lifting lug of this utility model.

[0026] Figure 5 This is a schematic diagram of the structure of the horizontal adjustment slide, support body, end limiting member and scale plate of this utility model.

[0027] Figure 6 This is a schematic diagram of the end limiting component of this utility model.

[0028] Figure 7 This is a schematic diagram of the structure of the support body of this utility model.

[0029] The above-mentioned figures include the following reference numerals: 1. Processing table; 11. Arched frame; 12. Pressing mechanism; 13. Force sensor; 2. Horizontal adjustment slide; 21. Slide rail; 22. Lead screw; 23. Slider; 24. Connector; 25. Lead screw nut; 26. Handwheel; 3a, 3b, 3c. Bar stock assembly; 31. Bar stock support; 311. Mounting hole; 312. Threaded hole; 32. Metal bar; 321. Shaft hole; 3 3. Rubber sleeve; 34. Pin; 35. Locking pin; 351. Pull-out end; 352. Threaded end; 353. Cylindrical end; 4. Inverted U-shaped lifting lug; 41. Center horizontal hole; 5. Support body; 51. Ear piece; 52. Ear hole; 6. End limiting component; 61. L-shaped limiting rod; 611. Vertical strip hole; 62. Screw; 63. Distance scale I; 64. Pointer I; 7. Scale plate; 71. Distance scale II; 72. Pointer II. Detailed Implementation

[0030] Although this invention may be described with respect to a particular application or industry, those skilled in the art will recognize its broader applicability. Those skilled in the art will understand that terms such as "above," "below," "upward," "downward," etc., are used to describe the drawings and not to indicate a limitation on the scope of the invention as defined by the appended claims. Any numerical designations such as "first" or "second" are merely illustrative and not intended to limit the scope of the invention in any way.

[0031] like Figure 1-7The ceramic tile flexural strength testing machine shown includes a processing table 1. An arched frame 11 is fixed to the center of the table surface by bolts. A pressing mechanism 12 is installed on the crossbeam of the arched frame 11. In this embodiment, a cylinder is selected as the pressing mechanism 12. The push rod end of the pressing mechanism 12 is connected to an S-type force sensor 13 by a thread. The lower end of the force sensor 13 is then connected to an inverted center connector by a thread. Specifically, the center connector is an inverted U-shaped lifting lug 4. The two side walls of the inverted U-shaped lifting lug 4 are symmetrically provided with center transverse holes 41 for inserting pins 34 to realize the hinged suspension of the center bar assembly 3a. The cotter pin at the tail of the pin 34 limits the movement, allowing the center bar assembly 3a to swing freely within a range of ±5°.

[0032] refer to Figure 1 and Figure 5 The table surface of the processing table 1 is fixed with bolts to the horizontally adjustable slide table 2. The slide table consists of two parallel slide rails 21, a central bidirectional lead screw 22, and a handwheel 26. The two ends of the lead screw 22 are left and right symmetrical threads with a pitch of 2mm. When the handwheel 26 is rotated one revolution, the left and right lead screw nuts 23 drive the connecting parts 24 to move synchronously towards or away from each other by 4mm. Each slide rail 21 is equipped with two sliders 23. The sliders 23 on the same side are connected as one piece by aluminum alloy connecting parts 24. The top of the connecting parts 24 is connected to the supporting connecting parts by bolts.

[0033] For details, please refer to the following: Figure 7 The support connector specifically includes a support body 5, which is a concave rectangular steel plate. At least three pairs of lugs 51 are equidistantly arranged on the upper surface along the length direction, with a spacing of 10mm between adjacent lugs 51. Each pair of lugs 51 has a lug hole 52. The left support body 5 uses a pair of central lug holes 52, which are hinged to the left support rod assembly 3b through a single pin 34 to form a floating support. The right support body 5 uses lug holes 52 at both ends, which are rigidly fixed to the right support rod assembly 3c through two pins 34 to form a fixed rotation shaft.

[0034] refer to Figure 2 and Figure 3 It is particularly important to note that the bar stock assemblies 3a, 3b, and 3c have identical structures. Their specific structures include a bar stock support 31 and a metal bar 32. The bar stock support 31 is a stainless steel rectangular block with at least three mounting holes 311 in the center and on both sides. In this embodiment, seven mounting holes 311 are provided. The bottom of the bar stock support 31 is milled to install the metal bar 32. The two ends of the metal bar 32 are drilled with shaft holes 321, and the surface is fitted with a 1-5mm thick neoprene rubber sleeve 33. A locking pin 35 is used to assemble the metal bar 32 into the bar stock support 31. The tail of the locking pin 35 is a knurled cylinder for easy hand tightening. The middle M4 threaded end 352 mates with the threaded hole 312 of the support, and the front cylindrical end 353 is inserted into the shaft hole 321 to achieve quick release of the metal bar 32.

[0035] In a preferred embodiment, the rubber thickness specifically includes three specifications: 1mm, 2.5mm, and 5mm, which are applicable to three different sizes of ceramic tiles.

[0036] In order to quickly place ceramic tiles, this device also has an end limiting member 6, a straight groove milled on the top of the connector 24, the horizontal part of the L-shaped limiting rod 61 is inserted into the groove, the horizontal part of the L-shaped limiting rod 61 has a vertical strip hole 611, the vertical strip hole 611 is fitted with a screw 62, and the lower end of the screw 62 is screwed into the locking screw hole of the connector 24.

[0037] refer to Figure 6 The horizontal portion of the L-shaped limiting rod 61 is laser-etched with a distance scale I63. A pointer I64 is mounted on the side of the connector 24. The pointer I64 pointing to the distance scale I63 indicates the length of the end of the ceramic tile extending beyond the metal rod 32. When testing ceramic tiles with a length greater than 95mm, the vertical portions of the two L-shaped limiting rods 61 are adjusted to be 10mm from the left and right metal rods 32 respectively and locked.

[0038] The scale plate 7 is fixed on the upper end of the processing table 1. The zero mark of the scale plate 7 is centered, and 500mm distance scales II 71 are engraved on the left and right. The front end of the support body 5 is equipped with a pointer II 72, which is aligned with the distance scales II 71 on the scale plate 7 in real time as the slide moves, making it easy to read.

[0039] When testing tiles with an L=600mm diameter, a 20mm outer diameter metal rod 32 and its matching 5mm thick rubber sleeve 33 are respectively assembled onto the inverted U-shaped lifting lugs 4 and left and right ear pieces 51 on the rod assemblies 3a, 3b, and 3c. Then, the extension length of the L-shaped limiting rod 61 is adjusted to 10mm, and the screw 62 is tightened. The tile is then placed between the left support rod assembly 3b and the right support rod assembly 3c. Subsequently, the handwheel 26 is turned to move the left support rod assembly 3b and the right support rod assembly 3c... c. Move towards the center until the two end limiters 6 abut against the sides of the tile, and observe the pointer II 72 and the distance scale II 71 to confirm whether the relative positions of the tile and the left support rod assembly 3b and the right support rod assembly 3c are consistent. At this time, the pointer II 72 points to the 290mm mark on the scale plate 7, and the distance between the metal rods 32 of the left support rod assembly 3b and the right support rod assembly 3c is 580mm. Start the pressing mechanism 12, and the center rod assembly 3a is pressed down to complete the bending resistance test.

[0040] The embodiments described above are merely preferred embodiments of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications, improvements, and substitutions without departing from the inventive concept, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A ceramic tile bending resistance testing machine, comprising a processing table (1), an arched frame (11) and a horizontal adjusting sliding table (2) are arranged at the upper end of the processing table (1), a pressing mechanism (12) is arranged on the arched frame (11), a center connecting piece is connected to the bottom of the pressing mechanism (12) through a force sensor (13), two supporting connecting pieces are arranged on the horizontal adjusting sliding table (2), and bar assemblies (3a, 3b, 3c) are respectively detachably arranged on the center connecting piece and the two supporting connecting pieces, characterized in that, The bar assembly (3a, 3b, 3c) includes a bar support (31) and a metal bar (32) disposed at the bottom of the bar support (31). A rubber sleeve (33) is fitted over the outer side of the metal bar (32). Shaft holes (321) are respectively opened at both ends of the metal bar (32) along the axial direction. Several mounting holes (311) are spaced apart on the bar support (31), one of which is located at the center point of the bar support (31). At least one pin (34) is assembled in the 311). The two ends of the bar support (31) are respectively provided with threaded holes (312). The threaded holes (312) and the shaft hole (321) are jointly equipped with locking pins (35). The locking pins (35) are composed of a tail striped end (351), a middle threaded end (352) and a front cylindrical end (353). The threaded end (352) is adapted to the threaded hole (312), and the cylindrical end (353) is adapted to the shaft hole (321).

2. The ceramic tile flexural strength testing machine according to claim 1, characterized in that, The central connector is an inverted U-shaped lug (4), and a central horizontal hole (41) is provided on the inverted U-shaped lug (4).

3. The ceramic tile flexural strength testing machine according to claim 2, characterized in that, The support connector includes a support body (5), and the upper end of the support body (5) is provided with multiple pairs of ear pieces (51) spaced apart, and each pair of ear pieces (51) is provided with an ear hole (52).

4. The ceramic tile flexural strength testing machine according to claim 3, characterized in that, The horizontal adjustment slide (2) includes two parallel slide rails (21) and a lead screw (22) between the two slide rails (21). Each slide rail (21) is provided with two sliders (23). The two sliders (23) on the same side of the two slide rails (21) are connected by a connector (24), and a lead screw nut (25) is mounted on the connector (24). The lead screw nut (25) cooperates with the lead screw (22). The lead screw (22) is provided with two symmetrical threads with opposite directions of rotation. When the lead screw (22) rotates, the two lead screw nuts (25) move closer or further away synchronously. A handwheel (26) is also provided at the end of the lead screw (22).

5. The ceramic tile flexural strength testing machine according to claim 4, characterized in that, It also includes end limiting members (6) symmetrically arranged on the upper ends of the two connectors (24). The end limiting member (6) includes an L-shaped limiting rod (61) composed of a horizontal part and a vertical part. The horizontal part of the L-shaped limiting rod (61) has a vertical strip hole (611). A screw (62) is installed in the vertical strip hole (611). The connector (24) has a locking screw hole adapted to the screw (62). The side of the horizontal part of the L-shaped limiting rod (61) is marked with a distance scale I (63). The connector (24) is provided with a pointer I (64) pointing to the distance scale I (63).

6. The ceramic tile flexural strength testing machine according to claim 5, characterized in that, The processing table (1) is also provided with a scale plate (7). The scale plate (7) has two symmetrical distance scales II (71) with the midpoint as the zero mark. The two support bodies (5) are respectively equipped with pointers II (72) pointing to the two distance scales II (71).

7. The ceramic tile flexural strength testing machine according to claim 6, characterized in that, The thickness of the rubber includes 1 mm, 2.5 mm and 5 mm.

8. The ceramic tile flexural strength testing machine according to claim 7, characterized in that, One of the said bar stock assemblies (3a, 3b, 3c) is movably mounted on the central transverse hole (41) of the inverted U-shaped lifting lug (4) via a pin (34).

9. The ceramic tile flexural strength testing machine according to claim 8, characterized in that, One of the bar stock assemblies (3a, 3b, 3c) is movably mounted on one of the support bodies (5) by means of a pin (34), and another bar stock assembly (3a, 3b, 3c) is fixedly mounted on another support body (5) by means of multiple pins (34).

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