CN217005754U - Thickness measuring device - Google Patents

Abstract

The application discloses a thickness measuring device, which comprises a first sensor, a second sensor and a mounting frame, wherein the first sensor and the second sensor are arranged at intervals, the mounting frame is used for mounting the two sensors, and the mounting frame is connected with a driving mechanism through a hinge mechanism and a floating mechanism and can move under the driving of the driving mechanism; the hinge mechanism comprises a first connecting plate connected with the driving mechanism and a second connecting plate connected with the mounting frame; the floating mechanism comprises a first connecting piece connected with the driving mechanism and a second connecting piece connected with the mounting frame; the two connecting plates are hinged, and the two connecting pieces are abutted against each other, so that the mounting frame is stably arranged on the driving mechanism; when the mounting bracket upwards or during the downward sloping to waiting to detect the in-process of position motion, the second connecting plate can be rotatory around articulated position, and then drives the whole swing of mounting bracket, and on the mounting bracket, two sensors synchronous displacement thereupon, because two sensors keep the sense terminal just unchangeable just to and interval between the two, can reduce because the detection error that equipment tolerance brought.

Description

Thickness measuring device

Technical Field

The application relates to the technical field of thickness measurement, in particular to a thickness measuring device.

Background

The pole piece for constructing the battery cell is composed of a foil and electrode slurry coated on the foil. The thickness of the coated pole piece may not be uniform due to the influence of the accuracy and stability of the coating device. In order to ensure the quality of the battery core, the thickness of the pole piece needs to be measured.

During thickness measurement, the detection ends of the two sensors are required to be kept opposite to each other, and the detection signals are ensured to be vertical to the surface of the pole piece. Meanwhile, in the thickness measurement process, the pole piece continuously moves forwards, and the sensor needs to reciprocate along the width direction of the pole piece so as to ensure that the whole thickness of the pole piece is measured.

Due to the tolerances of the manufacturing of the device, the path of movement of the sensor is not always parallel to the surface of the piece to be detected. When the motion path of the sensor is inclined, the detection ends of the two sensors can be displaced relatively, and the detection accuracy is finally influenced.

Disclosure of Invention

The application provides a thickness measuring device to solve the detection problem that equipment tolerance brought among the prior art.

In order to solve the technical problem, the application adopts a technical scheme that: the utility model provides a thickness measuring device, including first sensor and the second sensor of interval setting to and the mounting bracket that is used for installing first sensor and second sensor, still include: the driving mechanism is used for driving the mounting rack to move; the hinge mechanism comprises a first connecting plate connected with the driving mechanism and a second connecting plate connected with the mounting frame, and the first connecting plate is hinged with the second connecting plate; the floating mechanism comprises a first connecting piece connected with the driving mechanism and a second connecting piece connected with the mounting frame, and the first connecting piece is abutted against the second connecting piece; the hinge mechanism and the floating mechanism are respectively arranged on two sides of the gravity center position of the mounting frame; the mounting bracket moves along the horizontal direction, when the vertical direction moves, the second connecting plate rotates around the hinged position, drives the first sensor and the second sensor to synchronously rotate, and the distance between the first sensor and the second sensor is kept constant.

Further, the mounting bracket includes: the first sensor is arranged on the first bracket; the second sensor is arranged on the second bracket; a third bracket connecting the first bracket and the second bracket; the first bracket and the second bracket are arranged at intervals; when the thickness is measured, the piece to be detected penetrates through the first support, the second support and the space between the first sensor and the second sensor.

Further, the hinge mechanism further includes: the first support and the second support are arranged on the first connecting plate at intervals; the supporting shaft is connected with the first support and the second support; the supporting plate is connected with the supporting shaft and the second connecting plate; one end of the supporting shaft is rotatably arranged in the first support, the other end of the supporting shaft is rotatably arranged in the second support, and the supporting plate is fixedly connected with the supporting shaft; or one end of the supporting shaft is fixedly arranged in the first support, the other end of the supporting shaft is fixedly arranged in the second support, and the supporting plate is rotatably arranged on the supporting shaft.

Further, the surface of the first connecting piece, which is used for contacting the second connecting piece, is an inclined surface, and/or the surface of the second connecting piece, which is used for contacting the first connecting piece, is an inclined surface; the ramp slopes downwardly toward the hinge mechanism.

Furthermore, when the surface of the first connecting piece, which is used for contacting with the second connecting piece, is a slope, the surface of the second connecting piece, which is used for contacting with the first connecting piece, is an arc surface; or when the surface of the second connecting piece, which is used for contacting the first connecting piece, is a bevel surface, the surface of the first connecting piece, which is used for contacting the second connecting piece, is a circular arc surface.

Further, the floating mechanism further comprises a sliding guide member extending toward the hinge mechanism; the first connecting piece and/or the second connecting piece are/is arranged on the sliding guide piece in a sliding mode; the levelness of the mounting rack can be adjusted by moving the first connecting piece or the second connecting piece along the sliding guide piece.

Further, the surface of the first connecting plate is sunken to form a sliding groove, and the first connecting piece is arranged in the sliding groove; and/or the surface of the second connecting plate is sunken to form a sliding groove, and the second connecting piece is arranged in the sliding groove; the sliding chute is used as a sliding guide, and two sides of the sliding chute in the width direction abut against the first connecting plate or the second connecting piece and are used for guiding the first connecting plate or the second connecting piece to move along the extending direction of the sliding chute; the sliding groove and the first connecting piece and/or the sliding groove and the second connecting piece are respectively provided with a waist-shaped hole and a threaded hole; the waist-shaped hole extends towards the hinge mechanism, the threaded hole is exposed in the waist-shaped hole, and the screw penetrates through the waist-shaped hole and is in threaded connection with the threaded hole.

Furthermore, two sides of the extending direction of the sliding guide part are respectively provided with a first limiting block, the first connecting piece or the second connecting piece is arranged between the two first limiting blocks, and the two first limiting blocks are used for limiting the moving range of the first connecting piece or the second connecting piece.

Further, a second limiting block is arranged on one side, away from the floating mechanism, of the hinge mechanism; the second connecting plate is rotatory around articulated position, when making the second connecting piece keep away from first connecting piece, the mounting bracket is rotatory towards the second stopper, and the rotation angle of mounting bracket can be restricted to the second stopper.

Further, the drive mechanism includes: the surface of the base is sunken to form a mounting groove; the driving assembly is arranged in the mounting groove and is connected with the mounting frame through the hinge mechanism and the floating mechanism; the guide assemblies are arranged on two sides of the mounting groove; the hinge mechanism and the floating mechanism are arranged on the guide assembly in a sliding mode, and the driving assembly drives the hinge mechanism and the floating mechanism and drives the mounting frame to move along the guide assembly.

The application provides a thickness measuring device which comprises a first sensor, a second sensor and a mounting frame, wherein the first sensor and the second sensor are arranged at intervals, the mounting frame is used for mounting the two sensors, and the mounting frame is connected with a driving mechanism through a hinge mechanism and a floating mechanism and can move under the driving of the driving mechanism; the hinge mechanism comprises a first connecting plate connected with the driving mechanism and a second connecting plate connected with the mounting frame; the floating mechanism comprises a first connecting piece connected with the driving mechanism and a second connecting piece connected with the mounting frame; the two connecting plates are hinged, and the two connecting pieces are mutually abutted, so that the mounting frame is stably arranged on the driving mechanism; when the mounting bracket upwards or during the downward sloping to waiting to detect the in-process of position motion, the second connecting plate can be rotatory around articulated position, and then drives the whole swing of mounting bracket, and on the mounting bracket, two sensors synchronous displacement thereupon, because two sensors keep the sense terminal just right, and the interval between the two unchangeable, can reduce because the detection error that equipment tolerance brought.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:

FIG. 1 is a schematic diagram of a structure for measuring thickness by a laser sensor;

FIG. 2a is a schematic view of a prior art construction of a thickness measuring device;

FIG. 2b is a schematic diagram of the thickness measuring device shown in FIG. 2a with an inclined moving path;

FIG. 3 is a schematic structural diagram of a thickness measuring device provided in the present application;

FIG. 4 is a top schematic view of the structures on the first linkage plate and the drive mechanism shown in FIG. 3;

FIG. 5 is a schematic structural view of another thickness measuring device provided in the present application;

FIG. 6 is a schematic structural diagram of another thickness measuring device provided in the present application;

FIG. 7 is a schematic diagram of the reciprocating path of the sensor during pole piece thickness measurement.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The application discloses a thickness measuring device, which comprises a first sensor 1 and a second sensor 2 which are arranged at intervals, and a mounting frame 10 for mounting the first sensor 1 and the second sensor 2,

in one embodiment, referring to fig. 1, the first sensor 1 and the second sensor 2 are disposed at an interval in the vertical direction, the first sensor 1 is disposed at the top with its detecting end facing downward, and the second sensor 2 is disposed at the bottom with its detecting end facing upward. The piece to be detected passes through between the first sensor 1 and the second sensor 2; the detection signals output by the first sensor 1 and the second sensor 2 act on the piece to be detected, so that the thickness of the piece to be detected is tested.

Wherein, the first sensor 1 and the second sensor 2 can adopt sensors for measuring thickness by radioactive ray decay; a sensor for measuring thickness by using ultrasonic frequency change can also be adopted; sensors that measure thickness using eddy current principles may also be used.

In one embodiment, one of the first sensor 1 and the second sensor 2 is a signal emitting sensor, and the other is a signal receiving sensor. The detection signal sent by the signal transmitting sensor penetrates through the piece to be detected and is received by the signal receiving sensor, and the thickness of the piece to be detected is obtained according to the intensity change of the detection signal.

In another embodiment, the first sensor 1 and the second sensor 2 may be laser sensors, and in this case, the two laser sensors are capable of emitting a laser beam. Referring to fig. 1, a first sensor 1 and a second sensor 2 are spaced by a distance C, the first sensor 1 is spaced by a distance a from the upper surface of a piece to be detected, and the second sensor 2 is spaced by a distance B from the lower surface of the piece to be detected; at this time, the thickness of the piece to be detected is C- (a + B).

To sum up, the detection ends of the first sensor 1 and the second sensor 2 are aligned, so that the detection signals of the two sensors can be ensured to act on the same position of the piece to be detected, and the thickness measurement of the detection position can be accurately realized while the accurate transmission of the detection signals is ensured. In addition, the detection signals of the first sensor 1 and the second sensor 2 are perpendicular to the surface of the piece to be detected, so that the detection data can be conveniently calculated, and the detection result can be accurately obtained.

Further, when a specific position of the piece to be detected is measured, the first sensor 1 and the second sensor 2 may be fixed. When the thickness of a plurality of positions of the piece to be detected is measured, the first sensor 1 and the second sensor 2 can move.

For example, when the object to be detected is a pole piece, the pole piece is continuously advanced along the length direction thereof and has a certain width. In order to comprehensively detect the thickness of the pole piece, the first sensor 1 and the second sensor 2 synchronously reciprocate along the width direction of the pole piece in the thickness measuring process. Reference may be made to fig. 7, in which the pole pieces are substantially rectangular with an infinite length; when the thickness is measured, the pole piece is walked from left to right at a constant speed, and the sensor moves back and forth at a constant speed in the up-down direction; the motion track of the detection signal of the sensor on the pole piece is in a regular broken line shape shown by a dotted line in the figure. Therefore, the thickness of the pole piece with a certain length can be well measured through the moving sensor.

For example, referring to fig. 2a and 2b, in fig. 2a, the ground extends horizontally in the left-right direction, and the two sensors always ensure a preset relative position to move horizontally under the driving of the driving mechanism 20. In fig. 2b, when the ground is inclined from left to right and the driving mechanism 20 drives the mounting frame 10 to move from right to left, the portion of the mounting frame 10 disposed at the front in the moving direction will gradually lift up. On the mounting frame 10, the second sensor 2 arranged below is greatly influenced by the movement of the mounting frame 10; when the mounting rack 10 is lifted, the second sensor 2 is lifted along with the mounting rack; however, due to the change in force transmission, the first sensor 1 arranged thereon is less affected by the movement of the mounting block 10, and when the mounting block 10 is lifted, the first sensor 1 may not be lifted, or the first sensor 1 may be lifted only to a slight extent. In this case, the detection ends of the two sensors are deviated from each other, and the detection signals of the two sensors are staggered from each other, which greatly affects the final detection data.

In one embodiment, the mounting frame 10 is a C-shaped frame, comprising: the first bracket 11, the first sensor 1 is set up on the first bracket 11; a second support 12, the second sensor 2 being disposed on the second support 12; a third bracket 13 connecting the first bracket 11 and the second bracket 12; wherein, the first bracket 11 and the second bracket 12 are arranged at intervals; when measuring the thickness, the piece to be detected passes through the first bracket 11, the second bracket 12 and the space between the first sensor 1 and the second sensor 2.

Referring to fig. 2a and 2b, the first bracket 11 is disposed on the upper side, away from the driving mechanism 20; the second bracket 12 is disposed below and connected to the driving mechanism 20. In fig. 2b, when the driving mechanism 20 drives the mounting frame 10 to move left or right, resulting in the front end of the mounting frame 10 being lifted or lowered along the moving direction, the second support 12 is easily lifted or lowered along with the driving mechanism. Since there is a gap between the first bracket 11 and the second bracket 12, the first bracket 11 is less affected by the vertical movement of the driving mechanism 20. For example, when the mounting frame 10 moves to the left, the second bracket 12 is affected by the inclination of the ground, causing the front end provided with the second sensor 2 to gradually lift up; due to the gap, the movement of the second bracket 12 in the vertical direction, which is hindered by the gap, cannot be immediately transmitted to the first bracket 11, so that the front end of the first bracket 11, which is provided with the first sensor 1, is relatively fixed in the vertical direction. Finally, the vertical position of the detection end of the first sensor 1 is unchanged, but the second sensor 2 is lifted along with the second support 12, and the detection end of the second sensor 2 is inclined and deviates from the detection end of the first sensor 1, so that two detection signals cannot accurately act on the same position to be detected, and the transmission direction of the detection signals deviates, thereby affecting the thickness measurement result.

It should be noted that, in actual equipment, the inclination of the movement path of the mounting frame 10 is difficult to be found by naked eyes (the inclination of the movement path of the mounting frame 10 means that the movement direction of the mounting frame 10 is not a horizontal direction). If there is a large inclination, the movement path of the mounting frame 10 can be adjusted to be substantially horizontal by manual adjustment. The degree of tilt in the illustrated embodiment is apparent and is merely for ease of reading and understanding.

Although the inclination degree of the movement path of the mounting frame 10 is very small, the error of the finally obtained thickness result is large after the detection ends of the first sensor 1 and the second sensor 2 are displaced and the detection signals are mutually inclined.

When the movement path of the mounting frame 10 inclines, if the first sensor 1 and the second sensor 2 synchronously lift or descend along with the mounting frame 10, the first sensor 1 and the second sensor 2 keep preset relative positions, namely the detection ends of the first sensor 1 and the second sensor 2 are opposite to each other and are at a preset interval, and meanwhile, the detection signals of the first sensor 1 and the second sensor 2 are collinear, because the inclination degree of the movement path of the mounting frame 10 is very small, the lifting or descending degree of the mounting frame 10 is also very small, and the finally obtained thickness result error is small.

Therefore, the thickness measuring device disclosed in the present application further includes: the hinge mechanism 30, the hinge mechanism 30 includes the first connecting plate 31 connected with drive mechanism 20, and the second connecting plate 32 connected with mounting bracket 10, the first connecting plate 31 is hinged with the second connecting plate 32; the floating mechanism 40, the floating mechanism 40 includes the first link 41 connected with drive mechanism 20, and the second link 42 connected with mounting bracket 10, the first link 41 is supported against the second link 42; wherein, the hinge mechanism 30 and the floating mechanism 40 are respectively arranged at two sides of the gravity center position of the mounting frame 10; in the process that the mounting frame 10 moves along the horizontal direction and when the mounting frame moves in the vertical direction, the second connecting plate 32 rotates around the hinge position to drive the first sensor 1 and the second sensor 2 to synchronously rotate, and the distance between the first sensor 1 and the second sensor 2 is kept constant.

The first connecting plate 31 is hinged to the second connecting plate 32, when the movement path of the mounting frame 10 is inclined, the first connecting plate 31 connected to the driving mechanism 20 is inclined in compliance with the movement path, the center of gravity of the second connecting plate 32 and the mounting frame 10 is offset, and the second connecting plate 32 rotates around the hinge position to drive the whole mounting frame 10 and the two sensors on the mounting frame 10 to synchronously rotate until the mounting frame 10, the driving mechanism 20, the hinge mechanism 30 and the floating mechanism 40 are in a balanced state again. At this time, the two sensors on the mounting frame 10 maintain the preset relative positions; for example, in the preset situation shown in fig. 1, when the two sensors are located at the preset relative positions, the detection ends of the two sensors face each other, and the detection signals are collinear and perpendicular to the surface of the object to be detected; therefore, the phenomenon that the motion of the two sensors in the vertical direction is asynchronous due to the delay of external force transmission is avoided.

The first connecting plate 31 and the second connecting plate 32 may be hinged by a hinge, a pivot, or the like to rotate the connecting members.

In one embodiment, the hinge mechanism 30 further comprises: a first support 33 and a second support 34 spaced apart from each other on the first connection plate 31; a support shaft 35 connecting the first support 33 and the second support 34; and a support plate 36 connecting the support shaft 35 and the second connection plate 32. Wherein, one end of the supporting shaft 35 is rotatably arranged in the first support 33, the other end is rotatably arranged in the second support 34, and the supporting plate 36 is fixedly connected with the supporting shaft 35; when the center of gravity of the second connecting plate 32 is shifted, the supporting plate 36 and the supporting shaft 35 are driven to rotate around the central axis of the supporting shaft 35. Alternatively, one end of the support shaft 35 is fixedly disposed in the first holder 33, the other end is fixedly disposed in the second holder 34, and the support plate 36 is rotatably disposed on the support shaft 35; when the center of gravity of the second connecting plate 32 is shifted, the supporting plate 36 is driven to rotate around the supporting shaft 35.

The projection of the longitudinal direction of the support shaft 35 in the horizontal plane is perpendicular to the moving direction of the mounting bracket 10. For example, in the embodiment shown in fig. 3 and 4, the driving mechanism 20 drives the mounting frame 10 to reciprocate in the left-right direction, and the support shaft 35 is provided in the front-rear direction. The support plate 36 is provided on the support shaft 35 so as to be relatively fixed in the front-rear direction, but is rotatable about the center axis of the support shaft 35 in a vertical plane formed by the up-down direction and the left-right direction.

Further, in the embodiment shown in fig. 3 and 4, both ends of the support shaft 35 are rotatably provided in the first holder 33 and the second holder 34, respectively, through bearings. When the first connecting plate 31 moves upwards gradually from right to left, the center of gravity of the mounting rack 10 shifts to the right, the second connecting plate 32 drives the supporting shaft 35 to rotate clockwise, and the first sensor 1 and the second sensor 2 are lifted synchronously.

The floating mechanism 40 is used to balance the arrangement of the mounting frame 10 in cooperation with the hinge mechanism 30.

For example, in fig. 3, the surface of the first connecting plate 31 connected to the driving mechanism 20 and the surface of the second connecting plate 32 connected to the mounting frame 10 are horizontally disposed, and the detection signals of the first sensor 1 and the second sensor 2 are perpendicular to the surface of the object to be detected. At this time, one side of the lower surface of the mounting frame 10 is connected with the hinge mechanism 30, and the other side is connected with the floating mechanism 40; the first connecting member 41 and the second connecting member 42 are used for supporting one side of the mounting frame 10 away from the hinge mechanism 30, so that the mounting frame 10 is in a horizontal state and can move in the left-right direction stably while keeping the mounting frame 10 in the horizontal state.

When the mounting bracket 10 moves in the inclined direction, the second connecting plate 32 rotates around the position where it is hinged to the first connecting plate 31, and at this time, the side of the mounting bracket 10 connected to the floating mechanism 40 is lifted or lowered, so as to drive the second connecting member 42 and the first connecting member 41 to move relatively. When the side of the mounting frame 10 connected with the floating mechanism 40 is lifted, the second connecting piece 42 is far away from the first connecting piece 41; when the side of the mounting frame 10 connected to the floating mechanism 40 is lowered, the second connecting member 42 continuously abuts against the first connecting member 41.

When the mounting bracket 10 rotates around the hinge position of the hinge mechanism 30, in order to facilitate the relative movement between the first connecting member 41 and the second connecting member 42, the surface of the first connecting member 41 for contacting the second connecting member 42 is an inclined surface, and/or the surface of the second connecting member 42 for contacting the first connecting member 41 is an inclined surface; the ramp slopes downward toward the hinge mechanism 30.

For example, in the embodiment shown in fig. 3, the upper surface of the first connecting member 41 is a slope that slopes downward from left to right; the lower surface of the second link 42 is slidably disposed on the inclined surface. When the second connecting plate 32 is rotated clockwise about its position hinged to the first connecting plate 31, the left end of the mounting bracket 10 is lifted up and the second connecting member 42 moves upward and leftward while following an arc path, away from the first connecting member 41. As can be seen from the above, the lifting range of the mounting rack 10 is small, and since the upper surface of the first connecting member 41 is inclined from right to left, when the second connecting member 42 moves upward and leftward, it can continue to contact with the first connecting member 41, thereby ensuring that the mounting rack 10 is in a balanced state. Similarly, when the second connecting plate 32 rotates counterclockwise around the position where it is hinged to the first connecting plate 31, the second connecting member 42 moves downward and rightward simultaneously along the circular arc path; because the upper surface of the first connecting piece 41 inclines downwards from left to right, when the second connecting piece 42 moves downwards and rightwards, the first connecting piece 41 does not obstruct the movement of the second connecting piece 42 and can continue to contact with the second connecting piece 42, thereby ensuring that the mounting rack 10 is in a balanced state.

For another example, in the embodiment shown in fig. 5, the lower surface of the second connection member 42 is a slope that slopes downward from left to right; the upper surface of the first connecting member 41 is slidably disposed on the inclined surface. When the second connecting plate 32 rotates clockwise around the position where it is hinged to the first connecting plate 31, the second connecting member 42 moves upward and leftward along the arc, the right end of the lower surface of the second connecting member 42 is close to the upper surface of the first connecting member 41, and the height of the inclined surface is lower as the inclined surface is closer to the right, so that the inclined surface can continuously abut against the first connecting member 41. Similarly, when the second connecting plate 32 rotates counterclockwise around the position where it is hinged to the first connecting plate 31, the second connecting member 42 moves downward and rightward along the arc, the left end of the lower surface of the second connecting member 42 is close to the upper surface of the first connecting member 41, and the inclined surface is higher on the left side and can continue to abut against the first connecting member 41.

Also for example, in the embodiment shown in fig. 6, the upper surface of the first connecting member 41 is a slope that slopes downward from left to right; meanwhile, the lower surface of the second link 42 is also a slope, which also slopes downward from left to right. The two inclined planes are opposite and parallel to each other. In the initial state, the two inclined surfaces are attached to each other, so that the mounting frame 10, the hinge mechanism 30 and the floating mechanism 40 are in a balanced state. When the mounting bracket 10 moves along the inclined direction, the second connecting plate 32 rotates around the position where the second connecting plate is hinged with the first connecting plate 31, the lower surface of the second connecting piece 42 moves along the upper surface of the first connecting piece 41, and when the mounting bracket 10 rotates in a matching manner, the first connecting plate 31 and the second connecting piece 42 are guaranteed to have partial mutual abutment, so that the mounting bracket 10 is guaranteed to be always in a balanced state.

Further, the first connecting member 41 and/or the second connecting member 42 may be made of an elastic material (e.g., plastic, rubber), or an elastic member (e.g., a spring) may be disposed between the first connecting member 41 and the second connecting member 42. The elastic material or the elastic piece has the characteristics of deformation and restoration; when the first connecting plate 31 abuts against the second connecting piece 42, the elastic part is compressed, and the first connecting plate 31 abuts against the second connecting piece 42; when the first connecting plate 31 and the second connecting member 42 move relatively, the elastic part is stretched or continues to be compressed, thereby compensating for the distance of the relative movement of the first connecting plate 31 and the second connecting member 42.

In addition, when the first connecting member 41 and/or the second connecting member 42 are made of an elastic material or an elastic member is provided between the first connecting member 41 and the second connecting member 42, the first connecting member 41 and the second connecting member 42 can be fixedly connected because the elastic portion can be compressed as well as stretched. When the second connecting piece 42 is lifted along with the mounting rack 10 and is far away from the first connecting piece 41, the elastic part is stretched and deformed; when the second connecting member 42 descends along with the mounting bracket 10 and continuously abuts against the first connecting member 41, the elastic part is compressed and deformed, and the first connecting plate 31 and the second connecting member 42 can also be ensured to abut against each other and support the mounting bracket 10 in a balanced state.

Further, when the surface of the first connecting member 41 contacting the second connecting member 42 is a slope, the surface of the second connecting member 42 contacting the first connecting member 41 is a circular arc; alternatively, when the surface of the second connection member 42 contacting the first connection member 41 is a slope, the surface of the first connection member 41 contacting the second connection member 42 is a circular arc.

Referring to fig. 3 and 5, since the surface of the first connecting member 41 or the second connecting member 42 sliding on the inclined surface is an arc surface, the arc surface is curved toward the center of a circle in the direction of lifting or lowering the mounting bracket 10, so that the upper surface of the first connecting member 41 and the lower surface of the second connecting member 42 are in line contact or in contact with a very small area, and the second connecting member 42 is prevented from being blocked by the first connecting member 41 when rotating along with the mounting bracket 10, so that the first connecting member 41 and the second connecting member 42 can move relatively.

In order to conveniently adjust the abutting positions of the first connecting piece 41 and the second connecting piece 42, so that the mounting frame 10 is in a balanced state, the detection ends of the first sensor 1 and the second sensor 2 are opposite to each other, the detection signal is perpendicular to the surface of the piece to be detected, the floating mechanism 40 further comprises a sliding guide piece 43, the sliding guide piece 43 extends towards the hinge mechanism 30, the first connecting piece 41 and/or the second connecting piece 42 are/is arranged on the sliding guide piece 43 in a sliding mode, the first connecting piece or the second connecting piece is moved along the sliding guide piece 43, and the levelness of the mounting frame can be adjusted.

The sliding guide 43 may be a guide member such as a guide rod or a guide rail, or may be a sliding groove, the sliding groove and the first connecting member 41, and/or the sliding groove and the second connecting member 42 are respectively provided with a kidney-shaped hole 44 and a threaded hole 45; a kidney-shaped hole 44 extends toward the hinge mechanism 30, a screw hole 45 is exposed in the kidney-shaped hole 44, and a screw is threaded through the kidney-shaped hole 44 to the screw hole 45.

When the screw is loosened, the first link 41 or the second link 42 can be moved in the direction in which the kidney-shaped hole 44 is provided to approach or separate from the hinge mechanism 30. For example, in the embodiment shown in fig. 3 and 4, the first connecting member 41 is provided in the chute; the upper surface of the first connecting piece 41 is an inclined surface which inclines from left to right, and the lower surface of the second connecting piece 42 is arranged on the inclined surface in a sliding manner; moving the first link 41 to the right, the second link 42 is gradually raised; moving the first link 41 to the left, the second link 42 gradually descends; because the inclined plane has height variation, the first connecting piece 41 is moved along the left-right direction, and the contact position of the first connecting piece 41 and the second connecting plate 32 can be adjusted, so that the surface of the second connecting plate 32 connected with the mounting rack 10 is horizontal or in other required states, and the detection signal of the sensor is vertical to the surface of the piece to be detected.

After the adjustment is finished, the threaded hole 45 is exposed in the waist-shaped hole 44, on one hand, the first connecting piece 41 or the second connecting piece 42 can be ensured to move along the arrangement direction of the waist-shaped hole 44, and the deviation of the moving direction of the first connecting piece 41 or the second connecting piece 42 is avoided; on the other hand, after the adjustment is finished, the screw is locked, and the two connecting members (the first connecting member 41 or the second connecting member 42) can be quickly fixed.

It should be noted that, to adjust the contact positions of the two connecting members, the first connecting member 41 may move along the extending direction of the inclined surface, the second connecting member 42 may move along the extending direction of the inclined surface, or the first connecting member 41 and the second connecting member 42 may move separately, which can both achieve the adjustment requirement.

In one embodiment, the articulation mechanism 30 and the float mechanism 40 may be independently coupled to the drive mechanism 20. The first connecting plate 31 of the hinge mechanism 30 is connected to the working end of the driving mechanism 20, and the second connecting plate 32 is hinged to the first connecting plate 31 and connected to the mounting base 10. The first connecting member 41 of the floating mechanism 40 is connected to the working end of the driving mechanism 20, and the second connecting member 42 is slidably disposed on the first connecting member 41 and connected to the mounting base 10.

In this embodiment, the sliding groove may be a block structure with a surface recessed to accommodate the first connecting member 41 or the second connecting member 42. When the first connecting plate 31 is disposed in the chute, the chute is connected to the working end of the driving mechanism 20, the surface of the first connecting plate 31 connected to the driving mechanism 20 and the surface of the chute or the first connecting member 41 connected to the driving mechanism 20 are coplanar; when the second connecting plate 32 is disposed in the chute, the surface of the second connecting plate 32 connected to the mounting block 10 and the surface of the chute connected to the mounting block 10 are coplanar.

In another embodiment, the hinge mechanism 30 and the floating mechanism 40 can be connected together, so that the driving mechanism 20 drives the two to move the mounting seat 10. Specifically, the surface of the first connecting plate 31 or the second connecting plate 32 is recessed to form a sliding groove, the first connecting member 41 or the second connecting member 42 is disposed in the sliding groove, and both sides in the width direction of the sliding groove abut against the first connecting plate 31 or the second connecting member 42 for guiding the first connecting plate 31 or the second connecting member 42 to move in the extending direction of the sliding groove.

Referring now to fig. 3, in the illustrated embodiment, point O is the center of gravity of mount 10, and hinge mechanism 30 is disposed to the right of and near point O to facilitate quick response to changes in the center of gravity; the floating mechanism 40 is disposed at the left side of the point O near the left end portion of the mount 10 so as to stably support the mount 10. The first connection plate 31 is disposed in the left-right direction with a certain length, and the floating mechanism 40 is disposed on the first connection plate 31. The upper surface part of the left side of the first connecting plate 31 is sunken to form a chute; at this time, the sliding groove is a groove, and the length direction of the sliding groove is arranged along the left-right direction so as to enable the first connecting piece 41 to move left and right; the width direction of the connecting piece is arranged along the front-back direction and just props against the two sides of the bottom of the first connecting piece 41 in the front-back direction; the two sides of the sliding groove in the width direction are matched to form a guide channel, so that the first connecting piece 41 can be accurately guided to move left and right.

Furthermore, two first limit blocks 46 are arranged in the sliding groove, the two first limit blocks 46 are arranged at intervals along the extending direction of the sliding groove, the first connecting piece 41 or the second connecting piece 42 is arranged between the two first limit blocks 46, and the two first limit blocks 46 are used for limiting the moving range of the first connecting piece 41 or the second connecting piece 42. Through setting up two first stopper 46, when can preventing first connecting piece 41 or second connecting piece 42 from removing, because excessive displacement, make first connecting piece 41 and second connecting piece 42 break away from each other to avoid the one end of mounting bracket 10 to keep away from hinge mechanism 30 to take off the power and fall, guarantee the operation safety of equipment.

Further, a second limiting block 3 is arranged on one side of the hinge mechanism 30 away from the floating mechanism 40; when the second connecting plate 32 rotates around the hinge position so that the second connecting member 42 is away from the first connecting member 41, the mounting bracket 10 rotates toward the second stopper 3, and the second stopper 3 can limit the rotation angle of the mounting bracket 10.

When the mounting bracket 10 is moved in the tilting direction, the second link plate 32 is rotated about its position hinged to the first link plate 31 due to the shift of the center of gravity. When the end of the mounting frame 10 far from the hinge mechanism 30 is lifted and the second connecting member 42 moves away from the first connecting member 41, if the moving speed of the mounting frame 10 is too high, the second connecting plate 32 may rotate around the hinge position continuously and excessively under the influence of inertia and gravity until the second connecting member 42 is completely separated from the first connecting member 41.

To avoid this, a second stopper 3 is provided. For example, referring to fig. 3, the second stopper 3 is disposed at the right side of the hinge mechanism 30, and the floating mechanism 40 is disposed at the left side of the hinge mechanism 30; the mounting rack 10 moves from right to left, when the movement path is gradually raised, the gravity center deviates to right, the second connecting plate 32 rotates clockwise around the hinged position, the second connecting piece 42 moves upwards and leftwards along the arc, and the right end part of the mounting rack 10 close to the second limiting block 3 moves downwards and leftwards along the arc; if the height of the upward movement of the mounting bracket 10 exceeds the preset distance, the second connecting member 42 tends to be completely separated from the first connecting member 41, the right end portion of the mounting bracket 10 close to the second limiting block 3 abuts against the upper surface of the second limiting block 3, and the second limiting block 3 cooperates with the hinge mechanism 30 to ensure that the mounting bracket 10 is in a stable state.

In order to reduce the vibration generated when the driving mechanism 20 drives the mounting frame 10 to move, the driving mechanism 20 includes: the base 21, the surface of the base 21 is sunken, form the mounting groove; the driving assembly 22 is arranged in the mounting groove and is connected with the mounting frame 10 through the hinge mechanism 30 and the floating mechanism 40; the guide assemblies 23 are arranged on two sides of the mounting groove; the hinge mechanism 30 and the floating mechanism 40 are slidably disposed on the guide assembly 23, and the driving assembly 22 drives the hinge mechanism 30 and the floating mechanism 40 to move the mounting frame 10 along the guide assembly 23.

The base 21 may be made of quartz, marble, or other shockproof materials. The driving component 22 is arranged in the mounting groove, and at least three side walls (a bottom wall and two opposite side walls in the width direction) of the mounting groove are connected with the driving component 22, so that the vibration generated by the operation of the driving component 22 can be well absorbed, the sensor can stably move, and the test error generated by the vibration is reduced.

The driving assembly 22 may be an electric cylinder, a linear module, or other driving members. In one embodiment, referring to fig. 3 and 4, the drive assembly 22 includes a motor, and a lead screw connected to an output shaft of the motor; the screw rod extends along the left and right direction; the hinge mechanism 30 and the floating mechanism 40 are in threaded connection with the screw rod through nuts; the motor works to drive the screw rod to rotate and drive the hinge mechanism 30 and the floating mechanism 40 to do linear motion along the screw rod; the motor rotates in a forward direction and in a reverse direction for a predetermined time, and is capable of driving the hinge mechanism 30 and the floating mechanism 40 to reciprocate.

The guide assembly 23 may be a guide rod, a guide rail, or a guide member. In a specific embodiment, referring to fig. 3 and 4, the middle of the upper surface of the base 21 is recessed to form a mounting groove; and two sides of the upper surface without the groove are respectively provided with a guide rail, and the hinge mechanism 30 and the floating mechanism 40 are in sliding connection with the guide rails through sliders. Because the guide rail is arranged on the base 21, the vibration generated by the movement of the hinge mechanism 30 and the floating mechanism 40 of the guide rail can be absorbed and slowed down by the base 21, so that the stable movement of the mounting seat 10 is further ensured, and the accuracy of thickness measurement is improved.

Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. Such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements but may alternatively include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The above description is only an example of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings, or which are directly or indirectly applied to other related technical fields, are intended to be included within the scope of the present application.

Claims (10)

1. A thickness measuring device comprises a first sensor (1) and a second sensor (2) which are arranged at intervals, and a mounting rack (10) for mounting the first sensor (1) and the second sensor (2), and is characterized by further comprising:

the driving mechanism (20) is used for driving the mounting frame (10) to move;

the hinge mechanism (30) comprises a first connecting plate (31) connected with the driving mechanism (20) and a second connecting plate (32) connected with the mounting frame (10), and the first connecting plate (31) is hinged with the second connecting plate (32);

the floating mechanism (40) comprises a first connecting piece (41) connected with the driving mechanism (20) and a second connecting piece (42) connected with the mounting rack (10), and the first connecting piece (41) is abutted to the second connecting piece (42);

the hinge mechanism (30) and the floating mechanism (40) are respectively arranged on two sides of the gravity center position of the mounting rack (10);

in the process that the mounting rack (10) moves in the horizontal direction and when the mounting rack moves in the vertical direction, the second connecting plate (32) rotates around a hinged position and drives the first sensor (1) and the second sensor (2) to synchronously rotate, and the distance between the first sensor (1) and the second sensor (2) is kept constant.

2. The thickness measuring device according to claim 1, wherein the mounting frame (10) comprises:

a first support (11), the first sensor (1) being arranged on the first support (11);

a second support (12), the second sensor (2) being arranged on the second support (12);

a third bracket (13) connecting the first bracket (11) and the second bracket (12);

wherein the first bracket (11) and the second bracket (12) are arranged at intervals; when the thickness is measured, the piece to be detected penetrates through the first support (11), the second support (12) and the space between the first sensor (1) and the second sensor (2).

3. The thickness measuring device according to claim 1 or 2, wherein the hinge mechanism (30) further comprises:

a first support (33) and a second support (34) which are arranged on the first connecting plate (31) at intervals;

a support shaft (35) connecting the first seat (33) and the second seat (34);

a support plate (36) connecting the support shaft (35) and the second connecting plate (32);

wherein one end of the supporting shaft (35) is rotatably arranged in the first support (33), the other end of the supporting shaft is rotatably arranged in the second support (34), and the supporting plate (36) is fixedly connected with the supporting shaft (35);

or, one end of the supporting shaft (35) is fixedly arranged in the first support seat (33), the other end of the supporting shaft is fixedly arranged in the second support seat (34), and the supporting plate (36) is rotatably arranged on the supporting shaft (35).

4. The thickness measuring device according to claim 1, wherein the surface of the first connecting member (41) for contacting the second connecting member (42) is a slope, and/or the surface of the second connecting member (42) for contacting the first connecting member (41) is a slope;

the ramp slopes downwardly toward the hinge mechanism (30).

5. The thickness measuring device according to claim 4, wherein when the surface of the first connecting member (41) for contacting the second connecting member (42) is an inclined surface, the surface of the second connecting member (42) for contacting the first connecting member (41) is a circular arc surface;

or when the surface of the second connecting piece (42) contacting the first connecting piece (41) is a slope, the surface of the first connecting piece (41) contacting the second connecting piece (42) is a circular arc surface.

6. The thickness measuring device according to claim 4 or 5, wherein the floating mechanism (40) further comprises a sliding guide (43), the sliding guide (43) extending toward the hinge mechanism (30);

the first connecting piece (41) and/or the second connecting piece (42) are/is arranged on the sliding guide piece (43) in a sliding mode;

the levelness of the mounting frame (10) can be adjusted by moving the first connector (41) or the second connector (42) along the sliding guide (43).

7. The thickness measuring device according to claim 6, wherein the surface of the first connecting plate (31) is recessed, forming a slide groove, in which the first connecting member (41) is disposed; and/or the surface of the second connecting plate (32) is concave and forms a sliding groove, and the second connecting piece (42) is arranged in the sliding groove;

the slide groove is used as the slide guide (43), and two sides of the slide groove in the width direction abut against the first connecting plate (31) or the second connecting piece (42) and are used for guiding the first connecting plate (31) or the second connecting piece (42) to move along the extending direction of the slide groove;

the sliding groove and the first connecting piece (41) and/or the sliding groove and the second connecting piece (42) are respectively provided with a waist-shaped hole (44) and a threaded hole (45); the waist-shaped hole (44) extends towards the hinge mechanism (30), the threaded hole (45) is exposed in the waist-shaped hole (44), and a screw passes through the waist-shaped hole (44) and is in threaded connection with the threaded hole (45).

8. The thickness measuring device according to claim 6, wherein a first stopper (46) is respectively disposed at two sides of the extending direction of the sliding guide (43), the first connecting member (41) or the second connecting member (42) is disposed between the two first stoppers (46), and the two first stoppers (46) are used for limiting the movable range of the first connecting member (41) or the second connecting member (42).

9. The thickness measuring device according to claim 1, wherein a second limiting block (3) is arranged on one side of the hinge mechanism (30) far away from the floating mechanism (40);

when the second connecting plate (32) rotates around the hinge position to enable the second connecting piece (42) to be far away from the first connecting piece (41), the mounting frame (10) rotates towards the second limiting block (3), and the second limiting block (3) can limit the rotating angle of the mounting frame (10).

10. The thickness measuring device according to claim 1, wherein the driving mechanism (20) comprises:

the surface of the base (21) is sunken to form a mounting groove;

the driving assembly (22) is arranged in the mounting groove and is connected with the mounting frame (10) through the hinge mechanism (30) and the floating mechanism (40);

the guide assemblies (23) are arranged on two sides of the mounting groove;

the hinge mechanism (30) and the floating mechanism (40) are arranged on the guide assembly (23) in a sliding mode, and the driving assembly (22) drives the hinge mechanism (30) and the floating mechanism (40) to drive the mounting frame (10) to move along the guide assembly (23).

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