Ceramic mud blank hardness testing device

Abstract

The utility model provides a portable ceramic mud blank hardness testing device, and belongs to the technical field of ceramic membrane preparation. The ceramic mud blank hardness testing device comprises a bracket, a hardness meter, a constant-speed linear motion mechanism, a transition connecting cylinder and a baffle plate, the bracket is vertically arranged; the durometer is arranged along the height direction of the bracket; the uniform linear motion mechanism is arranged along the height direction of the bracket, and the upper part is connected with the upper end of the bracket; a moving end is arranged below the constant-speed linear motion mechanism; the upper end of the transition connecting cylinder is detachably connected with the moving end of the constant-speed linear motion mechanism. The lower end of the transition connecting cylinder is detachably connected with the upper end of the durometer; the baffle is located under the hardness meter, and the plate face of the baffle is perpendicular to the height direction of the support and connected with the lower end of the support. The constant-speed linear motion mechanism, the transition connecting cylinder and the like are additionally arranged, and the hardness meter is driven to move by the constant-speed linear motion mechanism, so that compared with a handheld hardness meter for measurement, the hardness meter is not influenced by human factors, and the accuracy of a test result is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of ceramics, in particular to a device for testing the hardness of ceramic clay blanks. Background Art

[0002] The hardness of the clay in the ceramic production process has a great impact on the molding process and subsequent sintering shrinkage. In the past, the production process of ceramics relied on production personnel to press the clay with their fingers and judge the condition of the clay based on sensory experience. Later, technicians in this industry mainly used soil hardness testers to test the hardness of the clay in the production process as a parameter for production control. For example, the prior art discloses "A portable detection device for clay hardness" (publication number: CN204314166U, publication date: 2015-05-06).

[0003] However, the existing clay hardness tester needs to be inserted into the clay by hand by the tester to obtain the clay hardness result after reading the scale. Due to human factors, the speed of inserting the hardness tester into the clay is inconsistent, which leads to large fluctuations in the clay hardness test results. This is just the instability in the ceramic production process. Utility Model Content

[0004] The utility model provides a portable ceramic clay hardness test device to solve the problems existing in the prior art. The utility model adds a uniform linear motion mechanism, a transition connection tube, etc., and drives the hardness tester to move through the uniform linear motion mechanism. Compared with the measurement by a handheld hardness tester, there is no human factor influence, and the test result is more accurate.

[0005] The technical solution adopted by the utility model is:

[0006] A ceramic clay hardness testing device, comprising:

[0007] A bracket, wherein the bracket is arranged vertically;

[0008] A hardness tester, the hardness tester is arranged along the height direction of the bracket;

[0009] A uniform linear motion mechanism, the uniform linear motion mechanism is arranged along the height direction of the bracket, and the upper part thereof is connected to the upper end of the bracket; the lower part of the uniform linear motion mechanism is a moving end;

[0010] A transition connection tube, the upper end of which is detachably connected to the moving end of the uniform linear motion mechanism; the lower end of which is detachably connected to the upper end of the hardness tester;

[0011] The baffle is located directly below the hardness tester, and its plate surface is perpendicular to the height direction of the bracket and connected to the lower end of the bracket.

[0012] Furthermore, along the height direction of the bracket, a working window hole is provided on the baffle in the projection area of ​​the hardness tester.

[0013] Furthermore, the uniform linear motion mechanism is an electric push rod, a hydraulic cylinder, a pneumatic cylinder or a linear module.

[0014] Furthermore, the uniform linear motion mechanism is an electric push rod, which includes:

[0015] A protective shell, the protective shell being arranged at the upper end of the bracket; a second driven gear being arranged in the protective shell;

[0016] A lead screw motor, wherein the lead screw motor is arranged below the protective shell, and an output shaft thereof is located inside the protective shell; a driving gear is arranged on the output shaft of the lead screw motor;

[0017] A controller, the controller being electrically connected to the lead screw motor;

[0018] A protective sleeve, the protective sleeve is arranged below the protective shell and parallel to the lead screw motor;

[0019] A lead screw, the lead screw is located in the protective sleeve, and the axial centers of the two coincide with each other; the upper end of the lead screw is located in the protective housing and is provided with a first driven gear; the first driven gear, the second driven gear and the driving gear are meshed in sequence;

[0020] A slider is fitted on the lead screw, and its outer wall cooperates with the inner wall of the protective sleeve to enable the slider to move axially in a straight line along the inner wall of the protective sleeve without rotating synchronously with the lead screw; a piston cylinder is provided on the lower surface of the slider; the piston cylinder is located on the outer side of the lead screw, and the axial centers of the two coincide.

[0021] Furthermore, the lower end of the lead screw extends to the vicinity of the lower end of the protective sleeve and is provided with a circular support member; the diameter of the circular support member is consistent with the inner diameter of the piston cylinder, and the two are in sliding contact.

[0022] Further, the diameters of the first driven gear, the second driven gear and the driving gear decrease in sequence.

[0023] Furthermore, the inner diameter of the lower end of the transition connecting cylinder is consistent with the outer diameter of the piston cylinder, and the two are connected by a pin.

[0024] Furthermore, the hardness tester comprises:

[0025] A test cylinder, wherein both ends of the test cylinder are closed; a cylindrical spring cavity is arranged outside the upper end of the test cylinder in the axial center direction, and the internal space of the spring cavity is connected with the internal space of the test cylinder; a strip hole is opened on the circumferential side wall of the test cylinder in the height direction; and a scale is arranged on the long side edge of the strip hole;

[0026] A test needle, the test needle is cylindrical, and its diameter is consistent with the inner diameter of the spring cavity; the lower end of the test needle gradually shrinks to form a tip; the test needle is arranged along the axial center direction of the test cylinder, and the lower tip of the test needle is located outside the lower end of the test cylinder; the upper end of the test needle is located in the spring cavity;

[0027] A spring, wherein the spring is disposed between the inner top wall of the spring cavity and the top end of the test needle;

[0028] An indicator, a part of which is located in the test cylinder and connected to the test needle; another part of which passes through the strip hole and is located outside the test cylinder.

[0029] Further, the lower part of the test needle has an annular step;

[0030] The indicator comprises an annular portion, a connecting portion and an arcuate portion which are connected in sequence; the annular portion is sleeved on the test needle portion above the annular step; the inner diameter of the annular portion is between the outer diameter and the inner diameter of the annular step; the arcuate portion is located outside the circumferential wall of the test cylinder; the connecting portion passes through the strip hole, and its width is greater than the width of the strip hole.

[0031] Furthermore, a limiting protrusion is provided at the lower part of the test needle; when the limiting protrusion abuts against the inner bottom surface of the test cylinder, the spring is in an initial state of being neither compressed nor stretched.

[0032] The beneficial effects of the utility model are:

[0033] The ceramic clay blank hardness testing device of the utility model adds a uniform linear motion mechanism, a transition connection tube, etc., and drives the hardness tester to move through the uniform linear motion mechanism. Compared with the measurement by a handheld hardness tester, there is no influence of human factors, and the test result is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 It is a front view of the ceramic clay hardness testing device in the embodiment.

[0036] Figure 2 It is a left view of the ceramic clay hardness testing device in the embodiment.

[0037] Figure 3 A three-dimensional schematic diagram of a ceramic clay hardness testing device in an embodiment Figure 1 .

[0038] Figure 4 A three-dimensional schematic diagram of a ceramic clay hardness testing device in an embodiment Figure 2 .

[0039] Figure 5 Schematic diagram of the exploded structure of the ceramic clay hardness testing device in the embodiment.

[0040] Figure 6 for Figure 1 AA section view.

[0041] Figure 7 for Figure 2 Middle BB section view. DETAILED DESCRIPTION

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0043] The disclosure below provides many different embodiments or examples to implement different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present invention.

[0044] The embodiments of the utility model are described in detail below with reference to the accompanying drawings.

[0045] A ceramic clay hardness testing device, the structure of which is as shown in the attached Figures 1 to 5 As shown in . The ceramic clay blank hardness testing device comprises a hardness tester 100. The hardness tester 100 is used as a specific tool for testing the hardness of the ceramic clay blank.

[0046] In order to overcome the problem in the prior art that when a handheld hardness tester 100 is used for measurement, the speed at which the hardness tester 100 is inserted into the clay blank is inconsistent due to human factors, resulting in large fluctuations in the hardness test results of the clay blank, which leads to instability in the ceramic production process, the ceramic clay blank hardness testing device in this embodiment also includes a bracket 200, a uniform linear motion mechanism 300, a transition connection tube 400 and a baffle 500. Among them, the uniform linear motion mechanism 300 is arranged along the height direction of the bracket 200, and its upper part is connected to the upper end of the bracket 200. The lower part of the uniform linear motion mechanism 300 is a moving end, and the moving end can move back and forth at a uniform speed along the height direction of the bracket 200. One end of the transition connection tube 400 is detachably connected to the moving end of the uniform linear motion mechanism 300, and the other end is detachably connected to the upper end of the vertically arranged hardness tester 100. Thus, on the one hand, the transition connection tube 400, as a transition connection structure between the hardness tester 100 and the uniform linear motion mechanism 300, can improve the convenience of connecting the hardness tester 100 and the uniform linear motion mechanism 300, without having to consider the appearance structure of the hardness tester 100 and the uniform linear motion mechanism 300. On the other hand, the transition connection tube 400 itself also has a certain length, which is equivalent to increasing the overall height of the connection between the uniform linear motion mechanism 300 and the hardness tester 100, expanding its application scenario. The baffle 500 is located directly below the hardness tester 100 and connected to the lower end of the bracket 200, and the plate surface of the baffle 500 is perpendicular to the moving direction of the moving end of the uniform linear motion mechanism 300, which is the bearing area of ​​the ceramic clay blank to be tested. Along the height direction of the bracket 200, a circular working window hole 510 is opened in the projection area of ​​the hardness tester 100 on the baffle 500. When the hardness tester 100 moves synchronously with the moving end of the uniform linear motion mechanism 300, the hardness of the ceramic clay blank is tested. At the same time, when the lower end of the hardness tester 100 completely penetrates the ceramic clay blank, the lower end of the hardness tester 100 can pass through the working window hole 510 to prevent collision damage.

[0047] When the ceramic clay blank hardness testing device of this embodiment is used, the ceramic clay blank to be tested is laid flat on the baffle 500, and then the uniform linear motion mechanism 300 is started. The moving end of the uniform linear motion mechanism 300 uniformly drives the hardness tester 100 to move toward the ceramic clay blank to be tested for hardness testing.

[0048] The ceramic clay hardness testing device in this embodiment adds a uniform linear motion mechanism, a transition connection tube, etc., and drives the hardness tester to move through the uniform linear motion mechanism. Compared with measurement by a handheld hardness tester, there is no influence of human factors and the test results are more accurate.

[0049] In this embodiment, the uniform linear motion mechanism may be an electric push rod, a hydraulic cylinder, a cylinder, a linear module, etc. Preferably, the uniform linear motion mechanism in this embodiment is an electric push rod.

[0050] The electric push rod in this embodiment includes a screw motor 310, a screw 320, a slider 330, a protective shell 340, a protective sleeve 350 and a controller, as shown in the attached Figures 5 and 6 As shown in . Among them, the protective shell 340 (the top of the protective shell 340 is not shown in the figure) is connected to the upper end of the bracket 200. The screw motor 310 is arranged below the protective shell 340 along the height direction of the bracket 200. The output shaft of the screw motor 310 is located in the protective shell 340 and is provided with a driving gear 311. The controller (not shown in the figure) is electrically connected to the screw motor 310 to control the start and stop and forward and reverse rotation of the screw motor 320. The protective sleeve 350 is arranged below the protective shell 340 along the height direction of the bracket 200, greater than and parallel to the screw motor 310. The upper end of the protective sleeve 350 is connected to the protective shell 340. The screw 320 is located in the protective sleeve 350, and the axial centers of the two coincide. The upper end of the screw 320 is located in the protective shell 340, and a bearing is provided at the connection between the screw 320 and the protective shell 340. A first driven gear 321 is provided at the upper end of the screw 320. The lower end of the lead screw 320 extends to the vicinity of the lower end of the protective sleeve 350, and a circular support member 322 is provided at the lower end of the lead screw 320. A second driven gear 341 is also provided in the protective shell 340. The diameter of the first driven gear 321 is the largest, the diameter of the driving gear 311 is the smallest, and the diameter of the second driven gear 341 is between the first driven gear 320 and the driving gear 311. At the same time, the second driven gear 341 is meshed with the driving gear 311, and the first driven gear 321 is meshed with the second driven gear 341. Thus, the lead screw motor 310 can stably drive the lead screw 320 to rotate through the driving gear 311, the second driven gear 341 and the first driven gear 321. At the same time, the diameter change of the driving gear 311, the second driven gear 341 and the first driven gear 321 also controls the rotation speed of the lead screw 320 to be in a relatively small state, that is, it can achieve a lower moving speed to meet the hardness test requirements of the ceramic mud blank. The slider 330 is sleeved on the lead screw 320, and the outer wall of the slider 330 cooperates with the inner wall of the protective sleeve 350 to achieve axial linear movement of the slider 330 along the inner wall of the protective sleeve 350, without synchronously rotating with the lead screw 320. For example, a slide groove 351 can be set on the inner wall of the protective sleeve 350 along the axial direction, and a guide protrusion 331 can be set on the outer wall of the slider 330. The guide protrusion 331 is located in the slide groove 351, as shown in the attached figure. Figure 7As shown in . A piston cylinder 332 is provided on the lower surface of the slider 330. The piston cylinder 332 is located on the outer side of the lead screw 320, and the axial centers of the two coincide. The inner diameter of the piston cylinder 332 is consistent with the circular support member 322, and the two are in sliding contact to improve the stability of the piston cylinder 332 when it moves. At the same time, the circular support member 322 can also play a role in limiting the movement of the slider 330 on the lead screw 320. When the lead screw 320 rotates to drive the slider 330 to move linearly downward, the free end of the piston cylinder 332 gradually moves away from the lower end of the protective sleeve 350.

[0051] In this embodiment, the inner diameter of the upper end of the transition connection cylinder 400 is consistent with the outer diameter of the free end of the piston cylinder 332. The free end of the piston cylinder 332 is inserted into the inner side of the upper end of the transition connection cylinder 400, and a pin 360 is provided through it, so that the transition connection cylinder 400 is detachably connected to the moving end of the uniform linear motion mechanism 300. At the same time, matching internal and external threads are provided between the inner wall of the lower end of the transition connection cylinder 400 and the outer wall of the upper end of the hardness tester 100, thereby realizing the detachable connection between the transition connection cylinder 400 and the upper end of the vertically arranged hardness tester 100.

[0052] In this embodiment, the hardness tester 100 includes a test tube 110, a test needle 120, a spring 130 and an indicator 140. Figure 5As shown in . The upper and lower ends of the test cylinder 110 are closed, and an external thread that matches the internal thread of the lower inner wall of the transition connection cylinder 400 is provided on the outer wall of the upper end. A cylindrical spring cavity 111 is provided outside the upper end of the test cylinder 110 along the axial center direction, and the internal space of the spring cavity 111 is connected to the internal space of the test cylinder 110. The height of the spring cavity 111 is less than the height of the transition connection cylinder 400. A strip hole 112 is provided on the circumferential side wall of the test cylinder 110 along the height direction. A scale is provided at the edge of one long side of the strip hole 112. The diameter of the cylindrical test needle 120 is consistent with the inner diameter of the spring cavity 111, and its lower end gradually shrinks to form a tip. The test needle 120 is arranged along the axial center direction of the test cylinder 110, and its lower tip is located outside the lower end of the test cylinder 110, and its upper end is located in the spring cavity 111. The spring 130 is located between the inner top wall of the spring cavity 111 and the top of the test needle 120. One end of the spring 130 is connected to the inner top wall of the spring cavity 111, and the other end is connected to the top of the test needle 120. A part of the indicator 140 is located in the test tube 110 and connected to the test needle 120, and the other part passes through the bar hole 112 and is located outside the test tube 110. When the indicator 140 moves with the test needle 120, the hardness of the ceramic clay blank is characterized by identifying the scale value corresponding to the indicator 140. In this embodiment, a spring is used as a pressure source for pressurizing the ceramic clay blank, which can ensure that the pressure applied to the ceramic clay blank is consistent each time. The impedance of the clay material under the same pressure is proportional to the hardness of the ceramic clay blank, and the depth of the test needle pushed into the ceramic clay blank by the spring is used to characterize the hardness of the ceramic clay blank.

[0053] In this embodiment, in the hardness tester 100 in a vertical state, the spring 130 is in a stretched state due to the weight of the test needle 120. In order to extend the service life of the spring 130, limit protrusions 121 are provided on two opposite sides of the lower part of the test needle 120. When the limit protrusions 121 are against the inner bottom surface of the test cylinder 110, the spring 130 is in an initial state of not being compressed or stretched.

[0054] In this embodiment, in order to facilitate observation of the scale corresponding to the indicator 140 during the hardness test of the ceramic clay blank, the diameter of the middle section 122 of the test needle 120 is shrunk, and the length of the middle section 122 is greater than the length of the strip hole 112. The lower end of the middle section 122 is an annular step 123. When the indicator 140 is located at the annular step 123, the indicator 140 should show the initial origin of the scale, that is, the "0" point. The indicator 140 includes an annular portion 141, a connecting portion 142 and an arc portion 143. The annular portion 141 is sleeved on the middle section 122 of the test needle 120, and the axial centers of the two are roughly coincident. The inner diameter of the annular portion 141 is between the outer diameter and the inner diameter of the annular step 123. The arc portion 143 is located outside the circumferential wall of the test cylinder 110, and its curvature center roughly coincides with the axial center of the test cylinder 110. The connecting portion 142 passes through the strip hole 112, and the two ends are connected to the annular portion 141 and the arc portion 143 respectively. At the same time, the width of the connecting portion 142 is slightly larger than the width of the strip hole 112, for example, 0.1~0.5mm larger. As a result, there is a certain friction between the connecting portion 142 and the side wall of the strip hole 112. During the test, with the interaction between the test needle 120 and the ceramic clay blank, the test needle 120 will move upward, and the indicator 140 is restricted by the annular step 123 to move synchronously. After the test is completed, the test needle 120 returns to the initial position under the action of the spring 130, and the diameter difference of the annular portion 141 of the indicator 140 makes the indicator 140 not move synchronously with the test needle 120, and the friction resistance between the indicator 140 and the inside of the strip hole 112 makes the position of the indicator 140 remain unchanged. As a result, the tester does not need to pay attention to the scale value shown by the indicator 140 at all times.

[0055] In this embodiment, the test needle 120 may also directly protrude in an annular shape at the lower end of the middle section 122 to form an annular step 123, so that the indicator 140 can be driven by the test needle 120 when it moves upward, and the position of the indicator 140 remains unchanged when the test needle 120 returns to the initial position.

[0056] In this embodiment, in order to further improve the moving and positioning effect of the indicator 140, the test tube 140 can be made of iron material, and the arc portion 143 can be made of magnetic material, and the relative positions of the two can be stabilized by magnetic attraction.

Claims

1. A ceramic clay hardness testing device, characterized in that: include: A bracket, wherein the bracket is arranged vertically; A hardness tester, the hardness tester is arranged along the height direction of the bracket; A uniform linear motion mechanism, the uniform linear motion mechanism is arranged along the height direction of the bracket, and the upper part thereof is connected to the upper end of the bracket; the lower part of the uniform linear motion mechanism is a moving end; A transition connection tube, the upper end of which is detachably connected to the moving end of the uniform linear motion mechanism; the lower end of which is detachably connected to the upper end of the hardness tester; The baffle is located directly below the hardness tester, and its plate surface is perpendicular to the height direction of the bracket and connected to the lower end of the bracket.

2. The ceramic clay hardness testing device according to claim 1, characterized in that: Along the height direction of the bracket, a working window hole is opened in the projection area of ​​the hardness tester on the baffle.

3. The ceramic clay hardness testing device according to claim 1, characterized in that: The uniform linear motion mechanism is an electric push rod, a hydraulic cylinder, a pneumatic cylinder or a linear module.

4. The ceramic clay hardness testing device according to claim 3, characterized in that: The uniform linear motion mechanism is an electric push rod, which includes: A protective shell, the protective shell being arranged at the upper end of the bracket; a second driven gear being arranged in the protective shell; A lead screw motor, wherein the lead screw motor is arranged below the protective shell, and an output shaft thereof is located inside the protective shell; a driving gear is arranged on the output shaft of the lead screw motor; A controller, the controller being electrically connected to the lead screw motor; A protective sleeve, the protective sleeve is arranged below the protective shell and parallel to the lead screw motor; A lead screw, the lead screw is located in the protective sleeve, and the axial centers of the two coincide with each other; the upper end of the lead screw is located in the protective housing and is provided with a first driven gear; the first driven gear, the second driven gear and the driving gear are meshed in sequence; A slider is fitted on the lead screw, and its outer wall cooperates with the inner wall of the protective sleeve to enable the slider to move axially in a straight line along the inner wall of the protective sleeve without rotating synchronously with the lead screw; a piston cylinder is provided on the lower surface of the slider; the piston cylinder is located on the outer side of the lead screw, and the axial centers of the two coincide.

5. The ceramic clay hardness testing device according to claim 4, characterized in that: The lower end of the lead screw extends to the vicinity of the lower end of the protective sleeve and is provided with a circular support member; the diameter of the circular support member is consistent with the inner diameter of the piston cylinder, and the two are in sliding contact.

6. The ceramic clay hardness testing device according to claim 4, characterized in that: The diameters of the first driven gear, the second driven gear and the driving gear decrease in sequence.

7. The ceramic clay hardness testing device according to claim 4, characterized in that: The inner diameter of the lower end of the transition connection cylinder is consistent with the outer diameter of the piston cylinder, and the two are connected by a pin.

8. The ceramic clay hardness testing device according to any one of claims 1 to 7, characterized in that: The hardness tester comprises: A test cylinder, wherein both ends of the test cylinder are closed; a cylindrical spring cavity is arranged outside the upper end of the test cylinder in the axial center direction, and the internal space of the spring cavity is connected with the internal space of the test cylinder; a strip hole is opened on the circumferential side wall of the test cylinder in the height direction; and a scale is arranged on the long side edge of the strip hole; A test needle, the test needle is cylindrical, and its diameter is consistent with the inner diameter of the spring cavity; the lower end of the test needle gradually shrinks to form a tip; the test needle is arranged along the axial center direction of the test cylinder, and the lower tip of the test needle is located outside the lower end of the test cylinder; the upper end of the test needle is located in the spring cavity; A spring, wherein the spring is disposed between the inner top wall of the spring cavity and the top end of the test needle; An indicator, a part of which is located in the test cylinder and connected to the test needle; another part of which passes through the strip hole and is located outside the test cylinder.

9. The ceramic clay hardness testing device according to claim 8, characterized in that: The lower part of the test needle is provided with an annular step; The indicator comprises an annular portion, a connecting portion and an arcuate portion which are connected in sequence; the annular portion is sleeved on the test needle portion above the annular step; the inner diameter of the annular portion is between the outer diameter and the inner diameter of the annular step; the arcuate portion is located outside the circumferential wall of the test cylinder; the connecting portion passes through the strip hole, and its width is greater than the width of the strip hole.

10. The ceramic clay hardness testing device according to claim 8, characterized in that: A limiting protrusion is arranged at the lower part of the test needle; when the limiting protrusion abuts against the inner bottom surface of the test cylinder, the spring is in an initial state of being neither compressed nor stretched.

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